:root {
  --bg: #f4f6fa;
  --panel: #ffffff;
  --panel-2: #f0f3f8;
  --text: #1b2330;
  --muted: #647089;
  --border: #dde3ec;
  --accent: #2f6df0;
  --accent-soft: #e6efff;
  --good: #1f9d57;
  --good-soft: #e4f6ec;
  --warn: #d98a0b;
  --warn-soft: #fcf2dd;
  --bad: #d23b3b;
  --bad-soft: #fbe6e6;
  --shadow: 0 1px 3px rgba(20, 30, 50, .08), 0 6px 24px rgba(20, 30, 50, .06);
  --radius: 14px;
}
[data-theme="dark"] {
  --bg: #0f1420;
  --panel: #171e2c;
  --panel-2: #1e2738;
  --text: #e8edf6;
  --muted: #94a1b8;
  --border: #2a3447;
  --accent: #5b8cff;
  --accent-soft: #1c2a45;
  --good: #38c172;
  --good-soft: #16301f;
  --warn: #e8a93a;
  --warn-soft: #322611;
  --bad: #f0666a;
  --bad-soft: #331a1c;
  --shadow: 0 1px 3px rgba(0, 0, 0, .3), 0 8px 30px rgba(0, 0, 0, .35);
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.5;
}

/* ---------- ogrodje ---------- */
.app { display: grid; grid-template-columns: 320px 1fr; height: 100vh; }
.sidebar {
  background: var(--panel);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  padding: 18px 16px 60px;
}
.main {
  overflow-y: auto;
  padding: 28px clamp(16px, 5vw, 64px);
  display: flex;
  flex-direction: column;
  align-items: center;
}
.main-inner { width: 100%; max-width: 760px; }

/* ---------- glava ---------- */
.brand { display: flex; align-items: center; gap: 10px; margin-bottom: 4px; }
.brand h1 { font-size: 17px; margin: 0; font-weight: 700; }
.brand .sub { color: var(--muted); font-size: 12.5px; }
.statline { color: var(--muted); font-size: 12px; margin: 2px 0 16px; }

/* ---------- gumbi ---------- */
.btn {
  font: inherit; cursor: pointer; border: 1px solid var(--border);
  background: var(--panel-2); color: var(--text);
  padding: 9px 14px; border-radius: 10px; transition: .12s;
  display: inline-flex; align-items: center; gap: 7px;
}
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); color: #fff; border-color: var(--accent); font-weight: 600; }
.btn.primary:hover { filter: brightness(1.07); }
.btn.block { width: 100%; justify-content: center; }
.btn.sm { padding: 6px 10px; font-size: 13px; border-radius: 8px; }
.iconbtn {
  border: 1px solid var(--border); background: var(--panel-2); color: var(--text);
  width: 38px; height: 38px; border-radius: 10px; cursor: pointer; font-size: 16px;
}

.toolbar { display: flex; gap: 8px; margin-bottom: 14px; flex-wrap: wrap; }

/* ---------- iskanje & filtri ---------- */
.search { width: 100%; padding: 10px 12px; border: 1px solid var(--border);
  border-radius: 10px; background: var(--panel-2); color: var(--text); font: inherit; }
.search:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }

.section-label { font-size: 11px; text-transform: uppercase; letter-spacing: .06em;
  color: var(--muted); font-weight: 700; margin: 18px 0 8px; }

.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  font-size: 12.5px; padding: 5px 10px; border-radius: 999px; cursor: pointer;
  border: 1px solid var(--border); background: var(--panel-2); color: var(--muted);
  user-select: none; transition: .12s;
}
.chip.on { background: var(--accent-soft); color: var(--accent); border-color: var(--accent); font-weight: 600; }

.modebtns { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }

/* ---------- drevo ---------- */
.tree { margin-top: 6px; }
.tree details { margin: 2px 0; }
.tree summary {
  cursor: pointer; padding: 6px 8px; border-radius: 8px; list-style: none;
  display: flex; align-items: center; gap: 8px; font-size: 13.5px;
}
.tree summary::-webkit-details-marker { display: none; }
.tree summary:hover { background: var(--panel-2); }
.tree .caret { transition: .15s; color: var(--muted); font-size: 11px; }
.tree details[open] > summary .caret { transform: rotate(90deg); }
.tree .part-title { font-weight: 700; }
.tree .leaf {
  cursor: pointer; padding: 5px 8px 5px 26px; border-radius: 8px; font-size: 13px;
  display: flex; justify-content: space-between; gap: 8px; color: var(--text);
}
.tree .leaf:hover { background: var(--accent-soft); }
.tree .leaf.active { background: var(--accent); color: #fff; }
.tree .num { color: var(--muted); font-variant-numeric: tabular-nums; }
.tree .leaf.active .num { color: #d8e4ff; }
.qcount { font-size: 11px; color: var(--muted); background: var(--panel-2);
  border-radius: 999px; padding: 1px 7px; min-width: 22px; text-align: center; }
.leaf.active .qcount { background: rgba(255,255,255,.22); color: #fff; }

/* ---------- kartica vprašanja ---------- */
.deckbar { display: flex; align-items: center; justify-content: space-between;
  gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.deck-title { font-weight: 700; font-size: 15px; }
.progress { flex: 1; min-width: 140px; height: 8px; background: var(--panel-2);
  border-radius: 999px; overflow: hidden; }
.progress > span { display: block; height: 100%; background: var(--accent); width: 0; transition: .25s; }
.counter { color: var(--muted); font-size: 13px; font-variant-numeric: tabular-nums; }

.card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 26px; }
.crumb { color: var(--muted); font-size: 12.5px; margin-bottom: 10px;
  display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.badge { font-size: 11px; padding: 2px 9px; border-radius: 999px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .03em; }
.badge.definicija { background: var(--accent-soft); color: var(--accent); }
.badge.razlikovanje { background: var(--warn-soft); color: var(--warn); }
.badge.nastevanje { background: var(--good-soft); color: var(--good); }
.badge.uporaba { background: var(--bad-soft); color: var(--bad); }

.q-text { font-size: 21px; font-weight: 650; margin: 6px 0 20px; line-height: 1.35; }

.answer { border-top: 1px dashed var(--border); padding-top: 18px; margin-top: 6px;
  animation: fade .2s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; } }
.answer ul { margin: 0; padding-left: 4px; list-style: none; }
.answer li { padding: 6px 0 6px 26px; position: relative; }
.answer li::before { content: "✓"; position: absolute; left: 0; top: 6px;
  color: var(--good); font-weight: 700; }

.assess { display: flex; gap: 10px; margin-top: 20px; flex-wrap: wrap; }
.assess .btn { flex: 1; justify-content: center; min-width: 110px; font-weight: 600; }
.assess .znal { color: var(--good); border-color: var(--good); }
.assess .znal:hover, .assess .znal.pick { background: var(--good); color: #fff; }
.assess .delno { color: var(--warn); border-color: var(--warn); }
.assess .delno:hover, .assess .delno.pick { background: var(--warn); color: #fff; }
.assess .nisem { color: var(--bad); border-color: var(--bad); }
.assess .nisem:hover, .assess .nisem.pick { background: var(--bad); color: #fff; }

/* ---------- primeri ---------- */
.examples { margin-top: 18px; display: flex; flex-direction: column; gap: 12px; }
.example { background: var(--panel-2); border: 1px solid var(--border);
  border-left: 4px solid var(--accent); border-radius: 10px; padding: 14px 16px; }
.example .ex-head { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; flex-wrap: wrap; }
.ex-kind { font-size: 11px; font-weight: 700; padding: 2px 9px; border-radius: 999px;
  background: var(--accent-soft); color: var(--accent); }
.ex-summary { font-size: 14.5px; }
.ex-src { font-size: 12.5px; margin-top: 8px; }
.ex-src a { color: var(--accent); }
.ex-pending { font-size: 11px; color: var(--muted); }

/* ---------- vir (besedilo iz knjige) ---------- */
.source { margin-top: 16px; border: 1px solid var(--border); border-radius: 10px;
  background: var(--panel-2); overflow: hidden; animation: fade .2s ease; }
.src-head { padding: 11px 16px; font-weight: 700; font-size: 13.5px;
  background: var(--accent-soft); color: var(--accent);
  border-bottom: 1px solid var(--border); }
.src-body { padding: 16px 18px; max-height: 46vh; overflow-y: auto;
  white-space: pre-wrap; line-height: 1.7; font-size: 15px;
  text-align: justify; hyphens: auto; }
.src-note { padding: 8px 16px 12px; font-size: 11.5px; color: var(--muted);
  border-top: 1px dashed var(--border); }
.src-loading { padding: 16px 18px; color: var(--muted); font-size: 14px; }

.cardnav { display: flex; justify-content: space-between; align-items: center;
  margin-top: 18px; gap: 10px; }
.spacer { flex: 1; }

/* ---------- prazno / povzetek ---------- */
.empty, .summary { text-align: center; color: var(--muted); padding: 60px 20px; }
.empty h2, .summary h2 { color: var(--text); }
.summary .nums { display: flex; gap: 24px; justify-content: center; margin: 22px 0; flex-wrap: wrap; }
.summary .num-box { background: var(--panel); border: 1px solid var(--border);
  border-radius: 12px; padding: 16px 22px; min-width: 96px; }
.summary .num-box b { display: block; font-size: 28px; }
.summary .num-box.znal b { color: var(--good); }
.summary .num-box.delno b { color: var(--warn); }
.summary .num-box.nisem b { color: var(--bad); }

.hint { color: var(--muted); font-size: 12px; margin-top: 16px; text-align: center; }
kbd { background: var(--panel-2); border: 1px solid var(--border); border-bottom-width: 2px;
  border-radius: 5px; padding: 1px 6px; font-size: 11.5px; font-family: inherit; }

.mobile-bar { display: none; }

/* ---------- mobilno ---------- */
@media (max-width: 820px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { position: fixed; inset: 0 30% 0 0; z-index: 40; transform: translateX(-105%);
    transition: .2s; box-shadow: var(--shadow); width: 86%; max-width: 340px; }
  .sidebar.open { transform: none; }
  .scrim { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 30; }
  .scrim.show { display: block; }
  .mobile-bar { display: flex; align-items: center; gap: 12px; padding: 12px 16px;
    background: var(--panel); border-bottom: 1px solid var(--border);
    position: sticky; top: 0; z-index: 20; }
  .mobile-bar h1 { font-size: 15px; margin: 0; }
  .main { padding: 18px 14px 40px; }
  .q-text { font-size: 19px; }
  .card { padding: 18px; }
}