:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --border-color: #30363d;
  --text-primary: #f0f6fc;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  --accent-blue: #58a6ff;
  --accent-purple: #bc8cff;
  --accent-green: #3fb950;
  --accent-orange: #f0883e;
  --accent-red: #f85149;
  --glow-gradient: radial-gradient(circle at 50% -20%, rgba(88, 166, 255, 0.15), transparent 70%);
  --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

[data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f6f8fa;
  --bg-tertiary: #eaeef2;
  --border-color: #d0d7de;
  --text-primary: #1f2328;
  --text-secondary: #656d76;
  --text-muted: #8c959f;
  --accent-blue: #0969da;
  --accent-purple: #8250df;
  --accent-green: #1a7f37;
  --accent-orange: #bc4c00;
  --accent-red: #cf222e;
  --glow-gradient: radial-gradient(circle at 50% -20%, rgba(9, 105, 218, 0.08), transparent 70%);
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  background-image: var(--glow-gradient);
  background-repeat: no-repeat;
  min-height: 100vh;
}

a {
  color: var(--accent-blue);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--border-color);
  background-color: rgba(13, 17, 23, 0.8);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

[data-theme="light"] .site-header {
  background-color: rgba(255, 255, 255, 0.85);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-primary);
  text-decoration: none !important;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--text-primary);
  text-decoration: none;
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-ctrl {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: inherit;
  transition: all 0.2s;
}

.btn-ctrl:hover {
  background: var(--bg-tertiary);
  border-color: var(--accent-blue);
}

/* Hero */
.hero-section {
  padding: 80px 0 60px;
  text-align: center;
}

.badge-row {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.badge.highlight {
  color: var(--accent-orange);
  border-color: rgba(240, 136, 62, 0.3);
  background: rgba(240, 136, 62, 0.1);
}

.hero-title {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.03em;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple), var(--accent-orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 780px;
  margin: 0 auto 36px;
  line-height: 1.5;
}

.terminal-box {
  max-width: 620px;
  margin: 0 auto 36px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  overflow: hidden;
  text-align: left;
}

.terminal-header {
  background: var(--bg-tertiary);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
}

.dots {
  display: flex;
  gap: 6px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot-red { background: #ff5f56; }
.dot-yellow { background: #ffbd2e; }
.dot-green { background: #27c93f; }

.terminal-body {
  padding: 18px 20px;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--accent-green);
}

.terminal-code {
  user-select: all;
  display: flex;
  align-items: center;
  gap: 8px;
}

.prompt-symbol {
  color: var(--text-muted);
}

.btn-copy {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-copy:hover {
  border-color: var(--accent-blue);
  background: var(--bg-primary);
}

/* Showcase Simulator */
.section {
  padding: 60px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto;
}

.simulator-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 28px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.sim-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

@media (max-width: 860px) {
  .sim-grid {
    grid-template-columns: 1fr;
  }
}

.sim-panel {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 20px;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
  font-weight: 600;
  font-size: 0.95rem;
}

.sim-controls {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.btn-sim {
  padding: 10px 16px;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all 0.2s;
  font-family: inherit;
}

.btn-sim-antigravity {
  background: rgba(88, 166, 255, 0.15);
  border-color: rgba(88, 166, 255, 0.4);
  color: var(--accent-blue);
}

.btn-sim-antigravity:hover {
  background: rgba(88, 166, 255, 0.25);
}

.btn-sim-claude {
  background: rgba(240, 136, 62, 0.15);
  border-color: rgba(240, 136, 62, 0.4);
  color: var(--accent-orange);
}

.btn-sim-claude:hover {
  background: rgba(240, 136, 62, 0.25);
}

.btn-sim-release {
  background: var(--bg-secondary);
  border-color: var(--border-color);
  color: var(--text-secondary);
}

.btn-sim-release:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.lock-status-box {
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: 6px;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
}

.log-stream {
  height: 240px;
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.log-entry {
  padding: 6px 10px;
  border-radius: 4px;
  background: var(--bg-secondary);
  border-left: 3px solid var(--accent-blue);
}

.log-entry.warn {
  border-left-color: var(--accent-red);
  color: var(--accent-red);
}

.log-entry.success {
  border-left-color: var(--accent-green);
  color: var(--accent-green);
}

/* Feature Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 24px;
  transition: transform 0.2s, border-color 0.2s;
}

.feature-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-blue);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.feature-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.feature-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Client Table */
.client-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-secondary);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.client-table th, .client-table td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.client-table th {
  background: var(--bg-tertiary);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.client-table td {
  font-size: 0.95rem;
}

.code-inline {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  background: var(--bg-primary);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--border-color);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border-color);
  padding: 40px 0;
  margin-top: 80px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 16px;
}