/* ═══════════════════════════════════════════════════════════════════
   AURALIS · CategoryInfoSheet (Task P4.2)
   ───────────────────────────────────────────────────────────────────
   Учебен bottom-sheet съдържание: 9 секции + Preview CTA.
   Mount-ва се вътре в BottomSheet (.bs-body) или във fallback overlay.
   ═══════════════════════════════════════════════════════════════════ */

.cis-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 4px 2px 12px;
  color: var(--text);
  font-family: inherit;
}

/* ═══ SECTION ═══ */
.cis-section {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}

.cis-section-title {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: -0.005em;
  color: var(--text);
  margin: 0;
  padding-bottom: 2px;
}

.cis-text {
  font-size: 14px;
  line-height: 1.55;
  color: var(--text);
  margin: 0;
}
.cis-text--reasoning {
  font-size: 13px;
  color: var(--text-muted);
  font-style: italic;
  margin-top: 6px;
}
.cis-muted {
  color: var(--text-muted);
}

/* ═══ CAUTION SECTION (Кога НЕ се ползва) ═══ */
.cis-section--caution {
  border-radius: var(--radius-sm);
  padding: 14px;
  border-left: 3px solid hsl(20 80% 55% / 0.6);
}
[data-theme="light"] .cis-section--caution,
:root:not([data-theme]) .cis-section--caution {
  background: hsl(20 80% 96%);
}
[data-theme="dark"] .cis-section--caution {
  background: hsl(20 30% 12% / 0.55);
}

/* ═══ SCIENCE SECTION (Научна основа) ═══ */
.cis-section--science {
  border-radius: var(--radius-sm);
  padding: 14px;
  border-left: 3px solid hsl(var(--hue1) 60% 55% / 0.55);
}
[data-theme="light"] .cis-section--science,
:root:not([data-theme]) .cis-section--science {
  background: hsl(var(--hue1) 50% 96%);
}
[data-theme="dark"] .cis-section--science {
  background: hsl(var(--hue1) 30% 12% / 0.55);
}

/* ═══ PAIR LIST (timeOfDay / context / duration) ═══ */
.cis-pair-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.cis-pair-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 10px;
  align-items: baseline;
  padding: 6px 0;
  border-bottom: 1px dashed var(--border-color);
}
.cis-pair-row:last-child { border-bottom: none; }
.cis-pair-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.cis-pair-value {
  font-size: 14px;
  line-height: 1.45;
  color: var(--text);
}

/* ═══ BULLETS ═══ */
.cis-bullets {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.cis-bullet {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text);
}
.cis-bullet::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--accent);
}
.cis-bullet--safety::before {
  background: hsl(140 55% 50%);
}

/* ═══ RECOMMENDED NOISE CARD ═══ */
.cis-noise-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}
[data-theme="light"] .cis-noise-card,
:root:not([data-theme]) .cis-noise-card {
  background: hsl(var(--hue3) 50% 96%);
  box-shadow: var(--shadow-card-sm);
}
[data-theme="dark"] .cis-noise-card {
  background: hsl(var(--hue3) 30% 12% / 0.5);
  backdrop-filter: blur(6px);
}
.cis-noise-type {
  font-size: 15px;
  font-weight: 800;
  color: hsl(var(--hue3) 65% 40%);
}
[data-theme="dark"] .cis-noise-type {
  color: hsl(var(--hue3) 70% 72%);
}
.cis-noise-id {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--text-faint);
  text-transform: lowercase;
}

/* ═══ MIX RATIO BARS ═══ */
.cis-ratio {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}
[data-theme="light"] .cis-ratio,
:root:not([data-theme]) .cis-ratio {
  background: var(--surface);
}
[data-theme="dark"] .cis-ratio {
  background: hsl(220 25% 8% / 0.5);
}
.cis-ratio-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-top: 4px;
}
.cis-ratio-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--text-muted);
  text-transform: uppercase;
}
.cis-ratio-value {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 800;
  color: var(--accent);
}
.cis-ratio-bar {
  height: 6px;
  border-radius: 999px;
  overflow: hidden;
  background: var(--border-color);
  margin-bottom: 4px;
}
.cis-ratio-fill-l1 {
  height: 100%;
  background: linear-gradient(90deg, hsl(var(--hue1) 60% 55%), hsl(var(--hue2) 60% 55%));
  border-radius: 999px;
  transition: width 0.4s var(--ease);
}
.cis-ratio-fill-l2 {
  height: 100%;
  background: linear-gradient(90deg, hsl(var(--hue3) 60% 55%), hsl(var(--hue3) 50% 65%));
  border-radius: 999px;
  transition: width 0.4s var(--ease);
}

/* ═══ FAQ (details/summary accordion) ═══ */
.cis-faq-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.cis-faq-item {
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  overflow: hidden;
}
[data-theme="light"] .cis-faq-item,
:root:not([data-theme]) .cis-faq-item {
  background: var(--surface);
}
[data-theme="dark"] .cis-faq-item {
  background: hsl(220 25% 8% / 0.5);
}
.cis-faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  user-select: none;
}
.cis-faq-q::-webkit-details-marker { display: none; }
.cis-faq-q-text { flex: 1; }
.cis-faq-chev {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  display: grid;
  place-items: center;
  color: var(--text-muted);
  transition: transform 0.25s var(--ease);
}
.cis-faq-chev svg { width: 18px; height: 18px; }
.cis-faq-item[open] .cis-faq-chev { transform: rotate(180deg); }
.cis-faq-a {
  padding: 0 14px 14px;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--text-muted);
}

/* ═══ CITATIONS (Научна основа) ═══ */
.cis-citations {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  counter-reset: cit;
}
.cis-citation {
  position: relative;
  padding-left: 26px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--text-muted);
  counter-increment: cit;
}
.cis-citation::before {
  content: "[" counter(cit) "]";
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: hsl(var(--hue1) 60% 55%);
}

/* ═══ PREVIEW CTA ═══ */
.cis-preview-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  min-height: 52px;
  padding: 14px 20px;
  margin-top: 8px;
  border: none;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, hsl(var(--hue1) 65% 55%), hsl(var(--hue2) 65% 55%));
  color: white;
  font-family: inherit;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: -0.005em;
  cursor: pointer;
  box-shadow: 0 6px 18px hsl(var(--hue1) 60% 50% / 0.35);
  transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur) var(--ease);
}
.cis-preview-cta:hover {
  box-shadow: 0 8px 22px hsl(var(--hue1) 60% 50% / 0.45);
}
.cis-preview-cta:active { transform: scale(0.98); }
.cis-preview-cta:focus { outline: none; }
.cis-preview-cta:focus-visible {
  outline: 2px solid hsl(var(--hue3) 70% 55%);
  outline-offset: 3px;
}
.cis-preview-icon {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  color: white;
}
.cis-preview-icon svg { width: 16px; height: 16px; }
.cis-preview-text { white-space: nowrap; }

/* ═══════════════════════════════════════════════════════════════════
   FALLBACK OVERLAY (ако BottomSheet не е зареден)
   ═══════════════════════════════════════════════════════════════════ */

.cis-fallback-overlay {
  position: fixed;
  inset: 0;
  z-index: 9000;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  background: rgba(8, 9, 13, 0.55);
  backdrop-filter: blur(2px);
  animation: cisOverlayIn 0.25s var(--ease);
}
[data-theme="light"] .cis-fallback-overlay,
:root:not([data-theme]) .cis-fallback-overlay {
  background: rgba(60, 70, 100, 0.35);
}

.cis-fallback-sheet {
  width: 100%;
  max-width: 480px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  border-top-left-radius: var(--radius);
  border-top-right-radius: var(--radius);
  overflow: hidden;
  padding-bottom: env(safe-area-inset-bottom, 0);
  animation: cisSheetIn 0.32s var(--ease-spring);
}
[data-theme="light"] .cis-fallback-sheet,
:root:not([data-theme]) .cis-fallback-sheet {
  background: var(--bg-main);
  box-shadow: 0 -16px 40px rgba(60, 70, 100, 0.35);
}
[data-theme="dark"] .cis-fallback-sheet {
  background: linear-gradient(180deg, hsl(220 25% 7%) 0%, hsl(220 25% 5%) 100%);
  border-top: 1px solid var(--border-color);
}

.cis-fallback-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px 10px;
  border-bottom: 1px solid var(--border-color);
}
.cis-fallback-title {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.005em;
  color: var(--text);
  margin: 0;
  flex: 1;
}
.cis-fallback-close {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-icon);
  border: 1px solid var(--border-color);
  background: transparent;
  color: var(--text-muted);
  font-size: 20px;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  display: grid;
  place-items: center;
  font-family: inherit;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.cis-fallback-close:hover {
  background: var(--surface);
  color: var(--text);
}
.cis-fallback-close:active { transform: scale(0.94); }
.cis-fallback-close:focus { outline: none; }
.cis-fallback-close:focus-visible {
  outline: 2px solid hsl(var(--hue3) 70% 55%);
  outline-offset: 2px;
}

.cis-fallback-body {
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 16px;
}

body.cis-locked {
  overflow: hidden;
}

@keyframes cisOverlayIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes cisSheetIn {
  from { transform: translateY(100%); }
  to   { transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .cis-fallback-overlay,
  .cis-fallback-sheet { animation: none; }
  .cis-ratio-fill-l1,
  .cis-ratio-fill-l2 { transition: none; }
  .cis-faq-chev { transition: none; }
}