:root {
    --bg-primary: #09090b;
    --bg-secondary: #0c0c0f;
    --bg-tertiary: #141419;
    --bg-elevated: #1a1a21;
    --border: #23232b;
    --border-light: #2e2e38;
    --text-primary: #fafafc;
    --text-secondary: #a0a0ab;
    --text-muted: #6b6b76;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --accent-subtle: rgba(59, 130, 246, 0.1);
    --success: #10b981;
    --success-subtle: rgba(16, 185, 129, 0.1);
    --warning: #f59e0b;
    --warning-subtle: rgba(245, 158, 11, 0.1);
    --danger: #ef4444;
    --danger-subtle: rgba(239, 68, 68, 0.1);
    --purple: #8b5cf6;
    --purple-subtle: rgba(139, 92, 246, 0.1);
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'IBM Plex Mono', 'Fira Code', 'Consolas', monospace;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.5);
}

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

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
}

code {
    font-family: var(--font-mono);
    font-size: 0.875em;
    background: var(--bg-tertiary);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--accent);
}

/* ========== NAVIGATION ========== */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(9, 9, 11, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
}

.nav-container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.125rem;
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.15s;
}

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

.nav-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all 0.15s;
}

.nav-btn:hover {
    background: var(--bg-elevated);
    border-color: var(--border-light);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
}

/* ========== HERO ========== */
.hero {
    padding: 100px 0 80px;
    text-align: center;
    background: 
        radial-gradient(ellipse 80% 50% at 50% -20%, var(--accent-subtle) 0%, transparent 60%),
        var(--bg-primary);
}

.badge {
    display: inline-block;
    padding: 6px 14px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--accent);
    background: var(--accent-subtle);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 100px;
    margin-bottom: 24px;
}

.hero h1 {
    font-size: 3.25rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent) 0%, var(--purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 40px;
    line-height: 1.75;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 60px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    background: var(--accent);
    color: white;
    font-weight: 600;
    font-size: 0.9375rem;
    text-decoration: none;
    border-radius: var(--radius);
    transition: all 0.15s;
    box-shadow: 0 4px 14px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    background: transparent;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.9375rem;
    text-decoration: none;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all 0.15s;
}

.btn-secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-light);
}

/* Terminal in Hero */
.terminal-hero {
    max-width: 680px;
    margin: 0 auto;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    text-align: left;
    box-shadow: var(--shadow-lg);
}

.terminal-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border);
}

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

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27ca40; }

.terminal-title {
    font-size: 0.8125rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.terminal-body {
    padding: 20px;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.7;
}

.terminal-line {
    min-height: 1.4em;
}

.prompt { color: var(--success); margin-right: 8px; }
.success { color: var(--success); }
.warning { color: var(--warning); }
.danger { color: var(--danger); }
.dim { color: var(--text-muted); }
.bold { font-weight: 600; }
.primary { color: var(--accent); }
.accent { color: var(--purple); }

/* ========== STATS BAR ========== */
.stats-bar {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 28px 0;
}

.stats-bar .container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 48px;
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    font-family: var(--font-mono);
}

.stat-label {
    font-size: 0.8125rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ========== SECTION HEADERS ========== */
.section-header {
    text-align: center;
    margin-bottom: 56px;
}

.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent);
    margin-bottom: 12px;
}

.section-header h2 {
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.section-desc {
    color: var(--text-secondary);
    font-size: 1.0625rem;
    margin-top: 16px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ========== THREATS SECTION ========== */
.threats-section {
    padding: 100px 0;
    background: var(--bg-primary);
}

.threats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.threat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: all 0.2s;
}

.threat-card:hover {
    border-color: var(--border-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.threat-card.critical { border-top: 3px solid var(--danger); }
.threat-card.high { border-top: 3px solid var(--warning); }
.threat-card.medium { border-top: 3px solid var(--accent); }
.threat-card.supply { border-top: 3px solid var(--purple); }

.threat-severity {
    display: inline-block;
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    padding: 4px 8px;
    border-radius: 4px;
    margin-bottom: 16px;
}

.threat-card.critical .threat-severity {
    background: var(--danger-subtle);
    color: var(--danger);
}

.threat-card.high .threat-severity {
    background: var(--warning-subtle);
    color: var(--warning);
}

.threat-card.medium .threat-severity {
    background: var(--accent-subtle);
    color: var(--accent);
}

.threat-card.supply .threat-severity {
    background: var(--purple-subtle);
    color: var(--purple);
}

.threat-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.threat-card p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

.threat-example {
    background: var(--bg-tertiary);
    padding: 12px 16px;
    border-radius: var(--radius);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--text-muted);
    overflow-x: auto;
}

.threat-example code {
    background: none;
    padding: 0;
    color: inherit;
}

/* ========== DETECTION SECTION ========== */
.detection-section {
    padding: 100px 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.detection-table-wrapper {
    overflow-x: auto;
    margin-bottom: 48px;
}

.detection-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9375rem;
}

.detection-table th,
.detection-table td {
    padding: 16px 20px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.detection-table th {
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--bg-tertiary);
}

.detection-table td {
    color: var(--text-secondary);
}

.detection-table td code {
    font-size: 0.8125rem;
}

.detection-table .score {
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--danger);
}

.severity-badge {
    display: inline-block;
    font-size: 0.6875rem;
    font-weight: 700;
    padding: 4px 8px;
    border-radius: 4px;
    letter-spacing: 0.02em;
}

.severity-badge.critical {
    background: var(--danger-subtle);
    color: var(--danger);
}

.severity-badge.high {
    background: var(--warning-subtle);
    color: var(--warning);
}

.severity-badge.medium {
    background: var(--accent-subtle);
    color: var(--accent);
}

.severity-badge.low {
    background: var(--success-subtle);
    color: var(--success);
}

.detection-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature {
    display: flex;
    gap: 16px;
}

.feature svg {
    flex-shrink: 0;
    color: var(--accent);
}

.feature h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.feature p {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* ========== DEMO SECTION ========== */
.demo-section {
    padding: 100px 0;
    background: var(--bg-primary);
}

.demo-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    min-height: 480px;
    box-shadow: var(--shadow-lg);
}

.editor-pane {
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border);
}

.terminal-pane {
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
}

.pane-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border);
}

.pane-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8125rem;
    font-family: var(--font-mono);
    color: var(--text-muted);
}

.preset-btns {
    display: flex;
    gap: 8px;
}

.preset-btn {
    padding: 6px 12px;
    font-size: 0.75rem;
    font-weight: 500;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s;
}

.preset-btn:hover {
    background: var(--border);
    color: var(--text-primary);
}

.preset-btn.danger {
    border-color: rgba(239, 68, 68, 0.3);
    color: var(--danger);
}

.preset-btn.danger:hover {
    background: var(--danger-subtle);
}

#codeEditor {
    flex: 1;
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: none;
    padding: 20px;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.6;
    resize: none;
    outline: none;
}

#codeEditor::placeholder {
    color: var(--text-muted);
}

#scanBtn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px;
    background: var(--accent);
    border: none;
    color: white;
    font-weight: 600;
    font-size: 0.9375rem;
    cursor: pointer;
    transition: background 0.15s;
}

#scanBtn:hover {
    background: var(--accent-hover);
}

#scanBtn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.terminal-content {
    flex: 1;
    padding: 20px;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    line-height: 1.7;
    overflow-y: auto;
    color: var(--text-secondary);
}

.spin {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ========== INSTALL SECTION ========== */
.install-section {
    padding: 100px 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
}

.install-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.install-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px;
}

.install-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.install-card p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.code-block {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    background: var(--bg-primary);
    padding: 14px 16px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.code-block code {
    background: none;
    padding: 0;
    font-size: 0.8125rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.code-block.wide {
    display: block;
}

.code-block.wide pre {
    margin: 0;
    white-space: pre-wrap;
    word-break: break-word;
}

.code-block.wide code {
    white-space: pre;
}

.copy-btn {
    flex-shrink: 0;
    padding: 6px 12px;
    font-size: 0.75rem;
    font-weight: 500;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s;
}

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

.ci-example {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
}

.ci-example h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.ci-example > p {
    font-size: 0.9375rem;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.ci-example .code-block {
    background: var(--bg-primary);
}

/* ========== FOOTER ========== */
.footer {
    padding: 64px 0 32px;
    background: var(--bg-primary);
    border-top: 1px solid var(--border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    gap: 64px;
    margin-bottom: 48px;
}

.footer-brand {
    max-width: 300px;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 0.9375rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.footer-links {
    display: flex;
    gap: 64px;
}

.footer-col h4 {
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.footer-col a {
    display: block;
    font-size: 0.9375rem;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 12px;
    transition: color 0.15s;
}

.footer-col a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--border);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
    .detection-features {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .install-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero h1 {
        font-size: 2.25rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .threats-grid {
        grid-template-columns: 1fr;
    }
    
    .demo-container {
        grid-template-columns: 1fr;
        min-height: auto;
    }
    
    .editor-pane {
        border-right: none;
        border-bottom: 1px solid var(--border);
        min-height: 300px;
    }
    
    .terminal-pane {
        min-height: 300px;
    }
    
    .detection-features {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 40px;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 32px;
    }
    
    .stats-bar .container {
        gap: 24px;
    }
    
    .stat-value {
        font-size: 1.25rem;
    }
}