/* =========================================================
   Bookshelf page (books.html) — builds on style.css tokens
   ========================================================= */

/* The logo's "charged" ring belongs to the home page's bolt cursor */
.page-books .brand__mark::before { display: none; }

/* ---------- hero ---------- */
.shelf-hero { padding: 48px 0 0; }
.back-link {
  display: flex; width: fit-content; align-items: center; gap: 8px; margin-bottom: 28px;
  font-size: 14px; font-weight: 500; color: var(--text-muted); transition: color .2s;
}
.back-link svg { font-size: 16px; transition: transform .2s var(--ease); }
.back-link:hover { color: var(--accent-text); }
@media (hover: hover) and (pointer: fine) { .back-link:hover svg { transform: translateX(-3px); } }
.shelf-hero__title { font-size: clamp(40px, 6vw, 64px); font-weight: 700; letter-spacing: -0.035em; }
.shelf-hero__lede { margin-top: 16px; max-width: 600px; font-size: 18px; color: var(--text-muted); }
.shelf-hero__facts { margin-top: 12px; max-width: 600px; font-size: 15.5px; color: var(--text-muted); }
.shelf-hero__facts strong { color: var(--text); font-weight: 600; font-variant-numeric: tabular-nums; }
/* the page opens with a short staggered rise, like the home hero */
.js .shelf-hero .reveal { animation: rise .6s var(--ease-out) both; }
.js .shelf-hero .reveal:nth-child(3) { animation-delay: .05s; }
.js .shelf-hero .reveal:nth-child(4) { animation-delay: .1s; }
.js .shelf-hero .reveal:nth-child(5) { animation-delay: .15s; }
.js .shelf-hero .reveal:nth-child(6) { animation-delay: .2s; }

/* ---------- currently reading ---------- */
.now-reading { margin-top: 40px; display: grid; gap: 16px; }
.now-reading[hidden] { display: none; }
.now-book {
  position: relative; overflow: hidden;
  display: grid; grid-template-columns: 112px 1fr; gap: 32px; align-items: center;
  padding: 28px 32px 32px; border-radius: 16px;
  background: var(--surface); border: 1px solid var(--border-strong);
}
.now-book__cover { position: relative; isolation: isolate; perspective: 800px; padding: 0 8px 14px 0; }
.now-book__cover .book3d { transform: rotateY(-20deg) rotateX(3deg); animation: now-float 5s ease-in-out infinite; }
@media (hover: hover) and (pointer: fine) { .now-book:hover .now-book__cover .book3d { animation-play-state: paused; transform: rotateY(-6deg); } }
.now-book__ribbon {
  /* bookmark tail hanging out of the bottom of the book */
  position: absolute; z-index: -1; left: 58%; bottom: 0; width: 10px; height: 40px;
  background: linear-gradient(#eab308, var(--accent));
  clip-path: polygon(0 0, 100% 0, 100% 100%, 50% 80%, 0 100%);
  transform-origin: top center; animation: ribbon-sway 3.4s ease-in-out infinite;
}
.now-book__body { position: relative; }
.now-book__label { display: inline-flex; align-items: center; gap: 7px; font-weight: 600; color: var(--accent-text); }
.live-dot {
  width: 7px; height: 7px; border-radius: 50%; background: #22c55e;
  animation: live-pulse 1.8s ease-out infinite;
}
.now-book__title { font-size: clamp(26px, 3.4vw, 34px); font-weight: 700; letter-spacing: -0.02em; }
.now-book .book__meta { margin-top: 6px; }
.now-book__verdict { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; margin: 16px 0 12px; font-size: 14px; color: var(--text-muted); }
/* unrated: the bolts charge up one after another, on a loop */
.bolts--charging svg { animation: bolt-charge 2.6s ease-in-out infinite; animation-delay: calc(var(--i) * .22s); }
@keyframes bolt-charge {
  0%, 12% { fill: var(--border-strong); filter: none; }
  32%, 66% { fill: var(--accent); filter: drop-shadow(0 0 4px var(--glow)); }
  88%, 100% { fill: var(--border-strong); filter: none; }
}
@keyframes live-pulse { from { box-shadow: 0 0 0 0 rgba(34, 197, 94, .6); } to { box-shadow: 0 0 0 8px rgba(34, 197, 94, 0); } }
@keyframes ribbon-sway { 0%, 100% { rotate: -5deg; } 50% { rotate: 5deg; } }
@keyframes now-float { 0%, 100% { translate: 0 0; } 50% { translate: 0 -4px; } }

/* ---------- the shelf ---------- */
.shelf { margin-top: 12px; }
.shelf__row {
  display: flex; align-items: flex-end; gap: 4px;
  min-height: 250px; padding: 60px 16px 0; overflow-x: auto; overflow-y: hidden; overscroll-behavior-x: contain; /* headroom for the lift + tooltip */
  scrollbar-width: thin;
}
.shelf__plank {
  height: 14px; margin: 0 -4px; border-radius: 4px;
  background: linear-gradient(var(--border-strong), var(--border));
  box-shadow: 0 12px 24px -12px rgba(0, 0, 0, .6);
}
.shelf__hint { margin-top: 12px; font-size: 13.5px; color: var(--text-faint); }

.spine {
  --img: none;
  position: relative; flex: none; width: 34px; height: var(--sh); padding: 0;
  border: 0; border-radius: 3px 3px 1px 1px; overflow: visible;
  background:
    linear-gradient(90deg, rgba(0,0,0,.45), rgba(255,255,255,.18) 22%, rgba(0,0,0,.05) 55%, rgba(0,0,0,.5)),
    linear-gradient(90deg, transparent 22%, rgba(8,8,10,.62) 22% 78%, transparent 78%), /* label band */
    var(--img) 18% center / auto 100% no-repeat,
    hsl(var(--h) 45% 32%);
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.25);
  transform-origin: bottom center;
  transition: transform .3s var(--ease), filter .3s;
}
.spine::before, .spine::after {
  /* gilded bands across the spine */
  content: ""; position: absolute; left: 4px; right: 4px; height: 2px; border-radius: 1px;
  background: rgba(250, 204, 21, .7);
}
.spine::before { top: 8px; }
.spine::after { bottom: 8px; }
.spine__title {
  position: absolute; inset: 18px 0; display: block;
  writing-mode: vertical-rl; transform: rotate(180deg); /* reads bottom to top, like a real spine */
  font: 600 10.5px/34px var(--font-display); letter-spacing: .04em; color: #fff; text-align: center;
  text-shadow: 0 1px 2px rgba(0,0,0,.8);
  overflow: hidden; white-space: nowrap; text-overflow: ellipsis;
}
.spine__tip {
  position: absolute; left: 50%; bottom: calc(100% + 10px); translate: -50% 4px;
  padding: 6px 10px; border-radius: 8px; white-space: nowrap; pointer-events: none;
  font: 500 12.5px/1 var(--font-sans); color: var(--text);
  background: var(--bg-elev); border: 1px solid var(--border-strong); box-shadow: var(--shadow);
  opacity: 0; transition: opacity .2s, translate .2s var(--ease);
}
.spine:nth-child(7n + 3) { transform: rotate(-1.5deg); }
.spine:focus-visible { transform: translateY(-14px); filter: brightness(1.15); z-index: 2; }
.spine:focus-visible .spine__tip { opacity: 1; translate: -50% 0; }
@media (hover: hover) and (pointer: fine) {
  .spine:hover { transform: translateY(-14px); filter: brightness(1.15); z-index: 2; }
  .spine:hover .spine__tip { opacity: 1; translate: -50% 0; }
}

/* ---------- controls ---------- */
.shelf-list { padding-top: 72px; padding-bottom: 96px; }
.shelf-controls { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 32px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  display: inline-flex; align-items: center; gap: 8px; height: 36px; padding: 0 14px; border-radius: 999px;
  border: 1px solid var(--border-strong); background: var(--bg-elev); color: var(--text-muted);
  font-size: 14px; font-weight: 500; user-select: none; -webkit-user-select: none;
  transition: border-color .2s, color .2s, background-color .2s, transform .16s var(--ease-out);
}
.chip:active { transform: scale(.97); }
.chip span { font: 500 12.5px/1 var(--font-mono); font-variant-numeric: tabular-nums; color: var(--text-faint); }
.chip:hover { border-color: var(--text-faint); color: var(--text); }
.chip.is-on { border-color: var(--accent); color: var(--text); background: var(--accent-soft); }
.chip .bolts svg { width: 12px; height: 12px; }
.sort { display: inline-flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-muted); }
.sort span { font: 600 12.5px/1.2 var(--font-sans); text-transform: uppercase; letter-spacing: .05em; color: var(--text-faint); }
.sort select {
  height: 36px; padding: 0 34px 0 12px; border-radius: 10px; font: inherit; color: var(--text);
  background: var(--bg-elev) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2371717a' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") no-repeat right 10px center / 16px;
  border: 1px solid var(--border-strong); appearance: none; cursor: pointer;
}
.sort select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }

/* ---------- bolt ratings ---------- */
.bolts { display: inline-flex; gap: 2px; vertical-align: middle; }
.bolts svg { width: 16px; height: 16px; fill: var(--border-strong); stroke: none; }
.bolts svg.is-on { fill: var(--accent); }

/* ---------- review cards ---------- */
.books { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.book {
  display: grid; grid-template-columns: 132px 1fr; gap: 24px; align-items: start;
  padding: 24px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--border);
  transition: border-color .3s, box-shadow .3s;
}
@media (hover: hover) and (pointer: fine) {
  .book:hover { border-color: var(--border-strong); box-shadow: var(--shadow); }
  .book:hover .book3d { transform: rotateY(-28deg) rotateX(4deg); }
}
.book.reveal { transition: opacity .5s var(--ease-out), transform .6s var(--ease-out), border-color .3s, box-shadow .3s; }
.book.is-flash { animation: book-flash 1.6s ease-out; }
@keyframes book-flash { 0%, 30% { border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); } }

/* 3D book: tilts on hover to show the page edges */
.book__cover { perspective: 900px; padding-right: 10px; }
.book3d {
  position: relative; transform-style: preserve-3d;
  transform: rotateY(0deg); transition: transform .6s var(--ease);
}
.book3d > img, .book3d > .cover-fallback {
  position: relative; display: block; width: 100%; height: auto; aspect-ratio: 2 / 3; object-fit: cover;
  border-radius: 2px 4px 4px 2px; transform: translateZ(7px);
  box-shadow: inset 4px 0 6px -3px rgba(0,0,0,.4);
  background: var(--surface-2);
}
.book3d::before {
  /* page edges */
  content: ""; position: absolute; top: 2%; bottom: 2%; left: calc(100% - 7px); width: 14px;
  background: repeating-linear-gradient(90deg, #f3eee2 0 1px, #d9d2c2 1px 2px);
  transform: rotateY(90deg);
}
.book3d::after {
  /* back cover */
  content: ""; position: absolute; inset: 0; border-radius: 2px 4px 4px 2px; transform: translateZ(-7px);
  background: #1c1c20; box-shadow: 10px 16px 24px -10px rgba(0,0,0,.6);
}

.cover-fallback {
  display: flex !important; flex-direction: column; justify-content: flex-end; gap: 4px; padding: 12px;
  background: linear-gradient(160deg, hsl(var(--h) 55% 38%), hsl(calc(var(--h) + 40) 50% 18%)) !important;
  color: #fff;
}
.cover-fallback svg { position: absolute; top: 12px; left: 12px; width: 22px; height: 22px; fill: var(--accent); stroke: none; }
.cover-fallback strong { font: 700 15px/1.15 var(--font-display); }
.cover-fallback small { font-size: 11px; opacity: .8; }

.book__series { margin-top: 4px; font-size: 14px; font-weight: 500; color: var(--accent-text); }
.book__title { font-size: 22px; font-weight: 600; line-height: 1.2; }
.book__meta { margin-top: 6px; font-size: 14px; color: var(--text-faint); }
.book__rating { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; margin-top: 12px; }
.book__read { font-size: 13.5px; color: var(--text-faint); }
.book__review { margin: 16px 0 0; }
.book__review p {
  font-size: 15px; line-height: 1.65; color: var(--text-muted);
  display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 5; line-clamp: 5; overflow: hidden;
}
.book.is-expanded .book__review p { -webkit-line-clamp: unset; line-clamp: unset; display: block; }
.book__actions { display: flex; align-items: center; gap: 16px; margin-top: 12px; }
.book__more {
  padding: 0; border: 0; background: none; font-size: 14px; font-weight: 600; color: var(--accent-text);
}
.book__more:hover { text-decoration: underline; text-underline-offset: 3px; }
.book__gr { display: inline-flex; align-items: center; gap: 3px; font-size: 13.5px; color: var(--text-faint); transition: color .2s; }
.book__gr svg { width: 13px; height: 13px; }
.book__gr:hover { color: var(--text); }
.book__review p { margin: 0; }

.shelf-source { margin-top: 40px; font-size: 13px; color: var(--text-faint); }
.shelf-source a { color: var(--text-muted); text-decoration: underline; text-underline-offset: 3px; }

@media (max-width: 960px) {
  .books { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .shelf-hero { padding-top: 28px; }
  .shelf__row { min-height: 190px; padding: 20px 8px 0; }
  .book { grid-template-columns: 92px 1fr; gap: 16px; padding: 18px; }
  .book__title { font-size: 19px; }
  .cover-fallback { padding: 9px; }
  .cover-fallback svg { top: 8px; left: 8px; width: 16px; height: 16px; }
  .cover-fallback strong { font-size: 12.5px; }
  .cover-fallback small { font-size: 10px; }
  .shelf-controls { flex-direction: column; align-items: stretch; }
  .sort select { font-size: 16px; } /* no iOS focus zoom */
  .now-book { grid-template-columns: 84px 1fr; gap: 18px; padding: 20px 18px 22px; }
  .now-book__title { font-size: 24px; }
}