:root {
    /* Colors */
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #a5b4fc;
    --secondary-color: #1f2937;
    --accent-color: #06b6d4;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;

    /* Text Colors */
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --text-light: #ffffff;

    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-dark: #1f2937;
    --bg-code: #1e293b;

    /* Borders */
    --border-light: #e5e7eb;
    --border-medium: #d1d5db;
    --border-dark: #374151;

    /* 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-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;

    /* Spacing */
    --container-max-width: 1200px;
    --section-padding: 6rem 0;
    --header-height: 80px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

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

/* Container */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-light);
    z-index: 100;
    transition: var(--transition-normal);
}

.nav {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav__brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
}

.nav__logo {
    width: 40px;
    height: 40px;
}

.nav__title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav__menu {
    display: flex;
    align-items: center;
}

.nav__list {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
    margin: 0;
}

.nav__link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav__link:hover {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.nav__link--github {
    background: var(--text-primary);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    border-bottom: none;
}

.nav__link--github:hover {
    background: var(--primary-color);
    color: white;
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 0.25rem;
    cursor: pointer;
}

.nav__toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-fast);
}

/* Hero Section */
.hero {
    padding: calc(var(--header-height) + 4rem) 0 6rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    overflow: hidden;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><radialGradient id="a" cx="50%" cy="50%"><stop offset="0%" stop-color="%23ffffff" stop-opacity="0.1"/><stop offset="100%" stop-color="%23ffffff" stop-opacity="0"/></radialGradient></defs><circle cx="200" cy="200" r="200" fill="url(%23a)"/><circle cx="800" cy="300" r="150" fill="url(%23a)"/><circle cx="600" cy="700" r="100" fill="url(%23a)"/></svg>') no-repeat center/cover;
    opacity: 0.3;
}

.hero__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero__content {
    max-width: 500px;
}

.hero__title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.hero__title--accent {
    display: block;
    background: linear-gradient(45deg, #fbbf24, #f59e0b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__description {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.hero__buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero__visual {
    position: relative;
}

.hero__code-block {
    background: var(--bg-code);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.code-header {
    background: rgba(0, 0, 0, 0.2);
    padding: 0.75rem 1.25rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.code-lang {
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 0.375rem;
    font-size: 0.75rem;
    font-weight: 600;
}

.hero__code-block pre {
    padding: 1.5rem 1.25rem;
    margin: 0;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.7;
    color: #e2e8f0;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    background: transparent;
    color: white;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    border: 2px solid white;
    border-radius: 0.75rem;
    transition: var(--transition-normal);
    cursor: pointer;
}

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

.btn--primary:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn--secondary:hover {
    background: white;
    color: var(--primary-color);
    transform: translateY(-2px);
}

.btn--small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn--outline {
    background: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

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

/* Section Styles */
section {
    padding: var(--section-padding);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

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

/* Features Section */
.features {
    background: var(--bg-secondary);
}

.features__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 1rem;
    border: 1px solid var(--border-light);
    transition: var(--transition-normal);
    text-align: center;
}

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

.feature-card__icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
}

.feature-card__title {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.feature-card__description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Getting Started Section */
.steps {
    max-width: 800px;
    margin: 0 auto;
}

.step {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid var(--border-light);
}

.step:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.step__number {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
}

.step__content {
    flex: 1;
}

.step__title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.step__code {
    background: var(--bg-code);
    border-radius: 0.75rem;
    overflow: hidden;
}

.step__code pre {
    padding: 1.5rem;
    margin: 0;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.6;
    color: #e2e8f0;
}

.step__tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tab-btn {
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-medium);
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
}

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

.tab-content {
    display: none;
}

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

/* Examples Section */
.examples {
    background: var(--bg-secondary);
}

.examples__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.example-card {
    background: white;
    border-radius: 1rem;
    border: 1px solid var(--border-light);
    overflow: hidden;
    transition: var(--transition-normal);
}

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

.example-card__header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-light);
}

.example-card__title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.example-card__tech {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tech-tag {
    background: var(--primary-light);
    color: var(--primary-dark);
    padding: 0.25rem 0.75rem;
    border-radius: 0.375rem;
    font-size: 0.75rem;
    font-weight: 600;
}

.example-card__description {
    padding: 0 1.5rem 1.5rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.example-card__actions {
    padding: 1.5rem;
    border-top: 1px solid var(--border-light);
    display: flex;
    gap: 0.75rem;
}

/* Documentation Section */
.docs__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.doc-category {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    border: 1px solid var(--border-light);
    transition: var(--transition-normal);
}

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

.doc-category__title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.doc-category__title svg {
    color: var(--primary-color);
}

.doc-list {
    list-style: none;
}

.doc-list li {
    margin-bottom: 0.75rem;
}

.doc-list a {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.5rem 0;
    display: block;
    border-radius: 0.375rem;
    transition: var(--transition-fast);
}

.doc-list a:hover {
    color: var(--primary-color);
    background: var(--bg-secondary);
    padding-left: 0.75rem;
}

.doc-list .coming-soon {
    color: var(--text-muted);
    padding: 0.5rem 0;
    display: block;
    border-radius: 0.375rem;
    font-style: italic;
    cursor: not-allowed;
}

.doc-list .coming-soon small {
    color: var(--warning-color);
    font-weight: 500;
    font-size: 0.75rem;
}

/* Footer */
.footer {
    background: var(--bg-dark);
    color: var(--text-light);
    padding: 4rem 0 1rem;
}

.footer__content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer__brand {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer__logo {
    width: 40px;
    height: 40px;
    filter: brightness(0) invert(1);
}

.footer__title {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
}

.footer__description {
    color: #9ca3af;
    line-height: 1.6;
    max-width: 300px;
}

.footer__links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.footer__column-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: white;
    margin-bottom: 1rem;
}

.footer__list {
    list-style: none;
}

.footer__list li {
    margin-bottom: 0.5rem;
}

.footer__list a {
    color: #9ca3af;
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer__list a:hover {
    color: white;
}

.footer__bottom {
    border-top: 1px solid #374151;
    padding-top: 2rem;
}

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

.footer__copyright {
    color: #9ca3af;
    font-size: 0.875rem;
}

.footer__social {
    display: flex;
    gap: 1rem;
}

.footer__social-link {
    color: #9ca3af;
    transition: var(--transition-fast);
}

.footer__social-link:hover {
    color: white;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .nav__menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: white;
        border-bottom: 1px solid var(--border-light);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-normal);
    }

    .nav__menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav__list {
        flex-direction: column;
        padding: 2rem 1rem;
        gap: 1rem;
    }

    .nav__toggle {
        display: flex;
    }

    .hero__container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

    .hero__title {
        font-size: 2.5rem;
    }

    .hero__buttons {
        justify-content: center;
    }

    .step {
        flex-direction: column;
        gap: 1rem;
    }

    .step__number {
        align-self: flex-start;
    }

    .footer__content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer__bottom-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: calc(var(--header-height) + 2rem) 0 4rem;
    }

    .hero__title {
        font-size: 2rem;
    }

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

    .features__grid,
    .examples__grid {
        grid-template-columns: 1fr;
    }

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