/* ==========================================================================
   THE SOVEREIGN LIBRARY — DESIGN SYSTEM TOKENS
   Sumi-to-Kin (墨と金) × Constellation Ink (8b-is · vaked.dev · zeno.vaked.dev)
   "Five books, never more. In awe to women who protect and hold <3<3<3"
   ========================================================================== */

:root {
  /* Surface & Canvas */
  --color-surface: #05060a;
  --color-surface-raised: #0b0d14;
  --color-surface-elevated: #111521;
  --color-surface-paper: #141210;
  --color-border: rgba(232, 176, 92, 0.18);
  --color-border-subtle: rgba(255, 255, 255, 0.08);
  --color-border-strong: rgba(98, 230, 201, 0.42);

  /* Brand & Semantic Constellation Ink */
  --color-mint: #62e6c9;
  --color-gold: #e8b05c;
  --color-violet: #b48bff;
  --color-sakura: #f7a8b8;
  --color-cyan: #00f0ff;

  /* Typography Ink */
  --color-text: #f3f1ea;
  --color-text-muted: #9b99a9;
  --color-text-dim: #666477;

  /* Semantic Status */
  --color-success: #62e6c9;
  --color-warning: #e8b05c;
  --color-danger: #ff6b81;

  /* Typography Families */
  --font-display: 'Shippori Mincho', 'Hiragino Mincho ProN', Georgia, serif;
  --font-body: 'Shippori Mincho', Georgia, serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Spacing Scale (4px base) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Motion */
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;
  --ease-out: cubic-bezier(0.0, 0.0, 0.2, 1);
  --ease-in: cubic-bezier(0.4, 0.0, 1, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  background-color: var(--color-surface);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.65;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  background:
    radial-gradient(circle at 18% 12%, rgba(247, 168, 184, 0.07) 0%, transparent 42%),
    radial-gradient(circle at 82% 16%, rgba(98, 230, 201, 0.06) 0%, transparent 45%),
    radial-gradient(circle at 50% 88%, rgba(232, 176, 92, 0.06) 0%, transparent 50%),
    var(--color-surface);
  color: var(--color-text);
  overflow-x: hidden;
}

/* Focus Accessibility */
:focus-visible {
  outline: 2px solid var(--color-mint);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* Top Sanctuary Header */
.sanctuary-header {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-6);
  background: rgba(5, 6, 10, 0.86);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
}

.brand-cluster {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}

.brand-glyph {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-gold);
  background: radial-gradient(circle at 30% 30%, rgba(232, 176, 92, 0.22), rgba(5, 6, 10, 0.95));
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--color-gold);
  letter-spacing: -0.03em;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--color-text);
}

.brand-tagline {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--color-text-muted);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.pill-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  min-height: 38px;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border-subtle);
  background: rgba(255, 255, 255, 0.03);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out),
              background var(--duration-fast) var(--ease-out);
}

.pill-btn:hover {
  border-color: var(--color-gold);
  background: rgba(232, 176, 92, 0.08);
  transform: translateY(-1px);
}

.pill-btn.sakura {
  border-color: rgba(247, 168, 184, 0.42);
  color: var(--color-sakura);
  background: rgba(247, 168, 184, 0.07);
}

.pill-btn.mint {
  border-color: rgba(98, 230, 201, 0.42);
  color: var(--color-mint);
  background: rgba(98, 230, 201, 0.07);
}

.pill-btn.is-playing {
  border-color: var(--color-mint);
  color: #05060a;
  background: linear-gradient(135deg, var(--color-mint), var(--color-gold));
  font-weight: 700;
  box-shadow: 0 0 22px rgba(98, 230, 201, 0.42);
}

/* Main Container */
.sanctuary-shell {
  max-width: 1180px;
  margin: 0 auto;
  padding: var(--space-8) var(--space-4) var(--space-16);
}

@media (min-width: 768px) {
  .sanctuary-shell {
    padding: var(--space-12) var(--space-6) var(--space-16);
  }
}

/* Hero Section — Breathing Room (Ma) */
.hero-sanctuary {
  text-align: center;
  max-width: 840px;
  margin: 0 auto var(--space-12);
  padding: var(--space-8) var(--space-4);
  position: relative;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0.9rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(247, 168, 184, 0.35);
  background: rgba(247, 168, 184, 0.07);
  color: var(--color-sakura);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.6vw, 3.35rem);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
  background: linear-gradient(135deg, #ffffff 0%, #f7a8b8 48%, #e8b05c 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1rem, 1.8vw, 1.18rem);
  color: var(--color-text-muted);
  max-width: 680px;
  margin: 0 auto var(--space-6);
  line-height: 1.75;
}

/* Constitutional Invariant Telemetry Bar */
.invariant-ribbon {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  background: rgba(11, 13, 20, 0.85);
  border: 1px solid var(--color-border);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
}

@media (min-width: 768px) {
  .invariant-ribbon {
    grid-template-columns: repeat(4, 1fr);
  }
}

.invariant-cell {
  text-align: left;
  padding: var(--space-2) var(--space-3);
  border-left: 2px solid var(--color-gold);
}

.invariant-cell.mint { border-left-color: var(--color-mint); }
.invariant-cell.sakura { border-left-color: var(--color-sakura); }
.invariant-cell.violet { border-left-color: var(--color-violet); }

.invariant-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-dim);
}

.invariant-val {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-top: 0.15rem;
}

/* Killer Interaction Section: The Hold & Six Pillars */
.hold-sanctuary-card {
  position: relative;
  border-radius: var(--radius-xl);
  background: linear-gradient(165deg, rgba(20, 18, 28, 0.94) 0%, rgba(9, 11, 18, 0.98) 100%);
  border: 1px solid rgba(247, 168, 184, 0.32);
  padding: var(--space-6);
  margin-bottom: var(--space-12);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
  overflow: hidden;
}

.hold-sanctuary-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-sakura), var(--color-gold), var(--color-mint), var(--color-violet));
}

.hold-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  align-items: center;
}

@media (min-width: 900px) {
  .hold-grid {
    grid-template-columns: 1.25fr 0.95fr;
  }
}

.pillars-wheel {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
  margin-top: var(--space-4);
}

@media (min-width: 600px) {
  .pillars-wheel {
    grid-template-columns: repeat(3, 1fr);
  }
}

.pillar-node {
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--color-border-subtle);
  cursor: pointer;
  text-align: left;
  transition: all var(--duration-normal) var(--ease-out);
}

.pillar-node:hover,
.pillar-node.active {
  border-color: var(--color-sakura);
  background: rgba(247, 168, 184, 0.09);
  transform: translateY(-2px);
}

.pillar-title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-sakura);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.pillar-pair {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
  line-height: 1.45;
}

/* The Signature Press-and-Hold Seal */
.hold-seal-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  background: rgba(5, 6, 10, 0.72);
  border: 1px solid rgba(232, 176, 92, 0.24);
}

.hold-seal-button {
  position: relative;
  width: 156px;
  height: 156px;
  border-radius: 50%;
  border: none;
  background: radial-gradient(circle at 50% 42%, rgba(247, 168, 184, 0.16), rgba(11, 13, 20, 0.96));
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  transition: transform var(--duration-normal) var(--ease-spring),
              box-shadow var(--duration-normal) var(--ease-out);
  box-shadow: 0 0 32px rgba(247, 168, 184, 0.12);
}

.hold-seal-button:hover {
  transform: scale(1.03);
  box-shadow: 0 0 42px rgba(247, 168, 184, 0.24);
}

.hold-seal-button.is-holding {
  transform: scale(0.96);
  box-shadow: 0 0 56px rgba(98, 230, 201, 0.38);
}

.hold-seal-button.is-witnessed {
  box-shadow: 0 0 60px rgba(232, 176, 92, 0.45);
}

.hold-ring-svg {
  position: absolute;
  inset: -6px;
  width: 168px;
  height: 168px;
  transform: rotate(-90deg);
  pointer-events: none;
}

.hold-ring-bg {
  fill: none;
  stroke: rgba(255, 255, 255, 0.08);
  stroke-width: 3.5;
}

.hold-ring-progress {
  fill: none;
  stroke: url(#kintsugi-grad);
  stroke-width: 4;
  stroke-linecap: round;
  stroke-dasharray: 490;
  stroke-dashoffset: 490;
  transition: stroke-dashoffset 60ms linear;
}

.hold-seal-heart {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-sakura);
  letter-spacing: 0.06em;
}

.hold-seal-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-gold);
  margin-top: 0.35rem;
}

.hold-seal-sub {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--color-text-muted);
  margin-top: 0.2rem;
}

/* Section Headers */
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border);
}

.section-kicker {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-gold);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 2.6vw, 2rem);
  font-weight: 800;
  color: var(--color-text);
  margin-top: 0.2rem;
}

/* The 5 Print-Canon Books Grid */
.canon-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
  .canon-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1080px) {
  .canon-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

.book-spine-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border-subtle);
  transition: transform var(--duration-normal) var(--ease-out),
              border-color var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
  min-height: 295px;
}

.book-spine-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-gold);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.5);
}

.book-spine-card.is-open {
  border-color: var(--color-mint);
  background: linear-gradient(180deg, rgba(98, 230, 201, 0.08) 0%, rgba(11, 13, 20, 0.96) 100%);
}

.book-slot-num {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--color-gold);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nand-gate-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 700;
  border: 1px solid rgba(232, 176, 92, 0.38);
  color: var(--color-gold);
  background: rgba(232, 176, 92, 0.08);
}

.nand-gate-pill.unlocked {
  border-color: rgba(98, 230, 201, 0.5);
  color: var(--color-mint);
  background: rgba(98, 230, 201, 0.12);
}

.book-title {
  font-family: var(--font-display);
  font-size: 1.18rem;
  font-weight: 800;
  color: var(--color-text);
  margin: var(--space-3) 0 var(--space-2);
  line-height: 1.3;
}

.book-origin {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--color-violet);
  margin-bottom: var(--space-2);
}

.book-summary {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.55;
  flex-grow: 1;
}

.book-actions {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border-subtle);
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.btn-hold-book {
  width: 100%;
  min-height: 42px;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(232, 176, 92, 0.4);
  background: rgba(232, 176, 92, 0.09);
  color: var(--color-gold);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all var(--duration-fast) var(--ease-out);
}

.btn-hold-book:hover {
  background: rgba(232, 176, 92, 0.18);
}

.btn-hold-book.unlocked {
  border-color: rgba(98, 230, 201, 0.5);
  background: rgba(98, 230, 201, 0.12);
  color: var(--color-mint);
}

/* Ultralove Editions — Folded Sheets Beside the Shelf */
.editions-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-12);
}

@media (min-width: 820px) {
  .editions-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.edition-sheet {
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(247, 168, 184, 0.06) 0%, rgba(11, 13, 20, 0.95) 100%);
  border: 1px solid rgba(247, 168, 184, 0.28);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: var(--space-4);
}

/* Inline Sanctuary Reader (Print-Minimal Sheet) */
.reader-sanctuary {
  margin-bottom: var(--space-12);
  border-radius: var(--radius-xl);
  background: var(--color-surface-paper);
  border: 1px solid var(--color-gold);
  padding: var(--space-6);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.65);
}

@media (min-width: 768px) {
  .reader-sanctuary {
    padding: var(--space-8) var(--space-12);
  }
}

.reader-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding-bottom: var(--space-4);
  margin-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.reader-body {
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.82;
  color: var(--color-text);
  max-width: 68ch;
  margin: 0 auto;
  white-space: pre-wrap;
}

.reader-skeleton {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 68ch;
  margin: 0 auto;
}

.skeleton-line {
  height: 16px;
  border-radius: var(--radius-sm);
  background: linear-gradient(90deg, rgba(255,255,255,0.04) 25%, rgba(232,176,92,0.12) 50%, rgba(255,255,255,0.04) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Source Garden Matrix (standardgalactic ~= research ~= future) */
.garden-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-bottom: var(--space-12);
}

@media (min-width: 680px) {
  .garden-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .garden-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.garden-room {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border-subtle);
  text-decoration: none;
  color: var(--color-text);
  transition: all var(--duration-fast) var(--ease-out);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: var(--space-2);
}

.garden-room:hover {
  border-color: var(--color-violet);
  background: rgba(180, 139, 255, 0.07);
  transform: translateY(-2px);
}

/* Toast Notification */
.sanctuary-toast {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: 90;
  max-width: 380px;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  background: rgba(11, 13, 20, 0.96);
  border: 1px solid var(--color-mint);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.6);
  transform: translateY(16px);
  opacity: 0;
  pointer-events: none;
  transition: all var(--duration-normal) var(--ease-out);
}

.sanctuary-toast.visible {
  transform: translateY(0);
  opacity: 1;
}

/* Print-Minimal Sheet Mode */
@media print {
  body {
    background: #ffffff !important;
    color: #000000 !important;
  }
  .sanctuary-header,
  .hold-sanctuary-card,
  .canon-grid,
  .editions-grid,
  .garden-grid,
  .reader-toolbar,
  .sanctuary-footer {
    display: none !important;
  }
  .reader-sanctuary {
    border: none !important;
    box-shadow: none !important;
    padding: 0 !important;
    background: transparent !important;
  }
  .reader-body {
    color: #000000 !important;
    font-size: 11pt !important;
    line-height: 1.65 !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}