/* ===== WELCOME STEP =====
   Its own file: welcome.css, linked in <head> right after style.css.
   Uses your existing colour variables, so dark mode works. */

.welcome-overlay {
  position: fixed; inset: 0; z-index: 2500;
  display: flex; align-items: center; justify-content: center; padding: 16px;
  background: rgba(8, 10, 20, 0.6);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  visibility: hidden; opacity: 0; transition: opacity 0.2s ease, visibility 0.2s ease;
}
.welcome-overlay.is-open { visibility: visible; opacity: 1; }
.welcome-card {
  width: 100%; max-width: 480px; max-height: 92vh; overflow-y: auto;
  background: var(--bg-secondary); color: var(--text-primary);
  border: 1px solid var(--dash-border); border-radius: 22px;
  padding: 26px 22px 20px; box-shadow: 0 24px 64px rgba(0, 0, 0, 0.35);
  transform: translateY(14px); transition: transform 0.25s ease;
}
.welcome-overlay.is-open .welcome-card { transform: none; }

.welcome-head { text-align: center; margin-bottom: 8px; }
.welcome-emoji { font-size: 2rem; margin-bottom: 6px; }
.welcome-head h2 { margin: 0 0 6px; font-size: 1.35rem; }
.welcome-head p { margin: 0; font-size: 0.9rem; line-height: 1.5; color: var(--text-secondary); }

.welcome-label { display: block; margin: 16px 0 7px; font-size: 0.9rem; font-weight: 700; color: var(--text-primary); }
.welcome-hint { font-weight: 400; font-size: 0.8rem; color: var(--text-secondary); margin-left: 4px; }
.welcome-input {
  width: 100%; box-sizing: border-box; padding: 12px 14px;
  border: 2px solid var(--dash-border); border-radius: 12px;
  background: var(--bg-primary); color: var(--text-primary);
  font-family: inherit; font-size: 0.95rem;
}
.welcome-input:focus { outline: none; border-color: var(--tab-active-bg); }
.welcome-input[hidden] { display: none; }
#welcome-source-other { margin-top: 8px; }

.welcome-subjects { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.welcome-subject {
  position: relative; display: flex; flex-direction: column; align-items: center; gap: 4px;
  padding: 10px 4px; border-radius: 12px; cursor: pointer;
  border: 2px solid var(--dash-border); background: var(--bg-primary); color: var(--text-primary);
  font-family: inherit; font-size: 0.78rem; font-weight: 600;
}
.welcome-subject span { font-size: 1.3rem; }
.welcome-subject.is-on {
  border-color: var(--tab-active-bg);
  background: color-mix(in srgb, var(--tab-active-bg) 12%, var(--bg-secondary));
}
.welcome-subject.is-on::after {
  content: "✓"; position: absolute; top: 4px; right: 6px;
  font-size: 0.7rem; font-weight: 800; color: var(--tab-active-bg);
}

.welcome-error { min-height: 1.2em; margin: 12px 0 0; font-size: 0.85rem; color: var(--dash-danger); }
.welcome-submit {
  width: 100%; margin-top: 8px; padding: 14px; border: none; border-radius: 12px;
  background: var(--tab-active-bg); color: #fff; font-family: inherit; font-size: 1rem; font-weight: 700; cursor: pointer;
}
.welcome-submit:disabled { opacity: 0.6; cursor: not-allowed; }
.welcome-later {
  display: block; margin: 10px auto 0; background: none; border: none; cursor: pointer;
  color: var(--text-secondary); font-family: inherit; font-size: 0.85rem;
}

@media (min-width: 600px) {
  .welcome-card { padding: 32px 30px 24px; }
  .welcome-subjects { gap: 10px; }
}