/* ===== variables.css ===== */
/* ===== VIONCHIKS — ДИЗАЙН-СИСТЕМА =====
   Профессиональная палитра: глубокий графит + шампанское золото.
   Тональные (приглушённые) акценты, монохромная база, тёплый белый текст. */

:root {
  /* — Фон — */
  --bg: #0a0a0d;
  --bg-2: #0d0d12;
  --panel: #121218;
  --panel-2: #17171f;
  --line: rgba(255, 255, 255, 0.07);
  --line-strong: rgba(255, 255, 255, 0.14);

  /* — Текст — */
  --text: #ece9e1;
  --muted: #a09b8f;
  --faint: #6e6a60;

  /* — Акценты (тональные) — */
  --gold: #c9a86a;            /* шампанское */
  --gold-bright: #e6c98a;
  --gold-deep: #a9865a;
  --gold-soft: rgba(201, 168, 106, 0.14);
  --gold-line: rgba(201, 168, 106, 0.42);
  --violet: #9b8cc4;          /* пыльная сирень — редко */
  --violet-soft: rgba(155, 140, 196, 0.14);
  --teal: #6fa8b0;            /* приглушённый циан — редко */
  --danger: #d06a5a;          /* приглушённый красный */

  /* — Шрифты — */
  --font-display: "Unbounded", "Playfair Display", Georgia, "Times New Roman", serif;
  --font-body: "Inter", "Manrope", -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  /* — Формы — */
  --radius: 18px;
  --radius-sm: 10px;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
  --shadow-soft: 0 14px 44px rgba(0, 0, 0, 0.35);

  /* — Прочее — */
  --nav-h: 74px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ===== base.css ===== */
/* ===== БАЗА ===== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001s !important;
    transition-duration: 0.001s !important;
  }
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  letter-spacing: 0.1px;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection {
  background: var(--gold);
  color: #101010;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--gold);
  text-decoration: none;
}

a:hover {
  color: var(--gold-bright);
}

/* ===== ТИПОГРАФИКА ===== */
h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: 0.4px;
}

h1 {
  font-size: clamp(48px, 9vw, 104px);
  letter-spacing: 4px;
  text-transform: uppercase;
}

h2 {
  font-size: clamp(30px, 5vw, 46px);
  letter-spacing: 1px;
}

h3 {
  font-size: 22px;
}

p {
  text-wrap: balance;
}

/* градиентный текст для акцентов */
.gradient-text {
  background: linear-gradient(120deg, var(--gold-bright), #fff 45%, var(--gold));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ===== КНОПКИ ===== */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 30px;
  border-radius: 60px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.6px;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.25s var(--ease), box-shadow 0.3s var(--ease), background 0.3s, color 0.3s, border-color 0.3s;
  user-select: none;
}

.btn-arrow {
  transition: transform 0.25s var(--ease);
}

.btn:hover .btn-arrow {
  transform: translateX(4px);
}

.btn--primary {
  color: #15130e;
  background: linear-gradient(135deg, var(--gold-bright), var(--gold-deep));
  box-shadow: 0 10px 34px rgba(201, 168, 106, 0.28);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 46px rgba(201, 168, 106, 0.4);
  color: #15130e;
}

.btn--ghost {
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
  border-color: var(--line-strong);
}

.btn--ghost:hover {
  transform: translateY(-2px);
  border-color: var(--gold-line);
  color: var(--gold-bright);
  box-shadow: 0 10px 30px rgba(201, 168, 106, 0.12);
}

.btn--sm {
  padding: 10px 20px;
  font-size: 13px;
}

.btn--lg {
  padding: 18px 40px;
  font-size: 17px;
}

/* магнитная кнопка: сдвиг от курсора */
.btn--magnetic {
  will-change: transform;
}

/* ===== ЛОГОТИП VI / ONCHIKS ===== */
.logo-mark {
  display: block;
  width: 46px;
  height: auto;
  overflow: visible;
}

.logo-mark--lg { width: 64px; }
.logo-mark--xl { width: 110px; }

.logo-ring {
  fill: none;
  stroke: var(--gold);
  stroke-width: 2;
  opacity: 0.9;
}

.logo-vi {
  fill: var(--gold-bright);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 27px;
  text-anchor: middle;
  letter-spacing: 1px;
}

.logo-onchiks {
  fill: var(--muted);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 10.5px;
  letter-spacing: 0.6px;
  text-anchor: middle;
}

/* ===== БЕЙДЖИ / ЧИПЫ ===== */
.chip {
  display: inline-flex;
  align-items: center;
  padding: 7px 16px;
  border-radius: 60px;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.03);
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
}

.chip--gold {
  color: var(--gold-bright);
  border-color: var(--gold-line);
  background: var(--gold-soft);
}

/* ===== ЗАГОЛОВКИ СЕКЦИЙ ===== */
.section-head {
  text-align: center;
  margin-bottom: 44px;
}

.section-eyebrow {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 5px;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 12px;
}

.section-title {
  margin-bottom: 12px;
  color: var(--text);
}

.section-desc {
  color: var(--muted);
  max-width: 520px;
  margin: 0 auto;
}

/* ===== КАРТОЧКИ ===== */
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px;
  box-shadow: var(--shadow-soft);
}

/* ===== LIVE ТОЧКА ===== */
.live-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--danger);
  box-shadow: 0 0 0 0 rgba(208, 106, 90, 0.6);
  animation: livePing 1.6s ease-out infinite;
}

.live-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--danger);
  text-transform: uppercase;
}

/* доступность */
:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: 4px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

/* ===== background.css ===== */
/* ===== ФОН: свечения, сетка, зерно ===== */
.bg-glow {
  position: fixed;
  width: 60vmax;
  height: 60vmax;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.5;
  pointer-events: none;
  z-index: -2;
  transition: opacity 0.8s ease;
}

.bg-glow--gold {
  top: -18vmax;
  left: -14vmax;
  background: radial-gradient(circle, rgba(201, 168, 106, 0.22), transparent 65%);
}

.bg-glow--violet {
  bottom: -20vmax;
  right: -16vmax;
  background: radial-gradient(circle, rgba(155, 140, 196, 0.16), transparent 65%);
}

/* сетка */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -3;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.9), transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.9), transparent 75%);
  pointer-events: none;
}

/* зерно (кинематографичная плёнка) */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* вертикальный светлый градиент внизу */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -4;
  background:
    radial-gradient(ellipse 90% 55% at 50% -5%, rgba(201, 168, 106, 0.07), transparent 60%),
    radial-gradient(ellipse 70% 45% at 90% 100%, rgba(155, 140, 196, 0.05), transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
}

/* ===== layout.css ===== */
/* ===== КАРКАС ===== */
.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.container--narrow {
  max-width: 820px;
}

.block {
  padding: 96px 0;
  scroll-margin-top: calc(var(--nav-h) + 12px);
}

section[id],
main [id] {
  scroll-margin-top: calc(var(--nav-h) + 16px);
}

main {
  display: block;
}

/* ===== ui.css ===== */
/* ===== UI: прелоудер, прогресс, курсор, тосты, кнопка наверх ===== */


/* --- ПРОГРЕСС ЧТЕНИЯ --- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 9000;
  background: transparent;
}

.scroll-progress span {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--gold-deep), var(--gold-bright));
  box-shadow: 0 0 12px rgba(201, 168, 106, 0.5);
  transition: width 0.08s linear;
}

/* --- КНОПКА НАВЕРХ --- */
.to-top {
  position: fixed;
  right: 26px;
  bottom: 26px;
  z-index: 8000;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 1px solid var(--gold-line);
  background: rgba(18, 18, 24, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--gold-bright);
  font-size: 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity 0.35s var(--ease), transform 0.35s var(--ease), visibility 0.35s;
}

.to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.to-top:hover {
  background: var(--gold);
  color: #15130e;
  border-color: var(--gold);
}

/* --- ТОСТЫ --- */
.toast-wrap {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 10002;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  border-radius: 14px;
  background: var(--panel-2);
  border: 1px solid var(--gold-line);
  box-shadow: var(--shadow);
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  opacity: 0;
  transform: translateY(12px) scale(0.97);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
}

.toast.show {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.toast-icon {
  color: var(--gold);
}

/* ===== preloader.css ===== */
/* ============================================================
   ПРЕЛОУДЕР — минималистичный, чистый, профессиональный.
   Логотип + тонкое кольцо загрузки + аккуратный прогресс-бар.
   ============================================================ */

html.is-preload { overflow: hidden; }

.preloader {
  position: fixed;
  inset: 0;
  z-index: 10000;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  color: var(--text);
  opacity: 1;
  visibility: visible;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

/* очень мягкое золотое свечение по центру — тёплый фон, без неона */
.preloader::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 44%;
  width: 680px;
  height: 680px;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(201, 168, 106, 0.07), transparent 62%);
  pointer-events: none;
}

.preloader.done {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

/* --- ядро --- */
.preload-core {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  text-align: center;
  animation: preloadIn 0.7s var(--ease) both;
}

@keyframes preloadIn {
  0%   { opacity: 0; transform: translateY(14px); }
  100% { opacity: 1; transform: none; }
}

.preload-logo { position: relative; }

.preload-svg {
  width: 92px;
  height: auto;
  display: block;
}

/* тонкое вращающееся кольцо вокруг логотипа */
.preload-spinner {
  position: absolute;
  left: 50%;
  top: 48%;
  width: 132px;
  height: 132px;
  margin: -66px 0 0 -66px;
  border-radius: 50%;
  pointer-events: none;
  border: 2px solid rgba(201, 168, 106, 0.12);
  border-top-color: var(--gold);
  animation: preloadSpin 1.4s linear infinite;
}

@keyframes preloadSpin {
  100% { transform: rotate(360deg); }
}

/* --- wordmark VIONCHIKS --- */
.preload-brand {
  font-family: var(--font-display);
  font-size: 25px;
  font-weight: 700;
  letter-spacing: 0.42em;
  margin-left: 0.42em;
  line-height: 1;
  background: linear-gradient(90deg, var(--gold-deep), var(--gold-bright) 50%, var(--gold-deep));
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: preloadShine 3.4s linear infinite;
}

@keyframes preloadShine {
  0%   { background-position: 120% 0; }
  100% { background-position: -80% 0; }
}

/* --- прогресс --- */
.preload-progress {
  width: 240px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.preload-track {
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--line);
  overflow: hidden;
}

.preload-fill {
  display: block;
  height: 100%;
  width: 0%;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--gold-deep), var(--gold-bright));
  transition: width 0.2s ease;
}

.preload-meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.preload-pct {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.preload-pct em {
  font-style: normal;
  font-size: 11px;
  color: var(--gold);
  margin-left: 1px;
}

.preload-status {
  font-size: 12px;
  color: var(--muted);
  min-height: 1.2em;
}

.preload-tag {
  margin-top: 2px;
  font-size: 10px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--faint);
}

/* --- выход: чистый fade-подъём --- */
.preloader.preload-go {
  animation: preloadOut 0.6s var(--ease) forwards;
}

@keyframes preloadOut {
  0%   { opacity: 1; transform: none; }
  100% { opacity: 0; transform: translateY(-10px); }
}

.preloader.preload-go .preload-core {
  animation: preloadCoreOut 0.55s var(--ease) forwards;
}

@keyframes preloadCoreOut {
  0%   { opacity: 1; transform: none; }
  100% { opacity: 0; transform: scale(1.02); }
}

/* --- сайт плавно проявляется --- */
body.loaded #nav,
body.loaded main {
  animation: siteIn 0.7s var(--ease) 0.1s both;
}

@keyframes siteIn {
  0%   { opacity: 0; transform: translateY(12px); }
  100% { opacity: 1; transform: none; }
}

/* --- адаптив --- */
@media (max-width: 600px) {
  .preload-svg { width: 76px; }
  .preload-brand { font-size: 20px; }
  .preload-progress { width: 200px; }
}

/* --- уменьшение движения --- */
@media (prefers-reduced-motion: reduce) {
  .preloader * { animation: none !important; }
}