/* ===== CSS Variables ===== */
:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;
    --bg-dark: #0f172a;
    --bg-darker: #020617;
    --bg-card: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
}

/* ===== Global Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    margin-bottom: 1rem;
    font-weight: 600;
    line-height: 1.2;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* ===== Navigation Bar ===== */
.navbar {
    background: var(--bg-darker);
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

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

.brand-name {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.3s ease;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text-primary);
    border-bottom-color: var(--primary-color);
}

/* ===== Hero Section ===== */
.hero {
    padding: 8rem 0 6rem;
    background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-dark) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(99, 102, 241, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 4.5rem;
    margin-bottom: 1rem;
    font-weight: 800;
}

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

.hero-subtitle {
    font-size: 1.75rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 2.5rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 4rem;
}

.hero-stats {
    display: flex;
    gap: 4rem;
    justify-content: center;
    margin-top: 3rem;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(99, 102, 241, 0.3);
}

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

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

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

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

.btn-large {
    padding: 1rem 3rem;
    font-size: 1.125rem;
}

/* ===== Features Section ===== */
.features-preview {
    padding: 6rem 0;
    background: var(--bg-dark);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.feature-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.2);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.cta-center {
    text-align: center;
    margin-top: 3rem;
}

/* ===== Screenshots ===== */
.screenshots {
    padding: 6rem 0;
    background: var(--bg-darker);
}

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

.screenshot {
    width: 100%;
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease;
}

.screenshot:hover {
    transform: scale(1.05);
}

/* ===== CTA Section ===== */
.cta-section {
    padding: 6rem 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    text-align: center;
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-section p {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.9);
}

.platform-note {
    margin-top: 1rem;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
}

/* ===== Footer ===== */
.footer {
    background: var(--bg-darker);
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h3, .footer-section h4 {
    margin-bottom: 1rem;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: var(--text-muted);
    transition: color 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
}

/* ===== Page Header ===== */
.page-header {
    padding: 4rem 0;
    background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-dark) 100%);
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

/* ===== Features Detail Page ===== */
.features-detail {
    padding: 4rem 0;
}

.feature-category {
    margin-bottom: 4rem;
}

.category-title {
    font-size: 2rem;
    margin-bottom: 2rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--primary-color);
}

.feature-list {
    display: grid;
    gap: 2rem;
}

.feature-item {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 0.75rem;
    border: 1px solid var(--border-color);
}

.feature-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.feature-item ul {
    margin-left: 1.5rem;
    color: var(--text-secondary);
}

.feature-item li {
    margin-bottom: 0.5rem;
}

/* ===== Documentation Layout ===== */
.docs-layout {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 3rem;
    padding: 3rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.docs-sidebar {
    position: sticky;
    top: 80px;
    height: fit-content;
}

.sidebar-content h3 {
    color: var(--text-primary);
    font-size: 1rem;
    margin: 1.5rem 0 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.sidebar-content h3:first-child {
    margin-top: 0;
}

.sidebar-content ul {
    list-style: none;
    margin-bottom: 1.5rem;
}

.sidebar-content ul li {
    margin-bottom: 0.5rem;
}

.sidebar-content a {
    color: var(--text-muted);
    display: block;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    transition: all 0.2s ease;
}

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

.docs-content {
    max-width: 900px;
}

.doc-section {
    margin-bottom: 4rem;
}

.doc-section h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.doc-section h3 {
    font-size: 1.5rem;
    margin: 2rem 0 1rem;
}

.doc-section h4 {
    font-size: 1.25rem;
    margin: 1.5rem 0 0.75rem;
}

.lead {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* ===== Code Blocks ===== */
.code-block {
    background: var(--bg-darker);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin: 1.5rem 0;
}

.code-block h4 {
    margin-top: 0;
    color: var(--primary-color);
}

pre {
    background: var(--bg-darker);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1rem;
    overflow-x: auto;
    margin: 1rem 0;
}

code {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

:not(pre) > code {
    background: var(--bg-card);
    padding: 0.2rem 0.4rem;
    border-radius: 0.25rem;
    color: var(--accent-color);
}

/* ===== Tables ===== */
.shortcuts-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    background: var(--bg-card);
    border-radius: 0.5rem;
    overflow: hidden;
}

.shortcuts-table thead {
    background: var(--bg-darker);
}

.shortcuts-table th,
.shortcuts-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.shortcuts-table th {
    color: var(--text-primary);
    font-weight: 600;
}

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

.shortcuts-table tbody tr:hover {
    background: var(--bg-dark);
}

/* ===== Keyboard Keys ===== */
kbd {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 0.25rem;
    padding: 0.2rem 0.5rem;
    font-family: monospace;
    font-size: 0.875rem;
    color: var(--text-primary);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* ===== FAQ Items ===== */
.faq-item {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    margin-bottom: 1rem;
}

.faq-item h4 {
    margin: 0 0 0.75rem;
    color: var(--primary-color);
}

.faq-item p {
    margin: 0;
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }

    .nav-links {
        gap: 1rem;
        font-size: 0.9rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

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

    .hero-stats {
        flex-direction: column;
        gap: 2rem;
    }

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

    .docs-layout {
        grid-template-columns: 1fr;
    }

    .docs-sidebar {
        position: static;
    }

    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }
}

/* ===== Download Page ===== */
.download-section {
    padding: 4rem 0;
}

.download-hero {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
    padding: 3rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
}

.download-icon {
    font-size: 5rem;
    margin-bottom: 1.5rem;
}

.download-hero h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.download-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.download-hero .btn {
    display: inline-flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1.5rem 3rem;
}

.download-hero .btn span {
    font-size: 1.25rem;
    font-weight: 700;
}

.download-hero .btn small {
    font-size: 0.875rem;
    font-weight: 400;
    opacity: 0.9;
}

.version-info {
    margin-top: 1.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.platform-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.platform-info-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
}

.platform-info-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.platform-info-card .platform-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.platform-info-card h3 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.platform-info-card p {
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.file-type {
    font-size: 0.875rem;
    font-weight: 600;
}

.file-type a {
    color: var(--primary-color);
}

.install-guide {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 3rem;
}

.install-guide h3 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.install-steps {
    display: grid;
    gap: 2rem;
}

.install-step {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}

.step-number {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content h4 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.step-content p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.platform-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 3rem;
    margin-bottom: 3rem;
}

.platform-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.platform-icon {
    font-size: 3rem;
}

.platform-description {
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.download-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.download-option {
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 2rem;
}

.download-option h3 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.download-option p {
    margin-bottom: 1.5rem;
}

.file-info {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 0.75rem;
}

.install-instructions {
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 2rem;
    margin-top: 2rem;
}

.install-instructions h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.install-instructions ol {
    margin-left: 1.5rem;
    color: var(--text-secondary);
}

.install-instructions li {
    margin-bottom: 0.5rem;
}

.platform-note {
    text-align: center;
    padding: 1rem;
    background: var(--bg-dark);
    border-radius: 0.5rem;
    margin-top: 1rem;
}

.code-snippet {
    background: var(--bg-darker);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1rem;
    margin: 1rem 0;
}

.code-snippet pre {
    margin: 0;
    border: none;
    background: transparent;
}

/* Requirements Section */
.requirements-section {
    padding: 4rem 0;
    background: var(--bg-darker);
}

.requirements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.requirement-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 2rem;
}

.requirement-card h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.requirement-card ul {
    list-style: none;
}

.requirement-card li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.requirement-card li:last-child {
    border-bottom: none;
}

/* Alternative Methods */
.alternative-methods {
    padding: 4rem 0;
}

.methods-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 2rem;
}

.method-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 2rem;
}

.method-card h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.method-card p {
    margin-bottom: 1.5rem;
}

/* Release Notes */
.release-notes {
    padding: 4rem 0;
    background: var(--bg-darker);
}

.release-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 2rem;
}

.release-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.release-content h4 {
    color: var(--primary-color);
    margin: 1.5rem 0 1rem;
}

.release-content ul {
    margin-left: 1.5rem;
    color: var(--text-secondary);
}

.release-content li {
    margin-bottom: 0.5rem;
}

/* Support Section */
.support-section {
    padding: 4rem 0;
}

.support-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.support-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
}

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

.support-card h3 {
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.support-card p {
    margin-bottom: 1.5rem;
    color: var(--text-muted);
}

.support-card a {
    color: var(--primary-color);
    font-weight: 600;
}

/* ===== Utilities ===== */
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }