:root {
  --bg: #f6f1e7;
  --paper: #fffdf8;
  --ink: #1d1b16;
  --muted: #6b655a;
  --line: #e2d9c6;
  --accent: #0f5c4d;
  --accent-ink: #ffffff;
  --mark: #fff0b8;
  --mark-line: #d9a400;
  --shadow: 0 1px 2px rgba(40, 30, 10, .08), 0 8px 24px rgba(40, 30, 10, .06);
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15130f;
    --paper: #1e1b15;
    --ink: #f1ece0;
    --muted: #a39b8a;
    --line: #342f25;
    --accent: #4fc3a9;
    --accent-ink: #0b1f1a;
    --mark: #4a3d0a;
    --mark-line: #e3b72a;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px rgba(0, 0, 0, .3);
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.55 var(--sans);
}
.wrap { width: min(1100px, 100% - 32px); margin-inline: auto; }

/* Header */
.top { border-bottom: 1px solid var(--line); background: var(--paper); }
.top .wrap { padding: 28px 0 22px; }
.brand h1 { font: 700 clamp(30px, 6vw, 46px)/1.05 var(--serif); margin: 0 0 6px; letter-spacing: -.02em; }
.brand h1 em { color: var(--accent); font-style: italic; }
.brand p { margin: 0 0 20px; color: var(--muted); max-width: 52ch; }
.controls { display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-end; }
.controls label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
.controls .grow { flex: 1 1 220px; }
select, input[type="search"], input[type="text"] {
  font: inherit; color: var(--ink); background: var(--bg);
  border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; min-height: 44px; min-width: 0;
}
select { min-width: 210px; }
select:focus, input:focus, .btn:focus-visible, .term:focus-visible, .card button:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px;
}
.btn {
  font: 600 15px var(--sans); min-height: 44px; padding: 0 18px; border-radius: 10px; cursor: pointer;
  border: 1px solid var(--line); background: var(--paper); color: var(--ink); text-decoration: none;
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
}
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn.small { min-height: 38px; padding: 0 14px; font-size: 14px; }

/* List */
.status { color: var(--muted); font-size: 14px; margin: 18px 0 10px; min-height: 1.5em; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); padding-bottom: 40px; }
.card {
  background: var(--paper); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow);
  display: flex; flex-direction: column; overflow: hidden;
}
.card img { width: 100%; aspect-ratio: 16/9; object-fit: cover; background: var(--line); }
.card .in { padding: 14px 16px 16px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.meta { font-size: 12.5px; color: var(--muted); display: flex; gap: 8px; flex-wrap: wrap; }
.meta b { color: var(--accent); font-weight: 600; }
.card h2 { font: 650 19px/1.25 var(--serif); margin: 0; }
.card p { margin: 0; color: var(--muted); font-size: 14.5px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.card .btn { margin-top: auto; align-self: flex-start; }
.skel { height: 250px; border-radius: 14px; background: linear-gradient(90deg, var(--line), var(--paper), var(--line)); background-size: 200% 100%; animation: sh 1.3s infinite linear; }
@keyframes sh { to { background-position: -200% 0; } }
.empty { grid-column: 1 / -1; background: var(--paper); border: 1px dashed var(--line); border-radius: 14px; padding: 24px; color: var(--muted); }

/* Reader */
.overlay { position: fixed; inset: 0; background: rgba(0,0,0,.45); z-index: 20; }
.reader {
  position: fixed; z-index: 30; top: 0; right: 0; bottom: 0; width: min(720px, 100%);
  background: var(--paper); border-left: 1px solid var(--line); box-shadow: var(--shadow);
  display: flex; flex-direction: column;
}
.reader[hidden], .overlay[hidden], .pop[hidden], .selbtn[hidden] { display: none; }
.reader-bar { display: flex; justify-content: space-between; gap: 8px; padding: 12px 16px; border-bottom: 1px solid var(--line); }
.reader-body { overflow-y: auto; padding: 22px clamp(16px, 4vw, 34px) 28px; flex: 1; }
.reader-body h2 { font: 700 clamp(24px, 4.5vw, 32px)/1.15 var(--serif); margin: 0 0 8px; letter-spacing: -.01em; }
.reader-body .meta { margin-bottom: 18px; }
.summary { background: var(--bg); border-left: 4px solid var(--accent); border-radius: 8px; padding: 14px 16px; margin: 0 0 20px; font-size: 18px; line-height: 1.55; }
.label { font: 700 12px var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--accent); margin: 0 0 6px; }
.story p { font: 19px/1.7 var(--serif); margin: 0 0 16px; }
.note { font-size: 13.5px; color: var(--muted); background: var(--bg); border-radius: 8px; padding: 10px 12px; margin: 0 0 18px; }
.err { color: #b3261e; background: color-mix(in srgb, #b3261e 10%, transparent); border-radius: 8px; padding: 12px 14px; }
@media (prefers-color-scheme: dark) { .err { color: #ffb4ab; } }
.term {
  font: inherit; color: inherit; background: var(--mark); border: 0; border-bottom: 2px solid var(--mark-line);
  padding: 0 2px; margin: 0; cursor: help; border-radius: 3px;
}
.term:hover { filter: brightness(.95); }
.glossary { margin-top: 26px; border-top: 1px solid var(--line); padding-top: 16px; }
.glossary dt { font-weight: 700; margin-top: 10px; }
.glossary dd { margin: 2px 0 0; color: var(--muted); }
.ask { display: flex; gap: 8px; padding: 12px 16px; border-top: 1px solid var(--line); background: var(--paper); }
.ask input { flex: 1; }
.paste textarea {
  width: 100%; min-height: 220px; font: 16px/1.5 var(--sans); color: var(--ink); background: var(--bg);
  border: 1px solid var(--line); border-radius: 10px; padding: 12px; resize: vertical; margin: 10px 0;
}

/* Popover + selection button */
.pop {
  position: fixed; z-index: 50; width: min(340px, calc(100vw - 24px)); background: var(--paper); color: var(--ink);
  border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); padding: 14px 16px; font-size: 15px;
}
.pop h3 { font: 700 17px var(--serif); margin: 0 0 6px; }
.pop p { margin: 0 0 8px; }
.pop small { color: var(--muted); }
.pop .row { display: flex; gap: 8px; margin-top: 8px; }
.selbtn {
  position: fixed; z-index: 60; background: var(--accent); color: var(--accent-ink); border: 0; border-radius: 999px;
  padding: 8px 14px; font: 600 14px var(--sans); box-shadow: var(--shadow); cursor: pointer;
}
.foot { color: var(--muted); font-size: 13px; padding: 10px 0 40px; }
@media (max-width: 560px) {
  .controls .btn, select { width: 100%; }
  .story p { font-size: 18px; }
}
@media (prefers-reduced-motion: reduce) { .skel { animation: none; } }