/* ═══════════════════════════════════════════════════
   ANIMA — Design System
   Deep black + amber fire. Code-native. Brutalist.
   ═══════════════════════════════════════════════════ */

:root {
  --bg: #060608;
  --bg-card: #0c0c10;
  --bg-code: #0a0a0e;
  --text: #c8c8d0;
  --text-dim: rgba(200,200,210,0.4);
  --text-bright: #f0f0f5;
  --amber: #ff6b00;
  --amber-dim: rgba(255,107,0,0.15);
  --amber-glow: rgba(255,107,0,0.08);
  --violet: #7c3aed;
  --violet-dim: rgba(124,58,237,0.12);
  --border: rgba(255,255,255,0.06);
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --font-body: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  --max-w: 1080px;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a { color: var(--amber); text-decoration: none; transition: opacity 0.2s; }
a:hover { opacity: 0.8; }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }

/* ═══════ HEADER ═══════ */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 16px 0;
  background: rgba(6,6,8,0.6);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: all 0.3s;
}
.site-header.scrolled { border-bottom-color: var(--border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; }
.logo-mark {
  font-family: var(--font-mono); font-size: 0.85rem; font-weight: 700;
  letter-spacing: 3px; color: var(--text-bright);
}
.logo-mark span { color: var(--amber); }
.nav-links { display: flex; gap: 28px; }
.nav-links a {
  font-family: var(--font-mono); font-size: 0.75rem;
  color: var(--text-dim); letter-spacing: 1px;
  text-transform: uppercase; transition: color 0.2s;
}
.nav-links a:hover { color: var(--text-bright); opacity: 1; }
.badge {
  font-family: var(--font-mono); font-size: 0.65rem;
  padding: 4px 10px; border: 1px solid var(--amber);
  color: var(--amber); letter-spacing: 1px; border-radius: 3px;
}

/* ═══════ HERO ═══════ */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  position: relative; padding: 120px 0 80px;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse 600px 400px at 20% 50%, rgba(255,107,0,0.04), transparent),
    radial-gradient(ellipse 500px 500px at 80% 30%, rgba(124,58,237,0.03), transparent);
}
.hero .container { position: relative; z-index: 1; }
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }

.hero h1 {
  font-family: var(--font-body); font-size: clamp(2.8rem, 5vw, 4.2rem);
  font-weight: 700; line-height: 1.1; color: var(--text-bright);
  letter-spacing: -1px; margin-bottom: 24px;
}
.hero h1 em {
  font-style: normal; color: var(--amber);
  text-decoration: underline; text-decoration-color: rgba(255,107,0,0.3);
  text-underline-offset: 6px;
}
.hero-sub {
  font-size: 1.05rem; color: var(--text); line-height: 1.8;
  max-width: 520px; margin-bottom: 32px;
}
.hero-sub strong { color: var(--text-bright); font-weight: 600; }
.hero-tag {
  font-family: var(--font-mono); font-size: 0.7rem;
  color: var(--amber); letter-spacing: 2px;
  text-transform: uppercase; margin-bottom: 16px; display: block;
}
.hero-status {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 0.75rem;
  color: var(--text-dim); margin-top: 8px;
}
.pulse {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--amber); animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(255,107,0,0.4); }
  50% { opacity: 0.6; box-shadow: 0 0 0 8px rgba(255,107,0,0); }
}

/* ═══════ LOOP VISUALIZATION ═══════ */
.loop-vis {
  position: relative; width: 340px; height: 340px; margin: 0 auto;
}
.loop-ring {
  position: absolute; border-radius: 50%;
  border: 1px solid var(--border);
  animation: ring-pulse 4s ease-in-out infinite;
}
.loop-ring:nth-child(1) { inset: 0; animation-delay: 0s; border-color: rgba(255,107,0,0.15); }
.loop-ring:nth-child(2) { inset: 25px; animation-delay: 0.3s; border-color: rgba(255,107,0,0.12); }
.loop-ring:nth-child(3) { inset: 50px; animation-delay: 0.6s; border-color: rgba(255,107,0,0.09); }
.loop-ring:nth-child(4) { inset: 75px; animation-delay: 0.9s; border-color: rgba(124,58,237,0.12); }
.loop-ring:nth-child(5) { inset: 100px; animation-delay: 1.2s; border-color: rgba(124,58,237,0.15); }
.loop-ring:nth-child(6) { inset: 120px; animation-delay: 1.5s; border-color: rgba(124,58,237,0.18); }
.loop-core {
  position: absolute; inset: 140px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255,107,0,0.2), transparent 70%);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: 0.7rem;
  color: var(--amber); letter-spacing: 2px;
  animation: core-breathe 3s ease-in-out infinite;
}
@keyframes ring-pulse {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.02); }
}
@keyframes core-breathe {
  0%, 100% { box-shadow: 0 0 30px rgba(255,107,0,0.1); }
  50% { box-shadow: 0 0 60px rgba(255,107,0,0.25); }
}
.loop-label {
  position: absolute; font-family: var(--font-mono); font-size: 0.6rem;
  color: var(--text-dim); letter-spacing: 1px;
}
.loop-label.top { top: -20px; left: 50%; transform: translateX(-50%); }
.loop-label.bot { bottom: -20px; left: 50%; transform: translateX(-50%); }

/* ═══════ SECTIONS ═══════ */
.section { padding: 100px 0; position: relative; }
.section-tag {
  font-family: var(--font-mono); font-size: 0.7rem;
  color: var(--amber); letter-spacing: 2px;
  text-transform: uppercase; margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem); font-weight: 700;
  color: var(--text-bright); line-height: 1.2; margin-bottom: 16px;
  letter-spacing: -0.5px;
}
.section-subtitle {
  font-size: 1rem; color: var(--text-dim); max-width: 600px;
  line-height: 1.8;
}

/* ═══════ ARCHITECTURE DIAGRAM ═══════ */
.arch-diagram {
  background: var(--bg-code); border: 1px solid var(--border);
  border-radius: 8px; padding: 32px; margin: 40px 0;
  font-family: var(--font-mono); font-size: 0.75rem;
  line-height: 1.8; color: var(--text-dim);
  overflow-x: auto; white-space: pre;
}
.arch-diagram .hl { color: var(--amber); }
.arch-diagram .vl { color: var(--violet); }
.arch-diagram .br { color: var(--text-bright); }

/* ═══════ CARDS ═══════ */
.card-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px; margin-top: 40px;
}
.card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 8px; padding: 28px;
  transition: border-color 0.3s, transform 0.3s;
}
.card:hover { border-color: rgba(255,107,0,0.2); transform: translateY(-2px); }
.card h3 {
  font-family: var(--font-mono); font-size: 0.9rem;
  color: var(--text-bright); margin-bottom: 12px; font-weight: 600;
}
.card p { font-size: 0.88rem; color: var(--text-dim); line-height: 1.7; }
.card-num {
  font-family: var(--font-mono); font-size: 0.65rem;
  color: var(--amber); letter-spacing: 2px; margin-bottom: 12px;
  display: block;
}

/* ═══════ COMPARISON TABLE ═══════ */
.comp-table {
  width: 100%; border-collapse: collapse; margin: 40px 0;
  font-family: var(--font-mono); font-size: 0.8rem;
}
.comp-table th, .comp-table td {
  padding: 14px 20px; text-align: left;
  border-bottom: 1px solid var(--border);
}
.comp-table th {
  color: var(--text-dim); font-weight: 400;
  font-size: 0.7rem; letter-spacing: 1px; text-transform: uppercase;
}
.comp-table td { color: var(--text); }
.comp-table td.bright { color: var(--amber); font-weight: 600; }
.comp-table tr:hover td { background: var(--amber-glow); }

/* ═══════ CODE BLOCK ═══════ */
.code-block {
  background: var(--bg-code); border: 1px solid var(--border);
  border-radius: 8px; padding: 24px; margin: 24px 0;
  font-family: var(--font-mono); font-size: 0.78rem;
  line-height: 1.7; color: var(--text-dim); overflow-x: auto;
}
.code-block .comment { color: rgba(200,200,210,0.25); }
.code-block .kw { color: var(--violet); }
.code-block .fn { color: var(--amber); }
.code-block .str { color: #4ade80; }

/* ═══════ WHITEPAPER PROSE ═══════ */
.prose { max-width: 720px; }
.prose h2 {
  font-size: 1.6rem; color: var(--text-bright); font-weight: 700;
  margin: 60px 0 16px; letter-spacing: -0.5px;
}
.prose h3 {
  font-family: var(--font-mono); font-size: 0.85rem;
  color: var(--amber); margin: 36px 0 12px;
  letter-spacing: 1px; text-transform: uppercase;
}
.prose p { margin-bottom: 20px; font-size: 0.95rem; }
.prose strong { color: var(--text-bright); font-weight: 600; }
.prose em { color: var(--amber); font-style: normal; }

.prose ul { list-style: none; padding: 0; margin: 16px 0; }
.prose li {
  padding: 6px 0 6px 20px; position: relative;
  font-size: 0.9rem; color: var(--text);
}
.prose li::before {
  content: '—'; position: absolute; left: 0;
  color: var(--amber); font-weight: 700;
}

/* ═══════ STATUS BAR ═══════ */
.status-section {
  background: var(--bg-card); border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 60px 0;
}
.status-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px;
}
.status-item { text-align: center; }
.status-val {
  font-family: var(--font-mono); font-size: 1.8rem;
  font-weight: 700; color: var(--amber);
}
.status-label {
  font-family: var(--font-mono); font-size: 0.65rem;
  color: var(--text-dim); letter-spacing: 1px;
  text-transform: uppercase; margin-top: 6px;
}

/* ═══════ MANIFESTO ═══════ */
.manifesto {
  padding: 80px 0; text-align: center;
  border-top: 1px solid var(--border);
}
.manifesto .dim {
  font-size: 1.3rem; color: var(--text-dim);
  font-style: italic; margin-bottom: 8px;
}
.manifesto .bright {
  font-size: 2rem; color: var(--text-bright);
  font-weight: 700; letter-spacing: -0.5px;
}
.manifesto .bright em { color: var(--amber); font-style: normal; }

/* ═══════ FOOTER ═══════ */
.site-footer {
  padding: 32px 0; border-top: 1px solid var(--border);
  font-family: var(--font-mono); font-size: 0.7rem;
  color: var(--text-dim); text-align: center;
  letter-spacing: 1px;
}

/* ═══════ ANIMATIONS ═══════ */
.anim {
  opacity: 0; transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.anim.visible { opacity: 1; transform: translateY(0); }

/* ═══════ RESPONSIVE ═══════ */
@media (max-width: 768px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .loop-vis { width: 260px; height: 260px; }
  .loop-core { inset: 105px; }
  .loop-ring:nth-child(4) { inset: 55px; }
  .loop-ring:nth-child(5) { inset: 75px; }
  .loop-ring:nth-child(6) { inset: 90px; }
  .card-grid { grid-template-columns: 1fr; }
  .status-grid { grid-template-columns: repeat(2, 1fr); }
  .nav-links { display: none; }
  .comp-table { font-size: 0.7rem; }
  .comp-table th, .comp-table td { padding: 10px 12px; }
}