* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ===== LIGHT/DARK MODE VARIABLES ===== */
:root {
    --bg-primary: #f0f2f5;
    --bg-secondary: #ffffff;
    --bg-card: #f8f9fa;
    --text-primary: #1a1a2e;
    --text-secondary: #6c757d;
    --border-color: #e9ecef;
    --header-bg: linear-gradient(135deg, #0d6efd, #0a58ca);
    --header-text: white;
    --tab-bg: #e9ecef;
    --tab-text: #495057;
    --tab-active-bg: #0d6efd;
    --tab-active-text: white;
    --card-shadow: 0 2px 10px rgba(0,0,0,0.05);
    --card-hover-shadow: 0 4px 12px rgba(0,0,0,0.1);
    --sidebar-bg: white;
    --course-header-bg: #f8f9fa;
    --course-header-hover: #e9ecef;
    --topic-btn-bg: #f8f9fa;
    --topic-btn-hover: #e9ecef;
    --topic-btn-active: #0d6efd;
    --warning-bg: #fff3cd;
    --warning-border: #ffc107;
    --warning-text: #856404;
    --essay-note-bg: #e9ecef;
    --essay-note-text: #6c757d;
     --dash-border: #e2e5eb;
    --dash-success: #16a34a;
    --dash-warning: #f59e0b;
    --dash-danger: #ef4444;
}

[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --border-color: #334155;
    --header-bg: linear-gradient(135deg, #1e3a5f, #0f2b40);
    --header-text: #e2e8f0;
    --tab-bg: #1e293b;
    --tab-text: #94a3b8;
    --tab-active-bg: #3b82f6;
    --tab-active-text: white;
    --card-shadow: 0 2px 10px rgba(0,0,0,0.2);
    --card-hover-shadow: 0 4px 12px rgba(0,0,0,0.3);
    --sidebar-bg: #0f172a;
    --course-header-bg: #1e293b;
    --course-header-hover: #334155;
    --topic-btn-bg: #1e293b;
    --topic-btn-hover: #334155;
    --topic-btn-active: #3b82f6;
    --warning-bg: #422b00;
    --warning-border: #f59e0b;
    --warning-text: #fcd34d;
    --essay-note-bg: #1e293b;
    --essay-note-text: #94a3b8;
    --dash-border: #2a3550;
    --dash-success: #22c55e;
    --dash-warning: #f7b955;
    --dash-danger: #f16565;
}

html, body {
    height: 100%;
    overflow-x: hidden;
}

body {
    display: flex;
    flex-direction: column;
    max-width: 100vw;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: background 0.3s ease, color 0.3s ease;
}
/* ===== Survey modal =====
   Place anywhere in style.css. Uses your existing tokens:
   --bg-secondary, --bg-primary, --dash-border, --text-primary,
   --text-secondary, --tab-active-bg, --dash-danger */

.survey-overlay {
    position: fixed;
    inset: 0;
    background: rgba(8, 10, 20, 0.65);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.survey-modal {
    background: var(--bg-secondary);
    border: 1px solid var(--dash-border);
    border-radius: 20px;
    width: 100%;
    max-width: 480px;
    max-height: 92vh;
    overflow-y: auto;
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.35);
}

.survey-header { text-align: center; padding: 28px 24px 12px; }
.survey-emoji { font-size: 2rem; margin-bottom: 8px; }
.survey-header h2 { font-size: 1.3rem; color: var(--text-primary); margin-bottom: 6px; }
.survey-header p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.5; }

.survey-body { padding: 8px 24px 0; }
.survey-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 14px 0 6px;
}
.survey-required { color: var(--dash-danger); font-weight: 400; }
.survey-optional { color: var(--text-secondary); font-weight: 400; font-size: 0.8rem; }

.survey-select, .survey-input {
    width: 100%;
    padding: 12px 14px;
    border: 2px solid var(--dash-border);
    border-radius: 10px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    box-sizing: border-box;
    transition: border-color 0.15s ease;
}
.survey-select:focus, .survey-input:focus {
    outline: none;
    border-color: var(--tab-active-bg);
}

.survey-hint { font-size: 0.78rem; color: var(--text-secondary); margin: 6px 0 0; font-style: italic; }

.survey-footer { padding: 20px 24px 24px; text-align: center; }
.survey-submit {
    width: 100%;
    padding: 14px;
    background: var(--tab-active-bg);
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: filter 0.15s ease;
}
.survey-submit:hover:not(:disabled) { filter: brightness(1.08); }
.survey-submit:disabled { opacity: 0.6; cursor: not-allowed; }
.survey-error { color: var(--dash-danger); font-size: 0.85rem; margin-top: 10px; }
/* Header Theme Toggle */
.header-theme-toggle {
    position: absolute;
    right: 0;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: all 0.2s ease;
}

.header-theme-toggle:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

[data-theme="dark"] .header-theme-toggle {
    background: rgba(255, 255, 255, 0.1);
    color: #e2e8f0;
}

[data-theme="dark"] .header-theme-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Mobile adjustment for header theme toggle */
@media (max-width: 768px) {
        /* Hide header theme toggle on mobile - use sidebar one instead */
    .header-theme-toggle {
        display: none;
    }
    .sign-out-btn {
        display: none;
    }
}
/* Header */
header {
    text-align: center;
    padding: 30px 20px;
    background: var(--header-bg);
    color: var(--header-text);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
}

.hamburger-btn {
    position: absolute;
    left: 0;
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 100;
}

.hamburger-btn span {
    width: 100%;
    height: 3px;
    background: var(--header-text);
    border-radius: 3px;
}

.header-text h1 {
    font-size: 2rem;
    margin-bottom: 8px;
}

.header-text p {
    opacity: 0.9;
}
@media (max-width: 768px) {
    .header-text p {
        display: none;
    }
    
    .header-text h1 {
        font-size: 1.1rem;
        margin-bottom: 0;
    }
    
    .header-container {
        justify-content: space-between;
    }
    
    .hamburger-btn {
        position: relative;
        left: auto;
    }
}
.learn-banner {
  background: var(--bg-card);
  border: 1px solid var(--dash-border);
  border-radius: 14px;
  padding: 16px 18px;
  margin-bottom: 18px;
}
.learn-banner-heading {
  margin: 0 0 10px;
  font-size: 0.9rem;
  color: var(--tab-active-bg);
}
.learn-resource-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.learn-resource-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: var(--bg-primary);
  border: 1px solid var(--dash-border);
  border-radius: 999px;
  color: var(--text-primary);
  text-decoration: none;
  font-size: 0.82rem;
  transition: border-color 0.15s ease;
}
.learn-resource-pill:hover { border-color: var(--tab-active-bg); }

.topic-nav-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}
.topic-nav-btn {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--dash-border);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 0.85rem;
  color: var(--text-primary);
  cursor: pointer;
  text-align: center;
}
.topic-nav-btn:hover:not(:disabled) { border-color: var(--tab-active-bg); }
.topic-nav-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.topic-nav-back { flex: 0 0 auto; color: var(--tab-active-bg); }

/* ===== LEARN BANNER + TOPIC NAV — MOBILE ===== */
@media (max-width: 768px) {

  /* Learn banner */
  .learn-banner {
    padding: 14px 14px;
    border-radius: 12px;
    margin-bottom: 16px;
  }
  .learn-banner-heading {
    font-size: 0.82rem;
    margin-bottom: 8px;
  }
  .learn-resource-list {
    flex-direction: column;
    gap: 6px;
  }
  .learn-resource-pill {
    width: 100%;
    box-sizing: border-box;
    justify-content: flex-start;
    padding: 10px 14px;
    font-size: 0.8rem;
    border-radius: 10px;      /* pills become full-width rows on mobile */
  }

  /* Topic nav bar */
  .topic-nav-bar {
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 14px;
  }
  .topic-nav-btn {
    padding: 10px 10px;
    font-size: 0.8rem;
  }
  .topic-nav-back {
    flex: 1 1 100%;            /* "Back" takes full row on mobile */
    order: -1;                 /* but sits ABOVE prev/next buttons */
    text-align: left;
    padding: 6px 0;
  }
}

@media (max-width: 400px) {
  .learn-banner { padding: 12px; }
  .learn-resource-pill {
    font-size: 0.75rem;
    padding: 9px 12px;
  }
  .topic-nav-btn {
    font-size: 0.75rem;
    padding: 9px 8px;
  }
}
/* Subject Tabs */
.subject-tabs {
    display: flex;
    justify-content: center;
    gap: 15px;
    background: var(--bg-secondary);
    padding: 15px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    flex-wrap: wrap;
}

.tab-btn {
    padding: 12px 30px;
    font-size: 1rem;
    font-weight: bold;
    border: none;
    border-radius: 30px;
    cursor: pointer;
    background: var(--tab-bg);
    color: var(--tab-text);
    transition: all 0.3s ease;
}

.tab-btn:hover {
    background: var(--course-header-hover);
    transform: translateY(-2px);
}

.tab-btn.active {
    background: var(--tab-active-bg);
    color: var(--tab-active-text);
    box-shadow: 0 4px 12px rgba(13,110,253,0.3);
}
/* ===== SUBJECTS DROPDOWN ===== */
.subjects-dropdown {
    position: relative;
}

#subjects-dropdown-btn {
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: bold;
    border: none;
    border-radius: 30px;
    cursor: pointer;
    background: var(--tab-bg);
    color: var(--tab-text);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 6px;
}

#subjects-dropdown-btn:hover {
    background: var(--course-header-hover);
    transform: translateY(-2px);
}

#subjects-dropdown-btn.active {
    background: var(--tab-active-bg);
    color: var(--tab-active-text);
    box-shadow: 0 4px 12px rgba(13, 110, 253, 0.3);
}

.dropdown-arrow {
    font-size: 0.7rem;
    transition: transform 0.3s;
}

#subjects-dropdown-btn.open .dropdown-arrow {
    transform: rotate(180deg);
}

.subjects-dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-secondary);
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    z-index: 500;
    min-width: 220px;
    padding: 8px;
    margin-top: 8px;
    border: 1px solid var(--border-color);
}

.subjects-dropdown-menu.show {
    display: block;
}

.subject-dropdown-item {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    padding: 12px 16px;
    background: transparent;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 500;
    text-align: left;
    transition: all 0.2s;
}

.subject-dropdown-item:hover {
    background: var(--topic-btn-hover);
}

.subject-dropdown-item.active {
    background: var(--tab-active-bg);
    color: white;
}

/* Mobile */
@media (max-width: 768px) {
    #subjects-dropdown-btn {
        padding: 8px 16px;
        font-size: 0.85rem;
    }
    
    .subjects-dropdown-menu {
        min-width: 200px;
    }
    
    .subject-dropdown-item {
        padding: 10px 14px;
        font-size: 0.85rem;
    }
}
/* Main Container */
.main-container {
    display: flex;
    max-width: 1400px;
    margin: 30px auto;
    gap: 25px;
    padding: 0 20px;
    min-height: 60vh;
}

/* Sidebar */
#categories-sidebar {
    width: 280px;
    background: var(--sidebar-bg);
    border-radius: 12px;
    padding: 20px;
    height: fit-content;
    position: sticky;
    top: 20px;
    transition: width 0.3s ease, padding 0.3s ease, background 0.3s ease;
    flex-shrink: 0;
    box-shadow: var(--card-shadow);
}

/* Collapsed sidebar */
#categories-sidebar.sidebar-collapsed {
    width: 68px;
    padding: 20px 12px;
}

#categories-sidebar.sidebar-collapsed .sidebar-header h3 {
    display: none;
}

#categories-sidebar.sidebar-collapsed .sidebar-header {
    justify-content: center;
}

#categories-sidebar.sidebar-collapsed .course-header h4 {
    display: none;
}

#categories-sidebar.sidebar-collapsed .course-header .dropdown-icon {
    display: none;
}

#categories-sidebar.sidebar-collapsed .course-topics {
    display: none !important;
}

#categories-sidebar.sidebar-collapsed .course-header {
    padding: 12px 0;
    justify-content: center;
}

#categories-sidebar.sidebar-collapsed .topic-btn {
    justify-content: center;
    padding: 10px 0;
}

#categories-sidebar.sidebar-collapsed .topic-text {
    display: none;
}
/* ===== Sidebar collapse ===== */

body.sidebar-collapsed .app-sidebar {
  width: 72px;
}

/* Collapse toggle button — small circular tab riding the sidebar's edge */
.sidebar-collapse-btn {
  position: absolute;
  top: 22px;
  right: -13px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 1px solid var(--dash-border);
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  transition: transform 0.22s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.15s ease, color 0.15s ease;
  z-index: 1101;
}
.sidebar-collapse-btn:hover {
  border-color: var(--tab-active-bg);
  color: var(--tab-active-bg);
}
body.sidebar-collapsed .sidebar-collapse-btn span {
  display: inline-block;
  transform: rotate(180deg);
}

/* Only show the collapse toggle on desktop — mobile already has the hamburger */
@media (max-width: 900px) {
  .sidebar-collapse-btn { display: none; }
}

/* Fade + collapse the text labels, keep icons centered */
.sidebar-label {
  white-space: nowrap;
  opacity: 1;
  transition: opacity 0.15s ease;
}
body.sidebar-collapsed .sidebar-label {
  opacity: 0;
  width: 0;
  height: 0;
  overflow: hidden;
  pointer-events: none;
}

body.sidebar-collapsed .sidebar-link {
  justify-content: center;
  gap: 0;
  position: relative; /* anchor for the tooltip */
}
body.sidebar-collapsed .sidebar-nav,
body.sidebar-collapsed .sidebar-nav--secondary {
  align-items: center;
}
body.sidebar-collapsed .sidebar-brand {
  text-align: center;
}
body.sidebar-collapsed .sidebar-footer {
  justify-content: center;
}

/* Pure-CSS tooltip, only active in collapsed mode */
body.sidebar-collapsed .sidebar-link[data-tooltip]:hover::after {
  content: attr(data-tooltip);
  position: absolute;
  left: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--dash-border);
  padding: 6px 10px;
  border-radius: 8px;
  font-size: 0.8rem;
  white-space: nowrap;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
  z-index: 50;
  pointer-events: none;
}

/* When collapsed, reserve less space for content/footer (desktop only) */
@media (min-width: 901px) {
  body.has-sidebar.sidebar-collapsed #dashboard-screen,
  body.has-sidebar.sidebar-collapsed #app-content,
  body.has-sidebar.sidebar-collapsed #progress-screen,
  body.has-sidebar.sidebar-collapsed #settings-screen,
  body.has-sidebar.sidebar-collapsed #help-screen,
  body.has-sidebar.sidebar-collapsed .app-footer {
    margin-left: 72px;
    transition: margin-left 0.22s cubic-bezier(0.4, 0, 0.2, 1);
  }
  /* Also animate the expanded state smoothly */
  body.has-sidebar:not(.sidebar-collapsed) #dashboard-screen,
  body.has-sidebar:not(.sidebar-collapsed) #app-content,
  body.has-sidebar:not(.sidebar-collapsed) #progress-screen,
  body.has-sidebar:not(.sidebar-collapsed) #settings-screen,
  body.has-sidebar:not(.sidebar-collapsed) #help-screen,
  body.has-sidebar:not(.sidebar-collapsed) .app-footer {
    transition: margin-left 0.22s cubic-bezier(0.4, 0, 0.2, 1);
  }
}
/* Sidebar header */
.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--tab-active-bg);
}

.sidebar-header h3 {
    font-size: 1rem;
    margin: 0;
    color: var(--tab-active-bg);
    font-weight: normal;
}

/* ===== QUESTION TABLE ===== */
.question-table-wrap {
    margin: 16px 0;
    overflow-x: auto;
}

.question-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.question-table th,
.question-table td {
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    text-align: center;
}

.question-table th {
    background: var(--course-header-bg);
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.85rem;
}

.question-table td {
    color: var(--text-primary);
    background: var(--bg-card);
}

.question-table tr:hover td {
    background: var(--course-header-hover);
}

/* ===== QUESTION EQUATION (LaTeX) ===== */
.question-equation {
    margin: 16px 0;
    padding: 16px;
    background: var(--bg-card);
    border-radius: 8px;
    overflow-x: auto;
    text-align: center;
    font-size: 1.1rem;
}

/* ===== QUESTION DIAGRAM ===== */
.question-diagram {
    margin: 16px 0;
    padding: 16px;
    background: var(--bg-card);
    border-radius: 8px;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: auto;
}

.question-diagram svg {
    max-width: 100%;
    height: auto;
}

/* Dark mode adjustments */
[data-theme="dark"] .question-table th {
    background: #1e293b;
}

[data-theme="dark"] .question-diagram {
    background: #1e293b;
}

/* ===== MODEL ANSWER FORMATTING ===== */
.model-answer {
    font-size: 0.9rem;
    line-height: 1.7;
    word-wrap: break-word;
    white-space: normal;
}

.model-answer br {
    display: block;
    content: "";
    margin: 4px 0;
}

/* ===== ESSAY ANSWER DISPLAY ===== */
.essay-answer-display {
    padding: 18px 20px;
    background: #e8f4f8;
    border-left: 4px solid #17a2b8;
    border-radius: 8px;
}

/* ===== DARK MODE ===== */
[data-theme="dark"] .essay-answer-display {
    background: #1e3a5f;
    border-left-color: #60a5fa;
}

[data-theme="dark"] .model-answer {
    color: #93c5fd;
}

/* ===== OBJECTIVE ANSWER DISPLAY ===== */
.answer-display {
    padding: 14px 16px;
    background: #d4edda;
    border-left: 4px solid #28a745;
    border-radius: 8px;
}

.answer-display .explanation {
    font-size: 0.9rem;
    line-height: 1.7;
    word-wrap: break-word;
    white-space: normal;
    color: #155724;
}

/* ===== QUIZ REVIEW EXPLANATION ===== */
.rq-explanation {
    font-size: 0.9rem;
    line-height: 1.7;
    word-wrap: break-word;
    white-space: normal;
    padding: 12px 14px;
    background: #e8f4f8;
    border-radius: 8px;
}

/* ===== DARK MODE ===== */
[data-theme="dark"] .answer-display {
    background: #1a3a2a;
    border-left-color: #2ecc71;
}

[data-theme="dark"] .answer-display .explanation {
    color: #a3e4b7;
}

[data-theme="dark"] .rq-explanation {
    background: #1e3a5f;
    color: #93c5fd;
}
.sidebar-collapse-btn:hover {
    background: var(--topic-btn-hover);
    color: var(--tab-active-bg);
}

#categories-sidebar.sidebar-collapsed .sidebar-collapse-btn svg {
    transform: rotate(180deg);
}

/* Mobile close button */
.sidebar-close-btn {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 6px;
    border-radius: 6px;
    color: var(--text-secondary);
}

.sidebar-close-btn:hover {
    background: var(--topic-btn-hover);
    color: #dc3545;
}

/* Sidebar overlay */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 90;
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.sidebar-overlay.active {
    display: block;
    opacity: 1;
}
/* ===== SIDEBAR FOOTER (Mobile Only) ===== */
/* ===== SIDEBAR FOOTER (Mobile Only) ===== */
.sidebar-footer {
    display: none;
    background: var(--sidebar-bg);
    padding: 16px 0 0 0;
    margin-top: 20px;
    border-top: 1px solid var(--border-color);
}

/* Show only on mobile */
@media (max-width: 768px) {
    .sidebar-footer {
        display: block;
    }
    
    #categories-sidebar.sidebar-collapsed .sidebar-footer {
        display: none;
    }
}

.sidebar-theme-toggle {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 12px 14px;
    background: var(--topic-btn-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    cursor: pointer;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.sidebar-theme-toggle:hover {
    background: var(--topic-btn-hover);
    border-color: var(--tab-active-bg);
}

.sidebar-theme-toggle svg {
    flex-shrink: 0;
}

.sidebar-footer-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-top: 12px;
    padding: 8px 0;
}

.sidebar-footer-link {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 8px 14px;
    background: var(--topic-btn-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.sidebar-footer-link:hover {
    background: var(--topic-btn-hover);
    border-color: var(--tab-active-bg);
    color: var(--tab-active-bg);
}

.sidebar-version {
    font-size: 0.75rem;
    color: var(--text-secondary);
    opacity: 0.6;
}

.sidebar-footer-dot {
    color: var(--border-color);
}
/* Hide desktop-only elements on mobile */
@media (max-width: 768px) {
    .desktop-only {
        display: none !important;
    }
    .sign-out-btn {
   display: none !important; 
}
}
.sign-out-btn {
    margin-top: 200px !important; 
}

/* ===== DASHBOARD ===== */
.dash-shell {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 24px;
  max-width: 1200px;
  margin: 0 auto;
  color: var(--text-primary);
}
 
/* Header */
.dashboard-header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 16px;
}
.dash-back-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: 1px solid var(--dash-border);
  color: var(--text-secondary);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.dash-back-btn:hover { border-color: var(--tab-active-bg); color: var(--tab-active-bg); }
.dash-greeting h2 { margin: 0; font-size: 1.4rem; }
.dash-greeting p { margin: 2px 0 0; color: var(--text-secondary); font-size: 0.9rem; }
.dash-date { color: var(--text-secondary); font-size: 0.85rem; }
 
/* Rows */
.dashboard-row { display: grid; gap: 16px; }
.dashboard-row--top { grid-template-columns: 2fr 1fr; }
.dashboard-row--bottom { grid-template-columns: 1fr 1fr; }
@media (max-width: 720px) {
  .dashboard-row--top, .dashboard-row--bottom { grid-template-columns: 1fr; }
  .dashboard-header { grid-template-columns: 1fr; text-align: left; }
}
.dash-header-actions {
  justify-self: end;
}
/* Settings — reuses dash-card, dash-btn-primary, dash-subtext, dash-border,
   tab-active-bg from dashboard.css. Only new/settings-specific rules below. */

.settings-account-row {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}
.settings-avatar {
  width: 56px; height: 56px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--tab-active-bg);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; font-weight: 700;
  flex-shrink: 0;
}
.settings-avatar img { width: 100%; height: 100%; object-fit: cover; }
.settings-account-email { margin: 0; color: var(--text-secondary); font-size: 0.9rem; }

.settings-label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin: 16px 0 6px;
}
.settings-name-row { display: flex; gap: 10px; }
.settings-input, .settings-select {
  flex: 1;
  background: var(--bg-primary);
  border: 1px solid var(--dash-border);
  border-radius: 9px;
  padding: 10px 12px;
  font-size: 0.9rem;
  color: var(--text-primary);
}
.settings-select { width: 100%; }
.settings-input:focus, .settings-select:focus { outline: none; border-color: var(--tab-active-bg); }

.settings-danger-btn {
  margin-top: 20px;
  background: none;
  border: 1px solid var(--dash-danger);
  color: var(--dash-danger);
  border-radius: 9px;
  padding: 9px 16px;
  font-size: 0.85rem;
  cursor: pointer;
}
.settings-danger-btn:hover { background: var(--dash-danger); color: #fff; }

.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.settings-row-title { margin: 0; font-size: 0.95rem; color: var(--text-primary); }

/* Toggle switch */
.settings-switch {
  position: relative;
  display: inline-block;
  width: 46px; height: 26px;
  flex-shrink: 0;
}
.settings-switch input { opacity: 0; width: 0; height: 0; }
.settings-switch-track {
  position: absolute; inset: 0;
  background: var(--dash-border);
  border-radius: 999px;
  transition: background 0.15s ease;
  cursor: pointer;
}
.settings-switch-track::before {
  content: "";
  position: absolute;
  width: 20px; height: 20px;
  left: 3px; top: 3px;
  background: #fff;
  border-radius: 50%;
  transition: transform 0.15s ease;
}
.settings-switch input:checked + .settings-switch-track { background: var(--tab-active-bg); }
.settings-switch input:checked + .settings-switch-track::before { transform: translateX(20px); }

/* Help & Support — reuses dash-card, dash-btn-primary, dash-subtext,
   dash-border from dashboard.css. Only new rules below. */

.help-faq-item {
  border-bottom: 1px solid var(--dash-border);
}
.help-faq-item:last-child { border-bottom: none; }

.help-faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 14px 4px;
  font-size: 0.9rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}
.help-faq-caret {
  transition: transform 0.15s ease;
  color: var(--text-secondary);
  flex-shrink: 0;
  margin-left: 12px;
}
.help-faq-item.is-open .help-faq-caret { transform: rotate(180deg); }

.help-faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.2s ease;
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding: 0 4px;
}
.help-faq-item.is-open .help-faq-answer {
  padding: 0 4px 16px;
}

.help-contact-btn {
  width: 100%;
  margin-top: 8px;
}
/* ===== FAQ ACCORDION ===== */
.faq-item {
    border-bottom: 1px solid var(--dash-border);
    padding: 12px 0;
}
.faq-item:last-child {
    border-bottom: none;
}
.faq-item summary {
    cursor: pointer;
    font-weight: 600;
    color: var(--text-primary);
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 4px 0;
}
.faq-item summary::-webkit-details-marker {
    display: none;
}
.faq-item summary::after {
    content: '+';
    font-size: 1.2rem;
    color: var(--text-secondary);
    transition: transform 0.2s;
}
.faq-item[open] summary::after {
    content: '−';
}
.faq-item p {
    margin-top: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}
/* Cards */
.dash-card {
  background: var(--bg-secondary);
  border: 1px solid var(--dash-border);
  border-radius: 14px;
  padding: 20px;
}
.dash-card h3 { margin: 0 0 8px; font-size: 1rem; }
.dash-card-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.dash-link-btn {
  background: none;
  border: none;
  color: var(--tab-active-bg);
  font-size: 0.85rem;
  cursor: pointer;
  padding: 0;
}
.dash-subtext { color: var(--text-secondary); font-size: 0.85rem; margin: 4px 0; }
.dash-subtext--muted { opacity: 0.8; }
 
/* Continue session card */
.dash-eyebrow { color: var(--tab-active-bg); font-size: 0.8rem; margin: 0 0 4px; }
.dash-continue-card h3 { font-size: 1.3rem; }
.dash-progress-track {
  height: 8px;
  border-radius: 999px;
  background: var(--dash-border);
  overflow: hidden;
  margin: 14px 0;
}
.dash-progress-fill { height: 100%; background: var(--tab-active-bg); border-radius: 999px; }
.dash-btn-primary {
  background: var(--tab-active-bg);
  color: #fff;
  border: none;
  border-radius: 9px;
  padding: 10px 18px;
  font-size: 0.9rem;
  cursor: pointer;
}
.dash-btn-primary:hover { filter: brightness(1.08); }
 
/* Streak */
.dash-streak-number { font-size: 2rem; font-weight: 700; margin: 4px 0; }
.dash-streak-number span { font-size: 0.9rem; font-weight: 400; color: var(--text-secondary); margin-left: 6px; }
.streak-dots { display: flex; gap: 8px; margin-top: 14px; }
.streak-dot {
  width: 30px; height: 30px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.75rem;
  background: var(--dash-border);
  color: var(--text-secondary);
}
.streak-dot.is-complete { background: var(--tab-active-bg); color: #fff; }
.streak-dot.is-today { outline: 2px solid var(--dash-warning); outline-offset: 2px; }
 
/* Subjects */
.dash-subject-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
}
.dash-subject-tile {
  border: 1px solid var(--dash-border);
  border-radius: 12px;
  padding: 14px;
}
.dash-subject-tile h4 { margin: 8px 0 2px; font-size: 0.95rem; }
.dash-subject-pct { font-size: 1.4rem; font-weight: 700; margin: 2px 0; }
.dash-subject-tile .dash-progress-track { margin: 8px 0 4px; height: 6px; }

.subject-tile { position: relative; }

.pin-badge {
  position: absolute;
  top: 2px; right: 2px;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--tab-active-bg);
  color: #fff;
  font-size: 0.95rem;
  line-height: 1;
  display: flex; align-items: center; justify-content: center;
  z-index: 1;
}
.pin-badge.is-pinned { background: var(--dash-danger); }
 
.pinned-empty { grid-column: 1 / -1; text-align: center; padding: 8px 0; }
.dash-subject-tile { text-align: center; }
.dash-subject-tile.is-clickable { cursor: pointer; }
.dash-subject-tile.is-clickable:hover { border-color: var(--tab-active-bg); }

.dash-add-subject-tile {
  border: 1px dashed var(--dash-border);
  border-radius: 12px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  color: var(--text-secondary);
  background: none;
  cursor: pointer;
  min-height: 96px;
}
.dash-add-subject-tile:hover { border-color: var(--tab-active-bg); color: var(--tab-active-bg); }
.dash-add-subject-tile .plus-icon { font-size: 1.4rem; }
/* Weak topics */
.dash-weak-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  font-size: 0.85rem;
}
.dash-weak-row .dash-progress-track { flex: 1; margin: 0; }
.dash-weak-row .dash-weak-pct { width: 38px; text-align: right; color: var(--dash-danger); }
 
/* Recent activity */
.dash-activity-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid var(--dash-border);
  font-size: 0.85rem;
}
.dash-activity-row:last-child { border-bottom: none; }
 
/* Bottom nav */
.dashboard-nav { display: flex; gap: 12px; }
.dash-nav-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  background: var(--bg-secondary);
  border: 1px solid var(--dash-border);
  border-radius: 12px;
  padding: 14px;
  color: var(--text-primary);
  cursor: pointer;
  font-size: 0.85rem;
}
.dash-nav-btn:hover { border-color: var(--tab-active-bg); }
.dash-nav-icon { font-size: 1.2rem; }

/* ===== PERSISTENT SIDEBAR ===== */
.app-sidebar {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    width: 220px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--dash-border);
    display: flex;
    flex-direction: column;
    padding: 20px 14px;
    z-index: 1000;
    transition: width 0.22s cubic-bezier(0.4, 0, 0.2, 1), transform 0.2s ease;
}

.sidebar-brand { padding: 0 8px 20px; }
.sidebar-logo { font-weight: 700; font-size: 1.1rem; color: var(--tab-active-bg); }
.sidebar-tagline { margin: 2px 0 0; font-size: 0.75rem; color: var(--text-secondary); }

.sidebar-nav { display: flex; flex-direction: column; gap: 2px; }
.sidebar-nav--secondary {
    margin-top: auto;
    padding-top: 14px;
    border-top: 1px solid var(--dash-border);
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    border-radius: 8px;
    padding: 10px 12px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s ease;
}
.sidebar-link:hover { background: var(--bg-primary); color: var(--text-primary); }
.sidebar-link.is-active {
    background: var(--tab-active-bg);
    color: #fff;
}
.sidebar-icon { font-size: 1rem; }

.sidebar-footer {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 8px 0;
    margin-top: 14px;
    border-top: 1px solid var(--dash-border);
}
.sidebar-avatar {
    width: 36px; height: 36px;
    border-radius: 50%;
    background: var(--tab-active-bg);
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.8rem; font-weight: 700;
    flex-shrink: 0;
}
.sidebar-user-name { margin: 0; font-size: 0.85rem; color: var(--text-primary); font-weight: 600; }
.sidebar-user-plan { margin: 2px 0 0; font-size: 0.75rem; color: var(--dash-warning); }

/* Push content over on desktop */
@media (min-width: 901px) {
    body.has-sidebar #dashboard-screen,
    body.has-sidebar #app-content,
    body.has-sidebar #progress-screen,
    body.has-sidebar #settings-screen,
    body.has-sidebar #help-screen,
    body.has-sidebar .app-footer {
        margin-left: 220px;
    }
}

/* Mobile: slide-in drawer */
.sidebar-toggle {
    display: none;
    position: fixed;
    top: 14px; left: 14px;
    z-index: 1001;
    width: 40px; height: 40px;
    border-radius: 10px;
    border: 1px solid var(--dash-border);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 1.1rem;
    cursor: pointer;
}
.sidebar-overlay {
    display: none;
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.4);
    z-index: 999;
}

@media (max-width: 900px) {
    .app-sidebar { transform: translateX(-100%); }
    .app-sidebar.is-open { transform: translateX(0); }
    .sidebar-toggle { display: block; }
    .sidebar-overlay.is-open { display: block; }

    #dashboard-screen,
    #app-content,
    #progress-screen,
    #settings-screen,
    #help-screen,
    .app-footer { margin-left: 0; }

    #dashboard-screen,
    #app-content,
    #progress-screen,
    #settings-screen,
    #help-screen {
        padding-top: 56px;
    }
    
    /* Dashboard header adjustment */
    .dashboard-header {
        grid-template-columns: 1fr;
    }
}


.subject-tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  border-radius: 16px;
  transition: transform 0.15s ease;
}
.subject-tile:hover { transform: translateY(-3px); }
.subject-tile:active { transform: scale(0.96); }
.subject-tile.is-hidden { display: none; }

.subject-tile-icon {
  width: 64px; height: 64px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.7rem;
  background: linear-gradient(145deg, var(--tab-active-bg), color-mix(in srgb, var(--tab-active-bg) 60%, #7c3aed));
  box-shadow: 0 8px 20px color-mix(in srgb, var(--tab-active-bg) 35%, transparent);
}

.subject-tile-name {
  font-size: 0.82rem;
  color: var(--text-primary);
  text-align: center;
  line-height: 1.2;
}

@media (max-width: 480px) {
  .subject-picker-panel { padding: 22px 18px 28px; border-radius: 20px; }
  .subject-tile-icon { width: 56px; height: 56px; font-size: 1.4rem; }
}
/* Subject picker — reuses --bg-secondary, --text-primary, --text-secondary,
   --tab-active-bg, --dash-border from your existing token system. */

.subject-picker {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.22s ease, visibility 0.22s ease;
}
.subject-picker.is-open {
  visibility: visible;
  opacity: 1;
}

.subject-picker-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(8, 10, 20, 0.55);
  backdrop-filter: blur(22px) saturate(140%);
  -webkit-backdrop-filter: blur(22px) saturate(140%);
}

.subject-picker-panel {
  position: relative;
  width: min(720px, 92vw);
  max-height: 82vh;
  overflow-y: auto;
  background: color-mix(in srgb, var(--bg-secondary) 88%, transparent);
  border: 1px solid color-mix(in srgb, var(--dash-border) 80%, transparent);
  border-radius: 24px;
  padding: 28px 32px 36px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
  transform: scale(0.94) translateY(10px);
  transition: transform 0.22s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.subject-picker.is-open .subject-picker-panel {
  transform: scale(1) translateY(0);
}

.subject-picker-close {
  position: absolute;
  top: 16px; right: 16px;
  width: 32px; height: 32px;
  border-radius: 50%;
  border: none;
  background: var(--bg-primary);
  color: var(--text-secondary);
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
}
.subject-picker-close:hover { color: var(--text-primary); }

.subject-picker-topbar {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 24px;
  margin-bottom: 10px;
}

.subject-picker-back {
  display: none;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  color: var(--tab-active-bg);
  font-size: 0.85rem;
  cursor: pointer;
  padding: 4px 0;
  flex-shrink: 0;
}
.subject-picker-back.is-visible { display: inline-flex; }

.subject-picker-crumbs {
  font-size: 0.8rem;
  color: var(--text-secondary);
}
.subject-picker-crumbs .crumb {
  cursor: pointer;
}
.subject-picker-crumbs .crumb:hover { color: var(--tab-active-bg); }
.subject-picker-crumbs .crumb.is-current {
  color: var(--text-primary);
  cursor: default;
  font-weight: 600;
}
.subject-picker-crumbs .crumb-sep { margin: 0 6px; opacity: 0.5; }

.subject-picker-search {
  width: 100%;
  box-sizing: border-box;
  background: var(--bg-primary);
  border: 1px solid var(--dash-border);
  border-radius: 12px;
  padding: 12px 16px;
  font-size: 0.95rem;
  color: var(--text-primary);
  margin: 8px 0 26px;
}
.subject-picker-search:focus {
  outline: none;
  border-color: var(--tab-active-bg);
}

.subject-picker-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 22px 12px;
}

.subject-tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  border-radius: 16px;
  transition: transform 0.15s ease;
}
.subject-tile:hover { transform: translateY(-3px); }
.subject-tile:active { transform: scale(0.96); }
.subject-tile.is-hidden { display: none; }

.subject-tile-icon {
  width: 64px; height: 64px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.7rem;
  background: linear-gradient(145deg, var(--tab-active-bg), color-mix(in srgb, var(--tab-active-bg) 60%, #7c3aed));
  box-shadow: 0 8px 20px color-mix(in srgb, var(--tab-active-bg) 35%, transparent);
}

.subject-tile-name {
  font-size: 0.82rem;
  color: var(--text-primary);
  text-align: center;
  line-height: 1.2;
}

@media (max-width: 480px) {
  .subject-picker-panel { padding: 22px 18px 28px; border-radius: 20px; }
  .subject-tile-icon { width: 56px; height: 56px; font-size: 1.4rem; }
}
/* Swipe area */
.swipe-area {
    position: fixed;
    left: 0;
    top: 0;
    width: 15px;
    height: 100%;
    z-index: 80;
    background: transparent;
}

/* Course groups */
.course-group {
    margin-bottom: 16px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    overflow: hidden;
}

.course-header {
    background: var(--course-header-bg);
    padding: 12px 15px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 500;
    font-size: 0.9rem;
    transition: background 0.2s;
}

.course-header:hover {
    background: var(--course-header-hover);
}

.course-header h4 {
    margin: 0;
    color: var(--tab-active-bg);
    font-size: 0.85rem;
    font-weight: 500;
}

.dropdown-icon {
    font-size: 0.7rem;
    transition: transform 0.3s;
    color: var(--text-secondary);
}

.course-header.open .dropdown-icon {
    transform: rotate(180deg);
}

.course-topics {
    display: none;
    padding: 8px;
    background: var(--sidebar-bg);
}

.course-topics.show {
    display: block;
}

/* Topic buttons */
.topic-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    text-align: left;
    padding: 10px 12px;
    margin: 4px 0;
    border: none;
    background: var(--topic-btn-bg);
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s ease;
    color: var(--text-primary);
    white-space: normal;
    word-break: break-word;
}

.topic-btn:hover {
    background: var(--topic-btn-hover);
    transform: translateX(3px);
}

.topic-btn.active-topic {
    background: var(--topic-btn-active);
    color: white;
}

.topic-btn[disabled] {
    opacity: 0.5;
    cursor: not-allowed;
}

.topic-btn[disabled]:hover {
    transform: none;
}

/* Questions Area */
#questions-area {
    flex: 1;
    background: var(--bg-secondary);
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    padding: 25px;
    min-height: 500px;
    transition: background 0.3s ease;
}

#sidebar-title {
    font-size: 1rem;
    font-weight: normal;
}

#categories-list {
    max-height: 70vh;
    overflow-y: auto;
}

/* Scrollbar */
#categories-list::-webkit-scrollbar {
    width: 6px;
}

#categories-list::-webkit-scrollbar-track {
    background: var(--border-color);
    border-radius: 10px;
}

#categories-list::-webkit-scrollbar-thumb {
    background: var(--tab-active-bg);
    border-radius: 10px;
}

/* Welcome Message */
.welcome-message {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.welcome-message h2 {
    margin-bottom: 15px;
    color: var(--tab-active-bg);
}

/* Question Cards */
.question-card {
    background: var(--bg-card);
    border-left: 4px solid var(--tab-active-bg);
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 8px;
    transition: box-shadow 0.2s;
}

.question-card:hover {
    box-shadow: var(--card-hover-shadow);
}

.question-header {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
    font-size: 0.85rem;
    flex-wrap: wrap;
}

.question-year {
    background: var(--tab-active-bg);
    color: white;
    padding: 3px 10px;
    border-radius: 20px;
}

.question-year:first-child {
    background: var(--tab-active-bg);
}

.question-year:nth-child(2) {
    background: #198754;
}

.question-type {
    background: var(--text-secondary);
    color: white;
    padding: 3px 10px;
    border-radius: 20px;
}

.question-text {
    font-size: 1rem;
    line-height: 1.5;
    margin-bottom: 15px;
    font-weight: 500;
    color: var(--text-primary);
}

.options-list {
    list-style: none;
    margin-top: 12px;
    padding-left: 10px;
}

.options-list li {
    padding: 6px 0;
    font-size: 0.9rem;
    border-bottom: 1px dashed var(--border-color);
    color: var(--text-primary);
}

.essay-note {
    background: var(--essay-note-bg);
    padding: 10px;
    border-radius: 6px;
    margin-top: 12px;
    font-size: 0.85rem;
    color: var(--essay-note-text);
}

.loading {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
}

/* Back to Top Button */
#back-to-top {
    position: fixed;
    bottom: 100px;
    right: 30px;
    padding: 12px 18px;
    background: var(--tab-active-bg);
    color: white;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-size: 0.9rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    transition: all 0.3s;
    z-index: 100;
}

#back-to-top:hover {
    background: var(--tab-active-bg);
    transform: translateY(-3px);
}

/* ===== SUBTLE THEME TOGGLE ===== */
.theme-toggle {
    position: fixed;
    bottom: 160px;
    right: 30px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(4px);
    border: 1px solid rgba(0, 0, 0, 0.08);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    transition: all 0.3s ease;
    color: #64748b;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.95);
    border-color: rgba(0, 0, 0, 0.15);
    transform: scale(1.05);
    color: #0d6efd;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] .theme-toggle {
    background: rgba(30, 41, 59, 0.7);
    backdrop-filter: blur(4px);
    border-color: rgba(255, 255, 255, 0.08);
    color: #94a3b8;
}

[data-theme="dark"] .theme-toggle:hover {
    background: rgba(30, 41, 59, 0.95);
    border-color: rgba(255, 255, 255, 0.15);
    color: #60a5fa;
}

/* ===== MOBILE RESPONSIVE ===== */
@media (max-width: 768px) {
    .hamburger-btn {
        display: flex;
    }
    
    .header-container {
        justify-content: center;
    }
    
    .header-text h1 {
        font-size: 1.2rem;
    }
    
    .header-text p {
        font-size: 0.8rem;
    }
    
    .main-container {
        flex-direction: column;
        gap: 20px;
    }
    
    #categories-sidebar {
        position: fixed;
        top: 0;
        left: -100%;
        width: 280px;
        height: 100vh;
        z-index: 95;
        transition: left 0.3s ease;
        margin: 0;
        border-radius: 0;
        box-shadow: 2px 0 10px rgba(0,0,0,0.1);
        background: var(--sidebar-bg);
        overflow-y: auto;
    }
    
    #categories-sidebar.sidebar-open {
        left: 0;
    }
    
    .sidebar-collapse-btn {
        display: none;
    }
    
    .sidebar-close-btn {
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .swipe-area {
        width: 20px;
    }
    
    .subject-tabs button {
        padding: 8px 20px;
        font-size: 0.85rem;
    }
    
    .theme-toggle {
        bottom: 140px;
    }
    
    #back-to-top {
        bottom: 90px;
    }
}
/* ===== STICKY NAVBAR (DeepSeek Style) ===== */
.sticky-navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    padding: 8px 20px;
    z-index: 1000;
    transform: translateY(-100%);
    transition: transform 0.3s ease;
}

[data-theme="dark"] .sticky-navbar {
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    border-bottom-color: rgba(255, 255, 255, 0.05);
}

.sticky-navbar.visible {
    transform: translateY(0);
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.navbar-left {
    display: flex;
    align-items: center;
    gap: 15px;
}

/* Navbar Hamburger Button */
.navbar-hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
}

.navbar-hamburger span {
    width: 100%;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

[data-theme="dark"] .navbar-hamburger span {
    background: var(--text-primary);
}

/* Show hamburger on mobile */
@media (max-width: 768px) {
    .navbar-hamburger {
        display: flex;
    }
}

.navbar-logo {
    font-size: 1rem;
    font-weight: 600;
    color: #0d6efd;
    text-decoration: none;
}

[data-theme="dark"] .navbar-logo {
    color: #60a5fa;
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Navbar theme toggle */
.navbar-theme-toggle {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.05);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #64748b;
    transition: all 0.2s ease;
}

[data-theme="dark"] .navbar-theme-toggle {
    background: rgba(255, 255, 255, 0.1);
    color: #94a3b8;
}

.navbar-theme-toggle:hover {
    background: rgba(0, 0, 0, 0.1);
    color: #0d6efd;
}

[data-theme="dark"] .navbar-theme-toggle:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #60a5fa;
}

/* Hide original header when navbar is visible */
.header-hidden {
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

/* Hide original hamburger when navbar is visible (avoid duplicates) */
.header-hidden .hamburger-btn {
    display: none;
}

/* Remove floating theme toggle */
.theme-toggle {
    display: none;
}

/* Adjust main container margin */
.main-container {
    margin-top: 20px;
}

/* Mobile adjustment */
@media (max-width: 768px) {
    .navbar-logo {
        font-size: 0.85rem;
    }
    
    .navbar-theme-toggle {
        width: 28px;
        height: 28px;
    }
    
    .sticky-navbar {
        padding: 8px 16px;
    }
}

/* ===== QUIZ MODE TAB ===== */
.quiz-mode-tab {
    background: linear-gradient(135deg, #8b5cf6, #6d28d9) !important;
    color: white !important;
}

.quiz-mode-tab:hover {
    transform: translateY(-2px);
}

/* ===== STUDY MODE - SHOW ANSWER BUTTON ===== */
.show-answer-btn {
    background: var(--tab-active-bg, #0d6efd);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    margin-top: 12px;
    transition: all 0.2s ease;
}

.show-answer-btn:hover {
    background: var(--tab-active-bg, #0b5ed7);
    transform: translateY(-1px);
}

/* Answer Display */
.answer-display {
    margin-top: 12px;
    padding: 12px;
    border-radius: 8px;
    background: #d4edda;
    border-left: 4px solid #28a745;
    display: none;
}

.answer-display.show {
    display: block;
}

.answer-display .correct-answer {
    font-weight: bold;
    color: #155724;
    margin-bottom: 8px;
}

.answer-display .explanation {
    color: #155724;
    font-size: 0.9rem;
    line-height: 1.4;
}

[data-theme="dark"] .answer-display {
    background: #1a3a2a;
    border-left-color: #2ecc71;
}

[data-theme="dark"] .answer-display .correct-answer,
[data-theme="dark"] .answer-display .explanation {
    color: #a3e4b7;
}

/* Highlight correct option when answer revealed */
.option-correct-highlight {
    background: #d4edda !important;
    border-left: 3px solid #28a745 !important;
    font-weight: bold;
}

[data-theme="dark"] .option-correct-highlight {
    background: #1a3a2a !important;
    border-left-color: #2ecc71 !important;
}

/* Quiz Mode Coming Soon */
.quiz-coming-soon {
    text-align: center;
    padding: 80px 20px;
    background: var(--bg-secondary);
    border-radius: 12px;
    box-shadow: var(--card-shadow);
}

.quiz-coming-soon h2 {
    font-size: 2rem;
    color: var(--tab-active-bg);
    margin-bottom: 20px;
}

.quiz-coming-soon p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}
/* Essay Model Answer Styles */
.show-essay-answer-btn {
    background: #6c757d;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    margin-top: 12px;
    transition: all 0.2s ease;
}

.show-essay-answer-btn:hover {
    background: #5a6268;
    transform: translateY(-1px);
}

.essay-answer-display {
    margin-top: 12px;
    padding: 15px;
    background: #e8f4f8;
    border-left: 4px solid #17a2b8;
    border-radius: 8px;
    display: none;
}

.model-answer {
    color: #0c5460;
    font-size: 0.9rem;
    line-height: 1.5;
}

.model-answer strong {
    display: block;
    margin-bottom: 8px;
    color: #17a2b8;
}

[data-theme="dark"] .essay-answer-display {
    background: #1e3a5f;
    border-left-color: #60a5fa;
}

[data-theme="dark"] .model-answer {
    color: #93c5fd;
}

[data-theme="dark"] .model-answer strong {
    color: #60a5fa;
}

/* ============================================================
   ===== QUIZ MODE - COMPLETE STYLES ===========================
   ============================================================ */

/* ===== QUIZ LOBBY ===== */
.quiz-lobby {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px 0;
}

.quiz-lobby-header {
    text-align: center;
    margin-bottom: 30px;
}

.quiz-lobby-header h2 {
    font-size: 2rem;
    color: var(--tab-active-bg);
    margin-bottom: 8px;
}

.quiz-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Quiz Steps */
.quiz-step {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    opacity: 1;
    transform: translateY(0);
}

.quiz-step.hidden {
    display: none;
}

.quiz-step-label {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.step-number {
    background: var(--tab-active-bg);
    color: white;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: bold;
}

/* ===== QUIZ MODE CARDS ===== */
.quiz-mode-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
}

.quiz-mode-card {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    cursor: pointer;
    text-align: center;
    transition: all 0.2s ease;
}

.quiz-mode-card:hover:not(.disabled) {
    border-color: var(--tab-active-bg);
    transform: translateY(-3px);
    box-shadow: var(--card-hover-shadow);
}

.quiz-mode-card.selected {
    border-color: var(--tab-active-bg);
    background: rgba(13, 110, 253, 0.05);
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.1);
}

[data-theme="dark"] .quiz-mode-card.selected {
    background: rgba(59, 130, 246, 0.1);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.quiz-mode-card.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.qmc-icon {
    font-size: 2rem;
    margin-bottom: 10px;
}

.qmc-title {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1rem;
    margin-bottom: 4px;
}

.qmc-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
}
/* ===== QUIZ SUBJECT SELECTOR ===== */
.quiz-subject-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
}

.quiz-subject-card {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    cursor: pointer;
    text-align: center;
    transition: all 0.2s ease;
}

.quiz-subject-card:hover {
    border-color: var(--tab-active-bg);
    transform: translateY(-3px);
    box-shadow: var(--card-hover-shadow);
}

.quiz-subject-card.selected {
    border-color: var(--tab-active-bg);
    background: rgba(13, 110, 253, 0.05);
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.1);
}

[data-theme="dark"] .quiz-subject-card.selected {
    background: rgba(59, 130, 246, 0.1);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.quiz-subject-card .qmc-icon {
    font-size: 2.5rem;
    margin-bottom: 8px;
}

.quiz-subject-card .qmc-title {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1rem;
    margin-bottom: 4px;
}

.quiz-subject-card .qmc-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* ===== QUIZ FILTER OPTIONS ===== */
.quiz-filter-search {
    margin-bottom: 12px;
}

.quiz-search-input {
    width: 100%;
    padding: 10px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: border-color 0.2s;
}

.quiz-search-input:focus {
    outline: none;
    border-color: var(--tab-active-bg);
}

.quiz-filter-list {
    max-height: 300px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.quiz-filter-btn {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: all 0.2s ease;
    text-align: left;
}

.quiz-filter-btn:hover {
    border-color: var(--tab-active-bg);
    background: var(--topic-btn-hover);
}

.quiz-filter-btn.selected {
    border-color: var(--tab-active-bg);
    background: rgba(13, 110, 253, 0.08);
    font-weight: 600;
}

[data-theme="dark"] .quiz-filter-btn.selected {
    background: rgba(59, 130, 246, 0.12);
}

.filter-count {
    background: var(--border-color);
    color: var(--text-secondary);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

/* Year Grid */
.quiz-year-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 10px;
}

.quiz-year-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 16px 12px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.quiz-year-btn:hover {
    border-color: var(--tab-active-bg);
    transform: translateY(-2px);
}

.quiz-year-btn.selected {
    border-color: var(--tab-active-bg);
    background: rgba(13, 110, 253, 0.05);
}

.year-num {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
}

.year-count {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* ===== QUESTION COUNT GRID ===== */
.quiz-count-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.quiz-count-btn {
    padding: 12px 24px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.quiz-count-btn:hover:not(.disabled) {
    border-color: var(--tab-active-bg);
    transform: translateY(-2px);
}

.quiz-count-btn.active {
    background: var(--tab-active-bg);
    color: white;
    border-color: var(--tab-active-bg);
}

.quiz-count-btn.disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.quiz-available-count {
    margin-top: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ===== TIMER GRID ===== */
.quiz-timer-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.quiz-timer-btn {
    padding: 12px 20px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.quiz-timer-btn:hover {
    border-color: var(--tab-active-bg);
    transform: translateY(-2px);
}

.quiz-timer-btn.active {
    background: var(--tab-active-bg);
    color: white;
    border-color: var(--tab-active-bg);
}

.exam-sim-btn {
    background: linear-gradient(135deg, #f59e0b, #d97706) !important;
    color: white !important;
    border-color: transparent !important;
    position: relative;
    overflow: hidden;
}

.exam-sim-btn:hover {
    opacity: 0.9;
}

.exam-sim-btn.active {
    box-shadow: 0 4px 16px rgba(245, 158, 11, 0.4);
}

.exam-badge {
    display: block;
    font-size: 0.7rem;
    opacity: 0.9;
    margin-top: 2px;
}

/* ===== QUIZ SUMMARY ===== */
.quiz-summary {
    margin-bottom: 20px;
}

.quiz-summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
}

.qs-item {
    background: var(--bg-secondary);
    padding: 16px;
    border-radius: 10px;
    text-align: center;
    border: 1px solid var(--border-color);
}

.qs-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.qs-value {
    display: block;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Start Button */
.quiz-start-btn {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, #22c55e, #16a34a);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.2rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px rgba(34, 197, 94, 0.3);
}

.quiz-start-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 24px rgba(34, 197, 94, 0.4);
}


/* ============================================================
   ===== QUIZ EXAM SCREEN ======================================
   ============================================================ */
.quiz-exam-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

/* Top Bar */
.quiz-top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    background: var(--bg-card);
    border-radius: 12px;
    margin-bottom: 16px;
    border: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 12px;
}

.quiz-meta {
    flex: 1;
    min-width: 200px;
}

.quiz-progress-text {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.quiz-progress-bar-wrap {
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    margin: 8px 0;
    overflow: hidden;
}

.quiz-progress-bar-fill {
    height: 100%;
    background: var(--tab-active-bg);
    border-radius: 3px;
    transition: width 0.4s ease;
}

.quiz-stats-inline {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.quiz-top-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Timer Box */
.quiz-timer-box {
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--bg-secondary);
    padding: 8px 14px;
    border-radius: 8px;
    border: 2px solid var(--border-color);
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.quiz-timer-box.timer-warning {
    border-color: #ef4444;
    color: #ef4444;
    animation: pulse-warning 1s infinite;
}

@keyframes pulse-warning {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

/* Submit Button */
.quiz-submit-early-btn {
    padding: 8px 18px;
    background: #ef4444;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.85rem;
    transition: all 0.2s ease;
}

.quiz-submit-early-btn:hover {
    background: #dc2626;
    transform: translateY(-1px);
}

/* ===== QUIZ NAVIGATOR ===== */
.quiz-navigator {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 16px;
    padding: 12px;
    background: var(--bg-card);
    border-radius: 10px;
    border: 1px solid var(--border-color);
    max-height: 120px;
    overflow-y: auto;
}

.nav-dot {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-dot:hover {
    border-color: var(--tab-active-bg);
    transform: scale(1.1);
}

.nav-dot.current {
    border-color: var(--tab-active-bg);
    background: var(--tab-active-bg);
    color: white;
    box-shadow: 0 0 0 4px rgba(13, 110, 253, 0.15);
}

.nav-dot.answered {
    background: #d4edda;
    border-color: #28a745;
    color: #155724;
}

[data-theme="dark"] .nav-dot.answered {
    background: #1a3a2a;
    border-color: #2ecc71;
    color: #a3e4b7;
}

.nav-dot.flagged {
    position: relative;
}

.nav-dot.flagged::after {
    content: '🚩';
    position: absolute;
    top: -8px;
    right: -8px;
    font-size: 0.6rem;
}

/* ===== QUIZ QUESTION CARD ===== */
.quiz-question-card {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 24px;
    border: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
}

.quiz-q-meta {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.quiz-q-badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
}

.quiz-q-badge.year-badge {
    background: var(--tab-active-bg);
    color: white;
}

.quiz-q-badge.cat-badge {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.quiz-q-badge.flag-badge {
    background: #fef3c7;
    color: #92400e;
}

[data-theme="dark"] .quiz-q-badge.flag-badge {
    background: #422b00;
    color: #fcd34d;
}

.quiz-question-text {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text-primary);
    margin-bottom: 20px;
    font-weight: 500;
}

.quiz-diagram-note {
    background: var(--warning-bg);
    color: var(--warning-text);
    border-left: 3px solid var(--warning-border);
    padding: 10px 14px;
    border-radius: 6px;
    margin-bottom: 16px;
    font-size: 0.85rem;
}

/* ===== QUIZ OPTIONS ===== */
.quiz-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
}

.quiz-option-btn {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 18px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
    color: var(--text-primary);
}

.quiz-option-btn:hover {
    border-color: var(--tab-active-bg);
    background: rgba(13, 110, 253, 0.03);
}

.quiz-option-btn.selected {
    border-color: var(--tab-active-bg);
    background: rgba(13, 110, 253, 0.08);
    font-weight: 500;
}

[data-theme="dark"] .quiz-option-btn.selected {
    background: rgba(59, 130, 246, 0.12);
}

.option-label {
    background: var(--border-color);
    color: var(--text-secondary);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
    flex-shrink: 0;
    transition: all 0.2s ease;
}

.quiz-option-btn.selected .option-label {
    background: var(--tab-active-bg);
    color: white;
}

.option-text {
    font-size: 0.95rem;
    line-height: 1.4;
}

/* ===== QUIZ CARD ACTIONS ===== */
.quiz-card-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    gap: 12px;
}

.quiz-flag-btn {
    padding: 8px 16px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.quiz-flag-btn:hover {
    background: var(--border-color);
}

.quiz-flag-btn.flagged {
    background: #fef3c7;
    color: #92400e;
    border-color: #f59e0b;
}

[data-theme="dark"] .quiz-flag-btn.flagged {
    background: #422b00;
    color: #fcd34d;
    border-color: #f59e0b;
}

.quiz-nav-btns {
    display: flex;
    gap: 8px;
}

.quiz-prev-btn,
.quiz-next-btn {
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.2s ease;
    border: none;
}

.quiz-prev-btn {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.quiz-prev-btn:hover:not(:disabled) {
    background: var(--border-color);
}

.quiz-prev-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.quiz-next-btn {
    background: var(--tab-active-bg);
    color: white;
}

.quiz-next-btn:hover {
    background: var(--tab-active-bg);
    filter: brightness(1.1);
    transform: translateY(-1px);
}

/* ============================================================
   ===== QUIZ REVIEW SCREEN ====================================
   ============================================================ */
.quiz-review-screen {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    padding: 20px 0;
}

.quiz-review-screen h2 {
    font-size: 1.8rem;
    color: var(--text-primary);
    margin-bottom: 24px;
}

.quiz-review-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 24px;
}

.review-stat {
    background: var(--bg-card);
    padding: 20px 12px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    text-align: center;
}

.review-stat.answered {
    border-left: 4px solid #3b82f6;
}

.review-stat.unanswered {
    border-left: 4px solid #f59e0b;
}

.review-stat.flagged-stat {
    border-left: 4px solid #ef4444;
}

.rs-num {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.rs-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

.review-flagged-section {
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    flex-wrap: wrap;
}

.review-jump-btn {
    padding: 6px 12px;
    background: #fef3c7;
    border: 1px solid #f59e0b;
    color: #92400e;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 500;
}

.review-jump-btn:hover {
    background: #fde68a;
}

.review-warning {
    color: #f59e0b;
    font-weight: 500;
    margin-bottom: 16px;
}

.review-all-done {
    color: #22c55e;
    font-weight: 500;
    margin-bottom: 16px;
}

.review-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.review-back-btn,
.review-submit-btn {
    padding: 14px 28px;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
}

.review-back-btn {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.review-back-btn:hover {
    background: var(--border-color);
}

.review-submit-btn {
    background: linear-gradient(135deg, #22c55e, #16a34a);
    color: white;
    box-shadow: 0 4px 16px rgba(34, 197, 94, 0.3);
}

.review-submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(34, 197, 94, 0.4);
}

/* ============================================================
   ===== QUIZ DEBRIEF / RESULTS ================================
   ============================================================ */
.quiz-debrief {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px 0;
}

.time-up-banner {
    text-align: center;
    padding: 16px;
    background: #fee2e2;
    color: #991b1b;
    border-radius: 12px;
    font-weight: 600;
    margin-bottom: 24px;
}

[data-theme="dark"] .time-up-banner {
    background: #3b1111;
    color: #fca5a5;
}

/* Hero Section */
.debrief-hero {
    display: flex;
    align-items: center;
    gap: 30px;
    padding: 30px;
    background: var(--bg-card);
    border-radius: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
    justify-content: center;
}

.debrief-score-ring {
    position: relative;
    width: 140px;
    height: 140px;
    flex-shrink: 0;
}

.score-ring-svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.ring-track {
    fill: none;
    stroke: var(--border-color);
    stroke-width: 8;
}

.ring-fill {
    fill: none;
    stroke: #22c55e;
    stroke-width: 8;
    stroke-linecap: round;
    transition: stroke-dashoffset 1s ease;
    stroke-dasharray: 327;
}

.score-ring-label {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.score-pct {
    display: block;
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
}

.score-grade {
    display: block;
    font-size: 1.2rem;
    font-weight: 700;
    margin-top: 4px;
}

.debrief-summary-text {
    text-align: center;
}

.debrief-summary-text h2 {
    font-size: 1.6rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.debrief-stats-row {
    display: flex;
    gap: 20px;
    margin-bottom: 12px;
    justify-content: center;
}

.ds-item {
    text-align: center;
}

.ds-num {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
}

.correct-item .ds-num { color: #22c55e; }
.incorrect-item .ds-num { color: #ef4444; }
.skipped-item .ds-num { color: #f59e0b; }

.ds-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.debrief-time {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 8px;
}

/* Debrief Sections */
.debrief-section {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
}

.debrief-section h3 {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 16px;
}

/* Topic Breakdown */
.topic-breakdown {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.topic-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.topic-name {
    width: 180px;
    font-size: 0.85rem;
    color: var(--text-primary);
    flex-shrink: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.topic-bar-wrap {
    flex: 1;
    height: 10px;
    background: var(--border-color);
    border-radius: 5px;
    overflow: hidden;
}

.topic-bar {
    height: 100%;
    border-radius: 5px;
    transition: width 0.6s ease;
}

.topic-pct {
    font-size: 0.8rem;
    font-weight: 600;
    width: 40px;
    text-align: right;
}

/* Debrief Actions */
.debrief-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

.da-btn {
    padding: 14px 24px;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
}

.da-btn.primary {
    background: var(--tab-active-bg);
    color: white;
}

.da-btn.primary:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
}

.da-btn.secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.da-btn.secondary:hover:not(:disabled) {
    background: var(--border-color);
    transform: translateY(-2px);
}

.da-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ===== ANSWER REVIEW CARDS ===== */
.review-q-card {
    background: var(--bg-secondary);
    border-radius: 10px;
    padding: 16px;
    margin-bottom: 12px;
    border-left: 4px solid var(--border-color);
}

.review-q-card.rq-correct { border-left-color: #22c55e; }
.review-q-card.rq-wrong { border-left-color: #ef4444; }
.review-q-card.rq-skipped { border-left-color: #f59e0b; }

.rq-header {
    display: flex;
    gap: 8px;
    margin-bottom: 10px;
    flex-wrap: wrap;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.rq-num {
    font-weight: 700;
    color: var(--text-primary);
}

.rq-question {
    font-size: 0.95rem;
    color: var(--text-primary);
    margin-bottom: 10px;
    line-height: 1.5;
}

.rq-options {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 8px;
}

.rq-opt {
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 0.85rem;
    background: var(--bg-card);
}

.rq-opt-correct {
    background: #d4edda;
    color: #155724;
}

[data-theme="dark"] .rq-opt-correct {
    background: #1a3a2a;
    color: #a3e4b7;
}

.rq-opt-wrong {
    background: #fce4e4;
    color: #991b1b;
}

[data-theme="dark"] .rq-opt-wrong {
    background: #3b1111;
    color: #fca5a5;
}

.rq-your-ans,
.rq-correct-ans {
    font-size: 0.85rem;
    margin-top: 4px;
    color: var(--text-primary);
}

.rq-explanation {
    margin-top: 8px;
    padding: 10px;
    background: #e8f4f8;
    border-radius: 6px;
    font-size: 0.85rem;
    color: #0c5460;
}

[data-theme="dark"] .rq-explanation {
    background: #1e3a5f;
    color: #93c5fd;
}

/* ===== QUIZ MODE MOBILE RESPONSIVE ===== */
@media (max-width: 768px) {
    .quiz-mode-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .quiz-review-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .debrief-hero {
        flex-direction: column;
        text-align: center;
    }
    
    .debrief-stats-row {
        flex-wrap: wrap;
    }
    
    .quiz-top-bar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .quiz-top-actions {
        justify-content: space-between;
    }
    
    .quiz-navigator {
        gap: 4px;
    }
    
    .nav-dot {
        width: 28px;
        height: 28px;
        font-size: 0.7rem;
    }
    
    .quiz-year-grid {
        grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    }
    
    .quiz-card-actions {
        flex-direction: column;
    }
    
    .quiz-nav-btns {
        width: 100%;
        justify-content: space-between;
    }
    
    .topic-name {
        width: 120px;
        font-size: 0.75rem;
    }
    
    .quiz-lobby-header h2 {
        font-size: 1.5rem;
    }
}

@media (max-width: 400px) {
    .quiz-mode-grid {
        grid-template-columns: 1fr;
    }
    
    .quiz-count-grid {
        justify-content: center;
    }
    
    .quiz-count-btn {
        padding: 10px 16px;
        font-size: 0.9rem;
    }
}

/* ===== ENHANCED WEAK AREAS CARD ===== */
.weak-area-card {
    position: relative;
    overflow: hidden;
}

.weak-area-card.all-strong {
    border-color: #22c55e !important;
    background: rgba(34, 197, 94, 0.03) !important;
}

[data-theme="dark"] .weak-area-card.all-strong {
    background: rgba(34, 197, 94, 0.06) !important;
}

.weak-progress-bar {
    width: 100%;
    height: 4px;
    background: var(--border-color);
    border-radius: 2px;
    margin-top: 10px;
    overflow: hidden;
}

.weak-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #f59e0b, #ef4444);
    border-radius: 2px;
    transition: width 0.5s ease;
}

.weak-progress-label {
    font-size: 0.7rem;
    color: var(--text-secondary);
    margin-top: 4px;
    text-align: center;
}

.weak-topics-preview {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-top: 8px;
    justify-content: center;
}

.weak-topic-tag {
    font-size: 0.65rem;
    padding: 2px 6px;
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border-radius: 8px;
    white-space: nowrap;
}

[data-theme="dark"] .weak-topic-tag {
    background: rgba(239, 68, 68, 0.15);
    color: #fca5a5;
}

/* ===== QUESTION NUMBER BADGE (Study Mode) ===== */
.question-number-badge {
    background: #198754;
    color: white;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.question-diagram-badge {
    background: var(--warning-bg);
    color: var(--warning-text);
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    border: 1px dashed var(--warning-border);
}

/* ===== QUIZ BADGES ===== */
.quiz-q-badge.num-badge {
    background: #6366f1;
    color: white;
}

.quiz-q-badge.diagram-badge {
    background: var(--warning-bg);
    color: var(--warning-text);
    border: 1px dashed var(--warning-border);
}

/* ===== REVIEW CARD BADGES ===== */
.rq-paper-num {
    font-size: 0.8rem;
    color: #6366f1;
    font-weight: 500;
}

.rq-diagram-badge {
    font-size: 0.8rem;
}

/* ===== MULTI-SELECT TOPICS ===== */
.multi-select-hint {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    text-align: center;
}

.multi-select-hint #selected-count {
    font-weight: 700;
    color: var(--tab-active-bg);
}

.quiz-confirm-topics-btn {
    display: block;
    width: 100%;
    margin-top: 12px;
    padding: 12px;
    background: var(--tab-active-bg);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.quiz-confirm-topics-btn:hover:not(:disabled) {
    filter: brightness(1.1);
    transform: translateY(-1px);
}

.quiz-confirm-topics-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.no-data-message {
    text-align: center;
    padding: 20px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ===== IMPROVED SWIPE AREA (Reduced sensitivity) ===== */
.swipe-area {
    position: fixed;
    left: 0;
    top: 0;
    width: 12px; /* Narrower edge zone */
    height: 100%;
    z-index: 80;
    background: transparent;
}

/* ===== MOBILE ADJUSTMENTS ===== */
@media (max-width: 768px) {
    .question-header {
        gap: 6px;
    }
    
    .question-number-badge,
    .question-diagram-badge {
        font-size: 0.7rem;
        padding: 2px 8px;
    }
    
    .quiz-q-badge.num-badge,
    .quiz-q-badge.diagram-badge {
        font-size: 0.7rem;
        padding: 2px 8px;
    }
    
    .rq-paper-num {
        font-size: 0.7rem;
    }
    
    .swipe-area {
        width: 10px;
    }
}
/* Question count badge on topic buttons */
.question-count {
    background: var(--tab-active-bg);
    color: white;
    padding: 1px 8px;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 600;
    margin-left: auto;
    flex-shrink: 0;
}

.topic-btn[disabled] .question-count {
    display: none;
}
/* ===== PAST QUESTIONS MODE ===== */
.past-questions-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--border-color);
    flex-wrap: wrap;
    gap: 12px;
}

.past-take-quiz-btn {
    padding: 10px 20px;
    background: linear-gradient(135deg, #8b5cf6, #6d28d9);
    color: white;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    white-space: nowrap;
    transition: all 0.2s ease;
}

.past-take-quiz-btn:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.past-questions-tab {
    background: linear-gradient(135deg, #059669, #047857) !important;
    color: white !important;
}

/* Better loading states */
.loading-container {
    text-align: center;
    padding: 60px 20px;
}

.loading-container .loading-spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--tab-active-bg);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.loading-container p {
    margin-top: 16px;
    color: var(--text-secondary);
    font-size: 1rem;
}

.loading-container .loading-sub {
    margin-top: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    opacity: 0.7;
}

/* Loading in sidebar */
.sidebar-loading {
    text-align: center;
    padding: 40px 20px;
}

.sidebar-loading .loading-spinner {
    display: inline-block;
    width: 30px;
    height: 30px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--tab-active-bg);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.sidebar-loading p {
    margin-top: 12px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ===== FOOTER ===== */
.app-footer {
    flex-shrink: 0;
    margin-top: auto;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 24px 24px 20px;
    transition: background 0.3s ease;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.footer-top {
    text-align: center;
}

.footer-tagline {
    font-size: 1rem;
    font-weight: 500;
    color: var(--tab-active-bg);
    font-style: italic;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    padding-top: 8px;
    border-top: 1px solid var(--border-color);
}

.footer-left,
.footer-center,
.footer-right {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.footer-brand {
    font-weight: 600;
    color: var(--text-primary);
}

.footer-version {
    background: var(--tab-active-bg);
    color: white;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.footer-copyright {
    color: var(--text-secondary);
}

.footer-dot {
    color: var(--border-color);
}

.footer-updated {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.footer-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 6px 12px;
    border-radius: 6px;
    transition: all 0.2s ease;
    font-size: 0.85rem;
    border: 1px solid var(--border-color);
}

.footer-link:hover {
    color: var(--tab-active-bg);
    border-color: var(--tab-active-bg);
    background: rgba(13, 110, 253, 0.03);
}

[data-theme="dark"] .footer-link:hover {
    background: rgba(59, 130, 246, 0.08);
}

.footer-disclaimer {
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-secondary);
    opacity: 0.7;
    font-style: italic;
    padding-top: 4px;
}

/* Mobile */
@media (max-width: 768px) {
    .footer-bottom {
        flex-direction: column;
        gap: 12px;
    }
    
    .footer-left,
    .footer-center,
    .footer-right {
        justify-content: center;
        text-align: center;
    }
    
    .footer-tagline {
        font-size: 0.9rem;
    }
}
.sidebar-footer,
.sidebar-user-info,
.sidebar-user-name,
.sidebar-user-plan {
    background: transparent;
    border: none;
    box-shadow: none;
    padding: 0;
}

.sidebar-footer {
    padding: 12px 8px 0;
    border-top: 1px solid var(--dash-border);
}

/* ===== DASHBOARD TOUCH-UP + NOTIFICATION BELL =====
   Paste this at the very END of your stylesheet (after the sidebar and dashboard
   CSS) so it wins over the older rules. Everything dashboard-related is scoped to
   #dashboard-screen, so Settings and Help & Support are not affected. */

/* ---------- Header: greeting on the left, date + bell on the right ---------- */
#dashboard-screen .dashboard-header { grid-template-columns: 1fr auto; }
#dashboard-screen .dash-header-actions { display: flex; align-items: center; gap: 14px; }

.bell-btn {
  position: relative;
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid var(--dash-border);
  background: var(--bg-secondary);
  color: var(--text-primary);
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.bell-btn:hover { border-color: var(--tab-active-bg); color: var(--tab-active-bg); }
.bell-dot {
  position: absolute; top: 7px; right: 8px;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--dash-danger);
  border: 2px solid var(--bg-secondary);
  display: none;
}
.bell-dot.is-on { display: block; }

/* ---------- Phones and small tablets ---------- */
@media (max-width: 900px) {
  /* The fixed ☰ button now sits BESIDE the greeting instead of above it,
     which removes the empty row at the top. */
  #dashboard-screen { padding-top: 0; }
  #dashboard-screen .dash-shell { padding: 14px 16px 28px; gap: 12px; }
  #dashboard-screen .dashboard-header {
    display: flex; align-items: center; justify-content: space-between;
    gap: 12px; min-height: 40px; padding-left: 50px;
  }
  #dashboard-screen .dash-greeting h2 { font-size: 1.15rem; line-height: 1.25; }
  #dash-user-name, #dash-date { display: none; }

  /* The ☰ button stays on top of the open drawer, so start the drawer's
     content below it (it was covering the logo). */
  .app-sidebar { padding-top: 64px; }

  /* Cards */
  #dashboard-screen .dash-card { padding: 16px; }
  #dashboard-screen .dash-continue-card h3 { font-size: 1.15rem; }
  #dashboard-screen .dash-progress-track { margin: 12px 0; }
  #dashboard-screen .dash-btn-primary { width: 100%; padding: 12px 16px; }
  #dashboard-screen .dash-streak-number { font-size: 1.8rem; }
  #dashboard-screen .streak-dots { justify-content: space-between; margin-top: 12px; }
  #dashboard-screen .streak-dot { width: 36px; height: 36px; }

  /* Quick Access: three tiles per row instead of one per row */
  #dashboard-screen .dash-subject-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
  #dashboard-screen .dash-subject-tile { padding: 12px 6px; }
  #dashboard-screen .dash-subject-tile h4 { font-size: 0.8rem; margin-top: 6px; }
  /* The Edit tile becomes a slim full-width row under the subjects */
  #dashboard-screen .dash-add-subject-tile {
    grid-column: 1 / -1; flex-direction: row; min-height: 44px; padding: 8px 12px; font-size: 0.85rem;
  }
  #dashboard-screen .dash-add-subject-tile .plus-icon { font-size: 1.1rem; }
}

/* ===== HOME SCREEN =====
   Paste at the very END of your stylesheet. Uses your existing colour variables,
   so dark mode works. All class names start with "home-", so nothing else is affected. */

#login-screen {
  background: radial-gradient(900px 420px at 50% -8%, color-mix(in srgb, var(--tab-active-bg) 16%, transparent), transparent 70%);
}
.home { max-width: 540px; margin: 0 auto; padding: 18px 18px 40px; color: var(--text-primary); }

/* Top bar */
.home-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.home-brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.05rem; }
.home-brand img { border-radius: 10px; display: block; }
.home-theme {
  width: 38px; height: 38px; border-radius: 50%;
  background: var(--bg-secondary); border: 1px solid var(--dash-border); color: var(--text-secondary);
  display: flex; align-items: center; justify-content: center; cursor: pointer;
}

/* Slideshow */
.home-hero {
  position: relative; overflow: hidden; touch-action: pan-y;
  border-radius: 24px; color: #fff;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.18);
}
.home-slides { display: flex; transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1); }
.home-slide {
  flex: 0 0 100%; min-height: 340px; padding: 40px 22px 26px;
  display: flex; flex-direction: column; position: relative; overflow: hidden;
}
.home-slide::before, .home-slide::after {
  content: ""; position: absolute; border-radius: 50%; background: rgba(255, 255, 255, 0.08); pointer-events: none;
}
.home-slide::before { width: 220px; height: 220px; right: -80px; top: -90px; }
.home-slide::after { width: 150px; height: 150px; left: -60px; bottom: -70px; }
.home-slide > * { position: relative; z-index: 1; }
.home-slide--blue   { background: linear-gradient(140deg, #1a73ff, #0b3fb5); }
.home-slide--violet { background: linear-gradient(140deg, #8b5cf6, #5b21b6); }
.home-slide--orange { background: linear-gradient(140deg, #ea580c, #9a3412); }
.home-slide--green  { background: linear-gradient(140deg, #059669, #065f46); }
.home-slide--rose   { background: linear-gradient(140deg, #db2777, #9d174d); }
.home-slide--teal   { background: linear-gradient(140deg, #0891b2, #155e75); }

.home-eyebrow {
  align-self: flex-start; margin-bottom: 12px; padding: 4px 10px; border-radius: 999px;
  background: rgba(255, 255, 255, 0.18); font-size: 0.68rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
}
.home-slide h2 { margin: 0 0 8px; font-size: clamp(1.45rem, 6.4vw, 1.9rem); line-height: 1.12; font-weight: 800; letter-spacing: -0.02em; }
.home-slide p { margin: 0 0 14px; font-size: 0.93rem; line-height: 1.5; opacity: 0.92; max-width: 34ch; }

/* Little pictures of the app inside each slide */
.home-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; }
.home-chips span { padding: 5px 9px; border-radius: 999px; background: rgba(255, 255, 255, 0.16); font-size: 0.72rem; font-weight: 600; }
.home-demo {
  margin-top: auto; padding: 12px 14px; border-radius: 14px;
  background: rgba(255, 255, 255, 0.14); border: 1px solid rgba(255, 255, 255, 0.2);
}
.home-demo-q { font-size: 0.8rem; font-weight: 600; line-height: 1.4; margin-bottom: 8px; }
.home-demo-opt { padding: 7px 10px; border-radius: 9px; background: rgba(255, 255, 255, 0.95); color: #166534; font-size: 0.8rem; font-weight: 700; }
.home-demo-why { margin-top: 9px; font-size: 0.78rem; line-height: 1.45; opacity: 0.95; }
.home-quiz-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; font-size: 0.8rem; font-weight: 600; }
.home-timer { padding: 4px 10px; border-radius: 999px; background: rgba(255, 255, 255, 0.95); color: #9a3412; font-weight: 800; }
.home-bar { height: 8px; border-radius: 999px; background: rgba(255, 255, 255, 0.25); overflow: hidden; }
.home-bar i { display: block; height: 100%; border-radius: 999px; background: #fff; }
.home-row { display: grid; grid-template-columns: 1fr 1.3fr; gap: 12px; align-items: center; margin: 8px 0; font-size: 0.78rem; font-weight: 600; }
.home-demo--people { display: flex; align-items: center; gap: 14px; }
.home-avatars { display: flex; }
.home-avatars span {
  width: 36px; height: 36px; border-radius: 50%; margin-left: -10px; border: 2px solid rgba(255, 255, 255, 0.9);
  background: linear-gradient(135deg, #fde68a, #f59e0b);
}
.home-avatars span:first-child { margin-left: 0; }
.home-avatars span:nth-child(2) { background: linear-gradient(135deg, #a7f3d0, #10b981); }
.home-avatars span:nth-child(3) { background: linear-gradient(135deg, #bfdbfe, #3b82f6); }
.home-avatars span:nth-child(4) { background: linear-gradient(135deg, #ddd6fe, #8b5cf6); }
.home-avatars .home-avatar-more { display: flex; align-items: center; justify-content: center; background: #fff; color: #9d174d; font-size: 0.7rem; font-weight: 800; }
.home-people-note { font-size: 0.82rem; font-weight: 600; line-height: 1.35; }
.home-demo--phone { display: flex; align-items: center; gap: 16px; }
.home-phone { flex: 0 0 auto; width: 84px; padding: 12px 8px 10px; border-radius: 18px; background: rgba(255, 255, 255, 0.18); text-align: center; border: 1px solid rgba(255, 255, 255, 0.25); }
.home-phone img { display: block; margin: 0 auto 6px; border-radius: 11px; }
.home-phone small { font-size: 0.65rem; font-weight: 700; letter-spacing: 0.04em; }
.home-phone-steps { font-size: 0.82rem; line-height: 1.5; }

/* Story-style progress bars: they fill over 5 seconds, then the next slide appears */
.home-segs { position: absolute; top: 8px; left: 16px; right: 16px; display: flex; gap: 6px; z-index: 3; }
.home-seg { flex: 1; height: 22px; padding: 9px 0; border: none; background: none; cursor: pointer; }
.home-seg span { display: block; position: relative; height: 4px; border-radius: 999px; background: rgba(255, 255, 255, 0.3); overflow: hidden; }
.home-seg span::after { content: ""; position: absolute; inset: 0; width: 0; border-radius: inherit; background: #fff; }
.home-seg.is-done span::after { width: 100%; }
.home-seg.is-on span::after { animation: home-fill 5s linear forwards; }
.home-hero.is-paused .home-seg.is-on span::after { animation-play-state: paused; }
@keyframes home-fill { from { width: 0; } to { width: 100%; } }
@media (prefers-reduced-motion: reduce) {
  .home-seg.is-on span::after { animation: none; width: 100%; }
  .home-slides { transition: none; }
}

/* Price + buttons */
.home-price { display: flex; align-items: baseline; justify-content: center; flex-wrap: wrap; gap: 10px; margin: 22px 0 14px; }
.home-price-amount { font-size: 2rem; font-weight: 800; }
.home-price-note { font-size: 0.9rem; color: var(--text-secondary); }
.home-btn {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  width: 100%; padding: 15px 18px; border-radius: 14px; border: 2px solid transparent;
  font-family: inherit; font-size: 1rem; font-weight: 700; text-decoration: none; cursor: pointer;
}
.home-btn--primary {
  background: var(--tab-active-bg); color: #fff;
  box-shadow: 0 8px 22px color-mix(in srgb, var(--tab-active-bg) 40%, transparent);
}
.home-btn--google { margin-top: 10px; background: #fff; color: #1a1a2e; border-color: #e3e6ea; font-weight: 600; }
.home-btn--whatsapp { margin-top: 14px; background: #25d366; color: #fff; }
.home-link {
  display: block; margin: 14px auto 0; background: none; border: none; cursor: pointer;
  color: var(--tab-active-bg); font-family: inherit; font-size: 0.92rem; font-weight: 600;
}

/* How to get access */
.home-access { margin-top: 18px; padding: 18px; background: var(--bg-secondary); border: 1px solid var(--dash-border); border-radius: 16px; }
.home-access h3 { margin: 0 0 12px; font-size: 1.05rem; }
.home-steps { list-style: none; counter-reset: step; margin: 0; padding: 0; }
.home-steps li { position: relative; counter-increment: step; padding: 0 0 14px 38px; font-size: 0.92rem; line-height: 1.5; color: var(--text-secondary); }
.home-steps li::before {
  content: counter(step); position: absolute; left: 0; top: 0; width: 26px; height: 26px; border-radius: 50%;
  background: var(--tab-active-bg); color: #fff; font-size: 0.8rem; font-weight: 700; display: flex; align-items: center; justify-content: center;
}
.home-steps strong { color: var(--text-primary); }
.home-mono { font-family: ui-monospace, Menlo, Consolas, monospace; font-weight: 700; color: var(--text-primary); }

/* FAQ */
.home-faq { margin-top: 30px; }
.home-faq h3 { margin: 0 0 10px; font-size: 1.1rem; }
.home-faq-item { border-bottom: 1px solid var(--dash-border); }
.home-faq-item summary {
  list-style: none; cursor: pointer; padding: 15px 28px 15px 2px; position: relative;
  font-size: 0.95rem; font-weight: 600;
}
.home-faq-item summary::-webkit-details-marker { display: none; }
.home-faq-item summary::after { content: "+"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%); font-size: 1.3rem; font-weight: 400; color: var(--text-secondary); }
.home-faq-item[open] summary::after { content: "–"; }
.home-faq-item p { margin: 0 0 16px; padding-right: 8px; font-size: 0.9rem; line-height: 1.6; color: var(--text-secondary); }

/* Free sample modal */
.home-modal { position: fixed; inset: 0; z-index: 3000; display: flex; align-items: flex-end; justify-content: center; visibility: hidden; opacity: 0; transition: opacity 0.2s ease, visibility 0.2s ease; }
.home-modal.is-open { visibility: visible; opacity: 1; }
.home-modal-backdrop { position: absolute; inset: 0; background: rgba(8, 10, 20, 0.55); backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); }
.home-modal-card {
  position: relative; width: 100%; max-width: 540px; max-height: 90vh; overflow-y: auto;
  background: var(--bg-secondary); color: var(--text-primary);
  border-radius: 22px 22px 0 0; padding: 26px 20px 28px;
  transform: translateY(30px); transition: transform 0.25s ease;
}
.home-modal.is-open .home-modal-card { transform: none; }
@media (min-width: 600px) { .home-modal { align-items: center; } .home-modal-card { border-radius: 22px; } }
.home-modal-close { position: absolute; top: 12px; right: 12px; width: 34px; height: 34px; border: none; border-radius: 50%; background: var(--bg-primary); color: var(--text-secondary); font-size: 1.2rem; cursor: pointer; }
.home-sample-meta { margin: 0 34px 10px 0; font-size: 0.8rem; color: var(--text-secondary); }
.home-sample-q { margin: 0 0 16px; font-size: 1.05rem; line-height: 1.45; font-weight: 700; }
.home-sample-options { display: flex; flex-direction: column; gap: 10px; }
.home-sample-opt {
  display: flex; align-items: flex-start; gap: 12px; width: 100%; padding: 12px 14px; text-align: left;
  background: var(--bg-primary); color: var(--text-primary); border: 2px solid var(--dash-border); border-radius: 12px;
  font-family: inherit; font-size: 0.95rem; line-height: 1.4; cursor: pointer;
}
.home-sample-letter { flex: 0 0 24px; height: 24px; border-radius: 50%; background: var(--dash-border); font-size: 0.78rem; font-weight: 700; display: flex; align-items: center; justify-content: center; }
.home-sample-opt.is-correct { border-color: var(--dash-success); background: color-mix(in srgb, var(--dash-success) 14%, var(--bg-secondary)); }
.home-sample-opt.is-wrong { border-color: var(--dash-danger); background: color-mix(in srgb, var(--dash-danger) 12%, var(--bg-secondary)); }
.home-sample-explain { margin: 16px 0; padding: 14px; background: var(--bg-primary); border-radius: 12px; font-size: 0.9rem; line-height: 1.6; color: var(--text-secondary); white-space: pre-line; }
.home-sample-explain strong { color: var(--text-primary); }
.home-sample-end { text-align: center; padding: 10px 0 4px; }
.home-sample-end h4 { margin: 0 0 8px; font-size: 1.4rem; }
.home-sample-end p { margin: 0 0 18px; font-size: 0.95rem; line-height: 1.5; color: var(--text-secondary); }

/* ===== Larger screens ===== */
.home-top-actions { display: flex; align-items: center; gap: 10px; }
.home-signin-top { display: none; }
.home-perks { display: none; }

/* Tablets */
@media (min-width: 600px) and (max-width: 899px) {
  .home { max-width: 680px; padding-top: 28px; }
  .home-slide { min-height: 400px; padding: 56px 34px 30px; }
  .home-slide h2 { font-size: 2.2rem; }
  .home-slide p { font-size: 1.05rem; }
  .home-segs { left: 26px; right: 26px; }
  .home-faq-list { columns: 2; column-gap: 32px; }
  .home-faq-item { break-inside: avoid; }
}

/* Laptops and desktops: slideshow on the left, price and buttons on the right */
@media (min-width: 900px) {
  #login-screen {
    background:
      radial-gradient(1100px 520px at 12% -8%, color-mix(in srgb, var(--tab-active-bg) 18%, transparent), transparent 70%),
      radial-gradient(900px 480px at 100% 0%, color-mix(in srgb, #8b5cf6 12%, transparent), transparent 70%);
  }
  .home {
    max-width: 1180px; padding: 28px 44px 80px;
    display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    column-gap: 44px; align-items: stretch;
  }
  .home-top { grid-column: 1 / -1; margin-bottom: 40px; }
  .home-brand { font-size: 1.2rem; gap: 12px; }
  .home-brand img { width: 46px; height: 46px; }
  .home-theme { width: 42px; height: 42px; }
  .home-signin-top {
    display: inline-flex; align-items: center; padding: 10px 20px; border-radius: 999px;
    border: 1px solid var(--dash-border); background: var(--bg-secondary); color: var(--text-primary);
    font-family: inherit; font-size: 0.9rem; font-weight: 700; cursor: pointer;
  }
  .home-signin-top:hover { border-color: var(--tab-active-bg); color: var(--tab-active-bg); }

  /* Slideshow, bigger */
  .home-hero { grid-column: 1; display: flex; flex-direction: column; border-radius: 30px; box-shadow: 0 28px 60px rgba(0, 0, 0, 0.2); }
  .home-slides { flex: 1; }
  .home-segs { top: 18px; left: 34px; right: 34px; }
  .home-slide { min-height: 540px; padding: 72px 48px 46px; }
  .home-slide::before { width: 340px; height: 340px; right: -110px; top: -130px; }
  .home-slide::after { width: 240px; height: 240px; left: -90px; bottom: -110px; }
  .home-eyebrow { font-size: 0.76rem; padding: 6px 13px; margin-bottom: 16px; }
  .home-slide h2 { font-size: clamp(2.2rem, 3.4vw, 3rem); margin-bottom: 12px; }
  .home-slide p { font-size: 1.15rem; max-width: 40ch; margin-bottom: 20px; }
  .home-chips { gap: 9px; }
  .home-chips span { font-size: 0.9rem; padding: 8px 15px; }
  .home-demo { padding: 20px 22px; max-width: 560px; border-radius: 18px; }
  .home-demo-q { font-size: 1rem; margin-bottom: 12px; }
  .home-demo-opt { font-size: 0.98rem; padding: 11px 15px; border-radius: 11px; }
  .home-demo-why { font-size: 0.92rem; margin-top: 12px; }
  .home-quiz-top { font-size: 0.98rem; margin-bottom: 14px; }
  .home-timer { padding: 6px 14px; }
  .home-bar { height: 10px; }
  .home-row { font-size: 0.95rem; margin: 12px 0; }
  .home-avatars span { width: 48px; height: 48px; margin-left: -13px; }
  .home-avatars .home-avatar-more { font-size: 0.82rem; }
  .home-people-note { font-size: 1rem; }
  .home-phone { width: 104px; padding: 16px 10px 12px; border-radius: 22px; }
  .home-phone img { width: 56px; height: 56px; margin-bottom: 8px; border-radius: 14px; }
  .home-phone small { font-size: 0.72rem; }
  .home-phone-steps { font-size: 1rem; }

  /* Price card */
  .home-cta {
    grid-column: 2; display: flex; flex-direction: column; justify-content: center;
    padding: 38px 32px; background: var(--bg-secondary); border: 1px solid var(--dash-border);
    border-radius: 28px; box-shadow: 0 24px 60px rgba(0, 0, 0, 0.08);
  }
  .home-price { justify-content: flex-start; margin: 0 0 18px; }
  .home-price-amount { font-size: 3rem; line-height: 1; }
  .home-price-note { font-size: 0.95rem; }
  .home-perks { display: block; list-style: none; margin: 0 0 26px; padding: 0; }
  .home-perks li { position: relative; padding: 7px 0 7px 30px; font-size: 0.98rem; color: var(--text-primary); }
  .home-perks li::before {
    content: "✓"; position: absolute; left: 0; top: 7px; width: 21px; height: 21px; border-radius: 50%;
    background: color-mix(in srgb, var(--dash-success) 18%, transparent); color: var(--dash-success);
    font-size: 0.75rem; font-weight: 800; display: flex; align-items: center; justify-content: center;
  }
  .home-btn { padding: 17px 20px; font-size: 1.05rem; }
  .home-btn--primary:hover { filter: brightness(1.07); transform: translateY(-1px); }
  .home-btn--google:hover { border-color: var(--tab-active-bg); }
  .home-btn { transition: transform 0.15s ease, filter 0.15s ease, border-color 0.15s ease; }
  .home-cta .home-access { background: var(--bg-primary); border: none; }
  .home-paid-hint { display: none; }

  /* FAQ across the full width, in two columns */
  .home-faq { grid-column: 1 / -1; margin-top: 72px; }
  .home-faq h3 { font-size: 1.6rem; margin-bottom: 20px; }
  .home-faq-list { columns: 2; column-gap: 56px; }
  .home-faq-item { break-inside: avoid; }
  .home-faq-item summary { font-size: 1.02rem; padding: 18px 30px 18px 2px; }
  .home-faq-item p { font-size: 0.96rem; }
}
@media (min-width: 1400px) { .home { max-width: 1280px; } }
/* ---------- Bell panel ---------- */
.bell-backdrop {
  position: fixed; inset: 0; z-index: 1100;
  background: rgba(8, 10, 20, 0.45);
  opacity: 0; visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}
.bell-backdrop.is-open { opacity: 1; visibility: visible; }

.bell-panel {
  position: fixed; z-index: 1101;
  top: 64px; right: 24px;
  width: 380px; max-height: min(70vh, 560px);
  background: var(--bg-secondary);
  border: 1px solid var(--dash-border);
  border-radius: 16px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.3);
  display: flex; flex-direction: column;
  opacity: 0; visibility: hidden; transform: translateY(-8px);
  transition: opacity 0.2s ease, transform 0.22s ease, visibility 0.22s ease;
}
.bell-panel.is-open { opacity: 1; visibility: visible; transform: none; }

/* On phones the panel slides up from the bottom */
@media (max-width: 720px) {
  .bell-panel {
    top: auto; right: 0; left: 0; bottom: 0;
    width: auto; max-height: 82vh;
    border-radius: 20px 20px 0 0;
    border-bottom: none;
    transform: translateY(100%);
    padding-bottom: env(safe-area-inset-bottom, 0px);
  }
}

.bell-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 14px 0; border-bottom: 1px solid var(--dash-border);
}
.bell-tabs { display: flex; gap: 4px; }
.bell-tab {
  background: none; border: none; cursor: pointer;
  padding: 10px 12px; font-size: 0.9rem; font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 3px solid transparent; margin-bottom: -1px;
}
.bell-tab.is-active { color: var(--tab-active-bg); border-bottom-color: var(--tab-active-bg); }
.bell-close {
  width: 32px; height: 32px; border-radius: 50%;
  border: none; background: var(--bg-primary); color: var(--text-secondary);
  font-size: 1.1rem; line-height: 1; cursor: pointer; margin-bottom: 8px;
}
.bell-body { padding: 14px 16px 18px; overflow-y: auto; }
.bell-body[hidden] { display: none; }

/* Pinned "add to home screen" tip */
.bell-guide {
  background: var(--bg-primary);
  border: 1px solid var(--dash-border);
  border-radius: 12px; padding: 12px 14px; margin-bottom: 14px;
  font-size: 0.85rem; color: var(--text-primary);
}
.bell-guide[hidden] { display: none; }
.bell-guide summary { cursor: pointer; font-weight: 600; font-size: 0.9rem; }
.bell-guide p { margin: 8px 0 0; color: var(--text-secondary); }
.bell-guide ul { margin: 8px 0 0; padding-left: 18px; color: var(--text-secondary); }
.bell-guide li { margin-bottom: 4px; }
.bell-guide .bell-guide-note { font-size: 0.8rem; font-style: italic; }
.bell-link {
  background: none; border: none; padding: 0; margin-top: 10px;
  color: var(--text-secondary); font-size: 0.78rem; cursor: pointer; text-decoration: underline;
}

.bell-update { padding: 12px 0; border-bottom: 1px solid var(--dash-border); }
.bell-update:last-child { border-bottom: none; }
.bell-update h4 { margin: 0 0 4px; font-size: 0.95rem; color: var(--text-primary); }
.bell-update p { margin: 0; font-size: 0.85rem; line-height: 1.5; color: var(--text-secondary); white-space: pre-line; }
.bell-update time { display: block; margin-top: 6px; font-size: 0.75rem; color: var(--text-secondary); opacity: 0.8; }
.bell-empty { margin: 4px 0; font-size: 0.85rem; color: var(--text-secondary); }

/* Feedback form */
.bell-label { display: block; margin: 12px 0 6px; font-size: 0.82rem; font-weight: 600; color: var(--text-primary); }
.bell-label:first-child { margin-top: 0; }
.bell-optional { font-weight: 400; color: var(--text-secondary); }
.bell-field {
  width: 100%; padding: 11px 12px;
  background: var(--bg-primary); color: var(--text-primary);
  border: 1px solid var(--dash-border); border-radius: 10px;
  font-size: 0.9rem; font-family: inherit;
}
.bell-field:focus { outline: none; border-color: var(--tab-active-bg); }
textarea.bell-field { resize: vertical; min-height: 96px; }
.bell-msg { min-height: 1.2em; margin: 10px 0 0; font-size: 0.82rem; }
.bell-msg.is-ok { color: var(--dash-success); }
.bell-msg.is-error { color: var(--dash-danger); }
.bell-send {
  width: 100%; margin-top: 10px; padding: 12px;
  background: var(--tab-active-bg); color: #fff; border: none; border-radius: 10px;
  font-size: 0.95rem; font-weight: 600; cursor: pointer;
}
.bell-send:disabled { opacity: 0.6; cursor: not-allowed; }