@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    --bg-main: #0e1117;
    --bg-sidebar: #0d1117;
    --text-main: #c9d1d9;
    --text-muted: #8b949e;
    --accent-blue: #58a6ff;
    --border-color: #30363d;
    --code-bg: #161b22;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    display: flex;
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-main);
}

::-webkit-scrollbar-thumb {
    background: #30363d;
    border-radius: 4px;
}

/* Sidebar */
.sidebar {
    width: 280px;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    position: fixed;
    height: 100vh;
    padding: 1.5rem;
    overflow-y: auto;
    z-index: 200;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.1rem;
    color: #fff;
    margin-bottom: 2rem;
}

.brand-icon {
    width: 24px;
    height: 24px;
    background: var(--accent-blue);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 0.9rem;
}

.nav-section-title {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
    color: var(--text-muted);
    margin: 1.5rem 0 0.5rem 0;
}

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

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    display: block;
    padding: 6px 10px;
    border-radius: 6px;
    transition: all 0.2s;
    margin-bottom: 2px;
}

.nav-links a:hover,
.nav-links a.active {
    background: rgba(255, 255, 255, 0.05);
    color: var(--accent-blue);
}

/* Main Content area */
.content-wrapper {
    margin-left: 280px;
    padding: 3rem 4rem;
    max-width: 850px;
    width: 100%;
}

.banner-img {
    width: 100%;
    border-radius: 12px;
    margin: 2rem 0;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border-color);
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #fff;
    margin-top: 3rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

h3 {
    font-size: 1.1rem;
    color: #fff;
    margin-top: 2rem;
    margin-bottom: 0.5rem;
}

p {
    font-size: 1rem;
    color: var(--text-main);
    margin-bottom: 1.2rem;
    line-height: 1.7;
}

ul {
    margin-left: 1.5rem;
    margin-bottom: 1.5rem;
}

li {
    margin-bottom: 0.5rem;
    color: var(--text-main);
}

li code {
    background: var(--code-bg);
    padding: 0.1rem 0.3rem;
    border-radius: 4px;
    font-family: monospace;
    border: 1px solid var(--border-color);
    color: #a5d6ff;
}

/* Code Blocks */
.code-container {
    background: var(--code-bg);
    border-radius: 8px;
    padding: 1.25rem;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
    overflow-x: auto;
}

pre {
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    font-size: 0.9rem;
    color: #e6edf3;
}

code .keyword {
    color: #ff7b72;
}

code .builtin {
    color: #d2a8ff;
}

code .string {
    color: #a5d6ff;
}

code .number {
    color: #79c0ff;
}

code .comment {
    color: #8b949e;
}

code .operator {
    color: #c9d1d9;
}

.badge {
    display: inline-block;
    padding: 2px 8px;
    background: #238636;
    color: #fff;
    border-radius: 2em;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 1rem;
}