/* ============================================================
   Hacker Sprint — общий стиль для visual/
   Подогнан под визуальный язык podlodka-ai-engineers:
   Fira Code монопространство, плоский дизайн без скруглений,
   тонкие 1px-хейрлайн-бордеры, оранжевый акцент #FF991C.
   Унаследованы класс-базируемые темы (theme-dark / theme-light)
   из исходной разметки visualize-skeleton.
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root { interpolate-size: allow-keywords; }

/* ===== THEMES — Podlodka ===== */
html.theme-dark {
  --bg: #0e0e0e;
  --surface: #161616;
  --surface-hover: #1d1d1d;
  --surface-elevated: #181818;
  --border: rgba(255,255,255,0.12);
  --border-strong: rgba(255,255,255,0.22);
  --rule: #2a2a2a;
  --text: #e0e0e0;
  --text-secondary: #bbb;
  --text-muted: #aaa;
  --text-faint: #777;
  --accent: #FF991C;
  --accent-secondary: #FF991C;
  --accent-glow: rgba(255,153,28,0.14);
  --positive: #10b981;
  --negative: #f43f5e;
  --warning: #f59e0b;
  --grid-line: rgba(255,255,255,0.04);
  --nav-bg: rgba(14,14,14,0.92);
  --nav-border: rgba(255,255,255,0.08);
  --hero-grad: none;
  --tier-glow: 0 0 0 1px var(--accent);
  --pipeline-glow: 0 0 0 1px var(--accent);
  --rail: rgba(255,255,255,0.06);
}
html.theme-light {
  --bg: #ffffff;
  --surface: #ffffff;
  --surface-hover: #fafafa;
  --surface-elevated: #fafafa;
  --border: rgba(0,0,0,0.10);
  --border-strong: rgba(0,0,0,0.20);
  --rule: #ddd;
  --text: #111;
  --text-secondary: #444;
  --text-muted: #555;
  --text-faint: #888;
  --accent: #FF991C;
  --accent-secondary: #FF991C;
  --accent-glow: rgba(255,153,28,0.10);
  --positive: #059669;
  --negative: #e11d48;
  --warning: #b45309;
  --grid-line: rgba(0,0,0,0.04);
  --nav-bg: rgba(255,255,255,0.92);
  --nav-border: rgba(0,0,0,0.06);
  --hero-grad: none;
  --tier-glow: 0 0 0 1px var(--accent);
  --pipeline-glow: 0 0 0 1px var(--accent);
  --rail: rgba(0,0,0,0.06);
}

/* ===== BASE ===== */
html { scroll-behavior: smooth; }
body {
  font-family: 'Fira Code', 'SF Mono', 'JetBrains Mono', ui-monospace, monospace;
  background: var(--bg); color: var(--text);
  font-size: 17px; line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: 'liga' 1, 'calt' 1;
  transition: background 0.3s, color 0.3s;
  scrollbar-gutter: stable;
  min-height: 100vh;
  position: relative;
}

/* Подложечные «технологические рейки» по краям — фирменная фишка podlodka-ai-engineers */
body::before {
  content: '';
  position: fixed; inset: 0;
  background-image:
    linear-gradient(90deg, transparent 0, transparent 21px, var(--rail) 21px, var(--rail) 22px),
    linear-gradient(90deg, transparent 0, transparent 21px, var(--rail) 21px, var(--rail) 22px);
  background-position: 0 0, 100% 0;
  background-size: 22px 100%, 22px 100%;
  background-repeat: no-repeat;
  pointer-events: none;
  z-index: 0;
}

.mono, code, pre { font-family: 'Fira Code', 'SF Mono', 'JetBrains Mono', ui-monospace, monospace; }

h1, h2, h3, h4, h5, h6 {
  color: var(--text);
  letter-spacing: -0.02em;
  line-height: 1.15;
  text-wrap: balance;
  font-family: inherit;
}
h1 { font-weight: 700; font-size: clamp(32px, 5vw, 56px); letter-spacing: -0.03em; line-height: 1.1; }
h2 { font-weight: 700; font-size: 28px; letter-spacing: -0.02em; line-height: 1.3; }
h3 { font-weight: 600; font-size: 22px; letter-spacing: -0.02em; line-height: 1.3; }
h4 { font-weight: 600; font-size: 17px; }
body, p, li, td, th, span, label { font-weight: 400; }
p, li, td, th, span, label { color: var(--text); }
.text-secondary { color: var(--text-secondary); }

/* ===== LAYOUT ===== */
.container { max-width: 1080px; margin: 0 auto; padding: 0 32px; position: relative; z-index: 1; }
section { padding: 64px 0; }

/* ===== NAV — mirrors the main site navigation ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--nav-border);
}

.nav-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 32px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 32px;
}

.nav-link {
  font-size: 14px;
  letter-spacing: 0.01em;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

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

.nav-link--cta {
  display: inline-block;
  padding: 4px 12px;
  background: var(--text);
  color: var(--bg);
  font-weight: 400;
  font-size: 14px;
}

.nav-link--cta:hover {
  color: var(--bg);
}

.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-family: "Fira Code", monospace;
  font-size: 19px;
  line-height: 1;
  padding: 4px 8px;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  margin-right: -24px;
}

.theme-toggle:hover {
  color: var(--text);
  border-color: var(--text-secondary);
}

/* Каждая секция получает горизонтальную хейрлайн-черту сверху на 100vw — как на podlodka-ai-engineers */
section { position: relative; }
section::before {
  content: '';
  position: absolute; left: 50%; top: 0;
  transform: translateX(-50%);
  width: 100vw; height: 1px;
  background: var(--rule);
  z-index: 0;
}
section.hero::before { display: none; }

/* «Подзаголовок над заголовком» — отдельной строкой над h2 */
.section-eyebrow {
  display: block;
  font-size: 13px; font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--accent);
  padding: 0;
  background: transparent;
  margin-bottom: 12px;
}
.section-eyebrow::before { display: none; }

.section-title {
  margin-bottom: 16px;
  display: inline-block;
  padding-bottom: 10px;
  border-bottom: 3px solid var(--accent);
}
.section-subtitle { color: var(--text-secondary); font-size: 17px; max-width: 720px; margin-bottom: 40px; line-height: 1.6; }

/* ===== HERO ===== */
.hero {
  position: relative;
  padding: 80px 0 64px;
  background: var(--bg);
  overflow: hidden;
}
.hero::before { display: none; }
.hero-content { position: relative; z-index: 1; }
.hero-back {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--text-secondary);
  font-size: 14px; text-decoration: none;
  margin-bottom: 24px;
  transition: color 0.2s;
  letter-spacing: 0.01em;
}
.hero-back:hover { color: var(--accent); }

.hero-badge {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 4px 12px;
  background: transparent;
  border: 1px solid var(--border);
  font-size: 13px; color: var(--text-secondary); margin-bottom: 24px;
  border-radius: 0;
}
.hero-badge .dot { width: 6px; height: 6px; background: var(--accent); animation: pulse 2.4s infinite; }

@keyframes pulse { 0%,100% { opacity:1; } 50% { opacity:0.4; } }

.hero h1 { margin-bottom: 20px; letter-spacing: -0.03em; line-height: 1.1; }
.hero h1:has(+ .hero-repo) { margin-bottom: 14px; }
.hero-repo {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
  margin-bottom: 24px;
  padding: 4px 10px;
  border: 1px solid var(--border);
  background: transparent;
  transition: color 0.2s, border-color 0.2s;
  word-break: break-all;
  border-radius: 0;
}
.hero-repo:hover { color: var(--accent); border-color: var(--accent); }
.hero-repo svg { flex-shrink: 0; opacity: 0.7; }
.hero-repo:hover svg { opacity: 1; }
.hero-subtitle {
  font-size: clamp(17px, 2.2vw, 22px);
  color: var(--text-secondary); max-width: 720px; margin-bottom: 32px;
  line-height: 1.5;
  font-weight: 400;
}
.hero-subtitle:has(+ .hero-stack) { margin-bottom: 24px; }

.hero-stack {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  max-width: 720px;
  margin-bottom: 32px;
}
.stack-pill {
  font-size: 12px;
  padding: 2px 8px;
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  white-space: nowrap;
  border-radius: 0;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 40px;
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
}
.stat-card {
  background: transparent;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  border-radius: 0 !important;
  padding: 24px;
  transition: background 0.25s;
  position: relative;
  overflow: hidden;
  box-shadow: none !important;
}
.stat-card::before { display: none !important; }
.stat-card:hover { background: var(--surface-hover); transform: none !important; }
.stat-value {
  font-size: 36px; font-weight: 700; line-height: 1;
  color: var(--text); margin-bottom: 8px;
  letter-spacing: -0.03em;
  font-feature-settings: 'tnum';
}
.stat-value.accent { color: var(--accent); }
.stat-label {
  font-size: 13px; color: var(--text-secondary);
  text-transform: uppercase; letter-spacing: 0.08em; font-weight: 500;
}
.stat-sublabel { font-size: 13px; color: var(--text-secondary); margin-top: 4px; }

/* ===== KEY IDEA CALLOUT ===== */
.key-idea {
  background: transparent;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 0 !important;
  padding: 28px 32px;
  position: relative;
  overflow: hidden;
  box-shadow: none !important;
}
.key-idea::before { display: none !important; }
.key-idea h3 { font-size: 22px; margin-bottom: 12px; }
.key-idea p { color: var(--text-secondary); font-size: 17px; line-height: 1.6; }
.key-idea strong { color: var(--text); font-weight: 600; }

/* ===== ARCH FLOW ===== */
.arch-flow {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
}
.arch-diagram {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 0 !important;
  padding: 24px;
  position: relative;
  box-shadow: none !important;
}
.arch-node {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 16px;
  background: var(--surface-elevated);
  border: 1px solid var(--border);
  border-radius: 0 !important;
  margin-bottom: 8px;
  transition: all 0.2s;
  box-shadow: none !important;
}
.arch-node.active {
  border-color: var(--accent);
  box-shadow: var(--tier-glow) !important;
}
.arch-node:hover { transform: none !important; background: var(--surface-hover); }
.arch-icon {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  background: transparent;
  border: 1px solid var(--accent);
  border-radius: 0 !important;
  color: var(--accent);
  flex-shrink: 0;
}
.arch-arrow {
  text-align: center; color: var(--text-secondary);
  font-size: 12px; padding: 4px 0;
  letter-spacing: 0.1em; text-transform: uppercase;
}
.arch-node-title { font-weight: 600; font-size: 14px; }
.arch-node-meta { font-size: 13px; color: var(--text-secondary); margin-top: 2px; }

/* ===== COMPONENTS GRID ===== */
.components-filter {
  display: flex; gap: 8px; margin-bottom: 32px; flex-wrap: wrap;
}
.filter-btn {
  padding: 6px 14px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 0 !important;
  color: var(--text-secondary);
  font-size: 13px; font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
  letter-spacing: 0.01em;
}
.filter-btn:hover { border-color: var(--accent); color: var(--text); }
.filter-btn.active {
  background: var(--accent); color: #111; border-color: var(--accent);
}

.components-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}
.component-card {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 0 !important;
  padding: 24px;
  transition: all 0.25s ease;
  display: flex; flex-direction: column;
  position: relative;
  overflow: hidden;
  box-shadow: none !important;
}
.component-card.hidden { display: none; }
.component-card:hover {
  transform: none !important;
  border-color: var(--border-strong);
  background: var(--surface-hover);
}
.component-card::before {
  content: ''; position: absolute; top: 0; left: 0; bottom: 0; width: 3px;
  background: var(--cat-color, var(--accent));
  height: auto !important;
  right: auto !important;
}
.component-header {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: 12px; margin-bottom: 12px;
}
.component-num {
  font-size: 12px; font-weight: 700;
  color: var(--cat-color, var(--accent));
  padding: 0;
  background: transparent;
  letter-spacing: 0.08em;
  border-radius: 0 !important;
}
.component-cat {
  font-size: 11px; padding: 2px 8px;
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  letter-spacing: 0.08em; text-transform: uppercase; font-weight: 600;
  border-radius: 0 !important;
}
.component-card h4 { margin-bottom: 6px; font-size: 15px; }
.component-tagline { font-size: 13px; color: var(--accent); font-weight: 500; margin-bottom: 10px; font-style: normal; }
.component-desc { color: var(--text-secondary); font-size: 14px; line-height: 1.6; }
.component-desc strong { color: var(--text); font-weight: 600; }

/* ===== TIMELINE ===== */
.timeline {
  position: relative;
  padding-left: 36px;
}
.timeline::before {
  content: ''; position: absolute; left: 12px; top: 8px; bottom: 8px;
  width: 1px;
  background: var(--border-strong);
}
.timeline-item {
  position: relative;
  margin-bottom: 16px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 0 !important;
  padding: 18px 22px;
  transition: all 0.2s;
  box-shadow: none !important;
}
.timeline-item:hover { border-color: var(--accent); transform: none !important; background: var(--surface-hover); }
.timeline-item::before {
  content: ''; position: absolute;
  left: -28px; top: 22px;
  width: 9px; height: 9px;
  border-radius: 0 !important;
  background: var(--accent);
  border: none;
  box-shadow: 0 0 0 3px var(--bg);
}
.timeline-step {
  font-size: 11px; font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.12em;
  margin-bottom: 6px;
  text-transform: uppercase;
}
.timeline-title { font-weight: 600; color: var(--text); margin-bottom: 6px; font-size: 15px; }
.timeline-desc { color: var(--text-secondary); font-size: 14px; line-height: 1.6; }
.timeline-desc code {
  font-size: 0.9em;
  background: var(--surface-elevated); padding: 1px 6px;
  border-radius: 0 !important; color: var(--accent);
  border: 1px solid var(--border);
}

/* ===== KEY PROPERTIES ===== */
.properties-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 0;
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
}
.property {
  display: flex; gap: 14px;
  padding: 20px;
  background: transparent;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  border-radius: 0 !important;
  transition: background 0.2s;
  box-shadow: none !important;
}
.property:hover { background: var(--surface-hover); }
.property-icon {
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  background: transparent;
  border: 1px solid var(--accent);
  border-radius: 0 !important;
  color: var(--accent);
  flex-shrink: 0;
}
.property h4 { font-size: 14px; margin-bottom: 4px; }
.property p { color: var(--text-secondary); font-size: 13px; line-height: 1.55; }

/* ===== CHARTS ===== */
.chart-card {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 0 !important;
  padding: 28px;
  box-shadow: none !important;
}
.chart-card h4 { margin-bottom: 8px; font-size: 17px; }
.chart-card .chart-desc { color: var(--text-secondary); font-size: 14px; margin-bottom: 24px; }
.chart-container { height: 320px; position: relative; }

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.animate { animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) both; }
.animate.delay-1 { animation-delay: 0.06s; }
.animate.delay-2 { animation-delay: 0.12s; }
.animate.delay-3 { animation-delay: 0.18s; }
.animate.delay-4 { animation-delay: 0.24s; }
.animate.delay-5 { animation-delay: 0.30s; }
.animate.delay-6 { animation-delay: 0.36s; }

.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ===== FOOTER ===== */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--text-secondary);
  font-size: 13px;
}
.footer a { color: var(--accent); text-decoration: none; }
.footer a:hover { text-decoration: underline; }

/* ===== MENU ===== */
.viz-menu { position: fixed; top: 16px; right: 16px; z-index: 9999; }
.viz-menu-toggle {
  width: 36px; height: 36px;
  border-radius: 0 !important;
  background: var(--bg);
  border: 1px solid var(--border-strong);
  color: var(--text); cursor: pointer; display: flex;
  align-items: center; justify-content: center;
  transition: all 0.2s;
  font-family: inherit;
}
.viz-menu-toggle:hover { border-color: var(--accent); color: var(--accent); }
.viz-menu-dropdown {
  position: absolute; top: 44px; right: 0; min-width: 200px;
  background: var(--bg); border: 1px solid var(--border-strong);
  border-radius: 0 !important; padding: 4px;
  opacity: 0; visibility: hidden; transform: translateY(-4px);
  transition: all 0.2s;
  box-shadow: none;
}
.viz-menu-dropdown.open { opacity: 1; visibility: visible; transform: translateY(0); }
.viz-menu-dropdown button {
  width: 100%; padding: 8px 12px; border: none;
  border-radius: 0 !important;
  background: transparent; color: var(--text); font-size: 13px;
  font-family: inherit; cursor: pointer; text-align: left;
  display: flex; align-items: center; gap: 10px; transition: background 0.15s;
}
.viz-menu-dropdown button:hover { background: var(--surface-hover); color: var(--accent); }

/* ===== SKIP LINK ===== */
.skip-to-content {
  position: absolute; top: -40px; left: 6px; background: var(--accent);
  color: #111; padding: 6px 12px; text-decoration: none;
  border-radius: 0; opacity: 0; pointer-events: none;
  transition: all 0.2s; z-index: 10000;
}
.skip-to-content:focus { top: 6px; opacity: 1; pointer-events: auto; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .arch-flow { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav-inner {
    padding: 8px 20px;
    height: auto;
    gap: 12px 20px;
    flex-wrap: wrap;
    justify-content: center;
  }
  .container { padding: 0 20px; }
  section { padding: 48px 0; }
  .hero { padding: 56px 0 40px; }
  .components-grid { grid-template-columns: 1fr; }
  .properties-grid { grid-template-columns: 1fr; }
  .timeline { padding-left: 28px; }
  .timeline::before { left: 10px; }
  .timeline-item::before { left: -23px; }
}
@media (max-width: 375px) {
  body { overflow-x: hidden; }
  .container { padding: 0 16px; }
  .hero-stats { grid-template-columns: 1fr; }
  .stat-value { font-size: 28px; }
  .key-idea { padding: 20px; }
}

/* ===== PRINT ===== */
@media print {
  body::before { display: none; }
  body { background: white !important; color: black !important; }
  .viz-menu { display: none; }
  .reveal { opacity: 1 !important; transform: none !important; }
  .card, .component-card, .stat-card, .timeline-item, .property, .chart-card {
    break-inside: avoid; border: 1px solid #ddd; box-shadow: none;
  }
  * { print-color-adjust: exact; -webkit-print-color-adjust: exact; }
}
@page { margin: 0.7in; @bottom-center { content: "Стр. " counter(page); font-size: 9pt; color: #666; } }

/* ============================================================
   GLOBAL OVERRIDES — давим inline-стили в страницах проектов:
   плоские углы, без теней, без translateY на hover.
   Категорийные акценты на pipeline-stage/backend-card/tier-card
   и т.п. остаются — они задают только цвет, не форму.
   ============================================================ */
[class*="-card"],
[class*="-stage"],
[class*="-block"],
[class*="-cell"],
[class*="-item"],
[class*="-node"],
[class*="-pill"],
[class*="-chip"],
[class*="-badge"],
[class*="-tile"] {
  border-radius: 0 !important;
}
[class*="-card"]:hover,
[class*="-stage"]:hover,
[class*="-block"]:hover,
[class*="-tile"]:hover,
[class*="-item"]:hover,
[class*="-node"]:hover {
  transform: none !important;
  box-shadow: none !important;
}

/* Шрифт по умолчанию — моноширинный Fira Code */
input, button, textarea, select { font-family: inherit; }