/* ОМНИ-ЛЮКС — дизайн-токены и базовая типографика */

@font-face {
  font-family: 'Golos Text';
  src: url('../assets/fonts/golos-text-400.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Golos Text';
  src: url('../assets/fonts/golos-text-500.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Golos Text';
  src: url('../assets/fonts/golos-text-700.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg-hero: #0a0b12;
  --bg: #12141f;
  --text: #f5f2eb;
  --accent: #7eb8ff;
  --text-dim: #b8bcc8;
  --font-serif: Georgia, 'Times New Roman', serif;
  --font-sans: 'Golos Text', system-ui, -apple-system, sans-serif;
  --container: 1200px;
  --text-width: 720px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: clamp(16px, 1.6vw, 20px);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 40px);
}

/* ---------- Hero ---------- */

.hero {
  min-height: 100vh;
  min-height: 100svh;
  background: var(--bg-hero);
  display: flex;
  align-items: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero-kicker {
  font-size: clamp(12px, 1.2vw, 14px);
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: clamp(24px, 4vh, 48px);
}

.hero h1 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(56px, 11vw, 128px);
  line-height: 1.05;
  letter-spacing: 0.02em;
}

.hero-sub {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(20px, 2.6vw, 32px);
  color: var(--text-dim);
  margin-top: clamp(16px, 3vh, 32px);
}

.hero-beam {
  width: min(760px, 80vw);
  height: 2px;
  margin: clamp(32px, 6vh, 64px) auto;
  background: linear-gradient(90deg, transparent, var(--accent) 20%, #fff 50%, var(--accent) 80%, transparent);
  box-shadow: 0 0 18px 2px rgba(126, 184, 255, 0.55);
}

.hero-hint {
  font-size: clamp(13px, 1.3vw, 15px);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-dim);
  animation: hint-pulse 2.6s ease-in-out infinite;
}

@keyframes hint-pulse {
  0%, 100% { opacity: 0.45; }
  50% { opacity: 1; }
}

/* ---------- Секции ---------- */

.section {
  background: var(--bg);
  padding: clamp(80px, 12vw, 140px) 0;
}

.section h2 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(38px, 6vw, 70px);
  line-height: 1.12;
  max-width: 900px;
  margin-bottom: clamp(28px, 4vw, 48px);
  overflow-wrap: break-word;
}

.overline {
  font-size: clamp(12px, 1.2vw, 14px);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: clamp(16px, 2.5vw, 28px);
}

.prose {
  max-width: var(--text-width);
}

.prose p + p {
  margin-top: 1.2em;
}

.lead-text {
  font-size: clamp(20px, 3.2vw, 32px);
  line-height: 1.45;
}

.monolog p {
  font-family: var(--font-serif);
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.4;
}

.monolog p + p {
  margin-top: 0.6em;
}

.thesis {
  border-left: 2px solid var(--accent);
  padding-left: clamp(16px, 2.5vw, 28px);
  margin: clamp(28px, 4vw, 48px) 0;
  max-width: 860px;
}

.thesis p {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(20px, 2.8vw, 30px);
  line-height: 1.45;
}

/* ---------- Разделитель и заголовок-удара ---------- */

.divider {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, transparent, rgba(245, 242, 235, 0.5), transparent);
}

.section-strike {
  text-align: center;
  padding: clamp(64px, 9vw, 110px) 0;
}

.strike-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(16px, 3vw, 32px);
  margin: 0;
  max-width: none;
}

.strike-title span {
  font-family: var(--font-serif);
  font-size: clamp(34px, 5.4vw, 64px);
  color: var(--accent);
  white-space: nowrap;
}

@media (max-width: 560px) {
  .strike-title span {
    white-space: normal;
  }
}

.strike-title::before,
.strike-title::after {
  content: '';
  width: clamp(40px, 8vw, 120px);
  height: 2px;
  background: var(--accent);
  opacity: 0.6;
}

#s04 .strike-title {
  margin-top: clamp(36px, 5vw, 64px);
}

/* ---------- Карточки фактов ---------- */

.fact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: clamp(16px, 2.5vw, 28px);
  margin: clamp(32px, 5vw, 56px) 0;
}

.fact-card {
  background: rgba(126, 184, 255, 0.06);
  border: 1px solid rgba(126, 184, 255, 0.22);
  border-radius: 14px;
  padding: clamp(20px, 3vw, 32px);
}

.fact-label {
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.fact-card > p:last-child {
  color: var(--text-dim);
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.6;
}

/* ---------- Фигуры ---------- */

.figure {
  margin: clamp(24px, 4vw, 44px) 0;
  border-radius: 14px;
  overflow: hidden;
}

.figure img {
  width: 100%;
}

.figure-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(16px, 2.5vw, 28px);
  margin: clamp(24px, 4vw, 44px) 0;
}

.figure-row .figure {
  margin: 0;
}

/* ---------- Формулы ---------- */

.formula {
  margin: clamp(28px, 4vw, 44px) 0;
  padding: clamp(16px, 2.5vw, 28px);
  text-align: center;
  font-family: var(--font-serif);
  font-size: clamp(22px, 3vw, 32px);
  color: var(--accent);
  background: rgba(126, 184, 255, 0.05);
  border-radius: 14px;
  overflow-x: auto;
}

/* ---------- Виджеты ---------- */

.widget {
  margin: clamp(28px, 4vw, 44px) 0 12px;
  max-width: 640px;
  background: var(--bg-hero);
  border: 1px solid rgba(126, 184, 255, 0.22);
  border-radius: 16px;
  padding: clamp(20px, 3vw, 32px);
}

.beam {
  height: 56px;
  border-radius: 10px;
  background: hsl(210, 90%, 55%);
  box-shadow: 0 0 24px 4px rgba(126, 184, 255, 0.35);
  transition: background 0.15s ease, opacity 0.15s ease;
  margin-bottom: 20px;
}

.widget-controls input[type="range"] {
  width: 100%;
  height: 32px;
  accent-color: var(--accent);
  cursor: pointer;
}

.widget-label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 14px;
  color: var(--text-dim);
  margin-bottom: 6px;
}

.widget-value {
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.widget-controls .widget-label + input {
  margin-bottom: 16px;
}

.widget-note {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 4px;
}

.widget-canvas {
  width: 100%;
  height: auto;
  display: block;
  margin-bottom: 20px;
  border-radius: 10px;
  background: rgba(126, 184, 255, 0.04);
}

.widget-toggle {
  width: 100%;
}

/* ---------- Доплер ---------- */

.doppler-stage {
  position: relative;
  margin-bottom: 12px;
}

.doppler-stage .widget-canvas {
  margin-bottom: 0;
}

.doppler-source {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  cursor: grab;
  border-radius: 10px;
}

.doppler-source:active {
  cursor: grabbing;
}

.doppler-source:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- «Ваш опыт» ---------- */

.summary-title {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(24px, 3vw, 34px);
  margin-bottom: 16px;
}

.summary-list {
  list-style: none;
  line-height: 2;
  color: var(--text-dim);
  font-size: clamp(15px, 1.6vw, 17px);
}

.summary-list strong {
  color: var(--accent);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

.summary-list em {
  opacity: 0.6;
}

.summary-voice {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid rgba(126, 184, 255, 0.22);
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(16px, 1.9vw, 20px);
  color: var(--text);
}

.widget-hint {
  font-size: 13px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: clamp(24px, 4vw, 40px);
}

/* ---------- Лаборатория ---------- */

.lab-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2.5vw, 28px);
  margin: clamp(32px, 5vw, 56px) 0 clamp(20px, 3vw, 32px);
}

.lab-column {
  border: 1px solid rgba(126, 184, 255, 0.22);
  border-radius: 14px;
  padding: clamp(20px, 3vw, 32px);
  text-align: center;
}

.lab-column-title {
  font-size: clamp(14px, 1.6vw, 18px);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--accent);
}

.lab-status {
  font-size: clamp(13px, 1.4vw, 15px);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-top: 10px;
}

.lab-status::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  margin-right: 10px;
  box-shadow: 0 0 8px rgba(126, 184, 255, 0.8);
}

/* ---------- Финал ---------- */

.final {
  text-align: center;
}

.final-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(12px, 2vw, 20px);
}

.btn {
  font-family: var(--font-sans);
  font-size: clamp(14px, 1.5vw, 16px);
  letter-spacing: 0.08em;
  color: var(--text);
  background: transparent;
  border: 1px solid rgba(245, 242, 235, 0.35);
  border-radius: 999px;
  padding: 14px 28px;
  cursor: pointer;
  text-decoration: none;
  transition: border-color 0.2s, background 0.2s;
}

.btn:hover:not(:disabled),
.btn:focus-visible:not(:disabled) {
  border-color: var(--accent);
  background: rgba(126, 184, 255, 0.08);
}

.btn:disabled {
  opacity: 0.45;
  cursor: default;
}

.about-panel {
  max-width: var(--text-width);
  margin: clamp(28px, 4vw, 44px) auto 0;
  text-align: left;
  color: var(--text-dim);
  border: 1px solid rgba(126, 184, 255, 0.22);
  border-radius: 14px;
  padding: clamp(20px, 3vw, 32px);
}

/* ---------- Появление по скроллу ---------- */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero-hint {
    animation: none;
  }

  html {
    scroll-behavior: auto;
  }
}

/* ---------- Адаптив ---------- */

@media (max-width: 960px) {
  .fact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .lab-columns {
    grid-template-columns: 1fr;
  }

  .final-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .figure-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .btn {
    width: 100%;
  }

  .monolog p {
    font-size: clamp(19px, 5.6vw, 24px);
  }

  .hero-hint {
    font-size: 12px;
    letter-spacing: 0.1em;
  }

  .hero-kicker {
    letter-spacing: 0.18em;
  }
}