/* ============================================
   WAVLENTH — SUBJECTS PAGE STYLES
   Subjects-specific only. Shared app-shell
   lives in app-shell.css. Tokens live in
   global.css.
============================================ */

.subjects-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--text);
}

.subjects-subtitle {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--muted);
  margin-top: 4px;
}

.section-heading {
  color: var(--accent-subjects);
}

.subject-search {
  width: 100%;
  background: var(--card);
  border: 1px solid color-mix(in srgb, var(--accent-subjects) 30%, transparent);
  border-radius: 14px;
  padding: 14px 18px;
  font-family: var(--font-body);
  font-size: var(--fs-base);
  color: var(--text);
  transition:
    border-color var(--transition),
    box-shadow var(--transition);
}

.subject-search::placeholder {
  color: var(--muted);
}

.subject-search:focus {
  outline: none;
  border-color: var(--accent-subjects);
  box-shadow: 0 0 0 3px
    color-mix(in srgb, var(--accent-subjects) 15%, transparent);
}

/* ---------- Subject grid ---------- */
.subject-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.subject-card {
  --card-accent: var(--accent-subjects);
  background: var(--card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent-subjects);
  border-radius: 18px;
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  transition:
    transform var(--transition),
    border-color var(--transition),
    box-shadow var(--transition);
}

.subject-card:hover {
  transform: translateY(-5px);
  border-color: var(--card-accent);
  box-shadow: var(--shadow-card);
}

.subject-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: color-mix(in srgb, var(--accent-subjects) 12%, transparent);
  font-size: 1.5rem;
  margin-bottom: 4px;
}

.subject-name {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--text);
}

.subject-desc {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  line-height: 1.5;
  min-height: 32px;
}

.subject-bar {
  width: 100%;
  height: 4px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
  margin: var(--space-xs) 0;
}

.subject-bar-fill {
  height: 100%;
  background: var(--card-accent);
  border-radius: 4px;
}

.subject-continue {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--card-accent);
  border: 1px solid var(--card-accent);
  border-radius: 8px;
  padding: 8px 16px;
  margin-top: var(--space-xs);
  transition:
    background var(--transition),
    color var(--transition);
}

.subject-card:hover .subject-continue {
  background: var(--card-accent);
  color: #1a1a1a;
}

.subject-card.hidden {
  display: none;
}

.no-results {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--muted);
  text-align: center;
  padding: var(--space-xl) 0;
}

/* ---------- Recently opened ---------- */
.recent-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.recent-chip {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--chip-accent, var(--accent-subjects));
  border-radius: 12px;
  padding: 10px 16px;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--text);
  transition:
    transform var(--transition),
    border-color var(--transition);
}

.recent-chip:hover {
  transform: translateY(-2px);
  border-left-color: var(--chip-accent, var(--accent-subjects));
}

.recent-empty {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--muted);
}

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  .subject-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 800px) {
  .subject-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 500px) {
  .subject-grid {
    grid-template-columns: 1fr;
  }
}