:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --text-primary: #e8e8ed;
    --text-secondary: #8b8b9a;
    --text-muted: #5a5a6a;
    --primary-blue: #00BFFF;
    --primary-purple: #8B5CF6;
    --primary-green: #10B981;
    --primary-orange: #F59E0B;
    --primary-red: #EF4444;
    --card-bg: rgba(18, 18, 26, 0.8);
    --border-color: rgba(255, 255, 255, 0.08);
    --code-bg: #1e1e2e;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    min-height: 100vh;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
}

.nav-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-logo span {
    color: var(--primary-blue);
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

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

.nav-breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.nav-breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
}

.nav-breadcrumb a:hover {
    color: var(--primary-blue);
}

/* Hero Section */
.hero {
    padding: 8rem 2rem 4rem;
    text-align: center;
    background: linear-gradient(180deg, rgba(0, 191, 255, 0.05) 0%, transparent 50%);
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 2rem;
}

.hero-badges {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.badge {
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 9999px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.badge-primary {
    background: rgba(0, 191, 255, 0.1);
    border-color: rgba(0, 191, 255, 0.3);
    color: var(--primary-blue);
}

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

/* Section */
.section {
    padding: 4rem 0;
    border-bottom: 1px solid var(--border-color);
}

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

.section-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.section-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, rgba(0, 191, 255, 0.2), rgba(139, 92, 246, 0.2));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.section-title {
    font-size: 1.75rem;
    font-weight: 700;
}

.section-description {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 2rem;
    max-width: 800px;
}

/* Cards Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    transition: border-color 0.2s, transform 0.2s;
    text-decoration: none;
    color: inherit;
    display: block;
}

.card:hover {
    border-color: rgba(0, 191, 255, 0.3);
    transform: translateY(-2px);
}

.card-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Info Card */
.info-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.info-card h4 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: var(--primary-blue);
}

.info-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Steps List */
.steps-list {
    list-style: none;
    counter-reset: step-counter;
    margin: 1.5rem 0;
}

.steps-list li {
    counter-increment: step-counter;
    padding: 1rem 0 1rem 3rem;
    position: relative;
    border-left: 2px solid var(--border-color);
    margin-left: 1rem;
}

.steps-list li::before {
    content: counter(step-counter);
    position: absolute;
    left: -1rem;
    top: 1rem;
    width: 2rem;
    height: 2rem;
    background: var(--primary-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--bg-primary);
}

.steps-list li strong {
    color: var(--text-primary);
}

/* Code Block */
.code-block {
    background: var(--code-bg);
    border-radius: 12px;
    overflow: hidden;
    margin: 1.5rem 0;
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--border-color);
}

.code-lang {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
}

.code-content {
    padding: 1.25rem;
    overflow-x: auto;
}

.code-content pre {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    line-height: 1.6;
    color: var(--text-primary);
}

/* Feature List */
.feature-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
}

.feature-list li span:first-child {
    font-size: 1.25rem;
}

/* Tags */
.tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.tag {
    padding: 0.25rem 0.75rem;
    background: rgba(0, 191, 255, 0.1);
    border: 1px solid rgba(0, 191, 255, 0.2);
    border-radius: 6px;
    font-size: 0.8rem;
    color: var(--primary-blue);
}

.tag-green {
    background: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.2);
    color: var(--primary-green);
}

.tag-purple {
    background: rgba(139, 92, 246, 0.1);
    border-color: rgba(139, 92, 246, 0.2);
    color: var(--primary-purple);
}

.tag-orange {
    background: rgba(245, 158, 11, 0.1);
    border-color: rgba(245, 158, 11, 0.2);
    color: var(--primary-orange);
}

/* Tip Box */
.tip-box {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: 12px;
    padding: 1.25rem;
    margin: 1.5rem 0;
}

.tip-box-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--primary-green);
    margin-bottom: 0.5rem;
}

.tip-box p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Warning Box */
.warning-box {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: 12px;
    padding: 1.25rem;
    margin: 1.5rem 0;
}

.warning-box-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--primary-orange);
    margin-bottom: 0.5rem;
}

.warning-box p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Table */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    background: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
}

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

.data-table th {
    background: rgba(0, 0, 0, 0.3);
    font-weight: 600;
    color: var(--text-primary);
}

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

.data-table tr:last-child td {
    border-bottom: none;
}

/* Navigation Cards */
.nav-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}

.nav-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.25rem;
    text-decoration: none;
    color: inherit;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-card:hover {
    border-color: var(--primary-blue);
    background: rgba(0, 191, 255, 0.05);
}

.nav-card-icon {
    font-size: 1.5rem;
}

.nav-card-text {
    font-weight: 500;
    color: var(--text-primary);
}

/* Footer */
footer {
    padding: 3rem 2rem;
    text-align: center;
    border-top: 1px solid var(--border-color);
    margin-top: 4rem;
}

footer p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

footer a {
    color: var(--primary-blue);
    text-decoration: none;
}

/* Page Navigation */
.page-nav {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.page-nav a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    text-decoration: none;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.page-nav a:hover {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }

    .nav-links {
        display: none;
    }

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

    .code-content pre {
        font-size: 0.75rem;
    }

    .page-nav {
        flex-direction: column;
    }
}

/* Language Toggle Styles */
.lang-toggle {
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
    margin-left: 1rem;
}

.lang-toggle:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary-blue);
}

.lang-toggle .flag-icon {
    font-size: 1.25rem;
    line-height: 1;
}

.lang-toggle-text {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Flag icons integration */
@import url('https://cdn.jsdelivr.net/gh/lipis/flag-icons@6.6.6/css/flag-icons.min.css');