/* Admin Panel Styles */
:root {
    --primary-color: #4e73df;
    --secondary-color: #858796;
    --success-color: #1cc88a;
    --info-color: #36b9cc;
    --warning-color: #f6c23e;
    --danger-color: #e74a3b;
    --light-color: #f8f9fc;
    --dark-color: #5a5c69;
    --sidebar-width: 250px;
    --header-height: 60px;
    --transition-speed: 0.3s;
}

/* Dark theme variables */
[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #3d3d3d;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --border-color: #404040;
    --card-bg: #2d2d2d;
    --sidebar-bg: #1a1a1a;
    --header-bg: #2d2d2d;
}

/* Light theme variables */
[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fc;
    --bg-tertiary: #eaecf4;
    --text-primary: #5a5c69;
    --text-secondary: #858796;
    --border-color: #e3e6f0;
    --card-bg: #ffffff;
    --sidebar-bg: #4e73df;
    --header-bg: #ffffff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

/* Login Page Styles */
.login-page {
    background: linear-gradient(135deg, var(--primary-color) 0%, #224abe 100%);
    min-height: 100vh;
}

.login-page .card {
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
    border: none;
    border-radius: 15px;
}

.login-page .card-body {
    padding: 3rem;
}

.login-page .form-control {
    border: 2px solid #e3e6f0;
    border-radius: 10px;
    padding: 12px 15px;
    transition: all 0.3s ease;
}

.login-page .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(78, 115, 223, 0.25);
}

.login-page .input-group-text {
    background: transparent;
    border: 2px solid #e3e6f0;
    border-right: none;
    border-radius: 10px 0 0 10px;
}

.login-page .btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, #224abe 100%);
    border: none;
    border-radius: 10px;
    padding: 12px 30px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.login-page .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(78, 115, 223, 0.4);
}

/* Main Layout Styles */
.admin-layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar Styles */
.sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    z-index: 1000;
    transition: transform var(--transition-speed);
    overflow-y: auto;
}

.sidebar.collapsed {
    transform: translateX(-100%);
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    text-align: center;
}

.sidebar-header h3 {
    color: var(--text-primary);
    margin: 0;
    font-weight: 700;
}

.sidebar-nav {
    padding: 1rem 0;
}

.nav-item {
    margin: 0.25rem 1rem;
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    transform: translateX(5px);
}

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

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

/* Main Content Styles */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    transition: margin-left var(--transition-speed);
}

.main-content.expanded {
    margin-left: 0;
}

/* Header Styles */
.header {
    background: var(--header-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 999;
}

.header-left {
    display: flex;
    align-items: center;
}

.sidebar-toggle {
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--text-primary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.sidebar-toggle:hover {
    background: var(--bg-tertiary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-menu {
    position: relative;
}

.user-menu-btn {
    background: none;
    border: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
    cursor: pointer;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.user-menu-btn:hover {
    background: var(--bg-tertiary);
}

.user-menu-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    min-width: 200px;
    z-index: 1000;
    display: none;
}

.user-menu-dropdown.show {
    display: block;
}

.user-menu-item {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    text-decoration: none;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.3s ease;
}

.user-menu-item:hover {
    background: var(--bg-tertiary);
    text-decoration: none;
}

.user-menu-item:last-child {
    border-bottom: none;
}

/* Content Area */
.content {
    padding: 2rem;
}

.page-header {
    margin-bottom: 2rem;
}

.page-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.page-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Card Styles */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.card-header {
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem;
    border-radius: 10px 10px 0 0;
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    background: var(--bg-tertiary);
    border-top: 1px solid var(--border-color);
    padding: 1rem 1.5rem;
    border-radius: 0 0 10px 10px;
}

/* Button Styles */
.btn {
    border-radius: 8px;
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: all 0.3s ease;
    border: none;
}

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

.btn-primary:hover {
    background: #224abe;
    transform: translateY(-1px);
}

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

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

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

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

/* Form Styles */
.form-control {
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    transition: all 0.3s ease;
    background: var(--bg-primary);
    color: var(--text-primary);
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(78, 115, 223, 0.25);
    background: var(--bg-primary);
    color: var(--text-primary);
}

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

/* Table Styles */
.table {
    background: var(--card-bg);
    border-radius: 10px;
    overflow: hidden;
}

.table th {
    background: var(--bg-tertiary);
    border-bottom: 2px solid var(--border-color);
    color: var(--text-primary);
    font-weight: 600;
    padding: 1rem;
}

.table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.table tbody tr:hover {
    background: var(--bg-tertiary);
}

/* Badge Styles */
.badge {
    padding: 0.5rem 0.75rem;
    border-radius: 20px;
    font-weight: 500;
}

/* Alert Styles */
.alert {
    border-radius: 10px;
    border: none;
    padding: 1rem 1.5rem;
}

/* Modal Styles */
.modal-content {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-tertiary);
}

.modal-footer {
    border-top: 1px solid var(--border-color);
    background: var(--bg-tertiary);
}

/* Dashboard Stats */
.stats-card {
    background: linear-gradient(135deg, var(--primary-color) 0%, #224abe 100%);
    color: white;
    border: none;
    border-radius: 15px;
    overflow: hidden;
    position: relative;
}

.stats-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transform: translate(30px, -30px);
}

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

.stats-icon {
    font-size: 3rem;
    opacity: 0.8;
}

.stats-number {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0.5rem 0;
}

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

/* File Upload Styles */
.file-upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    background: var(--bg-tertiary);
}

.file-upload-area:hover {
    border-color: var(--primary-color);
    background: rgba(78, 115, 223, 0.05);
}

.file-upload-area.dragover {
    border-color: var(--primary-color);
    background: rgba(78, 115, 223, 0.1);
}

/* Image Preview */
.image-preview {
    max-width: 200px;
    max-height: 200px;
    border-radius: 8px;
    border: 2px solid var(--border-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .content {
        padding: 1rem;
    }
    
    .header {
        padding: 1rem;
    }
}

/* Theme Toggle */
.theme-toggle {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.theme-toggle:hover {
    background: var(--bg-tertiary);
}

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

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

/* Print Styles */
@media print {
    .sidebar, .header, .btn, .no-print {
        display: none !important;
    }
    
    .main-content {
        margin-left: 0 !important;
    }
    
    .content {
        padding: 0 !important;
    }
}

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

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}