/* Material Design 3 - Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;500;700&family=Roboto+Mono:wght@400;500&display=swap');

:root {
    /* Material Design 3 Color Palette */
    --md-primary: #6750A4;
    --md-primary-container: #EADDFF;
    --md-on-primary: #FFFFFF;
    --md-on-primary-container: #21005D;
    
    --md-secondary: #625B71;
    --md-secondary-container: #E8DEF8;
    --md-on-secondary: #FFFFFF;
    --md-on-secondary-container: #1D192B;
    
    --md-tertiary: #7D5260;
    --md-tertiary-container: #FFD8E4;
    --md-on-tertiary: #FFFFFF;
    
    --md-surface: #1C1B1F;
    --md-surface-variant: #49454F;
    --md-surface-container: #211F26;
    --md-surface-container-high: #2B2930;
    --md-surface-container-highest: #36343B;
    
    --md-on-surface: #E6E1E5;
    --md-on-surface-variant: #CAC4D0;
    
    --md-outline: #938F99;
    --md-outline-variant: #49454F;
    
    --md-error: #F2B8B5;
    --md-on-error: #601410;
    
    --md-success: #4CAF50;
    --md-warning: #FF9800;
    
    /* Elevation Shadows (Material Design) */
    --md-elevation-1: 0 1px 2px 0 rgba(0, 0, 0, 0.3), 0 1px 3px 1px rgba(0, 0, 0, 0.15);
    --md-elevation-2: 0 1px 2px 0 rgba(0, 0, 0, 0.3), 0 2px 6px 2px rgba(0, 0, 0, 0.15);
    --md-elevation-3: 0 1px 3px 0 rgba(0, 0, 0, 0.3), 0 4px 8px 3px rgba(0, 0, 0, 0.15);
    --md-elevation-4: 0 2px 3px 0 rgba(0, 0, 0, 0.3), 0 6px 10px 4px rgba(0, 0, 0, 0.15);
    --md-elevation-5: 0 4px 4px 0 rgba(0, 0, 0, 0.3), 0 8px 12px 6px rgba(0, 0, 0, 0.15);
    
    /* Legacy variable mapping for compatibility */
    --primary-color: var(--md-primary);
    --secondary-color: var(--md-secondary);
    --dark-bg: var(--md-surface);
    --light-bg: var(--md-surface-container-high);
    --text-primary: var(--md-on-surface);
    --text-secondary: var(--md-on-surface-variant);
    --border-color: var(--md-outline-variant);
    --error-color: var(--md-error);
    --success-color: var(--md-success);
}

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

body {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--md-surface);
    color: var(--md-on-surface);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* Header & Navigation - Material Design App Bar */
header {
    background-color: var(--md-surface-container);
    box-shadow: var(--md-elevation-2);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    min-height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.logo img {
    height: 32px;
    width: 32px;
}

.logo h1 {
    font-size: 1.375rem;
    font-weight: 500;
    letter-spacing: 0.25px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-links a {
    color: var(--md-on-surface-variant);
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 20px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 500;
    letter-spacing: 0.1px;
}

.nav-links a:hover {
    background-color: var(--md-surface-container-highest);
    color: var(--md-on-surface);
}

/* Hero Section - Material Design */
.hero {
    padding: 80px 0 96px;
    background: linear-gradient(135deg, var(--md-surface) 0%, var(--md-surface-container) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(103, 80, 164, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(125, 82, 96, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 400;
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, var(--md-primary) 0%, var(--md-tertiary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: 1.25rem;
    line-height: 1.6;
    color: var(--md-on-surface-variant);
    margin-bottom: 32px;
    font-weight: 400;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

/* Material Design 3 Buttons */
.btn {
    padding: 10px 24px;
    border-radius: 20px;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.875rem;
    letter-spacing: 0.1px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background-color: var(--md-primary);
    color: var(--md-on-primary);
    box-shadow: var(--md-elevation-2);
}

.btn-primary:hover {
    box-shadow: var(--md-elevation-3);
    transform: translateY(-1px);
}

.btn-primary:active {
    box-shadow: var(--md-elevation-1);
    transform: translateY(0);
}

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

.btn-secondary:hover {
    background-color: rgba(103, 80, 164, 0.08);
    border-color: var(--md-primary);
}

.btn[disabled] {
    opacity: 0.38;
    cursor: not-allowed;
    box-shadow: none;
}

.compatibility {
    color: var(--md-on-surface-variant);
    font-size: 0.875rem;
    font-weight: 400;
}

.hero-image img {
    width: 100%;
    border-radius: 16px;
    box-shadow: var(--md-elevation-4);
}

.demo-caption {
    text-align: center;
    margin-top: 12px;
    color: var(--md-on-surface-variant);
    font-size: 0.875rem;
    font-style: italic;
}

.feature-demo {
    width: 100%;
    margin-top: 16px;
    border-radius: 12px;
    border: 1px solid var(--md-outline-variant);
    box-shadow: var(--md-elevation-2);
}

/* Features Section - Material Design Cards */
.features {
    padding: 80px 0;
    background-color: var(--md-surface);
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 400;
    margin-bottom: 48px;
    letter-spacing: 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.feature-card {
    background-color: var(--md-surface-container-high);
    padding: 24px;
    border-radius: 16px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--md-elevation-1);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--md-elevation-3);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
    display: block;
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 12px;
    letter-spacing: 0;
    color: var(--md-on-surface);
}

.feature-card p {
    color: var(--md-on-surface-variant);
    line-height: 1.6;
    font-size: 0.875rem;
}

/* Use Cases Section - Material Design */
.use-cases {
    padding: 80px 0;
    background-color: var(--md-surface-container);
}

.use-cases h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 400;
    margin-bottom: 48px;
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.use-case {
    background-color: var(--md-surface-container-high);
    padding: 24px;
    border-radius: 16px;
    box-shadow: var(--md-elevation-1);
    transition: box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.use-case:hover {
    box-shadow: var(--md-elevation-2);
}

.use-case h3 {
    color: var(--md-primary);
    margin-bottom: 12px;
    font-weight: 500;
    font-size: 1.25rem;
}

.use-case p {
    color: var(--md-on-surface-variant);
    line-height: 1.6;
}

/* Getting Started Section - Material Design Stepper */
.getting-started {
    padding: 80px 0;
    background-color: var(--md-surface);
}

.getting-started h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 400;
    margin-bottom: 48px;
}

.install-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.step {
    background-color: var(--md-surface-container-high);
    padding: 32px 24px 24px;
    border-radius: 16px;
    box-shadow: var(--md-elevation-1);
    position: relative;
}

.step-number {
    position: absolute;
    top: -16px;
    left: 24px;
    background: linear-gradient(135deg, var(--md-primary), var(--md-tertiary));
    color: var(--md-on-primary);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 500;
    font-size: 1.125rem;
    box-shadow: var(--md-elevation-2);
}

.step h3 {
    margin: 8px 0 12px;
    font-weight: 500;
    font-size: 1.25rem;
}

.step p {
    color: var(--md-on-surface-variant);
    line-height: 1.6;
}

.code-block {
    background-color: var(--md-surface);
    padding: 16px;
    border-radius: 12px;
    margin-top: 12px;
    position: relative;
    border: 1px solid var(--md-outline-variant);
    font-family: 'Roboto Mono', 'Courier New', monospace;
}

.code-block code {
    color: var(--md-primary);
    font-family: 'Roboto Mono', 'Courier New', monospace;
    font-size: 0.875rem;
}

.copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background-color: var(--md-primary);
    color: var(--md-on-primary);
    border: none;
    padding: 6px 16px;
    border-radius: 12px;
    cursor: pointer;
    font-size: 0.75rem;
    font-weight: 500;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--md-elevation-1);
}

.copy-btn:hover {
    box-shadow: var(--md-elevation-2);
    transform: translateY(-1px);
}

/* Pricing Section - Material Design */
.pricing {
    padding: 80px 0;
    background-color: var(--md-surface-container);
}

.pricing h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 400;
    margin-bottom: 48px;
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.pricing-card {
    background-color: var(--md-surface-container-high);
    padding: 32px 24px;
    border-radius: 16px;
    text-align: center;
    position: relative;
    box-shadow: var(--md-elevation-1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.pricing-card:hover {
    box-shadow: var(--md-elevation-3);
}

.pricing-card.featured {
    background: linear-gradient(135deg, rgba(103, 80, 164, 0.1) 0%, rgba(125, 82, 96, 0.1) 100%);
    border: 2px solid var(--md-primary);
    transform: scale(1.02);
}

.pricing-card .badge {
    position: absolute;
    top: -12px;
    right: 24px;
    background-color: var(--md-tertiary);
    color: var(--md-on-tertiary);
    padding: 4px 16px;
    border-radius: 16px;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    box-shadow: var(--md-elevation-2);
}

.pricing-card h3 {
    font-size: 1.75rem;
    font-weight: 500;
    margin-bottom: 16px;
    letter-spacing: 0;
}

.price {
    font-size: 3rem;
    font-weight: 400;
    color: var(--md-primary);
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.price span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--md-on-surface-variant);
}

.features-list {
    list-style: none;
    margin-bottom: 24px;
    text-align: left;
}

.features-list li {
    padding: 8px 0;
    color: var(--md-on-surface-variant);
    font-size: 0.875rem;
    line-height: 1.5;
}

.features-list li::before {
    content: '✓';
    color: var(--md-success);
    font-weight: bold;
    margin-right: 8px;
}

/* Documentation Section - Material Design */
.documentation {
    padding: 80px 0;
    background-color: var(--md-surface);
}

.documentation h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 400;
    margin-bottom: 48px;
}

.docs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.doc-card {
    background-color: var(--md-surface-container-high);
    padding: 24px;
    border-radius: 16px;
    box-shadow: var(--md-elevation-1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.doc-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--md-elevation-3);
}

.doc-card h3 {
    margin-bottom: 12px;
    font-weight: 500;
    font-size: 1.25rem;
}

.doc-card p {
    color: var(--md-on-surface-variant);
    font-size: 0.875rem;
    line-height: 1.6;
    margin-bottom: 16px;
}

.doc-card a {
    color: var(--md-primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.875rem;
    letter-spacing: 0.1px;
    transition: color 0.2s;
}

.doc-card a:hover {
    color: var(--md-tertiary);
}

/* Install Section - Material Design */
.install-section {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--md-surface) 0%, var(--md-surface-container) 100%);
    text-align: center;
}

.install-section h2 {
    font-size: 2.5rem;
    font-weight: 400;
    margin-bottom: 16px;
}

.install-section > p {
    font-size: 1.125rem;
    color: var(--md-on-surface-variant);
    margin-bottom: 48px;
}

.install-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-top: 32px;
}

.install-option {
    background-color: var(--md-surface-container-high);
    padding: 32px 24px;
    border-radius: 16px;
    box-shadow: var(--md-elevation-1);
    transition: box-shadow 0.3s;
}

.install-option:hover {
    box-shadow: var(--md-elevation-2);
}

.install-option h3 {
    margin-bottom: 16px;
    font-weight: 500;
    font-size: 1.25rem;
}

/* Footer - Material Design */
footer {
    background-color: var(--md-surface-container);
    padding: 48px 0 24px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 32px;
    margin-bottom: 32px;
}

.footer-section h4 {
    margin-bottom: 16px;
    color: var(--md-primary);
    font-weight: 500;
    font-size: 1rem;
    letter-spacing: 0.1px;
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 8px;
}

.footer-section a {
    color: var(--md-on-surface-variant);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s;
}

.footer-section a:hover {
    color: var(--md-on-surface);
}

.footer-bottom {
    text-align: center;
    padding-top: 16px;
    padding-bottom: 8px;
    border-top: 1px solid var(--md-outline-variant);
    color: var(--md-on-surface-variant);
    font-size: 0.875rem;
    line-height: 1.4;
}

.footer-bottom p {
    margin: 4px 0;
}

/* Responsive Design - Material Breakpoints */
@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .nav-links {
        gap: 4px;
    }

    .nav-links a {
        padding: 6px 12px;
        font-size: 0.875rem;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .pricing-card.featured {
        transform: scale(1);
    }

    .features h2,
    .pricing h2,
    .documentation h2,
    .install-section h2 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 2rem;
    }

    .tagline {
        font-size: 1rem;
    }

    .container {
        padding: 0 16px;
    }

    nav .container {
        padding: 12px 16px;
    }
}