:root {
  --bg: #f6f7f2;
  --card: #ffffff;
  --text: #1f2a1d;
  --muted: #66705f;
  --line: #e3e7da;
  --accent: #3f8f3a;
  --accent-soft: #e4f2df;
  --l1: #3f8f3a;
  --l2: #c98a12;
  --l3: #b0413e;
  --right: #2f8a3b;
  --wrong: #c0392b;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(30, 40, 20, .06), 0 4px 14px rgba(30, 40, 20, .06);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141812; --card: #1d231a; --text: #e6ebe0; --muted: #9aa590; --line: #2e3729;
    --accent: #7cc46f; --accent-soft: #263522; --l1: #7cc46f; --l2: #e0ad45; --l3: #e0726d;
    --shadow: none;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
.wrap { max-width: 1280px; margin: 0 auto; padding: 0 16px; }

.top { padding: 20px 0 8px; }
.top-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
h1 { margin: 0; font-size: 28px; letter-spacing: -.5px; }
.sub { margin: 2px 0 0; color: var(--muted); }

.btn {
  border: 1px solid var(--line); background: var(--card); color: var(--text);
  border-radius: 999px; padding: 9px 16px; font: inherit; font-weight: 600; cursor: pointer;
}
.btn { white-space: nowrap; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.small { padding: 4px 10px; }
.btn.ghost { background: transparent; border-color: transparent; color: var(--muted); }

.filters {
  position: sticky; top: 0; z-index: 5;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  padding: 10px 0;
}
.filter-row { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; margin-bottom: 8px; }
#search {
  flex: 1 1 240px; max-width: 360px; padding: 8px 14px; font: inherit;
  border: 1px solid var(--line); border-radius: 999px; background: var(--card); color: var(--text);
}
#search:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  border: 1px solid var(--line); background: var(--card); color: var(--text);
  border-radius: 999px; padding: 4px 12px; font: inherit; font-size: 13.5px; cursor: pointer;
}
.chip small { color: var(--muted); margin-left: 2px; }
.chip.on { background: var(--accent-soft); border-color: var(--accent); font-weight: 600; }
.dots { letter-spacing: 1px; font-size: 11px; }
.chip.lvl1 .dots, .badge.lvl1 { color: var(--l1); }
.chip.lvl2 .dots, .badge.lvl2 { color: var(--l2); }
.chip.lvl3 .dots, .badge.lvl3 { color: var(--l3); }

.grid {
  display: grid; gap: 18px; padding: 18px 0 48px;
  grid-template-columns: repeat(auto-fill, minmax(min(300px, 100%), 1fr));
}
.card {
  background: var(--card); border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow); border: 1px solid var(--line);
}
.photos { display: grid; grid-template-columns: 1fr 1fr; gap: 2px; background: var(--line); }
.photos img { width: 100%; aspect-ratio: 1; object-fit: cover; display: block; background: var(--accent-soft); }
.photos img.broken { visibility: hidden; }
.body { padding: 12px 14px 14px; }
.body h2 { margin: 0; font-size: 18px; line-height: 1.25; }
.names { margin: 2px 0 6px; color: var(--muted); font-size: 13.5px; }
.names .en { color: var(--text); font-weight: 600; }
.badges { margin: 0 0 8px; display: flex; gap: 6px; }
.badge { font-size: 12px; padding: 1px 8px; border-radius: 999px; background: var(--accent-soft); }
.badge.lvl1, .badge.lvl2, .badge.lvl3 { letter-spacing: 1px; font-size: 10px; display: inline-flex; align-items: center; }
.desc { margin: 0; font-size: 14px; }
.facts { margin: 8px 0 0; padding-left: 18px; font-size: 13.5px; color: var(--muted); }
.facts li { margin-top: 3px; }
.facts li::marker { color: var(--accent); }
.empty { color: var(--muted); text-align: center; padding: 40px 0; }

/* quiz */
#quiz {
  width: min(560px, calc(100vw - 24px)); max-height: calc(100dvh - 24px);
  border: none; border-radius: 18px; padding: 16px; background: var(--card); color: var(--text);
  box-shadow: 0 20px 60px rgba(0, 0, 0, .3);
}
#quiz::backdrop { background: rgba(15, 20, 10, .55); }
.quiz-head { display: flex; align-items: center; gap: 8px; }
.quiz-head strong { font-size: 18px; margin-right: auto; }
.score { font-variant-numeric: tabular-nums; font-weight: 600; color: var(--accent); }
.quiz-scope { margin: 0 0 10px; color: var(--muted); font-size: 13px; }
#quiz-img {
  width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 12px; display: block;
  background: var(--accent-soft);
}
#quiz-img[hidden] { display: none; }
.quiz-options { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 12px; }
.option {
  text-align: left; padding: 10px 12px; border-radius: 12px; cursor: pointer; font: inherit;
  border: 1px solid var(--line); background: var(--bg); color: var(--text);
  display: flex; flex-direction: column;
}
.option span { color: var(--muted); font-size: 13px; }
.option:hover:not(:disabled) { border-color: var(--accent); }
.option:disabled { cursor: default; }
.option.right { border-color: var(--right); background: color-mix(in srgb, var(--right) 15%, var(--card)); }
.option.wrong { border-color: var(--wrong); background: color-mix(in srgb, var(--wrong) 15%, var(--card)); }
.quiz-reveal { margin-top: 12px; }
.quiz-reveal h3 { margin: 0; }
.verdict { margin: 0 0 4px; font-weight: 700; }
.verdict.ok { color: var(--right); }
.verdict.bad { color: var(--wrong); }
#quiz-next { margin-top: 12px; width: 100%; }

@media (max-width: 520px) {
  h1 { font-size: 22px; }
  .quiz-options { grid-template-columns: 1fr; }
  #search { max-width: none; }
  .filters .chips { flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; margin: 0 -16px; padding: 0 16px; }
  .filters .chips::-webkit-scrollbar { display: none; }
  .chip { white-space: nowrap; flex: none; }
  .filter-row { margin-bottom: 6px; gap: 6px; }
}