/* Elegant Platform Design System */
:root {
    /* Primary Colors */
    --primary-color: #0f52ba;
    --primary-gradient: linear-gradient(135deg, #0ea5e9 0%, #0f52ba 100%);
    --secondary-color: #64748b;
    --secondary-gradient: linear-gradient(135deg, #94a3b8 0%, #475569 100%);
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    
    /* Bootstrap Theme Overrides */
    --bs-primary: #0f52ba;
    --bs-primary-rgb: 15, 82, 186;
    --bs-link-color: #0f52ba;
    --bs-link-hover-color: #002e6e;
    
    /* Neutral Colors */
    --white: #ffffff;
    --light-gray: #f8f9fa;
    --gray: #6c757d;
    --dark-gray: #343a40;
    --black: #000000;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.18);
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--dark-gray);
    background: var(--light-gray);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

/* Cards */
.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: none;
    transition: all 0.3s ease;
    overflow: hidden;
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card-header {
    background: transparent;
    color: inherit;
    border-bottom: 1px solid #e9ecef;
    padding: var(--spacing-lg) var(--spacing-xl);
    font-weight: 600;
}

.card-body {
    padding: var(--spacing-xl);
}

/* Buttons */
.btn {
    border-radius: var(--radius-md);
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    font-size: 0.9rem;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--white);
}

.btn-secondary {
    background: var(--gray);
    color: var(--white);
}

.btn-secondary:hover {
    background: #5a6268;
    transform: translateY(-2px);
    color: var(--white);
}

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

.btn-success:hover {
    background: #218838;
    transform: translateY(-2px);
    color: var(--white);
}

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

.btn-danger:hover {
    background: #c82333;
    transform: translateY(-2px);
    color: var(--white);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
}

/* Form Controls */
.form-control {
    border-radius: var(--radius-md);
    border: 2px solid #e9ecef;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: var(--white);
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    outline: none;
}

.form-select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.5rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 2.5rem;
}

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

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

.table tbody td {
    padding: var(--spacing-lg);
    border-bottom: 1px solid #e9ecef;
    vertical-align: middle;
}

.table tbody tr:hover {
    background: var(--light-gray);
}

/* Status Badges */
.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-success {
    background: #d4edda;
    color: #155724;
}

.badge-warning {
    background: #fff3cd;
    color: #856404;
}

.badge-danger {
    background: #f8d7da;
    color: #721c24;
}

.badge-info {
    background: #d1ecf1;
    color: #0c5460;
}

/* Alerts */
.alert {
    border-radius: var(--radius-md);
    border: none;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.alert-success {
    background: #d4edda;
    color: #155724;
}

.alert-danger {
    background: #f8d7da;
    color: #721c24;
}

.alert-warning {
    background: #fff3cd;
    color: #856404;
}

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
}

/* Navigation */
.navbar {
    background: var(--white);
    box-shadow: var(--shadow-sm);
    border: none;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary-color);
}

.nav-link {
    font-weight: 500;
    color: var(--dark-gray);
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: var(--primary-color);
}

/* Sidebar */
.sidebar {
    background: var(--white);
    box-shadow: var(--shadow-md);
    border: none;
}

.sidebar .nav-link {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    margin: 0.25rem var(--spacing-md);
    transition: all 0.3s ease;
}

.sidebar .nav-link:hover {
    background: var(--light-gray);
    color: var(--primary-color);
}

.sidebar .nav-link.active {
    background: var(--primary-gradient);
    color: var(--white);
}

/* Dashboard Cards */
.dashboard-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    border: none;
}

.dashboard-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.dashboard-card .icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.dashboard-card .icon.primary {
    background: var(--primary-gradient);
}

.dashboard-card .icon.success {
    background: var(--success-color);
}

.dashboard-card .icon.warning {
    background: var(--warning-color);
}

.dashboard-card .icon.info {
    background: var(--info-color);
}

/* Charts */
.chart-container {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-xl);
}

/* Pagination */
.pagination {
    gap: 0.25rem;
}

.page-link {
    border-radius: var(--radius-md);
    border: none;
    color: var(--dark-gray);
    padding: 0.5rem 0.75rem;
    transition: all 0.3s ease;
}

.page-link:hover {
    background: var(--primary-color);
    color: var(--white);
}

.page-item.active .page-link {
    background: var(--primary-gradient);
    border: none;
}

/* Dropdown */
.dropdown-menu {
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border: none;
    padding: 0.5rem;
}

.dropdown-item {
    border-radius: var(--radius-sm);
    padding: 0.5rem 1rem;
    transition: all 0.3s ease;
}

.dropdown-item:hover {
    background: var(--light-gray);
    color: var(--primary-color);
}

/* Loading Spinner */
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

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

/* Responsive Design */
@media (max-width: 1200px) {
    .container-xxl {
        max-width: 100%;
        padding: 0 var(--spacing-lg);
    }
}

@media (max-width: 992px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
}

@media (max-width: 768px) {
    .card-body {
        padding: var(--spacing-lg);
    }
    
    .table-responsive {
        font-size: 0.9rem;
    }
    
    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }
    
    .dashboard-card {
        padding: var(--spacing-lg);
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }
    h4 { font-size: 1.25rem; }
    h5 { font-size: 1.1rem; }
    h6 { font-size: 1rem; }
}

@media (max-width: 576px) {
    .container-xxl {
        padding: 0 var(--spacing-md);
    }
    
    .card-body {
        padding: var(--spacing-md);
    }
    
    .btn {
        width: 100%;
        justify-content: center;
        margin-bottom: var(--spacing-sm);
    }
    
    .table-responsive {
        font-size: 0.8rem;
    }
    
    .table-responsive th,
    .table-responsive td {
        padding: 0.5rem;
    }
}

/* Platform Specific Colors */
.platform-jas .btn-primary {
    background: var(--primary-color);
}

.platform-erms .btn-primary {
    background: var(--secondary-color);
}

.platform-jobportal .btn-primary {
    background: var(--info-color);
}

/* Retina Ready */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .card {
        border: 0.5px solid rgba(0, 0, 0, 0.1);
    }
    
    .btn {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
}

/* Dark Mode Support */
[data-bs-theme="dark"] {
    :root {
        --white: #1a1a1a;
        --light-gray: #2d2d2d;
        --dark-gray: #ffffff;
        --gray: #cccccc;
    }
    
    body {
        background: var(--light-gray);
        color: var(--dark-gray);
    }
    
    .card {
        background: var(--white);
    }
    
    .form-control {
        background: var(--white);
        color: var(--dark-gray);
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus Styles */
.btn:focus,
.form-control:focus,
.form-select:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    .sidebar,
    .navbar,
    .btn,
    .dropdown-menu {
        display: none !important;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #000;
    }
}

/* Override all gradient backgrounds with primary color */
.table thead th,
.dataTable thead th,
table.dataTable thead th,
.btn-primary,
.btn.btn-primary,
.navbar-brand,
.navbar .nav-link.active,
.sidebar .nav-link.active,
.pagination .page-item.active .page-link,
.dropdown-menu .dropdown-item.active,
.badge-primary,
.alert-primary {
    background: var(--primary-color) !important;
    background-image: none !important;
}

/* Card headers should be transparent to match template */
.card-header {
    background: transparent !important;
    background-image: none !important;
    color: inherit !important;
}

/* Ensure DataTables headers use primary color */
div.dt-container table.dataTable thead th,
.dataTables_wrapper .dataTables_length select,
.dataTables_wrapper .dataTables_filter input,
.dataTables_wrapper .dataTables_info,
.dataTables_wrapper .dataTables_paginate .paginate_button.current {
    background: var(--primary-color) !important;
    background-image: none !important;
    color: var(--white) !important;
}

/* Override any remaining gradient backgrounds */
[style*="gradient"],
[style*="linear-gradient"],
[style*="radial-gradient"] {
    background: var(--primary-color) !important;
    background-image: none !important;
}