/* Custom Styles for UKT PSHT System */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --light-bg: #ecf0f1;
    --dark-bg: #34495e;
    --text-dark: #2c3e50;
    --text-light: #ffffff;
    --border-radius: 8px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

/* Body and General Styles */
body {
    background-color: #f8f9fa;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-dark);
}

/* Navbar Styles */
.navbar {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    border-bottom: 3px solid var(--secondary-color);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: 1px;
}

.nav-link {
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    color: var(--secondary-color) !important;
    transform: translateY(-2px);
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 50%;
    background-color: var(--secondary-color);
    transition: var(--transition);
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 80%;
}

/* Card Styles */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    margin-bottom: 20px;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.2);
}

.card-header {
    background: linear-gradient(135deg, var(--primary-color), var(--dark-bg));
    color: var(--text-light);
    border-radius: var(--border-radius) var(--border-radius) 0 0 !important;
    font-weight: 600;
    border: none;
}

/* Button Styles */
.btn {
    border-radius: var(--border-radius);
    font-weight: 500;
    padding: 8px 16px;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--secondary-color), #2980b9);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #2980b9, var(--secondary-color));
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(52, 152, 219, 0.3);
}

.btn-success {
    background: linear-gradient(135deg, var(--success-color), #219653);
}

.btn-success:hover {
    background: linear-gradient(135deg, #219653, var(--success-color));
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(39, 174, 96, 0.3);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-color), #e67e22);
    color: white;
}

.btn-warning:hover {
    background: linear-gradient(135deg, #e67e22, var(--warning-color));
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(243, 156, 18, 0.3);
}

.btn-info {
    background: linear-gradient(135deg, #3498db, #2c3e50);
}

.btn-info:hover {
    background: linear-gradient(135deg, #2c3e50, #3498db);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(52, 152, 219, 0.3);
}

.btn-danger {
    background: linear-gradient(135deg, var(--accent-color), #c0392b);
}

.btn-danger:hover {
    background: linear-gradient(135deg, #c0392b, var(--accent-color));
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(231, 76, 60, 0.3);
}

.btn-secondary {
    background: linear-gradient(135deg, #95a5a6, #7f8c8d);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #7f8c8d, #95a5a6);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(149, 165, 166, 0.3);
}

/* Form Styles */
.form-control, .form-select {
    border-radius: var(--border-radius);
    border: 2px solid #ddd;
    padding: 10px 15px;
    transition: var(--transition);
}

.form-control:focus, .form-select:focus {
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 0.25rem rgba(52, 152, 219, 0.25);
}

.form-label {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
}

/* Table Styles */
.table {
    background-color: white;
    border-radius: var(--border-radius);
    overflow: hidden;
}

.table thead th {
    background: linear-gradient(135deg, var(--primary-color), var(--dark-bg));
    color: var(--text-light);
    border: none;
    font-weight: 600;
}

.table-hover tbody tr:hover {
    background-color: rgba(52, 152, 219, 0.1);
    transform: scale(1.01);
    transition: var(--transition);
}

/* Alert Styles */
.alert {
    border-radius: var(--border-radius);
    border: none;
    box-shadow: var(--box-shadow);
}

.alert-success {
    background: linear-gradient(135deg, #d4edda, #c3e6cb);
    border-left: 4px solid var(--success-color);
}

.alert-danger {
    background: linear-gradient(135deg, #f8d7da, #f1b0b7);
    border-left: 4px solid var(--accent-color);
}

.alert-warning {
    background: linear-gradient(135deg, #fff3cd, #ffeaa7);
    border-left: 4px solid var(--warning-color);
}

.alert-info {
    background: linear-gradient(135deg, #d1ecf1, #bee5eb);
    border-left: 4px solid var(--secondary-color);
}

/* Badge Styles */
.badge {
    padding: 6px 12px;
    border-radius: 20px;
    font-weight: 600;
}

.badge.bg-success {
    background: linear-gradient(135deg, var(--success-color), #219653) !important;
}

.badge.bg-warning {
    background: linear-gradient(135deg, var(--warning-color), #e67e22) !important;
    color: white !important;
}

.badge.bg-danger {
    background: linear-gradient(135deg, var(--accent-color), #c0392b) !important;
}

.badge.bg-primary {
    background: linear-gradient(135deg, var(--secondary-color), #2980b9) !important;
}

.badge.bg-info {
    background: linear-gradient(135deg, #3498db, #2c3e50) !important;
}

/* Dashboard Stats Cards */
.card-stats {
    text-align: center;
    padding: 20px;
    border-radius: var(--border-radius);
    color: white;
    margin-bottom: 20px;
    transition: var(--transition);
}

.card-stats:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.2);
}

.card-stats .card-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.card-stats .card-text {
    font-size: 1rem;
    opacity: 0.9;
}

.bg-primary-gradient {
    background: linear-gradient(135deg, var(--secondary-color), #2980b9);
}

.bg-success-gradient {
    background: linear-gradient(135deg, var(--success-color), #219653);
}

.bg-info-gradient {
    background: linear-gradient(135deg, #3498db, #2c3e50);
}

.bg-warning-gradient {
    background: linear-gradient(135deg, var(--warning-color), #e67e22);
}

/* Image Styles */
.img-thumbnail {
    border-radius: var(--border-radius);
    border: 3px solid var(--secondary-color);
    padding: 5px;
    transition: var(--transition);
}

.img-thumbnail:hover {
    transform: scale(1.05);
    border-color: var(--accent-color);
}

/* Animation Effects */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

/* Loading Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top: 4px solid var(--secondary-color);
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1.2rem;
    }
    
    .card-stats .card-title {
        font-size: 2rem;
    }
    
    .table-responsive {
        font-size: 0.9rem;
    }
    
    .btn {
        padding: 6px 12px;
        font-size: 0.9rem;
    }
}

/* Print Styles */
@media print {
    .no-print {
        display: none !important;
    }
    
    body {
        background-color: white;
        margin: 0;
        padding: 0;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
    
    .btn {
        display: none;
    }
}