/* ===== CSS Variables ===== */
:root {
    /* Colors - Lobster Theme */
    --color-bg: #0a0e1a;
    --color-bg-secondary: #111827;
    --color-bg-card: #1a1f2e;
    --color-bg-code: #0d1117;

    --color-primary: #ef4444;
    --color-primary-light: #f87171;
    --color-primary-dark: #dc2626;

    --color-accent: #f97316;
    --color-accent-light: #fb923c;

    --color-text: #f9fafb;
    --color-text-secondary: #9ca3af;
    --color-text-muted: #6b7280;

    --color-border: #374151;
    --color-border-light: #4b5563;

    --color-success: #22c55e;
    --color-warning: #eab308;
    --color-error: #ef4444;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 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;
    --spacing-3xl: 4rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(239, 68, 68, 0.3);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;

    /* Container */
    --container-max: 1200px;
    --container-padding: 1.5rem;
}

/* ===== Reset & Base ===== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--color-primary-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul {
    list-style: none;
}

/* ===== Utilities ===== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

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

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    font-weight: 500;
    line-height: 1;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    box-shadow: var(--shadow-md), var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(239, 68, 68, 0.4);
    color: white;
}

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.0625rem;
}

/* ===== Navigation ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 26, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    height: 4rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    color: var(--color-text);
}

.nav-logo:hover {
    color: var(--color-text);
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-icon svg {
    width: 28px;
    height: 28px;
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-links a {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    font-weight: 500;
}

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

.nav-btn {
    padding: 0.5rem 1rem;
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 0.5rem;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition-fast);
}

/* ===== Hero Section ===== */
.hero {
    padding: 8rem 0 5rem;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: radial-gradient(ellipse at top, rgba(239, 68, 68, 0.1) 0%, transparent 50%),
                var(--color-bg);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.5rem 1rem;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-primary-light);
    margin-bottom: var(--spacing-lg);
}

.hero-badge svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-xl);
    max-width: 540px;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
}

.hero-stats {
    display: flex;
    gap: var(--spacing-2xl);
}

.stat {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.stat-value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
}

.stat-label {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

/* Code Window */
.hero-visual {
    display: flex;
    justify-content: center;
}

.code-window {
    background: var(--color-bg-code);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    width: 100%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
}

.code-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1rem;
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
}

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

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

.code-title {
    margin-left: auto;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    font-family: var(--font-mono);
}

.code-content {
    padding: var(--spacing-lg);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.8;
    overflow-x: auto;
}

.code-content code {
    display: block;
}

.code-prompt { color: var(--color-primary-light); }
.code-comment { color: var(--color-text-muted); }
.code-success { color: var(--color-success); }
.code-output { color: var(--color-text-secondary); }

/* ===== Section Styles ===== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== About Section ===== */
.about {
    padding: 6rem 0;
    background: var(--color-bg-secondary);
}

.about-content {
    margin-bottom: var(--spacing-3xl);
}

.about-text {
    max-width: 800px;
    margin: 0 auto var(--spacing-3xl);
}

.about-text p {
    font-size: 1.0625rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

.about-text strong {
    color: var(--color-text);
}

.quote {
    padding: var(--spacing-lg);
    border-left: 3px solid var(--color-primary);
    background: rgba(239, 68, 68, 0.05);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    font-style: italic;
    color: var(--color-text);
}

.quote cite {
    display: block;
    margin-top: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--color-text-muted);
    font-style: normal;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.feature-card {
    padding: var(--spacing-xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

.feature-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
}

.feature-icon svg {
    width: 32px;
    height: 32px;
}

.feature-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Comparison Table */
.comparison {
    max-width: 800px;
    margin: 0 auto;
}

.comparison-title {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xl);
}

.comparison-table {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.comparison-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
}

.comparison-row.header {
    background: var(--color-bg);
    font-weight: 600;
}

.comparison-row:not(:last-child) {
    border-bottom: 1px solid var(--color-border);
}

.comparison-cell {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 0.9375rem;
}

.comparison-cell .check {
    color: var(--color-success);
    font-weight: 600;
}

.comparison-cell .cross {
    color: var(--color-text-muted);
}

/* ===== Tutorial Section ===== */
.tutorial {
    padding: 6rem 0;
}

.platform-tabs {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-2xl);
}

.platform-tab {
    padding: 0.75rem 1.5rem;
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.platform-tab:hover {
    border-color: var(--color-border-light);
    color: var(--color-text);
}

.platform-tab.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

/* Steps */
.steps {
    max-width: 800px;
    margin: 0 auto var(--spacing-2xl);
}

.step {
    display: flex;
    gap: var(--spacing-xl);
    padding: var(--spacing-xl) 0;
    border-bottom: 1px solid var(--color-border);
}

.step:last-child {
    border-bottom: none;
}

.step-number {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-full);
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
}

.step-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.step-content > p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.code-block {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-bg-code);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
}

.code-block code {
    flex: 1;
    font-family: var(--font-mono);
    font-size: 0.9375rem;
    color: var(--color-primary-light);
}

.copy-btn {
    padding: 0.375rem 0.75rem;
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.copy-btn:hover {
    background: var(--color-bg-card);
    color: var(--color-text);
}

.copy-btn.copied {
    background: var(--color-success);
    border-color: var(--color-success);
    color: white;
}

.step-note {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.step-note a {
    color: var(--color-primary-light);
}

/* Notes Box */
.notes {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-xl);
    background: rgba(234, 179, 8, 0.1);
    border: 1px solid rgba(234, 179, 8, 0.3);
    border-radius: var(--radius-lg);
}

.notes h3 {
    display: flex;
    align-items: center;
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-warning);
}

.notes h3 svg {
    flex-shrink: 0;
}

.notes ul {
    margin-bottom: var(--spacing-md);
}

.notes li {
    position: relative;
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
}

.notes li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-warning);
}

.notes li strong {
    color: var(--color-text);
}

.notes > p {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
}

/* ===== Stories Section ===== */
.stories {
    padding: 6rem 0;
    background: var(--color-bg-secondary);
}

.stories-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.story-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    transition: all var(--transition-normal);
}

.story-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.story-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.story-avatar {
    width: 48px;
    height: 48px;
    background: var(--color-bg);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

.story-avatar svg {
    width: 24px;
    height: 24px;
}

.story-meta {
    display: flex;
    flex-direction: column;
}

.story-author {
    font-weight: 600;
    color: var(--color-text);
}

.story-platform {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.story-content {
    flex: 1;
}

.story-content p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.story-highlights {
    margin-bottom: var(--spacing-lg);
}

.story-highlights li {
    position: relative;
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.story-highlights li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-success);
}

.story-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-primary-light);
    margin-top: auto;
}

.story-link:hover {
    color: var(--color-primary);
}

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

.stories-cta p {
    font-size: 1.0625rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== CTA Section ===== */
.cta {
    padding: 6rem 0;
    background: radial-gradient(ellipse at bottom, rgba(239, 68, 68, 0.1) 0%, transparent 50%),
                var(--color-bg);
}

.cta-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.cta-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* ===== Footer ===== */
.footer {
    padding: var(--spacing-2xl) 0;
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.footer-brand .logo-icon svg {
    width: 24px;
    height: 24px;
}

.footer-brand .logo-text {
    font-size: 1.125rem;
    font-weight: 600;
}

.footer-links {
    display: flex;
    gap: var(--spacing-xl);
}

.footer-links a {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
}

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

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

.footer-copyright {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.footer-disclaimer {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ===== Responsive Design ===== */

/* Tablet */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: 2.75rem;
    }

    .hero-subtitle {
        margin: 0 auto var(--spacing-xl);
    }

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

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

    .hero-visual {
        order: -1;
        margin-bottom: var(--spacing-xl);
    }

    .code-window {
        max-width: 100%;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stories-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        padding: var(--spacing-lg);
        background: var(--color-bg-secondary);
        border-bottom: 1px solid var(--color-border);
        gap: var(--spacing-md);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

    .hero {
        padding: 6rem 0 4rem;
        min-height: auto;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .hero-cta .btn {
        width: 100%;
        max-width: 300px;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .section-title {
        font-size: 1.875rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .comparison-row {
        grid-template-columns: 1.5fr 1fr 1fr;
    }

    .comparison-cell {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.8125rem;
    }

    .step {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .step-number {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .code-block {
        flex-direction: column;
        align-items: flex-start;
    }

    .code-block code {
        width: 100%;
        overflow-x: auto;
    }

    .stories-grid {
        grid-template-columns: 1fr;
    }

    .cta-title {
        font-size: 1.875rem;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .cta-buttons .btn {
        width: 100%;
        max-width: 300px;
    }

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-lg);
        text-align: center;
    }

    .footer-links {
        flex-direction: column;
        gap: var(--spacing-md);
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .platform-tabs {
        flex-wrap: wrap;
    }

    .platform-tab {
        flex: 1;
        min-width: 80px;
        padding: 0.625rem 1rem;
        font-size: 0.8125rem;
    }
}