/* ============================================================
   КУЛЬТУРНЫЙ КОД РОССИИ — design tokens & shared styles
   ============================================================ */

:root {
  /* Palette */
  --bg: #0a0a0a;
  --bg-elevated: #141414;
  --bg-card: #16161a;
  --ink: #f5f0e6;
  --ink-muted: rgba(245, 240, 230, 0.55);
  --ink-dim: rgba(245, 240, 230, 0.32);
  --hairline: rgba(245, 240, 230, 0.1);
  --hairline-strong: rgba(245, 240, 230, 0.18);

  --lime: #d4ff4f;
  --violet: #7c6bff;
  --gold: #e8c547;
  --rose: #f5b3a8;

  /* Density — overridden by [data-density] */
  --section-pad: 160px;
  --period-gap: 220px;
  --row-pad: 96px;

  /* Type */
  --font-display: 'Unbounded', 'Inter', system-ui, sans-serif;
  --font-serif: 'Old Standard TT', 'PT Serif', Georgia, serif;
  --font-body: 'Onest', 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  /* Layout */
  --maxw: 1440px;
  --gutter: 48px;
}

[data-density="compact"] {
  --section-pad: 96px;
  --period-gap: 140px;
  --row-pad: 60px;
}
[data-density="spacious"] {
  --section-pad: 220px;
  --period-gap: 320px;
  --row-pad: 140px;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body { overflow-x: hidden; }

p, li, dt, dd, blockquote, figcaption, caption {
  overflow-wrap: break-word;
  hyphens: auto;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

::selection { background: var(--lime); color: #0a0a0a; }

/* ========== Typography utilities ========== */
.t-display {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 0.92;
  text-transform: uppercase;
}
.t-serif {
  font-family: var(--font-serif);
  font-weight: 400;
  font-style: italic;
  letter-spacing: 0.005em;
  line-height: 1.05;
}
.t-mono {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.t-kicker {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

/* ========== Layout ========== */
.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
@media (max-width: 720px) {
  :root { --gutter: 20px; }
}

/* ========== Nav ========== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  padding: 18px 0;
  backdrop-filter: blur(14px);
  background: linear-gradient(180deg, rgba(10,10,10,0.85), rgba(10,10,10,0.55));
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: nowrap;
}
.nav-logo {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.04em;
  font-size: 14px;
  text-transform: uppercase;
  flex-shrink: 0;
  white-space: nowrap;
}
.nav-logo .dot {
  width: 8px; height: 8px;
  background: var(--lime);
  border-radius: 50%;
  display: inline-block;
  transform: translateY(-2px);
}
.nav-logo .serif {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  font-size: 13px;
  color: var(--ink-muted);
  letter-spacing: 0;
  text-transform: none;
}
.nav-links {
  display: flex;
  gap: 20px;
  font-size: 13px;
  letter-spacing: 0.04em;
  flex-wrap: nowrap;
}
.nav-links a {
  opacity: 0.7;
  transition: opacity 0.2s;
  white-space: nowrap;
}
.nav-links a:hover { opacity: 1; color: var(--lime); }
.nav-cta {
  padding: 10px 18px;
  border: 1px solid var(--hairline-strong);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: all 0.2s;
  font-family: var(--font-display);
  font-weight: 500;
  flex-shrink: 0;
  white-space: nowrap;
}
.nav-cta:hover {
  background: var(--lime);
  color: #0a0a0a;
  border-color: var(--lime);
}
@media (max-width: 900px) {
  .nav-links { display: none; }
}

/* ========== Hero ========== */
.hero {
  min-height: 100vh;
  padding: 140px 0 80px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(245,240,230,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245,240,230,0.04) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at 50% 40%, #000 30%, transparent 80%);
  pointer-events: none;
}
.hero-meta {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
  position: relative;
  z-index: 2;
}
.hero-meta-cell .label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  margin-bottom: 6px;
}
.hero-meta-cell .value {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.04em;
}
.hero-title {
  position: relative;
  z-index: 2;
  margin: 80px 0 60px;
}
.hero-title h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(52px, 9.5vw, 160px);
  line-height: 0.88;
  letter-spacing: -0.03em;
  margin: 0;
  text-transform: uppercase;
}
.hero-title h1 .serif-accent {
  display: inline-block;
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.01em;
  text-transform: none;
  color: var(--lime);
  transform: translateY(-0.05em);
  font-size: 0.88em;
}
.hero-title h1 .line {
  display: block;
}
.hero-bottom {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  align-items: end;
  position: relative;
  z-index: 2;
}
.hero-lede {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(20px, 1.6vw, 26px);
  line-height: 1.35;
  color: var(--ink);
  max-width: 520px;
}
.hero-lede .em {
  color: var(--lime);
  font-style: italic;
}
.hero-stats {
  display: flex;
  gap: 32px;
}
.hero-stat {
  flex: 1;
}
.hero-stat .n {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 56px;
  line-height: 1;
  letter-spacing: -0.02em;
}
.hero-stat .label {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.hero-scroll {
  display: flex;
  align-items: center;
  gap: 12px;
  justify-self: end;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-muted);
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  padding: 12px 0;
}
.hero-scroll::after {
  content: "";
  width: 1px;
  height: 60px;
  background: linear-gradient(180deg, var(--lime), transparent);
}

@media (max-width: 900px) {
  .hero-meta { grid-template-columns: 1fr 1fr; }
  .hero-bottom { grid-template-columns: 1fr; }
  .hero-scroll { display: none; }
}

/* ========== Manifesto ========== */
.manifesto {
  padding: var(--section-pad) 0;
  border-top: 1px solid var(--hairline);
  position: relative;
}
.manifesto-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 80px;
  align-items: start;
}
.manifesto-grid h2 {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(28px, 3.8vw, 58px);
  line-height: 1.02;
  margin: 0;
  letter-spacing: -0.01em;
}
.manifesto-grid h2 .lime { color: var(--lime); }
.manifesto-body p {
  font-size: 19px;
  line-height: 1.55;
  margin: 0 0 20px;
  color: var(--ink);
  max-width: 640px;
}
.manifesto-body p + p { color: var(--ink-muted); }
@media (max-width: 900px) {
  .manifesto-grid { grid-template-columns: 1fr; gap: 32px; }
}

/* ========== Filter chips ========== */
.filter-bar {
  padding: 18px 0 16px;
  position: sticky;
  top: 57px;
  background: rgba(10,10,10,0.92);
  backdrop-filter: blur(14px);
  z-index: 20;
}
.filter-row {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.filter-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-right: 8px;
}
.chip {
  padding: 8px 16px;
  border: 1px solid var(--hairline-strong);
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
  transition: all 0.18s ease;
  cursor: pointer;
  white-space: nowrap;
}
.chip:hover {
  border-color: var(--lime);
  color: var(--lime);
}
.chip.active {
  background: var(--lime);
  color: #0a0a0a;
  border-color: var(--lime);
}
.chip .dot {
  display: inline-block;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--ink-muted);
  margin-right: 8px;
  vertical-align: middle;
  transform: translateY(-1px);
}
.chip.active .dot { background: #0a0a0a; }

/* ========== Timeline ========== */
.timeline {
  padding: 80px 0 var(--section-pad);
  position: relative;
}
.timeline::before {
  content: "";
  position: absolute;
  left: calc(50% - 0.5px);
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--hairline) 8%, var(--hairline) 92%, transparent);
  pointer-events: none;
}
@media (max-width: 1100px) {
  .timeline::before { display: none; }
}

.period {
  padding: var(--row-pad) 0;
  display: grid;
  grid-template-columns: 280px 1fr 1fr;
  gap: 56px;
  position: relative;
  border: none;
  transition: opacity 0.4s ease, filter 0.4s ease;
}
.period[data-dimmed="true"] {
  opacity: 0.28;
  filter: saturate(0.4);
}
.period.era-read .period-marker .num::after {
  content: " · прочитано";
  color: var(--lime);
  opacity: 0.7;
}
.period-marker {
  position: sticky;
  top: 140px;
  align-self: start;
  height: fit-content;
}
.period-marker .num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--ink-muted);
  text-transform: uppercase;
}
.period-marker .years {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(32px, 4vw, 56px);
  line-height: 0.9;
  letter-spacing: -0.02em;
  margin: 12px 0 14px;
}
.period-marker .century {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(18px, 2.2vw, 28px);
  color: var(--lime);
  letter-spacing: -0.01em;
}
.period-marker .roman {
  display: block;
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--ink-muted);
  margin-top: 12px;
  letter-spacing: 0.1em;
}

.period-body h3 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-style: italic;
  font-size: clamp(24px, 2.8vw, 44px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  margin: 0 0 18px;
}
.period-body .kicker {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--lime);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.period-body .lede {
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink-muted);
  margin: 0 0 28px;
  max-width: 520px;
}
.micro-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.micro-list li {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 16px;
  padding: 14px 0;
  border-top: 1px solid var(--hairline);
  align-items: baseline;
}
.micro-list li:last-child {
  border-bottom: 1px solid var(--hairline);
}
.micro-list .idx {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--lime);
  letter-spacing: 0.1em;
}
.micro-list .name {
  font-size: 15px;
  line-height: 1.4;
  color: var(--ink);
}
.micro-list .name em {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--ink);
}
.period-cta {
  margin-top: 28px;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 16px 24px;
  border: 1px solid var(--hairline-strong);
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: all 0.2s;
  cursor: pointer;
}
.period-cta:hover {
  background: var(--lime);
  color: #0a0a0a;
  border-color: var(--lime);
}
.period-cta.disabled {
  opacity: 0.35;
  cursor: default;
  pointer-events: none;
  border-style: dashed;
}
.period-cta .arrow {
  font-size: 14px;
  transition: transform 0.2s;
}
.period-cta:hover .arrow { transform: translateX(4px); }

.period-visual {
  align-self: start;
  position: relative;
}
.period-visual .tag {
  position: absolute;
  top: 16px; left: 16px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--ink);
  background: rgba(0,0,0,0.5);
  padding: 6px 10px;
  border-radius: 4px;
  text-transform: uppercase;
  z-index: 2;
  backdrop-filter: blur(8px);
}
.period-visual .themes {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.theme-pill {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 4px 10px;
  border: 1px solid var(--hairline-strong);
  border-radius: 999px;
  color: var(--ink-muted);
}
.theme-pill[data-active] {
  border-color: var(--lime);
  color: var(--lime);
}

@media (max-width: 1100px) {
  .period { grid-template-columns: 1fr; gap: 24px; }
  .period-marker { position: static; }
}

/* ========== Image placeholder ========== */
.img-slot {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 5;
  background:
    repeating-linear-gradient(
      135deg,
      rgba(245,240,230,0.04) 0 6px,
      transparent 6px 12px
    ),
    var(--bg-card);
  border: 1px solid var(--hairline);
  border-radius: 4px;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  padding: 20px;
  transition: transform 0.4s ease, border-color 0.3s;
}
.img-slot[data-ratio="wide"] { aspect-ratio: 16/10; }
.img-slot[data-ratio="square"] { aspect-ratio: 1/1; }
.img-slot[data-ratio="tall"] { aspect-ratio: 3/4; }
.img-slot:hover {
  border-color: var(--lime);
}
.img-slot .caption {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-muted);
  max-width: 80%;
  position: relative;
  z-index: 2;
}
.img-slot .caption .lime { color: var(--lime); }
.img-slot .corner {
  position: absolute;
  top: 12px; right: 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--ink-dim);
  text-transform: uppercase;
  z-index: 2;
}
.img-slot.violet-tint {
  background:
    repeating-linear-gradient(
      135deg,
      rgba(124,107,255,0.08) 0 6px,
      transparent 6px 12px
    ),
    var(--bg-card);
}
.img-slot.lime-tint {
  background:
    repeating-linear-gradient(
      135deg,
      rgba(212,255,79,0.08) 0 6px,
      transparent 6px 12px
    ),
    var(--bg-card);
}
.img-slot.gold-tint {
  background:
    repeating-linear-gradient(
      135deg,
      rgba(232,197,71,0.08) 0 6px,
      transparent 6px 12px
    ),
    var(--bg-card);
}

/* ========== Footer ========== */
.footer {
  border-top: 1px solid var(--hairline);
  padding: 80px 0 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.footer-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 5vw, 72px);
  text-transform: uppercase;
  letter-spacing: -0.03em;
  line-height: 0.92;
  margin: 0;
}
.footer-title .serif {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  color: var(--lime);
  text-transform: none;
}
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin: 0 0 14px;
  font-weight: 400;
}
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { padding: 6px 0; font-size: 14px; }
.footer-col li a:hover { color: var(--lime); }
.footer-legal {
  margin-top: 60px;
  padding-top: 28px;
  border-top: 1px solid var(--hairline);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-legal { flex-direction: column; gap: 16px; align-items: flex-start; }
}

/* ========== Animations / fade-ins ========== */
/* transform-only (no opacity) — контент виден даже без IntersectionObserver */
@keyframes revealIn {
  from { transform: translateY(28px); }
  to   { transform: translateY(0); }
}
.reveal.in {
  animation: revealIn 0.9s cubic-bezier(0.2, 0.7, 0.2, 1) both;
}

/* ========== Stats strip ========== */
.stats {
  padding: var(--section-pad) 0;
  border-top: 1px solid var(--hairline);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  align-items: start;
}
.stat-cell .n {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(56px, 7vw, 112px);
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: var(--lime);
}
.stat-cell .n .small {
  color: var(--ink);
  font-size: 0.45em;
  margin-left: 0.1em;
}
.stat-cell .label {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.4;
  color: var(--ink-muted);
  border-top: 1px solid var(--hairline);
  padding-top: 14px;
  max-width: 220px;
}
@media (max-width: 900px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
}

/* ========== Quote (used on period page) ========== */
.pull-quote {
  margin: var(--row-pad) 0;
  padding: 60px 0;
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}
.pull-quote blockquote {
  margin: 0;
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(28px, 3.6vw, 56px);
  line-height: 1.15;
  letter-spacing: -0.01em;
  max-width: 1100px;
}
.pull-quote blockquote .lime { color: var(--lime); }
.pull-quote .attribution {
  margin-top: 28px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

/* ========== Ticker / бегущая строка ========== */
.ticker {
  overflow: hidden;
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  padding: 14px 0;
  background: var(--bg-elevated);
  white-space: nowrap;
  user-select: none;
}
.ticker-track {
  display: inline-flex;
  align-items: center;
  gap: 20px;
  animation: tickerScroll 40s linear infinite;
  will-change: transform;
}
.ticker:hover .ticker-track {
  animation-play-state: paused;
}
.ticker-track span {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-muted);
  white-space: nowrap;
}
.ticker-track .sep {
  color: var(--lime);
  font-size: 14px;
  letter-spacing: 0;
  opacity: 0.7;
}
@keyframes tickerScroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ========== Zoom на фото при наведении ========== */
.img-slot img {
  transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.img-slot:hover img {
  transform: scale(1.07);
}
.period[data-dimmed="true"] .img-slot:hover img {
  transform: none;
}