:root {
    --bg-dark: #0f111a;
    --sidebar-bg: #0b0d14;
    --accent: #9d4edd;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --border: #1e293b;
    --hover: #161b22;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    display: flex;
}

/* Sidebar Fixa */
.sidebar {
    width: 280px;
    height: 100vh;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border);
    position: fixed;
    overflow-y: auto;
    padding: 2rem 1rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: white;
    margin-bottom: 2rem;
    padding-left: 1rem;
}

.logo span {
    color: var(--accent);
}

.nav-title {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1rem;
    color: var(--text-secondary);
    padding-left: 1rem;
    margin-bottom: 1rem;
}

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

.sidebar-nav a {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.2s;
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
}

.sidebar-nav a:hover {
    background-color: var(--hover);
    color: var(--accent);
}

.sidebar-nav a i {
    margin-right: 10px;
    width: 20px;
    text-align: center;
}

/* Conteúdo Principal */
.main-content {
    margin-left: 280px;
    padding: 3rem 5rem;
    max-width: 1000px;
    width: 100%;
}

.doc-section {
    padding-bottom: 4rem;
    margin-bottom: 4rem;
    border-bottom: 1px solid var(--border);
}

.doc-section:last-of-type {
    border-bottom: none;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: white;
}

h2 {
    font-size: 1.75rem;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    color: white;
}

h2 i {
    margin-right: 15px;
    color: var(--accent);
}

p {
    margin-bottom: 1.25rem;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

strong {
    color: white;
}

hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 2rem 0;
}

.lead {
    font-size: 1.25rem;
}

.action-link {
    display: inline-block;
    margin-top: 1rem;
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
    border: 1px solid var(--accent);
    padding: 0.5rem 1.2rem;
    border-radius: 5px;
    transition: 0.3s;
}

.action-link:hover {
    background-color: var(--accent);
    color: white;
}

.doc-footer {
    padding: 2rem 0;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Responsividade Básica */
@media (max-width: 900px) {
    .sidebar { width: 100%; height: auto; position: relative; }
    .main-content { margin-left: 0; padding: 2rem; }
    body { flex-direction: column; }
}