body { font-family: system-ui, sans-serif; margin: 0; padding: 1rem; }
header { background: #222; color: #fff; padding: 1rem; }
main { padding: 1rem; }

/* ============================================================
   main/settings.html — .main-settings-page
   ============================================================ */
.main-settings-page .settings-nav-tabs .nav-link {
    color: #6c757d;
    border: none;
    border-bottom: 3px solid transparent;
    font-weight: 500;
    padding: 12px 20px;
}
.main-settings-page .settings-nav-tabs .nav-link:hover {
    color: #0d6efd;
    border-bottom-color: #e9ecef;
}
.main-settings-page .settings-nav-tabs .nav-link.active {
    color: #0d6efd;
    border-bottom-color: #0d6efd;
    background-color: transparent;
}
.main-settings-page .setting-item {
    padding: 20px;
    border-bottom: 1px solid #e9ecef;
}
.main-settings-page .setting-item:last-child {
    border-bottom: none;
}
.main-settings-page .setting-label {
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 5px;
}
.main-settings-page .setting-description {
    font-size: 0.875rem;
    color: #6c757d;
    margin-bottom: 10px;
}
.main-settings-page .setting-value {
    max-width: 500px;
}
.main-settings-page .category-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    margin-right: 15px;
    font-size: 1.2rem;
}

/* ============================================================
   main/system_logs.html — .main-system-logs-page
   ============================================================ */
.main-system-logs-page {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}
.main-system-logs-page .logs-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px;
    border-radius: 15px;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
}
.main-system-logs-page .logs-header h1 {
    margin: 0;
    font-size: 2rem;
    font-weight: 700;
}
.main-system-logs-page .logs-header p {
    margin: 10px 0 0 0;
    opacity: 0.9;
    font-size: 1rem;
}
.main-system-logs-page .logs-controls {
    background: white;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    align-items: center;
}
.main-system-logs-page .logs-search {
    flex: 1;
    min-width: 250px;
}
.main-system-logs-page .logs-search input {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    font-size: 0.95rem;
}
.main-system-logs-page .logs-filter {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}
.main-system-logs-page .filter-btn {
    padding: 8px 16px;
    border: 1px solid #e0e0e0;
    background: white;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
}
.main-system-logs-page .filter-btn:hover {
    background: #f5f5f5;
}
.main-system-logs-page .filter-btn.active {
    background: #667eea;
    color: white;
    border-color: #667eea;
}
.main-system-logs-page .logs-card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    overflow: hidden;
}
.main-system-logs-page .logs-card-header {
    background: #f8f9fa;
    padding: 15px 20px;
    border-bottom: 1px solid #e0e0e0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.main-system-logs-page .logs-card-title {
    font-weight: 600;
    color: #2c3e50;
    font-size: 1.1rem;
}
.main-system-logs-page .logs-count {
    background: #667eea;
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}
.main-system-logs-page .logs-body {
    padding: 0;
    max-height: 600px;
    overflow-y: auto;
    background: #1e1e1e;
}
.main-system-logs-page .log-entry {
    padding: 12px 20px;
    border-bottom: 1px solid #333;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.85rem;
    line-height: 1.6;
    color: #d4d4d4;
    transition: background 0.2s;
}
.main-system-logs-page .log-entry:hover {
    background: #2d2d2d;
}
.main-system-logs-page .log-entry:last-child {
    border-bottom: none;
}
.main-system-logs-page .log-error {
    color: #ff6b6b;
    background: #2d1f1f;
}
.main-system-logs-page .log-error:hover {
    background: #3d2424;
}
.main-system-logs-page .log-warning {
    color: #ffd93d;
    background: #2d2a1f;
}
.main-system-logs-page .log-warning:hover {
    background: #3d3624;
}
.main-system-logs-page .log-info {
    color: #6bcf7f;
}
.main-system-logs-page .log-debug {
    color: #74b9ff;
}
.main-system-logs-page .log-timestamp {
    color: #888;
    margin-right: 10px;
}
.main-system-logs-page .log-level {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-right: 10px;
}
.main-system-logs-page .level-ERROR {
    background: #ff6b6b;
    color: white;
}
.main-system-logs-page .level-WARNING {
    background: #ffd93d;
    color: #333;
}
.main-system-logs-page .level-INFO {
    background: #6bcf7f;
    color: white;
}
.main-system-logs-page .level-DEBUG {
    background: #74b9ff;
    color: white;
}
.main-system-logs-page .empty-logs {
    padding: 60px 20px;
    text-align: center;
    color: #999;
}
.main-system-logs-page .empty-logs i {
    font-size: 3rem;
    margin-bottom: 15px;
    opacity: 0.5;
}
.main-system-logs-page .refresh-btn {
    background: #667eea;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s;
}
.main-system-logs-page .refresh-btn:hover {
    background: #5568d3;
    transform: translateY(-1px);
}
.main-system-logs-page .refresh-btn i {
    font-size: 1rem;
}
.main-system-logs-page .stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}
.main-system-logs-page .stat-box {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    text-align: center;
}
.main-system-logs-page .stat-value {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 5px;
}
.main-system-logs-page .stat-label {
    color: #666;
    font-size: 0.9rem;
}
.main-system-logs-page .stat-error .stat-value  { color: #ff6b6b; }
.main-system-logs-page .stat-warning .stat-value { color: #ffd93d; }
.main-system-logs-page .stat-info .stat-value    { color: #6bcf7f; }
.main-system-logs-page .stat-total .stat-value   { color: #667eea; }