:root {
  --ink: #07111f;
  --ink-2: #0d1d35;
  --indigo: #162f56;
  --paper: #f3ead6;
  --paper-2: #e7d8b8;
  --copper: #c99349;
  --gold: #e0b15b;
  --jade: #82b99c;
  --rose: #c98c85;
  --text: #f8edd6;
  --muted: #c6b997;
  --paper-text: #251c13;
  --line: rgba(224, 177, 91, 0.38);
  --shadow: 0 22px 58px rgba(0, 0, 0, 0.34);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--ink);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  font-family: "Noto Serif TC", "Songti TC", "PingFang TC", "Microsoft JhengHei", serif;
  background:
    radial-gradient(circle at 78% 12%, rgba(224, 177, 91, 0.16), transparent 22rem),
    linear-gradient(135deg, #06101d 0%, #0b1930 48%, #10100d 100%);
  letter-spacing: 0;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
}

.library-night {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.9;
}

.library-night::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 72px 72px, 72px 72px;
  mask-image: linear-gradient(to bottom, transparent, black 16%, black 82%, transparent);
}

.shelf-line {
  position: absolute;
  left: 6vw;
  right: 6vw;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(201, 147, 73, 0.46), transparent);
}

.shelf-line-a { top: 18vh; }
.shelf-line-b { top: 52vh; }
.shelf-line-c { bottom: 14vh; }

.paper-moon {
  position: absolute;
  top: 9vh;
  right: 10vw;
  width: 116px;
  aspect-ratio: 1;
  border: 1px solid rgba(224, 177, 91, 0.38);
  border-radius: 50%;
  background:
    radial-gradient(circle at 34% 32%, rgba(255, 247, 218, 0.78), transparent 0.24rem),
    radial-gradient(circle, rgba(243, 234, 214, 0.18), rgba(224, 177, 91, 0.06) 56%, transparent 60%);
}

.scene-stack {
  position: relative;
  z-index: 1;
  min-height: 100vh;
}

.scene {
  min-height: 100vh;
  padding: 28px 16px;
  display: none;
}

.scene.is-active {
  display: grid;
  place-items: center;
}

.scene-inner {
  width: min(100%, 1080px);
  margin: 0 auto;
}

.narrow-inner {
  width: min(100%, 720px);
}

.home-inner {
  min-height: calc(100vh - 56px);
  display: grid;
  align-content: center;
  gap: 18px;
}

.eyebrow {
  margin: 0;
  color: var(--gold);
  font-family: "PingFang TC", "Microsoft JhengHei", sans-serif;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
}

.hero-title {
  margin: 0;
  max-width: 8em;
  color: var(--paper);
  font-size: clamp(3rem, 14vw, 6.8rem);
  line-height: 0.98;
  font-weight: 700;
  text-shadow: 0 18px 44px rgba(0, 0, 0, 0.5);
}

.hero-copy,
.scene-copy,
.ritual-status,
.mirror-note,
.footer-line,
.lock-note,
.history-empty {
  color: var(--muted);
  line-height: 1.85;
}

.hero-copy {
  margin: 0;
  max-width: 36rem;
  font-size: 1.08rem;
}

.guide-dialog {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 10px;
}

.guide-avatar {
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border: 1px solid rgba(224, 177, 91, 0.58);
  border-radius: 50%;
  color: var(--ink);
  background: radial-gradient(circle at 32% 24%, #f7d98d, #b97934 72%);
  box-shadow: 0 0 0 6px rgba(201, 147, 73, 0.1);
  font-weight: 800;
  overflow: hidden;
}

.guide-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

.guide-name {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  margin-bottom: 6px;
  padding: 2px 8px;
  border: 1px solid rgba(224, 177, 91, 0.34);
  border-radius: 999px;
  color: var(--gold);
  background: rgba(201, 147, 73, 0.08);
  font-family: "PingFang TC", "Microsoft JhengHei", sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
}

.guide-bubble {
  position: relative;
  width: min(100%, 360px);
  padding: 13px 16px;
  border: 1px solid rgba(224, 177, 91, 0.34);
  border-radius: var(--radius);
  background: rgba(7, 17, 31, 0.68);
}

.guide-bubble p {
  margin: 0;
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  width: min(100%, 560px);
  margin-top: 4px;
}

.topic-btn,
.primary-btn,
.secondary-btn,
.text-link {
  border: 0;
  min-height: 44px;
}

.topic-btn {
  padding: 14px 12px;
  border: 1px solid rgba(224, 177, 91, 0.34);
  border-radius: var(--radius);
  color: var(--paper);
  background: rgba(13, 29, 53, 0.72);
  text-align: left;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.topic-btn:hover,
.topic-btn:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(224, 177, 91, 0.78);
  background: rgba(22, 47, 86, 0.88);
  outline: none;
}

.topic-btn small {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-family: "PingFang TC", "Microsoft JhengHei", sans-serif;
  font-size: 0.78rem;
}

.primary-btn,
.secondary-btn {
  padding: 12px 18px;
  border-radius: var(--radius);
  color: #181109;
  background: linear-gradient(180deg, #f0c872, #bb7934);
  box-shadow: 0 12px 26px rgba(0, 0, 0, 0.28);
  font-weight: 700;
}

.secondary-btn {
  color: var(--paper);
  background: rgba(13, 29, 53, 0.9);
  border: 1px solid rgba(224, 177, 91, 0.38);
}

.text-link {
  padding: 8px 0;
  color: var(--gold);
  background: transparent;
  text-decoration: underline;
  text-underline-offset: 5px;
}

.primary-btn:focus-visible,
.secondary-btn:focus-visible,
.text-link:focus-visible,
.toss-btn:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.mirror-note {
  max-width: 34rem;
  margin: 8px 0 0;
  font-size: 0.95rem;
}

.scene-title {
  margin: 0;
  color: var(--paper);
  font-size: clamp(2rem, 7vw, 4rem);
  line-height: 1.15;
}

.ritual-inner {
  display: grid;
  gap: 14px;
}

.ritual-layout,
.result-layout {
  display: grid;
  gap: 18px;
}

.coin-stage,
.hex-build-card,
.hex-card,
.result-panel,
.lock-area {
  border: 1px solid rgba(224, 177, 91, 0.26);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01)),
    rgba(7, 17, 31, 0.72);
  box-shadow: var(--shadow);
}

.coin-stage {
  display: grid;
  place-items: center;
  gap: 18px;
  min-height: 320px;
  padding: 24px;
}

.ritual-companion,
.result-guide-card {
  width: min(100%, 420px);
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  justify-self: center;
  padding: 12px;
  border: 1px solid rgba(224, 177, 91, 0.28);
  border-radius: var(--radius);
  background: rgba(243, 234, 214, 0.08);
}

.companion-img {
  width: 76px;
  aspect-ratio: 1;
  display: block;
  border: 1px solid rgba(224, 177, 91, 0.45);
  border-radius: var(--radius);
  object-fit: cover;
  background: rgba(7, 17, 31, 0.7);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.28);
}

.companion-copy p {
  margin: 0;
  color: var(--paper);
  line-height: 1.7;
}

.ritual-status {
  max-width: 32rem;
  margin: 0;
  text-align: center;
}

.coins {
  display: flex;
  justify-content: center;
  gap: clamp(10px, 4vw, 28px);
  width: 100%;
}

.coin {
  width: clamp(72px, 22vw, 112px);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  position: relative;
  border-radius: 50%;
  border: 5px solid #7e4b1e;
  color: #3a210d;
  background:
    radial-gradient(circle, transparent 0 14%, #6f421a 15% 22%, transparent 23%),
    radial-gradient(circle at 34% 24%, #f6dc94, #d39a47 45%, #955823 100%);
  box-shadow: inset 0 0 0 4px rgba(255, 231, 166, 0.34), 0 14px 24px rgba(0, 0, 0, 0.32);
  font-weight: 800;
}

.coin.is-flipping {
  animation: coinFlip 0.58s ease both;
}

.coin[data-face="反"] {
  background:
    radial-gradient(circle, transparent 0 14%, #553115 15% 22%, transparent 23%),
    radial-gradient(circle at 40% 26%, #dfb15f, #a86628 56%, #633516 100%);
}

.hex-build-card {
  min-height: 360px;
  display: grid;
  place-items: center;
  padding: 26px 18px;
}

.hex-build,
.result-lines {
  display: flex;
  flex-direction: column-reverse;
  gap: 14px;
  width: min(100%, 280px);
}

.yao-line {
  position: relative;
  min-height: 18px;
  display: flex;
  align-items: center;
  gap: 18px;
}

.yao-line::before,
.yao-line::after {
  content: "";
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(90deg, #b97733, #f2c86a, #b97733);
  box-shadow: 0 0 16px rgba(224, 177, 91, 0.26);
}

.yao-line.yang::before {
  width: 100%;
}

.yao-line.yang::after {
  display: none;
}

.yao-line.yin::before,
.yao-line.yin::after {
  flex: 1 1 0;
}

.yao-line.is-changing::before,
.yao-line.is-changing::after {
  background: linear-gradient(90deg, #fff1a8, #f2c86a, #fff1a8);
  box-shadow: 0 0 22px rgba(242, 200, 106, 0.74);
}

.yao-line.is-changing .change-dot {
  position: absolute;
  right: -26px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 18px var(--gold);
}

.hex-name-reveal {
  margin: 18px 0 0;
  color: var(--paper);
  font-size: 1.4rem;
}

.daily-notice {
  margin: 0 0 12px;
  color: var(--gold);
}

.result-layout {
  align-items: start;
}

.hex-card {
  padding: 24px;
  background:
    linear-gradient(145deg, rgba(243, 234, 214, 0.96), rgba(231, 216, 184, 0.94)),
    var(--paper);
  color: var(--paper-text);
}

.hex-symbol {
  font-family: "Noto Sans Symbols 2", "Apple Symbols", "Segoe UI Symbol", serif;
  font-size: clamp(5rem, 26vw, 9rem);
  line-height: 1;
  color: #17110b;
}

.hex-heading {
  display: grid;
  gap: 8px;
  margin-bottom: 20px;
}

.hex-id {
  margin: 0;
  color: #7a5932;
  font-size: 0.88rem;
}

.hex-heading h2 {
  margin: 0;
  font-size: clamp(2rem, 10vw, 4rem);
  line-height: 1;
}

.hex-heading small,
.zhi-card small {
  display: block;
  margin-top: 6px;
  color: #785932;
  font-size: 1rem;
  font-weight: 400;
}

.tone-badge {
  justify-self: start;
  min-height: 30px;
  padding: 5px 10px;
  border-radius: 999px;
  color: #181109;
  background: var(--gold);
  font-family: "PingFang TC", "Microsoft JhengHei", sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
}

.tone-badge.tone-bright { background: #f1c968; }
.tone-badge.tone-rising { background: var(--jade); }
.tone-badge.tone-steady { background: #90a6c5; }
.tone-badge.tone-deep { color: var(--paper); background: #515c86; }

.keyword-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.keyword-row span {
  padding: 6px 9px;
  border: 1px solid rgba(37, 28, 19, 0.18);
  border-radius: 999px;
  color: #5d4328;
  background: rgba(255, 255, 255, 0.32);
  font-size: 0.82rem;
}

.result-copy {
  display: grid;
  gap: 12px;
}

.result-guide-card {
  justify-self: stretch;
  width: 100%;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.01)),
    rgba(13, 29, 53, 0.78);
  box-shadow: var(--shadow);
}

.result-panel,
.lock-area {
  padding: 18px;
}

.result-panel h3 {
  margin: 0 0 10px;
  color: var(--gold);
  font-size: 1.05rem;
}

.result-panel p,
.lock-area p {
  margin: 0;
  line-height: 1.88;
}

.zhi-card {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 12px 0;
  padding: 12px;
  border: 1px solid rgba(224, 177, 91, 0.26);
  border-radius: var(--radius);
  background: rgba(243, 234, 214, 0.08);
}

.zhi-symbol {
  font-family: "Noto Sans Symbols 2", "Apple Symbols", "Segoe UI Symbol", serif;
  color: var(--gold);
  font-size: 2.8rem;
  line-height: 1;
}

.zhi-card small {
  color: var(--muted);
}

.combo-text {
  color: var(--muted);
}

.mirror-panel {
  border-color: rgba(130, 185, 156, 0.34);
}

.mirror-sign {
  margin-top: 10px !important;
  color: var(--gold);
  text-align: right;
}

.lock-title {
  color: var(--paper);
  font-weight: 700;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin: 8px 0 0;
}

.redline-card {
  position: fixed;
  right: max(16px, env(safe-area-inset-right));
  bottom: max(16px, env(safe-area-inset-bottom));
  z-index: 5;
  width: min(calc(100vw - 32px), 330px);
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  padding: 10px;
  border: 1px solid rgba(201, 140, 133, 0.58);
  border-radius: var(--radius);
  color: var(--paper);
  background:
    linear-gradient(135deg, rgba(201, 140, 133, 0.18), rgba(7, 17, 31, 0.94)),
    rgba(7, 17, 31, 0.94);
  box-shadow: 0 18px 38px rgba(0, 0, 0, 0.42);
  text-align: left;
}

.redline-card[hidden] {
  display: none;
}

.redline-card .companion-img {
  width: 72px;
  border-color: rgba(201, 140, 133, 0.62);
}

.redline-copy {
  display: block;
  min-width: 0;
}

.redline-copy > span:last-child {
  display: block;
  color: var(--paper);
  line-height: 1.65;
}

.redline-card:focus-visible {
  outline: 2px solid var(--rose);
  outline-offset: 3px;
}

.history-list {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 20px 0;
  list-style: none;
}

.history-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 12px;
  border: 1px solid rgba(224, 177, 91, 0.28);
  border-radius: var(--radius);
  background: rgba(7, 17, 31, 0.74);
  color: var(--paper);
}

.history-item button {
  display: contents;
  color: inherit;
}

.history-symbol {
  color: var(--gold);
  font-size: 2rem;
}

.history-meta {
  color: var(--muted);
  font-family: "PingFang TC", "Microsoft JhengHei", sans-serif;
  font-size: 0.86rem;
}

@keyframes coinFlip {
  0% { transform: translateY(0) rotateY(0deg) rotateZ(0deg); }
  48% { transform: translateY(-32px) rotateY(540deg) rotateZ(14deg); }
  100% { transform: translateY(0) rotateY(1080deg) rotateZ(0deg); }
}

@media (min-width: 760px) {
  .scene {
    padding: 44px 28px;
  }

  .topic-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .ritual-layout {
    grid-template-columns: minmax(0, 1fr) 360px;
  }

  .result-layout {
    grid-template-columns: minmax(300px, 390px) minmax(0, 1fr);
  }

  .home-inner {
    padding-left: 5vw;
  }
}

@media (max-width: 420px) {
  .topic-grid {
    grid-template-columns: 1fr;
  }

  .coins {
    gap: 8px;
  }

  .history-item {
    grid-template-columns: auto 1fr;
  }

  .history-meta {
    grid-column: 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
  }
}