:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --border: #30363d;
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --accent: #58a6ff;
    --accent-hover: #79c0ff;
    --success: #3fb950;
    --warning: #d29922;
    --danger: #f85149;
}

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

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

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

.sidebar {
    width: 240px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    padding: 1.5rem 0;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-header { padding: 0 1.25rem 1.5rem; border-bottom: 1px solid var(--border); }
.sidebar-header h2 { font-size: 1.25rem; color: var(--accent); }
.sidebar-header .subtitle { font-size: 0.75rem; color: var(--text-secondary); }

.nav-list { list-style: none; padding: 0.5rem 0; }
.nav-list li a {
    display: block;
    padding: 0.625rem 1.25rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: all 0.15s;
}
.nav-list li a:hover, .nav-list li a.active {
    color: var(--text-primary);
    background: var(--bg-tertiary);
    border-left: 3px solid var(--accent);
}

.main-content { margin-left: 240px; flex: 1; padding: 2rem; max-width: 1200px; }

h1 { font-size: 1.5rem; margin-bottom: 1.5rem; }
h2 { font-size: 1.15rem; margin: 1.5rem 0 0.75rem; color: var(--text-secondary); }

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}
.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.stat-value { font-size: 2rem; font-weight: 700; color: var(--accent); }
.stat-label { font-size: 0.8rem; color: var(--text-secondary); margin-top: 0.25rem; }

.data-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
.data-table th {
    text-align: left;
    padding: 0.625rem 0.75rem;
    border-bottom: 2px solid var(--border);
    color: var(--text-secondary);
    font-weight: 600;
}
.data-table td { padding: 0.5rem 0.75rem; border-bottom: 1px solid var(--border); }
.data-table tr:hover td { background: var(--bg-secondary); }
.truncate { max-width: 200px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.badge {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
    background: var(--bg-tertiary);
    color: var(--accent);
    border: 1px solid var(--border);
}
.badge-success { color: var(--success); border-color: var(--success); background: rgba(63,185,80,0.1); }
.badge-warning { color: var(--warning); border-color: var(--warning); background: rgba(210,153,34,0.1); }
.badge-danger { color: var(--danger); border-color: var(--danger); background: rgba(248,81,73,0.1); }
.badge-info { color: #79c0ff; border-color: #79c0ff; background: rgba(121,192,255,0.1); }
.badge-accent { color: var(--accent); border-color: var(--accent); background: rgba(88,166,255,0.1); }

.status-active { color: var(--success); font-weight: 600; }
.status-inactive { color: var(--danger); font-weight: 600; }

.btn-sm {
    padding: 0.3rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    cursor: pointer;
    font-size: 0.8rem;
    margin: 0 0.15rem;
}
.btn-sm:hover { background: var(--border); }
.btn-sm:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-hover); }
.btn-danger { color: var(--danger); border-color: var(--danger); }
.btn-success { color: var(--success); border-color: var(--success); }

.input-sm {
    padding: 0.4rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 0.85rem;
}
.input-search { width: 300px; margin-bottom: 1rem; }
select.input-sm { appearance: auto; cursor: pointer; }

.add-form, .filter-bar {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.detail-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.25rem;
    margin-bottom: 1rem;
}
.detail-row { padding: 0.4rem 0; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
.detail-row:last-child { border-bottom: none; }

.pagination {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-top: 1rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.loading { text-align: center; padding: 3rem; color: var(--text-secondary); }

.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
    border: 1px dashed var(--border);
    border-radius: 8px;
    margin: 1rem 0;
}

code {
    background: var(--bg-tertiary);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-size: 0.85rem;
    color: var(--accent);
}

pre {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem;
    overflow-x: auto;
    font-size: 0.85rem;
    margin: 0.5rem 0;
}