/* ================================================================
   SQL Досье — themes, layout, components
   ================================================================ */

:root {
  --bg: #0d0e12;
  --bg-2: #111318;
  --panel: #15171d;
  --panel-2: #1b1e26;
  --panel-3: #222632;
  --line: #262a35;
  --line-2: #333847;
  --text: #e8e6e1;
  --muted: #8d919e;
  --faint: #5d6170;
  --accent: #e0b36a;
  --accent-2: #c98f3c;
  --accent-ink: #1b1306;
  --accent-soft: rgba(224, 179, 106, .12);
  --danger: #f07a6f;
  --danger-soft: rgba(240, 122, 111, .1);
  --ok: #7ad3a0;
  --ok-soft: rgba(122, 211, 160, .1);
  --info: #8fb4f5;

  --syn-kw: var(--accent);
  --syn-fn: #9fc3ff;
  --syn-str: #a5d6a7;
  --syn-num: #f5a97f;
  --syn-com: #6b7080;
  --syn-op: #a9adba;
  --syn-id: #d7c4f5;

  --font-ui: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-code: 'JetBrains Mono', ui-monospace, 'Cascadia Code', Consolas, monospace;
  --font-display: 'Playfair Display', Georgia, serif;
  --font-paper: var(--font-ui);

  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 20px 50px -20px rgba(0, 0, 0, .7);
  --deco: none;
}

/* ---------- story themes ---------- */

[data-theme="alibi"] {
  --bg: #0e0c0a; --bg-2: #13100d; --panel: #18140f; --panel-2: #1f1a14; --panel-3: #282118;
  --line: #2f281e; --line-2: #3d3427;
  --text: #ede4d3; --muted: #a09379; --faint: #6c6250;
  --accent: #e3b46a; --accent-2: #c48a3a; --accent-ink: #1d1407; --accent-soft: rgba(227, 180, 106, .12);
  --syn-fn: #f0d29b; --syn-str: #c9d59a; --syn-id: #e8c7a7;
  --font-display: 'Playfair Display', Georgia, serif;
  --font-paper: 'PT Mono', var(--font-code);
  --deco: repeating-linear-gradient(-28deg, rgba(255, 220, 160, .035) 0 26px, transparent 26px 64px);
}
[data-theme="station"] {
  --bg: #060a11; --bg-2: #08101b; --panel: #0b1422; --panel-2: #0f1b2c; --panel-3: #142438;
  --line: #172739; --line-2: #22374f;
  --text: #dceaf6; --muted: #7d93ad; --faint: #4f6580;
  --accent: #4fd6f5; --accent-2: #2aa5d6; --accent-ink: #02131b; --accent-soft: rgba(79, 214, 245, .12);
  --syn-fn: #b0a6ff; --syn-str: #9de6b8; --syn-num: #ffc27a; --syn-id: #a6d0ff;
  --font-display: 'Exo 2', var(--font-ui);
  --deco: linear-gradient(rgba(79, 214, 245, .05) 1px, transparent 1px) 0 0 / 44px 44px,
          linear-gradient(90deg, rgba(79, 214, 245, .05) 1px, transparent 1px) 0 0 / 44px 44px;
}
[data-theme="corp"] {
  --bg: #0a0710; --bg-2: #0e0a16; --panel: #130d1d; --panel-2: #191126; --panel-3: #211733;
  --line: #2a1d3d; --line-2: #3a2954;
  --text: #ece3fb; --muted: #9a8bb5; --faint: #66587f;
  --accent: #ff4fd8; --accent-2: #8f6bff; --accent-ink: #1e0419; --accent-soft: rgba(255, 79, 216, .12);
  --syn-fn: #7ee8ff; --syn-str: #c3f584; --syn-num: #ffb86b; --syn-id: #b9a6ff;
  --font-display: 'Unbounded', var(--font-ui);
  --deco: repeating-linear-gradient(0deg, rgba(255, 79, 216, .03) 0 1px, transparent 1px 4px);
}
[data-theme="loop"] {
  --bg: #07100e; --bg-2: #0a1513; --panel: #0d1b18; --panel-2: #112420; --panel-3: #172e29;
  --line: #19302b; --line-2: #24433c;
  --text: #e1efe9; --muted: #85a69b; --faint: #557268;
  --accent: #7fe3b8; --accent-2: #46b98c; --accent-ink: #03150e; --accent-soft: rgba(127, 227, 184, .11);
  --syn-fn: #ffd58a; --syn-str: #f4b6c9; --syn-num: #b8c6ff; --syn-id: #b6f0d6;
  --font-display: 'Cormorant Garamond', Georgia, serif;
  --deco: repeating-radial-gradient(circle at 85% 10%, rgba(127, 227, 184, .045) 0 1px, transparent 1px 38px);
}
[data-theme="resto"] {
  --bg: #110b09; --bg-2: #160f0c; --panel: #1b130f; --panel-2: #231914; --panel-3: #2d211a;
  --line: #33251c; --line-2: #463327;
  --text: #f3e7dd; --muted: #ae968a; --faint: #78645a;
  --accent: #ff8a5b; --accent-2: #e2653a; --accent-ink: #220b02; --accent-soft: rgba(255, 138, 91, .12);
  --syn-fn: #ffd27d; --syn-str: #b9e08f; --syn-num: #8fd0ff; --syn-id: #ffc3a6;
  --font-display: 'Prata', Georgia, serif;
  --deco: radial-gradient(circle at 1px 1px, rgba(255, 138, 91, .06) 1px, transparent 0) 0 0 / 22px 22px;
}

/* ---------- base ---------- */

*, *::before, *::after { box-sizing: border-box; }
html { color-scheme: dark; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 var(--font-ui);
  -webkit-font-smoothing: antialiased;
  transition: background-color .4s;
}
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(900px 500px at 15% -10%, var(--accent-soft), transparent 70%),
    radial-gradient(700px 500px at 110% 110%, var(--accent-soft), transparent 70%);
  z-index: 0;
}
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: var(--deco);
  z-index: 0;
}
#app { position: relative; z-index: 1; }

a { color: var(--accent); text-decoration: none; }
code {
  font-family: var(--font-code);
  font-size: .86em;
  background: var(--panel-3);
  border: 1px solid var(--line);
  padding: .08em .38em;
  border-radius: 5px;
  color: var(--text);
}
kbd {
  font: 500 11px var(--font-code);
  padding: 2px 6px;
  border-radius: 5px;
  border: 1px solid currentColor;
  opacity: .65;
}
.muted { color: var(--muted); }
button { font: inherit; color: inherit; }
[hidden] { display: none !important; }

::selection { background: color-mix(in srgb, var(--accent) 35%, transparent); }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--line-2); border-radius: 10px; border: 2px solid transparent; background-clip: padding-box; }
::-webkit-scrollbar-track { background: transparent; }

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 36px;
  padding: 0 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-2);
  background: var(--panel-2);
  color: var(--text);
  font-weight: 600;
  font-size: 13.5px;
  cursor: pointer;
  white-space: nowrap;
  transition: background .15s, border-color .15s, transform .1s, box-shadow .15s;
}
.btn:hover { border-color: var(--accent); }
.btn:active { transform: translateY(1px); }
.btn:focus-visible, .tab:focus-visible, .help-card:focus-visible, .lvl:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 6px 20px -8px var(--accent);
}
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; }
.btn.tiny { height: 26px; padding: 0 10px; font-size: 12px; font-weight: 500; gap: 5px; }
.btn.tiny svg { width: 13px; height: 13px; }
.btn.wide { width: 100%; justify-content: center; height: 42px; }
.link {
  background: none;
  border: 0;
  padding: 0;
  color: var(--accent);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  font: 500 11.5px var(--font-code);
  padding: 3px 9px;
  border-radius: 99px;
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  color: var(--accent);
  background: var(--accent-soft);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font: 700 17px var(--font-ui);
  letter-spacing: .02em;
  color: var(--text);
}
.brand-mark {
  font: 700 12px var(--font-code);
  padding: 4px 7px;
  border-radius: 6px;
  background: var(--accent);
  color: var(--accent-ink);
  letter-spacing: .05em;
}
.brand.small { font-size: 14px; }

/* ---------- boot ---------- */

.boot {
  min-height: 100vh;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 14px;
  color: var(--muted);
}
.boot-spin {
  width: 34px; height: 34px;
  border-radius: 50%;
  border: 3px solid var(--line-2);
  border-top-color: var(--accent);
  animation: spin 1s linear infinite;
}
.boot.error { color: var(--danger); text-align: center; padding: 16px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ================================================================
   Home
   ================================================================ */

.home { max-width: 1240px; margin: 0 auto; padding: 22px 28px 48px; }
.home-top { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.progress { display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: 13.5px; }
.progress b { color: var(--text); }
.bar { width: 140px; height: 6px; border-radius: 9px; background: var(--panel-3); overflow: hidden; }
.bar i { display: block; height: 100%; background: var(--accent); border-radius: inherit; transition: width .4s; }

.hero { padding: 72px 0 52px; max-width: 760px; }
.eyebrow {
  font: 500 12px var(--font-code);
  text-transform: uppercase;
  letter-spacing: .14em;
  color: var(--accent);
  margin: 0 0 18px;
}
.hero h1 {
  font: 700 clamp(36px, 6vw, 64px)/1.05 'Playfair Display', Georgia, serif;
  margin: 0 0 22px;
  letter-spacing: -.01em;
}
.hero h1 span { font-style: italic; color: var(--accent); }
.lead { font-size: 17px; color: var(--muted); margin: 0; max-width: 620px; }

.stories {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 18px;
}
.story {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px 24px 22px;
  border-radius: 18px;
  background:
    linear-gradient(160deg, color-mix(in srgb, var(--accent) 9%, transparent), transparent 55%),
    var(--deco),
    var(--panel);
  border: 1px solid var(--line);
  color: var(--text);
  box-shadow: var(--shadow);
  transition: transform .25s, border-color .25s;
}
.story:hover { transform: translateY(-3px); border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); }
.story-art {
  position: absolute;
  right: -26px;
  top: -26px;
  width: 170px;
  height: 170px;
  color: var(--accent);
  opacity: .14;
  pointer-events: none;
  transition: opacity .25s, transform .4s;
}
.story:hover .story-art { opacity: .24; transform: rotate(-6deg) scale(1.04); }
.story-art svg { width: 100%; height: 100%; }
.story-top { display: flex; align-items: center; gap: 10px; }
.story-num { font: 700 12px var(--font-code); color: var(--accent); }
.story-kicker { font: 500 12px var(--font-code); color: var(--muted); text-transform: uppercase; letter-spacing: .08em; }
.story-title { font: 600 28px/1.15 var(--font-display); margin: 0; color: var(--text); }
[data-theme="corp"] .story-title, [data-theme="corp"] .case-title { font-size: 22px; letter-spacing: -.01em; }
[data-theme="loop"] .story-title { font-size: 32px; font-style: italic; }
.story-blurb { margin: 0; color: var(--muted); font-size: 14.5px; }
.story-levels { display: grid; gap: 8px; margin-top: auto; padding-top: 6px; }
.lvl {
  display: grid;
  grid-template-columns: 28px 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-radius: 10px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--text);
  transition: border-color .15s, background .15s;
}
.lvl:hover { border-color: var(--accent); background: var(--panel-3); }
.lvl-n {
  width: 28px; height: 28px;
  display: grid; place-items: center;
  border-radius: 50%;
  font: 700 12px var(--font-code);
  border: 1px solid var(--line-2);
  color: var(--muted);
}
.lvl.done .lvl-n { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.lvl-t { font-weight: 600; font-size: 14.5px; }
.lvl-s { font-size: 12.5px; color: var(--muted); }
.lvl.done .lvl-s { color: var(--accent); }
.story-progress { height: 3px; border-radius: 3px; background: var(--panel-3); overflow: hidden; }
.story-progress i { display: block; height: 100%; background: var(--accent); }

.home-foot {
  margin-top: 42px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
  color: var(--faint);
  font-size: 13px;
}

/* ================================================================
   Level layout
   ================================================================ */

.level { height: 100vh; display: flex; flex-direction: column; }
.topbar {
  flex: none;
  height: 54px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  padding: 0 18px;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(10px);
}
.back { color: var(--muted); font-size: 14px; font-weight: 500; justify-self: start; }
.back:hover { color: var(--accent); }
.crumbs { display: flex; align-items: center; gap: 9px; font-size: 13.5px; color: var(--muted); }
.crumb-icon { width: 18px; height: 18px; color: var(--accent); }
.crumb-story { color: var(--text); font-weight: 600; }
.sep { color: var(--faint); }
.topbar .brand { justify-self: end; }

.level-grid {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(330px, 400px) 1fr;
}

/* ---------- dossier ---------- */

.dossier {
  min-height: 0;
  overflow-y: auto;
  border-right: 1px solid var(--line);
  background: linear-gradient(180deg, color-mix(in srgb, var(--panel) 85%, transparent), color-mix(in srgb, var(--bg-2) 85%, transparent));
}
.dossier-inner { padding: 26px 24px 32px; display: flex; flex-direction: column; gap: 18px; }
.case-no { margin: 0; font: 500 11.5px var(--font-code); text-transform: uppercase; letter-spacing: .12em; color: var(--accent); }
.case-title { margin: -6px 0 0; font: 600 30px/1.12 var(--font-display); }
[data-theme="loop"] .case-title { font-style: italic; font-size: 34px; }
.brief {
  font-family: var(--font-paper);
  font-size: 14.5px;
  color: color-mix(in srgb, var(--text) 88%, var(--muted));
}
[data-theme="alibi"] .brief { font-size: 14px; line-height: 1.65; }
.brief p { margin: 0 0 10px; }
.brief em { color: var(--accent); font-style: normal; }
.brief blockquote {
  margin: 0 0 10px;
  padding: 10px 14px;
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 0 8px 8px 0;
  font-family: var(--font-code);
  font-size: 13px;
}
.brief .warn {
  padding: 10px 12px;
  border: 1px dashed color-mix(in srgb, var(--accent) 45%, transparent);
  border-radius: 8px;
  font-family: var(--font-ui);
  font-size: 13.5px;
}
.block h3 {
  margin: 0 0 10px;
  font: 600 11.5px var(--font-ui);
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--muted);
}
.objectives { margin: 0; padding: 0; list-style: none; counter-reset: obj; display: grid; gap: 9px; }
.objectives li {
  counter-increment: obj;
  position: relative;
  padding-left: 32px;
  font-size: 14px;
}
.objectives li::before {
  content: counter(obj);
  position: absolute;
  left: 0; top: 1px;
  width: 22px; height: 22px;
  display: grid; place-items: center;
  border-radius: 6px;
  background: var(--panel-3);
  border: 1px solid var(--line-2);
  font: 700 11px var(--font-code);
  color: var(--accent);
}

.help { display: grid; gap: 10px; }
.help h3 { margin-bottom: 0; }
.help-card {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  text-align: left;
  padding: 11px 14px;
  border-radius: 10px;
  border: 1px solid var(--line-2);
  background: var(--panel-2);
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
.help-card:hover { border-color: var(--accent); background: var(--panel-3); }
.help-card b { display: block; font-size: 14px; }
.help-card small { display: block; color: var(--muted); font-size: 12.5px; }
.help-icon {
  flex: none;
  width: 34px; height: 34px;
  display: grid; place-items: center;
  border-radius: 9px;
  background: var(--accent-soft);
  color: var(--accent);
}
.help-icon svg { width: 19px; height: 19px; }
.lesson-btn { border-color: color-mix(in srgb, var(--accent) 45%, var(--line-2)); }

.hint-list { display: grid; gap: 8px; }
.hint-list:empty { display: none; }
.hint {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
  font-size: 13.5px;
  animation: pop .25s ease-out;
}
.hint p { margin: 0; }
.hint-n { font: 700 12px var(--font-code); color: var(--accent); padding-top: 1px; }
.hint.solution pre { margin: 8px 0 0; }
.hint > div { min-width: 0; }
@keyframes pop { from { opacity: 0; transform: translateY(-4px); } }

.answer {
  margin-top: 4px;
  padding: 16px;
  border-radius: 14px;
  border: 1px solid color-mix(in srgb, var(--accent) 40%, var(--line));
  background:
    linear-gradient(135deg, var(--accent-soft), transparent 70%),
    var(--panel-2);
  display: grid;
  gap: 10px;
}
.answer-label { margin: 0; font-weight: 600; font-size: 14px; }
.answer-row { display: flex; gap: 8px; }
.answer-input {
  flex: 1;
  min-width: 0;
  height: 40px;
  padding: 0 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-2);
  background: var(--bg-2);
  color: var(--text);
  font: 500 14px var(--font-ui);
}
.answer-input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.answer-row .btn { height: 40px; }
.answer-msg:empty { display: none; }
.answer-msg { font-size: 13.5px; }
.answer-msg.bad {
  color: color-mix(in srgb, var(--danger) 85%, var(--text));
  background: var(--danger-soft);
  border: 1px solid color-mix(in srgb, var(--danger) 30%, transparent);
  padding: 9px 12px;
  border-radius: 8px;
}
.done-row { display: none; color: var(--accent); font-weight: 600; font-size: 13.5px; }
.answer.is-done .done-row { display: block; }
.answer.shake { animation: shake .4s; }
@keyframes shake {
  20%, 60% { transform: translateX(-5px); }
  40%, 80% { transform: translateX(5px); }
}

/* ---------- work area ---------- */

.work { min-width: 0; min-height: 0; display: flex; flex-direction: column; }
.tabs {
  flex: none;
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 8px 14px 0;
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
}
.tab {
  position: relative;
  padding: 9px 14px 11px;
  border: 0;
  background: none;
  color: var(--muted);
  font-weight: 600;
  font-size: 13.5px;
  cursor: pointer;
  border-radius: 8px 8px 0 0;
  white-space: nowrap;
}
.tab:hover { color: var(--text); background: var(--panel-2); }
.tab.active { color: var(--text); }
.tab.active::after {
  content: '';
  position: absolute;
  left: 10px; right: 10px; bottom: -1px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
}
.work.split .tab[data-tab="ws"] { display: none; }
.tab .dot {
  position: absolute;
  top: 8px; right: 6px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
}
.spacer { flex: 1; }
.split-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  margin-bottom: 6px;
  border-radius: 8px;
  border: 1px solid var(--line-2);
  background: none;
  color: var(--muted);
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
}
.split-toggle svg { width: 15px; height: 15px; }
.split-toggle:hover { color: var(--text); border-color: var(--accent); }
.split-toggle.on { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 50%, transparent); background: var(--accent-soft); }

.panes { flex: 1; min-height: 0; display: grid; }
.work.split .panes { grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); }
.pane { min-width: 0; min-height: 0; overflow: auto; }
.work.split .pane:not(.pane-ws) { border-left: 1px solid var(--line); background: color-mix(in srgb, var(--panel) 50%, transparent); }

.pane-ws { display: flex; flex-direction: column; overflow: hidden; padding: 14px 16px 0; }
.editor-host { flex: none; height: 250px; min-height: 110px; }

/* ---------- editor ---------- */

.ed {
  height: 100%;
  display: flex;
  border-radius: var(--radius);
  border: 1px solid var(--line-2);
  background: var(--bg-2);
  overflow: hidden;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .02);
  transition: border-color .15s, box-shadow .15s;
}
.ed:focus-within { border-color: color-mix(in srgb, var(--accent) 60%, var(--line-2)); box-shadow: 0 0 0 3px var(--accent-soft); }
.ed-gutter {
  flex: none;
  width: 44px;
  overflow: hidden;
  border-right: 1px solid var(--line);
  background: color-mix(in srgb, var(--panel) 60%, transparent);
}
.ed-gutter-inner {
  padding: 14px 10px 14px 0;
  text-align: right;
  font: 12.5px/1.65 var(--font-code);
  color: var(--faint);
}
.ed-body { position: relative; flex: 1; min-width: 0; overflow: hidden; }
.ed-hl, .ed-input {
  margin: 0;
  padding: 14px 16px;
  font: 13.5px/1.65 var(--font-code);
  font-variant-ligatures: none;
  tab-size: 2;
  white-space: pre;
  letter-spacing: 0;
  word-spacing: 0;
}
.ed-gutter-inner { font-size: 12.5px; line-height: calc(13.5px * 1.65); }
.ed-hl code { all: unset; font: inherit; white-space: inherit; }
.ed-hl {
  position: absolute;
  top: 0; left: 0;
  min-width: 100%;
  pointer-events: none;
  color: var(--text);
}
.ed-input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  resize: none;
  border: 0;
  outline: none;
  background: transparent;
  color: transparent;
  -webkit-text-fill-color: transparent;
  caret-color: var(--accent);
  overflow: auto;
}
.ed-input::selection { background: color-mix(in srgb, var(--accent) 30%, transparent); -webkit-text-fill-color: transparent; }

.t-kw { color: var(--syn-kw); font-weight: 600; }
.t-fn { color: var(--syn-fn); }
.t-str { color: var(--syn-str); }
.t-num { color: var(--syn-num); }
.t-com { color: var(--syn-com); font-style: italic; }
.t-op { color: var(--syn-op); }
.t-id { color: var(--syn-id); }

.ed-ac {
  position: absolute;
  z-index: 5;
  min-width: 220px;
  max-width: 320px;
  margin: 0;
  padding: 5px;
  list-style: none;
  border-radius: 10px;
  border: 1px solid var(--line-2);
  background: var(--panel-2);
  box-shadow: var(--shadow);
  font: 13px var(--font-code);
}
.ed-ac li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 8px;
  border-radius: 6px;
  cursor: pointer;
  white-space: nowrap;
}
.ed-ac li.on { background: var(--accent-soft); color: var(--accent); }
.ed-ac small { margin-left: auto; color: var(--faint); font-size: 11px; }
.ac-kind {
  flex: none;
  width: 18px; height: 18px;
  display: grid; place-items: center;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 700;
  background: var(--panel-3);
  color: var(--muted);
}
.k-table { color: var(--syn-num); }
.k-col { color: var(--syn-str); }
.k-kw { color: var(--syn-kw); }
.k-fn { color: var(--syn-fn); }

.resizer {
  flex: none;
  height: 12px;
  cursor: row-resize;
  position: relative;
  touch-action: none;
}
.resizer::after {
  content: '';
  position: absolute;
  left: 50%; top: 5px;
  width: 44px; height: 3px;
  margin-left: -22px;
  border-radius: 3px;
  background: var(--line-2);
}
.resizer:hover::after { background: var(--accent); }

.toolbar { flex: none; display: flex; align-items: center; gap: 8px; padding-bottom: 12px; flex-wrap: wrap; }
.run-status { font: 12px var(--font-code); color: var(--muted); }
.run-status.bad { color: var(--danger); }

.history-wrap { position: relative; }
.history-pop {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: 20;
  width: min(520px, 80vw);
  max-height: 360px;
  overflow: auto;
  padding: 6px;
  border-radius: 12px;
  border: 1px solid var(--line-2);
  background: var(--panel-2);
  box-shadow: var(--shadow);
}
.history-pop p { margin: 10px; font-size: 13px; }
.hist-item {
  display: block;
  width: 100%;
  text-align: left;
  border: 0;
  background: none;
  padding: 8px 10px;
  border-radius: 8px;
  cursor: pointer;
}
.hist-item + .hist-item { border-top: 1px solid var(--line); }
.hist-item:hover { background: var(--panel-3); }
.hist-item pre { margin: 0; font: 12px/1.5 var(--font-code); white-space: pre-wrap; max-height: 5.5em; overflow: hidden; }

/* ---------- results ---------- */

.results { flex: 1; min-height: 0; overflow: auto; padding-bottom: 16px; display: grid; gap: 14px; align-content: start; }
.empty {
  border: 1px dashed var(--line-2);
  border-radius: var(--radius);
  padding: 26px;
  text-align: center;
  color: var(--muted);
}
.empty p { margin: 4px 0; }
.empty .muted { font-size: 13px; color: var(--faint); }

.result { border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); overflow: hidden; }
.result-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 10px 8px 14px;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
  color: var(--muted);
}
.result-head b { color: var(--text); }
.table-wrap { overflow: auto; max-height: 460px; }
table { border-collapse: collapse; width: 100%; font: 13px/1.45 var(--font-code); }
th {
  position: sticky;
  top: 0;
  z-index: 1;
  text-align: left;
  padding: 8px 14px;
  background: var(--panel-2);
  color: var(--accent);
  font-weight: 600;
  border-bottom: 1px solid var(--line-2);
  white-space: nowrap;
}
td { padding: 7px 14px; border-bottom: 1px solid var(--line); vertical-align: top; max-width: 520px; }
tbody tr:nth-child(even) td { background: color-mix(in srgb, var(--panel-2) 45%, transparent); }
tbody tr:hover td { background: var(--accent-soft); }
td.num { text-align: right; color: var(--syn-num); white-space: nowrap; }
td.null { color: var(--faint); font-style: italic; }
tbody { counter-reset: rn; }
tbody tr { counter-increment: rn; }
.rn { width: 1%; color: var(--faint); text-align: right; padding-right: 6px; font-size: 11.5px; white-space: nowrap; }
td.rn::before { content: counter(rn); }
.more { padding: 8px 14px; font-size: 12.5px; color: var(--muted); border-top: 1px solid var(--line); }

.msg { border-radius: var(--radius); padding: 14px 16px; border: 1px solid; }
.msg p { margin: 6px 0 0; font-size: 14px; }
.msg-title { font-weight: 700; font-size: 13px; text-transform: uppercase; letter-spacing: .08em; }
.msg.error { border-color: color-mix(in srgb, var(--danger) 40%, transparent); background: var(--danger-soft); }
.msg.error .msg-title { color: var(--danger); }
.msg.ok { border-color: color-mix(in srgb, var(--ok) 35%, transparent); background: var(--ok-soft); }
.msg.ok .msg-title { color: var(--ok); }
.msg.info { border-color: var(--line-2); background: var(--panel); }
.msg.info .msg-title { color: var(--muted); }
.msg .raw { display: block; margin-top: 8px; background: transparent; border: 0; padding: 0; color: color-mix(in srgb, var(--danger) 80%, var(--text)); }

/* ---------- side panes ---------- */

.pane-schema, .pane-ref { padding: 18px 20px 28px; }
.pane-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 16px; flex-wrap: wrap; }
.pane-head h3 { margin: 0 0 4px; font: 600 20px var(--font-display); }
.pane-head p { margin: 0; font-size: 13px; max-width: 560px; }

.schema-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 12px; }
.tcard { border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); overflow: hidden; }
.tcard-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 10px 10px 14px;
  background: linear-gradient(90deg, var(--accent-soft), transparent);
  border-bottom: 1px solid var(--line);
}
.tname, .cname { border: 0; background: none; padding: 0; cursor: pointer; font-family: var(--font-code); text-align: left; }
.tname { font-weight: 700; font-size: 14px; color: var(--accent); }
.tname:hover, .cname:hover { text-decoration: underline; text-underline-offset: 3px; }
.tcount { margin-left: auto; font-size: 11.5px; color: var(--muted); white-space: nowrap; }
.cols { list-style: none; margin: 0; padding: 6px 0; }
.cols li { display: flex; align-items: center; gap: 8px; padding: 4px 14px; font-size: 12.5px; flex-wrap: wrap; }
.cname { font-size: 12.5px; color: var(--text); }
.ctype { font: 11px var(--font-code); color: var(--faint); }
.badge {
  font: 600 10px var(--font-code);
  padding: 1px 6px;
  border-radius: 5px;
  border: 1px solid var(--line-2);
  color: var(--muted);
}
.badge.pk { color: var(--syn-num); border-color: color-mix(in srgb, var(--syn-num) 40%, transparent); }
.badge.fk { color: var(--syn-fn); border-color: color-mix(in srgb, var(--syn-fn) 35%, transparent); }
.badge.here { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 45%, transparent); background: var(--accent-soft); }

/* ---------- schema view switch ---------- */

.schema-tools { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.seg {
  display: inline-flex;
  padding: 3px;
  border-radius: 9px;
  border: 1px solid var(--line-2);
  background: var(--bg-2);
}
.seg-btn {
  height: 28px;
  padding: 0 12px;
  border: 0;
  border-radius: 6px;
  background: none;
  color: var(--muted);
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
}
.seg-btn:hover { color: var(--text); }
.seg-btn.on { background: var(--accent); color: var(--accent-ink); }
.seg.zoom .seg-btn { padding: 0 9px; min-width: 30px; }
.seg.zoom .zoom-val { font: 500 11.5px var(--font-code); min-width: 48px; }

/* ---------- UML diagram ---------- */

.diagram-host {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 1px 1px, color-mix(in srgb, var(--muted) 22%, transparent) 1px, transparent 0) 0 0 / 20px 20px,
    var(--bg-2);
  overflow: hidden;
}
.uml-viewport { overflow: auto; max-height: calc(100vh - 220px); min-height: 280px; }
.uml-sizer { width: var(--w, 100%); height: var(--h, 300px); position: relative; }
.uml-canvas {
  position: absolute;
  top: 0; left: 0;
  transform: scale(var(--zoom, 1));
  transform-origin: 0 0;
}
.uml-edges { position: absolute; inset: 0; overflow: visible; pointer-events: none; }
.uml-edge path {
  fill: none;
  stroke: color-mix(in srgb, var(--accent) 55%, var(--muted));
  stroke-width: 1.6;
  opacity: .75;
  transition: opacity .15s, stroke-width .15s;
}
.uml-edge text { fill: var(--muted); font: 600 12px var(--font-code); }
.uml-arrowhead { fill: color-mix(in srgb, var(--accent) 55%, var(--muted)); }
.uml-edge.hl path { stroke: var(--accent); stroke-width: 2.4; opacity: 1; }
.uml-edge.hl text { fill: var(--accent); }

.uml-box {
  position: absolute;
  width: max-content;
  min-width: 210px;
  max-width: 300px;
  border-radius: 10px;
  border: 1px solid var(--line-2);
  background: var(--panel);
  box-shadow: 0 10px 28px -14px rgba(0, 0, 0, .8);
  transition: opacity .15s, border-color .15s, box-shadow .15s;
}
.uml-box:hover { border-color: color-mix(in srgb, var(--accent) 60%, var(--line-2)); }
.uml-box.dim { opacity: .45; }
.uml-box.dragging { box-shadow: 0 18px 40px -12px rgba(0, 0, 0, .9); border-color: var(--accent); z-index: 2; transition: none; }
.uml-head {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  column-gap: 8px;
  padding: 7px 12px 8px;
  border-bottom: 1px solid var(--line-2);
  border-radius: 10px 10px 0 0;
  background: linear-gradient(180deg, var(--accent-soft), transparent), var(--panel-2);
  cursor: grab;
  user-select: none;
  touch-action: none;
}
.uml-box.dragging .uml-head { cursor: grabbing; }
.uml-stereo { grid-column: 1 / -1; font: italic 10.5px var(--font-code); color: var(--faint); text-align: center; }
.uml-name {
  justify-self: center;
  grid-column: 1;
  border: 0;
  background: none;
  padding: 0;
  font: 700 13.5px var(--font-code);
  color: var(--accent);
  cursor: pointer;
}
.uml-count { font: 10.5px var(--font-code); color: var(--faint); }
.uml-cols { list-style: none; margin: 0; padding: 5px 0; }
.uml-cols li {
  display: grid;
  grid-template-columns: 24px 1fr auto;
  align-items: center;
  gap: 6px;
  padding: 3px 12px;
  font-size: 12.5px;
}
.uml-cols li.is-pk { background: color-mix(in srgb, var(--syn-num) 7%, transparent); }
.uml-key { font: 700 9.5px var(--font-code); color: var(--faint); }
.is-pk .uml-key { color: var(--syn-num); }
.is-fk .uml-key { color: var(--syn-fn); }
.uml-col {
  border: 0;
  background: none;
  padding: 0;
  text-align: left;
  font: 12.5px var(--font-code);
  color: var(--text);
  cursor: pointer;
  white-space: nowrap;
}
.is-pk .uml-col { text-decoration: underline; text-underline-offset: 3px; text-decoration-color: color-mix(in srgb, var(--syn-num) 60%, transparent); }
.uml-name:hover, .uml-col:hover { color: var(--accent); }
.uml-type { font: 11px var(--font-code); color: var(--faint); }

.pane-notes { display: flex; flex-direction: column; padding: 16px 18px 18px; gap: 10px; }
.notes-head { font-size: 13px; color: var(--muted); }
.notes {
  flex: 1;
  min-height: 300px;
  resize: none;
  padding: 16px 18px;
  border-radius: var(--radius);
  border: 1px solid var(--line-2);
  color: var(--text);
  font: 13px/1.7 var(--font-code);
  background:
    repeating-linear-gradient(180deg, transparent 0 calc(1.7em - 1px), color-mix(in srgb, var(--line) 70%, transparent) calc(1.7em - 1px) 1.7em) 0 16px / 100% 1.7em,
    var(--bg-2);
  background-attachment: local;
}
.notes:focus { outline: none; border-color: var(--accent); }

.ref-search {
  width: 260px;
  max-width: 100%;
  height: 36px;
  padding: 0 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-2);
  background: var(--bg-2);
  color: var(--text);
  font: 13.5px var(--font-ui);
}
.ref-search:focus { outline: none; border-color: var(--accent); }
.ref-group + .ref-group { margin-top: 22px; }
.ref-group h5 { margin: 0 0 10px; font: 600 11.5px var(--font-ui); text-transform: uppercase; letter-spacing: .12em; color: var(--muted); }
.ref-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 12px; }
.ref-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 14px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--panel);
}
.ref-card header { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.ref-card h4 { margin: 0; font: 700 14px var(--font-code); color: var(--accent); }
.ref-card p { margin: 0; font-size: 13.5px; color: color-mix(in srgb, var(--text) 85%, var(--muted)); }
.ref-card .btn { align-self: flex-start; margin-top: auto; }

pre.code {
  margin: 0;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: var(--bg-2);
  border: 1px solid var(--line);
  font: 12.5px/1.6 var(--font-code);
  overflow-x: auto;
  white-space: pre;
}

/* ---------- modal ---------- */

.modal-back {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 24px 16px;
  background: rgba(0, 0, 0, .62);
  backdrop-filter: blur(6px);
  animation: fade .2s;
  overflow-y: auto;
}
.modal {
  position: relative;
  width: min(640px, 100%);
  padding: 32px 30px 26px;
  border-radius: 20px;
  border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--line));
  background:
    linear-gradient(160deg, var(--accent-soft), transparent 50%),
    var(--panel);
  box-shadow: 0 40px 100px -30px rgba(0, 0, 0, .9);
  animation: rise .35s cubic-bezier(.2, .9, .3, 1.2);
}
.modal-back.lesson .modal { width: min(860px, 100%); }
.modal h2 { margin: 6px 0 14px; font: 600 28px/1.15 var(--font-display); }
.modal-x {
  position: absolute;
  top: 12px; right: 14px;
  width: 34px; height: 34px;
  border-radius: 50%;
  border: 1px solid var(--line-2);
  background: var(--panel-2);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  color: var(--muted);
}
.modal-x:hover { color: var(--text); border-color: var(--accent); }
.modal-actions { display: flex; flex-wrap: wrap; gap: 10px; justify-content: flex-end; margin-top: 22px; align-items: center; }
.all-done { color: var(--accent); font-weight: 600; }
.debrief { font-size: 15px; }
.debrief p { margin: 0 0 10px; }
.solution { margin-top: 14px; border: 1px solid var(--line); border-radius: var(--radius); padding: 10px 14px; background: var(--panel-2); }
.solution summary { cursor: pointer; font-weight: 600; font-size: 14px; color: var(--accent); }
.solution pre { margin-top: 10px; }
.solution p { font-size: 12.5px; margin: 8px 0 0; }
.lesson-intro { font-size: 15px; margin: 0 0 18px; }
.lesson-grid { grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); }

.stamp {
  display: inline-block;
  margin-bottom: 14px;
  padding: 6px 16px;
  border: 3px solid var(--accent);
  border-radius: 6px;
  color: var(--accent);
  font: 700 18px var(--font-code);
  text-transform: uppercase;
  letter-spacing: .14em;
  transform: rotate(-4deg);
  animation: stamp .45s cubic-bezier(.2, 1.4, .4, 1) .1s both;
  mix-blend-mode: screen;
}
@keyframes stamp { from { opacity: 0; transform: rotate(-4deg) scale(2.2); } }
@keyframes fade { from { opacity: 0; } }
@keyframes rise { from { opacity: 0; transform: translateY(16px) scale(.98); } }

.toast {
  position: fixed;
  left: 50%;
  bottom: 26px;
  z-index: 200;
  transform: translateX(-50%);
  padding: 10px 18px;
  border-radius: 99px;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 600;
  font-size: 13.5px;
  box-shadow: var(--shadow);
  animation: rise .25s;
  transition: opacity .4s, transform .4s;
}
.toast.out { opacity: 0; transform: translate(-50%, 8px); }

/* ================================================================
   Responsive
   ================================================================ */

@media (max-width: 1180px) {
  .split-toggle { display: none; }
}
@media (max-width: 900px) {
  .level { height: auto; min-height: 100vh; }
  .level-grid { grid-template-columns: 1fr; }
  .dossier { border-right: 0; border-bottom: 1px solid var(--line); overflow: visible; }
  .work { min-height: 88vh; }
  .topbar { grid-template-columns: auto 1fr; padding: 0 16px; }
  .topbar .brand { display: none; }
  .crumbs { justify-self: end; }
  .crumb-story { display: none; }
}
@media (max-width: 560px) {
  .home { padding: 18px 16px 40px; }
  .hero { padding: 44px 0 34px; }
  .stories { grid-template-columns: 1fr; }
  .story { padding: 20px 18px; }
  .progress .bar { width: 70px; }
  .dossier-inner { padding: 20px 16px 26px; }
  .pane-ws { padding: 12px 12px 0; }
  .pane-schema, .pane-ref { padding: 16px; }
  .btn kbd { display: none; }
  .answer-row { flex-direction: column; }
  .modal { padding: 26px 18px 20px; }
  .modal h2 { font-size: 23px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}