/* ==========================================================================
   Монохромная палитра: чёрный, оттенки серого, белый. Цветных акцентов нет.
   Оформление продолжает bio-site: те же переменные, та же типографика.
   ========================================================================== */

:root {
  --bg: #0c0c0e;
  --bg-elevated: #121216;
  --surface: #16161b;
  --surface-hover: #1e1e24;
  --border: #26262e;
  --border-strong: #3a3a45;
  --text: #f5f5f7;
  --text-muted: #a1a1ac;
  /* Самый тусклый оттенок текста. Светлее, чем в bio-site: на мелких подписях
     (11–13px) нужен контраст не ниже 4.5:1 к любому из фонов, включая --surface-hover. */
  --text-dim: #858590;
  --accent: #f5f5f7;
  --accent-contrast: #0c0c0e;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 40px 120px rgba(0, 0, 0, 0.65);
  --spotlight: rgba(255, 255, 255, 0.06);
  --grain-opacity: 0.035;
  --scrim: rgba(6, 6, 8, 0.72);

  --max: 1120px;
  --pad: clamp(20px, 5vw, 64px);
  --radius: 18px;
  --radius-sm: 12px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

:root[data-theme="light"] {
  --bg: #fafafa;
  --bg-elevated: #ffffff;
  --surface: #ffffff;
  --surface-hover: #f1f1f3;
  --border: #e4e4e9;
  --border-strong: #c6c6d0;
  --text: #0e0e11;
  --text-muted: #5c5c67;
  --text-dim: #6d6d78;
  --accent: #0e0e11;
  --accent-contrast: #fafafa;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.09);
  --shadow-lg: 0 40px 120px rgba(0, 0, 0, 0.16);
  --spotlight: rgba(0, 0, 0, 0.04);
  --grain-opacity: 0.02;
  --scrim: rgba(240, 240, 243, 0.76);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}

/* Прокрутка страницы под открытой панелью запрещена. */
html.is-locked,
html.is-locked body {
  overflow: hidden;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background 0.4s var(--ease), color 0.4s var(--ease);
}

h1,
h2,
h3,
p,
dl,
dd,
dt,
ul,
ol,
figure,
pre {
  margin: 0;
  padding: 0;
}

ul,
ol {
  list-style: none;
}

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

input {
  font: inherit;
  color: inherit;
}

.icon {
  width: 20px;
  height: 20px;
  display: block;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon--sm {
  width: 15px;
  height: 15px;
  stroke-width: 1.8;
}

:focus-visible {
  outline: 2px solid var(--border-strong);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 12px 18px;
  background: var(--accent);
  color: var(--accent-contrast);
  font-size: 14px;
  border-radius: 0 0 var(--radius-sm) 0;
}

.skip-link:focus {
  left: 0;
}

/* ---------- Плёнка зерна и индикатор прокрутки ---------- */

.grain {
  position: fixed;
  inset: -50%;
  z-index: 1;
  pointer-events: none;
  opacity: var(--grain-opacity);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)'/%3E%3C/svg%3E");
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 60;
  height: 2px;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: var(--accent);
  will-change: transform;
}

/* ---------- Верхняя панель ---------- */

.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 18px var(--pad);
  transition: padding 0.3s var(--ease), background 0.3s var(--ease),
    border-color 0.3s var(--ease), backdrop-filter 0.3s var(--ease);
  border-bottom: 1px solid transparent;
}

.topbar--stuck {
  padding-top: 12px;
  padding-bottom: 12px;
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--border);
}

.topbar__mark {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.topbar__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

.topbar__name {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 14px;
}

.topbar__nav {
  margin-left: auto;
  display: flex;
  gap: 4px;
}

.topbar__nav a {
  position: relative;
  padding: 7px 13px;
  border-radius: 999px;
  background: transparent;
  font-size: 14px;
  color: var(--text-muted);
  transition: color 0.16s;
}

.topbar__nav a:hover,
.topbar__nav a.is-active {
  color: var(--text);
  background: var(--surface-hover);
}

/* При смене раздела активный фон назначается синхронно, без промежуточного
   светлого кадра от transition между старой и новой кнопкой. */
:root.is-routing .topbar__nav a,
:root.is-routing .tabbar__item {
  transition: none;
}

.topbar__tools {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ---------- Кнопка музыки ---------- */

.music-toggle {
  position: relative;
  flex: 0 0 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 11px;
  color: var(--text-muted);
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.music-toggle:hover {
  color: var(--text);
  border-color: var(--border-strong);
  background: var(--surface);
}

/* Эквалайзер из четырёх полос: виден только при включённой музыке. */
.music-toggle__waves {
  display: none;
  align-items: center;
  gap: 2px;
  height: 15px;
}

.music-toggle__wave {
  width: 2px;
  height: 4px;
  border-radius: 1px;
  background: currentColor;
  animation: music-wave 1.5s var(--ease) infinite;
}

.music-toggle__wave:nth-child(2) {
  animation-duration: 2.1s;
  animation-delay: -0.4s;
}

.music-toggle__wave:nth-child(3) {
  animation-duration: 1.8s;
  animation-delay: -0.9s;
}

.music-toggle__wave:nth-child(4) {
  animation-duration: 2.4s;
  animation-delay: -1.3s;
}

@keyframes music-wave {
  0%,
  100% {
    height: 4px;
  }
  50% {
    height: 14px;
  }
}

:root[data-music="on"] .music-toggle {
  color: var(--text);
  border-color: var(--border-strong);
}

:root[data-music="on"] .music-toggle__waves {
  display: flex;
}

:root[data-music="on"] .music-toggle__off {
  display: none;
}

/* Пока выбор не сделан, точка подсказывает, что музыку можно включить. */
.music-toggle.is-hint::after {
  content: "";
  position: absolute;
  top: 6px;
  right: 6px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  animation: music-hint 2.4s ease-in-out infinite;
}

@keyframes music-hint {
  0%,
  100% {
    opacity: 0.25;
    transform: scale(0.85);
  }
  50% {
    opacity: 1;
    transform: scale(1);
  }
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 38px;
  padding: 0 13px;
  border: 1px solid var(--border);
  border-radius: 11px;
  color: var(--text-muted);
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.lang-toggle:hover {
  color: var(--text);
  border-color: var(--border-strong);
  background: var(--surface);
}

.lang-toggle__text {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.04em;
  /* Фиксированная ширина: подпись меняется между RU и EN. */
  min-width: 2ch;
  text-align: center;
}

.theme-toggle {
  flex: 0 0 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 11px;
  color: var(--text-muted);
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.theme-toggle:hover {
  color: var(--text);
  border-color: var(--border-strong);
  background: var(--surface);
}

.theme-toggle__sun {
  display: none;
}

:root[data-theme="light"] .theme-toggle__moon {
  display: none;
}

:root[data-theme="light"] .theme-toggle__sun {
  display: block;
}

/* ---------- Разделы ---------- */

.tab[hidden] {
  display: none;
}

/* ---------- Обложка ---------- */

.hero {
  position: relative;
  min-height: min(100svh, 860px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 132px var(--pad) 84px;
  overflow: hidden;
}

.hero__glow {
  position: absolute;
  top: -32%;
  left: 50%;
  transform: translateX(-50%);
  width: min(1100px, 130vw);
  height: min(1100px, 130vw);
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(255, 255, 255, 0.075) 0%,
    rgba(255, 255, 255, 0.02) 38%,
    transparent 68%
  );
  pointer-events: none;
}

:root[data-theme="light"] .hero__glow {
  background: radial-gradient(
    circle,
    rgba(0, 0, 0, 0.05) 0%,
    rgba(0, 0, 0, 0.015) 38%,
    transparent 68%
  );
}

.hero__inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: clamp(32px, 6vw, 72px);
  align-items: center;
}

/* Колонки сетки: без этого длинное слово растягивает колонку и ломает вёрстку. */
.hero__text,
.road__body {
  min-width: 0;
}

.hero__eyebrow {
  display: inline-block;
  margin-bottom: 20px;
  padding: 6px 13px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

.hero__title {
  margin-bottom: 24px;
  font-size: clamp(2.3rem, 6.4vw, 4.4rem);
  font-weight: 600;
  line-height: 1.04;
  letter-spacing: -0.035em;
}

.hero__line {
  display: block;
}

.hero__line--muted {
  color: var(--text-dim);
}

.hero__lead {
  max-width: 52ch;
  margin-bottom: 34px;
  font-size: clamp(1rem, 2.1vw, 1.14rem);
  color: var(--text-muted);
  font-weight: 300;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 11px;
  margin-bottom: 52px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 14px 24px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-contrast);
  font-size: 15px;
  font-weight: 500;
  transition: transform 0.2s var(--ease), opacity 0.2s, gap 0.2s var(--ease);
}

.btn:hover {
  transform: translateY(-2px);
  gap: 13px;
}

.btn:active {
  transform: translateY(0);
  opacity: 0.85;
}

.btn--ghost {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--text);
}

.btn--ghost:hover {
  background: var(--surface);
  gap: 9px;
}

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(26px, 5vw, 60px);
  padding-top: 28px;
  border-top: 1px solid var(--border);
}

.stat {
  min-width: 0;
}

.stat__label {
  font-size: 11px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 5px;
}

.stat__value {
  font-size: clamp(1.1rem, 2.6vw, 1.5rem);
  font-weight: 500;
  letter-spacing: -0.015em;
  font-variant-numeric: tabular-nums;
}

/* Декоративный рисунок рядом с заголовком. */
.hero__art-frame {
  position: relative;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
  color: var(--text);
  box-shadow: var(--shadow);
}

.hero__art-frame svg {
  display: block;
  width: 100%;
  height: 100%;
}

.hero__scroll {
  position: absolute;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  z-index: 2;
  width: 26px;
  height: 46px;
  display: grid;
  place-items: center;
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, transparent, var(--border-strong));
  position: relative;
  overflow: hidden;
}

.hero__scroll-line::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 12px;
  background: var(--text);
  animation: scroll-hint 2s ease-in-out infinite;
}

@keyframes scroll-hint {
  0% {
    transform: translateY(-14px);
    opacity: 0;
  }
  40% {
    opacity: 1;
  }
  100% {
    transform: translateY(42px);
    opacity: 0;
  }
}

/* ---------- Заголовок раздела ---------- */

.pagehead {
  position: relative;
  z-index: 2;
  max-width: var(--max);
  margin: 0 auto;
  padding: 132px var(--pad) 0;
}

.pagehead__eyebrow {
  display: inline-block;
  margin-bottom: 16px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 11.5px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.pagehead__title {
  margin-bottom: 18px;
  font-size: clamp(1.9rem, 5.4vw, 3.1rem);
  font-weight: 600;
  line-height: 1.06;
  letter-spacing: -0.032em;
}

.pagehead__lead {
  max-width: 62ch;
  font-size: clamp(0.98rem, 2vw, 1.1rem);
  color: var(--text-muted);
  font-weight: 300;
}

/* ---------- Секции ---------- */

.section {
  position: relative;
  z-index: 2;
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(60px, 9vw, 120px) var(--pad);
}

.section--flush {
  padding-top: clamp(34px, 5vw, 54px);
}

.section__head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: clamp(30px, 4.5vw, 52px);
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.section__head--split {
  justify-content: space-between;
  flex-wrap: wrap;
}

.section__head-main {
  display: flex;
  align-items: baseline;
  gap: 16px;
}

.section__index {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 0.06em;
}

.section__title {
  font-size: clamp(1.4rem, 4vw, 2.1rem);
  font-weight: 500;
  letter-spacing: -0.025em;
}

.section__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  /* Отрицательный отступ справа: подпись остаётся на месте, а область нажатия
     дотягивается до 36px по высоте — минимум для касания пальцем. */
  margin-right: -12px;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 14px;
  color: var(--text-dim);
  transition: color 0.2s, background 0.2s, gap 0.2s var(--ease);
}

.section__link:hover {
  color: var(--text);
  background: var(--surface-hover);
  gap: 12px;
}

/* ---------- Крупные карточки разделов ---------- */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px;
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
  transition: border-color 0.25s, transform 0.25s var(--ease);
}

.card:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
}

.card__cover {
  display: block;
  position: relative;
  aspect-ratio: 20 / 9;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  overflow: hidden;
}

.card__cover svg,
.thread__cover svg,
.product__cover svg,
.doc__cover svg {
  display: block;
  width: 100%;
  height: 100%;
}

.card__body {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px;
}

.card__label {
  font-size: 11px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.card__title {
  font-size: clamp(1.15rem, 2.6vw, 1.4rem);
  font-weight: 500;
  letter-spacing: -0.02em;
}

.card__desc {
  color: var(--text-muted);
  font-weight: 300;
  font-size: 0.96rem;
}

.card__cta {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-top: 6px;
  font-size: 14px;
  font-weight: 500;
  transition: gap 0.2s var(--ease);
}

.card:hover .card__cta {
  gap: 13px;
}

/* ---------- Порядок обучения и шаги покупки ---------- */

.road {
  display: flex;
  flex-direction: column;
}

.road__item {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 22px;
  padding: 26px 4px;
  border-top: 1px solid var(--border);
}

.road__item:last-child {
  border-bottom: 1px solid var(--border);
}

.road__num {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 12px;
  color: var(--text-dim);
  padding-top: 6px;
}

.road__title {
  margin-bottom: 8px;
  font-size: clamp(1.08rem, 2.4vw, 1.28rem);
  font-weight: 500;
  letter-spacing: -0.02em;
}

.road__text {
  max-width: 68ch;
  color: var(--text-muted);
  font-weight: 300;
  font-size: 0.97rem;
}

.road__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  padding: 6px 13px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 12px;
  color: var(--text-muted);
  transition: color 0.2s, border-color 0.2s, gap 0.2s var(--ease);
}

.road__link:hover {
  color: var(--text);
  border-color: var(--border-strong);
  gap: 12px;
}

/* ---------- Панель списка: поиск и сортировка ---------- */

.board__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.search {
  position: relative;
  flex: 1 1 260px;
  display: flex;
  align-items: center;
}

.search__icon {
  position: absolute;
  left: 15px;
  color: var(--text-dim);
  pointer-events: none;
}

.search__input {
  width: 100%;
  height: 44px;
  padding: 0 42px 0 40px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  font-size: 14.5px;
  transition: border-color 0.2s, background 0.2s;
  /* Системный крестик в поле поиска заменён своей кнопкой. */
  appearance: none;
}

.search__input::-webkit-search-cancel-button {
  display: none;
}

.search__input::placeholder {
  color: var(--text-dim);
}

.search__input:hover,
.search__input:focus {
  border-color: var(--border-strong);
  background: var(--surface-hover);
}

.search__clear {
  position: absolute;
  right: 6px;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--text-dim);
  transition: color 0.2s, background 0.2s;
}

.search__clear:hover {
  color: var(--text);
  background: var(--surface-hover);
}

.segment {
  display: flex;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
}

.segment__btn {
  padding: 7px 15px;
  border-radius: 999px;
  font-size: 13.5px;
  color: var(--text-dim);
  transition: color 0.2s, background 0.2s;
}

.segment__btn:hover {
  color: var(--text);
}

.segment__btn.is-active {
  color: var(--accent-contrast);
  background: var(--accent);
}

/* ---------- Фильтры ---------- */

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 16px;
}

.chip {
  padding: 7px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-elevated);
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 12.5px;
  color: var(--text-muted);
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.chip:hover {
  color: var(--text);
  border-color: var(--border-strong);
}

.chip.is-active {
  color: var(--accent-contrast);
  background: var(--accent);
  border-color: var(--accent);
}

.board__count {
  margin-bottom: 20px;
  font-size: 13px;
  color: var(--text-dim);
  font-variant-numeric: tabular-nums;
}

/* ---------- Темы форума ---------- */

.threads {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 14px;
}

.thread {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
  transition: border-color 0.25s, transform 0.25s var(--ease);
}

.thread:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
}

.thread__link {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.thread__cover {
  display: block;
  position: relative;
  aspect-ratio: 20 / 9;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  overflow: hidden;
}

.thread__body {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 20px;
  flex: 1;
}

.thread__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.thread__cat {
  font-size: 11px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--text-dim);
}

/* Уровень читается по числу засечек, а не по цвету: палитра монохромная. */
.thread__level {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 11px;
  color: var(--text-dim);
}

.thread__level::before {
  content: "";
  width: 22px;
  height: 6px;
  border-radius: 2px;
  background: linear-gradient(
    to right,
    currentColor 0 var(--level-fill, 33%),
    var(--border) var(--level-fill, 33%) 100%
  );
}

.thread__level[data-level="1"] {
  --level-fill: 33%;
}

.thread__level[data-level="2"] {
  --level-fill: 66%;
}

.thread__level[data-level="3"] {
  --level-fill: 100%;
}

.thread__title {
  font-size: 1.12rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.32;
}

.thread__excerpt {
  color: var(--text-muted);
  font-weight: 300;
  font-size: 0.93rem;
}

.thread__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 2px;
}

.tag {
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 11px;
  color: var(--text-dim);
}

.thread__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 11px;
  color: var(--text-dim);
  font-variant-numeric: tabular-nums;
}

.threads--compact .thread__excerpt {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ---------- Каталог проектов ---------- */

.products {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 14px;
}

.product {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
  transition: border-color 0.25s, transform 0.25s var(--ease);
}

.product:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
}

.product__link {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.product__cover {
  display: block;
  position: relative;
  aspect-ratio: 20 / 9;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  overflow: hidden;
}

.product__badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  padding: 5px 11px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-contrast);
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 10.5px;
  letter-spacing: 0.04em;
}

.product__body {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 20px;
  flex: 1;
}

.product__cat {
  font-size: 11px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.product__title {
  font-size: 1.14rem;
  font-weight: 500;
  letter-spacing: -0.02em;
}

.product__tagline {
  color: var(--text-muted);
  font-weight: 300;
  font-size: 0.93rem;
}

.product__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.product__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.product__price {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.product__more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  color: var(--text-dim);
  transition: color 0.2s, gap 0.2s var(--ease);
}

.product:hover .product__more {
  color: var(--text);
  gap: 12px;
}

/* Подсветка следует за курсором, координаты задаёт скрипт. */
.thread::before,
.product::before,
.card::before,
.contact__card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0;
  pointer-events: none;
  background: radial-gradient(
    420px circle at var(--mx, 50%) var(--my, 50%),
    var(--spotlight),
    transparent 72%
  );
  transition: opacity 0.3s var(--ease);
}

.thread:hover::before,
.product:hover::before,
.card:hover::before,
.contact__card:hover::before {
  opacity: 1;
}

/* ---------- Пустой результат ---------- */

.empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: clamp(40px, 8vw, 80px) 20px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  text-align: center;
}

.empty__title {
  font-size: 1.1rem;
  font-weight: 500;
}

.empty__hint {
  margin-bottom: 10px;
  color: var(--text-dim);
  font-size: 0.94rem;
}

/* ---------- Заметка ---------- */

.note {
  margin-top: clamp(28px, 5vw, 48px);
  padding: 22px;
  border: 1px solid var(--border);
  border-left: 2px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--surface);
}

.note__title {
  margin-bottom: 8px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.note__text {
  max-width: 72ch;
  color: var(--text-muted);
  font-weight: 300;
  font-size: 0.95rem;
}

/* ---------- Контакты ---------- */

.contact__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(272px, 1fr));
  gap: 13px;
}

.contact__note {
  margin-top: 16px;
  font-size: 13px;
  color: var(--text-dim);
}

.contact__card {
  position: relative;
  display: flex;
  align-items: center;
  gap: 15px;
  width: 100%;
  padding: 19px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
  text-align: left;
  transition: border-color 0.25s, transform 0.25s var(--ease);
}

.contact__card:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
}

.contact__icon {
  position: relative;
  z-index: 1;
  flex: 0 0 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg-elevated);
  color: var(--text);
}

.contact__text {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.contact__label {
  font-size: 11px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.contact__value {
  font-size: 14.5px;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.contact__arrow {
  position: relative;
  z-index: 1;
  margin-left: auto;
  color: var(--text-dim);
  transition: color 0.2s, transform 0.25s var(--ease);
}

.contact__card:hover .contact__arrow {
  color: var(--text);
  transform: translate(2px, -2px);
}

/* ---------- Панель материала ---------- */

.sheet {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: flex;
  justify-content: flex-end;
}

.sheet[hidden] {
  display: none;
}

.sheet__backdrop {
  position: absolute;
  inset: 0;
  background: var(--scrim);
  backdrop-filter: blur(6px);
  animation: fade-in 0.25s var(--ease);
}

@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.sheet__panel {
  position: relative;
  width: min(520px, 100%);
  height: 100%;
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--border-strong);
  background: var(--bg-elevated);
  box-shadow: var(--shadow-lg);
  animation: sheet-slide 0.3s var(--ease);
}

@keyframes sheet-slide {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.sheet__close {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 48px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-muted);
  transition: color 0.2s, background 0.2s;
  flex-shrink: 0;
}
}

.sheet__close:hover {
  color: var(--text);
  background: var(--surface-hover);
}

.sheet__scroll {
  overflow-y: auto;
  overscroll-behavior: contain;
  flex: 1;
}

/* ---------- Содержимое панели ---------- */

.doc {
  display: flex;
  flex-direction: column;
}

.doc__cover {
  display: block;
  aspect-ratio: 24 / 6;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  overflow: hidden;
}

.doc__head {
  padding: 18px clamp(16px, 3vw, 26px) 16px;
  border-bottom: 1px solid var(--border);
}

.doc__top {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
}

.doc__title {
  margin-bottom: 8px;
  font-size: clamp(1.15rem, 3.5vw, 1.5rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.doc__lead {
  max-width: 62ch;
  color: var(--text-muted);
  font-weight: 300;
  font-size: 0.93rem;
}

.doc__price {
  display: inline-block;
  margin-top: 16px;
  padding: 8px 16px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.doc__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  margin-top: 16px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 11.5px;
  color: var(--text-dim);
  font-variant-numeric: tabular-nums;
}

.doc__block {
  padding: 14px clamp(16px, 3vw, 26px);
  border-bottom: 1px solid var(--border);
}

.doc__h {
  margin-bottom: 6px;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.015em;
}

.doc__p {
  max-width: 70ch;
  color: var(--text-muted);
  font-weight: 300;
  font-size: 0.9rem;
}

.doc__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px clamp(16px, 3vw, 26px) 20px;
}

.doc__tags {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.doc__tags-label {
  font-size: 11px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--text-dim);
}

/* ---------- Блок кода ---------- */

.code {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  overflow: hidden;
}

.code__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.code__label {
  font-size: 11px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.code__copy {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 11px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 12px;
  color: var(--text-muted);
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.code__copy:hover {
  color: var(--text);
  border-color: var(--border-strong);
  background: var(--surface-hover);
}

.code__pre {
  margin: 0;
  padding: 16px;
  overflow-x: auto;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 12.5px;
  line-height: 1.72;
  color: var(--text-muted);
  tab-size: 2;
}

.code__pre code {
  font: inherit;
  white-space: pre;
}

/* ---------- Список проверки ---------- */

.check {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.check__item {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  color: var(--text-muted);
  font-weight: 300;
  font-size: 0.95rem;
}

.check__item .icon {
  flex: 0 0 15px;
  margin-top: 5px;
  color: var(--text-dim);
}

/* ---------- Подвал ---------- */

.footer {
  position: relative;
  z-index: 2;
  max-width: var(--max);
  margin: 0 auto;
  padding: 28px var(--pad) 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-dim);
}

.footer__copy {
  font-variant-numeric: tabular-nums;
}

.footer__up {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  transition: color 0.2s;
}

.footer__up:hover {
  color: var(--text);
}

/* ---------- Нижняя панель разделов ---------- */

.tabbar {
  display: none;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 55;
  padding: 8px max(10px, env(safe-area-inset-left)) max(8px, env(safe-area-inset-bottom));
  border-top: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(14px) saturate(140%);
}

.tabbar__item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 6px 2px;
  border-radius: var(--radius-sm);
  background: transparent;
  font-size: 10.5px;
  color: var(--text-dim);
  transition: color 0.16s;
}

.tabbar__item .icon {
  width: 21px;
  height: 21px;
}

.tabbar__item.is-active {
  color: var(--text);
  background: var(--surface-hover);
}

/* ---------- Уведомление ---------- */

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  z-index: 90;
  padding: 12px 20px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--bg-elevated);
  box-shadow: var(--shadow);
  font-size: 13.5px;
  animation: toast-in 0.22s var(--ease);
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translate(-50%, 12px);
  }
  to {
    opacity: 1;
    transform: translate(-50%, 0);
  }
}

/* ---------- Появление при прокрутке ---------- */

[data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* На мобильных: показать всё сразу, без ожидания IntersectionObserver */
@media (max-width: 760px) {
  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---------- Адаптив ---------- */

@media (max-width: 940px) {
  .hero__inner {
    grid-template-columns: 1fr;
  }

  /* Рисунок уходит под текст и становится ниже: заголовок остаётся первым. */
  .hero__art {
    order: 2;
  }

  .hero__art-frame {
    aspect-ratio: 21 / 9;
  }
}

@media (max-width: 760px) {
  .topbar__nav {
    display: none;
  }

  .topbar__mark {
    margin-right: auto;
  }

  .tabbar {
    display: flex;
    gap: 4px;
  }

  /* Место под нижнюю панель, иначе она перекрывает подвал. */
  .footer {
    padding-bottom: 104px;
  }

  .toast {
    bottom: 86px;
  }

  .sheet__panel {
    width: 100%;
    border-left: 0;
  }
}

@media (max-width: 680px) {
  /* На узких экранах у кнопки языка остаётся только подпись. */
  .lang-toggle {
    padding: 0 11px;
  }

  .lang-toggle .icon {
    display: none;
  }

  .hero {
    padding-top: 112px;
    min-height: auto;
  }

  .hero__actions {
    margin-bottom: 42px;
  }

  .hero__actions .btn {
    flex: 1 1 100%;
  }

  .hero__stats {
    gap: 22px 36px;
  }

  .hero__scroll {
    display: none;
  }

  .pagehead {
    padding-top: 110px;
  }

  .threads,
  .products {
    grid-template-columns: 1fr;
  }

  .road__item {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 22px 2px;
  }

  .road__num {
    padding-top: 0;
  }

  .board__bar {
    gap: 10px;
  }

  .segment {
    width: 100%;
  }

  .segment__btn {
    flex: 1;
  }

  .footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .doc__foot .btn {
    width: 100%;
  }
}

/* ---------- Уважение к системным настройкам ---------- */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }

  /* Полосы не анимируются — задаём разную высоту, чтобы значок читался. */
  .music-toggle__wave {
    height: 7px;
  }

  .music-toggle__wave:nth-child(2) {
    height: 13px;
  }

  .music-toggle__wave:nth-child(3) {
    height: 10px;
  }

  .music-toggle__wave:nth-child(4) {
    height: 5px;
  }
}

@media print {
  .topbar,
  .tabbar,
  .grain,
  .scroll-progress,
  .hero__glow,
  .hero__scroll,
  .hero__art,
  .theme-toggle,
  .lang-toggle,
  .music-toggle,
  .search,
  .segment,
  .filters,
  .sheet,
  .toast {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }

  /* В печати нужны все разделы, а не только открытый. */
  .tab[hidden] {
    display: block !important;
  }
}

/* ---------- Custom scrollbar ---------- */
.sheet__scroll::-webkit-scrollbar,
.forum__topics::-webkit-scrollbar {
  width: 6px;
}
.sheet__scroll::-webkit-scrollbar-track,
.forum__topics::-webkit-scrollbar-track {
  background: transparent;
}
.sheet__scroll::-webkit-scrollbar-thumb,
.forum__topics::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 999px;
}
.sheet__scroll::-webkit-scrollbar-thumb:hover,
.forum__topics::-webkit-scrollbar-thumb:hover {
  background: var(--text-dim);
}
/* Firefox */
.sheet__scroll,
.forum__topics {
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}

/* ---------- Auth modal ---------- */
.auth-overlay {
  position: fixed;
  inset: 0;
  z-index: 85;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--scrim);
  backdrop-filter: blur(6px);
  animation: fade-in 0.25s var(--ease);
}
.auth-overlay[hidden] { display: none; }

.auth-box {
  position: relative;
  width: min(420px, calc(100% - 40px));
  padding: 32px 28px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  box-shadow: var(--shadow-lg);
  animation: sheet-slide 0.34s var(--ease);
}

.auth-box__close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-muted);
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.auth-box__close:hover {
  color: var(--text);
  border-color: var(--border-strong);
  background: var(--surface-hover);
}

.auth-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 24px;
  padding: 4px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
}

.auth-tabs__btn {
  flex: 1;
  padding: 9px 16px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dim);
  transition: color 0.2s, background 0.2s;
}
.auth-tabs__btn:hover { color: var(--text); }
.auth-tabs__btn.is-active {
  color: var(--accent-contrast);
  background: var(--accent);
}

.auth-form { display: flex; flex-direction: column; gap: 14px; }
.auth-form[hidden] { display: none; }

.auth-field {
  width: 100%;
  height: 46px;
  padding: 0 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  font-size: 14.5px;
  transition: border-color 0.2s, background 0.2s;
}
.auth-field::placeholder { color: var(--text-dim); }
.auth-field:hover, .auth-field:focus {
  border-color: var(--border-strong);
  background: var(--surface-hover);
  outline: none;
}

.auth-error {
  padding: 10px 14px;
  border: 1px solid rgba(255,80,80,0.25);
  border-radius: var(--radius-sm);
  background: rgba(255,80,80,0.08);
  color: #ff5c5c;
  font-size: 13px;
}
.auth-error[hidden] { display: none; }

.auth-submit {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  width: 100%;
  padding: 14px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-contrast);
  font-size: 15px;
  font-weight: 500;
  transition: transform 0.2s var(--ease), opacity 0.2s;
}
.auth-submit:hover { transform: translateY(-2px); }
.auth-submit:active { transform: translateY(0); opacity: 0.85; }

/* User chip in topbar */
.user-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 13px;
  color: var(--text);
  transition: border-color 0.2s, background 0.2s;
}
.user-chip:hover {
  border-color: var(--border-strong);
  background: var(--surface-hover);
}
.user-chip__name {
  font-weight: 500;
  max-width: 100px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.user-chip__role {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.login-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 18px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text);
  transition: border-color 0.2s, background 0.2s, transform 0.2s var(--ease);
}
.login-btn:hover {
  border-color: var(--border-strong);
  background: var(--surface-hover);
  transform: translateY(-1px);
}

/* ---------- Forum board ---------- */
.forum [data-reveal] {
  opacity: 1;
  transform: none;
  transition: none;
}

.forum__group {
  margin-bottom: 24px;
}

.forum__group-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2px;
}

.forum__group-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.forum__section {
  display: grid;
  grid-template-columns: 44px 1fr auto auto;
  gap: 14px;
  align-items: center;
  padding: 16px 8px;
  border-bottom: 1px solid var(--border);
  border-radius: 0;
  cursor: pointer;
  transition: background 0.2s;
}
.forum__section:hover {
  background: var(--surface-hover);
}

.forum__sec-icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg-elevated);
  color: var(--text);
  flex-shrink: 0;
}
.forum__sec-icon .icon {
  width: 18px;
  height: 18px;
}

.forum__sec-info {
  min-width: 0;
}

.forum__sec-title {
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-bottom: 3px;
}

.forum__sec-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  font-weight: 300;
}

.forum__sec-badge {
  padding: 3px 9px;
  border-radius: 999px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.forum__sec-badge--info {
  border: 1px solid var(--border-strong);
  color: var(--text-dim);
}
.forum__sec-badge--new {
  background: var(--accent);
  color: var(--accent-contrast);
}

.forum__sec-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  min-width: 70px;
  text-align: center;
}
.forum__sec-stat-val {
  font-size: 1rem;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}
.forum__sec-stat-label {
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
}

/* Section topics list */
.forum__back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 13px;
  color: var(--text-muted);
  transition: color 0.2s, border-color 0.2s, gap 0.2s var(--ease);
}
.forum__back:hover {
  color: var(--text);
  border-color: var(--border-strong);
  gap: 12px;
}

.forum__sec-header {
  margin-bottom: 24px;
}
.forum__sec-header-title {
  font-size: clamp(1.4rem, 3.5vw, 1.9rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  margin-bottom: 6px;
}
.forum__sec-header-desc {
  color: var(--text-muted);
  font-weight: 300;
  font-size: 0.97rem;
}

.forum__topic-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 16px 12px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.2s;
}
.forum__topic-row:first-child {
  border-top: 1px solid var(--border);
}
.forum__topic-row:hover {
  background: var(--surface-hover);
}

.forum__topic-main {
  min-width: 0;
}

.forum__topic-top {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
  flex-wrap: wrap;
}

.forum__topic-pin {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-contrast);
}

.forum__topic-title {
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.forum__topic-excerpt {
  font-size: 0.88rem;
  color: var(--text-muted);
  font-weight: 300;
  margin-top: 3px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.forum__topic-meta {
  display: flex;
  gap: 12px;
  margin-top: 6px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 11px;
  color: var(--text-dim);
  font-variant-numeric: tabular-nums;
}

.forum__topic-stats {
  display: flex;
  gap: 16px;
  flex-shrink: 0;
}

.forum__topic-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  min-width: 50px;
  text-align: center;
}
.forum__topic-stat-val {
  font-size: 0.95rem;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}
.forum__topic-stat-label {
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-dim);
}

/* Discussion / posts in sheet */
.discussion {
  padding: 14px clamp(16px, 3vw, 26px);
}

.discussion__title {
  margin-bottom: 16px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.discussion__empty {
  padding: 20px;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.93rem;
}

.post {
  display: flex;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}
.post:first-of-type {
  border-top: 1px solid var(--border);
}

.post__avatar {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-dim);
  flex-shrink: 0;
  text-transform: uppercase;
}

.post__body {
  flex: 1;
  min-width: 0;
}

.post__head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
  flex-wrap: wrap;
}

.post__author {
  font-size: 0.93rem;
  font-weight: 500;
}

.post__role {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 2px 7px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  color: var(--text-dim);
}
.post__role--admin {
  background: var(--accent);
  color: var(--accent-contrast);
  border-color: var(--accent);
}

.post__date {
  font-size: 12px;
  color: var(--text-dim);
  margin-left: auto;
}

.post__text {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-weight: 300;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}

.post__delete {
  margin-top: 8px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border: 1px solid rgba(255,80,80,0.2);
  border-radius: 999px;
  font-size: 11px;
  color: #ff5c5c;
  transition: background 0.2s, border-color 0.2s;
}
.post__delete:hover {
  background: rgba(255,80,80,0.08);
  border-color: rgba(255,80,80,0.35);
}

/* Reply form */
.reply-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 18px;
}

.reply-form__textarea {
  width: 100%;
  min-height: 80px;
  max-height: 200px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: 14px;
  line-height: 1.5;
  resize: vertical;
  transition: border-color 0.2s, background 0.2s;
}
.reply-form__textarea::placeholder { color: var(--text-dim); }
.reply-form__textarea:focus {
  border-color: var(--border-strong);
  background: var(--surface-hover);
  outline: none;
}

.reply-form__actions {
  display: flex;
  justify-content: flex-end;
}

.reply-form__submit {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-contrast);
  font-size: 14px;
  font-weight: 500;
  transition: transform 0.2s var(--ease), opacity 0.2s;
}
.reply-form__submit:hover { transform: translateY(-2px); }
.reply-form__submit:active { transform: translateY(0); opacity: 0.85; }

/* Admin pin toggle */
.pin-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 12px;
  color: var(--text-muted);
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.pin-toggle:hover {
  color: var(--text);
  border-color: var(--border-strong);
  background: var(--surface-hover);
}
.pin-toggle.is-pinned {
  background: var(--accent);
  color: var(--accent-contrast);
  border-color: var(--accent);
}

/* ---------- Forum / auth: мобильная адаптация ---------- */
@media (max-width: 760px) {
  .forum__section {
    grid-template-columns: 40px 1fr;
    gap: 10px;
  }
  .forum__sec-stat {
    display: none;
  }
  .forum__sec-badge {
    display: none;
  }
  .forum__topic-stats {
    display: none;
  }
  .login-btn span { display: none; }
  .login-btn { padding: 8px 12px; }
}