:root {
  color-scheme: light dark;
  --font-body: "Aptos", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-display: "Iowan Old Style", "Songti SC", "STSong", "Microsoft YaHei", serif;
  --bg: #eef0e5;
  --bg-2: #ddebd3;
  --ink: #10170f;
  --muted: #5c6758;
  --line: rgba(33, 67, 49, 0.16);
  --glass: rgba(255, 255, 255, 0.48);
  --glass-strong: rgba(255, 255, 255, 0.68);
  --accent: #1f5f45;
  --accent-2: #8fc59a;
  --accent-3: #d7ebbc;
  --danger: #98513e;
  --shadow: 0 24px 80px rgba(20, 35, 25, 0.18);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --maxw: 1180px;
}

[data-theme="dark"] {
  --bg: #06110d;
  --bg-2: #0d251b;
  --ink: #f0f5e8;
  --muted: #a5b7a8;
  --line: rgba(180, 239, 194, 0.14);
  --glass: rgba(13, 33, 25, 0.54);
  --glass-strong: rgba(21, 48, 37, 0.72);
  --accent: #9df08e;
  --accent-2: #56b887;
  --accent-3: #c8ff9b;
  --danger: #ffb09e;
  --shadow: 0 32px 90px rgba(0, 0, 0, 0.46);
}

* { box-sizing: border-box; }

html { min-height: 100%; }

body {
  min-height: 100%;
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(780px 540px at 9% 0%, rgba(143, 197, 154, 0.42), transparent 66%),
    radial-gradient(620px 460px at 94% 8%, rgba(215, 235, 188, 0.54), transparent 70%),
    linear-gradient(135deg, var(--bg), var(--bg-2));
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(31, 95, 69, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31, 95, 69, 0.045) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.8), transparent 76%);
}

a { color: inherit; text-decoration: none; }
button, input { font: inherit; }

.site-shell {
  width: min(var(--maxw), calc(100% - 28px));
  margin: 16px auto 52px;
}

.glass {
  background: linear-gradient(135deg, var(--glass-strong), var(--glass));
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px) saturate(1.24);
  -webkit-backdrop-filter: blur(20px) saturate(1.24);
}

.topline {
  position: sticky;
  top: 12px;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  padding: 10px 12px;
  border-radius: var(--radius-xl);
}

.brand-lockup {
  display: flex;
  align-items: center;
  min-width: 0;
  gap: 10px;
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  object-fit: cover;
  background: rgba(255,255,255,0.4);
  border: 1px solid var(--line);
}

.brand-mark-compact {
  background: #0a0b0d;
  padding: 6px;
}

.brand-lockup strong {
  display: block;
  font-family: var(--font-display);
  font-size: 21px;
  line-height: 1.05;
}

.brand-lockup small {
  display: block;
  color: var(--muted);
  font-size: 12px;
  margin-top: 3px;
}

.top-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  flex-wrap: wrap;
}

.icon-btn, .pill-btn, .primary-btn, .secondary-btn, .filter-btn {
  border: 1px solid var(--line);
  color: var(--ink);
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, opacity 180ms ease;
}

.icon-btn:hover, .pill-btn:hover, .primary-btn:hover, .secondary-btn:hover, .filter-btn:hover {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--accent), transparent 45%);
}

.icon-btn {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: rgba(255,255,255,0.28);
}

.sun-icon {
  width: 18px;
  height: 18px;
  border: 2px solid var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 6px color-mix(in srgb, var(--accent), transparent 82%);
}

.pill-btn, .points-pill, .primary-btn, .secondary-btn, .filter-btn {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 14px;
  border-radius: 999px;
  white-space: nowrap;
}

.points-pill {
  background: color-mix(in srgb, var(--accent-3), transparent 28%);
  border: 1px solid color-mix(in srgb, var(--accent), transparent 66%);
}

.points-pill span {
  color: var(--muted);
  font-size: 12px;
}

.points-pill strong { font-size: 16px; }

.pill-btn, .secondary-btn, .filter-btn {
  background: rgba(255,255,255,0.24);
}

.primary-btn {
  background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent), #000 18%));
  color: color-mix(in srgb, var(--accent-3), white 40%);
  border-color: transparent;
  font-weight: 720;
}

[data-theme="light"] .primary-btn { color: #ffffff; }

.secondary-btn {
  color: var(--ink);
  font-weight: 650;
}

.vote-ribbon {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 14px;
  padding: 12px 14px 12px 18px;
  border-radius: var(--radius-lg);
}

.vote-ribbon strong { display: block; }
.vote-ribbon span { color: var(--muted); font-size: 13px; }

.dashboard-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 16px;
  margin-top: 16px;
}

.library-column {
  min-width: 0;
}

.hero-panel {
  min-height: 190px;
  border-radius: var(--radius-xl);
  padding: clamp(18px, 3vw, 28px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(250px, 340px);
  gap: 18px;
  align-items: end;
  align-content: space-between;
  position: relative;
  overflow: hidden;
}

.hero-panel::after {
  content: "";
  position: absolute;
  right: -90px;
  bottom: -150px;
  width: 300px;
  height: 300px;
  border-radius: 46% 54% 52% 48%;
  border: 1px solid color-mix(in srgb, var(--accent), transparent 72%);
  background: radial-gradient(circle at 30% 30%, color-mix(in srgb, var(--accent-2), transparent 44%), transparent 64%);
}

.eyebrow {
  color: var(--accent);
  font-weight: 760;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 12px;
  margin: 0 0 10px;
}

h1, h2, h3, p { margin-top: 0; }

.hero-copy h1 {
  max-width: 650px;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(30px, 4.6vw, 54px);
  line-height: 1.02;
  letter-spacing: 0;
}

.score-board {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  position: relative;
  z-index: 1;
}

.score-board div {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.23);
}

.score-board span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.score-board strong {
  display: block;
  margin-top: 5px;
  font-size: 24px;
}

.side-stack {
  display: grid;
  gap: 16px;
}

.side-card {
  border-radius: var(--radius-xl);
  padding: 20px;
}

.side-card h2 {
  font-family: var(--font-display);
  margin-bottom: 10px;
}

.side-card p, .side-card small {
  color: var(--muted);
  line-height: 1.68;
}

.side-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.upload-disabled {
  display: grid;
  place-items: center;
  min-height: 80px;
  margin: 14px 0 10px;
  border-radius: var(--radius-md);
  border: 1px dashed color-mix(in srgb, var(--accent), transparent 48%);
  color: var(--muted);
  background: rgba(255,255,255,0.18);
  cursor: not-allowed;
}

.upload-disabled input { display: none; }

.library-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 14px;
  margin: 16px 0 14px;
}

.library-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 44px);
}

.library-tools {
  display: flex;
  gap: 8px;
}

.filter-btn.is-active {
  background: color-mix(in srgb, var(--accent-3), transparent 28%);
  border-color: color-mix(in srgb, var(--accent), transparent 52%);
}

.book-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.book-card {
  min-height: 278px;
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-xl);
  padding: 18px;
  overflow: hidden;
  cursor: pointer;
}

.book-top, .book-stats, .book-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.book-top {
  justify-content: space-between;
  margin-bottom: 16px;
}

.book-topic, .book-stats span {
  min-height: 30px;
  display: inline-flex;
  align-items: center;
  padding: 0 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent-3), transparent 38%);
  color: color-mix(in srgb, var(--accent), var(--ink) 20%);
  font-size: 12px;
  font-weight: 700;
}

.favorite-btn {
  width: 38px;
  height: 38px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.22);
  cursor: pointer;
  position: relative;
}

.favorite-btn::before {
  content: "";
  position: absolute;
  inset: 10px 9px 8px;
  background: var(--muted);
  clip-path: polygon(50% 0%, 62% 33%, 98% 35%, 70% 57%, 79% 92%, 50% 72%, 21% 92%, 30% 57%, 2% 35%, 38% 33%);
}

.favorite-btn.is-favorite::before { background: var(--accent); }

.book-card h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 24px;
  line-height: 1.18;
}

.book-meta {
  color: var(--muted);
  line-height: 1.62;
  margin-bottom: 16px;
}

.book-stats {
  margin-top: auto;
  flex-wrap: wrap;
}

.book-actions {
  margin-top: 14px;
  flex-wrap: wrap;
}

.book-actions .primary-btn, .book-actions .secondary-btn {
  flex: 1 1 120px;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 22px;
  z-index: 50;
  transform: translate(-50%, 24px);
  opacity: 0;
  max-width: min(520px, calc(100% - 28px));
  padding: 12px 16px;
  border-radius: 999px;
  color: var(--ink);
  background: var(--glass-strong);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

.share-modal[hidden] {
  display: none;
}

.share-modal {
  position: fixed;
  inset: 0;
  z-index: 70;
  display: grid;
  place-items: center;
  padding: 18px;
}

.share-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(3, 10, 7, 0.42);
  backdrop-filter: blur(10px);
}

.share-dialog {
  position: relative;
  width: min(620px, 100%);
  border-radius: var(--radius-xl);
  padding: 18px;
  animation: share-pop 180ms ease-out;
}

@keyframes share-pop {
  from { transform: translateY(10px) scale(0.98); opacity: 0; }
  to { transform: translateY(0) scale(1); opacity: 1; }
}

.share-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  background: rgba(255,255,255,0.25);
  cursor: pointer;
  font-size: 22px;
  line-height: 1;
}

.share-preview {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 16px;
  align-items: center;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background:
    radial-gradient(260px 160px at 92% 20%, color-mix(in srgb, var(--accent-3), transparent 32%), transparent 68%),
    rgba(255,255,255,0.24);
}

.share-preview img {
  width: 100%;
  aspect-ratio: 1200 / 630;
  object-fit: cover;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.35);
}

.share-preview h2 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(28px, 5vw, 46px);
  line-height: 1;
}

.share-preview p:last-child {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.share-link-field {
  display: grid;
  gap: 8px;
  margin-top: 14px;
}

.share-link-field span {
  color: var(--muted);
  font-size: 13px;
}

.share-link-field input {
  min-height: 46px;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0 14px;
  color: var(--ink);
  background: rgba(255,255,255,0.26);
  outline: none;
}

.share-dialog-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.share-dialog-actions .primary-btn,
.share-dialog-actions .secondary-btn {
  flex: 1 1 160px;
}

.trae-badge {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 45;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 8px 12px;
  border-radius: 999px;
  color: #ecfff4;
  background: rgba(10, 11, 13, 0.78);
  border: 1px solid rgba(50, 240, 140, 0.42);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.26);
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  font-size: 13px;
  font-weight: 760;
}

.trae-badge:hover {
  transform: translateY(-1px);
}

.trae-badge-mark {
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  color: #0a0b0d;
  background: #32f08c;
}

.admin-shell { max-width: 940px; }

.admin-grid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.admin-card {
  border-radius: var(--radius-xl);
  padding: clamp(22px, 5vw, 46px);
}

.admin-card h1 {
  font-family: var(--font-display);
  font-size: clamp(34px, 6vw, 62px);
  line-height: 1;
  margin-bottom: 14px;
}

.admin-card p {
  max-width: 660px;
  color: var(--muted);
  line-height: 1.7;
}

.admin-form {
  display: flex;
  align-items: end;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 20px;
}

.admin-form label {
  flex: 1 1 260px;
  display: grid;
  gap: 8px;
}

.admin-form span {
  color: var(--muted);
  font-size: 13px;
}

.admin-form input {
  width: 100%;
  min-height: 46px;
  border-radius: 999px;
  border: 1px solid var(--line);
  padding: 0 16px;
  color: var(--ink);
  background: rgba(255,255,255,0.32);
  outline: none;
}

.review-empty {
  width: min(240px, 100%);
  aspect-ratio: 1.4;
  display: grid;
  place-items: center;
  margin-top: 24px;
  border-radius: var(--radius-xl);
  border: 1px dashed color-mix(in srgb, var(--accent), transparent 48%);
  background: rgba(255,255,255,0.18);
}

.review-empty span {
  font-size: 58px;
  font-family: var(--font-display);
  line-height: 1;
}

.review-empty strong {
  margin-top: -20px;
  color: var(--muted);
}

@media (max-width: 980px) {
  .dashboard-grid { grid-template-columns: 1fr; }
  .hero-panel { grid-template-columns: 1fr; }
  .score-board { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .side-stack { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .book-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 720px) {
  .site-shell { width: min(100% - 18px, var(--maxw)); margin-top: 9px; }
  .topline { align-items: flex-start; border-radius: 22px; }
  .brand-lockup small { max-width: 130px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .vote-ribbon { align-items: stretch; flex-direction: column; }
  .vote-ribbon .primary-btn { width: 100%; }
  .hero-panel { min-height: 0; }
  .score-board { grid-template-columns: 1fr; }
  .side-stack, .book-grid { grid-template-columns: 1fr; }
  .library-head { align-items: stretch; flex-direction: column; }
  .library-tools { width: 100%; }
  .filter-btn { flex: 1; }
  .book-actions { flex-direction: column; }
  .book-actions .primary-btn, .book-actions .secondary-btn { width: 100%; flex: none; }
  .share-preview { grid-template-columns: 1fr; }
  .share-preview img { max-height: 190px; }
  .trae-badge { right: 10px; bottom: 10px; }
}

@media (max-width: 430px) {
  .topline { position: static; }
  .top-actions { width: 100%; justify-content: space-between; }
  .points-pill { flex: 1; }
  .hero-copy h1 { font-size: 36px; }
}