/* ═══════════════════════════════════════════════════
   MythosForge — GitHub Pages Stylesheet
   Z.AI Research Lab — April 2026
   ═══════════════════════════════════════════════════ */

/* ─── Reset & Base ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --deep: #0A1628;
  --navy: #0F1D32;
  --surface: #162240;
  --cyan: #00D4FF;
  --gold: #FFB800;
  --green: #00E87B;
  --red: #FF4D6A;
  --purple: #A78BFA;
  --pink: #FF6B9D;
  --text: #E8EDF5;
  --text-dim: #7B8BA5;
  --border: rgba(0, 212, 255, 0.12);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: 'JetBrains Mono', 'Fira Code', ui-monospace, monospace;
  --max-w: 1100px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--deep);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  background-image:
    linear-gradient(rgba(0,212,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
code { font-family: var(--mono); }

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--deep); }
::-webkit-scrollbar-thumb { background: rgba(0,212,255,0.25); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(0,212,255,0.4); }
::selection { background: rgba(0,212,255,0.3); color: #fff; }

/* ─── Typography ─── */
.text-cyan { color: var(--cyan); }
.text-gold { color: var(--gold); }
.text-gradient-cyan {
  background: linear-gradient(135deg, #00D4FF 0%, #00E87B 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.text-gradient-gold {
  background: linear-gradient(135deg, #FFB800 0%, #FF8C00 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ─── Utilities ─── */
.section { padding: 80px 24px; }
.section-alt { background: rgba(22,34,64,0.3); }
.section-inner { max-width: var(--max-w); margin: 0 auto; }
.section-header { text-align: center; margin-bottom: 48px; }
.section-badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(0,212,255,0.7);
  border: 1px solid rgba(0,212,255,0.3);
  padding: 4px 14px;
  border-radius: 4px;
  margin-bottom: 12px;
}
.section-title {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}
.section-desc {
  font-size: 14px;
  color: var(--text-dim);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,212,255,0.2), rgba(255,184,0,0.1), transparent);
  max-width: var(--max-w);
  margin: 0 auto;
}

/* ═══════ Navigation ═══════ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(10,22,40,0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav-logo { width: 32px; height: 32px; border-radius: 8px; }
.nav-title { font-size: 15px; font-weight: 700; }
.nav-links { display: flex; gap: 20px; }
.nav-links a {
  font-size: 13px;
  color: var(--text-dim);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--cyan); }
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-dim);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 6px;
  transition: all 0.2s;
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}
.lang-switcher {
  display: flex;
  gap: 2px;
  background: rgba(22,34,64,0.6);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px;
}
.lang-btn {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 4px 8px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  background: transparent;
  color: var(--text-dim);
  transition: all 0.2s;
}
.lang-btn:hover { color: var(--text); background: rgba(0,212,255,0.08); }
.lang-btn.active { color: var(--cyan); background: rgba(0,212,255,0.15); box-shadow: 0 0 8px rgba(0,212,255,0.1); }
.nav-cta:hover { color: var(--cyan); border-color: rgba(0,212,255,0.3); }

/* ═══════ Hero ═══════ */
.hero {
  position: relative;
  overflow: hidden;
  padding: 120px 24px 80px;
  text-align: center;
  display: flex;
  justify-content: center;
}
.hero-glow {
  position: absolute;
  top: 0; left: 50%; transform: translateX(-50%);
  width: 800px; height: 600px;
  background: radial-gradient(ellipse, rgba(0,212,255,0.06) 0%, rgba(255,184,0,0.03) 40%, transparent 70%);
  pointer-events: none;
}
.hero-content { position: relative; max-width: 640px; }
.hero-logo-wrap {
  position: relative;
  display: inline-block;
  margin-bottom: 24px;
}
.hero-logo {
  width: 120px; height: 120px;
  border-radius: 20px;
  box-shadow: 0 0 40px rgba(0,212,255,0.15), 0 0 80px rgba(0,212,255,0.05);
}
.hero-badge {
  position: absolute;
  bottom: -4px; right: -4px;
  width: 32px; height: 32px;
  border-radius: 10px;
  background: rgba(255,184,0,0.2);
  border: 1px solid rgba(255,184,0,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold);
}
.hero-badges { display: flex; gap: 8px; justify-content: center; margin-bottom: 16px; }
.badge {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(0,212,255,0.7);
  border: 1px solid rgba(0,212,255,0.3);
  padding: 4px 12px;
  border-radius: 4px;
}
.badge-gold { color: rgba(255,184,0,0.7); border-color: rgba(255,184,0,0.3); }
.hero-title { font-size: 52px; font-weight: 900; letter-spacing: -0.03em; line-height: 1.1; margin-bottom: 16px; }
.hero-desc { font-size: 16px; color: var(--text-dim); line-height: 1.7; margin-bottom: 28px; }
.hero-desc strong { color: var(--cyan); font-weight: 600; }
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 36px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
}
.btn-primary {
  background: rgba(0,212,255,0.1);
  color: var(--cyan);
  border: 1px solid rgba(0,212,255,0.3);
}
.btn-primary:hover { background: rgba(0,212,255,0.2); border-color: rgba(0,212,255,0.5); }
.btn-outline-gold {
  background: transparent;
  color: var(--gold);
  border: 1px solid rgba(255,184,0,0.3);
}
.btn-outline-gold:hover { background: rgba(255,184,0,0.1); }

.disclaimer {
  max-width: 480px;
  margin: 0 auto;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 18px;
  border-radius: 12px;
  background: rgba(22,34,64,0.5);
  border: 1px solid rgba(255,184,0,0.2);
  font-size: 11px;
  color: var(--text-dim);
  line-height: 1.6;
  text-align: left;
}
.disclaimer svg { flex-shrink: 0; color: var(--gold); margin-top: 2px; }
.disclaimer strong { color: var(--gold); }

/* ═══════ Architecture Diagram ═══════ */
.arch-diagram {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 24px 0;
}
.arch-block {
  border-radius: 12px;
  padding: 18px 24px;
  text-align: center;
  min-width: 260px;
  position: relative;
}
.arch-input, .arch-output {
  padding: 10px 20px;
  border-radius: 999px;
  background: rgba(22,34,64,0.6);
  border: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 12px;
  color: rgba(0,212,255,0.7);
}
.arch-output {
  color: rgba(0,232,123,0.7);
  border-color: rgba(0,232,123,0.2);
}
.arch-prelude {
  background: linear-gradient(135deg, rgba(0,212,255,0.08), rgba(0,212,255,0.02));
  border: 1px solid rgba(0,212,255,0.2);
}
.arch-coda {
  background: linear-gradient(135deg, rgba(0,232,123,0.08), rgba(0,232,123,0.02));
  border: 1px solid rgba(0,232,123,0.2);
}
.arch-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
  display: block;
  margin-bottom: 4px;
}
.label-gold { color: var(--gold); }
.label-green { color: var(--green); }
.arch-sub { font-size: 12px; color: var(--text-dim); }

.arch-flow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 2px 0;
}
.flow-line {
  width: 80px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  background-size: 200% 100%;
  animation: flowLine 2s linear infinite;
}
@keyframes flowLine { 0%{background-position:0% 50%} 100%{background-position:200% 50%} }
.flow-arrow { font-size: 10px; color: rgba(0,212,255,0.4); }
.flow-label {
  font-family: var(--mono);
  font-size: 9px;
  color: rgba(0,212,255,0.4);
  letter-spacing: 0.05em;
}

.arch-recurrent-wrap {
  position: relative;
}
.arch-recurrent {
  background: linear-gradient(135deg, rgba(255,184,0,0.06), rgba(255,184,0,0.02));
  border: 1px solid rgba(255,184,0,0.2);
  padding: 24px;
  min-width: 340px;
  position: relative;
}
.arch-recurrent::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 12px;
  background: radial-gradient(ellipse at 50% 0%, rgba(255,184,0,0.12), transparent 70%);
  pointer-events: none;
}
.arch-recurrent > * { position: relative; z-index: 1; }
.arch-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 14px;
}
.arch-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 8px;
  background: rgba(10,22,40,0.6);
  border: 1px solid var(--border);
}
.arch-chip strong { font-size: 12px; color: rgba(255,184,0,0.9); display: block; }
.arch-chip small { font-size: 10px; color: var(--text-dim); }
.chip-icon { font-size: 14px; flex-shrink: 0; }

.act-chip { margin-top: 14px; grid-column: 1 / -1; }
.act-dot { color: var(--green); font-size: 10px; animation: pulseDot 2s ease-in-out infinite; }
@keyframes pulseDot { 0%,100%{opacity:1} 50%{opacity:0.4} }
.act-chip span:last-child { font-size: 11px; font-family: var(--mono); color: rgba(0,232,123,0.8); }

.loop-indicator {
  position: absolute;
  right: -36px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.loop-label {
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.2em;
  color: rgba(255,184,0,0.3);
  writing-mode: vertical-rl;
}

.arch-output-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}
.arch-chip-small {
  padding: 8px 14px;
  border-radius: 8px;
  background: rgba(22,34,64,0.6);
  border: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 12px;
  color: rgba(0,212,255,0.7);
}
.arch-arrow-small { color: rgba(123,139,165,0.4); font-size: 14px; }

.info-box {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 18px;
  border-radius: 12px;
  background: rgba(22,34,64,0.3);
  border: 1px solid var(--border);
  margin-top: 28px;
}
.info-box svg { flex-shrink: 0; margin-top: 2px; }
.info-box strong { color: var(--cyan); }
.info-box code {
  font-size: 12px;
  color: rgba(0,212,255,0.8);
  background: rgba(0,212,255,0.1);
  padding: 1px 6px;
  border-radius: 4px;
}

/* ═══════ Features Grid ═══════ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}
.feature-card {
  padding: 20px;
  border-radius: 12px;
  background: rgba(22,34,64,0.25);
  border: 1px solid var(--border);
  transition: border-color 0.3s;
}
.feature-card:hover { border-color: rgba(0,212,255,0.25); }
.feature-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--c) 15%, transparent), color-mix(in srgb, var(--c) 5%, transparent));
  border: 1px solid color-mix(in srgb, var(--c) 25%, transparent);
  color: var(--c);
}
.feature-card h3 { font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.feature-card p { font-size: 12px; color: var(--text-dim); line-height: 1.65; }

/* ═══════ Validation ═══════ */
.val-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.val-col h3 { font-size: 13px; font-weight: 600; margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }
.val-col-title svg { width: 16px; height: 16px; color: var(--cyan); }
.val-list { display: flex; flex-direction: column; gap: 8px; }
.val-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  background: rgba(22,34,64,0.25);
  border: 1px solid var(--border);
  font-size: 12px;
}
.val-item.pass .val-icon { color: var(--green); }
.val-item.warn .val-icon { color: var(--gold); }
.val-icon { font-weight: 700; flex-shrink: 0; margin-top: 1px; }
.val-item.warn small { display: block; font-size: 10px; color: rgba(255,184,0,0.7); margin-top: 2px; }

.val-item.yes, .val-item.no {
  justify-content: space-between;
  align-items: center;
}
.val-badge {
  font-family: var(--mono);
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 4px;
  flex-shrink: 0;
}
.yes-badge { color: rgba(0,232,123,0.8); border: 1px solid rgba(0,232,123,0.3); background: rgba(0,232,123,0.05); }
.no-badge { color: rgba(255,77,106,0.6); border: 1px solid rgba(255,77,106,0.3); background: rgba(255,77,106,0.05); }

.finding-box {
  margin-top: 16px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px;
  border-radius: 10px;
  background: rgba(255,184,0,0.05);
  border: 1px solid rgba(255,184,0,0.15);
  font-size: 11px;
  color: var(--text-dim);
  line-height: 1.6;
}
.finding-box svg { flex-shrink: 0; margin-top: 2px; }
.finding-box strong { color: var(--gold); }
.finding-box code {
  font-size: 11px;
  color: rgba(0,212,255,0.7);
  background: rgba(0,212,255,0.1);
  padding: 1px 5px;
  border-radius: 3px;
  word-break: break-all;
}

/* ═══════ Guide ═══════ */
.guide-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.guide-grid h3 { font-size: 13px; font-weight: 600; margin-bottom: 10px; }
.code-block {
  background: #0A1220;
  border: 1px solid rgba(0,212,255,0.1);
  border-radius: 10px;
  margin-bottom: 18px;
  overflow: hidden;
}
.code-block pre {
  margin: 0;
  padding: 16px;
  overflow-x: auto;
}
.code-block code {
  font-size: 12px;
  line-height: 1.7;
  color: #C8D4E8;
}

.expect-list { display: flex; flex-direction: column; gap: 10px; }
.expect-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  background: rgba(22,34,64,0.25);
  border: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-dim);
  line-height: 1.6;
}
.check { color: var(--green); font-weight: 700; flex-shrink: 0; }

/* ═══════ Files ═══════ */
.files-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}
.file-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  padding: 16px;
  border-radius: 10px;
  background: rgba(22,34,64,0.25);
  border: 1px solid var(--border);
  transition: all 0.2s;
  cursor: pointer;
}
.file-card:hover { border-color: rgba(0,212,255,0.3); transform: translateY(-1px); }
.file-icon { font-size: 20px; }
.file-card strong { font-size: 13px; }
.file-card small { font-size: 11px; color: var(--text-dim); }

/* ═══════ Roadmap ═══════ */
.timeline {
  position: relative;
  padding-left: 36px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, rgba(0,232,123,0.3), rgba(0,212,255,0.2), rgba(255,184,0,0.1), transparent);
}
.timeline-item {
  position: relative;
  padding-bottom: 24px;
}
.timeline-dot {
  position: absolute;
  left: -28px;
  top: 16px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid rgba(0,212,255,0.3);
  background: var(--deep);
}
.timeline-dot.done {
  border-color: var(--green);
  background: var(--green);
  box-shadow: 0 0 10px rgba(0,232,123,0.4);
}
.timeline-content {
  padding: 16px;
  border-radius: 10px;
  background: rgba(22,34,64,0.25);
  border: 1px solid var(--border);
}
.timeline-header { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.phase-badge {
  font-family: var(--mono);
  font-size: 10px;
  color: rgba(0,212,255,0.6);
  border: 1px solid rgba(0,212,255,0.2);
  padding: 2px 8px;
  border-radius: 4px;
}
.done-badge { color: rgba(0,232,123,0.8); border-color: rgba(0,232,123,0.3); background: rgba(0,232,123,0.05); }
.done-tag { font-size: 10px; color: var(--green); }
.timeline-content h4 { font-size: 13px; font-weight: 600; margin-bottom: 4px; }
.timeline-content p { font-size: 12px; color: var(--text-dim); line-height: 1.6; }

/* ═══════ Bibliography ═══════ */
.refs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.ref-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  background: rgba(22,34,64,0.2);
  border: 1px solid var(--border);
  transition: all 0.2s;
  font-size: 12px;
  color: var(--text-dim);
}
.ref-item:hover { border-color: rgba(0,212,255,0.3); color: rgba(0,212,255,0.9); }
.ref-item svg { flex-shrink: 0; opacity: 0.4; }
.ref-item:hover svg { opacity: 0.7; }
.ref-id {
  font-family: var(--mono);
  font-size: 10px;
  color: rgba(0,212,255,0.6);
  border: 1px solid rgba(0,212,255,0.2);
  padding: 2px 6px;
  border-radius: 4px;
  flex-shrink: 0;
}

/* ═══════ Footer ═══════ */
.footer {
  border-top: 1px solid var(--border);
  padding: 28px 24px;
  margin-top: 0;
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  color: var(--text-dim);
}
.footer-logo { width: 24px; height: 24px; border-radius: 6px; object-fit: cover; }
.footer-links { display: flex; gap: 16px; }
.footer-links a { font-size: 12px; color: var(--text-dim); transition: color 0.2s; }
.footer-links a:hover { color: var(--cyan); }
.footer-copy { font-size: 11px; color: rgba(123,139,165,0.5); }

/* ═══════ Responsive ═══════ */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hero-title { font-size: 36px; }
  .hero-desc { font-size: 14px; }
  .arch-recurrent { min-width: 280px; padding: 18px; }
  .arch-grid { grid-template-columns: 1fr; }
  .loop-indicator { display: none; }
  .features-grid { grid-template-columns: 1fr; }
  .val-grid, .guide-grid, .refs-grid { grid-template-columns: 1fr; }
  .files-grid { grid-template-columns: 1fr 1fr; }
  .footer-inner { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .hero-logo { width: 88px; height: 88px; }
  .hero-title { font-size: 30px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .files-grid { grid-template-columns: 1fr; }
  .section { padding: 56px 16px; }
  .section-title { font-size: 22px; }
}