/* =========================================================
   SHARED COMPONENTS — callouts, badges, hidden, timer, etc.
   ========================================================= */

/* --- Section header (large slide title) ----------------- */
.slide-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--sp-5);
  padding-bottom: var(--sp-3);
  border-bottom: var(--line-thick) solid var(--ink);
  margin-bottom: var(--sp-4);
}
.slide-header h2 {
  font-family: var(--font-serif);
  font-size: var(--fs-h2);
  line-height: 1.0;
  letter-spacing: -0.015em;
  flex: 1 1 auto;
  min-width: 0;
}
.slide-header .slide-kicker {
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  text-transform: uppercase;
  /* ВНИМАНИЕ: uppercase калечит математику — см. правило ниже. */
  letter-spacing: 0.1em;
  color: var(--accent);
  font-weight: 600;
  white-space: nowrap;
  flex: 0 0 auto;
  align-self: baseline;
}

/* Математика в кикере НЕ поднимается в верхний регистр. `text-transform: uppercase` красит
   не только буквы прозы, но и вывод KaTeX, а там регистр — часть смысла: `\(b\)` превращался
   в «B» на слайде, где формула, легенда и все var-блоки пишут строчное b; `\(k_1\)` — в «K₁»
   ровно там, где заметка слайда объясняет, что теперь пишут k₁ вместо K₁; а в эталонной деке
   `\(\mathrm{cv}=\sigma/\mu\)` читался как «CV = Σ/M», то есть сигма превращалась в знак
   суммы. Найдено приёмкой глазами 20.08.2026: ~41 кикер по курсу, включая эталон. */
.slide-header .slide-kicker .katex,
.slide-header .slide-kicker .katex * {
  text-transform: none;
}

/* --- Callouts (key idea, warning, info, exercise) ------- */
.callout {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: var(--sp-3);
  padding: var(--sp-4) var(--sp-5);
  border-radius: var(--r-md);
  align-items: start;
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.4;
  background: var(--accent-soft);
  color: var(--ink);
  margin: var(--sp-3) 0;
}
.callout .callout-icon {
  width: 72px; height: 72px;
  border-radius: var(--r-md);
  background: var(--accent);
  color: white;
  display: grid; place-items: center;
  font-family: var(--font-serif);
  font-size: var(--fs-lead);
  font-weight: 600;
  font-style: italic;
}
/* Только ПРЯМОЙ потомок: правило существует ради заголовка выноски. Без «>» оно
   ловило и <strong> внутри <p> — выделенное слово посреди фразы вставало на свою
   строку и рвало предложение надвое (дека 01, слайды 44 и 53; дека 06, слайд 32). */
.callout .callout-body > strong { display: block; margin-bottom: 4px; }
.callout p { margin: 0; font-size: inherit; }

.callout[data-kind="key"]     { background: var(--c-amber-soft); }
.callout[data-kind="key"]     .callout-icon { background: var(--c-amber); }
.callout[data-kind="warn"]    { background: var(--c-red-soft); }
.callout[data-kind="warn"]    .callout-icon { background: var(--c-red); }
.callout[data-kind="info"]    { background: var(--c-cyan-soft); }
.callout[data-kind="info"]    .callout-icon { background: var(--c-cyan); }
.callout[data-kind="success"] { background: var(--c-green-soft); }
.callout[data-kind="success"] .callout-icon { background: var(--c-green); }
.callout[data-kind="exercise"]{ background: var(--c-violet-soft); }
.callout[data-kind="exercise"] .callout-icon { background: var(--c-violet); }

/* --- Badges & tags --------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-tiny);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 6px 16px;
  border-radius: var(--r-pill);
  background: var(--bg-alt);
  color: var(--ink-2);
  border: var(--hairline) solid var(--rule);
}
.badge[data-color="accent"]  { background: var(--accent-soft);   color: var(--accent-ink); border-color: transparent; }
.badge[data-color="red"]     { background: var(--c-red-soft);    color: var(--c-red); border-color: transparent; }
.badge[data-color="green"]   { background: var(--c-green-soft);  color: var(--c-green-ink); border-color: transparent; }
.badge[data-color="amber"]   { background: var(--c-amber-soft);  color: var(--c-amber-ink); border-color: transparent; }
.badge[data-color="violet"]  { background: var(--c-violet-soft); color: var(--c-violet); border-color: transparent; }
.badge[data-color="cyan"]    { background: var(--c-cyan-soft);   color: var(--c-cyan-ink); border-color: transparent; }

/* --- HIDDEN ANSWER / spoiler ---------------------------- */
/* Use a real <details>/<summary> for native a11y semantics — screen
   readers announce expanded/collapsed state automatically. */
details.hidden-answer {
  display: block;
  margin: var(--sp-3) 0;
  padding: 0;
  background: transparent;
  border: none;
}
details.hidden-answer > summary {
  display: block;
  width: 100%;
  padding: var(--sp-4) var(--sp-5);
  background: var(--bg-alt);
  border: 2px dashed var(--rule-strong);
  border-radius: var(--r-md);
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  color: var(--ink-3);
  text-align: center;
  letter-spacing: 0.04em;
  transition: all var(--dur) var(--ease);
  list-style: none;
}
details.hidden-answer > summary::-webkit-details-marker { display: none; }
details.hidden-answer > summary:hover {
  border-color: var(--accent);
  color: var(--accent);
}
details.hidden-answer > summary::before {
  content: "⊕ ";
  font-family: var(--font-mono);
  font-weight: 600;
}
details.hidden-answer[open] > summary::before { content: "⊖ "; }
details.hidden-answer > .ha-content {
  margin-top: var(--sp-2);
  padding: var(--sp-4) var(--sp-5);
  background: var(--c-green-soft);
  border-left: 8px solid var(--c-green);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.4;
  animation: revealIn var(--dur-slow) var(--ease) both;
}
@keyframes revealIn {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Back-compat — old <div.hidden-answer> markup still works */
div.hidden-answer {
  display: block;
  margin: var(--sp-3) 0;
}
div.hidden-answer .ha-reveal {
  display: block;
  width: 100%;
  padding: var(--sp-4) var(--sp-5);
  background: var(--bg-alt);
  border: 2px dashed var(--rule-strong);
  border-radius: var(--r-md);
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  color: var(--ink-3);
  text-align: center;
  letter-spacing: 0.04em;
  transition: all var(--dur) var(--ease);
}
div.hidden-answer .ha-reveal:hover {
  border-color: var(--accent);
  color: var(--accent);
}
div.hidden-answer .ha-reveal::before {
  content: "⊕ ";
  font-family: var(--font-mono);
  font-weight: 600;
}
div.hidden-answer .ha-content {
  display: none;
  padding: var(--sp-4) var(--sp-5);
  background: var(--c-green-soft);
  border-left: 8px solid var(--c-green);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.4;
  animation: revealIn var(--dur-slow) var(--ease) both;
}
div.hidden-answer.is-revealed .ha-reveal { display: none; }
div.hidden-answer.is-revealed .ha-content { display: block; }

/* --- TIMER / pomodoro ----------------------------------- */
.timer {
  display: inline-grid;
  grid-template-columns: auto auto;
  gap: var(--sp-3);
  align-items: center;
  padding: var(--sp-3) var(--sp-4);
  background: var(--bg-card);
  border: var(--line) solid var(--ink);
  border-radius: var(--r-md);
  font-family: var(--font-mono);
  box-shadow: 6px 6px 0 var(--c-amber-soft);
}
.timer .timer-display {
  font-size: 88px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  color: var(--ink);
  letter-spacing: -0.02em;
  min-width: 240px;
}
.timer .timer-controls {
  display: grid;
  gap: var(--sp-1);
}
.timer .timer-btn {
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--r-sm);
  padding: 10px 20px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: var(--fs-tiny);
  cursor: pointer;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: filter var(--dur) var(--ease);
}
.timer .timer-btn:hover { filter: brightness(1.1); }
.timer .timer-btn[data-act="reset"] {
  background: var(--bg-alt);
  color: var(--ink);
}
.timer.is-warning .timer-display { color: var(--c-amber); }
.timer.is-finished .timer-display { color: var(--c-red); animation: pulseFlash 0.6s infinite; }
@keyframes pulseFlash { 50% { opacity: 0.3; } }
/* Reduced motion: stop the infinite strobe; keep the red finished color. */
@media (prefers-reduced-motion: reduce) {
  .timer.is-finished .timer-display { animation: none; }
}

/* --- QR CODE BLOCK -------------------------------------- */
.qr-block {
  display: inline-grid;
  grid-template-columns: auto 1fr;
  gap: var(--sp-3);
  align-items: center;
  padding: var(--sp-3);
  background: var(--bg-card);
  border: var(--hairline) solid var(--rule);
  border-radius: var(--r-md);
}
.qr-block .qr-canvas {
  width: 220px; height: 220px;
  background: white;
  border-radius: var(--r-sm);
  display: grid; place-items: center;
  overflow: hidden;
}
.qr-block .qr-canvas svg { width: 100%; height: 100%; display: block; }
.qr-block .qr-caption {
  font-family: var(--font-sans);
  font-size: var(--fs-caption-lg);
  color: var(--ink-2);
  max-width: 460px;
  line-height: 1.3;
}
.qr-block .qr-caption .qr-url {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  color: var(--ink-3);
  margin-top: 4px;
  overflow-wrap: anywhere;
  word-break: normal;
}

/* --- Stepper (for incremental animation) ---------------- */
.step-controls {
  position: absolute;
  bottom: var(--sp-4);
  right: var(--sp-4);
  display: flex;
  gap: var(--sp-1);
  background: var(--bg-card);
  border: var(--hairline) solid var(--rule);
  border-radius: var(--r-pill);
  padding: 4px;
  box-shadow: var(--shadow-sm);
  font-family: var(--font-mono);
  z-index: 5;
}
.step-controls button {
  background: transparent;
  border: none;
  padding: 8px 16px;
  border-radius: var(--r-pill);
  cursor: pointer;
  font-size: var(--fs-tiny);
  font-weight: 600;
  color: var(--ink-2);
}
.step-controls button:hover { background: var(--bg-alt); }
.step-controls .step-counter {
  display: inline-flex;
  align-items: center;
  padding: 0 16px;
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-label);
}

/* Step visibility — driven by data-step on slide.
   JS sets `.is-step-hidden` on every [data-step] whose step number is
   greater than the slide's data-current-step. Supports any number of steps. */
[data-step] {
  transition: opacity var(--dur) var(--ease);
}
[data-step].is-step-hidden {
  opacity: 0.08;
  pointer-events: none;
}

/* --- Live code runner ----------------------------------- */
.code-runner {
  margin: var(--sp-3) 0;
  border-radius: var(--r-md);
  overflow: hidden;
  border: var(--hairline) solid var(--rule);
}
.code-runner .runner-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.code-runner .runner-editor {
  background: var(--bg-inset);
  padding: var(--sp-3) var(--sp-4);
}
:root[data-theme="dark"] .code-runner .runner-editor { background: #0B0E14; }
.code-runner .runner-editor pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-code-sm);
  line-height: 1.4;
  white-space: pre-wrap;
}
.code-runner .runner-output {
  background: var(--bg-card);
  padding: var(--sp-3) var(--sp-4);
  border-left: var(--hairline) solid var(--rule);
  display: flex; flex-direction: column;
}
.code-runner .runner-output-head {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-3);
  margin-bottom: var(--sp-2);
  display: flex; justify-content: space-between; align-items: center;
}
.code-runner .runner-run-btn {
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--r-sm);
  padding: 6px 14px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: var(--fs-label);
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.code-runner .runner-out {
  flex: 1;
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  line-height: 1.4;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--ink);
}
.code-runner .runner-out .err { color: var(--c-red); }

/* --- Pen / annotation overlay --------------------------- */
.pen-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 80;
}
.pen-layer.is-active { pointer-events: auto; cursor: crosshair; }
.pen-layer svg { width: 100%; height: 100%; display: block; }

/* --- Progress bar --------------------------------------- */
.progress-bar {
  position: absolute;
  left: 0; right: 0; top: 0;
  height: 5px;
  background: var(--bg-alt);
  z-index: 50;
  pointer-events: none;
}
.progress-bar .progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--c-cyan));
  width: 0%;
  transition: width var(--dur-slow) var(--ease);
}

/* --- Toolbar (lecturer tools) --------------------------- */
.toolbar {
  position: fixed;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px;
  background: rgba(20, 24, 31, 0.92);
  backdrop-filter: blur(12px);
  border-radius: 999px;
  box-shadow: 0 12px 32px rgba(0,0,0,.4);
  z-index: 200;
  font-family: var(--font-sans);
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
  pointer-events: none;
}
.toolbar.is-visible {
  opacity: 1;
  pointer-events: auto;
}
.toolbar button {
  background: transparent;
  border: none;
  width: 44px; height: 44px;
  border-radius: 999px;
  color: #DDD7C7;
  cursor: pointer;
  display: grid; place-items: center;
  font-family: var(--font-sans);
  font-size: var(--fs-fine);
  transition: all var(--dur) var(--ease);
}
.toolbar button:hover { background: rgba(255,255,255,0.1); color: white; }
.toolbar button.is-on { background: var(--accent); color: white; }
.toolbar button svg { width: 22px; height: 22px; }
.toolbar .toolbar-sep {
  width: 1px; height: 24px;
  background: rgba(255,255,255,0.15);
  margin: 0 4px;
}
.toolbar .toolbar-slide-num {
  font-family: var(--font-mono);
  font-size: var(--fs-fine);
  color: #DDD7C7;
  font-variant-numeric: tabular-nums;
  padding: 0 12px;
  min-width: 72px;
  text-align: center;
}

/* --- Overview mode -------------------------------------- */
/* Strategy: wrap each .slide in a .slide-thumb container (done by JS
   when entering overview). The thumb is the grid item with container
   queries; the slide stays at its native 1920×1080 size and we scale
   it via cqw units. All slides get `.is-active` while in overview so
   their full layout (incl. grid-display title / divider / etc.) renders. */
.slide-thumb {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  position: relative;
  border-radius: 10px;
  border: 3px solid transparent;
  outline-offset: 2px;
  cursor: pointer;
  background: var(--bg);
  container-type: inline-size;
  transition:
    border-color var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}
.slide-thumb:hover {
  transform: translateY(-3px);
  border-color: var(--c-amber);
}
.slide-thumb.is-current { border-color: var(--accent); }
.slide-thumb.is-skipped { opacity: 0.35; }
.slide-thumb::after {
  content: attr(data-screen-label);
  position: absolute;
  bottom: 8px; left: 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-fine-xxs);
  color: rgba(255,255,255,0.95);
  background: rgba(10,13,19,0.78);
  padding: 3px 10px;
  border-radius: 4px;
  letter-spacing: 0.05em;
  pointer-events: none;
  z-index: 2;
  max-width: calc(100% - 24px);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.deck.is-overview {
  /* Stage spans the viewport so the grid can scroll. */
}
.deck.is-overview .stage {
  position: static !important;
  transform: none !important;
  width: 100vw !important;
  height: 100vh !important;
  background: #0A0D13;
  overflow: auto;
  padding: 64px 40px 80px;
  box-sizing: border-box;
}
.deck.is-overview .slides {
  position: static;
  inset: auto;
  /* The normal fixed canvas is size-contained by autofit.css. In overview
     this is an auto-height grid: size containment collapses its rows. Each
     .slide-thumb supplies the inline-size context used to scale its slide. */
  container-type: normal;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
  max-width: 1600px;
  margin: 0 auto;
}
/* Each slide keeps its natural 1920×1080 layout — scaled to fit the
   thumbnail container via container-query units. Note the `1920px` in
   the divisor: `scale()` wants a unitless number, and `100cqw / 1920`
   without the px on the rhs yields a length (invalid in `scale()`).
   Dividing length-by-length gives the dimensionless ratio we need. */
.deck.is-overview .slide-thumb .slide {
  position: absolute !important;
  inset: 0 !important;
  width: 1920px !important;
  height: 1080px !important;
  padding: var(--slide-pad-top) var(--slide-pad-x) var(--slide-pad-bottom) var(--slide-pad-x);
  transform: scale(calc(100cqw / 1920px));
  transform-origin: top left;
  pointer-events: none;
  /* Keep each slide type's own background (dividers use inverse colors). */
}
/* Hide chrome inside thumbnails — they're not interactive */
.deck.is-overview .slide__frame,
.deck.is-overview .pen-layer,
.deck.is-overview .step-controls { display: none !important; }
/* Reset any auto-fit transform on .slide-body in overview — the thumb
   wraps the WHOLE slide so we don't want a second scale layer */
.deck.is-overview .slide-body {
  transform: none !important;
  width: 100% !important;
}
.deck.is-overview .toolbar { display: none; }
.deck.is-overview .progress-bar { display: none; }
.deck.is-overview .presenter { display: none; }

/* --- Presenter notes panel ------------------------------ */
.presenter {
  position: fixed;
  right: 20px;
  bottom: 80px;
  width: 460px;
  max-height: 60vh;
  background: rgba(20, 24, 31, 0.96);
  backdrop-filter: blur(16px);
  color: #DDD7C7;
  border-radius: 16px;
  box-shadow: 0 24px 64px rgba(0,0,0,.5);
  padding: 20px 24px;
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.5;
  z-index: 150;
  overflow: auto;
  display: none;
}
.presenter.is-visible { display: block; }
.presenter .presenter-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  font-family: var(--font-mono);
  font-size: var(--fs-fine-xxs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #888;
}
.presenter .presenter-body { color: #ECE7D8; }
.presenter .presenter-body p { font-size: 15px; margin: 0 0 8px; color: inherit; font-family: inherit; }
.presenter .presenter-body em { color: var(--c-amber); font-style: normal; font-weight: 600; }

/* --- Toolbar hint ('press T' on load) ------------------- */
.kbd-hint {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: rgba(20, 24, 31, 0.85);
  color: #ECE7D8;
  padding: 12px 18px;
  border-radius: 999px;
  font-family: var(--font-sans);
  font-size: var(--fs-fine-xs);
  z-index: 100;
  opacity: 0;
  transition: opacity var(--dur-slow) var(--ease);
  pointer-events: none;
}
.kbd-hint.is-visible { opacity: 1; }
.kbd-hint kbd {
  display: inline-block;
  padding: 2px 8px;
  background: rgba(255,255,255,0.15);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: var(--fs-fine-xxs);
  margin: 0 2px;
}

/* --- TOC nav popover (jump to slide) -------------------- */
.toc-pop {
  position: fixed;
  inset: 0;
  background: rgba(10,13,19,0.85);
  backdrop-filter: blur(8px);
  z-index: 300;
  display: none;
  padding: 60px;
  overflow: auto;
}
.toc-pop.is-visible { display: block; }
.toc-pop .toc-pop-inner {
  max-width: 1100px;
  margin: 0 auto;
  background: var(--bg);
  color: var(--ink);
  border-radius: 24px;
  padding: 48px 56px;
}
.toc-pop h3 {
  font-family: var(--font-serif);
  font-size: 44px;
  margin: 0 0 24px;
}
.toc-pop .toc-pop-list {
  display: grid;
  gap: 4px;
}
.toc-pop .toc-pop-row {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  gap: 16px;
  padding: 12px 16px;
  border-radius: 8px;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: var(--fs-label-sm);
  color: var(--ink);
  transition: background var(--dur) var(--ease);
  align-items: baseline;
  text-decoration: none;
}
.toc-pop .toc-pop-row:hover { background: var(--bg-alt); }
.toc-pop .toc-pop-row .pop-num {
  font-family: var(--font-mono);
  color: var(--accent);
  font-weight: 600;
}
.toc-pop .toc-pop-row .pop-type {
  font-family: var(--font-mono);
  font-size: var(--fs-fine-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-3);
}

/* ---- Mobile warning overlay ---- */
.mobile-warning {
  position: fixed;
  inset: 0;
  z-index: 400;
  display: none;
  background: rgba(10,13,19,0.95);
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.mobile-warning.is-visible { display: flex; }
.mobile-warning .mw-inner {
  max-width: 480px;
  background: var(--bg-card);
  color: var(--ink);
  border-radius: 16px;
  padding: 32px 28px;
  text-align: center;
  font-family: var(--font-sans);
}
.mobile-warning .mw-icon {
  font-size: 48px;
  color: var(--c-amber);
  margin-bottom: 12px;
  font-family: var(--font-serif);
}
.mobile-warning h3 {
  font-family: var(--font-serif);
  font-size: var(--fs-label);
  line-height: 1.2;
  margin: 0 0 12px;
  font-weight: 500;
}
.mobile-warning p {
  font-size: var(--fs-fine-sm);
  line-height: 1.4;
  margin: 0 0 20px;
  color: var(--ink-2);
}
.mobile-warning .mw-dismiss {
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 10px 22px;
  font-family: var(--font-sans);
  font-size: var(--fs-fine-sm);
  font-weight: 600;
  cursor: pointer;
}
.mobile-warning .mw-dismiss:hover { filter: brightness(1.1); }

/* --- Misc utility --------------------------------------- */
.row { display: flex; align-items: center; gap: var(--sp-3); }
.row.gap-2 { gap: var(--sp-2); }
.row.gap-5 { gap: var(--sp-5); }
.col { display: flex; flex-direction: column; gap: var(--sp-3); }
.center { text-align: center; }
.mt-2 { margin-top: var(--sp-2); }
.mt-3 { margin-top: var(--sp-3); }
.mt-4 { margin-top: var(--sp-4); }
.mt-5 { margin-top: var(--sp-5); }
.mt-6 { margin-top: var(--sp-6); }
.muted { color: var(--ink-3); }