/* ═══════════════════════════════════════════════════════════════════
   AURALIS · ScienceInfo — fullscreen overlay с 7 секции
   Mobile-first 375px, glass primitive + champagne accents.
   ═══════════════════════════════════════════════════════════════════ */

/* ─── Overlay backdrop ─── */

.sci-overlay {
  position: fixed;
  inset: 0;
  z-index: 320;
  display: none;
  background: rgba(3, 7, 18, 0.55);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  opacity: 0;
  transition: opacity 0.2s ease;
}
.sci-overlay.open {
  display: block;
  opacity: 1;
}

/* ─── Main sheet (fullscreen modal) ─── */

.sci-sheet {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  background: var(--bg, #fff);
  color: var(--text);
  animation: sciSlideUp 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
}

[data-theme="dark"] .sci-sheet {
  background: var(--surface, hsl(220 25% 8%));
}

@keyframes sciSlideUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── Sticky header ─── */

.sci-header {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px 12px;
  border-bottom: 1px solid var(--border-color, rgba(0,0,0,0.08));
  background: var(--bg, #fff);
  z-index: 2;
}
[data-theme="dark"] .sci-header {
  background: var(--surface, hsl(220 25% 8%));
}

.sci-header-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  border-radius: 50%;
  background: linear-gradient(135deg,
    hsl(var(--hue1, 200) 60% 55% / 0.18),
    hsl(var(--hue3, 280) 60% 55% / 0.18));
  color: hsl(var(--hue1, 200) 60% 50%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.sci-header-icon svg { width: 20px; height: 20px; }

.sci-header-text {
  flex: 1;
  min-width: 0;
}

.sci-title {
  margin: 0;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.005em;
  line-height: 1.2;
  color: var(--text);
}
.sci-subtitle {
  margin-top: 2px;
  font-size: 12px;
  color: var(--text-faint, var(--text));
  font-weight: 500;
}

.sci-close {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border: none;
  background: transparent;
  color: var(--text-soft, var(--text));
  cursor: pointer;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.sci-close svg { width: 20px; height: 20px; }
.sci-close:active { background: rgba(0,0,0,0.06); }
[data-theme="dark"] .sci-close:active { background: rgba(255,255,255,0.06); }

/* ─── Sticky pill nav ─── */

.sci-pills {
  flex-shrink: 0;
  display: flex;
  gap: 8px;
  padding: 10px 16px;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
  border-bottom: 1px solid var(--border-color, rgba(0,0,0,0.08));
  background: var(--bg, #fff);
}
[data-theme="dark"] .sci-pills {
  background: var(--surface, hsl(220 25% 8%));
}
.sci-pills::-webkit-scrollbar { display: none; }

.sci-pill {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--border-color, rgba(0,0,0,0.12));
  background: var(--surface-soft, rgba(0,0,0,0.03));
  color: var(--text-soft, var(--text));
  font-family: inherit;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.01em;
  cursor: pointer;
  white-space: nowrap;
  transition: background 150ms ease, color 150ms ease,
              border-color 150ms ease, transform 120ms ease;
}
[data-theme="dark"] .sci-pill {
  background: rgba(255,255,255,0.04);
}
.sci-pill:active { transform: scale(0.96); }

.sci-pill-num {
  font-family: var(--font-mono, monospace);
  font-size: 11px;
  font-weight: 800;
  opacity: 0.75;
}

.sci-pill.is-active {
  background: linear-gradient(135deg,
    hsl(var(--hue1, 200) 70% 50%),
    hsl(var(--hue3, 280) 60% 50%));
  border-color: transparent;
  color: white;
}
.sci-pill.is-active .sci-pill-num { opacity: 0.9; }

/* ─── Scrollable body ─── */

.sci-body {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  padding: 4px 16px 48px;
  scroll-behavior: smooth;
}

/* ─── Section ─── */

.sci-section {
  padding: 20px 0;
  border-bottom: 1px dashed var(--border-color, rgba(0,0,0,0.1));
}
.sci-section:last-child { border-bottom: none; }

.sci-section-head {
  margin-bottom: 14px;
}

.sci-section-num {
  font-family: var(--font-mono, monospace);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: hsl(var(--hue1, 200) 60% 50%);
  margin-bottom: 4px;
}
[data-theme="dark"] .sci-section-num {
  color: hsl(var(--hue3, 280) 60% 70%);
}

.sci-section-title {
  margin: 0;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.2;
  color: var(--text);
}

.sci-section-subtitle {
  margin-top: 4px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-faint, var(--text));
  line-height: 1.4;
}

/* ─── Prose styling ─── */

.sci-prose {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--text);
}
.sci-prose:last-child { margin-bottom: 0; }

.sci-h3 {
  margin: 18px 0 10px;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: -0.005em;
  color: var(--text);
}

.sci-steps,
.sci-list {
  margin: 0 0 14px;
  padding-left: 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.sci-steps li,
.sci-list li {
  font-size: 15px;
  line-height: 1.55;
  color: var(--text);
}
.sci-steps { list-style: decimal; }
.sci-list  { list-style: disc; }

.sci-note {
  padding: 12px 14px;
  margin: 10px 0 14px;
  border-radius: 10px;
  background: hsl(45 60% 92%);
  color: hsl(45 40% 22%);
  font-size: 14px;
  line-height: 1.5;
  border-left: 3px solid hsl(45 70% 50%);
}
[data-theme="dark"] .sci-note {
  background: hsl(45 30% 14% / 0.5);
  color: hsl(45 60% 80%);
  border-left-color: hsl(45 70% 55%);
}

/* ─── Stat cards (Section §1) ─── */

.sci-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-bottom: 18px;
}
@media (min-width: 440px) {
  .sci-stats { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 640px) {
  .sci-stats { grid-template-columns: 1fr 1fr 1fr; }
}

.sci-stat-card {
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--border-color, rgba(0,0,0,0.1));
  background: var(--surface-soft, rgba(0,0,0,0.02));
}
[data-theme="dark"] .sci-stat-card {
  background: rgba(255,255,255,0.03);
}

.sci-stat-card--accent {
  background: linear-gradient(135deg,
    hsl(var(--hue1, 200) 60% 55% / 0.10),
    hsl(var(--hue3, 280) 60% 55% / 0.10));
  border-color: hsl(var(--hue1, 200) 60% 55% / 0.35);
}
[data-theme="dark"] .sci-stat-card--accent {
  background: linear-gradient(135deg,
    hsl(var(--hue1, 200) 40% 20% / 0.5),
    hsl(var(--hue3, 280) 40% 20% / 0.5));
  border-color: hsl(var(--hue1, 200) 50% 50% / 0.4);
}

.sci-stat-val {
  font-family: var(--font-mono, monospace);
  font-size: 22px;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: hsl(var(--hue1, 200) 60% 45%);
  margin-bottom: 4px;
}
[data-theme="dark"] .sci-stat-val {
  color: hsl(var(--hue3, 280) 70% 75%);
}
.sci-stat-label {
  font-size: 12px;
  line-height: 1.4;
  color: var(--text-soft, var(--text));
  font-weight: 500;
}

/* ─── CTA button (anchor link) ─── */

.sci-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  padding: 12px 20px;
  border-radius: 999px;
  border: 1px solid var(--border-color, rgba(0,0,0,0.12));
  background: var(--surface-soft, rgba(0,0,0,0.03));
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  min-height: 44px;
}
[data-theme="dark"] .sci-cta {
  background: rgba(255,255,255,0.04);
}
.sci-cta:active { transform: scale(0.98); }
.sci-cta-icon { display: inline-flex; }
.sci-cta-icon svg { width: 16px; height: 16px; }

/* ─── Source cards (Section §7) ─── */

.sci-sources {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sci-source-card {
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid var(--border-color, rgba(0,0,0,0.1));
  background: var(--surface-soft, rgba(0,0,0,0.02));
}
[data-theme="dark"] .sci-source-card {
  background: rgba(255,255,255,0.03);
}

.sci-source-authors {
  font-family: var(--font-mono, monospace);
  font-size: 12px;
  font-weight: 700;
  color: hsl(var(--hue1, 200) 60% 45%);
  margin-bottom: 6px;
  letter-spacing: 0.01em;
}
[data-theme="dark"] .sci-source-authors {
  color: hsl(var(--hue3, 280) 60% 70%);
}

.sci-source-title {
  font-size: 14px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text);
  margin-bottom: 4px;
}

.sci-source-journal {
  font-size: 12px;
  color: var(--text-faint, var(--text));
  font-style: italic;
  margin-bottom: 8px;
}

.sci-source-contrib {
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-soft, var(--text));
  margin-bottom: 6px;
}

.sci-source-id {
  font-family: var(--font-mono, monospace);
  font-size: 11px;
  font-weight: 600;
  color: var(--text-faint, var(--text));
  letter-spacing: 0.02em;
}