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

/* ── TOKENS ── */
:root {
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body:    'Inter', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', 'Courier New', monospace;
  --max-width:    1100px;
  --radius:       10px;
  --radius-sm:    6px;
  --transition:   0.2s ease;
}

html[data-theme="dark"] {
  --bg:            #07101f;
  --bg-surface:    #0d1a2e;
  --bg-card:       #111f38;
  --bg-card-hover: #162540;
  --nav-bg:        rgba(7, 16, 31, 0.9);
  --fg:            #dde4f0;
  --fg-muted:      #7a8fae;
  --fg-subtle:     #3d5070;
  --accent:        #f97316;
  --accent-hover:  #fb923c;
  --accent-muted:  rgba(249, 115, 22, 0.1);
  --accent-border: rgba(249, 115, 22, 0.22);
  --border:        rgba(221, 228, 240, 0.07);
  --border-strong: rgba(221, 228, 240, 0.13);
  --shadow:        0 4px 32px rgba(0, 0, 0, 0.45);
  --logo-grad-a:   #f97316;
  --logo-grad-b:   #fbbf24;
  color-scheme: dark;
}

html[data-theme="light"] {
  --bg:            #f4f7ff;
  --bg-surface:    #e8eeff;
  --bg-card:       #ffffff;
  --bg-card-hover: #f5f8ff;
  --nav-bg:        rgba(244, 247, 255, 0.9);
  --fg:            #0a1628;
  --fg-muted:      #4a5c7a;
  --fg-subtle:     #8a9ab8;
  --accent:        #ea580c;
  --accent-hover:  #c2410c;
  --accent-muted:  rgba(234, 88, 12, 0.08);
  --accent-border: rgba(234, 88, 12, 0.22);
  --border:        rgba(10, 22, 40, 0.08);
  --border-strong: rgba(10, 22, 40, 0.14);
  --shadow:        0 4px 32px rgba(10, 22, 40, 0.08);
  --logo-grad-a:   #ea580c;
  --logo-grad-b:   #f97316;
  color-scheme: light;
}

/* ── BASE ── */
html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background var(--transition), color var(--transition);
}

/* ── NAV ── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--nav-bg);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--fg);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-logo span { color: var(--accent); }

.nav-logo-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.2rem;
}

.nav-link {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--fg-muted);
  text-decoration: none;
  padding: 0.4rem 0.7rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.nav-link:hover { color: var(--fg); background: var(--bg-card); }

.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.35rem;
  cursor: pointer;
  color: var(--fg-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
  width: 32px;
  height: 32px;
  margin-left: 0.25rem;
}

.theme-toggle:hover { color: var(--fg); border-color: var(--border-strong); background: var(--bg-card); }
.theme-toggle svg { width: 15px; height: 15px; }

.icon-sun, .icon-moon { display: none; }
html[data-theme="dark"]  .icon-moon { display: block; }
html[data-theme="light"] .icon-sun  { display: block; }

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-decoration: none;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  white-space: nowrap;
}

.btn svg { width: 15px; height: 15px; flex-shrink: 0; }

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); }

.btn-secondary { background: var(--bg-card); color: var(--fg); border: 1px solid var(--border-strong); }
.btn-secondary:hover { border-color: var(--fg-subtle); transform: translateY(-1px); }

/* ── SECTIONS ── */
section { padding: 5.5rem 2rem; }

.section-inner { max-width: var(--max-width); margin: 0 auto; }

.section-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}

.section-heading {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.section-sub {
  font-size: 0.975rem;
  color: var(--fg-muted);
  max-width: 540px;
  margin-bottom: 3rem;
  line-height: 1.7;
}

/* ── HERO ── */
.hero {
  padding: 7rem 2rem 6rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, var(--fg-subtle) 1px, transparent 1px);
  background-size: 38px 38px;
  opacity: 0.18;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 180px;
  background: linear-gradient(to top, var(--bg), transparent);
  pointer-events: none;
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-logo {
  width: 72px;
  height: 72px;
  margin-bottom: 1.75rem;
  display: block;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  background: var(--accent-muted);
  border: 1px solid var(--accent-border);
  border-radius: 100px;
  padding: 0.28rem 0.75rem;
  margin-bottom: 1.75rem;
}

.hero-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.35; }
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 6vw, 4.75rem);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -0.03em;
  margin-bottom: 1.75rem;
}

.hero h1 em { font-style: normal; color: var(--accent); }

.hero-desc {
  font-size: 1.1rem;
  color: var(--fg-muted);
  max-width: 560px;
  line-height: 1.75;
  margin-bottom: 2.5rem;
}

.hero-desc p + p { margin-top: 0.6rem; }

.hero-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; }

/* ── COMPONENT PAGES ── */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--fg-subtle);
  text-decoration: none;
  margin-bottom: 2rem;
  transition: color var(--transition);
}

.back-link:hover { color: var(--fg-muted); }

.hero-component h1 { font-size: clamp(2rem, 4vw, 3.25rem); }

/* ── COMPONENTS SECTION ── */
.components {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.components-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.1rem;
}

.component-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
  transition: border-color var(--transition), background var(--transition),
              transform var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}

.component-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--accent);
  opacity: 0;
  transition: opacity var(--transition);
}

.component-card:hover {
  border-color: var(--accent-border);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.component-card:hover::before { opacity: 1; }

.card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.card-name {
  font-family: var(--font-mono);
  font-size: 0.975rem;
  font-weight: 500;
  color: var(--fg);
}

.card-status {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 0.18rem 0.5rem;
  border-radius: 100px;
  white-space: nowrap;
  flex-shrink: 0;
}

.status-wip {
  background: var(--accent-muted);
  color: var(--accent);
  border: 1px solid var(--accent-border);
}

.status-planned {
  background: var(--border);
  color: var(--fg-subtle);
  border: 1px solid var(--border-strong);
}

.card-desc { font-size: 0.875rem; color: var(--fg-muted); line-height: 1.65; flex: 1; }

.card-link {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: gap var(--transition);
}

.card-link:hover { gap: 0.5rem; }

/* ── ROADMAP ── */
.phases {
  position: relative;
  display: flex;
  flex-direction: column;
  margin-top: 2.5rem;
}

.phases::before {
  content: '';
  position: absolute;
  left: 11px;
  top: 14px;
  bottom: 14px;
  width: 2px;
  background: var(--border-strong);
}

.phase {
  display: flex;
  gap: 1.5rem;
  padding-bottom: 2.25rem;
  position: relative;
}

.phase:last-child { padding-bottom: 0; }

.phase-dot {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid var(--border-strong);
  background: var(--bg);
  flex-shrink: 0;
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
  transition: border-color var(--transition);
}

.phase-dot.current {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-muted);
}

.phase-dot.current::after {
  content: '';
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2.4s ease-in-out infinite;
}

.phase-content { flex: 1; padding-top: 1px; }

.phase-title {
  font-family: var(--font-display);
  font-size: 0.975rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.phase-desc { font-size: 0.875rem; color: var(--fg-muted); line-height: 1.65; }

.phase-links {
  margin-top: 0.6rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.phase-link {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  text-decoration: none;
  transition: opacity var(--transition);
}

.phase-link:hover { opacity: 0.75; }

/* ── CONTRIBUTE ── */
.contribute {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
}

.contribute-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.1rem;
  margin-top: 2.5rem;
}

.contribute-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.contribute-card h3 { font-family: var(--font-display); font-size: 1.05rem; font-weight: 600; }

.contribute-card p {
  font-size: 0.875rem;
  color: var(--fg-muted);
  line-height: 1.65;
  flex: 1;
  margin-bottom: 0.75rem;
}

/* ── FOOTER ── */
footer { padding: 2rem; border-top: 1px solid var(--border); }

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-logo { font-family: var(--font-mono); font-size: 0.8rem; color: var(--fg-muted); }
.footer-logo span { color: var(--accent); }

.footer-links { display: flex; gap: 1.25rem; }

.footer-link {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--fg-subtle);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-link:hover { color: var(--fg-muted); }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  section { padding: 4rem 1.25rem; }
  .hero { padding: 5rem 1.25rem 4rem; }
  .nav-inner { padding: 0 1.25rem; }
  .contribute-grid { grid-template-columns: 1fr; }
}