/* Deutsch · starboy — дизайн-система v2 («dark premium»).
 *
 * Один файл на весь сайт. Токены — в :root, компоненты — ниже по разделам.
 * Цвета артиклей едины для всего сайта: der — синий, die — розовый, das — зелёный.
 * Всё движение отключается при prefers-reduced-motion.
 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Instrument+Serif:ital@0;1&family=JetBrains+Mono:wght@400;600&display=swap');

:root {
  color-scheme: dark;

  --bg: #07070b;
  --bg-2: #0c0c13;
  --surface: rgba(255, 255, 255, 0.035);
  --surface-2: rgba(255, 255, 255, 0.06);
  --surface-3: rgba(255, 255, 255, 0.09);
  --solid: #12121b;
  --solid-2: #181824;
  --line: rgba(255, 255, 255, 0.08);
  --line-2: rgba(255, 255, 255, 0.14);

  --text: #eeeef4;
  --text-2: #b7b7c6;
  --muted: #7d7d8f;
  --faint: #55556a;

  --accent: #8f7dff;
  --accent-2: #5cc8ff;
  --accent-ink: #0a0714;
  --grad: linear-gradient(135deg, #a18bff 0%, #7c8cff 45%, #5cc8ff 100%);
  --grad-warm: linear-gradient(135deg, #ffb36b 0%, #ff7a9c 100%);
  --glow: 0 0 0 1px rgba(143, 125, 255, 0.35), 0 10px 40px -10px rgba(124, 140, 255, 0.55);

  --ok: #3ddc97;
  --ok-bg: rgba(61, 220, 151, 0.12);
  --warn: #ffb86b;
  --warn-bg: rgba(255, 184, 107, 0.12);
  --bad: #ff5c7a;
  --bad-bg: rgba(255, 92, 122, 0.12);

  --der: #6aa8ff;
  --die: #ff7eb3;
  --das: #5fe0a8;

  --font: 'Inter', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --serif: 'Instrument Serif', 'Iowan Old Style', Georgia, 'Times New Roman', serif;
  --mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;

  --r-sm: 10px;
  --r: 16px;
  --r-lg: 24px;
  --r-xl: 32px;

  --nav-w: 248px;
  --content-w: 1080px;
  --gutter: clamp(16px, 4vw, 40px);

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --t-fast: 140ms;
  --t: 260ms;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100dvh;
  background: var(--bg);
  color: var(--text);
  font: 400 15px/1.55 var(--font);
  font-feature-settings: 'cv11', 'ss01';
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Атмосфера: два размытых свечения и лёгкое зерно поверх. Всё — фиксированный
   фон, контент не перекрашивает. */
body::before {
  content: '';
  position: fixed;
  inset: -20vmax;
  z-index: -2;
  background:
    radial-gradient(40vmax 30vmax at 12% 0%, rgba(143, 125, 255, 0.16), transparent 60%),
    radial-gradient(36vmax 28vmax at 100% 18%, rgba(92, 200, 255, 0.10), transparent 60%),
    radial-gradient(30vmax 30vmax at 60% 110%, rgba(255, 122, 156, 0.07), transparent 60%);
  pointer-events: none;
}
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  opacity: 0.06;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E");
  pointer-events: none;
}

img, svg { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
::selection { background: rgba(143, 125, 255, 0.35); }
[hidden] { display: none !important; }

:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ─────────────────────────── каркас ─────────────────────────── */

.shell {
  display: grid;
  grid-template-columns: var(--nav-w) minmax(0, 1fr);
  min-height: 100dvh;
}

.nav {
  position: sticky;
  top: 0;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 22px 14px 16px;
  border-right: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(12, 12, 19, 0.85), rgba(7, 7, 11, 0.6));
  backdrop-filter: blur(18px);
  overflow-y: auto;
  scrollbar-width: none;
}
.nav::-webkit-scrollbar { display: none; }

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 10px 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: var(--grad);
  box-shadow: var(--glow);
  display: grid;
  place-items: center;
  color: var(--accent-ink);
  font: 400 20px/1 var(--serif);
}
.brand small {
  display: block;
  color: var(--muted);
  font: 500 11px/1.2 var(--mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav-group {
  margin: 14px 10px 6px;
  color: var(--faint);
  font: 600 10.5px/1 var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.nav-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 9px 10px;
  border-radius: var(--r-sm);
  color: var(--text-2);
  font-weight: 500;
  transition: background var(--t-fast), color var(--t-fast);
}
.nav-link svg { width: 18px; height: 18px; flex: none; opacity: 0.8; }
.nav-link:hover { background: var(--surface-2); color: var(--text); }
.nav-link[aria-current='page'] {
  background: var(--surface-3);
  color: var(--text);
}
.nav-link[aria-current='page']::before {
  content: '';
  position: absolute;
  left: -14px;
  top: 8px;
  bottom: 8px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: var(--grad);
}
.nav-link[aria-current='page'] svg { opacity: 1; color: var(--accent); }
.nav-link .badge { margin-left: auto; }
.nav-link .soon {
  margin-left: auto;
  color: var(--faint);
  font: 500 10px/1 var(--mono);
  text-transform: uppercase;
}

.nav-foot {
  margin-top: auto;
  padding-top: 14px;
  display: grid;
  gap: 8px;
}

.main {
  min-width: 0;
  padding: clamp(20px, 4vw, 44px) var(--gutter) 96px;
}
.page {
  width: 100%;
  max-width: var(--content-w);
  margin: 0 auto;
}

.topbar {
  display: none;
}

/* Мобильный: боковое меню уходит, снизу — панель вкладок, сверху — компактная шапка. */
@media (max-width: 900px) {
  .shell { grid-template-columns: minmax(0, 1fr); }
  .nav { display: none; }
  .topbar {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px var(--gutter);
    background: rgba(7, 7, 11, 0.78);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
  }
  .topbar .brand { padding: 0; }
  .main { padding-top: 22px; padding-bottom: calc(96px + env(safe-area-inset-bottom)); }
}

.tabbar {
  display: none;
}
@media (max-width: 900px) {
  .tabbar {
    position: fixed;
    left: 10px;
    right: 10px;
    bottom: calc(10px + env(safe-area-inset-bottom));
    z-index: 30;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    padding: 6px;
    border: 1px solid var(--line-2);
    border-radius: 20px;
    background: rgba(18, 18, 27, 0.86);
    backdrop-filter: blur(20px);
    box-shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.8);
  }
  .tabbar a, .tabbar button {
    display: grid;
    justify-items: center;
    gap: 3px;
    padding: 7px 2px 5px;
    border: 0;
    border-radius: 14px;
    background: none;
    color: var(--muted);
    font: 500 10.5px/1 var(--font);
    cursor: pointer;
  }
  .tabbar svg { width: 20px; height: 20px; }
  .tabbar [aria-current='page'] { color: var(--text); background: var(--surface-3); }
  .tabbar [aria-current='page'] svg { color: var(--accent); }
}

/* Лист «Ещё» на мобильном: все разделы. */
.sheet-backdrop {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(4px);
  animation: fade var(--t) var(--ease);
}
.sheet {
  position: fixed;
  z-index: 51;
  left: 50%;
  bottom: 0;
  width: min(640px, 100%);
  max-height: 88dvh;
  overflow-y: auto;
  transform: translateX(-50%);
  padding: 10px 18px calc(24px + env(safe-area-inset-bottom));
  border: 1px solid var(--line-2);
  border-bottom: 0;
  border-radius: var(--r-xl) var(--r-xl) 0 0;
  background: var(--solid);
  box-shadow: 0 -30px 80px -30px rgba(0, 0, 0, 0.9);
  animation: sheet-up var(--t) var(--ease);
}
.sheet-grip {
  width: 40px;
  height: 4px;
  margin: 4px auto 14px;
  border-radius: 4px;
  background: var(--line-2);
}
@media (min-width: 901px) {
  .sheet {
    top: 50%;
    bottom: auto;
    border-bottom: 1px solid var(--line-2);
    border-radius: var(--r-xl);
    transform: translate(-50%, -50%);
    padding-bottom: 24px;
    animation: pop var(--t) var(--ease);
  }
  .sheet-grip { display: none; }
}

/* ─────────────────────────── типографика ─────────────────────────── */

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font: 600 11px/1 var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--grad);
  box-shadow: 0 0 12px rgba(143, 125, 255, 0.8);
}

h1, h2, h3 { margin: 0; letter-spacing: -0.02em; line-height: 1.1; }

.display {
  font: 400 clamp(40px, 6.4vw, 76px)/0.98 var(--serif);
  letter-spacing: -0.02em;
}
.display em, .h1 em, .h2 em {
  font-style: italic;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  padding-right: 0.06em;
}
.h1 { font: 700 clamp(28px, 3.6vw, 40px)/1.08 var(--font); letter-spacing: -0.03em; }
.h2 { font: 650 clamp(20px, 2.4vw, 26px)/1.15 var(--font); letter-spacing: -0.02em; }
.h3 { font: 600 17px/1.25 var(--font); letter-spacing: -0.01em; }
.lead { color: var(--text-2); font-size: clamp(15px, 1.5vw, 17px); max-width: 62ch; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.mono { font-family: var(--mono); }
.serif { font-family: var(--serif); }
.de { font-family: var(--serif); font-size: 1.12em; letter-spacing: 0; }

.prose { color: var(--text-2); max-width: 72ch; }
.prose p { margin: 0 0 0.8em; }
.prose strong { color: var(--text); font-weight: 600; }
.prose code {
  padding: 0.08em 0.4em;
  border-radius: 6px;
  background: rgba(143, 125, 255, 0.12);
  color: #d7d0ff;
  font: 500 0.92em var(--mono);
}
.prose ul { margin: 0 0 0.8em; padding-left: 1.15em; }
.prose li { margin: 0.2em 0; }
.prose li::marker { color: var(--accent); }

/* ─────────────────────────── раскладки ─────────────────────────── */

.stack { display: grid; gap: var(--gap, 16px); }
.row { display: flex; align-items: center; gap: var(--gap, 12px); flex-wrap: wrap; }
.spread { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.grid {
  display: grid;
  gap: var(--gap, 16px);
  grid-template-columns: repeat(auto-fill, minmax(var(--min, 240px), 1fr));
}
.section { margin-top: clamp(28px, 5vw, 56px); }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 16px; margin-bottom: 16px; flex-wrap: wrap; }

/* ─────────────────────────── поверхности ─────────────────────────── */

.card {
  position: relative;
  padding: clamp(16px, 2.4vw, 24px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.02));
  backdrop-filter: blur(10px);
}
.card.pad-lg { padding: clamp(20px, 3.4vw, 36px); }
.card.solid { background: var(--solid); backdrop-filter: none; }

a.card, button.card, .card.link {
  display: block;
  width: 100%;
  text-align: left;
  cursor: pointer;
  transition: transform var(--t) var(--ease), border-color var(--t-fast), background var(--t-fast);
}
a.card:hover, button.card:hover, .card.link:hover {
  transform: translateY(-2px);
  border-color: var(--line-2);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.025));
}

/* Карточка с «подсветкой» по краю — для главного действия. */
.card.glow {
  border-color: transparent;
  background:
    linear-gradient(var(--solid), var(--solid)) padding-box,
    linear-gradient(135deg, rgba(161, 139, 255, 0.7), rgba(92, 200, 255, 0.35) 40%, rgba(255, 255, 255, 0.06)) border-box;
  box-shadow: 0 30px 80px -40px rgba(124, 140, 255, 0.6);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 5vw, 56px);
  border-radius: var(--r-xl);
}
.hero::after {
  content: '';
  position: absolute;
  right: -10%;
  top: -40%;
  width: 60%;
  aspect-ratio: 1;
  max-width: 100%;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(143, 125, 255, 0.28), transparent);
  pointer-events: none;
}

.icon-tile {
  width: 42px;
  height: 42px;
  border-radius: 13px;
  display: grid;
  place-items: center;
  background: var(--surface-3);
  border: 1px solid var(--line);
  color: var(--accent);
}
.icon-tile svg { width: 21px; height: 21px; }
.icon-tile.warm { color: var(--warn); }
.icon-tile.cool { color: var(--accent-2); }
.icon-tile.green { color: var(--ok); }
.icon-tile.pink { color: var(--die); }

/* ─────────────────────────── контролы ─────────────────────────── */

.btn {
  --h: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: var(--h);
  padding: 0 18px;
  border: 1px solid var(--line-2);
  border-radius: 12px;
  background: var(--surface-2);
  color: var(--text);
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  transition: transform var(--t-fast) var(--ease), background var(--t-fast), border-color var(--t-fast), box-shadow var(--t-fast), opacity var(--t-fast);
}
.btn svg { width: 17px; height: 17px; }
.btn:hover { background: var(--surface-3); border-color: rgba(255, 255, 255, 0.2); }
.btn:active { transform: translateY(1px) scale(0.99); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }
.btn.primary {
  border-color: transparent;
  background: var(--grad);
  color: var(--accent-ink);
  box-shadow: var(--glow);
}
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; border-color: transparent; color: var(--text-2); }
.btn.ghost:hover { background: var(--surface-2); color: var(--text); }
.btn.lg { --h: 52px; padding: 0 24px; border-radius: 14px; font-size: 16px; }
.btn.sm { --h: 34px; padding: 0 12px; border-radius: 10px; font-size: 13px; }
.btn.icon { width: var(--h); padding: 0; }
.btn.block { width: 100%; }
.btn.ok { background: var(--ok-bg); border-color: rgba(61, 220, 151, 0.35); color: var(--ok); }
.btn.bad { background: var(--bad-bg); border-color: rgba(255, 92, 122, 0.35); color: var(--bad); }
.btn.warn { background: var(--warn-bg); border-color: rgba(255, 184, 107, 0.35); color: var(--warn); }

.kbd {
  display: inline-grid;
  place-items: center;
  min-width: 20px;
  height: 20px;
  padding: 0 5px;
  border: 1px solid var(--line-2);
  border-bottom-width: 2px;
  border-radius: 6px;
  color: var(--muted);
  font: 500 11px/1 var(--mono);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 30px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text-2);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--t-fast), border-color var(--t-fast), color var(--t-fast);
}
.chip:hover { border-color: var(--line-2); color: var(--text); }
.chip[aria-pressed='true'] {
  border-color: rgba(143, 125, 255, 0.55);
  background: rgba(143, 125, 255, 0.14);
  color: var(--text);
}
.chip .count { color: var(--muted); font: 500 11px/1 var(--mono); }

.badge {
  display: inline-flex;
  align-items: center;
  height: 22px;
  padding: 0 8px;
  border-radius: 999px;
  background: var(--surface-3);
  color: var(--text-2);
  font: 600 11px/1 var(--mono);
  letter-spacing: 0.02em;
}
.badge.accent { background: rgba(143, 125, 255, 0.18); color: #cfc6ff; }
.badge.ok { background: var(--ok-bg); color: var(--ok); }
.badge.warn { background: var(--warn-bg); color: var(--warn); }
.badge.bad { background: var(--bad-bg); color: var(--bad); }
.badge.level { background: transparent; border: 1px solid var(--line-2); color: var(--muted); }

.segmented {
  display: inline-flex;
  padding: 4px;
  gap: 2px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
}
.segmented button {
  height: 32px;
  padding: 0 12px;
  border: 0;
  border-radius: 9px;
  background: none;
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}
.segmented button[aria-pressed='true'] { background: var(--surface-3); color: var(--text); }

.input {
  width: 100%;
  height: 48px;
  padding: 0 16px;
  border: 1px solid var(--line-2);
  border-radius: 14px;
  background: rgba(0, 0, 0, 0.25);
  color: var(--text);
  font-size: 16px;
  transition: border-color var(--t-fast), box-shadow var(--t-fast), background var(--t-fast);
}
.input::placeholder { color: var(--faint); }
.input:focus { outline: none; border-color: rgba(143, 125, 255, 0.7); box-shadow: 0 0 0 4px rgba(143, 125, 255, 0.15); }
.input.de { font-family: var(--serif); font-size: 21px; }
.input.ok { border-color: rgba(61, 220, 151, 0.6); background: var(--ok-bg); }
.input.bad { border-color: rgba(255, 92, 122, 0.6); background: var(--bad-bg); }
.input.warn { border-color: rgba(255, 184, 107, 0.6); background: var(--warn-bg); }

.search {
  position: relative;
}
.search svg {
  position: absolute;
  left: 14px;
  top: 50%;
  width: 18px;
  height: 18px;
  transform: translateY(-50%);
  color: var(--muted);
  pointer-events: none;
}
.search .input { padding-left: 42px; height: 44px; font-size: 15px; }

.toggle {
  position: relative;
  width: 40px;
  height: 24px;
  border: 0;
  border-radius: 999px;
  background: var(--surface-3);
  cursor: pointer;
  transition: background var(--t-fast);
}
.toggle::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--text-2);
  transition: transform var(--t) var(--ease), background var(--t-fast);
}
.toggle[aria-checked='true'] { background: var(--accent); }
.toggle[aria-checked='true']::after { transform: translateX(16px); background: #fff; }

/* ─────────────────────────── данные ─────────────────────────── */

.stat { display: grid; gap: 4px; }
.stat b {
  font: 700 clamp(24px, 3vw, 34px)/1 var(--font);
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}
.stat span { color: var(--muted); font-size: 13px; }

.bar {
  position: relative;
  height: 6px;
  border-radius: 999px;
  background: var(--surface-3);
  overflow: hidden;
}
.bar > i {
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--p, 0%);
  border-radius: inherit;
  background: var(--grad);
  transition: width 600ms var(--ease);
}
.bar.thin { height: 4px; }

.ring {
  --size: 64px;
  --stroke: 6;
  position: relative;
  width: var(--size);
  height: var(--size);
  flex: none;
}
.ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.ring circle { fill: none; stroke-width: var(--stroke); stroke-linecap: round; }
.ring .track { stroke: var(--surface-3); }
.ring .value { stroke: url(#ring-grad); transition: stroke-dashoffset 800ms var(--ease); }
.ring b {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font: 700 calc(var(--size) * 0.24)/1 var(--font);
  font-variant-numeric: tabular-nums;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--r);
}
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.table th, .table td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  white-space: nowrap;
}
.table th {
  position: sticky;
  top: 0;
  background: var(--solid);
  color: var(--muted);
  font: 600 11px/1 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.table tbody tr { cursor: pointer; transition: background var(--t-fast); }
.table tbody tr:hover { background: var(--surface-2); }
.table tr:last-child td { border-bottom: 0; }
.table td.de { font-size: 17px; }
.table.plain tbody tr { cursor: default; }
.table.plain tbody tr:hover { background: none; }

.art-der { color: var(--der); }
.art-die { color: var(--die); }
.art-das { color: var(--das); }

/* ─────────────────────────── тренажёры ─────────────────────────── */

.trainer {
  max-width: 720px;
  margin: 0 auto;
}
.trainer-top {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 22px;
}
.trainer-top .bar { flex: 1; }

.prompt-card {
  padding: clamp(24px, 5vw, 44px);
  text-align: center;
}
.prompt-word {
  margin: 10px 0 6px;
  font: 400 clamp(44px, 8vw, 72px)/1 var(--serif);
  letter-spacing: -0.01em;
}
.prompt-tr { color: var(--text-2); font-size: 17px; }

.form-grid {
  display: grid;
  gap: 12px;
  margin-top: 28px;
  text-align: left;
}
.form-row { display: grid; gap: 6px; }
.form-row label {
  color: var(--muted);
  font: 600 11px/1 var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.form-row .fix {
  min-height: 1.3em;
  font-size: 14px;
}
.fix .right { color: var(--ok); font-family: var(--serif); font-size: 18px; }
.fix .note { color: var(--warn); }

.feedback {
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: var(--r);
  border: 1px solid var(--line);
  background: var(--surface-2);
  text-align: left;
  animation: rise var(--t) var(--ease);
}
.feedback.ok { border-color: rgba(61, 220, 151, 0.35); background: var(--ok-bg); }
.feedback.bad { border-color: rgba(255, 92, 122, 0.35); background: var(--bad-bg); }

.ratings {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-top: 18px;
}
.ratings .btn { --h: 58px; flex-direction: column; gap: 2px; font-size: 14px; }
.ratings .btn small { color: inherit; opacity: 0.7; font: 500 11px/1 var(--mono); }
@media (max-width: 520px) { .ratings { grid-template-columns: repeat(2, 1fr); } }

.options {
  display: grid;
  gap: 10px;
  margin-top: 24px;
}
.option {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  min-height: 56px;
  padding: 12px 16px;
  border: 1px solid var(--line-2);
  border-radius: var(--r);
  background: var(--surface);
  text-align: left;
  font: 400 21px/1.2 var(--serif);
  cursor: pointer;
  transition: border-color var(--t-fast), background var(--t-fast), transform var(--t-fast);
}
.option:hover { border-color: rgba(143, 125, 255, 0.5); background: var(--surface-2); }
.option .kbd { font-family: var(--mono); }
.option.ok { border-color: rgba(61, 220, 151, 0.6); background: var(--ok-bg); }
.option.bad { border-color: rgba(255, 92, 122, 0.6); background: var(--bad-bg); }
.option:disabled { cursor: default; }

/* Карточка-переворот. */
.flip {
  perspective: 1400px;
  cursor: pointer;
}
.flip-inner {
  position: relative;
  min-height: 300px;
  transition: transform 600ms var(--ease);
  transform-style: preserve-3d;
}
.flip.is-flipped .flip-inner { transform: rotateY(180deg); }
.flip-face {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  gap: 8px;
  padding: 28px;
  text-align: center;
  backface-visibility: hidden;
  border-radius: var(--r-xl);
}
.flip-back { transform: rotateY(180deg); }
/* backdrop-filter внутри 3D-переворота в Chromium ломает backface-visibility:
   обратная сторона просвечивает зеркально. На гранях — сплошной фон. */
.flip-face.card {
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  background:
    linear-gradient(var(--solid), var(--solid)) padding-box,
    linear-gradient(135deg, rgba(161, 139, 255, 0.7), rgba(92, 200, 255, 0.35) 40%, rgba(255, 255, 255, 0.06)) border-box;
  -webkit-backface-visibility: hidden;
}

/* Три формы глагола в одну линию. */
.forms {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.4em;
  flex-wrap: wrap;
  font: 400 clamp(26px, 4.4vw, 40px)/1.15 var(--serif);
}
.forms .sep { color: var(--faint); font-family: var(--font); font-size: 0.6em; }
.forms .aux { color: var(--accent-2); }

/* Подсветка изменившейся гласной. */
mark.ablaut {
  padding: 0 0.04em;
  border-radius: 4px;
  background: none;
  color: var(--warn);
}

/* ─────────────────────────── уведомления ─────────────────────────── */

.toast-host {
  position: fixed;
  z-index: 80;
  left: 50%;
  bottom: 24px;
  display: grid;
  gap: 8px;
  transform: translateX(-50%);
  pointer-events: none;
}
@media (max-width: 900px) { .toast-host { bottom: calc(96px + env(safe-area-inset-bottom)); } }
.toast {
  padding: 11px 16px;
  border: 1px solid var(--line-2);
  border-radius: 14px;
  background: rgba(24, 24, 36, 0.95);
  box-shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.8);
  font-size: 14px;
  animation: rise var(--t) var(--ease);
}

.empty {
  padding: 48px 20px;
  text-align: center;
  color: var(--muted);
}

.sync-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  color: var(--text-2);
  font-size: 12.5px;
  cursor: pointer;
  text-align: left;
  width: 100%;
}
.sync-pill i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--faint);
  flex: none;
}
.sync-pill.on i { background: var(--ok); box-shadow: 0 0 10px rgba(61, 220, 151, 0.8); }
.sync-pill.err i { background: var(--warn); }
.sync-pill.busy i { background: var(--accent-2); animation: pulse 1s infinite; }

.nav-tools {
  display: flex;
  gap: 6px;
}
.nav-tools .btn { flex: 1; }

/* ─────────────────────────── движение ─────────────────────────── */

@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@keyframes pop { from { opacity: 0; transform: translate(-50%, -48%) scale(0.98); } to { opacity: 1; transform: translate(-50%, -50%); } }
@keyframes sheet-up { from { transform: translate(-50%, 30px); opacity: 0; } to { transform: translate(-50%, 0); opacity: 1; } }
@keyframes pulse { 50% { opacity: 0.35; } }
@keyframes shake {
  10%, 90% { transform: translateX(-1px); }
  20%, 80% { transform: translateX(2px); }
  30%, 50%, 70% { transform: translateX(-4px); }
  40%, 60% { transform: translateX(4px); }
}

.reveal { animation: rise 520ms var(--ease) both; }
.reveal-2 { animation: rise 520ms 70ms var(--ease) both; }
.reveal-3 { animation: rise 520ms 140ms var(--ease) both; }
.reveal-4 { animation: rise 520ms 210ms var(--ease) both; }
.shake { animation: shake 420ms var(--ease); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 1ms !important;
    animation-delay: 0ms !important;
    transition-duration: 1ms !important;
  }
}

/* ─────────────────────────── страницы ─────────────────────────── */

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: clamp(20px, 4vw, 48px);
  align-items: center;
}
.hero-side { display: grid; justify-items: center; }
@media (max-width: 720px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr); }
  .hero-side { display: none; }
}
.hero-stats {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 14px clamp(20px, 4vw, 44px);
  padding-top: 20px;
  border-top: 1px solid var(--line);
}
.hero-stats .stat b { display: inline-flex; align-items: center; gap: 6px; }
.streak-icon { width: 0.8em; height: 0.8em; color: var(--warn); }
.hero > * { position: relative; z-index: 1; }

.group-card { display: grid; align-content: start; }
.group-pattern {
  margin: 18px 0 6px;
  font: 400 clamp(26px, 3vw, 32px)/1.05 var(--serif);
  letter-spacing: 0;
  background: linear-gradient(180deg, #fff, #c9c3ff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.group-examples { font-family: var(--serif); font-size: 15px; }

.dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--faint);
  vertical-align: middle;
}
.dot.learning { background: var(--warn); }
.dot.due { background: var(--accent-2); box-shadow: 0 0 8px rgba(92, 200, 255, 0.7); }
.dot.learned { background: var(--ok); }

.verbs-table td:first-child, .verbs-table th:first-child { width: 28px; padding-right: 0; }
.verbs-table .aux { color: var(--accent-2); }

.umlauts .btn { font-family: var(--serif); font-size: 17px; min-width: 40px; }

.home-cta {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 18px;
  align-items: center;
}
@media (max-width: 600px) {
  .home-cta { grid-template-columns: minmax(0, 1fr); }
}
.module-card { display: grid; gap: 14px; align-content: start; min-height: 172px; }
.module-card .foot { margin-top: auto; display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.module-card.soon { opacity: 0.55; cursor: default; }
.module-card.soon:hover { transform: none; }

.word-of-day .forms { justify-content: flex-start; }

/* Грамматика: урок. */
.lesson { max-width: 860px; margin: 0 auto; }
.lesson-section {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 8px 18px;
}
.lesson-num {
  padding-top: 6px;
  color: var(--faint);
  font-size: 13px;
  letter-spacing: 0.08em;
}
@media (max-width: 600px) {
  .lesson-section { grid-template-columns: minmax(0, 1fr); }
  .lesson-num { padding-top: 0; }
}
.lesson-section .prose { max-width: none; }
.grammar-table td.de { font-size: 16px; }
.grammar-table td { white-space: normal; min-width: 64px; }

.example {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  padding: 10px 12px;
  border-radius: var(--r);
  background: rgba(0, 0, 0, 0.18);
  border: 1px solid var(--line);
}
.example .de { font-size: 18px; line-height: 1.35; }

.tip {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--r);
  border: 1px solid rgba(255, 184, 107, 0.28);
  background: linear-gradient(135deg, rgba(255, 184, 107, 0.10), rgba(255, 122, 156, 0.05));
}
.tip > svg { width: 20px; height: 20px; color: var(--warn); margin-top: 2px; }
.tip .prose p:last-child, .tip .prose ul:last-child { margin-bottom: 0; }

/* Грамматика: упражнение. */
.exercise { padding: clamp(20px, 4vw, 36px); }
.ex-q {
  font-size: clamp(22px, 3.2vw, 28px);
  line-height: 1.6;
  color: var(--text);
}
.gap-input {
  display: inline-block;
  height: 1.6em;
  margin: 0 4px;
  padding: 0 10px;
  border: 0;
  border-bottom: 2px solid rgba(143, 125, 255, 0.6);
  border-radius: 8px 8px 0 0;
  background: rgba(143, 125, 255, 0.10);
  color: var(--text);
  font: inherit;
  text-align: center;
  vertical-align: baseline;
  transition: background var(--t-fast), border-color var(--t-fast);
}
.gap-input:focus { outline: none; background: rgba(143, 125, 255, 0.2); border-bottom-color: var(--accent-2); }
.gap-input.ok { background: var(--ok-bg); border-bottom-color: var(--ok); color: var(--ok); }
.gap-input.bad { background: var(--bad-bg); border-bottom-color: var(--bad); color: var(--bad); text-decoration: line-through; }
.gap-input.warn { background: var(--warn-bg); border-bottom-color: var(--warn); }
.gap-blank { color: var(--accent); letter-spacing: -0.1em; }
.ex-text { height: auto; min-height: 96px; padding: 14px 16px; resize: vertical; line-height: 1.4; }
.inline-icon { display: inline-block; width: 14px; height: 14px; vertical-align: -2px; color: var(--warn); }
.mb-1 { margin-bottom: 8px; }

/* Предлоги: падежи всегда одного цвета. */
.badge.case-Akk { background: rgba(106, 168, 255, 0.16); color: #9cc6ff; }
.badge.case-Dat { background: rgba(255, 184, 107, 0.16); color: #ffcf9a; }
.badge.case-Gen { background: rgba(95, 224, 168, 0.16); color: #8ff0c5; }
.prep-tile { display: grid; gap: 8px; text-align: left; }
.prep-word { font: 400 34px/1 var(--serif); }
.case-pick button:disabled { cursor: default; }
.rektion-table td.de { font-size: 17px; }

/* Письмо. */
.write-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 18px;
  align-items: start;
}
@media (max-width: 980px) { .write-layout { grid-template-columns: minmax(0, 1fr); } }
.task-sticky { position: sticky; top: 24px; }
@media (max-width: 980px) { .task-sticky { position: static; } }
.situation { font: 400 19px/1.5 var(--serif); color: var(--text); }
.points { margin: 0; padding: 0; list-style: none; display: grid; gap: 8px; }
.points li {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  color: var(--text-2);
}
.points li svg { width: 18px; height: 18px; margin-top: 3px; color: var(--faint); }
.points li.ok svg { color: var(--ok); }
.points li.miss svg { color: var(--bad); }
.editor {
  width: 100%;
  min-height: 360px;
  padding: 18px 20px;
  border: 1px solid var(--line-2);
  border-radius: var(--r-lg);
  background: rgba(0, 0, 0, 0.28);
  color: var(--text);
  font: 400 19px/1.65 var(--serif);
  resize: vertical;
}
.editor:focus { outline: none; border-color: rgba(143, 125, 255, 0.6); box-shadow: 0 0 0 4px rgba(143, 125, 255, 0.12); }
.wc { font: 600 13px/1 var(--mono); color: var(--muted); }
.wc.good { color: var(--ok); }
.wc.over { color: var(--warn); }
.checking {
  display: grid;
  place-items: center;
  gap: 14px;
  padding: 40px 20px;
  text-align: center;
}
.spinner {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 3px solid var(--surface-3);
  border-top-color: var(--accent);
  animation: spin 900ms linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.marked-text { font: 400 18px/1.8 var(--serif); color: var(--text); white-space: pre-wrap; }
.marked-text mark {
  padding: 1px 2px;
  border-radius: 4px;
  background: var(--bad-bg);
  color: inherit;
  border-bottom: 2px solid var(--bad);
  cursor: pointer;
}
.marked-text mark.t-vocabulary, .marked-text mark.t-style, .marked-text mark.t-register { background: var(--warn-bg); border-bottom-color: var(--warn); }
.marked-text mark.t-spelling, .marked-text mark.t-punctuation { background: rgba(92, 200, 255, 0.12); border-bottom-color: var(--accent-2); }
.marked-text mark.active { outline: 2px solid var(--accent-2); }
.corr {
  display: grid;
  gap: 4px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--surface);
}
.corr.active { border-color: rgba(92, 200, 255, 0.55); }
.corr .wrong { color: var(--bad); text-decoration: line-through; text-decoration-thickness: 1px; }
.corr .right { color: var(--ok); }
.criterion { display: grid; gap: 6px; }
.criterion .pips { display: flex; gap: 4px; }
.criterion .pips i { width: 100%; height: 6px; border-radius: 3px; background: var(--surface-3); }
.criterion .pips i.on { background: var(--grad); }

/* План на сегодня. */
.today-plan { margin-top: 18px; }
.plan-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(190px, 100%), 1fr));
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.plan-steps a {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-rows: auto auto;
  gap: 10px 12px;
  height: 100%;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--surface);
  transition: border-color var(--t-fast), background var(--t-fast), transform var(--t) var(--ease);
}
.plan-steps a:hover { border-color: var(--line-2); background: var(--surface-2); transform: translateY(-1px); }
.plan-check {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 11px;
  background: var(--surface-3);
  color: var(--accent);
}
.plan-check svg { width: 18px; height: 18px; }
.plan-text { display: grid; gap: 2px; min-width: 0; }
.plan-title { font-weight: 600; font-size: 14px; line-height: 1.3; }
.plan-meta { position: absolute; top: 12px; right: 14px; }
.plan-bar { grid-column: 1 / -1; }
.plan-steps li.done a { border-color: rgba(61, 220, 151, 0.3); background: linear-gradient(180deg, rgba(61, 220, 151, 0.08), transparent); }
.plan-steps li.done .plan-check { background: var(--ok-bg); color: var(--ok); }
.plan-steps li.done .plan-title { color: var(--text-2); }

.level-pick {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 14px 16px;
}
.level-pick > svg { width: 18px; height: 18px; color: var(--muted); }
.level-pick.is-current { border-color: rgba(143, 125, 255, 0.55); }
.level-pick.is-current > svg { color: var(--ok); }

/* Утилиты. */
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 40px; }
.center { text-align: center; }
.w-full { width: 100%; }
.nowrap { white-space: nowrap; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}