/* ==========================================================================
   library.css — Library screen: top bar, filters, continue-reading rail,
   grid of covers, action sheet, toast, empty state, FAB.
   ========================================================================== */
.lib{
  height:100%; display:flex; flex-direction:column;
  background:
    radial-gradient(ellipse 900px 500px at 15% -10%, rgba(226,67,43,0.09), transparent 60%),
    radial-gradient(ellipse 700px 500px at 100% 0%, rgba(92,111,168,0.10), transparent 55%),
    var(--ink-0);
  animation: fadeIn var(--dur-slow) var(--ease-out) both;
}
.lib-top{ padding: calc(18px + var(--safe-top)) 20px 14px 20px; display:flex; flex-direction:column; gap:14px; flex-shrink:0; }
.lib-brand{ display:flex; align-items:baseline; justify-content:space-between; }
.lib-brand h1{ font-family:var(--font-display); font-weight:700; font-size:26px; margin:0; letter-spacing:.5px; display:flex; align-items:baseline; gap:8px; }
.lib-brand h1 .glyph{ color:var(--accent); font-size:20px; display:inline-block; animation:glyphBreathe 3.2s var(--ease-in-out) infinite; }
.lib-count{ font-size:12px; color:var(--paper-faint); font-weight:600; transition:opacity var(--dur-base); }
.lib-search-row{ display:flex; gap:8px; }
.lib-search{
  flex:1; background:var(--ink-2); border:1px solid var(--ink-4); border-radius:var(--radius-m);
  padding:11px 14px; color:var(--paper); font-size:14px; font-family:inherit;
  transition:border-color var(--dur-fast), background var(--dur-fast);
}
.lib-search:focus{ border-color:var(--ink-4); background:var(--ink-3); }
.lib-search::placeholder{ color:var(--paper-faint); }

.icon-btn{
  width:42px; height:42px; border-radius:var(--radius-m); background:var(--ink-2);
  border:1px solid var(--ink-4); color:var(--paper); display:flex; align-items:center; justify-content:center;
  flex-shrink:0; transition:background var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-spring), border-color var(--dur-fast);
}
.icon-btn:active{ transform:scale(.90); }
.icon-btn.accent{ background:var(--accent); border-color:var(--accent); color:var(--accent-ink); }
.icon-btn.accent:active{ transform:scale(.88) rotate(-6deg); }

.chips{ display:flex; gap:8px; overflow-x:auto; padding-bottom:2px; }
.chip{
  flex-shrink:0; padding:7px 14px; border-radius:100px; background:var(--ink-2);
  border:1px solid var(--ink-4); color:var(--paper-dim); font-size:12.5px; font-weight:600;
  transition:background var(--dur-fast) var(--ease-out), color var(--dur-fast), border-color var(--dur-fast), transform var(--dur-fast) var(--ease-spring);
  white-space:nowrap;
}
.chip:active{ transform:scale(.94); }
.chip.active{ background:var(--paper); color:var(--ink-0); border-color:var(--paper); }

.lib-scroll{ flex:1; overflow-y:auto; padding:6px 20px calc(28px + var(--safe-bottom)) 20px; scroll-behavior:smooth; }
.section-label{ font-size:12px; font-weight:700; letter-spacing:1.2px; text-transform:uppercase; color:var(--paper-faint); margin:18px 2px 10px 2px; display:flex; align-items:center; gap:8px; animation:railIn var(--dur-base) var(--ease-out) both; }
.section-label .glyph{ color:var(--accent); }
.sort-select{ background:var(--ink-2); color:var(--paper-dim); border:1px solid var(--ink-4); border-radius:8px; font-size:11.5px; padding:5px 8px; transition:border-color var(--dur-fast); }

.continue-row{ display:flex; gap:12px; overflow-x:auto; padding:2px 2px 10px 2px; margin:0 -2px; }
.continue-card{
  flex-shrink:0; width:150px; border-radius:var(--radius-m); overflow:hidden; position:relative;
  background:var(--ink-2); border:1px solid var(--ink-3);
  animation: rowIn var(--dur-base) var(--ease-out) both;
  transition: transform var(--dur-fast) var(--ease-spring);
}
.continue-card:active{ transform:scale(.96); }
.continue-card img{ width:100%; height:200px; object-fit:cover; display:block; background:var(--ink-3); }
.continue-info{ padding:9px 10px 10px; }
.continue-info .t{ font-size:12.5px; font-weight:600; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.progress-track{ height:3px; background:var(--ink-4); border-radius:3px; margin-top:6px; overflow:hidden; }
.progress-fill{ height:100%; background:var(--accent); border-radius:3px; transition:width var(--dur-slow) var(--ease-out); }

.grid{ display:grid; grid-template-columns:repeat(auto-fill, minmax(128px,1fr)); gap:16px 14px; }
.card{
  position:relative; border-radius:var(--radius-m); overflow:hidden; cursor:pointer;
  background:linear-gradient(160deg, var(--ink-3), var(--ink-2));
  box-shadow: 0 1px 0 rgba(255,255,255,0.03) inset, 0 10px 20px -12px rgba(0,0,0,.7), 3px 3px 0 -2px var(--ink-4), 6px 6px 0 -4px var(--ink-3);
  transition: transform var(--dur-fast) var(--ease-spring), box-shadow var(--dur-base);
  animation: cardIn var(--dur-base) var(--ease-out) both;
  animation-delay: calc(var(--i, 0) * 28ms);
}
.card:active{ transform:scale(.95); }
.card.removing{ animation: cardOut var(--dur-base) var(--ease-in-out) forwards; pointer-events:none; }
.card .cover-wrap{ position:relative; aspect-ratio:2/3; background:var(--ink-3); overflow:hidden; }
.card img{ width:100%; height:100%; object-fit:cover; display:block; }
.card .no-cover{ width:100%; height:100%; display:flex; align-items:center; justify-content:center; font-family:var(--font-display); font-size:34px; color:var(--ink-4); }
.stamp{
  position:absolute; top:8px; right:8px; width:30px; height:30px; border-radius:50%;
  background:var(--accent); color:var(--accent-ink); font-size:10px; font-weight:800; display:flex; align-items:center; justify-content:center;
  border:2px solid rgba(255,255,255,.15); box-shadow:0 3px 8px rgba(0,0,0,.4); line-height:1;
}
.fav-badge{ position:absolute; top:8px; left:8px; width:26px; height:26px; border-radius:50%; background:rgba(8,8,10,.55); backdrop-filter:blur(6px); display:flex; align-items:center; justify-content:center; color:var(--accent); animation:scaleFadeIn var(--dur-fast) var(--ease-spring) both; }
.card .fmt-badge{ position:absolute; bottom:8px; left:8px; font-size:9.5px; font-weight:800; letter-spacing:.5px; padding:2px 7px; border-radius:5px; background:rgba(8,8,10,.65); backdrop-filter:blur(6px); color:var(--paper-dim); }
.card .cprog{ position:absolute; left:0; bottom:0; height:3px; width:100%; background:rgba(0,0,0,.4); }
.card .cprog i{ display:block; height:100%; background:var(--accent); transition:width var(--dur-slow) var(--ease-out); }
.card .meta{ padding:9px 10px 11px; }
.card .meta .t{ font-size:13px; font-weight:600; line-height:1.25; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
.card .meta .s{ font-size:11px; color:var(--paper-faint); margin-top:4px; }
.card-menu-btn{ position:absolute; bottom:6px; right:6px; width:30px; height:30px; background:rgba(8,8,10,.55); backdrop-filter:blur(6px); border:none; border-radius:50%; display:flex; align-items:center; justify-content:center; transition:background var(--dur-fast), transform var(--dur-fast) var(--ease-spring); }
.card-menu-btn:active{ transform:scale(.85); background:rgba(8,8,10,.8); }

.import-row{
  display:flex; align-items:center; gap:10px; font-size:12.5px; color:var(--paper-faint);
  padding:6px 2px 0 2px; animation:railIn var(--dur-base) var(--ease-out) both;
}
.import-skel{ width:26px; height:36px; border-radius:4px; background:linear-gradient(90deg, var(--ink-2) 25%, var(--ink-3) 50%, var(--ink-2) 75%); background-size:200% 100%; animation:shimmer 1.3s linear infinite; flex-shrink:0; }

.empty-state{ display:flex; flex-direction:column; align-items:center; text-align:center; padding:60px 24px; color:var(--paper-faint); gap:10px; animation:scaleFadeIn var(--dur-slow) var(--ease-out) both; }
.empty-state .glyph{ font-size:40px; font-family:var(--font-display); color:var(--ink-4); animation:glyphBreathe 3.2s var(--ease-in-out) infinite; }
.empty-state h3{ color:var(--paper-dim); font-size:16px; margin:2px 0 0 0; }
.empty-state p{ font-size:13px; max-width:280px; line-height:1.5; margin:0; }
.empty-state button{ margin-top:8px; background:var(--accent); color:var(--accent-ink); border:none; padding:11px 22px; border-radius:100px; font-weight:700; font-size:13.5px; transition:transform var(--dur-fast) var(--ease-spring); }
.empty-state button:active{ transform:scale(.94); }

.no-results{ color:var(--paper-faint); font-size:13px; padding:20px 4px; animation:fadeIn var(--dur-base) both; }

.fab{
  position:fixed; right:calc(20px + var(--safe-right)); bottom:calc(24px + var(--safe-bottom)); width:58px; height:58px; border-radius:50%;
  background:var(--accent); color:var(--accent-ink); border:none; display:flex; align-items:center; justify-content:center;
  box-shadow:0 10px 26px -8px rgba(226,67,43,.6); z-index:20;
  animation: scaleFadeIn var(--dur-slow) var(--ease-spring) both;
  transition: transform var(--dur-fast) var(--ease-spring);
}
.fab:active{ transform:scale(.88) rotate(90deg); }

/* toast */
.toast{
  position:fixed; left:50%; bottom:calc(28px + var(--safe-bottom)); transform:translateX(-50%);
  background:var(--ink-3); border:1px solid var(--ink-4); color:var(--paper); padding:11px 18px;
  border-radius:100px; font-size:13px; z-index:100; box-shadow:0 10px 30px rgba(0,0,0,.5);
  display:flex; align-items:center; gap:8px;
  animation: toastIn var(--dur-base) var(--ease-spring) both;
}
.toast.leaving{ animation: toastOut var(--dur-fast) var(--ease-in-out) forwards; }

/* action sheet */
.sheet-backdrop{ position:fixed; inset:0; background:rgba(0,0,0,.55); backdrop-filter:blur(3px); z-index:60; animation:backdropIn var(--dur-base) var(--ease-out) both; }
.sheet-backdrop.leaving{ animation:backdropOut var(--dur-fast) var(--ease-in-out) forwards; }
.sheet{
  position:fixed; left:0; right:0; bottom:0; background:var(--ink-2); border-top:1px solid var(--ink-4);
  border-radius:20px 20px 0 0; z-index:61; padding:10px 8px calc(14px + var(--safe-bottom)) 8px;
  animation: sheetUp var(--dur-base) var(--ease-spring) both;
}
.sheet.leaving{ animation: sheetDown var(--dur-fast) var(--ease-in-out) forwards; }
.sheet .handle{ width:36px; height:4px; background:var(--ink-4); border-radius:4px; margin:6px auto 10px auto; }
.sheet .row{ display:flex; align-items:center; gap:14px; padding:14px 16px; border-radius:12px; transition:background var(--dur-fast); }
.sheet .row:active{ background:var(--ink-3); }
.sheet .row.danger{ color:var(--accent); }
.sheet .title{ padding:4px 16px 10px 16px; font-weight:700; font-size:14px; color:var(--paper-dim); border-bottom:1px solid var(--ink-3); margin-bottom:4px; }
.heart-pop{ animation: heartPop var(--dur-base) var(--ease-spring); }

@media (min-width: 860px){
  .grid{ grid-template-columns:repeat(auto-fill, minmax(150px,1fr)); }
}