:root {
    /* Color Palette - Modern & Premium */
    --color-bg-primary: #0f172a;
    /* Slate 900 */
    --color-bg-secondary: #1e293b;
    /* Slate 800 */
    --color-bg-tertiary: #334155;
    /* Slate 700 */

    --color-text-primary: #f8fafc;
    /* Slate 50 */
    --color-text-secondary: #94a3b8;
    /* Slate 400 */
    --color-text-muted: #64748b;
    /* Slate 500 */

    --color-accent-primary: #3b82f6;
    /* Blue 500 */
    --color-accent-hover: #2563eb;
    /* Blue 600 */
    --color-accent-subtle: rgba(59, 130, 246, 0.1);

    --color-success: #10b981;
    /* Emerald 500 */
    --color-warning: #f59e0b;
    /* Amber 500 */
    --color-error: #ef4444;
    /* Red 500 */

    --color-border: #334155;
    /* Slate 700 */

    /* Typography */
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.3);
}

/* Reset & Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--color-accent-primary);
}

/* Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.items-center {
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}

.justify-center {
    justify-content: center;
}

.gap-sm {
    gap: var(--spacing-sm);
}

.gap-md {
    gap: var(--spacing-md);
}

.gap-lg {
    gap: var(--spacing-lg);
}

.gap-xl {
    gap: var(--spacing-xl);
}

.text-center {
    text-align: center;
}

.text-sm {
    font-size: 0.875rem;
}

.text-lg {
    font-size: 1.125rem;
}

.text-xl {
    font-size: 1.25rem;
}

.text-2xl {
    font-size: 1.5rem;
}

.text-3xl {
    font-size: 1.875rem;
}

.text-4xl {
    font-size: 2.25rem;
}

.font-bold {
    font-weight: 700;
}

.font-medium {
    font-weight: 500;
}

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

.text-accent {
    color: var(--color-accent-primary);
}

/* Components */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
}

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

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    box-shadow: var(--shadow-glow);
}

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

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

.card {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: transform 0.2s, box-shadow 0.2s;
}

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

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

/* Sections */
.section {
    padding: var(--spacing-2xl) 0;
}

.hero {
    padding: 6rem 0;
    text-align: center;
    background: radial-gradient(circle at center, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
}

.hero h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

/* Terminal Demo */
.terminal-window {
    background-color: #1e1e1e;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    font-family: var(--font-mono);
    text-align: left;
    margin-top: var(--spacing-2xl);
    border: 1px solid var(--color-border);
}

.terminal-header {
    background-color: #2d2d2d;
    padding: 0.75rem;
    display: flex;
    gap: 0.5rem;
}

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

.dot-red {
    background-color: #ff5f56;
}

.dot-yellow {
    background-color: #ffbd2e;
}

.dot-green {
    background-color: #27c93f;
}

.terminal-body {
    padding: var(--spacing-lg);
    color: #d4d4d4;
    font-size: 0.9rem;
}

/* GitHub Comment Demo */
.github-comment {
    background-color: #ffffff;
    border: 1px solid #d0d7de;
    border-radius: 6px;
    text-align: left;
    margin-top: var(--spacing-2xl);
    box-shadow: var(--shadow-xl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

.gh-header {
    background-color: #f6f8fa;
    padding: 8px 16px;
    border-bottom: 1px solid #d0d7de;
    border-top-left-radius: 6px;
    border-top-right-radius: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: #57606a;
    font-size: 14px;
}

.gh-avatar {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: var(--color-accent-primary);
}

.gh-body {
    padding: 16px;
    color: #24292f;
    font-size: 14px;
}

.gh-code-block {
    background-color: #f6f8fa;
    border-radius: 6px;
    padding: 16px;
    margin: 10px 0;
    font-family: var(--font-mono);
    font-size: 12px;
    overflow-x: auto;
}

.gh-label {
    display: inline-block;
    padding: 0 7px;
    font-size: 12px;
    font-weight: 500;
    line-height: 18px;
    border-radius: 2em;
    border: 1px solid transparent;
    margin-right: 4px;
}

.gh-label-critical {
    color: #cf222e;
    border-color: #cf222e;
}

.gh-label-suggestion {
    color: #1a7f37;
    border-color: #1a7f37;
}

/* Grid Utilities */
.grid-cols-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.grid-cols-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

@media (max-width: 1024px) {
    .grid-cols-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {

    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: 1fr;
    }
}

/* Pricing */
.pricing-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.pricing-header {
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.pricing-price {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin: var(--spacing-sm) 0;
}

.pricing-features {
    list-style: none;
    margin: var(--spacing-lg) 0;
    flex-grow: 1;
}

.pricing-features li {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.pricing-features li::before {
    content: "✓";
    color: var(--color-success);
    font-weight: bold;
}

/* Tabs */
.tabs {
    display: flex;
    gap: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--spacing-lg);
}

.tab {
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    color: var(--color-text-secondary);
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

.tab:hover {
    color: var(--color-text-primary);
}

.tab.active {
    color: var(--color-accent-primary);
    border-bottom-color: var(--color-accent-primary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}