/* Staq Workflow — design tokens */
:root {
  --bg: oklch(0.16 0.005 250);
  --bg-1: oklch(0.18 0.006 250);
  --bg-2: oklch(0.21 0.007 250);
  --bg-3: oklch(0.24 0.008 250);
  --fg: oklch(0.96 0.003 250);
  --fg-2: oklch(0.78 0.005 250);
  --fg-3: oklch(0.58 0.006 250);
  --fg-4: oklch(0.42 0.006 250);
  --border: oklch(0.30 0.008 250);
  --border-2: oklch(0.36 0.010 250);
  --accent: oklch(0.88 0.22 125);
  --accent-2: oklch(0.72 0.20 125);
  --accent-ink: oklch(0.18 0.08 125);
  --danger: oklch(0.70 0.18 30);
  --ok: oklch(0.80 0.16 150);
  --warn: oklch(0.82 0.16 85);
  --radius: 4px;
  --radius-lg: 6px;
  --mono: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  --sans: 'Inter Tight', 'Inter', system-ui, sans-serif;
  --container: 1280px;
  --pad: 24px;
}

[data-theme="light"] {
  --bg: oklch(0.985 0.002 250);
  --bg-1: oklch(0.97 0.003 250);
  --bg-2: oklch(0.94 0.004 250);
  --bg-3: oklch(0.91 0.005 250);
  --fg: oklch(0.18 0.006 250);
  --fg-2: oklch(0.35 0.006 250);
  --fg-3: oklch(0.48 0.007 250);
  --fg-4: oklch(0.62 0.006 250);
  --border: oklch(0.86 0.005 250);
  --border-2: oklch(0.78 0.006 250);
  --accent: oklch(0.72 0.21 125);
  --accent-2: oklch(0.58 0.19 125);
  --accent-ink: oklch(0.22 0.10 125);
}

[data-accent="indigo"] {
  --accent: oklch(0.72 0.19 265);
  --accent-2: oklch(0.58 0.17 265);
  --accent-ink: oklch(0.96 0.02 265);
}
[data-accent="orange"] {
  --accent: oklch(0.76 0.18 55);
  --accent-2: oklch(0.62 0.16 55);
  --accent-ink: oklch(0.18 0.08 55);
}
[data-accent="cyan"] {
  --accent: oklch(0.80 0.14 210);
  --accent-2: oklch(0.62 0.13 210);
  --accent-ink: oklch(0.16 0.05 210);
}

/* density */
[data-density="compact"] { --pad: 16px; }
[data-density="cozy"]    { --pad: 24px; }
[data-density="airy"]    { --pad: 36px; }

/* node style */
[data-nodes="sharp"]   { --node-radius: 0px; }
[data-nodes="rounded"] { --node-radius: 6px; }
[data-nodes="dense"]   { --node-radius: 2px; }

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: 'ss01', 'cv11';
}

a { color: inherit; text-decoration: none; }

.mono { font-family: var(--mono); font-feature-settings: 'zero', 'ss02'; }
.label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-3);
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--pad);
}

/* ===== Nav ===== */
.nav {
  position: sticky;
  top: 0;
  /* Выше контента страницы и панели tweaks; мобильное меню — внутри этого контекста */
  z-index: 200;
  /* Без backdrop-filter: иначе в Chromium fixed-дети позиционируются от «широкого» предка,
     left+right дают ширину ~layout viewport (сотни px), а не рамку телефона. */
  background: color-mix(in oklch, var(--bg) 92%, transparent);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 56px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--fg);
  text-decoration: none;
}
.logo:hover { color: var(--fg); }
.logo-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  object-fit: contain;
  display: block;
}
.nav-links {
  display: flex;
  gap: 22px;
  font-size: 14px;
  color: var(--fg-2);
}
.nav-links a {
  padding: 6px 0;
  border-bottom: 1px solid transparent;
  transition: color .15s, border-color .15s;
}
.nav-links a:hover { color: var(--fg); }
.nav-links a.active { color: var(--fg); border-bottom-color: var(--accent); }
.nav-spacer { flex: 1; }
.nav-tail {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
/* Тема + CTA: в одной строке на десктопе, внутри бургер-панели на мобильных */
.nav-panel-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.nav-cta {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
}

/* Мобильное меню: переключатель темы (на десктопе скрыт, см. min-width 901) */
.nav-theme-sheet {
  display: none;
}
/* Мобильное меню: строка «Тема» + капсульный переключатель */
.nav-theme-sheet-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
}
.nav-theme-sheet-title {
  font-family: var(--sans);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--fg);
}
.nav-theme-pill {
  flex-shrink: 0;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  border-radius: 999px;
  -webkit-tap-highlight-color: transparent;
}
/* Сброс дефолтного синего outline у <button> после клика (:focus без :focus-visible) */
.nav-theme-pill:focus {
  outline: none;
}
.nav-theme-pill:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.nav-theme-pill-track {
  --pill-track-w: 72px;
  --pill-thumb: 26px;
  --pill-inset: 3px;
  position: relative;
  display: block;
  width: var(--pill-track-w);
  height: 32px;
  border-radius: 999px;
  box-sizing: border-box;
  background: color-mix(in oklch, var(--bg-2) 86%, var(--border));
  /* Без смеси с --accent: иначе при cyan/indigo акценте граница уходит в синий оттенок */
  border: 1px solid var(--border);
}
.nav-theme-pill-thumb {
  position: absolute;
  top: 50%;
  left: var(--pill-inset);
  width: var(--pill-thumb);
  height: var(--pill-thumb);
  margin-top: calc(-0.5 * var(--pill-thumb));
  border-radius: 50%;
  background: oklch(0.99 0.002 250);
  box-shadow:
    0 1px 4px color-mix(in oklch, var(--fg) 12%, transparent),
    0 0 0 1px color-mix(in oklch, var(--border) 35%, transparent);
  z-index: 1;
  transition: transform 0.28s cubic-bezier(0.32, 0.72, 0, 1);
}
#nav-theme-pill[data-theme="light"] .nav-theme-pill-thumb {
  transform: translateX(calc(var(--pill-track-w) - 2 * var(--pill-inset) - var(--pill-thumb)));
}
.nav-theme-pill-deco {
  position: absolute;
  top: 50%;
  margin-top: -8px;
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--fg-3);
  pointer-events: none;
  z-index: 0;
}
.nav-theme-pill-deco svg {
  display: block;
}
.nav-theme-pill-deco--sun {
  left: 8px;
}
.nav-theme-pill-deco--moon {
  right: 8px;
}
#nav-theme-pill[data-theme="dark"] .nav-theme-pill-deco--moon {
  color: var(--fg);
  opacity: 0.88;
}
#nav-theme-pill[data-theme="dark"] .nav-theme-pill-deco--sun {
  opacity: 0.2;
}
#nav-theme-pill[data-theme="light"] .nav-theme-pill-deco--sun {
  color: var(--fg);
  opacity: 0.88;
}
#nav-theme-pill[data-theme="light"] .nav-theme-pill-deco--moon {
  opacity: 0.2;
}
[data-theme="light"] .nav-theme-pill-track {
  background: color-mix(in oklch, var(--bg-2) 94%, var(--border));
  border-color: var(--border);
}

@media (prefers-reduced-motion: reduce) {
  .nav-theme-pill-thumb {
    transition: none;
  }
}

.nav-cta-block {
  display: contents;
}
.nav-cta-block-label {
  display: none;
}

/* Mobile menu: панель по умолчанию «в потоке» на десктопе */
.nav-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: transparent;
  color: var(--fg-2);
  cursor: pointer;
  flex-shrink: 0;
  transition: border-color 0.12s, color 0.12s, background 0.12s;
}
.nav-menu-btn:hover {
  border-color: var(--border-2);
  color: var(--fg);
  background: var(--bg-1);
}
.nav-menu-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.nav-menu-btn-bar {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 1px;
  background: currentColor;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
body.nav-open .nav-menu-btn-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
body.nav-open .nav-menu-btn-bar:nth-child(2) {
  opacity: 0;
}
body.nav-open .nav-menu-btn-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-backdrop {
  display: none;
  position: fixed;
  left: 0;
  right: 0;
  top: 56px;
  bottom: 0;
  /* Ниже .nav-inner: иначе затемнение перекрывает выезжающее меню */
  z-index: 0;
  background: color-mix(in oklch, var(--bg) 65%, transparent);
}
body.nav-open .nav-backdrop {
  display: block;
}

.nav-panel {
  display: contents;
}
/* На десктопе не создаёт лишний flex-слой — дети участвуют в .nav-inner как раньше */
.nav-panel-inner {
  display: contents;
}

@media (min-width: 901px) {
  .nav-inner .logo {
    order: 0;
  }
  .nav-inner .nav-links {
    order: 1;
  }
  .nav-inner .nav-spacer {
    order: 2;
  }
  .nav-inner .nav-panel-actions {
    order: 3;
  }
  .nav-inner .nav-tail {
    order: 4;
  }

  .nav-cta-primary::after {
    content: ' →';
    font-weight: 600;
  }
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: transparent;
  color: var(--fg-2);
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
}
.theme-toggle:hover {
  border-color: var(--border-2);
  color: var(--fg);
  background: var(--bg-1);
}
.theme-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.theme-toggle svg {
  display: block;
  width: 15px;
  height: 15px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background .12s, border-color .12s, color .12s, transform .05s;
  white-space: nowrap;
}
.btn:hover { border-color: var(--border-2); background: var(--bg-1); }
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
  font-weight: 600;
}
.btn-primary:hover { background: var(--accent); filter: brightness(1.05); border-color: var(--accent); }
.btn-ghost { border-color: transparent; }
.btn-ghost:hover { border-color: var(--border); }
.btn-sm { padding: 6px 10px; font-size: 12px; }
.btn-lg { padding: 12px 18px; font-size: 14px; }

/* ===== Section ===== */
section { padding: 96px 0; border-top: 1px solid var(--border); }
section:first-of-type { border-top: none; }

.sec-head {
  display: flex;
  align-items: baseline;
  gap: 24px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.sec-num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--fg-4);
  letter-spacing: 0.12em;
}
.sec-title {
  font-size: 34px;
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0;
  max-width: 600px;
}
.sec-sub {
  color: var(--fg-2);
  max-width: 520px;
  margin-left: auto;
  font-size: 15px;
}

h1, h2, h3, h4 { font-weight: 500; letter-spacing: -0.02em; }

/* ===== Cards / panels ===== */
.panel {
  border: 1px solid var(--border);
  background: var(--bg-1);
  border-radius: var(--radius-lg);
  position: relative;
}
.panel-ticks::before,
.panel-ticks::after {
  content: '';
  position: absolute;
  width: 6px;
  height: 6px;
  border: 1px solid var(--accent);
}
.panel-ticks::before { top: -3px; left: -3px; border-right: 0; border-bottom: 0; }
.panel-ticks::after { bottom: -3px; right: -3px; border-left: 0; border-top: 0; }

/* ===== Footer ===== */
footer {
  border-top: 1px solid var(--border);
  padding: 64px 0 32px;
  background: var(--bg);
}
.foot-grid {
  display: grid;
  grid-template-columns: 2fr repeat(4, 1fr);
  gap: 48px;
  margin-bottom: 48px;
}
.foot-col h4 {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin: 0 0 16px;
  font-weight: 500;
}
.foot-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.foot-col a { color: var(--fg-2); font-size: 14px; }
.foot-col a:hover { color: var(--fg); }
.foot-bot {
  display: flex;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 11px;
  color: var(--fg-4);
}

/* utility */
.hr { height: 1px; background: var(--border); margin: 64px 0; border: 0; }
.grid-dots {
  background-image: radial-gradient(var(--border) 1px, transparent 1px);
  background-size: 24px 24px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  font-family: var(--mono);
  font-size: 11px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--fg-2);
  background: var(--bg-1);
}
.badge-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.badge-accent { border-color: var(--accent); color: var(--accent); background: transparent; }

/* Tweaks panel */
.tweaks {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 100;
  width: 280px;
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 14px;
  font-family: var(--mono);
  font-size: 12px;
  box-shadow: 0 20px 40px -20px rgba(0,0,0,0.5);
  display: none;
}
.tweaks.open { display: block; }
.tweaks h5 { margin: 0 0 12px; font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--fg-3); }
.tweaks-row { display: flex; gap: 6px; margin-bottom: 10px; flex-wrap: wrap; align-items: center; }
.tweaks-row > label { width: 100%; color: var(--fg-3); font-size: 10px; margin-bottom: 4px; text-transform: uppercase; letter-spacing: 0.08em; }
.tweaks-row button {
  flex: 1;
  min-width: 56px;
  padding: 6px 8px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  color: var(--fg-2);
  font-family: var(--mono);
  font-size: 11px;
  cursor: pointer;
  border-radius: var(--radius);
}
.tweaks-row button.active { border-color: var(--accent); color: var(--accent); }
.tweaks-swatch {
  width: 22px; height: 22px; border-radius: 50%;
  border: 1px solid var(--border);
  cursor: pointer;
  flex: none;
}
.tweaks-swatch.active { outline: 2px solid var(--fg); outline-offset: 2px; }

/* Responsive */
@media (max-width: 900px) {
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .sec-title { font-size: 26px; }
  section { padding: 64px 0; }

  .nav-spacer {
    display: none;
  }
  .nav-tail {
    margin-left: auto;
  }
  .nav-menu-btn {
    display: flex;
  }

  .nav {
    background: color-mix(in oklch, var(--bg) 96%, transparent);
  }

  .nav-inner {
    position: relative;
    z-index: 2;
    gap: 12px;
  }

  body.nav-open {
    overflow-x: hidden;
  }

  .nav-backdrop {
    left: 0;
    right: auto;
    width: 100vw;
    width: 100dvw;
    max-width: 100dvw;
  }

  .nav-panel {
    --nav-panel-pad: 16px;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    position: fixed;
    top: 56px;
    left: 0;
    /* Ширина от вьюпорта (dvw), не от «расширенного» containing block при left+right */
    right: auto;
    width: 100vw;
    width: 100dvw;
    max-width: 100dvw;
    height: calc(100vh - 56px);
    height: calc(100dvh - 56px);
    max-height: calc(100svh - 56px);
    bottom: auto;
    z-index: 3;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    background: color-mix(in oklch, var(--bg) 94%, transparent);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-top: 1px solid var(--border);
    overflow-x: hidden;
    overflow-y: auto;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
    transform: translateX(100%);
    visibility: hidden;
    pointer-events: none;
    transition: transform 0.22s ease, visibility 0.22s;
  }
  body.nav-open .nav-panel {
    transform: translateX(0);
    visibility: visible;
    pointer-events: auto;
  }

  .nav-panel-inner {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    flex: 1 1 auto;
    min-width: 0;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    overflow-x: hidden;
    padding-top: 8px;
    padding-right: max(var(--nav-panel-pad), env(safe-area-inset-right, 0px));
    padding-bottom: max(12px, env(safe-area-inset-bottom, 0px));
    padding-left: max(var(--nav-panel-pad), env(safe-area-inset-left, 0px));
  }

  .nav-panel-inner > .nav-links,
  .nav-panel-inner > .nav-panel-actions {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    box-sizing: border-box;
  }

  .nav-panel .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
    max-width: 100%;
    margin: 0;
    padding: 8px 0 0;
    flex: 0 1 auto;
    min-height: 0;
    min-width: 0;
    box-sizing: border-box;
  }
  .nav-panel .nav-links a {
    padding: 12px 4px;
    border-bottom: 1px solid var(--border);
    font-size: 15px;
    border-left: 0;
  }
  .nav-panel .nav-links a.active {
    border-bottom-color: var(--border);
    border-left: 3px solid var(--accent);
    padding-left: 12px;
    background: var(--bg-1);
  }

  .nav-panel .nav-panel-actions {
    flex-direction: column;
    align-items: stretch;
    align-self: stretch;
    gap: 20px;
    width: 100%;
    max-width: 100%;
    min-width: 0;
    margin-top: auto;
    margin-left: 0;
    margin-right: 0;
    margin-bottom: 0;
    padding: 18px 0 0;
    border-top: 1px solid var(--border);
    box-sizing: border-box;
    flex-shrink: 0;
    overflow-x: hidden;
  }
  .nav-panel .nav-panel-actions > .theme-toggle {
    display: none !important;
  }

  .nav-panel .nav-theme-sheet {
    display: block;
    width: 100%;
    max-width: 100%;
    min-width: 0;
    box-sizing: border-box;
  }
  .nav-panel .nav-theme-sheet-row {
    min-width: 0;
  }
  .nav-panel .nav-theme-sheet-title {
    font-size: 15px;
  }
  .nav-panel .nav-theme-pill-track {
    --pill-track-w: 80px;
    --pill-thumb: 28px;
    height: 34px;
  }

  .nav-panel .nav-cta-block {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    width: 100%;
    max-width: 100%;
    min-width: 0;
    box-sizing: border-box;
  }
  .nav-panel .nav-cta-block-label {
    display: block;
    font-family: var(--mono);
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--fg-4);
  }
  .nav-panel .nav-cta {
    flex-direction: column;
    width: 100%;
    max-width: 100%;
    min-width: 0;
    align-items: stretch;
    justify-content: flex-start;
    flex-wrap: nowrap;
    gap: 10px;
  }
  .nav-panel .nav-cta .btn {
    display: flex;
    width: 100%;
    max-width: 100%;
    min-width: 0;
    align-self: stretch;
    justify-content: center;
    align-items: center;
    white-space: normal;
    text-align: center;
    line-height: 1.35;
    font-family: var(--sans);
    font-size: 15px;
    font-weight: 500;
    padding: 12px 16px;
    min-height: 48px;
    box-sizing: border-box;
  }
  .nav-panel .nav-cta .btn-primary {
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--accent-ink);
  }
  .nav-panel .nav-cta .btn-sm {
    font-size: 15px;
    padding: 12px 16px;
  }
}

@media (max-width: 600px) {
  .foot-grid {
    grid-template-columns: 1fr;
    gap: 36px;
    margin-bottom: 40px;
  }
  .foot-bot {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .sec-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 36px;
  }
  .sec-sub {
    margin-left: 0;
    max-width: none;
  }
}

@media (max-width: 480px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .nav-inner {
    gap: 10px;
  }
  .logo {
    font-size: 13px;
    gap: 8px;
  }
  .logo-icon {
    width: 22px;
    height: 22px;
  }
  .tweaks {
    left: 12px;
    right: 12px;
    width: auto;
    max-width: none;
  }
}