/* === FONTS === */
:root {
  --bg: #0a0a0a;
  --bg-alt: #0f0f0f;
  --bg-card: #111111;
  --fg: #e8e8e8;
  --fg-dim: #666666;
  --amber: #e67e22;
  --amber-dim: #7a4411;
  --green: #00ff88;
  --green-dim: rgba(0,255,136,0.15);
  --red: #ff4444;
  --border: #1e1e1e;
  --font-head: 'Bebas Neue', sans-serif;
  --font-body: 'Space Grotesk', sans-serif;
  --font-mono: 'Fira Code', monospace;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--amber-dim); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--amber); }

::selection { background: var(--amber); color: #000; }

/* === NAV === */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border);
  background: rgba(10,10,10,0.85);
  backdrop-filter: blur(12px);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.05em;
}
.brand-glyph {
  color: var(--amber);
  font-size: 18px;
}
.brand-slash {
  color: var(--green);
  font-size: 18px;
  margin-right: 2px;
}
.brand-name { color: var(--fg); }
.brand-accent { color: var(--amber); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}
.nav-link {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--fg-dim);
  text-decoration: none;
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 3px;
  transition: all 0.2s ease;
}
.nav-link:hover {
  color: var(--amber);
  border-color: var(--amber-dim);
  background: rgba(230,126,34,0.06);
}
.nav-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-dim);
  letter-spacing: 0.1em;
}
.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 6px var(--green);
  animation: pulse-dot 2s ease-in-out infinite;
}
.status-dot.green { background: var(--green); box-shadow: 0 0 6px var(--green); }
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* === HERO === */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  padding: 100px 32px 80px;
  overflow: hidden;
}
.hero-grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(230,126,34,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(230,126,34,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}
.hero-grid-overlay::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 60% 40%, transparent 0%, var(--bg) 70%);
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--amber);
  letter-spacing: 0.15em;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.label-bracket { color: var(--fg-dim); }

.hero-headline {
  font-family: var(--font-head);
  font-size: clamp(56px, 7vw, 96px);
  line-height: 0.95;
  color: var(--fg);
  letter-spacing: 0.02em;
  margin-bottom: 24px;
}
.headline-accent {
  color: var(--amber);
  display: block;
}
.hero-sub {
  font-size: 16px;
  color: var(--fg-dim);
  max-width: 480px;
  margin-bottom: 40px;
  line-height: 1.7;
}

/* Terminal block */
.hero-terminal {
  background: #080808;
  border: 1px solid var(--border);
  border-left: 3px solid var(--amber);
  border-radius: 4px;
  overflow: hidden;
  max-width: 500px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.6), 0 0 1px rgba(230,126,34,0.3);
}
.term-header {
  background: #0d0d0d;
  padding: 10px 14px;
  display: flex;
  align-items: center;
  gap: 6px;
  border-bottom: 1px solid var(--border);
}
.term-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}
.term-dot.red { background: #ff5f57; }
.term-dot.amber { background: #febc2e; }
.term-dot.green { background: #28c840; }
.term-title {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-dim);
  margin-left: 8px;
}
.term-body {
  padding: 16px 18px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.8;
}
.term-line { display: flex; align-items: center; gap: 8px; }
.term-prompt { color: var(--amber); font-weight: 600; }
.term-cmd { color: var(--fg); }
.term-output { color: var(--fg-dim); }
.term-output.ok { color: var(--green); }
.term-comment { color: var(--fg-dim); font-style: italic; }
.term-cursor-line { display: flex; align-items: center; margin-top: 4px; }
.cursor-blink {
  color: var(--green);
  animation: blink 1s step-end infinite;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* HUD frame */
.hero-right { display: flex; justify-content: center; align-items: center; }
.hud-frame {
  position: relative;
  width: 320px;
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hud-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid;
}
.hud-ring-outer {
  width: 320px;
  height: 320px;
  border-color: rgba(230,126,34,0.25);
  box-shadow: 0 0 40px rgba(230,126,34,0.05);
  animation: rotate-slow 20s linear infinite;
}
.hud-ring-outer::before {
  content: '';
  position: absolute;
  top: -4px;
  left: 50%;
  width: 6px;
  height: 6px;
  background: var(--amber);
  border-radius: 50%;
  transform: translateX(-50%);
  box-shadow: 0 0 8px var(--amber);
}
.hud-ring-mid {
  width: 240px;
  height: 240px;
  border-color: rgba(0,255,136,0.15);
  animation: rotate-slow 12s linear infinite reverse;
}
.hud-ring-mid::before {
  content: '';
  position: absolute;
  top: -4px;
  left: 50%;
  width: 4px;
  height: 4px;
  background: var(--green);
  border-radius: 50%;
  transform: translateX(-50%);
}
@keyframes rotate-slow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.hud-center {
  text-align: center;
  z-index: 1;
}
.hud-core-glyph {
  font-family: var(--font-head);
  font-size: 48px;
  color: var(--amber);
  letter-spacing: 0.05em;
  text-shadow: 0 0 20px rgba(230,126,34,0.4);
}
.hud-core-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--fg-dim);
  letter-spacing: 0.3em;
  margin-top: 2px;
}

.hud-data {
  position: absolute;
  display: flex;
  flex-direction: column;
  text-align: center;
}
.hud-top { top: 12px; left: 50%; transform: translateX(-50%); }
.hud-right { top: 50%; right: 8px; transform: translateY(-50%); }
.hud-bottom { bottom: 12px; left: 50%; transform: translateX(-50%); }
.hud-left { top: 50%; left: 8px; transform: translateY(-50%); }

.hud-label {
  font-family: var(--font-mono);
  font-size: 8px;
  color: var(--fg-dim);
  letter-spacing: 0.2em;
  margin-bottom: 2px;
}
.hud-value {
  font-family: var(--font-head);
  font-size: 22px;
  color: var(--fg);
  letter-spacing: 0.05em;
}
.hud-value.ok { color: var(--green); font-size: 12px; font-family: var(--font-mono); letter-spacing: 0.1em; }
.hud-unit {
  font-family: var(--font-mono);
  font-size: 8px;
  color: var(--fg-dim);
  letter-spacing: 0.2em;
}

/* Scroll indicator */
.hero-scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  z-index: 1;
}
.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--amber), transparent);
  animation: scroll-pulse 2s ease-in-out infinite;
}
@keyframes scroll-pulse {
  0%, 100% { opacity: 0.4; height: 40px; }
  50% { opacity: 1; height: 50px; }
}
.scroll-text {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--fg-dim);
  letter-spacing: 0.3em;
}

/* === STATS BAR === */
.stats-bar {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 48px 32px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0;
}
.stat-item {
  text-align: center;
  padding: 0 48px;
}
.stat-number {
  font-family: var(--font-head);
  font-size: 56px;
  color: var(--amber);
  line-height: 1;
  display: block;
}
.stat-plus {
  font-size: 36px;
  vertical-align: super;
}
.stat-unit {
  font-size: 36px;
}
.stat-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--fg-dim);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-top: 8px;
  display: block;
  line-height: 1.5;
}
.stat-divider {
  width: 1px;
  height: 60px;
  background: var(--border);
}

/* === ARCHITECTURE === */
.architecture {
  padding: 120px 32px;
  max-width: 1200px;
  margin: 0 auto;
}
.section-header {
  margin-bottom: 80px;
}
.section-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--amber);
  letter-spacing: 0.15em;
  display: block;
  margin-bottom: 20px;
}
.section-title {
  font-family: var(--font-head);
  font-size: clamp(48px, 5vw, 72px);
  line-height: 0.95;
  color: var(--fg);
  letter-spacing: 0.02em;
  margin-bottom: 24px;
}
.section-desc {
  font-size: 16px;
  color: var(--fg-dim);
  max-width: 520px;
  line-height: 1.7;
}

.arch-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
}
.arch-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 40px;
  position: relative;
  transition: border-color 0.3s ease;
}
.arch-card:hover {
  border-color: var(--amber-dim);
}
.arch-card-featured {
  border-color: var(--amber-dim);
  background: linear-gradient(135deg, #111 0%, #13100a 100%);
}
.arch-card-badge {
  position: absolute;
  top: 0;
  right: 0;
  background: var(--amber);
  color: #000;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.1em;
  padding: 4px 10px;
}
.arch-card-icon {
  margin-bottom: 24px;
}
.arch-card-title {
  font-family: var(--font-head);
  font-size: 28px;
  color: var(--fg);
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}
.arch-card-body {
  font-size: 14px;
  color: var(--fg-dim);
  line-height: 1.7;
  margin-bottom: 20px;
}
.arch-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.arch-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--fg-dim);
  border: 1px solid var(--border);
  padding: 3px 8px;
  border-radius: 2px;
  letter-spacing: 0.05em;
}
.arch-card-meta {
  display: flex;
  gap: 8px;
}
.arch-meta-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--amber);
  border: 1px solid var(--amber-dim);
  padding: 3px 8px;
  border-radius: 2px;
}

/* === PRINCIPLES === */
.principles {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 100px 32px;
}
.principles-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 80px;
  align-items: start;
}
.principles-label { padding-top: 8px; }
.principles-list { display: flex; flex-direction: column; gap: 0; }
.principle-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 32px;
  padding: 36px 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
}
.principle-item:last-child { border-bottom: none; }
.principle-marker {
  font-family: var(--font-head);
  font-size: 40px;
  color: var(--amber);
  line-height: 1;
  letter-spacing: 0.05em;
}
.principle-title {
  font-family: var(--font-head);
  font-size: 28px;
  color: var(--fg);
  letter-spacing: 0.05em;
  margin-bottom: 10px;
}
.principle-body {
  font-size: 14px;
  color: var(--fg-dim);
  line-height: 1.7;
}

/* === CLOSING === */
.closing {
  padding: 120px 32px;
  max-width: 1200px;
  margin: 0 auto;
}
.closing-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.closing-terminal { max-width: 500px; }
.term-header.closing-header { background: #0d0d0d; padding: 10px 14px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 6px; }
.term-output.large {
  font-size: 15px;
  color: var(--amber);
  font-weight: 500;
}

.closing-headline {
  font-family: var(--font-head);
  font-size: clamp(40px, 4vw, 56px);
  color: var(--fg);
  letter-spacing: 0.03em;
  margin-bottom: 16px;
}
.closing-sub {
  font-size: 16px;
  color: var(--fg-dim);
  margin-bottom: 36px;
  line-height: 1.7;
}
.closing-links {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.closing-link {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--fg);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 14px;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 4px;
  transition: all 0.2s ease;
}
.closing-link:hover {
  border-color: var(--amber);
  color: var(--amber);
  background: rgba(230,126,34,0.05);
}
.closing-link svg { color: var(--amber); flex-shrink: 0; }

/* === FOOTER === */
.footer {
  border-top: 1px solid var(--border);
  padding: 28px 32px;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--fg-dim);
}
.footer-status {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-dim);
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 0.1em;
}

/* === RESPONSIVE === */
@media (max-width: 900px) {
  .hero-content { grid-template-columns: 1fr; gap: 48px; }
  .hero-right { display: none; }
  .hero-headline { font-size: 56px; }
  .arch-grid { grid-template-columns: 1fr; }
  .stats-bar { flex-wrap: wrap; gap: 32px; justify-content: center; }
  .stat-item { padding: 0 24px; }
  .stat-number { font-size: 40px; }
  .principles-inner { grid-template-columns: 1fr; gap: 32px; }
  .closing-inner { grid-template-columns: 1fr; }
  .closing-terminal { display: none; }
}
@media (max-width: 600px) {
  .hero { padding: 80px 20px 60px; }
  .stats-bar { padding: 32px 20px; }
  .architecture { padding: 80px 20px; }
  .principles { padding: 60px 20px; }
  .closing { padding: 80px 20px; }
  .arch-card { padding: 28px; }
  .principle-item { grid-template-columns: 50px 1fr; gap: 16px; }
  .principle-marker { font-size: 28px; }
  .principle-title { font-size: 22px; }
  .stat-divider { display: none; }
  .stat-item { border-bottom: 1px solid var(--border); width: 100%; text-align: left; padding: 16px 0; }
  .stat-item:last-child { border-bottom: none; }
  .stat-number { font-size: 48px; }
}