:root {
    --bg-color: #ffffff;
    --text-primary: #1F2328;
    --text-secondary: #656D76;
    --border-color: #D0D7DE;
    --sidebar-bg: #ffffff;
    --sidebar-border: #D0D7DE;
    --primary-btn-bg: #24292F;
    --primary-btn-text: #ffffff;
    --secondary-btn-bg: #ffffff;
    --secondary-btn-text: #24292F;
    --card-bg: #ffffff;
    --search-bg: #F6F8FA;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

/* Dark mode variables for later */
[data-theme="dark"] {
    --bg-color: #0d1117;
    --text-primary: #e6edf3;
    --text-secondary: #7d8590;
    --border-color: #30363d;
    --sidebar-bg: #0d1117;
    --sidebar-border: #30363d;
    --primary-btn-bg: #238636;
    --primary-btn-text: #ffffff;
    --secondary-btn-bg: #21262d;
    --secondary-btn-text: #c9d1d9;
    --card-bg: #161b22;
    --search-bg: #010409;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.5;
    transition: background-color 0.3s, color 0.3s;
}

a {
    text-decoration: none;
    color: #0969da;
}

.layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--sidebar-border);
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    z-index: 100;
}

.sidebar-header {
    padding: 20px 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    font-size: 16px;
    border-bottom: 1px solid transparent;
}

.logo-small {
    width: 24px;
    height: 24px;
}

.sidebar-nav {
    padding: 16px 0;
}

.nav-category {
    font-size: 12px;
    text-transform: uppercase;
    color: var(--text-secondary);
    padding: 16px 24px 8px;
    letter-spacing: 0.5px;
}

.nav-group {
    list-style: none;
}

.nav-group li a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 24px;
    color: var(--text-secondary);
    font-size: 14px;
    transition: color 0.2s;
}

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

.nav-group li a i {
    font-size: 14px;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 260px;
    display: flex;
    flex-direction: column;
}

/* Header */
.top-header {
    height: 64px;
    border-bottom: 1px solid var(--sidebar-border);
    display: flex;
    align-items: center;
    justify-content: start;
    padding: 0 24px;
    position: sticky;
    top: 0;
    background-color: var(--bg-color);
    z-index: 90;
}

.menu-toggle {
    display: none;
    cursor: pointer;
    font-size: 20px;
    color: var(--text-secondary);
    position: absolute;
    left: 24px;
}

.search-bar {
    display: flex;
    align-items: center;
    background-color: var(--search-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 8px 16px;
    width: 100%;
    max-width: 300px;
}

.search-icon {
    color: var(--text-secondary);
    margin-right: 12px;
    font-size: 14px;
}

.search-bar input {
    border: none;
    background: transparent;
    outline: none;
    width: 100%;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 15px;
}

.theme-toggle {
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 18px;
}

/* Content Container */
.content-container {
    display: flex;
    justify-content: center;
    max-width: 100%;
    margin: 0 auto;
    padding-top: 60px;
    padding-right: 100px;
    padding-left: 50px;
}

.content-inner {
    width: 100%;
    max-width: 1100px;
}

/* Hero Section */
.text-center {
    text-align: center;
}

.hero-section {
    padding-bottom: 140px;
}

.hero-image {
    width: 180px;
    height: 180px;
    margin-bottom: 5px;
    /* Soft glow effect mimicking the 3D globe in design */
    filter: drop-shadow(0 10px 40px rgba(0, 82, 204, 0.3));
}

.hero-title {
    font-size: 32px;
    font-weight: 600;
    letter-spacing: -1px;
    margin-bottom: 2px;
    color: #111;
}

.hero-subtitle {
    font-size: 17px;
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 35px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.5;
}

.action-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
}

.btn {
    padding: 10px 35px;
    border-radius: 6px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s;
}

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

.btn-primary:hover {
    opacity: 0.9;
    color: var(--primary-btn-text);
}

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

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

/* Cards Section */
.feature-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-bottom: 64px;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 32px;
    transition: box-shadow 0.2s;
}

.card:hover {
    box-shadow: 0 8px 24px rgba(140, 149, 159, 0.15);
}

[data-theme="dark"] .card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}

.card-icon {
    font-size: 20px;
    margin-bottom: 16px;
    display: block;
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
}

.card-desc {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 20px;
}

.card-link {
    font-size: 14px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

/* Documentation Sections */
.doc-section {
    margin-bottom: 48px;
}

.doc-section h2 {
    font-size: 28px;
    font-weight: 600;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
    margin-bottom: 24px;
    margin-top: 56px;
    color: #111;
    letter-spacing: -0.5px;
}

.doc-section h3 {
    font-size: 22px;
    font-weight: 500;
    margin-top: 32px;
    margin-bottom: 16px;
    color: #222;
}

.doc-section p {
    margin-bottom: 20px;
    color: #444;
    font-size: 15px;
    line-height: 1.6;
}

.doc-section ul {
    margin-bottom: 16px;
    padding-left: 24px;
}

.doc-section li {
    margin-bottom: 8px;
}

.doc-section ul li {
    margin-bottom: 12px;
    padding-left: 20px;
    position: relative;
    line-height: 1.5;
    color: #444;
}

.doc-section ul li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 9px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--text-secondary);
}

.lib-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background-color: #f1f8ff;
    color: #0366d6;
    padding: 2px 8px;
    border-radius: 4px;
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    margin-left: 8px;
    border: 1px solid #c8e1ff;
    transition: all 0.2s ease;
}

.lib-link:hover {
    background-color: #def;
    border-color: #79b8ff;
}

.code-block {
    background-color: var(--search-bg);
    border-radius: 6px;
    padding: 16px;
    overflow-x: auto;
    margin-bottom: 24px;
    border: 1px solid var(--border-color);
}

.code-block pre {
    margin: 0;
}

.code-block code {
    font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
    font-size: 14px;
}

/* Inline code */
p code,
li code {
    background-color: var(--search-bg);
    padding: 3px 6px;
    border-radius: 4px;
    font-size: 0.9em;
    font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}

footer {
    padding: 40px 24px;
    text-align: center;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 14px;
    margin-top: auto;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .menu-toggle {
        display: block;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-image {
        width: 140px;
        height: 140px;
    }
}