/* apps/student/static/student/layout.css
   Page-specific layout + extracted template <style> blocks (P4.2).
   Shared/deduped component classes live in components.css; the curriculum
   tree family (.s-branch/.s-tier/.s-unit-card) also lives there.
   This file holds the remaining page-unique rules, organized by page. */

/* ── My Courses ──────────────────────────────────────────── */
.s-course-panels { display: flex; flex-direction: column; gap: 12px; margin-bottom: 16px; }
.s-course-panel { border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; background: var(--surface-2); }
.s-course-panel-header { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 8px; }
.s-course-panel-title { font-family: var(--font-ui); font-size: 1.1rem; margin: 0; }
.s-course-panel-progress { font-size: 0.8rem; color: var(--text-muted); }
.s-course-next { display: flex; align-items: center; gap: 8px; padding: 10px 12px; background: var(--teal-pale); border-radius: var(--radius); text-decoration: none; color: var(--text); margin: 8px 0; }
.s-course-next-label { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--teal); font-weight: 600; }
.s-course-next-title { font-weight: 600; flex: 1; }
.s-course-panel-footer { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; padding-top: 8px; border-top: 1px solid var(--border); }
.s-course-panel-badge { font-size: 0.8rem; color: var(--text-muted); }

/* ── Gradebook ────────────────────────────────────────────── */
.s-gradebook-course-title { font-family: var(--font-ui); font-size: 1.05rem; margin: 20px 0 8px; }
.s-gradebook-course-title a { color: var(--teal); text-decoration: none; }

/* ── Course Detail ─────────────────────────────────────────── */
.s-worksheets { margin-bottom: 1.5rem; }
.s-worksheets h2 { font-size: 1.1rem; margin: 0 0 0.75rem; }
.s-worksheet-card {
  border: 1px solid var(--border, #dde3e6);
  border-radius: 10px;
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  background: var(--surface-2, #fff);
}
.s-worksheet-card h3 { margin: 0 0 0.25rem; font-size: 1rem; color: var(--text); }
.s-worksheet-due { float: right; font-weight: 400; color: var(--text-muted, #666); font-size: 0.85rem; }
.s-worksheet-progress { font-size: 0.85rem; color: var(--text-muted, #666); margin: 0.25rem 0 0.5rem; }
.s-worksheet-card ul { list-style: none; padding: 0; margin: 0; }
.s-worksheet-card li { display: flex; align-items: center; gap: 0.5rem; padding: 0.25rem 0; border-bottom: 1px solid var(--border, #dde3e6); }
.s-worksheet-card li:last-child { border-bottom: none; }
.s-worksheet-card .s-ws-play { text-decoration: none; }
.s-worksheet-card .s-ws-pct { margin-left: auto; font-size: 0.78rem; font-weight: 600; color: var(--teal); }

.s-cd-header {
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.s-cd-back {
  display: inline-block;
  font-size: 0.82rem;
  color: var(--teal);
  text-decoration: none;
  margin-bottom: 10px;
}
.s-cd-back:hover { text-decoration: underline; }
.s-cd-title-row {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}
.s-cd-title {
  font-family: var(--font-ui);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
  margin: 0;
}
.s-cd-teacher { font-size: 0.85rem; color: var(--text-muted); }
.s-cd-overall { display: flex; align-items: center; gap: 10px; margin-top: 10px; }
.s-cd-overall .s-progress-bar-track { flex: 1; }
.s-cd-overall-label { font-size: 0.78rem; color: var(--text-muted); white-space: nowrap; }

.s-cd-section {
  margin-bottom: 18px;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  background: var(--surface-2);
}
.s-cd-section-label {
  padding: 8px 14px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: 1px solid var(--border);
}
.s-cd-label-open { color: var(--teal); background: color-mix(in srgb, var(--teal) 6%, var(--surface-2)); }
.s-cd-label-upcoming { color: var(--text-muted); background: var(--surface); }
.s-cd-label-done { color: #10b981; background: color-mix(in srgb, #10b981 6%, var(--surface-2)); }

.s-cd-row { padding: 10px 14px; border-bottom: 1px solid var(--border); }
.s-cd-row:last-child { border-bottom: none; }
.s-cd-row-main { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.s-cd-row-name { font-size: 0.9rem; font-weight: 500; color: var(--text); flex: 1; min-width: 0; }
.s-cd-row-chips { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.s-cd-pct { font-size: 0.78rem; font-weight: 600; color: var(--teal); }
.s-cd-done-pct { color: #10b981; }
.s-cd-bar { margin-top: 6px; }
.s-cd-cta {
  display: inline-block;
  margin-top: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--teal);
  text-decoration: none;
}
.s-cd-cta:hover { text-decoration: underline; }
.s-cd-review { color: #10b981; }
.s-cd-row-upcoming { opacity: 0.6; }
.s-cd-row-done { opacity: 0.75; }
.s-cd-row-overdue .s-cd-row-name { color: var(--text); }
.s-cd-empty { color: var(--text-muted); font-size: 0.9rem; text-align: center; padding: 32px 0; }

/* ── Home ─────────────────────────────────────────────────── */
/* Join success banner */
.s-join-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  background: color-mix(in srgb, var(--teal, #1a8a9a) 12%, var(--surface-2, #f0f4f5));
  border: 1px solid color-mix(in srgb, var(--teal, #1a8a9a) 30%, transparent);
  border-radius: 0.5rem;
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  font-size: 0.95rem;
  color: var(--text-1, #1a1a1a);
}
.s-join-banner button {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.2rem;
  line-height: 1;
  color: var(--text-2, #555);
  padding: 0 0.25rem;
  flex-shrink: 0;
}
.s-join-banner button:hover { color: var(--text-1, #1a1a1a); }

/* Resume card — teal accent kept as-is (P4.3 reconciliation #6) */
.s-resume-card {
  background: linear-gradient(135deg, var(--teal) 0%, #1f6070 100%) !important;
  box-shadow: 0 4px 14px rgba(42, 126, 148, 0.25) !important;
  transition: all 250ms ease !important;
  border: 1px solid rgba(255,255,255,0.1);
}
.s-resume-card:hover {
  background: linear-gradient(135deg, #2f8ea7 0%, #1a5260 100%) !important;
  box-shadow: 0 6px 20px rgba(42, 126, 148, 0.35) !important;
  transform: translateY(-2px);
}

/* Teacher-pending banner */
.s-pending-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  background: color-mix(in srgb, var(--warning, #b8860b) 12%, var(--surface-2, #f0f4f5));
  border: 1px solid color-mix(in srgb, var(--warning, #b8860b) 30%, transparent);
  border-radius: 0.5rem;
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  font-size: 0.95rem;
  color: var(--text-1, #1a1a1a);
}
.s-pending-banner a { color: var(--warning, #b8860b); font-weight: 600; }

/* ── Unit Progress ─────────────────────────────────────────── */
.unit-header { margin-bottom: 1.5rem; }
.tier-badge { background: #e0e0e0; padding: 0.2rem 0.5rem; border-radius: 4px; font-size: 0.75rem; font-weight: bold; color: #555; margin-bottom: 0.5rem; display: inline-block; }
.unit-title { font-size: 1.5rem; font-weight: bold; margin: 0.25rem 0; }
.unit-desc { font-size: 0.95rem; color: #666; margin: 0; }

.segmented-mastery-bar { display: flex; gap: 4px; height: 12px; width: 100%; margin-bottom: 2rem; background: transparent; border-radius: 6px; overflow: visible; }
.bar-segment { flex: 1; height: 100%; border-radius: 2px; transition: opacity 0.2s; position: relative; outline: none; }
.bar-segment:hover { opacity: 0.8; }
.bar-segment:focus-visible { box-shadow: 0 0 0 2px rgba(29, 78, 216, 0.35); }
.bar-segment::after {
  content: attr(data-tooltip);
  position: absolute;
  left: 50%;
  bottom: calc(100% + 10px);
  transform: translateX(-50%);
  padding: 0.45rem 0.65rem;
  border-radius: 8px;
  background: rgba(15, 23, 42, 0.96);
  color: #fff;
  font-size: 0.75rem;
  line-height: 1.2;
  font-weight: 600;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.16s ease, visibility 0.16s ease;
  z-index: 20;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.18);
}
.bar-segment::before {
  content: "";
  position: absolute;
  left: 50%;
  bottom: calc(100% + 4px);
  transform: translateX(-50%);
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 6px solid rgba(15, 23, 42, 0.96);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.16s ease, visibility 0.16s ease;
  z-index: 20;
}
.bar-segment:hover::after,
.bar-segment:hover::before,
.bar-segment:focus-visible::after,
.bar-segment:focus-visible::before {
  opacity: 1;
  visibility: visible;
}

.challenges-section { margin-bottom: 2rem; }
.challenges-title { font-size: 1.2rem; font-weight: bold; margin-bottom: 1rem; color: #222; }
.challenges-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1rem; }
.challenge-card { border: 1px solid #e2e8f0; border-radius: 8px; padding: 1.25rem; background: #fff; display: flex; flex-direction: column; justify-content: space-between; transition: transform 0.2s, box-shadow 0.2s; }
.challenge-card:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.05); }
.challenge-card.locked { opacity: 0.6; background: #f8fafc; }
.challenge-card.mastered { border-color: #4CAF50; }
.challenge-name { font-size: 1.1rem; font-weight: 700; margin: 0 0 0.5rem 0; color: #1e293b; }
.challenge-status { margin: 0 0 0.75rem 0; }
.status-badge { font-size: 0.7rem; font-weight: bold; padding: 0.2rem 0.5rem; border-radius: 4px; text-transform: uppercase; }
.status-badge.mastered { background: #4CAF50; color: white; }
.status-badge.unlocked { background: #4A90D9; color: white; }
.status-badge.locked { background: #94a3b8; color: white; }
.challenge-help { font-size: 0.8rem; color: #64748b; margin: 0; }
.challenge-btn { display: inline-block; text-align: center; background: #4A90D9; color: white; text-decoration: none; padding: 0.6rem 1rem; border-radius: 6px; font-weight: 600; font-size: 0.9rem; transition: background 0.2s; margin-top: 1rem; }
.challenge-btn:hover { background: #357abd; }
.challenge-btn.retry { background: #fff; color: #4CAF50; border: 1px solid #4CAF50; }
.challenge-btn.retry:hover { background: #e8f5e9; }

/* Mastery colors for bar segments and badges */
.tier-mastered, .mastered { background-color: #4CAF50 !important; color: white !important; }
.tier-proficient, .proficient { background-color: #4A90D9 !important; color: white !important; }
.tier-familiar, .familiar { background-color: #FF9800 !important; color: white !important; }
.tier-attempted, .attempted { background-color: #FFD28A !important; color: #6b4e16 !important; }
.tier-not-started, .tier-not_started, .not_started, .not-started { background-color: #e0e0e0 !important; color: #666 !important; }

.skill-cards-container { display: flex; flex-direction: column; gap: 1.5rem; }
.skill-card { border: 1px solid #eee; border-radius: 8px; padding: 1.25rem; background: #fff; }
.skill-card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; border-bottom: 1px solid #f0f0f0; padding-bottom: 0.5rem; }
.skill-card-title { font-size: 1.1rem; font-weight: bold; margin: 0; color: #222; }
.skill-mastery-badge { font-size: 0.75rem; font-weight: bold; padding: 0.25rem 0.6rem; border-radius: 12px; text-transform: uppercase; letter-spacing: 0.05em; }

.skill-playlists { display: flex; flex-direction: column; gap: 0.5rem; }
.skill-empty-state { margin: 0; padding: 0.75rem 1rem; color: #888; font-size: 0.9rem; font-style: italic; }
.playlist-row { display: flex; justify-content: space-between; align-items: center; padding: 0.75rem 1rem; background: #fcfcfc; border: 1px solid #f0f0f0; border-left: 4px solid #e0e0e0; border-radius: 6px; text-decoration: none; color: #333; transition: background 0.2s, border-color 0.2s; }
.playlist-row:hover { background: #f5f9ff; border-color: #4A90D9; }
.playlist-row.band-not_started { border-left-color: #cbd5e1; }
.playlist-row.band-getting_started { border-left-color: #fbd38d; }
.playlist-row.band-learning { border-left-color: #f6ad55; }
.playlist-row.band-practicing { border-left-color: #63b3ed; }
.playlist-row.band-fluency_building { border-left-color: #4299e1; }
.playlist-row.band-polishing { border-left-color: #68d391; }
.playlist-row.band-completed { border-left-color: #48bb78; }

.playlist-info { display: flex; align-items: center; gap: 0.75rem; }
.playlist-name { font-size: 0.9rem; font-weight: 500; }
.mastery-badge { font-size: 0.7rem; font-weight: bold; padding: 0.15rem 0.4rem; border-radius: 4px; text-transform: uppercase; }
.practice-label { font-size: 0.7rem; font-weight: 600; background: #f1f5f9; color: #475569; padding: 0.15rem 0.4rem; border-radius: 4px; }
.playlist-progress-info { display: flex; align-items: center; gap: 0.75rem; font-size: 0.8rem; color: #666; }

.mini-progress-bar { background: #e0e0e0; width: 60px; height: 6px; border-radius: 3px; overflow: hidden; }
.mini-progress-fill { background: #4A90D9; height: 100%; border-radius: 3px; }
.playlist-count { font-weight: 600; color: #444; }
.playlist-score { color: #888; }
.coming-soon { font-size: 0.85rem; color: #888; font-style: italic; padding: 0.5rem 0; }
.reference-section { margin-top: 2rem; }
.reference-row { display: flex; justify-content: space-between; align-items: center; padding: 0.75rem 1rem; background: #f9fafb; border: 1px solid #e5e7eb; border-radius: 6px; margin-bottom: 0.5rem; text-decoration: none; color: #333; }
.reference-row:hover { background: #f0f4ff; }
.reference-title { font-weight: 600; color: #111827; font-size: 0.9rem; }
.reference-desc { font-size: 0.8rem; color: #6b7280; }
.reference-link { padding: 0.4rem 0.9rem; background: #fff; border: 1px solid #d1d5db; border-radius: 4px; font-size: 0.875rem; color: #374151; white-space: nowrap; }

@media (max-width: 600px) {
  /* .playlist-row is flex + justify-content:space-between with no wrap, so
     a long playlist name and the done/count/score cluster collide at
     narrow widths instead of stacking. */
  .skill-card { padding: 1rem; }
  .playlist-row { flex-wrap: wrap; row-gap: 0.4rem; }
  .playlist-info { flex: 1 1 100%; }
  .playlist-progress-info { flex: 1 1 100%; justify-content: flex-start; }
}