:root {
    --bg: #0d1117;
    --card: #161b22;
    --border: #30363d;
    --text: #c9d1d9;
    --text-muted: #8b949e;
    --accent: #58a6ff;
    --green: #3fb950;
    --red: #f85149;
    --orange: #d29922;
}

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

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

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: var(--card);
    border-bottom: 1px solid var(--border);
}

.logo {
    font-weight: bold;
    font-size: 1.2rem;
    color: var(--accent);
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.nav-links a {
    color: var(--text);
    text-decoration: none;
}

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

.user {
    color: var(--green);
    font-weight: bold;
}

.btn-login, .btn-primary {
    background: var(--accent);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    text-decoration: none;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary:hover { opacity: 0.9; }

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.hero {
    text-align: center;
    padding: 4rem 2rem;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--accent);
}

.hero p {
    color: var(--text-muted);
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

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

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.5rem;
}

.card h3 {
    margin-bottom: 1rem;
    color: var(--accent);
}

.card ul {
    list-style: none;
}

.card li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
}

.card li:last-child { border: none; }

.card a {
    color: var(--text);
    text-decoration: none;
}

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

/* Wiki */
.wiki-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}

.wiki-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem;
}

.wiki-card a {
    text-decoration: none;
    color: inherit;
}

.wiki-card h3 {
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.tags {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Wiki Page */
.wiki-page {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 2rem;
}

.sidebar {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem;
    height: fit-content;
    position: sticky;
    top: 2rem;
}

.sidebar h3 {
    color: var(--accent);
    margin-bottom: 1rem;
}

.sidebar ul {
    list-style: none;
}

.sidebar li {
    padding: 0.3rem 0;
}

.sidebar a {
    color: var(--text);
    text-decoration: none;
    font-size: 0.9rem;
}

.sidebar a:hover, .sidebar a.active {
    color: var(--accent);
}

.content {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 2rem;
}

.content h1, .content h2, .content h3 {
    color: var(--accent);
    margin: 1.5rem 0 0.5rem;
}

.content h1 { font-size: 2rem; }
.content h2 { font-size: 1.5rem; }
.content h3 { font-size: 1.2rem; }

.content p {
    margin: 0.5rem 0;
}

.content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

.content th, .content td {
    padding: 0.5rem;
    border: 1px solid var(--border);
    text-align: left;
}

.content th {
    background: var(--bg);
    color: var(--accent);
}

.content a {
    color: var(--accent);
}

/* Profile */
.profile .card {
    max-width: 600px;
    margin-bottom: 1.5rem;
}

.profile form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.profile label {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    color: var(--text-muted);
}

.profile input {
    padding: 0.5rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
    font-size: 1rem;
}

.profile table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.profile th, .profile td {
    padding: 0.5rem;
    border: 1px solid var(--border);
    text-align: left;
}

.profile th {
    background: var(--bg);
    color: var(--accent);
}

/* Responsive */
@media (max-width: 768px) {
    .wiki-page {
        grid-template-columns: 1fr;
    }
    .sidebar {
        position: static;
    }
    .hero h1 {
        font-size: 2rem;
    }
}