:root {
    --bg-dark: #0a0e1a;
    --bg-navy: #0f172a;
    --bg-card: #1a1f35;
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-tertiary: rgba(255, 255, 255, 0.5);
    --accent-blue: #60a5fa;
    --accent-blue-dim: rgba(96, 165, 250, 0.15);
    --accent-blue-hover: #3b82f6;
    --border: rgba(255, 255, 255, 0.1);
    --success: #10b981;
    --warning: #f59e0b;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 15px;
}

a {
    color: var(--accent-blue);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--accent-blue-hover);
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    background: var(--bg-navy);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    height: 100%;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.logo img {
    height: 120px;
    width: auto;
}

.logo span {
    font-size: 20px;
    font-weight: 600;
}

nav {
    display: flex;
    gap: 2rem;
}

nav a {
    color: var(--text-secondary);
    font-size: 15px;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

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

nav a.active {
    color: var(--accent-blue);
    border-bottom-color: var(--accent-blue);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
}

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

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 14px;
}

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

.copyright {
    color: var(--text-tertiary);
    font-size: 14px;
}

/* Main Content */
main {
    margin-top: 64px;
    min-height: calc(100vh - 64px);
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

.container-wide {
    max-width: 1400px;
}

/* Home Page */

.banner {
    /* border: 1px solid var(--border); */
    padding: 0;
}

.banner img {
    width: 100%;
}

.hero {
    padding: 4rem 0 3rem;
}

.hero h1 {
    font-size: 44px;
    font-weight: 600;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.hero p {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.section {
    margin: 3rem 0;
}

.section h2 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

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

/* Project Cards */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.5rem;
    transition: all 0.3s;
}

.project-card:hover {
    /* transform: translateY(-4px); */
    border-color: var(--accent-blue);
    box-shadow: 0 8px 24px rgba(96, 165, 250, 0.15);
}

.project-card h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.project-card p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 14px;
}

.project-status {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--accent-blue-dim);
    color: var(--accent-blue);
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    margin-bottom: 1rem;
}

.project-status.active {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
}

.project-status.dev {
    background: rgba(245, 158, 11, 0.15);
    color: var(--warning);
}

.btn {
    display: inline-block;
    padding: 0.6rem 1.25rem;
    background: var(--accent-blue);
    color: var(--bg-dark);
    border-radius: 6px;
    font-weight: 500;
    font-size: 14px;
    transition: all 0.2s;
}

.btn:hover {
    background: var(--accent-blue-dim);
    /* transform: translateY(-1px); */
}

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

.btn-secondary:hover {
    border-color: var(--accent-blue);
    background: var(--accent-blue-dim);
}

/* Documentation Page */
.doc-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 3rem;
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

.sidebar {
    position: sticky;
    top: 84px;
    height: fit-content;
}

.sidebar-section {
    margin-bottom: 2rem;
}

.sidebar-section h3 {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
}

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

.sidebar-section a {
    display: block;
    padding: 0.6rem 0.75rem;
    color: var(--text-secondary);
    font-size: 14px;
    border-left: 2px solid transparent;
    transition: all 0.2s;
    border-radius: 4px;
}

.sidebar-section a:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.03);
}

.sidebar-section a.active {
    color: var(--accent-blue);
    border-left-color: var(--accent-blue);
    background: var(--accent-blue-dim);
}

.doc-content {
    max-width: 820px;
}

.doc-header {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.doc-header h1 {
    font-size: 40px;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.doc-header .subtitle {
    font-size: 18px;
    color: var(--text-secondary);
}

.doc-content h2 {
    font-size: 30px;
    font-weight: 600;
    margin-top: 3rem;
    margin-bottom: 1rem;
    padding-top: 0.5rem;
    scroll-margin-top: 80px;
}

.doc-content h3 {
    font-size: 24px;
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
    scroll-margin-top: 80px;
}

.doc-content h4 {
    font-size: 19px;
    font-weight: 600;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    scroll-margin-top: 80px;
}

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

.doc-content ul,
.doc-content ol {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

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

.doc-content code {
    background: rgba(255, 255, 255, 0.08);
    padding: 0.2em 0.4em;
    border-radius: 3px;
    font-size: 14px;
    color: var(--accent-blue);
    font-family: 'Courier New', monospace;
}

.doc-content pre {
    background: rgba(0, 0, 0, 0.3);
    padding: 1rem;
    border-radius: 6px;
    overflow-x: auto;
    margin: 1.5rem 0;
    border: 1px solid var(--border);
}

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

.doc-content a {
    border-bottom: 1px solid var(--accent-blue);
}

.doc-content a:hover {
    border-bottom-color: transparent;
}

/* Updates Page */
.updates-list {
    list-style: none;
}

.update-preview {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    transition: all 0.3s;
}

.update-preview:hover {
    /* transform: translateY(-2px); */
    border-color: var(--accent-blue);
    box-shadow: 0 4px 16px rgba(96, 165, 250, 0.1);
}

.update-date {
    font-size: 13px;
    color: var(--text-tertiary);
    margin-bottom: 0.5rem;
}

.update-preview h2 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.update-preview h2 a {
    color: var(--text-primary);
}

.update-preview h2 a:hover {
    color: var(--accent-blue);
}

.update-preview p {
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.read-more {
    color: var(--accent-blue);
    font-size: 14px;
    font-weight: 500;
}

.read-more:hover {
    text-decoration: underline;
}

/* Update Detail Page */
.update-detail {
    max-width: 800px;
}

.update-detail .update-header {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.update-detail h1 {
    font-size: 38px;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.update-detail .update-meta {
    color: var(--text-tertiary);
    font-size: 14px;
}

.update-detail .content {
    color: var(--text-secondary);
}

.update-detail .content h2 {
    font-size: 26px;
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.update-detail .content h3 {
    font-size: 20px;
    font-weight: 600;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.update-detail .content p {
    margin-bottom: 1rem;
}

.update-detail .content ul {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

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

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-blue);
    margin-top: 2rem;
    padding: 0.5rem 0;
}

.back-link:hover {
    color: var(--accent-blue-hover);
}

/* Responsive */
@media (max-width: 768px) {
    nav {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--bg-navy);
        flex-direction: column;
        padding: 1rem 2rem;
        border-bottom: 1px solid var(--border);
        gap: 0;
    }

    nav a {
        padding: 0.75rem 0;
        border-bottom: none;
        border-left: 2px solid transparent;
    }

    nav.active {
        display: flex;
    }

    .menu-toggle {
        display: block;
    }

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

    .sidebar {
        position: static;
        margin-bottom: 2rem;
    }

    .hero h1 {
        font-size: 34px;
    }

    .container {
        padding: 2rem 1.5rem;
    }

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

    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 28px;
    }

    .doc-header h1 {
        font-size: 32px;
    }
}