* {
    box-sizing: border-box;
}

:root {
    /* Colors - Modern Dark Theme (VS Code inspired) */
    --bg-primary: #111111;
    --bg-secondary: #1e1e1e;
    --bg-tertiary: #2d2d2d;
    --bg-header: #1e1e1e;
    --bg-input: #3c3c3c;
    --bg-hover: #2a2d2e;
    --bg-active: #37373d;

    --text-primary: #cccccc;
    --text-secondary: #969696;
    --text-muted: #6e6e6e;
    --text-inverse: #ffffff;

    --accent-color: #007fd4;
    --accent-hover: #026ec1;
    --danger-color: #f14c4c;
    --success-color: #4caf50;
    --warning-color: #cca700;

    --border-color: #3e3e42;

    --windows-color: #007fd4;
    --windows-hover: #026ec1;
    --pypi-color: #cca700;
    --pypi-hover: #b99700;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 64px;

    /* Layout */
    --container-width: 1248px;
    --header-height: 70px;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);
}

body,
html {
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    scroll-behavior: smooth;
}

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

ul {
    list-style: none;
    padding: 0;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Navbar */
.navbar {
    height: var(--header-height);
    background: rgba(30, 30, 30, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: 1.2em;
    color: var(--text-inverse);
}

.logo img {
    height: 32px;
}

.nav-links {
    display: flex;
    gap: var(--spacing-lg);
}

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

.nav-links a:hover,
.nav-links a.active {
    color: var(--accent-color);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5em;
    cursor: pointer;
}

/* Hero Section */
.hero {
    padding: 80px 0 60px;
    text-align: center;
    background: radial-gradient(circle at top center, #2d2d30 0%, var(--bg-primary) 70%);
}

.hero-title {
    font-size: 3.5em;
    font-weight: 800;
    margin: 0 0 var(--spacing-md);
    background: linear-gradient(135deg, var(--text-inverse) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -1px;
}

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

.hero-actions {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xxl);
    width: 100%;
}

.secondary-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    justify-content: center;
}

.pip-install {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 8px 16px;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-family: 'Consolas', monospace;
    color: var(--text-primary);
}

.copy-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    transition: color 0.2s;
}

.copy-btn:hover {
    color: var(--text-inverse);
}

.small-text {
    font-size: 0.9em;
    color: var(--text-muted);
    margin-top: -10px;
}

.small-text code {
    background: var(--bg-tertiary);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--text-primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all 0.2s ease;
    cursor: pointer;
    border: 1px solid transparent;
}

.btn-lg {
    padding: 14px 32px;
    font-size: 1.1em;
}

.btn-primary {
    background: var(--accent-color);
    color: white;
    box-shadow: 0 4px 12px rgba(0, 127, 212, 0.3);
    justify-content: center;
}

.hero-actions>.btn-primary {
    width: 22em;
    max-width: 100%;
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 127, 212, 0.4);
}

.btn-windows {
    background: var(--windows-color);
    box-shadow: 0 4px 12px rgba(0, 127, 212, 0.3);
}

.btn-windows:hover {
    background: var(--windows-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 127, 212, 0.4);
}

.btn-pypi {
    background: var(--pypi-color);
    box-shadow: 0 4px 12px rgba(170, 161, 32, 0.3);
}

.btn-pypi:hover {
    background: var(--pypi-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(170, 161, 32, 0.4);
}

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

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

/* Hero Image */
.hero-image {
    margin-top: var(--spacing-xl);
    position: relative;
}

.hero-image img {
    max-width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

/* Features Section */
.features {
    padding: var(--spacing-xxl) 0;
    background: var(--bg-secondary);
}

.section-title {
    text-align: center;
    font-size: 2.5em;
    margin-bottom: var(--spacing-xxl);
    color: var(--text-inverse);
}

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

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

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
}

.icon-wrapper {
    width: 50px;
    height: 50px;
    background: rgba(0, 127, 212, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    color: var(--accent-color);
    font-size: 1.5em;
}

.feature-card h3 {
    margin: 0 0 var(--spacing-sm);
    color: var(--text-inverse);
    font-size: 1.25em;
}

.feature-card p {
    color: var(--text-secondary);
    margin: 0;
}

/* CTA Section */
.cta-section {
    padding: 80px 0;
    text-align: center;
    background: linear-gradient(to bottom, var(--bg-primary), var(--bg-secondary));
}

.cta-section h2 {
    font-size: 2.5em;
    margin-bottom: var(--spacing-md);
    color: var(--text-inverse);
}

.cta-section p {
    color: var(--text-secondary);
    font-size: 1.2em;
    margin-bottom: var(--spacing-xl);
}

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

/* Footer */
footer {
    background: var(--bg-header);
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--border-color);
}

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

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

.footer-logo img {
    height: 24px;
    opacity: 0.8;
}

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

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

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

.footer-bottom {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9em;
    border-top: 1px solid var(--border-color);
    padding-top: var(--spacing-lg);
}

/* Responsive */
@media (max-width: 768px) {
    .navbar .container {
        position: relative;
    }

    .mobile-menu-btn {
        display: block;
    }

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

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

    .hero-title {
        font-size: 1.75em;
        padding: 0 var(--spacing-md);
    }

    .hero-subtitle {
        padding: 0 var(--spacing-md);
        font-size: 0.8em;
    }

    .hero-actions {
        flex-direction: column;
        width: auto;
        padding: 0 var(--spacing-md);
    }

    .hero-actions>.btn-primary {
        width: 100%;
    }

    .section-title {
        font-size: 1.75em;
    }

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

    .cta-section h2 {
        font-size: 1.5em;
        padding: 0 var(--spacing-md);
    }

    .cta-section p {
        font-size: 1em;
        padding: 0 var(--spacing-md);
    }

    .cta-buttons {
        flex-direction: column;
        padding: 0 var(--spacing-md);
    }

    .cta-buttons .btn {
        width: 100%;
        justify-content: center;
        box-sizing: border-box;
    }

    .btn-lg {
        padding: 10px 20px;
        font-size: 0.9em;
    }

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

    /* Docs Responsive */
    .docs-layout {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        height: auto;
        position: static;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding: var(--spacing-md);
        display: none;
        /* Hidden by default on mobile */
    }

    .sidebar.active {
        display: block;
    }

    .docs-content {
        padding: 0 !important;
    }

    .docs-card {
        padding: var(--spacing-md);
        border-radius: 0 !important;
        border-left: none;
        border-right: none;
        margin-bottom: 0;
    }

    .docs-content h1 {
        font-size: 1.75em;
    }

    .docs-content h2 {
        font-size: 1.5em;
    }

    .docs-content pre {
        font-size: 0.85em;
    }

    .docs-mobile-toggle {
        display: flex;
        align-items: center;
        gap: 8px;
        padding: var(--spacing-md);
        background: var(--bg-secondary);
        border-bottom: 1px solid var(--border-color);
        color: var(--text-primary);
        cursor: pointer;
        width: 100%;
        border: none;
        font-weight: 600;
    }
}

/* Documentation Styles */
.docs-layout {
    display: flex;
    min-height: calc(100vh - var(--header-height));
}

.sidebar {
    width: 250px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    position: sticky;
    top: var(--header-height);
    height: calc(100vh - var(--header-height));
    overflow-y: auto;
    flex-shrink: 0;
}

.sidebar h3 {
    font-size: 0.85em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
    letter-spacing: 1px;
}

.sidebar ul li {
    margin-bottom: var(--spacing-sm);
}

.sidebar a {
    display: block;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
}

.sidebar a:hover,
.sidebar a.active {
    background: var(--bg-hover);
    color: var(--text-inverse);
}

.docs-content {
    flex-grow: 1;
    padding: var(--spacing-lg);
    max-width: 1200px;
}

.docs-content h1 {
    font-size: 2.5em;
    margin-bottom: var(--spacing-lg);
    color: var(--text-inverse);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: var(--spacing-md);
}

.docs-content h2 {
    font-size: 1.8em;
    margin-top: var(--spacing-xxl);
    margin-bottom: var(--spacing-md);
    color: var(--text-inverse);
}

.docs-content h3 {
    font-size: 1.4em;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.docs-content p {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.docs-content code {
    background: var(--bg-tertiary);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Consolas', monospace;
    font-size: 0.9em;
    color: #ce9178;
    /* VS Code string colorish */
}

.docs-content pre {
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    overflow-x: auto;
    border: 1px solid var(--border-color);
    margin-bottom: var(--spacing-lg);
}

.docs-content pre code {
    background: none;
    padding: 0;
    color: var(--text-primary);
    display: block;
}

.note {
    background: rgba(0, 127, 212, 0.1);
    border-left: 4px solid var(--accent-color);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-lg);
}

.note p {
    margin: 0;
}

/* CLI Badge */
.cli-badge {
    display: inline-block;
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    font-size: 0.7em;
    padding: 2px 6px;
    border-radius: 4px;
    vertical-align: middle;
    margin-left: 8px;
    border: 1px solid var(--border-color);
    font-weight: 600;
}

/* CLI Section */
.cli-section {
    background-color: rgba(0, 127, 212, 0.08);
    border: 1px solid rgba(0, 127, 212, 0.2);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.cli-section::before {
    content: none;
}

.cli-toggle {
    background: none;
    border: none;
    color: var(--accent-color);
    cursor: pointer;
    font-weight: 600;
    padding: 0;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95em;
    width: 100%;
    text-align: left;
}

.cli-toggle:hover {
    color: var(--accent-hover);
}

.cli-toggle i {
    transition: transform 0.2s;
}

.cli-section.expanded .cli-toggle i {
    transform: rotate(180deg);
}

.cli-content {
    display: none;
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

.cli-section.expanded .cli-content {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Docs Card */
.docs-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding-top: var(--spacing-xl);
    padding-left: var(--spacing-xl);
    padding-right: var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.docs-card h1:first-child,
.docs-card h2:first-child {
    margin-top: 0;
}

/* Subsection Divider */
.docs-card section:not(:last-child) {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.docs-card h2 {
    margin-top: 0;
}

/* Sub-subsection (h4) */
.sub-section {
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--border-color);
    border-left: 3px solid var(--accent-color);
    border-radius: var(--radius-sm);
    padding: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.sub-section h3,
.sub-section h4 {
    margin-top: 0;
    margin-bottom: var(--spacing-sm);
    color: var(--text-inverse);
    font-size: 1.1em;
}

/* Code Copy Button */
.code-wrapper {
    position: relative;
}

.copy-code-btn {
    position: absolute;
    top: 5px;
    right: 5px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    padding: 4px 8px;
    font-size: 0.8em;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s;
}

.code-wrapper:hover .copy-code-btn {
    opacity: 1;
}

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

.inline-links {
    display: flex;
    flex-direction: row;
    justify-content: center;
    gap: 1em;
    padding-top: 0;
}

.card-preview {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-md);
}

.card-preview img {
    width: 200px;
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}