/* ============================================================
   HanziStory v2 — 绘本风 Picture Book Style
   配色: 暖奶油底 #FFF8F0 / 朱红主色 #C73E3A / 金 #D4A574
   ============================================================ */

:root {
  --bg:        #FFF8F0;
  --card-bg:   #FFFFFF;
  --ink:       #2C2C2C;
  --ink-light: #666;
  --accent:    #C73E3A;
  --accent-light: #E85D56;
  --gold:      #D4A574;
  --gold-light:#F0DDB5;
  --border:    #E8DDD0;
  --radius:    14px;
  --shadow:    0 2px 12px rgba(199,62,58,0.08);
  --font-serif:'Noto Serif SC','STSong','SimSun',Georgia,serif;
  --font-sans: -apple-system,'Noto Sans SC','PingFang SC','Segoe UI',sans-serif;
}

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

body {
  margin: 0; padding: 20px 16px 60px;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
}

/* ========== Header ========== */
.header {
  text-align: center;
  padding: 28px 0 18px;
}
.logo {
  font-family: var(--font-serif);
  font-size: 32px;
  letter-spacing: 2px;
}
.logo .accent {
  color: var(--accent);
}
.tagline {
  margin-top: 4px;
  font-size: 14px;
  color: var(--gold);
  font-style: italic;
  letter-spacing: 0.5px;
}

/* ========== Search ========== */
.search-wrap {
  padding: 10px 0 16px;
}
.search-box {
  display: flex;
  gap: 8px;
  max-width: 480px;
  margin: 0 auto;
}
.search-box input {
  flex: 1;
  padding: 12px 20px;
  border: 2px solid var(--border);
  border-radius: 50px;
  font-size: 15px;
  outline: none;
  background: var(--card-bg);
  transition: border .25s, box-shadow .25s;
  font-family: var(--font-sans);
}
.search-box input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(199,62,58,0.12);
}
.search-btn {
  padding: 11px 22px;
  border: none;
  border-radius: 50px;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  cursor: pointer;
  white-space: nowrap;
  font-weight: 600;
  transition: opacity .2s, transform .15s;
}
.search-btn:hover { opacity: 0.88; }
.search-btn:active { transform: scale(0.97); }

/* ========== Category Chips ========== */
.chips {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  padding: 4px 0 18px;
}
.chip {
  padding: 6px 16px;
  border: 1.5px solid var(--border);
  border-radius: 20px;
  background: transparent;
  color: var(--ink-light);
  font-size: 13px;
  cursor: pointer;
  transition: all .2s;
  font-family: var(--font-sans);
}
.chip:hover { border-color: var(--gold); color: var(--ink); }
.chip.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* ========== Grid ========== */
.section-label {
  text-align: center;
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--ink);
  margin: 16px 0 14px;
  letter-spacing: 1px;
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(105px, 1fr));
  gap: 12px;
}
.card {
  background: var(--card-bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 10px;
  text-align: center;
  cursor: pointer;
  transition: transform .2s, box-shadow .2s, border-color .2s;
  box-shadow: var(--shadow);
  user-select: none;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(199,62,58,0.14);
  border-color: var(--accent-light);
}
.glyph {
  font-family: var(--font-serif);
  font-size: 34px;
  color: var(--ink);
  line-height: 1.2;
}
.py {
  font-size: 12px;
  color: var(--ink-light);
  margin-top: 2px;
}
.tr {
  font-size: 11px;
  color: var(--gold);
  margin-top: 1px;
}
.empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 40px 0;
  color: var(--ink-light);
  font-style: italic;
}

/* ========== Detail Page ========== */
.detail {
  animation: fadeIn .35s ease;
}
@keyframes fadeIn { from{opacity:0;transform:translateY(8px);} to{opacity:1;transform:none;} }
.detail-top {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
@media (min-width: 600px) {
  .detail-top { flex-direction: row; }
  .detail-left { width: 260px; flex-shrink: 0; }
  .detail-right { flex: 1; min-width: 0; }
}

/* Writer (HanziWriter stroke animation) area */
.writer-target {
  width: 220px;
  height: 220px;
  margin: 0 auto;
  border-radius: var(--radius);
  overflow: hidden;
  background: #FFFAF5;
  box-shadow: inset 0 2px 8px rgba(0,0,0,0.04), var(--shadow);
  display: flex;
  align-items: center;
  justify-content: center;
}
.writer-target > svg {
  display: block !important;
  max-width: 100% !important;
  max-height: 100% !important;
}
.writer-fallback {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-serif); font-size: 80px; color: var(--accent);
}

.writer-controls {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-top: 10px;
}
.mini-btn {
  padding: 7px 16px;
  border: 1.5px solid var(--border);
  border-radius: 20px;
  background: var(--card-bg);
  color: var(--accent);
  font-size: 13px;
  cursor: pointer;
  transition: all .2s;
  font-family: var(--font-sans);
  font-weight: 500;
}
.mini-btn:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.mini-btn:active { transform: scale(0.96); }

.badges {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  margin-top: 12px;
}
.py-badge {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  font-family: var(--font-serif);
}
.tr-badge {
  font-size: 14px;
  color: var(--accent);
  font-weight: 600;
}
.cat-badge {
  font-size: 11px;
  color: var(--ink-light);
  background: var(--gold-light);
  padding: 3px 12px;
  border-radius: 10px;
}

.back-btn {
  padding: 8px 18px;
  border: 1.5px solid var(--border);
  border-radius: 20px;
  background: transparent;
  color: var(--ink-light);
  font-size: 13px;
  cursor: pointer;
  transition: all .2s;
  margin-bottom: 12px;
  font-family: var(--font-sans);
}
.back-btn:hover {
  background: var(--bg);
  border-color: var(--gold);
}

.story-title {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--ink);
  margin-bottom: 14px;
}

/* ========== Evolution Strip (字源演变时间轴) ========== */
.evo-strip {
  display: flex;
  align-items: center;
  gap: 6px;
  overflow-x: auto;
  padding: 16px 4px 8px;
  margin: 14px 0;
  -webkit-overflow-scrolling: touch;
}
.evo-strip::-webkit-scrollbar { height: 5px; }
.evo-strip::-webkit-scrollbar-thumb {
  background: var(--gold-light); border-radius: 3px;
}
.evo-loading {
  width: 100%; text-align: center; padding: 24px;
  color: var(--ink-light); font-style: italic; font-size: 13px;
}

.evo-cell {
  flex: 0 0 auto;
  width: 120px;
  text-align: center;
  background: #FFFCF7;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 8px 12px;
  transition: transform .2s, box-shadow .2s;
  position: relative;
}
.evo-cell:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}
.evo-glyph {
  width: 90px;
  height: 90px;
  margin: 0 auto 8px;
  border-radius: 10px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  border: 1px solid var(--border);
}
.evo-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  /* Fade-in animation for loaded etymology SVGs */
  animation: evoFadeIn .5s ease forwards;
}
@keyframes evoFadeIn { from{opacity:0;transform:scale(0.92);} to{opacity:1;transform:none;} }
.evo-fallback svg { width: 100%; height: 100%; }
.evo-modern-char {
  font-family: var(--font-serif);
  font-size: 48px;
  color: var(--accent);
  line-height: 90px;
}
.evo-lab {
  font-size: 12px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.5px;
}
.evo-sub {
  display: block;
  font-size: 10px;
  font-weight: 400;
  color: var(--ink-light);
  margin-top: 1px;
}
.evo-cap {
  font-size: 10px;
  color: var(--gold);
  margin-top: 3px;
  line-height: 1.3;
}
.evo-badge {
  position: absolute;
  top: 4px; right: 4px;
  font-size: 9px;
  background: var(--gold-light);
  color: var(--gold);
  padding: 1px 6px;
  border-radius: 8px;
}
.evo-arrow {
  flex: 0 0 auto;
  font-size: 18px;
  color: var(--gold);
  font-weight: bold;
  padding: 0 2px;
}

/* Stage-specific tints */
.evo-cell.oracle { border-color: rgba(139,69,19,0.3); }
.evo-cell.bronze  { border-color: rgba(184,134,11,0.3); }
.evo-cell.seal   { border-color: rgba(47,79,79,0.3); }
.evo-cell.modern { border-color: rgba(199,62,58,0.3); }

/* ========== Birth Story Book ==========
.birth-book {
  background: linear-gradient(135deg, #FFFCF7 0%, #FFF5EB 100%);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin: 18px 0;
  position: relative;
  overflow: hidden;
}
.birth-book::before {
  content: '';
  position: absolute;
  top: -30px; left: -30px;
  width: 80px; height: 80px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212,165,116,0.15) 0%, transparent 70%);
}
.birth-kicker {
  font-family: var(--font-serif);
  font-size: 17px;
  color: var(--accent);
  margin-bottom: 8px;
}
.birth-text {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink);
  margin: 0 0 12px;
}
.birth-text b { color: var(--accent); }
.ref-note {
  font-size: 11px;
  color: var(--ink-light);
  line-height: 1.5;
  padding-top: 10px;
  border-top: 1px dashed var(--border);
}
.ref-note a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px dotted var(--accent);
}
.ref-note a:hover { color: var(--accent-light); }

/* ========== Dictionary Reference Card ========== */
.dict-card {
  background: linear-gradient(135deg, #FBEFE0 0%, #FDF6EC 100%);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: 14px;
  padding: 14px 16px 16px;
  margin: 16px 0;
  box-shadow: 0 2px 8px rgba(199,62,58,0.06);
}
.dict-kicker {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.3px;
  margin-bottom: 8px;
}
.dict-text {
  font-size: 13px;
  color: var(--ink-light);
  line-height: 1.6;
  margin: 0 0 12px;
}
.dict-text b { color: var(--ink); }
.dict-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  padding: 9px 16px;
  border-radius: 999px;
  transition: background 0.18s ease, transform 0.18s ease;
}
.dict-btn:hover {
  background: var(--accent-dark, #a82e2a);
  transform: translateY(-1px);
}
.dict-glyph {
  font-size: 16px;
  font-weight: 700;
  background: rgba(255,255,255,0.22);
  border-radius: 6px;
  padding: 0 6px;
  line-height: 1.4;
}

/* ========== Story Content ========== */
.story-content {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink);
  margin: 18px 0;
  white-space: pre-line;
}
.hook {
  background: var(--gold-light);
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 13px;
  margin: 14px 0;
}
.ex-title, .rel-title {
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--ink);
  margin: 18px 0 10px;
}
.ex {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
}
.ex:last-child { border-bottom: none; }
.ex .zh { font-size: 16px; color: var(--ink); }
.ex .py { font-size: 12px; color: var(--ink-light); }
.ex .en { font-size: 13px; color: var(--gold); font-style: italic; }
.rel-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.rel {
  padding: 8px 14px;
  background: var(--card-bg);
  border: 1.5px solid var(--border);
  border-radius: 20px;
  cursor: pointer;
  transition: all .2s;
  display: flex;
  align-items: center;
  gap: 6px;
}
.rel:hover {
  border-color: var(--accent);
  background: #FFFAF5;
}
.rc {
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--accent);
}
.rm {
  font-size: 12px;
  color: var(--ink-light);
}

/* ========== Error Toast ========== */
.error-msg {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--ink);
  color: #fff;
  padding: 12px 24px;
  border-radius: 30px;
  font-size: 13px;
  z-index: 999;
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
  max-width: 90vw;
  text-align: center;
}

/* ========== Footer ========== */
.footer {
  margin-top: 44px;
  padding: 20px 0;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 12px;
  color: var(--ink-light);
  line-height: 1.7;
}
.footer a {
  color: var(--accent);
  text-decoration: none;
}
.footer a:hover { text-decoration: underline; }

/* ========== Responsive ========== */
@media (max-width: 520px) {
  .evo-cell { width: 100px; }
  .evo-glyph { width: 70px; height: 70px; }
  .evo-modern-char { font-size: 36px; line-height: 70px; }
  .writer-target { width: 180px; height: 180px; }
  .detail-left { width: 200px; }
  body { padding: 12px 10px 50px; }
  .grid { grid-template-columns: repeat(auto-fill, minmax(88px, 1fr)); gap: 8px; }
  .card { padding: 12px 8px; }
  .glyph { font-size: 28px; }
}

/* ========== 动态字义场景（让字按意思动起来） ========== */
.motion-card {
  background: linear-gradient(180deg, #FFFDF8 0%, #FFF6EC 100%);
  border: 2px solid var(--gold-light);
  border-radius: var(--radius);
  padding: 16px;
  margin: 18px 0 22px;
  box-shadow: var(--shadow);
  text-align: center;
}
.motion-kicker {
  font-family: var(--font-serif);
  color: var(--accent);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .3px;
  margin-bottom: 10px;
}
.motion-stage {
  max-width: 320px;
  margin: 0 auto;
}
.motion-stage svg {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
}
.motion-cap {
  margin: 12px auto 12px;
  max-width: 92%;
  font-size: 14px;
  color: var(--ink-light);
  font-style: italic;
}
.mini-btn {
  background: #fff;
  border: 1.5px solid var(--accent);
  color: var(--accent);
  border-radius: 20px;
  padding: 7px 16px;
  font-size: 13px;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: background .2s, color .2s;
}
.mini-btn:hover { background: var(--accent); color: #fff; }

/* ---- 动画关键帧 ---- */
@keyframes mBob   { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-5px)} }
@keyframes mRotate{ to { transform: rotate(360deg) } }
@keyframes mPulse { 0%,100%{transform:scale(1)} 50%{transform:scale(1.12)} }
@keyframes mBlink { 0%,90%,100%{transform:scaleY(1)} 96%{transform:scaleY(0.08)} }
@keyframes mSway  { 0%,100%{transform:rotate(-3deg)} 50%{transform:rotate(3deg)} }
@keyframes mGrow  { 0%,100%{transform:scaleY(1)} 50%{transform:scaleY(1.12)} }
@keyframes mFlicker{ 0%{transform:scale(1,1);opacity:1} 100%{transform:scale(0.92,1.18);opacity:0.82} }
@keyframes mFloat { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-8px)} }
@keyframes mFall  { 0%{transform:translateY(-12px);opacity:0} 12%{opacity:1} 100%{transform:translateY(46px);opacity:0} }
@keyframes mWalk  { 0%,100%{transform:translateX(-7px)} 50%{transform:translateX(7px)} }
@keyframes mTwinkle{ 0%,100%{opacity:0.2} 50%{opacity:1} }
@keyframes mRipple{ 0%,100%{transform:translateX(0)} 50%{transform:translateX(7px)} }
@keyframes mJaw   { 0%,100%{transform:scaleY(1)} 50%{transform:scaleY(0.42)} }
@keyframes mSpread{ 0%,100%{transform:scaleX(1)} 50%{transform:scaleX(1.16)} }
@keyframes mCenter{ 0%,100%{transform:scale(1);opacity:0.5} 50%{transform:scale(1.7);opacity:1} }
@keyframes mDraw  { to { stroke-dashoffset: 0 } }

/* ---- 动画类（transform-box 让缩放/旋转围绕元素自身中心） ---- */
.m-bob    { transform-box: fill-box; transform-origin: center; animation: mBob 1.6s ease-in-out infinite; }
.m-rotate { transform-box: fill-box; transform-origin: center; animation: mRotate 9s linear infinite; }
.m-pulse  { transform-box: fill-box; transform-origin: center; animation: mPulse 1.4s ease-in-out infinite; }
.m-blink  { transform-box: fill-box; transform-origin: center; animation: mBlink 4.2s ease-in-out infinite; }
.m-sway   { transform-box: fill-box; transform-origin: bottom center; animation: mSway 3s ease-in-out infinite; }
.m-grow   { transform-box: fill-box; transform-origin: bottom center; animation: mGrow 2.6s ease-in-out infinite; }
.m-flicker{ transform-box: fill-box; transform-origin: bottom center; animation: mFlicker .55s ease-in-out infinite alternate; }
.m-float  { transform-box: fill-box; transform-origin: center; animation: mFloat 3.4s ease-in-out infinite; }
.m-fall   { transform-box: fill-box; transform-origin: center; animation: mFall 1.1s linear infinite; }
.m-walk   { transform-box: fill-box; transform-origin: center; animation: mWalk 1.8s ease-in-out infinite; }
.m-twinkle{ transform-box: fill-box; transform-origin: center; animation: mTwinkle 2s ease-in-out infinite; }
.m-ripple { transform-box: fill-box; transform-origin: center; animation: mRipple 2.2s ease-in-out infinite; }
.m-jaw    { transform-box: fill-box; transform-origin: top center; animation: mJaw 1.4s ease-in-out infinite; }
.m-spread { transform-box: fill-box; transform-origin: center; animation: mSpread 2.4s ease-in-out infinite; }
.m-center { transform-box: fill-box; transform-origin: center; animation: mCenter 1.8s ease-in-out infinite; }
.m-draw   { stroke-dasharray: 240; stroke-dashoffset: 240; animation: mDraw 1.6s ease-in-out infinite; }