/* Modern UI Styles */
:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-success: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    --gradient-danger: linear-gradient(135deg, #dc3545 0%, #e83e8c 100%);
    --gradient-warning: linear-gradient(135deg, #ffc107 0%, #fd7e14 100%);
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    --border-radius: 0.5rem;
    --border-radius-lg: 1rem;
    --transition: all 0.3s ease;
}

/* Global Styles */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

/* Custom Cards */
.card {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    transition: var(--transition);
    overflow: hidden;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.card-header {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 1.5rem;
    font-weight: 600;
    font-size: 1.1rem;
}

.card-body {
    padding: 2rem;
}

/* Custom Buttons */
.btn {
    border-radius: var(--border-radius);
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    transition: var(--transition);
    border: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #5a6fd8 0%, #6a4190 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-success {
    background: var(--gradient-success);
    color: white;
}

.btn-danger {
    background: var(--gradient-danger);
    color: white;
}

.btn-warning {
    background: var(--gradient-warning);
    color: white;
}

.btn-info {
    background: linear-gradient(135deg, #17a2b8 0%, #6f42c1 100%);
    color: white;
}

.btn-secondary {
    background: linear-gradient(135deg, #6c757d 0%, #495057 100%);
    color: white;
}

/* Form Controls */
.form-control, .form-select {
    border: 2px solid #e9ecef;
    border-radius: var(--border-radius);
    padding: 0.75rem 1rem;
    transition: var(--transition);
    background: rgba(255, 255, 255, 0.9);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
    background: white;
}

.form-label {
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

/* Sidebar */
.sidebar {
    background: var(--gradient-primary);
    min-height: 100vh;
    padding: 2rem 1.5rem;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.sidebar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="50" cy="10" r="0.5" fill="rgba(255,255,255,0.05)"/><circle cx="10" cy="60" r="0.5" fill="rgba(255,255,255,0.05)"/><circle cx="90" cy="40" r="0.5" fill="rgba(255,255,255,0.05)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
    pointer-events: none;
}

.sidebar .nav-link {
    color: rgba(255, 255, 255, 0.9);
    padding: 1rem 1.5rem;
    margin: 0.25rem 0;
    border-radius: var(--border-radius);
    transition: var(--transition);
    position: relative;
    z-index: 1;
}

.sidebar .nav-link:hover,
.sidebar .nav-link.active {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    transform: translateX(5px);
}

.sidebar .nav-link i {
    width: 20px;
    margin-right: 0.75rem;
}

/* Main Content */
.main-content {
    padding: 2rem;
    background: transparent;
}

/* Page Headers */
.page-header {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
    border-left: 5px solid var(--primary-color);
}

.page-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark-color);
    margin: 0;
    display: flex;
    align-items: center;
}

.page-title i {
    margin-right: 1rem;
    color: var(--primary-color);
}

/* Stats Cards */
.stats-card {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stats-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.stats-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.stats-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0;
}

.stats-label {
    color: var(--dark-color);
    font-weight: 500;
    margin-top: 0.5rem;
}

/* Tables */
.table {
    background: white;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.table thead th {
    background: var(--gradient-primary);
    color: white;
    border: none;
    font-weight: 600;
    padding: 1rem;
}

.table tbody td {
    padding: 1rem;
    border-color: #f8f9fa;
    vertical-align: middle;
}

.table tbody tr:hover {
    background: rgba(102, 126, 234, 0.05);
}

/* Badges */
.badge {
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    font-size: 0.875rem;
}

.badge.bg-success {
    background: var(--gradient-success) !important;
}

.badge.bg-danger {
    background: var(--gradient-danger) !important;
}

.badge.bg-warning {
    background: var(--gradient-warning) !important;
}

.badge.bg-info {
    background: linear-gradient(135deg, #17a2b8 0%, #6f42c1 100%) !important;
}

/* Alerts */
.alert {
    border: none;
    border-radius: var(--border-radius);
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.alert-success {
    background: linear-gradient(135deg, rgba(40, 167, 69, 0.1) 0%, rgba(32, 201, 151, 0.1) 100%);
    color: #155724;
    border-left: 4px solid #28a745;
}

.alert-danger {
    background: linear-gradient(135deg, rgba(220, 53, 69, 0.1) 0%, rgba(232, 62, 140, 0.1) 100%);
    color: #721c24;
    border-left: 4px solid #dc3545;
}

.alert-warning {
    background: linear-gradient(135deg, rgba(255, 193, 7, 0.1) 0%, rgba(253, 126, 20, 0.1) 100%);
    color: #856404;
    border-left: 4px solid #ffc107;
}

.alert-info {
    background: linear-gradient(135deg, rgba(23, 162, 184, 0.1) 0%, rgba(111, 66, 193, 0.1) 100%);
    color: #0c5460;
    border-left: 4px solid #17a2b8;
}

/* Modals */
.modal-content {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.modal-header {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 1.5rem 2rem;
}

.modal-title {
    font-weight: 600;
    font-size: 1.25rem;
}

.modal-body {
    padding: 2rem;
}

.modal-footer {
    border: none;
    padding: 1.5rem 2rem;
    background: #f8f9fa;
}

/* Package Cards */
.package-card {
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.package-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition);
    z-index: 0;
}

.package-card:hover::before {
    opacity: 0.05;
}

.package-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.package-card.selected {
    border-color: var(--primary-color);
    background: rgba(102, 126, 234, 0.05);
}

.package-card .card-body {
    position: relative;
    z-index: 1;
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Fade In Animation */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        min-height: auto;
        padding: 1rem;
    }
    
    .main-content {
        padding: 1rem;
    }
    
    .page-header {
        padding: 1.5rem;
    }
    
    .page-title {
        font-size: 1.5rem;
    }
    
    .stats-card {
        padding: 1.5rem;
    }
    
    .stats-number {
        font-size: 2rem;
    }
    
    .card-body {
        padding: 1.5rem;
    }
    
    .modal-body {
        padding: 1.5rem;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --light-color: #212529;
        --dark-color: #f8f9fa;
    }
    
    body {
        background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    }
    
    .card {
        background: rgba(33, 37, 41, 0.95);
        color: #f8f9fa;
    }
    
    .form-control, .form-select {
        background: rgba(33, 37, 41, 0.9);
        color: #f8f9fa;
        border-color: #495057;
    }
    
    .table {
        background: rgba(33, 37, 41, 0.95);
        color: #f8f9fa;
    }
    
    .table tbody tr:hover {
        background: rgba(102, 126, 234, 0.1);
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #5a6fd8 0%, #6a4190 100%);
}

/* Print Styles */
@media print {
    .sidebar, .btn, .modal {
        display: none !important;
    }
    
    .main-content {
        padding: 0;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}

/* Import component styles */
@import url('components.css');