/* Writer – wygląd.
   Układ: panel zeszytów 268px | kolumna pisania (szerokość z ustawień) | opcjonalny panel Writer AI 380px. */
:root {
  --font-system: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-ui: var(--font-system);
  --font-body: var(--font-system);
  --font-head: var(--font-system);
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --fs: 16px;
  --fs-head-scale: 1;
  --lh: 1.65;
  --page-w: 760px;
  --ah: 222; --as: 76%;
  --bg: #ffffff;
  --bg-side: #f6f7f9;
  --bg-pop: #ffffff;
  --bg-sunk: #f3f4f7;
  --fg: #1b1f27;
  --fg-2: #586072;
  --fg-3: #959cab;
  --line: #e4e6eb;
  --line-2: #eef0f3;
  --hover: rgba(28, 40, 70, .06);
  --active: rgba(28, 40, 70, .10);
  --accent: hsl(var(--ah) var(--as) 52%);
  --accent-fg: #ffffff;
  --accent-soft: hsl(var(--ah) var(--as) 95%);
  --accent-text: hsl(var(--ah) var(--as) 42%);
  --mark: #ffec8f; --mark-green: #c9f2c7; --mark-blue: #cfe3ff; --mark-pink: #ffd3e6; --mark-orange: #ffdcb8;
  --tc-red: #d1343a; --tc-orange: #c96a12; --tc-green: #1f8a4c; --tc-blue: #2563d6; --tc-purple: #7c4fd0; --tc-gray: #7a8190;
  --c-info: #eef4ff; --c-info-b: #cfdcf8; --c-tip: #ecf8f0; --c-tip-b: #c8ead3; --c-warn: #fff6e6; --c-warn-b: #f5ddae; --c-danger: #fdeeee; --c-danger-b: #f3cccc; --c-note: #f4f4f6; --c-note-b: #e3e4e8;
  --code-bg: #f3f4f6; --code-fg: #c0365a;
  --flash-back: #f7f8fa;
  --danger: #d13a3d; --ok: #1e9a57; --warn: #c27c0e;
  --paper-line: rgba(70, 110, 190, .14);
  --shadow: 0 1px 2px rgba(15, 20, 35, .06), 0 10px 30px rgba(15, 20, 35, .13);
  --shadow-sm: 0 1px 2px rgba(15, 20, 35, .07), 0 2px 8px rgba(15, 20, 35, .06);
  --scrim: rgba(15, 18, 26, .36);
  --fmt-bg: #1d2129; --fmt-fg: #f1f3f7;
  --radius: 8px;
  --glass: rgba(255, 255, 255, .66);
  --glass-strong: rgba(252, 252, 253, .84);
  --glass-border: rgba(0, 0, 0, .07);
  --glass-hi: rgba(255, 255, 255, .95);
  --glass-shadow: 0 10px 34px rgba(20, 25, 40, .10), 0 1px 3px rgba(20, 25, 40, .07);
  --glass-blur: blur(28px) saturate(1.8);
  --sb-w: 256px; --sb-gap: 8px; --sb-space: calc(var(--sb-w) + var(--sb-gap) * 2); --ai-space: 0px; --top-h: 52px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]):not([data-theme="sepia"]) {
    --bg: #17181c; --bg-side: #1e1f24; --bg-pop: #25272d; --bg-sunk: #1f2126; --fg: #e6e8ed; --fg-2: #a4aab7; --fg-3: #6b7180;
    --line: #2d3037; --line-2: #24262c; --hover: rgba(255, 255, 255, .06); --active: rgba(255, 255, 255, .10);
    --accent: hsl(var(--ah) var(--as) 68%); --accent-fg: #0c1430; --accent-soft: hsl(var(--ah) 30% 20%); --accent-text: hsl(var(--ah) var(--as) 74%);
    --mark: #5b4c0f; --mark-green: #1f4a2b; --mark-blue: #1f3557; --mark-pink: #57233c; --mark-orange: #5a3618;
    --tc-red: #ff7b7f; --tc-orange: #ffad5c; --tc-green: #63d394; --tc-blue: #7aa8ff; --tc-purple: #b79bff; --tc-gray: #9aa0ad;
    --c-info: #1d2535; --c-info-b: #2c3a55; --c-tip: #1a2a21; --c-tip-b: #284434; --c-warn: #2c2416; --c-warn-b: #4a3a1c; --c-danger: #2f1c1d; --c-danger-b: #4d2a2c; --c-note: #222429; --c-note-b: #33363d;
    --code-bg: #23252b; --code-fg: #ff8fa8; --flash-back: #1c1e23;
    --danger: #ff6b6e; --ok: #4cc584; --warn: #f0b04a; --paper-line: rgba(140, 170, 230, .10);
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 12px 32px rgba(0, 0, 0, .5); --shadow-sm: 0 1px 3px rgba(0, 0, 0, .4); --scrim: rgba(0, 0, 0, .5);
    --fmt-bg: #30333b;
    --glass: rgba(44, 45, 51, .58); --glass-strong: rgba(38, 39, 45, .86); --glass-border: rgba(255, 255, 255, .09); --glass-hi: rgba(255, 255, 255, .07); --glass-shadow: 0 12px 36px rgba(0, 0, 0, .45), 0 1px 3px rgba(0, 0, 0, .35);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #17181c; --bg-side: #1e1f24; --bg-pop: #25272d; --bg-sunk: #1f2126; --fg: #e6e8ed; --fg-2: #a4aab7; --fg-3: #6b7180;
  --line: #2d3037; --line-2: #24262c; --hover: rgba(255, 255, 255, .06); --active: rgba(255, 255, 255, .10);
  --accent: hsl(var(--ah) var(--as) 68%); --accent-fg: #0c1430; --accent-soft: hsl(var(--ah) 30% 20%); --accent-text: hsl(var(--ah) var(--as) 74%);
  --mark: #5b4c0f; --mark-green: #1f4a2b; --mark-blue: #1f3557; --mark-pink: #57233c; --mark-orange: #5a3618;
  --tc-red: #ff7b7f; --tc-orange: #ffad5c; --tc-green: #63d394; --tc-blue: #7aa8ff; --tc-purple: #b79bff; --tc-gray: #9aa0ad;
  --c-info: #1d2535; --c-info-b: #2c3a55; --c-tip: #1a2a21; --c-tip-b: #284434; --c-warn: #2c2416; --c-warn-b: #4a3a1c; --c-danger: #2f1c1d; --c-danger-b: #4d2a2c; --c-note: #222429; --c-note-b: #33363d;
  --code-bg: #23252b; --code-fg: #ff8fa8; --flash-back: #1c1e23;
  --danger: #ff6b6e; --ok: #4cc584; --warn: #f0b04a; --paper-line: rgba(140, 170, 230, .10);
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 12px 32px rgba(0, 0, 0, .5); --shadow-sm: 0 1px 3px rgba(0, 0, 0, .4); --scrim: rgba(0, 0, 0, .5);
  --fmt-bg: #30333b;
  --glass: rgba(44, 45, 51, .58); --glass-strong: rgba(38, 39, 45, .86); --glass-border: rgba(255, 255, 255, .09); --glass-hi: rgba(255, 255, 255, .07); --glass-shadow: 0 12px 36px rgba(0, 0, 0, .45), 0 1px 3px rgba(0, 0, 0, .35);
  color-scheme: dark;
}
:root[data-theme="sepia"] {
  --bg: #f8f1e3; --bg-side: #f0e7d4; --bg-pop: #fbf6ea; --bg-sunk: #efe5d0; --fg: #3b3127; --fg-2: #6e5f4d; --fg-3: #a39279;
  --line: #e2d5bb; --line-2: #ebe0c9; --hover: rgba(90, 60, 20, .07); --active: rgba(90, 60, 20, .12);
  --code-bg: #efe4cc; --flash-back: #f2e9d6; --c-note: #efe6d3; --paper-line: rgba(120, 90, 40, .16);
  --c-info: #eae8e0; --c-tip: #e6efdc; --c-warn: #f6e7c6;
  --glass: rgba(252, 246, 232, .68); --glass-strong: rgba(250, 244, 230, .88); --glass-border: rgba(90, 60, 20, .10); --glass-hi: rgba(255, 252, 244, .9);
  color-scheme: light;
}
:root[data-accent="indigo"] { --ah: 238; --as: 62%; }
:root[data-accent="violet"] { --ah: 266; --as: 60%; }
:root[data-accent="pink"] { --ah: 330; --as: 66%; }
:root[data-accent="red"] { --ah: 2; --as: 70%; }
:root[data-accent="orange"] { --ah: 24; --as: 85%; }
:root[data-accent="green"] { --ah: 148; --as: 55%; }
:root[data-accent="teal"] { --ah: 182; --as: 70%; }
:root[data-accent="graphite"] { --ah: 220; --as: 9%; }

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { height: 100%; }
body {
  margin: 0; display: flex; overflow: hidden;
  background: var(--bg); color: var(--fg);
  font: 15px/1.5 var(--font-ui);
  -webkit-font-smoothing: antialiased;
  padding: env(safe-area-inset-top, 0px) env(safe-area-inset-right, 0px) 0 env(safe-area-inset-left, 0px);
}
button { font: inherit; color: inherit; }
input, select, textarea { font: inherit; color: inherit; }
kbd { font: 500 11px/1 var(--font-ui); color: var(--fg-3); border: 1px solid var(--line); border-radius: 4px; padding: 3px 5px; background: var(--bg); white-space: nowrap; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
svg { display: block; flex: none; }
.muted { color: var(--fg-3); font-size: 13px; }
.center { text-align: center; }
.row { display: flex; gap: 8px; align-items: center; }
.row.end { justify-content: flex-end; }
.spacer { flex: 1; }
.reduce-motion *, .reduce-motion *::before, .reduce-motion *::after { transition: none !important; animation: none !important; }

/* ---------- Przyciski i pola ---------- */
.icon-btn { width: 30px; height: 30px; display: grid; place-items: center; padding: 0; border: 0; border-radius: 6px; background: none; color: var(--fg-2); cursor: pointer; flex: none; }
.icon-btn:hover { background: var(--hover); color: var(--fg); }
.icon-btn.tiny { width: 22px; height: 22px; }
.icon-btn.on { color: #e3a008; }
.icon-btn.on svg path { fill: currentColor; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 7px 14px; border-radius: 8px; cursor: pointer; border: 1px solid var(--line); background: var(--bg); color: var(--fg); font-weight: 550; font-size: 14px; white-space: nowrap; }
.btn:hover { background: var(--hover); }
.btn.small { padding: 4px 10px; font-size: 13px; }
.btn.ghost { border-color: transparent; background: transparent; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-fg); }
.btn.primary:hover { filter: brightness(1.07); }
.btn.danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn.danger-ghost { color: var(--danger); }
.btn.wide { width: 100%; padding: 10px; }
.btn:disabled { opacity: .45; cursor: default; }
.btn.on { background: var(--accent-soft); color: var(--accent-text); border-color: transparent; }
.ghost-btn { border: 0; background: none; cursor: pointer; color: var(--fg-3); padding: 4px 8px; border-radius: 6px; font-size: 14px; display: inline-flex; align-items: center; gap: 6px; }
.ghost-btn:hover { background: var(--hover); color: var(--fg-2); }
.ghost-btn.tiny { font-size: 12px; padding: 2px 7px; }
.input { width: 100%; padding: 8px 11px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--fg); outline: none; }
.input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.input.mono { font-family: var(--font-mono); font-size: 14px; }
select.input { appearance: auto; }

/* ---------- Panel boczny ---------- */
#sidebar { width: 268px; flex: none; height: 100%; display: flex; flex-direction: column; background: var(--bg-side); border-right: 1px solid var(--line); font-size: 14px; user-select: none; -webkit-user-select: none; }
.sb-head { display: flex; align-items: center; justify-content: space-between; padding: 12px 10px 6px 12px; }
.brand { display: flex; align-items: center; gap: 9px; font-weight: 750; font-size: 15.5px; letter-spacing: -.01em; border: 0; background: none; cursor: pointer; padding: 4px 6px; border-radius: 7px; }
.brand:hover { background: var(--hover); }
.brand img { border-radius: 6px; }
.sb-actions { padding: 4px 0 6px; }
.sb-item { display: flex; align-items: center; gap: 9px; width: calc(100% - 16px); margin: 0 8px; padding: 5px 8px; border: 0; border-radius: 6px; background: none; cursor: pointer; color: var(--fg-2); font-weight: 500; text-align: left; }
.sb-item:hover { background: var(--hover); color: var(--fg); }
.sb-item > span:nth-child(2) { flex: 1; }
.sb-ic { width: 18px; display: grid; place-items: center; }
.ai-ic { color: var(--accent); }
.badge { font-size: 11px; color: var(--fg-3); font-variant-numeric: tabular-nums; }
.sb-scroll { flex: 1; overflow-y: auto; padding-bottom: 12px; }
.sb-section { margin-top: 10px; }
.sb-label { display: flex; align-items: center; justify-content: space-between; padding: 2px 10px 4px 16px; font-size: 11.5px; font-weight: 650; letter-spacing: .05em; text-transform: uppercase; color: var(--fg-3); }
.sb-foot { border-top: 1px solid var(--line); padding: 6px 0 calc(8px + env(safe-area-inset-bottom, 0px)); }
.account-chip { display: flex; align-items: center; gap: 10px; width: calc(100% - 16px); margin: 4px 8px 0; padding: 7px 8px; border: 0; border-radius: 8px; background: none; cursor: pointer; text-align: left; }
.account-chip:hover { background: var(--hover); }
.avatar { width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; flex: none; background: var(--accent); color: var(--accent-fg); font-weight: 700; font-size: 14px; }
.avatar.ghost { background: var(--active); color: var(--fg-2); }
.avatar.big { width: 56px; height: 56px; font-size: 24px; }
.acc-text { display: flex; flex-direction: column; min-width: 0; line-height: 1.3; }
.acc-text b { font-size: 13.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.acc-text small { font-size: 11.5px; color: var(--fg-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.tree-row { position: relative; display: flex; align-items: center; gap: 4px; margin: 0 8px; padding: 2px 6px 2px calc(4px + var(--d, 0) * 16px); border-radius: 6px; cursor: pointer; color: var(--fg-2); min-height: 30px; }
.tree-row:hover { background: var(--hover); color: var(--fg); }
.tree-row.active { background: var(--active); color: var(--fg); font-weight: 600; }
.tree-row.nb { color: var(--fg); font-weight: 550; }
.tw { width: 20px; height: 20px; display: grid; place-items: center; border: 0; background: none; border-radius: 4px; color: var(--fg-3); cursor: pointer; padding: 0; flex: none; }
.tw:hover { background: var(--active); color: var(--fg); }
.tw svg { transition: transform .15s; width: 14px; height: 14px; }
.tw.open svg { transform: rotate(90deg); }
.tw.empty { visibility: hidden; }
.t-icon { width: 20px; text-align: center; font-size: 15px; line-height: 1; flex: none; }
.nb-dot { width: 20px; height: 20px; border-radius: 5px; background: var(--nb); display: grid; place-items: center; font-size: 12px; flex: none; box-shadow: inset 3px 0 0 rgba(0, 0, 0, .18); }
.nb-sq { display: inline-grid; place-items: center; width: 18px; height: 18px; border-radius: 4px; background: var(--nb); font-size: 11px; vertical-align: -3px; box-shadow: inset 3px 0 0 rgba(0, 0, 0, .18); }
.nb-sq.big { width: 26px; height: 26px; font-size: 15px; border-radius: 6px; }
.t-title { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.t-count { font-size: 11.5px; color: var(--fg-3); font-variant-numeric: tabular-nums; }
.t-acts { display: none; gap: 2px; }
.tree-row:hover .t-acts, .tree-row.menu-open .t-acts { display: flex; }
.tree-row:hover .t-count { display: none; }
.t-acts button { width: 22px; height: 22px; display: grid; place-items: center; padding: 0; border: 0; border-radius: 4px; background: none; color: var(--fg-3); cursor: pointer; }
.t-acts button:hover { background: var(--active); color: var(--fg); }
.tree-row.drop-inside { box-shadow: inset 0 0 0 2px var(--accent); background: var(--accent-soft); }
.tree-row.drop-before::before, .tree-row.drop-after::after, .topic-row.drop-before::before, .topic-row.drop-after::after { content: ""; position: absolute; left: 6px; right: 6px; height: 2px; background: var(--accent); border-radius: 2px; }
.tree-row.drop-before::before, .topic-row.drop-before::before { top: -1px; }
.tree-row.drop-after::after, .topic-row.drop-after::after { bottom: -1px; }
.tree-empty { padding: 3px 16px 3px calc(36px + var(--d, 0) * 16px); color: var(--fg-3); font-size: 13px; }
#sb-scrim { display: none; position: fixed; inset: 0; background: var(--scrim); z-index: 39; }

/* ---------- Główna kolumna ---------- */
#main { flex: 1; min-width: 0; height: 100%; display: flex; flex-direction: column; position: relative; }
.topbar { flex: none; height: 48px; display: flex; align-items: center; gap: 8px; padding: 0 10px 0 12px; font-size: 14px; }
.crumbs { flex: 1; min-width: 0; display: flex; align-items: center; gap: 2px; overflow: hidden; white-space: nowrap; }
.crumbs button { display: inline-flex; align-items: center; gap: 6px; border: 0; background: none; cursor: pointer; padding: 3px 6px; border-radius: 5px; color: var(--fg-2); max-width: 240px; min-width: 0; }
.crumbs button span:last-child { overflow: hidden; text-overflow: ellipsis; }
.crumbs button:hover { background: var(--hover); color: var(--fg); }
.crumbs button:last-child { color: var(--fg); }
.crumbs .sep { color: var(--fg-3); line-height: 1; }
.top-right { display: flex; align-items: center; gap: 4px; flex: none; }
.words { color: var(--fg-3); font-size: 12.5px; font-variant-numeric: tabular-nums; white-space: nowrap; margin: 0 4px; }
.sync-pill { display: inline-flex; align-items: center; gap: 6px; border: 0; background: none; cursor: pointer; color: var(--fg-3); font-size: 12.5px; padding: 4px 8px; border-radius: 999px; white-space: nowrap; }
.sync-pill:hover { background: var(--hover); color: var(--fg-2); }
.sync-pill.ok svg { color: var(--ok); }
.sync-pill.warn { color: var(--warn); }
.sync-pill.err { color: var(--danger); }
.sync-pill.busy svg { animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.timer-btn { color: var(--fg-2); gap: 5px; font-variant-numeric: tabular-nums; padding: 4px 7px; }
.timer-btn.active { color: var(--accent-text); background: var(--accent-soft); }
.btn.study { border-color: transparent; background: var(--accent-soft); color: var(--accent-text); font-weight: 650; }
.btn.study .count { font-variant-numeric: tabular-nums; opacity: .8; }
#btn-sb-open { display: none; }
body.sb-hidden #btn-sb-open { display: grid; }
#btn-ai-top { color: var(--accent); }
.scroll { flex: 1; overflow-y: auto; overflow-x: hidden; }

/* ---------- Strona główna ---------- */
.home { max-width: 1040px; margin: 0 auto; padding: 36px 48px 80px; }
.home-head h1 { font-family: var(--font-head); font-size: 34px; font-weight: 750; letter-spacing: -.02em; margin: 2px 0 24px; text-wrap: balance; }
.eyebrow { margin: 0; color: var(--fg-3); font-size: 13px; letter-spacing: .04em; text-transform: uppercase; font-weight: 600; }
.home section { margin-bottom: 36px; }
.home h2 { font-size: 13px; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; color: var(--fg-3); margin: 0 0 12px; }
.sec-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.sec-head h2 { margin: 0; }
.recent-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; }
.recent { display: flex; flex-direction: column; gap: 4px; text-align: left; padding: 14px 16px; border: 1px solid var(--line); border-radius: 12px; background: var(--bg); cursor: pointer; position: relative; overflow: hidden; min-height: 132px; }
.recent::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px; background: var(--nb); }
.recent:hover { box-shadow: var(--shadow-sm); border-color: transparent; }
.recent-nb { font-size: 12px; color: var(--fg-3); font-weight: 600; }
.recent b { font-size: 15.5px; line-height: 1.3; }
.recent-snip { font-size: 13px; color: var(--fg-2); line-height: 1.4; flex: 1; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.recent-time { font-size: 12px; color: var(--fg-3); }
.recent i { font-style: normal; margin-right: 6px; }
.recent i:empty { display: none; }

.shelf { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 18px; }
.cover { position: relative; aspect-ratio: 3 / 4; max-width: 100%; border: 0; border-radius: 4px 12px 12px 4px; background: var(--nb); cursor: pointer; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px; padding: 18px 12px 18px 22px; box-shadow: 0 1px 2px rgba(0, 0, 0, .12), 0 6px 18px rgba(0, 0, 0, .10); transition: transform .15s; overflow: hidden; color: #1b1f27; }
.cover:hover { transform: translateY(-3px) rotate(-.6deg); }
.cover::after { content: ""; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(255, 255, 255, .22), rgba(255, 255, 255, 0) 45%, rgba(0, 0, 0, .08)); pointer-events: none; }
.cover-spine { position: absolute; left: 0; top: 0; bottom: 0; width: 12px; background: rgba(0, 0, 0, .22); }
.cover-spine::after { content: ""; position: absolute; left: 12px; top: 0; bottom: 0; width: 1px; background: rgba(255, 255, 255, .25); }
.cover-icon { font-size: 34px; line-height: 1; filter: drop-shadow(0 1px 1px rgba(0, 0, 0, .15)); }
.cover-label { background: #fffdf7; border-radius: 6px; padding: 8px 10px; width: 100%; text-align: center; display: flex; flex-direction: column; box-shadow: 0 1px 2px rgba(0, 0, 0, .15); }
.cover-label b { font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: #1b1f27; }
.cover-label small { font-size: 11.5px; color: #6b7280; }
.cover.new { background: transparent; border: 2px dashed var(--line); box-shadow: none; color: var(--fg-3); padding-left: 12px; }
.cover.new .cover-label { background: transparent; box-shadow: none; }
.cover.new .cover-label b { color: var(--fg-2); }
.cover.new svg { width: 30px; height: 30px; }
.cover.new::after { display: none; }
.cover.new:hover { border-color: var(--accent); color: var(--accent); transform: none; }

.todo-list { border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.todo-row { display: flex; align-items: center; gap: 10px; padding: 8px 14px; border-bottom: 1px solid var(--line-2); }
.todo-row:last-child { border-bottom: 0; }
.todo-row.done .todo-text { text-decoration: line-through; color: var(--fg-3); }
.todo-text { flex: 1; min-width: 0; }
.todo-src { border: 0; background: var(--bg-sunk); color: var(--fg-2); font-size: 12px; padding: 3px 9px; border-radius: 999px; cursor: pointer; max-width: 200px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.todo-src:hover { color: var(--fg); }

/* ---------- Widok zeszytu ---------- */
.nb-view { max-width: 960px; margin: 0 auto; padding: 0 40px 80px; }
.nb-hero { display: flex; gap: 22px; align-items: flex-end; flex-wrap: wrap; padding: 44px 0 26px; border-bottom: 1px solid var(--line); position: relative; }
.nb-hero::before { content: ""; position: absolute; left: -40px; right: -40px; top: 0; height: 6px; background: var(--nb); border-radius: 0 0 6px 6px; }
.nb-hero-icon { width: 92px; height: 120px; border-radius: 4px 10px 10px 4px; border: 0; background: var(--nb); font-size: 40px; cursor: pointer; box-shadow: inset 10px 0 0 rgba(0, 0, 0, .2), 0 6px 18px rgba(0, 0, 0, .12); flex: none; }
.nb-hero-text { flex: 1; min-width: 220px; }
.nb-hero h1 { font-family: var(--font-head); font-size: 34px; letter-spacing: -.02em; margin: 0; outline: none; font-weight: 750; }
.nb-desc { color: var(--fg-2); outline: none; margin-top: 2px; min-height: 1.4em; }
[data-ph]:empty::before { content: attr(data-ph); color: var(--fg-3); pointer-events: none; }
.nb-stats { margin-top: 10px; font-size: 13px; color: var(--fg-3); font-variant-numeric: tabular-nums; }
.nb-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.topics { padding-top: 10px; }
.topic-head { display: flex; justify-content: space-between; padding: 8px 12px; font-size: 12px; font-weight: 650; letter-spacing: .05em; text-transform: uppercase; color: var(--fg-3); }
.topic-row { position: relative; display: flex; align-items: center; gap: 10px; padding: 10px 12px 10px calc(12px + var(--d, 0) * 28px); border-radius: 10px; cursor: pointer; }
.topic-row:hover { background: var(--hover); }
.t-num { width: 28px; color: var(--fg-3); font-variant-numeric: tabular-nums; font-weight: 600; text-align: right; flex: none; }
.t-num.sub { font-weight: 400; }
.t-main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.t-main b { font-size: 15.5px; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.t-main small { color: var(--fg-3); font-size: 12.5px; }
.t-date { color: var(--fg-3); font-size: 13px; font-variant-numeric: tabular-nums; white-space: nowrap; }
.empty-topics { text-align: center; padding: 60px 20px; color: var(--fg-2); }

/* ---------- Temat ---------- */
.page { position: relative; max-width: calc(var(--page-w) + 104px); margin: 0 auto; padding: 40px 52px 0; }
:root[data-paper="lines"] .page, :root[data-paper="grid"] .page, :root[data-paper="dots"] .page { --pl: calc(var(--fs) * var(--lh)); }
:root[data-paper="lines"] #editor { background-image: linear-gradient(to bottom, transparent calc(var(--pl) - 1px), var(--paper-line) calc(var(--pl) - 1px)); background-size: 100% var(--pl); background-position: 0 3px; }
:root[data-paper="grid"] #editor { background-image: linear-gradient(to bottom, var(--paper-line) 1px, transparent 1px), linear-gradient(to right, var(--paper-line) 1px, transparent 1px); background-size: calc(var(--pl) / 2) calc(var(--pl) / 2); background-position: 0 3px; }
:root[data-paper="dots"] #editor { background-image: radial-gradient(circle, var(--paper-line) 1.2px, transparent 1.4px); background-size: calc(var(--pl) / 1.5) calc(var(--pl) / 1.5); }
.page-head { padding-left: 2px; }
.page-icon { border: 0; background: none; cursor: pointer; font-size: 60px; line-height: 1; padding: 6px; margin-left: -6px; border-radius: 10px; }
.page-icon:hover { background: var(--hover); }
.page-tools { height: 28px; display: flex; align-items: center; margin-left: -8px; opacity: 0; transition: opacity .15s; }
.page-head:hover .page-tools, .page-tools:focus-within { opacity: 1; }
.page-title { margin: 2px 0 8px; outline: none; font-family: var(--font-head); font-size: calc(2.4em * var(--fs-head-scale)); font-weight: 750; line-height: 1.15; letter-spacing: -.022em; text-wrap: balance; word-break: break-word; }
.page-title:empty::before { content: attr(data-ph); color: var(--fg-3); }
.page-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 6px 12px; font-size: 13px; color: var(--fg-2); margin-bottom: 22px; }
.nb-chip { display: inline-flex; align-items: center; gap: 6px; border: 0; cursor: pointer; padding: 3px 10px 3px 8px; border-radius: 999px; background: color-mix(in srgb, var(--nb) 16%, transparent); color: var(--fg); font-size: 13px; font-weight: 550; }
.nb-chip:hover { background: color-mix(in srgb, var(--nb) 26%, transparent); }
.date-chip { display: inline-flex; align-items: center; gap: 5px; color: var(--fg-2); }
.date-chip input { border: 0; background: none; color: inherit; font-size: 13px; padding: 2px 4px; border-radius: 5px; cursor: pointer; }
.date-chip input:hover { background: var(--hover); }

.templates { margin: 4px 0 18px; }
.tpl-label { font-size: 14px; color: var(--fg-3); margin-bottom: 8px; }
.tpl-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 8px; }
.tpl { display: flex; gap: 10px; align-items: flex-start; text-align: left; padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); cursor: pointer; }
.tpl:hover { background: var(--hover); border-color: transparent; }
.tpl-ic { font-size: 21px; line-height: 1.2; }
.tpl b { display: block; font-size: 14px; font-weight: 600; }
.tpl span span { font-size: 12.5px; color: var(--fg-2); line-height: 1.35; display: block; }

/* ---------- Bloki ---------- */
.editor { padding-bottom: 4px; font-family: var(--font-body); font-size: var(--fs); line-height: var(--lh); }
.block { position: relative; display: flex; border-radius: 4px; --gt: 3px; margin-left: calc(var(--ind, 0) * 1.7em); }
.block.dragging { opacity: .35; }
.block.flash-in { animation: flashin 1.6s ease-out; }
@keyframes flashin { 0% { background: var(--accent-soft); } 100% { background: transparent; } }
.gutter { position: absolute; left: -52px; top: var(--gt); width: 50px; display: flex; justify-content: flex-end; gap: 1px; opacity: 0; transition: opacity .12s; font-size: 15px; line-height: 1; }
.block:hover > .gutter { opacity: 1; }
.gutter button { width: 22px; height: 24px; display: grid; place-items: center; padding: 0; border: 0; border-radius: 4px; background: none; color: var(--fg-3); cursor: pointer; }
.gutter button:hover { background: var(--hover); color: var(--fg-2); }
.g-drag { cursor: grab !important; }
.bc { flex: 1; min-width: 0; display: flex; align-items: flex-start; gap: 4px; }
.txt, .txt2 { flex: 1; min-width: 0; outline: none; padding: 3px 2px; white-space: pre-wrap; word-break: break-word; overflow-wrap: anywhere; caret-color: var(--accent); }
.b-p > .bc > .txt:empty:not(:focus):not([data-always])::before { content: none; }
figcaption .txt:empty:not(:focus)::before { content: none; }
.editor > .block:only-child > .bc > .txt:empty::before { content: attr(data-ph); }
mark { background: var(--mark); color: inherit; border-radius: 3px; padding: 0 2px; }
mark[data-c="green"] { background: var(--mark-green); }
mark[data-c="blue"] { background: var(--mark-blue); }
mark[data-c="pink"] { background: var(--mark-pink); }
mark[data-c="orange"] { background: var(--mark-orange); }
[data-tc="red"] { color: var(--tc-red); } [data-tc="orange"] { color: var(--tc-orange); } [data-tc="green"] { color: var(--tc-green); }
[data-tc="blue"] { color: var(--tc-blue); } [data-tc="purple"] { color: var(--tc-purple); } [data-tc="gray"] { color: var(--tc-gray); }
.txt code, .txt2 code, .cell code, .ai-md code, .card-face code, .set-text code, .math-hint code, .todo-text code { font-family: var(--font-mono); font-size: .84em; background: var(--code-bg); color: var(--code-fg); padding: .1em .35em; border-radius: 4px; }
.txt a, .txt2 a, .cell a, .ai-md a { color: var(--accent-text); text-decoration: underline; text-underline-offset: 2px; }
.m { display: inline-block; padding: 0 2px; border-radius: 4px; cursor: pointer; white-space: nowrap; vertical-align: baseline; }
#editor .m:hover { background: var(--accent-soft); }
.m .katex { font-size: 1.08em; }
.math-empty { color: var(--fg-3); font-style: italic; font-size: .9em; }

.b-h1 { margin-top: 1.1em; --gt: 9px; }
.b-h2 { margin-top: .85em; --gt: 6px; }
.b-h3 { margin-top: .55em; --gt: 4px; }
.editor > .block:first-child { margin-top: 0; }
.b-h1 .txt, .b-h2 .txt, .b-h3 .txt { font-family: var(--font-head); }
.b-h1 .txt { font-size: calc(1.8em * var(--fs-head-scale)); font-weight: 700; line-height: 1.28; letter-spacing: -.015em; }
.b-h2 .txt { font-size: calc(1.42em * var(--fs-head-scale)); font-weight: 700; line-height: 1.32; letter-spacing: -.01em; }
.b-h3 .txt { font-size: calc(1.17em * var(--fs-head-scale)); font-weight: 650; line-height: 1.4; }

.mk { flex: none; width: 1.5em; min-height: calc(var(--fs) * var(--lh) + 6px); display: grid; place-items: center; align-self: flex-start; color: var(--fg); user-select: none; -webkit-user-select: none; }
.mk.bullet::before { content: ""; width: .36em; height: .36em; border-radius: 50%; background: currentColor; }
.mk.bullet.l1::before { background: transparent; border: 1.5px solid currentColor; }
.mk.bullet.l2::before { border-radius: 1px; }
.mk.num { font-variant-numeric: tabular-nums; justify-items: end; padding-right: 4px; width: 1.8em; }
.mk.check input, .todo-row .check input { appearance: none; -webkit-appearance: none; margin: 0; cursor: pointer; width: 17px; height: 17px; border: 1.6px solid var(--fg-3); border-radius: 4px; display: grid; place-items: center; background: var(--bg); }
.mk.check input:checked, .todo-row .check input:checked { background: var(--accent); border-color: var(--accent); }
.mk.check input:checked::after, .todo-row .check input:checked::after { content: ""; width: 9px; height: 5px; border: 2px solid var(--accent-fg); border-top: 0; border-right: 0; transform: translateY(-1px) rotate(-45deg); }
.b-todo.done .txt { color: var(--fg-3); text-decoration: line-through; text-decoration-color: var(--fg-3); }

.b-quote .bc { border-left: 3px solid var(--fg); padding-left: 12px; margin: 4px 0; }
.b-quote .txt { font-style: italic; }
.b-callout { --gt: 13px; }
.b-callout .bc { background: var(--c-info); border: 1px solid var(--c-info-b); border-radius: 10px; padding: 9px 14px 9px 9px; margin: 5px 0; gap: 8px; }
.b-callout.v-tip .bc { background: var(--c-tip); border-color: var(--c-tip-b); }
.b-callout.v-warn .bc { background: var(--c-warn); border-color: var(--c-warn-b); }
.b-callout.v-danger .bc { background: var(--c-danger); border-color: var(--c-danger-b); }
.b-callout.v-note .bc { background: var(--c-note); border-color: var(--c-note-b); }
.c-icon { border: 0; background: none; cursor: pointer; font-size: 1.15em; line-height: 1; padding: 5px 4px; border-radius: 6px; flex: none; min-width: 30px; min-height: 30px; }
.c-icon:hover { background: var(--hover); }

.b-code { --gt: 12px; }
.code-wrap { flex: 1; min-width: 0; background: var(--code-bg); border-radius: var(--radius); padding: 6px 14px 12px; margin: 4px 0; }
.code-head { display: flex; justify-content: space-between; align-items: center; font: 600 11.5px/1 var(--font-ui); letter-spacing: .05em; text-transform: uppercase; color: var(--fg-3); user-select: none; -webkit-user-select: none; }
pre.code { margin: 0; font: 14px/1.6 var(--font-mono); white-space: pre-wrap; tab-size: 2; padding: 4px 0 0; }

.b-math { --gt: 14px; }
.math-block { flex: 1; min-width: 0; margin: 4px 0; border-radius: 10px; }
.math-render { padding: 10px 12px; border-radius: 10px; cursor: pointer; overflow-x: auto; overflow-y: hidden; min-height: 2.6em; outline: none; }
.math-render:hover, .b-math.editing .math-render { background: var(--bg-sunk); }
.math-render .katex-display { margin: .2em 0; }
.math-edit { border: 1px solid var(--line); border-radius: 10px; padding: 8px; margin-top: 6px; background: var(--bg); box-shadow: var(--shadow-sm); font-family: var(--font-ui); font-size: 14px; line-height: 1.4; }
.math-src { width: 100%; resize: none; border: 0; outline: none; background: var(--bg-sunk); border-radius: 7px; padding: 8px 10px; font: 15px/1.5 var(--font-mono); color: var(--fg); overflow: hidden; }
.math-palette { display: flex; flex-wrap: wrap; gap: 4px; margin: 8px 0 6px; }
.math-palette button { min-width: 34px; height: 30px; padding: 0 7px; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); cursor: pointer; font: 14px/1 "Times New Roman", "New York", serif; color: var(--fg); }
.math-palette button:hover { border-color: var(--accent); color: var(--accent-text); }
.math-hint { font-size: 12.5px; color: var(--fg-3); line-height: 1.5; }
.math-pop { width: min(460px, calc(100vw - 16px)); max-width: none; padding: 10px; }
.math-pop .math-preview { min-height: 52px; display: grid; place-items: center; padding: 6px; background: var(--bg-sunk); border-radius: 8px; margin-bottom: 8px; overflow-x: auto; }
.math-pop .row { margin-top: 8px; }

.b-divider { padding: 10px 0; cursor: default; --gt: 10px; }
.b-divider hr { flex: 1; border: 0; border-top: 1px solid var(--line); margin: 0; }
.block[tabindex]:focus { outline: none; background: var(--accent-soft); }

.b-toggle .tg { flex: none; width: 1.5em; height: calc(var(--fs) * var(--lh) + 6px); display: grid; place-items: center; padding: 0; border: 0; background: none; cursor: pointer; color: var(--fg-2); border-radius: 4px; }
.b-toggle .tg:hover { background: var(--hover); }
.b-toggle .tg svg { transition: transform .15s; }
.b-toggle .tg.open svg { transform: rotate(90deg); }
.tg-main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.tg-main > .txt { font-weight: 600; }

.b-flash { --gt: 14px; }
.flash { flex: 1; min-width: 0; margin: 5px 0; display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: var(--bg); }
.fl-side { padding: 8px 14px 10px; display: flex; flex-direction: column; min-width: 0; }
.fl-side.back { background: var(--flash-back); border-left: 1px dashed var(--line); }
.fl-label { font: 650 11px/1.6 var(--font-ui); letter-spacing: .06em; text-transform: uppercase; color: var(--fg-3); user-select: none; -webkit-user-select: none; }
.fl-side:first-child .fl-label { color: var(--accent-text); }

.b-image { --gt: 8px; }
.b-image figure { margin: 6px 0; flex: 1; min-width: 0; }
.img-box { position: relative; display: inline-block; max-width: 100%; }
.img.size-s .img-box { width: 33%; } .img.size-m .img-box { width: 60%; } .img.size-l .img-box { width: 100%; }
.img-box img { display: block; width: 100%; height: auto; border-radius: 8px; min-height: 40px; background: var(--bg-sunk); }
.img-box.missing::after { content: "Obraz jeszcze się nie pobrał"; position: absolute; inset: 0; display: grid; place-items: center; color: var(--fg-3); font: 13px var(--font-ui); }
.img-tools { position: absolute; top: 8px; right: 8px; display: flex; gap: 2px; background: var(--fmt-bg); border-radius: 7px; padding: 2px; opacity: 0; transition: opacity .15s; }
.img-box:hover .img-tools { opacity: 1; }
.img-tools button { border: 0; background: none; color: var(--fmt-fg); font: 600 12px var(--font-ui); width: 26px; height: 24px; border-radius: 5px; cursor: pointer; }
.img-tools button:hover { background: rgba(255, 255, 255, .15); }
.b-image figcaption { font-size: .9em; color: var(--fg-2); }

.b-table { --gt: 8px; }
.tbl { flex: 1; min-width: 0; margin: 6px 0; }
.tbl-scroll { overflow-x: auto; }
.tbl table { border-collapse: collapse; min-width: 100%; }
.tbl td { border: 1px solid var(--line); vertical-align: top; min-width: 110px; padding: 0; }
.tbl .cell { outline: none; padding: 6px 9px; min-height: calc(var(--fs) * var(--lh) + 12px); white-space: pre-wrap; word-break: break-word; caret-color: var(--accent); }
.tbl .cell:focus { box-shadow: inset 0 0 0 2px var(--accent); border-radius: 2px; }
.tbl table.has-head tr:first-child td { background: var(--bg-sunk); font-weight: 650; }
.tbl-tools { display: flex; gap: 4px; margin-top: 4px; opacity: 0; transition: opacity .15s; }
.b-table:hover .tbl-tools, .b-table:focus-within .tbl-tools { opacity: 1; }

.toc { flex: 1; border-left: 2px solid var(--line); padding: 4px 0 4px 14px; margin: 6px 0; font-family: var(--font-ui); }
.toc-label { font-size: 11.5px; font-weight: 650; letter-spacing: .05em; text-transform: uppercase; color: var(--fg-3); margin-bottom: 4px; }
.toc-item { display: block; border: 0; background: none; cursor: pointer; padding: 2px 0; color: var(--fg-2); text-align: left; font-size: 14.5px; }
.toc-item:hover { color: var(--accent-text); text-decoration: underline; }
.toc-item.lv2 { padding-left: 16px; } .toc-item.lv3 { padding-left: 32px; font-size: 13.5px; }

.page-foot { min-height: 110px; cursor: text; }
.subpages { border-top: 1px solid var(--line); padding: 12px 0 8px; }
.sub-label { font-size: 11.5px; font-weight: 650; letter-spacing: .05em; text-transform: uppercase; color: var(--fg-3); margin-bottom: 4px; }
.sub-link { display: flex; align-items: center; gap: 8px; width: 100%; text-align: left; border: 0; background: none; cursor: pointer; padding: 5px 6px; margin-left: -6px; border-radius: 6px; font-size: 15px; }
.sub-link:hover { background: var(--hover); }
.sub-link .t-title { text-decoration: underline; text-decoration-color: var(--line); text-underline-offset: 3px; }
.topic-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; padding: 18px 0 30vh; }
.tn { display: flex; flex-direction: column; gap: 2px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); cursor: pointer; text-align: left; min-width: 0; }
.tn.next { text-align: right; grid-column: 2; }
.tn small { color: var(--fg-3); font-size: 12.5px; }
.tn b { font-size: 14.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tn:hover { border-color: var(--accent); }
.tn.new b { color: var(--accent-text); }
.drop-line { position: absolute; height: 3px; background: var(--accent); border-radius: 2px; pointer-events: none; z-index: 5; }

/* ---------- Menu, okienka ---------- */
.pop { position: fixed; z-index: 75; background: var(--bg-pop); border: 1px solid var(--line); border-radius: 11px; box-shadow: var(--shadow); padding: 5px; min-width: 220px; max-width: min(340px, calc(100vw - 16px)); max-height: min(460px, 72vh); overflow-y: auto; font-size: 14px; }
.mi { display: flex; align-items: center; gap: 10px; width: 100%; padding: 6px 8px; border: 0; border-radius: 6px; background: none; cursor: pointer; text-align: left; color: var(--fg); }
.mi:hover:not(:disabled), .mi.active { background: var(--hover); }
.mi:disabled { opacity: .4; cursor: default; }
.mi.danger { color: var(--danger); }
.mi-ic { width: 20px; display: grid; place-items: center; color: var(--fg-2); flex: none; }
.mi.danger .mi-ic { color: var(--danger); }
.mi-l { flex: 1; }
.mi-hint { color: var(--fg-3); font-size: 12px; }
.mi-check { color: var(--accent); font-weight: 700; }
.mi-text { display: flex; flex-direction: column; line-height: 1.3; min-width: 0; }
.mi-d { font-size: 12px; color: var(--fg-3); }
.pop-label { padding: 6px 8px 4px; font-size: 11.5px; font-weight: 650; letter-spacing: .05em; text-transform: uppercase; color: var(--fg-3); }
.pop-note { padding: 6px 8px; font-size: 12.5px; color: var(--fg-3); line-height: 1.4; }
.pop-empty { padding: 12px; color: var(--fg-3); font-size: 13.5px; }
.sep { height: 1px; background: var(--line); margin: 5px 4px; }
.glyph { flex: none; width: 38px; height: 38px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); font-weight: 650; font-size: 14px; color: var(--fg-2); }
.glyph.ai { background: var(--accent-soft); color: var(--accent-text); border-color: transparent; }
.glyph.small { width: 22px; height: 22px; border-radius: 5px; font-size: 11px; }
.emoji-grid { display: grid; grid-template-columns: repeat(8, 34px); gap: 2px; padding: 4px; }
.emoji-grid button { width: 34px; height: 34px; border: 0; border-radius: 6px; background: none; cursor: pointer; font-size: 20px; padding: 0; }
.emoji-grid button:hover { background: var(--hover); }
.emoji-foot { display: flex; justify-content: space-between; padding: 4px 4px 2px; border-top: 1px solid var(--line); margin-top: 4px; }
.swatches { display: flex; gap: 4px; padding: 2px 6px 8px; flex-wrap: wrap; }
.swatches button { width: 32px; height: 32px; border: 1px solid var(--line); border-radius: 7px; background: var(--bg); cursor: pointer; font-weight: 700; display: grid; place-items: center; }
.swatches button:hover { border-color: var(--accent); }

.fmt { position: fixed; z-index: 70; background: var(--fmt-bg); color: var(--fmt-fg); border-radius: 10px; box-shadow: var(--shadow); padding: 4px; font-size: 14px; }
.fmt-btns { display: flex; align-items: center; gap: 1px; }
.fmt button { min-width: 30px; height: 30px; padding: 0 7px; display: inline-flex; align-items: center; justify-content: center; gap: 3px; border: 0; border-radius: 6px; background: none; color: inherit; cursor: pointer; }
.fmt button:hover { background: rgba(255, 255, 255, .12); }
.fmt button.on { background: rgba(255, 255, 255, .22); }
.fmt .fmt-ai { color: #9fbcff; font-weight: 650; }
.fmt .hl { background: #ffe066; color: #2a2300; padding: 0 4px; border-radius: 3px; font-size: 13px; font-weight: 600; }
.fmt .fmt-color { text-decoration: underline 3px #ff7b7f; text-underline-offset: 3px; font-weight: 700; }
.fmt .mono { font-family: var(--font-mono); font-size: 12.5px; }
.fmt .serif { font-family: "Times New Roman", serif; font-style: italic; font-size: 15px; }
.fmt-sep { width: 1px; height: 18px; background: rgba(255, 255, 255, .2); margin: 0 3px; }
.fmt-link input { width: 300px; max-width: 70vw; border: 0; outline: none; background: transparent; color: inherit; padding: 6px 8px; }
.fmt-link input::placeholder { color: rgba(255, 255, 255, .55); }

.modal-back { position: fixed; inset: 0; z-index: 80; background: var(--scrim); display: flex; justify-content: center; align-items: flex-start; padding: 10vh 16px 16px; animation: fade .12s ease-out; }
.modal-back.wide { padding-top: 6vh; }
@keyframes fade { from { opacity: 0; } }
.modal { width: min(580px, 100%); max-height: 82vh; display: flex; flex-direction: column; background: var(--bg-pop); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow); overflow: hidden; }
.modal-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 14px 14px 8px 20px; }
.modal-head h3 { margin: 0; font-size: 17px; }
.modal-body { padding: 4px 20px 18px; overflow-y: auto; }
.modal-foot { display: flex; gap: 14px; padding: 8px 16px; border-top: 1px solid var(--line); font-size: 12px; color: var(--fg-3); flex-wrap: wrap; }
.modal-foot kbd { margin-right: 3px; }
.modal-foot2 { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 16px; border-top: 1px solid var(--line); flex-wrap: wrap; }
.confirm { width: min(440px, 100%); padding: 20px 20px 16px; }
.confirm h3 { margin: 0 0 6px; font-size: 17px; }
.confirm p { margin: 0 0 16px; color: var(--fg-2); font-size: 14.5px; }
.confirm .input { margin-bottom: 16px; }
.confirm .row { justify-content: flex-end; }
.field { display: flex; flex-direction: column; gap: 5px; margin-bottom: 12px; }
.field > span { font-size: 13px; font-weight: 600; color: var(--fg-2); }
.field small { font-weight: 400; color: var(--fg-3); }

.search-box { display: flex; align-items: center; gap: 10px; padding: 12px 16px; border-bottom: 1px solid var(--line); color: var(--fg-3); }
.search-box input { flex: 1; border: 0; outline: none; background: none; font-size: 17px; color: var(--fg); }
.results { overflow-y: auto; padding: 6px; }
.result { display: flex; gap: 10px; align-items: flex-start; width: 100%; text-align: left; padding: 8px 10px; border: 0; border-radius: 8px; background: none; cursor: pointer; }
.result.active { background: var(--hover); }
.result .t-icon { padding-top: 2px; }
.r-main { flex: 1; min-width: 0; }
.r-title { font-weight: 600; font-size: 15px; }
.r-path { font-size: 12px; color: var(--fg-3); }
.r-snip { font-size: 13px; color: var(--fg-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.results-label { padding: 6px 10px 2px; font-size: 11.5px; font-weight: 650; letter-spacing: .05em; text-transform: uppercase; color: var(--fg-3); }
.trash-list { overflow-y: auto; padding: 4px 8px 8px; }
.trash-row { display: flex; align-items: center; gap: 8px; padding: 6px 8px; border-radius: 8px; flex-wrap: wrap; }
.trash-row:hover { background: var(--hover); }
.trash-row .t-title { min-width: 140px; display: flex; flex-direction: column; }
.trash-row .t-title small { color: var(--fg-3); font-size: 12px; }
.help-grid { display: grid; grid-template-columns: auto 1fr; gap: 8px 16px; align-items: baseline; font-size: 14.5px; margin: 0; }
.help-grid dt { white-space: nowrap; }
.help-grid dd { margin: 0; color: var(--fg-2); }
.help-h { font-size: 12px; font-weight: 650; letter-spacing: .05em; text-transform: uppercase; color: var(--fg-3); margin: 20px 0 8px; }

/* Okno zeszytu */
.nb-dialog { width: min(520px, 100%); }
.nbd-preview { display: flex; justify-content: center; padding: 8px 0 16px; pointer-events: none; }
.nbd-preview .cover { width: 130px; }
.color-row, .icon-row { display: flex; flex-wrap: wrap; gap: 6px; }
.color-dot { width: 30px; height: 30px; border-radius: 50%; border: 0; background: var(--c); cursor: pointer; box-shadow: inset 0 0 0 2px rgba(0, 0, 0, .08); }
.color-dot.on { box-shadow: 0 0 0 2px var(--bg-pop), 0 0 0 4px var(--c); }
.icon-opt { width: 36px; height: 36px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); cursor: pointer; font-size: 19px; padding: 0; }
.icon-opt.on { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }

/* Ustawienia */
.settings-modal { width: min(920px, 100%); height: min(680px, 86vh); max-height: none; flex-direction: row; }
.set-nav { width: 220px; flex: none; background: var(--bg-side); border-right: 1px solid var(--line); padding: 16px 8px; display: flex; flex-direction: column; gap: 1px; overflow-y: auto; }
.set-nav h3 { margin: 0 8px 12px; font-size: 16px; }
.set-nav button { display: flex; align-items: center; gap: 10px; border: 0; background: none; padding: 7px 10px; border-radius: 7px; cursor: pointer; color: var(--fg-2); text-align: left; font-weight: 500; }
.set-nav button:hover { background: var(--hover); color: var(--fg); }
.set-nav button.on { background: var(--active); color: var(--fg); font-weight: 600; }
.set-body { flex: 1; min-width: 0; overflow-y: auto; padding: 22px 30px 30px; position: relative; }
.set-close { position: absolute; top: 12px; right: 12px; }
.set-body h2 { margin: 0 0 18px; font-size: 22px; letter-spacing: -.01em; }
.set-group { margin-bottom: 22px; }
.set-group.two { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.set-label { font-size: 13px; font-weight: 650; color: var(--fg-2); margin-bottom: 8px; display: flex; justify-content: space-between; }
.set-label output { color: var(--fg-3); font-weight: 500; font-variant-numeric: tabular-nums; }
.set-hint { display: block; color: var(--fg-3); font-size: 12.5px; margin-top: 6px; }
.set-text { color: var(--fg-2); font-size: 14.5px; line-height: 1.55; margin: -6px 0 18px; max-width: 62ch; }
.err-text { color: var(--danger) !important; }
.seg { display: inline-flex; flex-wrap: wrap; gap: 2px; background: var(--bg-sunk); padding: 3px; border-radius: 9px; }
.seg button { border: 0; background: none; padding: 6px 12px; border-radius: 7px; cursor: pointer; color: var(--fg-2); font-size: 13.5px; font-weight: 550; }
.seg button.on { background: var(--bg); color: var(--fg); box-shadow: var(--shadow-sm); }
.theme-grid, .paper-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.theme-card, .paper-card { border: 2px solid var(--line); border-radius: 12px; background: var(--bg); cursor: pointer; padding: 8px 8px 8px; display: flex; flex-direction: column; gap: 6px; font-size: 13px; font-weight: 550; color: var(--fg-2); }
.theme-card.on, .paper-card.on { border-color: var(--accent); color: var(--fg); }
.tc-prev { height: 54px; border-radius: 7px; display: flex; flex-direction: column; gap: 5px; padding: 9px; }
.tc-prev i { height: 6px; border-radius: 3px; display: block; }
.tc-prev i:nth-child(1) { width: 60%; } .tc-prev i:nth-child(2) { width: 85%; } .tc-prev i:nth-child(3) { width: 45%; }
.t-light .tc-prev { background: #fff; border: 1px solid #e6e8ec; } .t-light .tc-prev i { background: #d8dce4; }
.t-dark .tc-prev { background: #1d1f24; } .t-dark .tc-prev i { background: #3d414a; }
.t-sepia .tc-prev { background: #f8f1e3; } .t-sepia .tc-prev i { background: #dccdb0; }
.t-system .tc-prev { background: linear-gradient(120deg, #fff 50%, #1d1f24 50%); border: 1px solid #e6e8ec; } .t-system .tc-prev i { background: #8b909b; }
.pc-prev { height: 54px; border-radius: 7px; background-color: #fff; border: 1px solid #e6e8ec; }
.p-lines .pc-prev { background-image: linear-gradient(to bottom, transparent 10px, rgba(70, 110, 190, .3) 10px, rgba(70, 110, 190, .3) 11px, transparent 11px); background-size: 100% 11px; }
.p-grid .pc-prev { background-image: linear-gradient(to bottom, rgba(70, 110, 190, .25) 1px, transparent 1px), linear-gradient(to right, rgba(70, 110, 190, .25) 1px, transparent 1px); background-size: 8px 8px; }
.p-dots .pc-prev { background-image: radial-gradient(circle, rgba(70, 110, 190, .45) 1px, transparent 1.3px); background-size: 9px 9px; }
.accent-row { display: flex; gap: 8px; flex-wrap: wrap; }
.accent-dot { width: 32px; height: 32px; border-radius: 50%; border: 0; cursor: pointer; background: hsl(var(--h) var(--s) 52%); }
.accent-dot.on { box-shadow: 0 0 0 2px var(--bg-pop), 0 0 0 4px hsl(var(--h) var(--s) 52%); }
.a-blue { --h: 222; --s: 76%; } .a-indigo { --h: 238; --s: 62%; } .a-violet { --h: 266; --s: 60%; } .a-pink { --h: 330; --s: 66%; } .a-red { --h: 2; --s: 70%; }
.a-orange { --h: 24; --s: 85%; } .a-green { --h: 148; --s: 55%; } .a-teal { --h: 182; --s: 70%; } .a-graphite { --h: 220; --s: 9%; }
.font-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 8px; }
.font-card { border: 2px solid var(--line); border-radius: 10px; background: var(--bg); cursor: pointer; padding: 10px 12px; text-align: left; display: flex; flex-direction: column; gap: 2px; }
.font-card b { font-size: 16px; }
.font-card span { font-size: 15px; color: var(--fg-2); }
.font-card small { font-size: 12px; color: var(--fg-3); }
.font-card.on { border-color: var(--accent); }
input[type=range] { width: 100%; accent-color: var(--accent); }
.set-preview { border: 1px solid var(--line); border-radius: 12px; padding: 14px 18px; margin-bottom: 22px; font-family: var(--font-body); font-size: var(--fs); line-height: var(--lh); }
.set-preview h3 { font-family: var(--font-head); margin: 0 0 4px; font-size: calc(1.3em * var(--fs-head-scale)); }
.set-preview p { margin: 0; }
.set-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 12px 0; border-top: 1px solid var(--line-2); cursor: pointer; }
.set-row > span:first-child { display: flex; flex-direction: column; }
.set-row b { font-weight: 600; font-size: 14.5px; }
.set-row small { color: var(--fg-3); font-size: 13px; }
.set-row.toggle input { position: absolute; opacity: 0; pointer-events: none; }
.switch { width: 38px; height: 22px; border-radius: 999px; background: var(--active); position: relative; flex: none; transition: background .15s; }
.switch::after { content: ""; position: absolute; top: 2px; left: 2px; width: 18px; height: 18px; border-radius: 50%; background: #fff; box-shadow: 0 1px 2px rgba(0, 0, 0, .25); transition: transform .15s; }
.set-row input:checked + .switch { background: var(--accent); }
.set-row input:checked + .switch::after { transform: translateX(16px); }
.set-row input:focus-visible + .switch { outline: 2px solid var(--accent); outline-offset: 2px; }
.auth-card { max-width: 420px; border: 1px solid var(--line); border-radius: 14px; padding: 18px; }
.auth-tabs { width: 100%; margin-bottom: 16px; }
.auth-tabs button { flex: 1; }
.form-error { background: var(--c-danger); color: var(--danger); border-radius: 8px; padding: 8px 12px; font-size: 13.5px; margin-bottom: 12px; }
.adv { margin-top: 14px; font-size: 14px; }
.adv summary { cursor: pointer; color: var(--fg-2); font-weight: 550; padding: 4px 0; }
.adv[open] summary { margin-bottom: 10px; }
.profile { display: flex; align-items: center; gap: 16px; margin-bottom: 22px; }
.profile-main { display: flex; flex-direction: column; }
.profile-main b { font-size: 18px; }
.profile-main span { color: var(--fg-2); }
.profile-main small { color: var(--fg-3); }
.inline-form { display: flex; gap: 8px; max-width: 420px; }
.sync-card { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 14px 16px; border: 1px solid var(--line); border-radius: 12px; }
.sync-card > div { display: flex; flex-direction: column; }
.sync-card small { color: var(--fg-3); font-size: 13px; }
.stats-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; margin-bottom: 18px; }
.stats-grid > div { background: var(--bg-sunk); border-radius: 10px; padding: 10px 12px; display: flex; flex-direction: column; }
.stats-grid b { font-size: 17px; font-variant-numeric: tabular-nums; }
.stats-grid small { color: var(--fg-3); font-size: 12px; }
.set-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line); }
.data-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.data-card { display: flex; flex-direction: column; align-items: flex-start; gap: 4px; text-align: left; border: 1px solid var(--line); border-radius: 12px; background: var(--bg); padding: 14px; cursor: pointer; }
.data-card:hover { border-color: var(--accent); }
.data-card svg { color: var(--accent); margin-bottom: 4px; width: 20px; height: 20px; }
.data-card small { color: var(--fg-3); font-size: 13px; line-height: 1.4; }
.about { display: flex; gap: 16px; align-items: center; margin-bottom: 16px; }
.about img { border-radius: 14px; }
.about div { display: flex; flex-direction: column; }
.about b { font-size: 18px; }
.about span { color: var(--fg-2); }
.about small { color: var(--fg-3); }

/* Nauka */
.study-modal { width: min(640px, 100%); max-height: none; }
.study-body { padding: 8px 20px 20px; display: flex; flex-direction: column; gap: 14px; }
.progress { height: 6px; background: var(--hover); border-radius: 3px; overflow: hidden; }
.progress > div { height: 100%; background: var(--ok); border-radius: 3px; transition: width .25s; }
.study-meta { display: flex; justify-content: space-between; gap: 10px; font-size: 13px; color: var(--fg-3); font-variant-numeric: tabular-nums; }
.card { perspective: 1200px; cursor: pointer; outline: none; }
.card-inner { position: relative; min-height: 250px; transition: transform .45s cubic-bezier(.2, .7, .2, 1); transform-style: preserve-3d; }
.card.flipped .card-inner { transform: rotateY(180deg); }
.card-face { position: absolute; inset: 0; backface-visibility: hidden; -webkit-backface-visibility: hidden; border: 1px solid var(--line); border-radius: 16px; background: var(--bg); display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 30px; font-family: var(--font-body); font-size: 23px; line-height: 1.4; box-shadow: var(--shadow-sm); transform: rotateY(0deg) translateZ(1px); }
.card-face .card-text { max-height: 100%; overflow: auto; }
.card .card-face { transition: visibility 0s linear .2s; }
.card:not(.flipped) .card-face.back, .card.flipped .card-face:not(.back) { visibility: hidden; }
.card-face.back { transform: rotateY(180deg) translateZ(1px); background: var(--flash-back); }
.card-face .fl-label { position: absolute; top: 14px; left: 0; right: 0; }
.study-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.study-actions .btn { min-width: 160px; padding: 10px 16px; }
.btn.again { color: var(--danger); }
.btn.know { background: var(--ok); border-color: var(--ok); color: #fff; }
.study-done { text-align: center; padding: 26px 10px; }
.big-emoji { font-size: 48px; }
.study-done h4 { font-size: 22px; margin: 6px 0; }
.study-done p { color: var(--fg-2); margin: 0 0 18px; }

/* Eksport */
.export-modal { width: min(560px, 100%); }

/* Writer AI */
.ai-panel { width: 390px; flex: none; height: 100%; display: flex; flex-direction: column; border-left: 1px solid var(--line); background: var(--bg-side); }
.ai-head { display: flex; align-items: center; gap: 8px; padding: 10px 10px 8px 14px; border-bottom: 1px solid var(--line); }
.ai-title { display: flex; align-items: center; gap: 7px; color: var(--accent); }
.ai-title b { color: var(--fg); font-size: 15px; }
.ai-model { font-size: 11.5px; padding: 2px 8px; border-radius: 999px; background: var(--accent-soft); color: var(--accent-text); font-weight: 600; }
.ai-msgs { flex: 1; overflow-y: auto; padding: 14px; display: flex; flex-direction: column; gap: 14px; }
.ai-empty { text-align: center; padding: 30px 10px; color: var(--fg-2); }
.ai-empty h3 { margin: 12px 0 6px; color: var(--fg); }
.ai-empty p { margin: 0 0 16px; font-size: 14px; line-height: 1.5; }
.ai-orb { width: 54px; height: 54px; margin: 0 auto; border-radius: 16px; display: grid; place-items: center; color: #fff; background: linear-gradient(140deg, hsl(var(--ah) 80% 60%), hsl(calc(var(--ah) + 40) 75% 58%)); box-shadow: 0 8px 24px hsl(var(--ah) 70% 50% / .35); }
.ai-orb svg { width: 26px; height: 26px; }
.ai-examples { display: flex; flex-direction: column; gap: 6px; }
.ai-ex { border: 1px solid var(--line); background: var(--bg); border-radius: 10px; padding: 8px 12px; cursor: pointer; text-align: left; font-size: 13.5px; color: var(--fg-2); }
.ai-ex:hover { border-color: var(--accent); color: var(--fg); }
.ai-msg.user { display: flex; justify-content: flex-end; }
.ai-msg.user .bubble { background: var(--accent); color: var(--accent-fg); padding: 8px 12px; border-radius: 14px 14px 4px 14px; max-width: 88%; font-size: 14px; line-height: 1.45; overflow-wrap: anywhere; }
.ai-msg.bot { font-size: 14.5px; line-height: 1.55; }
.ai-md > *:first-child { margin-top: 0; }
.ai-md h1, .ai-md h2, .ai-md h3 { font-size: 16px; margin: 14px 0 6px; }
.ai-md p { margin: 0 0 8px; }
.ai-md .s-math { overflow-x: auto; }
.ai-cursor { display: inline-block; color: var(--fg-3); font-size: 13px; }
.ai-cursor::after { content: "▍"; animation: blink 1s steps(2) infinite; color: var(--accent); margin-left: 2px; }
@keyframes blink { 50% { opacity: 0; } }
.ai-error { color: var(--danger); background: var(--c-danger); padding: 8px 12px; border-radius: 10px; font-size: 13.5px; }
.ai-acts { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.ai-cards { display: flex; flex-direction: column; gap: 6px; }
.ai-card { border: 1px solid var(--line); border-radius: 10px; padding: 8px 10px; background: var(--bg); display: flex; flex-direction: column; gap: 2px; }
.ai-card span { color: var(--fg-2); }
.ai-quiz { display: flex; flex-direction: column; gap: 12px; }
.qz { display: flex; flex-direction: column; gap: 4px; }
.qz-opt { text-align: left; border: 1px solid var(--line); background: var(--bg); border-radius: 8px; padding: 6px 10px; cursor: pointer; font-size: 14px; }
.qz-opt:hover:not(:disabled) { border-color: var(--accent); }
.qz-opt.ok { border-color: var(--ok); background: var(--c-tip); }
.qz-opt.bad { border-color: var(--danger); background: var(--c-danger); }
.qz-exp { font-size: 13px; color: var(--fg-2); }
.ai-bottom { border-top: 1px solid var(--line); padding: 10px 12px calc(10px + env(safe-area-inset-bottom, 0px)); display: flex; flex-direction: column; gap: 8px; }
.ai-chips { display: flex; gap: 6px; overflow-x: auto; padding-bottom: 2px; scrollbar-width: none; }
.chip { flex: none; border: 1px solid var(--line); background: var(--bg); border-radius: 999px; padding: 4px 10px; font-size: 12.5px; cursor: pointer; color: var(--fg-2); white-space: nowrap; }
.chip:hover { border-color: var(--accent); color: var(--fg); }
.ai-form { display: flex; align-items: flex-end; gap: 6px; border: 1px solid var(--line); border-radius: 12px; background: var(--bg); padding: 6px 6px 6px 12px; }
.ai-form:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.ai-form textarea { flex: 1; border: 0; outline: none; resize: none; background: none; font-size: 14.5px; line-height: 1.45; padding: 4px 0; max-height: 160px; }
.ai-send { width: 32px; height: 32px; border-radius: 9px; border: 0; background: var(--accent); color: var(--accent-fg); display: grid; place-items: center; cursor: pointer; flex: none; }
.ai-ctx { font-size: 12px; color: var(--fg-3); }
.ai-ctx label { display: flex; align-items: center; gap: 6px; cursor: pointer; }
.ai-ctx input { accent-color: var(--accent); margin: 0; }

/* Statyczne bloki (AI, PDF) */
.s-li { display: flex; gap: 6px; margin: 2px 0; }
.s-mk { flex: none; min-width: 1.2em; color: var(--fg-2); }
.s-mk.num { font-variant-numeric: tabular-nums; }
.s-box { flex: none; width: 1em; height: 1em; border: 1.5px solid currentColor; border-radius: 3px; display: inline-grid; place-items: center; font-size: .75em; margin-top: .3em; color: var(--fg-2); }
.s-todo.done > div { text-decoration: line-through; color: var(--fg-3); }
.s-todo.done .s-box { background: var(--fg-3); border-color: var(--fg-3); color: #fff; }
.s-callout { display: flex; gap: 8px; padding: 9px 12px; border-radius: 10px; background: var(--c-info); border: 1px solid var(--c-info-b); margin: 8px 0; }
.s-callout.v-tip { background: var(--c-tip); border-color: var(--c-tip-b); }
.s-callout.v-warn { background: var(--c-warn); border-color: var(--c-warn-b); }
.s-callout.v-danger { background: var(--c-danger); border-color: var(--c-danger-b); }
.s-callout.v-note { background: var(--c-note); border-color: var(--c-note-b); }
.s-code { background: var(--code-bg); border-radius: 8px; padding: 10px 12px; font: 13px/1.55 var(--font-mono); white-space: pre-wrap; overflow-x: auto; }
.s-math { margin: 6px 0; overflow-x: auto; }
.s-flash { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; margin: 6px 0; }
.s-flash > div { padding: 8px 12px; }
.s-flash > div + div { border-left: 1px dashed var(--line); background: var(--flash-back); }
.s-fl { display: block; font: 650 10.5px/1.6 var(--font-ui); letter-spacing: .06em; text-transform: uppercase; color: var(--fg-3); }
.s-table-wrap { overflow-x: auto; margin: 8px 0; }
.s-table { border-collapse: collapse; width: 100%; font-size: .95em; }
.s-table td, .s-table th { border: 1px solid var(--line); padding: 5px 8px; text-align: left; vertical-align: top; }
.s-table th { background: var(--bg-sunk); }
.s-toggle-t { font-weight: 600; }
.s-toggle-b { padding-left: 1.2em; }
.s-toc { border-left: 2px solid var(--line); padding-left: 12px; margin: 8px 0; }
.s-toc .lv2 { padding-left: 14px; } .s-toc .lv3 { padding-left: 28px; }
blockquote { margin: 8px 0; padding-left: 12px; border-left: 3px solid var(--fg); font-style: italic; }
.s-img { margin: 8px 0; }
.s-img img { max-width: 100%; border-radius: 6px; }
.s-img.size-s img { width: 33%; } .s-img.size-m img { width: 60%; }
.s-img figcaption { font-size: .88em; color: var(--fg-2); }

/* Toast */
.toast { position: fixed; left: 50%; bottom: calc(22px + env(safe-area-inset-bottom, 0px)); transform: translateX(-50%); z-index: 95; display: flex; align-items: center; gap: 14px; background: var(--fmt-bg); color: var(--fmt-fg); padding: 9px 10px 9px 16px; border-radius: 10px; box-shadow: var(--shadow); font-size: 14px; max-width: calc(100vw - 32px); }
.toast button { border: 0; background: rgba(255, 255, 255, .14); color: inherit; border-radius: 6px; padding: 4px 10px; cursor: pointer; font-weight: 600; }
.toast:not(:has(button)) { padding-right: 16px; }

/* Tryb skupienia */
body.focus-mode #sidebar, body.focus-mode .topbar > :not(.top-right), body.focus-mode .top-right > :not(#btn-timer) { display: none !important; }
body.focus-mode .topbar { position: absolute; right: 0; z-index: 5; opacity: .2; }
body.focus-mode .topbar:hover { opacity: 1; }

#print-root { display: none; }

/* ---------- Telefon i tablet ---------- */
@media (min-width: 821px) { body.sb-hidden #sidebar { display: none; } }
@media (max-width: 1180px) { body.ai-open .words, body.ai-open .sync-pill span { display: none; } }
@media (max-width: 1000px) {
  .ai-panel { position: fixed; right: 0; top: 0; bottom: 0; z-index: 45; box-shadow: var(--shadow); width: min(420px, 100vw); padding-top: env(safe-area-inset-top, 0px); }
}
@media (max-width: 820px) {
  #sidebar { position: fixed; z-index: 40; top: 0; bottom: 0; left: 0; width: min(300px, 86vw); transform: translateX(-102%); transition: transform .2s ease; box-shadow: var(--shadow); padding-top: env(safe-area-inset-top, 0px); }
  body.sb-mobile-open #sidebar { transform: none; }
  body.sb-mobile-open #sb-scrim { display: block; }
  #btn-sb-open { display: grid; }
  .page { padding: 22px 18px 0; }
  .home, .nb-view { padding-left: 18px; padding-right: 18px; }
  .nb-hero::before { left: -18px; right: -18px; }
  .gutter { display: none; }
  .page-title { font-size: 2em; }
  .words, .sync-pill span { display: none; }
  .flash, .s-flash { grid-template-columns: 1fr; }
  .fl-side.back { border-left: 0; border-top: 1px dashed var(--line); }
  .page-tools { opacity: 1; }
  .settings-modal { flex-direction: column; height: 90vh; }
  .set-nav { width: auto; flex-direction: row; overflow-x: auto; border-right: 0; border-bottom: 1px solid var(--line); padding: 8px; }
  .set-nav h3 { display: none; }
  .set-nav button { flex: none; }
  .set-body { padding: 18px; }
  .theme-grid, .paper-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stats-grid, .data-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .set-group.two { grid-template-columns: 1fr; }
  .topic-nav { grid-template-columns: 1fr; }
  .tn.next { grid-column: 1; }
  .shelf { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 14px; }
  .t-date { display: none; }
}
@media (max-width: 520px) {
  .btn.study > span:nth-child(2), .timer-btn span { display: none; }
  .home-head h1, .nb-hero h1 { font-size: 27px; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; animation: none !important; } }


a.btn { text-decoration: none; }
.mac-promo { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 18px; border: 1px solid var(--line); border-radius: 14px; }
.mac-promo div { display: flex; flex-direction: column; }
.mac-promo span { color: var(--fg-2); font-size: 14px; }

/* ================= Liquid Glass ================= */
/* Treść zajmuje całe okno; panel boczny, pasek i panel AI to pływające tafle szkła nad nią. */
#main { position: fixed; inset: 0; }
body.ai-open { --ai-space: calc(390px + var(--sb-gap) * 2); }
.topbar {
  position: absolute; top: 0; left: 0; right: 0; z-index: 20; height: var(--top-h);
  padding: 0 calc(var(--ai-space) + 10px) 0 calc(var(--sb-space) + 4px);
  justify-content: space-between; pointer-events: none;
}
.topbar > * { pointer-events: auto; }
.topbar::before {
  content: ""; position: absolute; top: 0; bottom: -26px; left: var(--sb-space); right: var(--ai-space); z-index: -1; pointer-events: none;
  background: linear-gradient(to bottom, var(--bg) 0%, var(--bg) 45%, color-mix(in srgb, var(--bg) 80%, transparent) 70%, transparent 100%);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  -webkit-mask-image: linear-gradient(to bottom, #000 60%, transparent); mask-image: linear-gradient(to bottom, #000 60%, transparent);
}
.crumbs, .top-right {
  flex: 0 1 auto; height: 36px; padding: 0 4px; border-radius: 999px;
  background: var(--glass-strong); -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur);
  border: .5px solid var(--glass-border); box-shadow: var(--glass-shadow), inset 0 1px 0 var(--glass-hi);
}
.crumbs { min-width: 0; max-width: 60%; }
.crumbs .sep { display: grid; place-items: center; color: var(--fg-3); align-self: center; transform: translateY(-3px); }
.crumbs .sep svg { width: 12px; height: 12px; }
.crumbs:empty { visibility: hidden; }
.crumbs button { border-radius: 999px; padding: 4px 10px; }
.top-right { gap: 2px; }
.top-right .icon-btn, .top-right .btn, .sync-pill { border-radius: 999px; }
.btn.study { padding: 4px 12px; }
#btn-sb-open { pointer-events: auto; width: 36px; height: 36px; border-radius: 999px; background: var(--glass); border: .5px solid var(--glass-border); box-shadow: var(--glass-shadow), inset 0 1px 0 var(--glass-hi); -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur); margin-right: 8px; }
.topbar { display: flex; }
.topbar #crumbs { margin-right: auto; }
#view { position: absolute; inset: 0; padding: var(--top-h) var(--ai-space) 0 var(--sb-space); scroll-padding-top: calc(var(--top-h) + 10px); }
.home, .nb-view { padding-top: 22px; }
.page { padding-top: 26px; }
.nb-hero { padding-top: 26px; }
.nb-hero::before { display: none; }
.nb-hero { border-bottom: 0; }
.nb-hero::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: linear-gradient(to right, var(--nb), transparent 70%); opacity: .55; }

@media (min-width: 821px) {
  #sidebar {
    position: fixed; z-index: 30; top: var(--sb-gap); bottom: var(--sb-gap); left: var(--sb-gap); width: var(--sb-w); height: auto;
    border-radius: 18px; border: .5px solid var(--glass-border); overflow: hidden;
    background: var(--glass); -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur);
    box-shadow: var(--glass-shadow), inset 0 1px 0 var(--glass-hi), inset 0 0 0 .5px rgba(255, 255, 255, .06);
  }
  body.sb-hidden, body.focus-mode { --sb-space: 0px; }
  body.sb-hidden .topbar { padding-left: 12px; }
  .ai-panel {
    position: fixed; z-index: 30; top: var(--sb-gap); bottom: var(--sb-gap); right: var(--sb-gap); width: 390px; height: auto;
    border-radius: 18px; border: .5px solid var(--glass-border); overflow: hidden;
    background: var(--glass-strong); -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur);
    box-shadow: var(--glass-shadow), inset 0 1px 0 var(--glass-hi);
  }
}
@media (max-width: 1000px) { body.ai-open { --ai-space: 0px; } .ai-panel { border-radius: 18px 0 0 18px; } }
.sb-head { min-height: 50px; padding: 8px 10px 4px 14px; }
.sb-foot { border-top: .5px solid var(--glass-border); }
.sb-item, .tree-row { border-radius: 8px; }
.tree-row.active { background: color-mix(in srgb, var(--accent) 16%, transparent); }
.tree-row.active .t-title { color: var(--fg); }
.ai-head, .ai-bottom { border-color: var(--glass-border); }
.ai-panel .ai-form, .ai-panel .chip, .ai-panel .ai-card, .ai-panel .qz-opt { background: color-mix(in srgb, var(--bg) 70%, transparent); }

/* Szklane menu, okna i pasek formatowania */
.pop, .modal, .toast {
  background: var(--glass-strong); -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur);
  border: .5px solid var(--glass-border); box-shadow: var(--shadow), inset 0 1px 0 var(--glass-hi);
}
.pop { border-radius: 14px; }
.modal { border-radius: 20px; }
.toast { color: var(--fg); border-radius: 999px; padding-left: 18px; }
.toast button { background: var(--accent); color: var(--accent-fg); border-radius: 999px; }
.fmt { border-radius: 12px; -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur); background: color-mix(in srgb, var(--fmt-bg) 88%, transparent); box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, .08); }
.modal-back { background: color-mix(in srgb, var(--scrim) 70%, transparent); -webkit-backdrop-filter: blur(3px); backdrop-filter: blur(3px); }
.set-nav { background: transparent; border-right: .5px solid var(--glass-border); }
.set-nav button.on { background: color-mix(in srgb, var(--accent) 16%, transparent); }
.btn { border-radius: 10px; }
.btn.primary { box-shadow: inset 0 1px 0 rgba(255, 255, 255, .25), 0 1px 2px rgba(0, 0, 0, .12); }

/* Aplikacja na Maca: bez paska tytułu, światła okna w panelu bocznym, prawdziwa przezroczystość pod panelem */
html.native body { background: transparent; }
html.native #main { background: linear-gradient(to right, transparent var(--sb-space), var(--bg) var(--sb-space)); }
html.native body.sb-hidden #main, html.native body.focus-mode #main { background: var(--bg); }
html.native #sidebar { background: color-mix(in srgb, var(--glass) 55%, transparent); }
html.native .sb-head { padding: 0 8px 0 84px; min-height: 36px; height: 36px; margin-bottom: 8px; }
html.native .sb-head .brand span { display: none; }
html.native body.sb-hidden .topbar, html.native body.focus-mode .topbar { padding-left: 86px; }
html.native body.fullscreen .sb-head { padding-left: 14px; }
html.native body.fullscreen .sb-head .brand span { display: inline; }
html.native body.fullscreen.sb-hidden .topbar { padding-left: 12px; }
@media (max-width: 820px) { html.native #main { background: var(--bg); } }


/* ================= Telefon i tablet ================= */
:root { --kb: 0px; --safe-t: env(safe-area-inset-top, 0px); --safe-b: env(safe-area-inset-bottom, 0px); }
.topbar { top: var(--safe-t); }
#view { padding-top: calc(var(--top-h) + var(--safe-t)); padding-bottom: var(--safe-b); }
html.mbar-on #view { padding-bottom: 76px; }
html, body { overscroll-behavior: none; }
#view { overscroll-behavior: contain; -webkit-overflow-scrolling: touch; }
/* Przy otwartej klawiaturze aplikacja zajmuje tylko widoczną część ekranu (iOS nie zmniejsza okna sam). */
html.touch.kb-open #main { top: var(--vvtop, 0px); bottom: auto; height: var(--vvh, 100%); }
html.touch.kb-open .topbar { top: 0; }
html.touch.kb-open #view { padding-top: var(--top-h); }
html.touch.kb-open .ai-panel { top: var(--vvtop, 0px); bottom: auto; height: var(--vvh, 100%); padding-top: 0; }
html.touch.kb-open .ai-bottom { padding-bottom: 10px; }
html.touch .txt, html.touch .txt2, html.touch .cell, html.touch #title { -webkit-user-select: text; user-select: text; -webkit-touch-callout: default; }

/* Pasek nad klawiaturą */
.mbar {
  position: fixed; z-index: 66; left: 50%; transform: translateX(-50%);
  bottom: calc(var(--kb) + 8px);
  display: flex; align-items: center; gap: 2px; padding: 4px; max-width: calc(100vw - 16px); overflow-x: auto; scrollbar-width: none;
  border-radius: 999px; background: var(--glass-strong); -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur);
  border: .5px solid var(--glass-border); box-shadow: var(--shadow), inset 0 1px 0 var(--glass-hi);
}
html:not(.kb-open) .mbar { bottom: calc(12px + var(--safe-b)); }
.mbar button { flex: none; width: 42px; height: 42px; display: grid; place-items: center; border: 0; background: none; border-radius: 999px; color: var(--fg); cursor: pointer; }
.mbar button svg { width: 20px; height: 20px; }
.mbar button:active, .mbar button.on { background: color-mix(in srgb, var(--accent) 18%, transparent); color: var(--accent-text); }
.mbar button:disabled { opacity: .35; }
.mbar .serif { font-family: "Times New Roman", serif; font-style: italic; font-size: 17px; }
.mbar-sep { flex: none; width: 1px; height: 22px; background: var(--line); margin: 0 2px; }

/* Menu „/” i pasek formatowania przyklejone nad klawiaturą */
.pop.slash.sheet { left: 8px; right: 8px; top: auto; bottom: calc(var(--kb) + 66px); max-width: none; max-height: min(46vh, 380px); border-radius: 18px; }
html:not(.kb-open) .pop.slash.sheet { bottom: calc(70px + var(--safe-b)); }
.fmt.docked { left: 8px !important; right: 8px; top: auto !important; bottom: calc(var(--kb) + 66px); overflow-x: auto; scrollbar-width: none; border-radius: 16px; }
html:not(.kb-open) .fmt.docked { bottom: calc(70px + var(--safe-b)); }
.fmt.docked .fmt-btns { width: max-content; }
.fmt.docked button { min-width: 38px; height: 38px; }

/* Dotyk: wszystko, co normalnie pojawia się po najechaniu myszą, jest widoczne */
html.touch .t-acts { display: flex; }
html.touch .t-count { display: none; }
html.touch .tbl-tools, html.touch .img-tools, html.touch .page-tools { opacity: 1; }
html.touch .tree-row { min-height: 40px; }
html.touch .sb-item { padding: 9px 8px; }
html.touch input, html.touch textarea, html.touch select, html.touch .search-box input { font-size: 16px; }
html.touch .math-src { font-size: 16px; }
html.touch .mi { padding: 10px 10px; }
html.touch .gutter { display: none; }

@media (max-width: 820px) {
  :root { --sb-space: 0px; --top-h: 56px; }
  .topbar { padding: 0 10px; gap: 8px; }
  #btn-sb-open { display: grid; flex: none; margin-right: 0; }
  .crumbs { flex: 1 1 auto; max-width: none; justify-content: flex-start; }
  .crumbs > button:not(:last-child), .crumbs .sep { display: none; }
  .crumbs button:last-child { max-width: 100%; }
  .top-right { flex: none; }
  .words, .sync-pill span, #btn-timer, #btn-fav { display: none !important; }
  .sync-pill { padding: 4px 6px; }
  #sidebar { border-radius: 0 20px 20px 0; background: var(--bg-side); -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur); border-right: .5px solid var(--glass-border); }
  .sb-head { padding-top: 10px; }
  .page { padding: 14px 18px 0; }
  .page-icon { font-size: 46px; }
  .page-title { font-size: calc(1.85em * var(--fs-head-scale)); }
  .page-meta { gap: 6px 10px; margin-bottom: 16px; }
  .home { padding: 10px 18px 90px; }
  .home-head h1 { font-size: 28px; margin-bottom: 18px; }
  .recent-grid { grid-template-columns: 1fr; gap: 10px; }
  .recent { min-height: 0; }
  .shelf { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
  .cover { padding: 12px 8px 12px 16px; gap: 8px; }
  .cover-icon { font-size: 26px; }
  .cover-label { padding: 6px; }
  .cover-label b { font-size: 12.5px; }
  .cover-label small { font-size: 10.5px; }
  .nb-view { padding: 0 18px 90px; }
  .nb-hero { gap: 14px; padding-top: 10px; align-items: center; }
  .nb-hero-icon { width: 60px; height: 78px; font-size: 28px; }
  .nb-hero-text { min-width: 0; flex: 1; }
  .nb-hero h1 { font-size: 26px; }
  .nb-actions { width: 100%; flex-wrap: nowrap; }
  .nb-actions .btn { padding: 8px 12px; }
  .nb-actions .btn.primary { flex: 1; }
  .topic-row { padding: 12px 8px 12px calc(8px + var(--d, 0) * 20px); }
  .templates .tpl-grid { grid-template-columns: 1fr 1fr; }
  .tpl { padding: 10px; }
  .tpl span span { display: none; }
  .ai-panel { left: 0; right: 0; width: auto; top: 0; bottom: 0; border-radius: 0; padding-top: var(--safe-t); }
  .ai-bottom { padding-bottom: calc(10px + var(--safe-b) + var(--kb)); }
  .study-actions .btn { flex: 1; min-width: 0; }
  .card-inner { min-height: 210px; }
  .card-face { font-size: 19px; padding: 26px 18px; }
  .toast { bottom: calc(14px + var(--safe-b) + var(--kb)); border-radius: 16px; }
  html.mbar-on .toast { bottom: calc(70px + var(--kb)); }
}
@media (max-width: 600px) {
  .modal-back, .modal-back.wide { align-items: flex-end; padding: 0; }
  .modal { background: var(--bg-pop); width: 100%; max-height: 92vh; border-radius: 22px 22px 0 0; padding-bottom: var(--safe-b); animation: sheet .22s cubic-bezier(.2, .8, .2, 1); }
  .modal::before { content: ""; display: block; width: 38px; height: 5px; border-radius: 3px; background: var(--line); margin: 8px auto -2px; flex: none; }
  .confirm { padding: 12px 20px calc(18px + var(--safe-b)); }
  .confirm .row .btn { flex: 1; padding: 11px; }
  .settings-modal { height: 92vh; }
  .settings-modal::before { display: none; }
  .set-nav { padding-top: 14px; }
  .modal-foot { display: none; }
  .search-modal { height: 86vh; }
  .modal-back:has(.search-modal) { align-items: flex-start; }
  .search-modal { border-radius: 0 0 22px 22px; padding-top: var(--safe-t); }
  .search-modal::before { display: none; }
  .export-modal .seg { display: flex; }
  .export-modal .seg button { flex: 1; }
  .modal-foot2 .row { width: 100%; }
  .modal-foot2 .row .btn { flex: 1; }
  .pop.menu { min-width: 240px; }
  .help-grid { grid-template-columns: 1fr; gap: 2px 0; }
  .help-grid dd { margin-bottom: 8px; }
  .trash-row { gap: 6px; }
  .trash-row .t-title { flex: 1 0 60%; }
}
@keyframes sheet { from { transform: translateY(40px); opacity: .4; } }
@media (max-width: 380px) {
  .shelf { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .mbar button { width: 38px; }
}


/* ================= Druk i PDF ================= */
@page { size: A4; margin: 16mm 15mm 18mm; }
@media print {
  html, body { height: auto !important; overflow: visible !important; background: #fff !important; display: block !important; padding: 0 !important; }
  body > *:not(#print-root) { display: none !important; }
  #print-root { display: block !important; }
}
.print-doc {
  --bg: #fff; --fg: #111418; --fg-2: #4a5160; --fg-3: #7d8494; --line: #d7dae0; --bg-sunk: #f2f3f5; --code-bg: #f2f3f5; --code-fg: #b0284e; --flash-back: #f7f8fa;
  --mark: #fff0a0; --mark-green: #d2f4d0; --mark-blue: #d6e7ff; --mark-pink: #ffd9ea; --mark-orange: #ffe1c2;
  --c-info: #eef4ff; --c-info-b: #cfdcf8; --c-tip: #ecf8f0; --c-tip-b: #c8ead3; --c-warn: #fff6e6; --c-warn-b: #f5ddae; --c-danger: #fdeeee; --c-danger-b: #f3cccc; --c-note: #f4f4f6; --c-note-b: #e3e4e8;
  --tc-red: #c62f35; --tc-orange: #b85f0f; --tc-green: #1d7c45; --tc-blue: #2257c0; --tc-purple: #6d45bd; --tc-gray: #6b7280;
  color: var(--fg); background: #fff; font-family: var(--font-body); font-size: 11pt; line-height: 1.5;
  -webkit-print-color-adjust: exact; print-color-adjust: exact;
}
.print-doc.pf-serif { font-family: "Literata", "New York", Georgia, serif; }
.print-doc.pf-sans { font-family: "Inter", var(--font-system); }
.print-doc.pf-serif h1, .print-doc.pf-serif h2, .print-doc.pf-serif h3 { font-family: "Literata", "New York", Georgia, serif; }
.print-doc.pf-sans h1, .print-doc.pf-sans h2, .print-doc.pf-sans h3 { font-family: "Inter", var(--font-system); }
.print-doc.ps-s { font-size: 10pt; } .print-doc.ps-l { font-size: 12.5pt; }
.print-doc h1, .print-doc h2, .print-doc h3 { font-family: var(--font-head); break-after: avoid; page-break-after: avoid; }
.print-doc h2 { font-size: 1.45em; margin: 1.1em 0 .35em; }
.print-doc h3 { font-size: 1.2em; margin: .9em 0 .3em; }
.print-doc p { margin: .25em 0; orphans: 3; widows: 3; }
.print-doc p.s-empty { height: .6em; }
.print-doc .pr-page.brk { break-before: auto; }
.print-doc.breaks .pr-page.brk { break-before: page; page-break-before: always; }
.print-doc:not(.breaks) .pr-page.brk { margin-top: 2.2em; padding-top: 1.4em; border-top: 1px solid var(--line); }
.pr-head { border-bottom: 2px solid var(--fg); padding-bottom: .5em; margin-bottom: 1em; }
.pr-nb { font: 600 8.5pt/1.4 var(--font-system); letter-spacing: .06em; text-transform: uppercase; color: var(--fg-3); }
.pr-head h1 { font-size: 2em; margin: .1em 0 .1em; letter-spacing: -.01em; line-height: 1.15; }
.pr-meta { font-size: .85em; color: var(--fg-3); }
.print-doc .s-callout, .print-doc .s-flash, .print-doc .s-math, .print-doc .s-code, .print-doc .s-img, .print-doc tr, .print-doc .s-li { break-inside: avoid; page-break-inside: avoid; }
.print-doc .s-table-wrap { overflow: visible; }
.print-doc .s-math { overflow: visible; }
.print-doc .katex { font-size: 1.1em; }
.print-doc .m { white-space: nowrap; }
.print-doc a { color: var(--tc-blue); }
.pr-cover { min-height: 240mm; display: flex; flex-direction: column; justify-content: center; position: relative; padding: 0 6mm; }
.pr-cover-band { position: absolute; left: 0; right: 0; top: 0; height: 10mm; background: var(--nb); border-radius: 2mm; }
.pr-cover-icon { font-size: 44pt; }
.pr-cover h1 { font-size: 34pt; margin: 4mm 0 2mm; letter-spacing: -.02em; }
.pr-cover p { color: var(--fg-2); font-size: 13pt; margin: 0 0 10mm; }
.pr-toc { border-top: 1px solid var(--line); padding-top: 4mm; }
.pr-toc-h { font: 650 9pt var(--font-system); letter-spacing: .06em; text-transform: uppercase; color: var(--fg-3); margin-bottom: 2mm; }
.pr-toc > div:not(.pr-toc-h) { display: flex; justify-content: space-between; gap: 6mm; padding: 1.4mm 0; border-bottom: 1px dotted var(--line); }
.pr-toc > div span:last-child { color: var(--fg-3); white-space: nowrap; }