body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background: #f4f7f6; }
.wrapper { display: flex; width: 100%; align-items: stretch; }
#sidebar { min-width: 250px; max-width: 250px; background: #2c3e50; color: #fff; transition: all 0.3s; }
#sidebar .sidebar-header { padding: 20px; background: #1a252f; text-align: center; }
#sidebar ul li a { padding: 15px; display: block; color: #adb5bd; text-decoration: none; border-bottom: 1px solid #3e4f5f; }
#sidebar ul li a:hover { background: #34495e; color: #fff; }
#content { width: 100%; padding: 20px; }
.form-container { background: #fff; padding: 30px; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.1); }
.btn-primary { background: #27ae60; color: white; border: none; padding: 10px 20px; cursor: pointer; border-radius: 4px; }
.table-custom { width: 100%; border-collapse: collapse; margin-top: 20px; background: #fff; }
.table-custom th, .table-custom td { padding: 12px 15px; border: 1px solid #ddd; text-align: left; }
.table-custom th { background-color: #f8f9fa; color: #333; font-weight: 600; }
.text-danger { color: #e74c3c; font-weight: bold; }
.text-success { color: #27ae60; font-weight: bold; }
.badge { padding: 5px 10px; border-radius: 20px; font-size: 12px; }
.badge-low { background: #fdeaea; color: #e74c3c; border: 1px solid #e74c3c; }
.badge-good { background: #eafff2; color: #27ae60; border: 1px solid #27ae60; }
.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: #fff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    display: flex;
    flex-direction: column;
}

.stat-label {
    font-size: 14px;
    color: #7f8c8d;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-value {
    font-size: 24px;
    font-weight: bold;
    color: #2c3e50;
}

.text-info { color: #3498db; }