/* ==========================================================================
   SeroVerse Unified Zensical Theme — Canonical Stylesheet
   Source of truth: seroverse.github.io/docs/stylesheets/extra.css
   Propagated to:   ../SeroGen, ../KBank, ../SeroEpi via scripts/sync_theme.py
   ========================================================================== */

:root {
  /* Default / SeroVerse Home Full-Spectrum Palette */
  --sv-gradient: linear-gradient(135deg, #06b6d4 0%, #2563eb 52%, #7c3aed 100%);
  --sv-glow: rgba(14, 165, 233, 0.16);
  --sv-border: rgba(14, 165, 233, 0.26);
  --sv-surface-tint: linear-gradient(145deg, rgba(6, 182, 212, 0.10), rgba(59, 130, 246, 0.06));
  --sv-accent: #0284c7;
  --sv-accent-soft: rgba(14, 165, 233, 0.12);

  /* Per-pillar palette tokens (for cards and pillar-specific overrides) */
  --sv-serogen-gradient: linear-gradient(135deg, #0d9488 0%, #0284c7 55%, #6366f1 100%);
  --sv-serogen-glow: rgba(14, 165, 233, 0.16);
  --sv-serogen-border: rgba(13, 148, 136, 0.32);
  --sv-serogen-accent: #0d9488;

  --sv-kbank-gradient: linear-gradient(135deg, #059669 0%, #10b981 52%, #d97706 100%);
  --sv-kbank-glow: rgba(16, 185, 129, 0.16);
  --sv-kbank-border: rgba(16, 185, 129, 0.32);
  --sv-kbank-accent: #10b981;

  --sv-seroepi-gradient: linear-gradient(135deg, #7c3aed 0%, #6366f1 52%, #db2777 100%);
  --sv-seroepi-glow: rgba(139, 92, 246, 0.16);
  --sv-seroepi-border: rgba(139, 92, 246, 0.32);
  --sv-seroepi-accent: #8b5cf6;

  /* Backward-compatible aliases for SeroGen */
  --serogen-gradient: var(--sv-gradient);
  --serogen-glow: var(--sv-glow);
}

/* Pillar-specific root overrides */
:root[data-sv-pillar="serogen"] {
  --sv-gradient: var(--sv-serogen-gradient);
  --sv-glow: var(--sv-serogen-glow);
  --sv-border: var(--sv-serogen-border);
  --sv-surface-tint: linear-gradient(145deg, rgba(13, 148, 136, 0.10), rgba(2, 132, 199, 0.06));
  --sv-accent: var(--sv-serogen-accent);
  --sv-accent-soft: rgba(13, 148, 136, 0.12);
}

:root[data-sv-pillar="kbank"] {
  --sv-gradient: var(--sv-kbank-gradient);
  --sv-glow: var(--sv-kbank-glow);
  --sv-border: var(--sv-kbank-border);
  --sv-surface-tint: linear-gradient(145deg, rgba(16, 185, 129, 0.10), rgba(217, 119, 6, 0.06));
  --sv-accent: var(--sv-kbank-accent);
  --sv-accent-soft: rgba(16, 185, 129, 0.12);
}

:root[data-sv-pillar="seroepi"] {
  --sv-gradient: var(--sv-seroepi-gradient);
  --sv-glow: var(--sv-seroepi-glow);
  --sv-border: var(--sv-seroepi-border);
  --sv-surface-tint: linear-gradient(145deg, rgba(124, 58, 237, 0.10), rgba(219, 39, 119, 0.06));
  --sv-accent: var(--sv-seroepi-accent);
  --sv-accent-soft: rgba(139, 92, 246, 0.12);
}

[data-md-color-scheme="slate"] {
  --md-default-bg-color: #0b1120;
  --md-default-bg-color--light: #111827;
  --md-code-bg-color: #0f172a;
  --sv-glow: rgba(56, 189, 248, 0.18);
}

:root[data-sv-pillar="kbank"] [data-md-color-scheme="slate"],
[data-sv-pillar="kbank"][data-md-color-scheme="slate"] {
  --sv-glow: rgba(52, 211, 153, 0.18);
}

:root[data-sv-pillar="seroepi"] [data-md-color-scheme="slate"],
[data-sv-pillar="seroepi"][data-md-color-scheme="slate"] {
  --sv-glow: rgba(167, 139, 250, 0.18);
}

/* ==========================================================================
   1. Inline Header Ecosystem Switcher Links (.sv-eco-links)
   ========================================================================== */

.sv-eco-links {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  gap: 0.25rem;
  margin-right: 0.5rem;
  font-size: 0.74rem;
  line-height: 1.2;
}

@media (max-width: 720px) {
  .sv-eco-links {
    display: none;
  }
}

.sv-eco-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.32rem;
  padding: 0.26rem 0.6rem;
  border-radius: 999px;
  color: currentColor !important;
  opacity: 0.78;
  text-decoration: none !important;
  font-weight: 600;
  border: 1px solid transparent;
  transition: opacity 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
}

.sv-eco-pill svg {
  width: 0.85rem;
  height: 0.85rem;
  flex-shrink: 0;
  fill: none;
  stroke: currentColor;
}

.sv-eco-pill:hover {
  opacity: 1;
  background: rgba(148, 163, 184, 0.14);
}

.sv-eco-pill--seroverse.is-active {
  opacity: 1;
  color: #38bdf8 !important;
  background: rgba(56, 189, 248, 0.14);
  border-color: rgba(56, 189, 248, 0.35);
}

.sv-eco-pill--serogen.is-active {
  opacity: 1;
  color: #2dd4bf !important;
  background: rgba(20, 184, 166, 0.14);
  border-color: rgba(20, 184, 166, 0.38);
}

.sv-eco-pill--kbank.is-active {
  opacity: 1;
  color: #34d399 !important;
  background: rgba(16, 185, 129, 0.14);
  border-color: rgba(16, 185, 129, 0.38);
}

.sv-eco-pill--seroepi.is-active {
  opacity: 1;
  color: #c084fc !important;
  background: rgba(168, 85, 247, 0.14);
  border-color: rgba(168, 85, 247, 0.38);
}

/* ==========================================================================
   2. Hero Banner (.sv-hero & .serogen-hero)
   ========================================================================== */

.sv-hero,
.serogen-hero {
  position: relative;
  padding: 2.5rem 2.3rem;
  margin-bottom: 2.2rem;
  border-radius: 1rem;
  background:
    radial-gradient(circle at 85% 15%, var(--sv-glow), transparent 55%),
    var(--sv-surface-tint);
  border: 1px solid var(--sv-border);
  backdrop-filter: blur(10px);
  container-type: inline-size;
}

.sv-hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  padding: 0.28rem 0.72rem;
  margin-bottom: 0.85rem;
  border-radius: 999px;
  background: var(--sv-accent-soft);
  color: var(--sv-accent);
  border: 1px solid var(--sv-border);
}

[data-md-color-scheme="slate"] .sv-hero-eyebrow {
  color: #38bdf8;
}

:root[data-sv-pillar="kbank"] [data-md-color-scheme="slate"] .sv-hero-eyebrow,
[data-sv-pillar="kbank"][data-md-color-scheme="slate"] .sv-hero-eyebrow {
  color: #34d399;
}

:root[data-sv-pillar="seroepi"] [data-md-color-scheme="slate"] .sv-hero-eyebrow,
[data-sv-pillar="seroepi"][data-md-color-scheme="slate"] .sv-hero-eyebrow {
  color: #c084fc;
}

.sv-hero h1,
.serogen-hero h1 {
  margin: 0 0 0.65rem 0 !important;
  font-weight: 800;
  letter-spacing: -0.025em;
  background: var(--sv-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.sv-hero p,
.serogen-hero p {
  font-size: 1.05rem;
  line-height: 1.65;
  margin-bottom: 1.2rem;
  opacity: 0.92;
}

.sv-badges,
.serogen-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.85rem;
}

.sv-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.25rem;
}

.sv-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 1.1rem;
  border-radius: 0.6rem;
  font-size: 0.86rem;
  font-weight: 600;
  text-decoration: none !important;
  transition: transform 0.16s ease, box-shadow 0.16s ease, opacity 0.16s ease, border-color 0.16s ease;
}

.sv-btn--primary {
  color: #ffffff !important;
  background: var(--sv-gradient);
  box-shadow: 0 6px 18px -5px var(--sv-glow);
}

.sv-btn--primary:hover {
  transform: translateY(-1px);
  opacity: 0.95;
}

.sv-btn--secondary {
  color: var(--md-default-fg-color) !important;
  background: rgba(148, 163, 184, 0.10);
  border: 1px solid var(--sv-border);
}

.sv-btn--secondary:hover {
  transform: translateY(-1px);
  border-color: var(--sv-accent);
  background: var(--sv-accent-soft);
}

/* Hero Metrics Strip (Size-Aware Container Query + Media Query Fallback) */
.sv-stat-strip {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(148, 163, 184, 0.18);
}

@media (min-width: 640px) {
  .sv-stat-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .sv-stat-strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@supports (container-type: inline-size) {
  @container (min-width: 520px) {
    .sv-stat-strip {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }
  }
  @container (min-width: 820px) {
    .sv-stat-strip {
      grid-template-columns: repeat(4, minmax(0, 1fr));
    }
  }
}

.sv-stat-item {
  padding: 0.65rem 0.85rem;
  border-radius: 0.65rem;
  background: rgba(15, 23, 42, 0.04);
  border: 1px solid rgba(148, 163, 184, 0.16);
}

[data-md-color-scheme="slate"] .sv-stat-item {
  background: rgba(15, 23, 42, 0.55);
}

.sv-stat-value {
  display: block;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--sv-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.sv-stat-label {
  display: block;
  font-size: 0.76rem;
  opacity: 0.82;
  margin-top: 0.15rem;
}

/* ==========================================================================
   3. Three-Pillar Showcase Grid & Cards (.sv-pillar-grid / .sv-pillar-card)
   ========================================================================== */

.sv-pillar-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.15rem;
  margin: 1.4rem 0 2rem 0;
}

@media (min-width: 900px) {
  .sv-pillar-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.sv-pillar-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 1.4rem 1.35rem;
  border-radius: 0.9rem;
  border: 1px solid rgba(148, 163, 184, 0.22);
  background: var(--md-default-bg-color--light);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
  overflow: hidden;
  container-type: inline-size;
}

.sv-pillar-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--pillar-gradient, var(--sv-gradient));
}

.sv-pillar-card--serogen {
  --pillar-gradient: var(--sv-serogen-gradient);
  --pillar-glow: var(--sv-serogen-glow);
  --pillar-border: var(--sv-serogen-border);
  --pillar-accent: #0d9488;
}

.sv-pillar-card--kbank {
  --pillar-gradient: var(--sv-kbank-gradient);
  --pillar-glow: var(--sv-kbank-glow);
  --pillar-border: var(--sv-kbank-border);
  --pillar-accent: #10b981;
}

.sv-pillar-card--seroepi {
  --pillar-gradient: var(--sv-seroepi-gradient);
  --pillar-glow: var(--sv-seroepi-glow);
  --pillar-border: var(--sv-seroepi-border);
  --pillar-accent: #8b5cf6;
}

.sv-pillar-card:hover {
  transform: translateY(-3px);
  border-color: var(--pillar-border, var(--sv-border));
  box-shadow: 0 14px 32px -12px var(--pillar-glow, var(--sv-glow));
}

.sv-pillar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  margin-bottom: 0.65rem;
}

.sv-pillar-title {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 1.22rem;
  font-weight: 800;
  margin: 0 !important;
  letter-spacing: -0.02em;
}

.sv-pillar-title svg {
  width: 1.15em;
  height: 1.15em;
  flex-shrink: 0;
  color: var(--pillar-accent, var(--sv-accent));
}

.sv-pillar-badge {
  white-space: nowrap;
  flex-shrink: 0;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.14);
  color: var(--pillar-accent, var(--sv-accent));
  border: 1px solid var(--pillar-border, var(--sv-border));
}

.sv-pillar-desc {
  font-size: 0.88rem;
  line-height: 1.58;
  opacity: 0.9;
  margin-bottom: 0.9rem;
}

.sv-pillar-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.sv-metric-pill {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.18rem 0.52rem;
  border-radius: 0.4rem;
  background: rgba(148, 163, 184, 0.10);
  border: 1px solid rgba(148, 163, 184, 0.18);
}

.sv-pillar-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding-top: 0.85rem;
  border-top: 1px solid rgba(148, 163, 184, 0.16);
  margin-top: auto;
}

.sv-pillar-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.34rem 0.7rem;
  border-radius: 0.45rem;
  text-decoration: none !important;
  color: #ffffff !important;
  background: var(--pillar-gradient, var(--sv-gradient));
  transition: opacity 0.15s ease, transform 0.15s ease;
}

.sv-pillar-link:hover {
  opacity: 0.92;
  transform: translateY(-1px);
}

.sv-pillar-link--ghost {
  background: transparent;
  color: var(--md-default-fg-color) !important;
  border: 1px solid rgba(148, 163, 184, 0.26);
}

.sv-pillar-link--ghost:hover {
  border-color: var(--pillar-accent, var(--sv-accent));
  background: rgba(148, 163, 184, 0.08);
}

/* ==========================================================================
   4. Standard Zensical Grid Cards (.grid.cards) with :has() & Fallback
   ========================================================================== */

.grid.cards > ul > li {
  border-radius: 0.75rem !important;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.grid.cards > ul > li:hover {
  transform: translateY(-2px);
  border-color: var(--sv-border) !important;
  box-shadow: 0 10px 26px -10px var(--sv-glow);
}

/* Content-based styling via :has() for cards containing code or action links */
.grid.cards > ul > li:has(a.md-button, .sv-pillar-link) {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

@supports not selector(:has(*)) {
  .grid.cards > ul > li.has-cta {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
  }
}

/* API Reference Symbol Headings */
.doc-heading {
  border-bottom: 1px solid rgba(148, 163, 184, 0.16);
  padding-bottom: 0.35rem;
}

/* ==========================================================================
   5. Marimo Slide Deck Action Bar & 16:9 Responsive Frame
   ========================================================================== */

.sv-deck-toolbar,
.serogen-deck-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.75rem 1.1rem;
  margin: 1.25rem 0 0.75rem 0;
  border-radius: 0.75rem;
  background: var(--sv-surface-tint);
  border: 1px solid var(--sv-border);
}

.sv-deck-toolbar .deck-meta,
.serogen-deck-toolbar .deck-meta {
  font-size: 0.85rem;
  opacity: 0.88;
}

.sv-deck-actions,
.serogen-deck-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.sv-deck-btn,
.serogen-deck-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.42rem 0.9rem;
  border-radius: 0.5rem;
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none !important;
  color: #ffffff !important;
  background: var(--sv-gradient);
  box-shadow: 0 4px 12px -4px var(--sv-glow);
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.sv-deck-btn:hover,
.serogen-deck-btn:hover {
  transform: translateY(-1px);
  opacity: 0.94;
}

.sv-slide-frame,
.serogen-slide-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  min-height: 560px;
  margin: 0.5rem 0 2rem 0;
  border-radius: 0.85rem;
  overflow: hidden;
  border: 1px solid var(--sv-border);
  box-shadow: 0 14px 34px -12px var(--sv-glow);
  background: #0b1120;
}

.sv-slide-frame iframe,
.serogen-slide-frame iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

/* ==========================================================================
   6. Interactive Web Application Frame (.sv-app-frame & .seroepi-app-frame)
   ========================================================================== */

.sv-app-toolbar,
.seroepi-app-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 0.65rem;
  padding: 0.55rem 0.95rem;
  border-radius: 0.65rem;
  background: var(--sv-surface-tint);
  border: 1px solid var(--sv-border);
  font-size: 0.85rem;
}

.sv-app-links,
.seroepi-app-links {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.sv-app-frame,
.seroepi-app-frame {
  width: 100%;
  height: calc(100vh - 10rem);
  min-height: 760px;
  border: 1px solid var(--sv-border);
  border-radius: 0.75rem;
  box-shadow: 0 14px 34px -12px var(--sv-glow);
  background: var(--md-default-bg-color);
}

/* ==========================================================================
   7. Unified SeroVerse Ecosystem Footer
   ========================================================================== */

.sv-footer-ecosystem {
  border-top: 1px solid rgba(148, 163, 184, 0.14);
  background: #070c17;
  color: #94a3b8;
  padding: 2rem 0 1.25rem 0;
}

.sv-footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  padding: 0 0.8rem;
}

@media (min-width: 768px) {
  .sv-footer-grid {
    grid-template-columns: 1.6fr 1fr 1fr 1fr;
  }
}

.sv-footer-col h4 {
  color: #f8fafc;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0 0 0.65rem 0;
}

.sv-footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: #f8fafc !important;
  font-size: 0.98rem;
  font-weight: 800;
  text-decoration: none !important;
  margin-bottom: 0.5rem;
}

.sv-footer-brand svg {
  width: 1.1rem;
  height: 1.1rem;
  color: #38bdf8;
  fill: none;
  stroke: currentColor;
}

.sv-footer-tagline {
  font-size: 0.78rem;
  line-height: 1.55;
  color: #94a3b8;
  margin: 0;
  max-width: 34ch;
}

.sv-footer-list {
  list-style: none !important;
  padding: 0 !important;
  margin: 0 !important;
}

.sv-footer-list li {
  margin: 0 0 0.38rem 0 !important;
  font-size: 0.78rem;
}

.sv-footer-list a {
  color: #94a3b8 !important;
  text-decoration: none !important;
  transition: color 0.15s ease;
}

.sv-footer-list a:hover {
  color: #38bdf8 !important;
}