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

:root {
  --font-serif: "Source Han Serif SC", "思源宋体", "Source Han Serif CN", "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --font-sans: var(--font-serif);
  --wood-frame: #7a5228;
  --wood-outer: #8e6030;
  --wood-plank: #a06e38;
  --wood-shelf: #b87e45;
  --wood-edge: #5a3a18;
  --wood-back: #ddd0ba;
  --accent-warm: #c8943e;
  --accent: #6f5b45;
  --bg: #f7f3f0;
  --bg-paper: #ebe5df;
  --ink: #2c2416;
  --ink-soft: #6b6155;
  --ink-hint: #968b7e;
  --border: rgba(94, 80, 63, 0.12);
  --border-strong: rgba(94, 80, 63, 0.2);
  --works-content-width: 1200px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-serif);
  -webkit-font-smoothing: antialiased;
  background: var(--bg);
  background-image: radial-gradient(ellipse 80% 45% at 50% 0%, rgba(200, 148, 62, 0.1) 0%, transparent 65%);
  min-height: 100vh;
  display: flex;
  overflow-x: hidden;
  color: var(--ink);
}

button,
a {
  font: inherit;
}

.hidden {
  display: none !important;
}

.main {
  margin-left: var(--app-sidebar-width, 82px);
  flex: 1;
  padding: 44px 48px 56px;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
}

.page-title-block {
  width: min(100%, var(--works-content-width));
  margin-bottom: 32px;
}

.page-title {
  font-size: 28px;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: 0.02em;
  line-height: 1.2;
}

.page-sub {
  font-size: 13px;
  color: var(--ink-hint);
  margin-top: 6px;
  letter-spacing: 0.02em;
  font-weight: 300;
  font-family: var(--font-sans);
}

.works-message {
  width: min(100%, var(--works-content-width));
  margin: 0 0 18px;
  padding: 10px 14px;
  border: 0.5px solid rgba(200, 148, 62, 0.34);
  border-radius: 8px;
  background: rgba(200, 148, 62, 0.08);
  color: var(--ink-soft);
  font-family: var(--font-sans);
  font-size: 13px;
}

.works-message.is-error {
  border-color: rgba(184, 90, 70, 0.38);
  background: rgba(184, 90, 70, 0.1);
  color: #8f3f2e;
}

.bookcase {
  position: relative;
  width: min(100%, var(--works-content-width));
  border-radius: 6px 6px 0 0;
  background: var(--wood-frame);
  background-image:
    repeating-linear-gradient(91deg, transparent 0, transparent 34px, rgba(255, 255, 255, 0.04) 34px, rgba(255, 255, 255, 0.04) 35px),
    repeating-linear-gradient(180deg, transparent 0, transparent 80px, rgba(0, 0, 0, 0.05) 80px, rgba(0, 0, 0, 0.05) 81px);
  padding: 18px 22px 0;
  box-shadow:
    0 0 0 4px rgba(255, 255, 255, 0.08) inset,
    inset 0 -3px 0 var(--wood-edge),
    0 12px 40px rgba(100, 60, 20, 0.2),
    0 4px 12px rgba(100, 60, 20, 0.12);
  overflow: visible;
}

.bookcase::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 18px;
  background: linear-gradient(180deg, #c28845 0%, #8e6030 100%);
  border-bottom: 1.5px solid var(--wood-edge);
  box-shadow: 0 2px 6px rgba(80, 40, 10, 0.25) inset;
  z-index: 10;
}

.shelf-row {
  position: relative;
  min-height: 308px;
  border-left: 22px solid var(--wood-outer);
  border-right: 22px solid var(--wood-outer);
  background: var(--wood-back);
  background-image: repeating-linear-gradient(90deg, transparent 0, transparent 200px, rgba(94, 80, 63, 0.04) 200px, rgba(94, 80, 63, 0.04) 201px);
  padding: 22px 0 28px;
  overflow: visible;
}

.shelf-row::before,
.shelf-row::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 22px;
  pointer-events: none;
}

.shelf-row::before {
  left: -22px;
  background: linear-gradient(90deg, rgba(80, 40, 10, 0.22) 0%, rgba(200, 140, 60, 0.08) 100%);
}

.shelf-row::after {
  right: -22px;
  background: linear-gradient(270deg, rgba(80, 40, 10, 0.2) 0%, rgba(200, 140, 60, 0.06) 100%);
}

.shelf-row + .shelf-row {
  border-top: 4px solid var(--wood-frame);
  background: #ddd0ba;
}

.books {
  display: flex;
  align-items: flex-end;
  gap: 14px;
  padding: 0 20px;
  min-height: 250px;
}

.shelf-plank {
  position: absolute;
  bottom: 0;
  left: -22px;
  right: -22px;
  height: 28px;
  background:
    repeating-linear-gradient(90deg, transparent 0, transparent 55px, rgba(255, 255, 255, 0.06) 55px, rgba(255, 255, 255, 0.06) 57px, transparent 57px, transparent 80px, rgba(0, 0, 0, 0.03) 80px, rgba(0, 0, 0, 0.03) 81px),
    repeating-linear-gradient(88deg, transparent 0, transparent 160px, rgba(200, 150, 80, 0.06) 160px, rgba(200, 150, 80, 0.06) 162px),
    linear-gradient(180deg, #c28845 0%, #a87038 18%, #8a5828 55%, #6b4018 85%, #4e2e0e 100%);
  box-shadow: 0 4px 14px rgba(80, 40, 10, 0.3), 0 2px 0 var(--wood-edge);
  z-index: 5;
}

.shelf-plank::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent 0%, rgba(255, 240, 200, 0.55) 15%, rgba(255, 245, 210, 0.75) 50%, rgba(255, 240, 200, 0.55) 85%, transparent 100%);
}

.shelf-plank::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.45) 100%);
}

.book {
  position: relative;
  cursor: pointer;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  transform-origin: bottom center;
  flex-shrink: 0;
}

.book:hover,
.book:focus-visible {
  transform: translateY(-26px) rotate(-1.2deg);
  z-index: 1000;
  outline: none;
}

.book:hover .book-cover,
.book:focus-visible .book-cover {
  box-shadow: 5px 0 22px rgba(0, 0, 0, 0.35), -2px 0 8px rgba(0, 0, 0, 0.18), 0 14px 44px rgba(0, 0, 0, 0.28);
}

.book-inner {
  display: flex;
  height: 100%;
  filter: drop-shadow(2px 6px 12px rgba(80, 40, 10, 0.3));
}

.book-spine {
  width: 22px;
  height: 100%;
  border-radius: 2px 0 0 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  writing-mode: vertical-rl;
  font-size: 10px;
  letter-spacing: 0.1em;
  font-weight: 500;
  position: relative;
  flex-shrink: 0;
  overflow: hidden;
  background: var(--bs, #5a3a18);
  color: var(--bt, #f0e8da);
}

.book-spine::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 2px 0 0 2px;
  background: linear-gradient(90deg, rgba(0, 0, 0, 0.38) 0%, rgba(0, 0, 0, 0.1) 45%, rgba(255, 255, 255, 0.07) 100%);
  pointer-events: none;
}

.book-cover {
  flex: 1;
  border-radius: 0 3px 3px 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 18px 14px 16px;
  position: relative;
  overflow: hidden;
  background: var(--bc, #7a5228);
  color: var(--bt, #f0e8da);
  box-shadow: 3px 0 14px rgba(0, 0, 0, 0.28), -1px 0 4px rgba(0, 0, 0, 0.12);
  transition: box-shadow 0.3s ease;
}

.book-cover::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(155deg, transparent 0, transparent 6px, rgba(0, 0, 0, 0.025) 6px, rgba(0, 0, 0, 0.025) 7px);
  pointer-events: none;
  border-radius: inherit;
}

.book-cover::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 45%;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.09) 0%, transparent 100%);
  pointer-events: none;
  border-radius: 0 3px 0 0;
}

.book-top-tag,
.book-title,
.book-author {
  position: relative;
  z-index: 1;
}

.book-top-tag {
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 500;
  opacity: 0.6;
  font-family: var(--font-sans);
}

.book-title {
  display: block;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0.05em;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.25);
}

.book-author {
  display: block;
  margin-top: 8px;
  font-size: 11px;
  letter-spacing: 0.06em;
  opacity: 0.55;
  font-weight: 300;
}

.book-tooltip {
  position: absolute;
  bottom: calc(100% + 16px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  white-space: nowrap;
  background: rgba(44, 36, 22, 0.92);
  border: 0.5px solid rgba(111, 91, 69, 0.3);
  color: rgba(247, 243, 240, 0.95);
  font-size: 12px;
  font-family: var(--font-sans);
  padding: 6px 16px;
  border-radius: 999px;
  letter-spacing: 0.04em;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 1001;
}

.book:hover .book-tooltip,
.book:focus-visible .book-tooltip {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.book-actions {
  position: absolute;
  left: 50%;
  bottom: -36px;
  z-index: 25;
  display: flex;
  gap: 6px;
  opacity: 0;
  pointer-events: none;
  transform: translateX(-50%);
  transition: opacity 0.18s ease;
}

.book:hover .book-actions,
.book:focus-within .book-actions {
  opacity: 1;
  pointer-events: auto;
}

.book-action {
  height: 26px;
  min-width: 42px;
  padding: 0 10px;
  border: 0.5px solid rgba(111, 91, 69, 0.3);
  border-radius: 999px;
  background: rgba(44, 36, 22, 0.92);
  color: rgba(247, 243, 240, 0.92);
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 11px;
}

.book-action:hover {
  color: #fff;
  background: rgba(90, 70, 50, 0.98);
}

.book-new {
  width: 130px;
  height: 210px;
  border: 1.5px dashed rgba(111, 91, 69, 0.28);
  border-radius: 3px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  cursor: pointer;
  transition: all 0.25s ease;
  background: rgba(111, 91, 69, 0.04);
  flex-shrink: 0;
  align-self: flex-end;
  color: var(--ink-hint);
}

.book-new:hover,
.book-new:focus-visible {
  border-color: var(--accent);
  background: rgba(111, 91, 69, 0.08);
  transform: translateY(-8px);
  outline: none;
}

.book-new-icon {
  width: 34px;
  height: 34px;
  border: 1.5px solid rgba(111, 91, 69, 0.35);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--ink-hint);
  transition: all 0.25s ease;
}

.book-new:hover .book-new-icon {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(111, 91, 69, 0.08);
}

.book-new-label {
  font-size: 12px;
  color: var(--ink-hint);
  letter-spacing: 0.06em;
  font-weight: 400;
  transition: color 0.25s ease;
  font-family: var(--font-sans);
}

.book-new:hover .book-new-label {
  color: var(--accent);
}

.bookcase-foot {
  margin: 0 -22px;
  height: 24px;
  background: linear-gradient(180deg, #8a5828 0%, #6b4018 55%, #4e2e0e 100%);
  border-top: 1.5px solid rgba(200, 150, 80, 0.2);
  box-shadow: 0 1px 0 rgba(255, 230, 160, 0.25) inset, 0 6px 24px rgba(100, 60, 20, 0.3);
}

.floor-shadow {
  width: min(calc(100% - 80px), calc(var(--works-content-width) - 80px));
  height: 18px;
  background: radial-gradient(ellipse 75% 100% at 50% 0%, rgba(100, 60, 20, 0.22) 0%, transparent 100%);
  margin: 0 40px;
}

/* .bc-teal { --bc: #3a8275; --bs: #286058; --bt: rgba(230, 252, 248, 0.95); }
.bc-burg { --bc: #a83850; --bs: #782535; --bt: rgba(255, 230, 235, 0.95); }
.bc-plum { --bc: #6e3a8a; --bs: #4c2860; --bt: rgba(245, 225, 255, 0.95); }
.bc-slate { --bc: #3a5e9a; --bs: #284275; --bt: rgba(220, 235, 255, 0.95); }
.bc-forest { --bc: #35714a; --bs: #234e32; --bt: rgba(215, 248, 228, 0.95); }
.bc-terra { --bc: #ac4a2a; --bs: #7a3318; --bt: rgba(255, 235, 222, 0.95); }
.bc-ochre { --bc: #a87020; --bs: #785010; --bt: rgba(255, 246, 208, 0.95); }
.bc-rose { --bc: #a03a60; --bs: #702845; --bt: rgba(255, 222, 235, 0.95); }
.bc-navy { --bc: #28487a; --bs: #183260; --bt: rgba(215, 228, 255, 0.95); }
.bc-moss { --bc: #527035; --bs: #384e22; --bt: rgba(228, 248, 210, 0.95); } */
.bc-teal { --bc: #ECCE8E; --bs: #D59B3E; --bt: rgba(255, 255, 255, 0.95); }
.bc-plum { --bc: #8DB8D8; --bs: #4D74A1; --bt: rgba(255, 255, 255, 0.95); }
.bc-slate { --bc: #DFC6B4; --bs: #C89E7F; --bt: rgba(255, 255, 255, 0.95); }
.bc-forest { --bc: #98CDBB; --bs: #64B096; --bt: rgba(255, 255, 255, 0.95); }
.bc-burg { --bc: #E7B7BA; --bs: #C98690; --bt: rgba(255, 255, 255, 0.95); }
.bc-terra { --bc: #BCD3E6; --bs: #A6BFDC; --bt: rgba(255, 255, 255, 0.95); }

@media (max-width: 760px) {
  body {
    font-size: 12px;
  }

  .main {
    padding: 30px 18px 42px;
  }

  .page-title {
    font-size: 22px;
  }

  .page-sub,
  .works-message {
    font-size: 11px;
  }

  .book-title {
    font-size: 15px;
  }

  .book-top-tag,
  .book-spine,
  .book-author,
  .book-tooltip,
  .book-action,
  .book-new-label {
    font-size: 10px;
  }

  .bookcase {
    padding-left: 12px;
    padding-right: 12px;
  }

  .shelf-row {
    border-left-width: 12px;
    border-right-width: 12px;
  }

  .shelf-row::before,
  .shelf-row::after {
    width: 12px;
  }

  .shelf-row::before {
    left: -12px;
  }

  .shelf-row::after {
    right: -12px;
  }

  .books {
    padding: 0 12px;
    overflow-x: auto;
  }
}