:root {
  --bg-main: #0b0d13;
  --bg-panel: #131722;
  --bg-card: #181d2a;
  --bg-input: #0e111a;
  --border-subtle: #242b3d;
  --border-focus: #4f46e5;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-primary: #6366f1;
  --accent-primary-hover: #4f46e5;
  --accent-cyan: #06b6d4;
  --accent-green: #10b981;
  --accent-rose: #f43f5e;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-mono: ui-monospace, "JetBrains Mono", "Cascadia Code", "Fira Code", monospace;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
}

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

body {
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

/* Navbar */
.navbar {
  background-color: rgba(11, 13, 19, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-badge {
  font-size: 20px;
  background: #1e1b4b;
  color: #a5b4fc;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid #3730a3;
}

.logo-text {
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.5px;
}

.version-tag {
  background: var(--bg-card);
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--border-subtle);
}

.nav-links {
  display: flex;
  gap: 24px;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-status {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(16, 185, 129, 0.1);
  padding: 6px 12px;
  border-radius: 20px;
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.status-dot {
  width: 8px;
  height: 8px;
  background: var(--accent-green);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-green);
}

.status-label {
  font-size: 12px;
  color: var(--accent-green);
  font-weight: 600;
}

/* Hero */
.hero {
  padding: 80px 24px 60px;
  text-align: center;
  background: radial-gradient(circle at 50% 10%, rgba(99, 102, 241, 0.15), transparent 70%);
}

.hero-container {
  max-width: 880px;
  margin: 0 auto;
}

.hero-eyebrow {
  color: var(--accent-cyan);
  font-size: 12px;
  font-family: var(--font-mono);
  letter-spacing: 2px;
  font-weight: 700;
  margin-bottom: 16px;
}

.hero-title {
  font-size: 46px;
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -1.5px;
  margin-bottom: 24px;
  background: linear-gradient(180deg, #ffffff 40%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent-primary);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--accent-primary-hover);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border-subtle);
}

.btn-secondary:hover {
  border-color: #3b82f6;
}

.btn-block {
  width: 100%;
}

/* Sections */
.section {
  padding: 70px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.section-title {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 8px;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 15px;
  margin-bottom: 32px;
}

/* Metrics Grid */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.metric-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: transform 0.2s, border-color 0.2s;
}

.metric-card:hover {
  transform: translateY(-3px);
  border-color: #38bdf8;
}

.metric-card.highlight {
  border-color: rgba(99, 102, 241, 0.5);
  background: linear-gradient(180deg, rgba(99, 102, 241, 0.08) 0%, var(--bg-panel) 100%);
}

.metric-value {
  font-size: 36px;
  font-weight: 800;
  font-family: var(--font-mono);
  color: #ffffff;
  letter-spacing: -1px;
}

.metric-unit {
  color: var(--accent-cyan);
  font-size: 13px;
  font-weight: 600;
  margin-top: 4px;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.metric-desc {
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.5;
}

/* Comparison Table */
.table-responsive {
  overflow-x: auto;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-panel);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  overflow: hidden;
}

.comparison-table th, .comparison-table td {
  padding: 18px 24px;
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 14px;
}

.comparison-table th {
  background: var(--bg-card);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.comparison-table td.negative {
  color: #fda4af;
  background: rgba(244, 63, 94, 0.03);
}

.comparison-table td.positive {
  color: #a7f3d0;
  background: rgba(16, 185, 129, 0.04);
}

/* Playground */
.playground-layout {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 24px;
}

.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.panel-header {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 12px;
  color: #ffffff;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: #ffffff;
  font-family: var(--font-mono);
  font-size: 13px;
  transition: border-color 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: var(--border-focus);
}

.checkbox-group {
  margin-top: 10px;
  margin-bottom: 24px;
}

.checkbox-group label {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  color: #fca5a5;
  font-size: 13px;
}

.result-status-box {
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
}

.status-indicator {
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
}

.status-indicator.ready {
  background: rgba(148, 163, 184, 0.15);
  color: #cbd5e1;
}

.status-indicator.success {
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
}

.status-indicator.error {
  background: rgba(244, 63, 94, 0.2);
  color: #fb7185;
}

.output-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 14px;
}

.output-block {
  margin-bottom: 14px;
}

.output-block label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.code-box {
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: #e2e8f0;
  word-break: break-all;
}

.code-box.truncate {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.code-box.code-scroll {
  max-height: 90px;
  overflow-y: auto;
}

/* Commercial Grid */
.commercial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.pricing-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
}

.pricing-card.highlight {
  border-color: var(--accent-primary);
  box-shadow: 0 0 24px rgba(99, 102, 241, 0.15);
  position: relative;
}

.card-tag {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  letter-spacing: 1px;
  margin-bottom: 10px;
}

.card-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}

.card-desc {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 24px;
  min-height: 42px;
}

.feature-list {
  list-style: none;
  margin-bottom: 32px;
  flex-grow: 1;
}

.feature-list li {
  padding: 8px 0;
  color: var(--text-secondary);
  font-size: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

/* API Docs */
.api-docs {
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.api-endpoint {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  margin-top: 16px;
}

.api-badge {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 4px;
}

.api-badge.post {
  background: rgba(99, 102, 241, 0.2);
  color: #a5b4fc;
}

.api-path {
  font-family: var(--font-mono);
  font-size: 14px;
  color: #ffffff;
}

.api-summary {
  color: var(--text-muted);
  font-size: 13px;
}

.code-display {
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: #e2e8f0;
  overflow-x: auto;
  margin-bottom: 24px;
}

/* Footer */
.footer {
  padding: 40px 0;
  color: var(--text-muted);
  font-size: 13px;
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

@media (max-width: 768px) {
  .playground-layout {
    grid-template-columns: 1fr;
  }
  .hero-title {
    font-size: 32px;
  }
  .nav-links {
    display: none;
  }
  .footer-container {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}