* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, sans-serif;
}

img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    border: 1px solid var(--border);
    margin: 2rem 0;
}

:root {
    --bg-main: #0a0a0b;
    --bg-card: #141417;
    --bg-sidebar: #0f0f12;
    --header-bg: rgba(10, 10, 11, 0.8);
    --accent: #ffffff;
    --accent-dim: rgba(255, 255, 255, 0.08);
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --border: rgba(255, 255, 255, 0.08);
    --glass: rgba(255, 255, 255, 0.03);
    --success: #10b981;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.sidebar,
header,
.card,
.callout,
.spec-item,
.api-item,
.nav-item,
.search-box,
input,
button,
i,
svg {
    transition: transform 0.2s ease,
        box-shadow 0.2s ease;
}

h1,
h2,
h3,
h4 {
    font-family: 'Outfit', sans-serif;
    letter-spacing: -0.02em;
}

/* --- Layout --- */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* --- Sidebar --- */
.sidebar {
    width: 300px;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border);
    position: fixed;
    height: 100vh;
    padding: 2rem 1.5rem;
    overflow-y: auto;
    z-index: 100;
    transition: transform 0.3s ease;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 800;
    margin-bottom: 3rem;
    color: var(--text-primary);
    text-decoration: none;
}

.brand span {
    letter-spacing: -0.05em;
    font-family: 'Outfit', sans-serif;
}

.nav-group {
    margin-bottom: 2.5rem;
}

.nav-group-title {
    font-size: 0.75rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
    padding-left: 0.5rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 12px;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.2s ease;
    margin-bottom: 0.25rem;
}

.nav-item:hover {
    background: var(--glass);
    color: var(--text-primary);
}

.nav-item.active {
    background: var(--accent-dim);
    color: var(--text-primary);
    font-weight: 600;
    box-shadow: inset 0 0 0 1px var(--border);
}

.nav-icon {
    opacity: 0.7;
}

/* --- Main Content --- */
.main-content {
    flex: 1;
    margin-left: 300px;
    padding: 0;
    width: calc(100% - 300px);
}

/* --- Header --- */
header {
    height: 80px;
    padding: 0 4rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    background: var(--header-bg);
    backdrop-filter: blur(12px);
    z-index: 90;
}

.search-box {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--glass);
    border: 1px solid var(--border);
    padding: 0.6rem 1.2rem;
    border-radius: 100px;
    width: 400px;
    color: var(--text-secondary);
    cursor: text;
    transition: all 0.2s ease;
    position: relative;
}

.search-box:hover {
    border-color: var(--text-secondary);
}

.search-hint {
    margin-left: auto;
    font-size: 0.75rem;
    background: var(--accent-dim);
    color: var(--text-primary);
    padding: 2px 8px;
    border-radius: 6px;
    opacity: 0.8;
    font-weight: 600;
}

.search-results {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    width: 100%;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    display: none;
    flex-direction: column;
    overflow: hidden;
    z-index: 1000;
}

.search-results.active {
    display: flex;
}

.search-result-item {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    transition: background 0.2s ease;
    text-decoration: none;
}

.search-result-item:last-child {
    border-bottom: none;
}

.search-result-item:hover {
    background: var(--accent-dim);
}

.search-result-title {
    display: block;
    font-weight: 700;
    color: var(--text-primary);
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
    font-family: 'Outfit', sans-serif;
}

.search-result-snippet {
    display: block;
    font-size: 0.8rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.search-no-results {
    padding: 2rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.header-actions {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}


a {
    color: var(--text-primary);
    text-decoration: underline;
    transition: color 0.2s;
}

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

.btn-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: var(--glass);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    text-decoration: none;
}

.btn-icon:hover {
    color: var(--text-primary);
    background: var(--accent-dim);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.btn-icon i {
    width: 20px;
    height: 20px;
}

.btn-primary {
    transition: transform 0.2s ease, filter 0.2s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    filter: brightness(1.1);
}

/* --- Article Section --- */
.article-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 5rem 4rem;
    animation: reveal 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes reveal {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

/* --- Breadcrumbs --- */
.breadcrumbs {
    display: flex;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-weight: 500;
}

.breadcrumb-separator {
    opacity: 0.3;
}

/* --- Spec Grid & API Lists --- */
.spec-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin: 2rem 0;
}

.spec-item {
    background: var(--glass);
    padding: 1.5rem;
    border-radius: 16px;
    border: 1px solid var(--border);
}

.spec-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.spec-value {
    font-size: 1.25rem;
    font-weight: 800;
}

.api-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin: 2rem 0;
}

.api-item {
    padding: 1rem 1.5rem;
    background: var(--glass);
    border: 1px solid var(--border);
    border-radius: 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.api-item code {
    color: var(--text-primary);
    font-weight: 700;
}

.api-item span {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

@media (max-width: 600px) {
    .spec-grid {
        grid-template-columns: 1fr;
    }

    .api-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
}


.article-header {
    margin-bottom: 4rem;
}

.article-header h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    font-weight: 950;
}

.article-lead {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* --- Typography --- */
h2 {
    font-size: 1.75rem;
    margin: 4rem 0 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    color: var(--text-secondary);
}

strong {
    color: var(--text-primary);
}

/* --- Components --- */
.callout {
    padding: 1.5rem 2rem;
    border-radius: 20px;
    background: var(--glass);
    border: 1px solid var(--border);
    margin: 2.5rem 0;
    display: flex;
    gap: 1.25rem;
}

.callout-icon {
    color: var(--text-primary);
    flex-shrink: 0;
    margin-top: 2px;
}

.callout-content b {
    display: block;
    margin-bottom: 0.5rem;
    font-family: 'Outfit', sans-serif;
    font-size: 1.1rem;
}

/* --- Grid --- */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 3rem 0;
}

.card {
    padding: 2rem;
    border-radius: 24px;
    background: var(--glass);
    border: 1px solid var(--border);
    transition: transform 0.3s ease, border-color 0.3s ease;
    cursor: pointer;
    text-decoration: none;
}

.card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 255, 255, 0.2);
}

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

.card h3 {
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
}

.card p {
    font-size: 0.95rem;
    margin-bottom: 0;
}

/* --- Code Block --- */
pre {
    background: #000;
    padding: 1.5rem;
    border-radius: 16px;
    border: 1px solid var(--border);
    overflow-x: auto;
    margin: 2rem 0;
}

code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    color: #e2e8f0;
}

/* --- Responsive --- */
.mobile-toggle {
    display: none;
    cursor: pointer;
    color: var(--text-primary);
}

@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }

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

    .mobile-toggle {
        display: block;
    }

    .main-content {
        margin-left: 0;
        width: 100%;
    }

    header {
        padding: 0 2rem;
    }

    .search-box {
        width: 250px;
    }

    .article-container {
        padding: 4rem 2rem;
    }
}

@media (max-width: 768px) {
    .article-header h1 {
        font-size: 2.5rem;
    }

    .search-box {
        display: none;
    }
}

.api-section {
    margin-bottom: 3.5rem;
}

.api-section h3 {
    font-size: 1.4rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-family: 'JetBrains Mono', monospace;
}

/* --- Hero Section --- */
.hero-section {
    text-align: left;
    padding: 2rem 0 4rem;
}

.hero-badge {
    display: inline-block;
    background: var(--accent-dim);
    color: var(--text-primary);
    padding: 0.5rem 1.25rem;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border);
}

.hero-section h1 {
    font-size: 4.5rem;
    line-height: 1.05;
    margin-bottom: 2rem;
    font-weight: 950;
    letter-spacing: -0.04em;
}

.text-gradient {
    opacity: 0.3;
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
    margin-top: 3rem;
}

.btn-primary-gradient {
    background: var(--text-primary);
    color: var(--bg-main);
    padding: 1rem 2.5rem;
    border-radius: 14px;
    text-decoration: none;
    font-weight: 800;
    font-size: 1.1rem;
    transition: transform 0.2s ease;
}

.btn-primary-gradient:hover {
    transform: translateY(-3px);
}

.btn-secondary-outline {
    background: transparent;
    color: var(--text-primary);
    padding: 1rem 2.5rem;
    border-radius: 14px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    border: 1px solid var(--border);
    transition: all 0.2s ease;
}

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

/* --- Callout Glass --- */
.callout-glass {
    background: var(--glass);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 2.5rem;
    display: flex;
    gap: 2rem;
    margin: 4rem 0;
    backdrop-filter: blur(10px);
}

/* --- Feature Showcase --- */
.feature-showcase {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin: 4rem 0;
}

.feature-card {
    padding: 2rem;
    background: var(--glass);
    border: 1px solid var(--border);
    border-radius: 24px;
    transition: all 0.3s ease;
}

.feature-card:hover {
    border-color: var(--text-secondary);
    background: var(--accent-dim);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--accent-dim);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.feature-card h3 {
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
}

.feature-card p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 0;
}

@media (max-width: 900px) {
    .feature-showcase {
        grid-template-columns: 1fr;
    }

    .hero-section h1 {
        font-size: 3rem;
    }

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