:root {
    --primary-color: #3498db;
    --primary-dark: #2980b9;
    --primary-light: #5dade2;
    --primary-rgb: 52, 152, 219;
    --danger-color: #e74c3c;
    --danger-dark: #c0392b;
    --danger-rgb: 231, 76, 60;
    --success-color: #27ae60;
    --success-dark: #1e8449;
    --success-rgb: 39, 174, 96;
    --warning-color: #f39c12;
    --warning-dark: #d68910;
    --warning-rgb: 243, 156, 18;
    --info-color: #17a2b8;
    --info-dark: #138496;
    --info-rgb: 23, 162, 184;
    --secondary-color: #6c757d;
    --secondary-dark: #545b62;
    
    --bg-color: #f5f7fa;
    --bg-secondary: #e9ecef;
    --card-bg: #ffffff;
    --text-color: #2c3e50;
    --text-muted: #7f8c8d;
    --border-color: #e1e8ed;
    --sidebar-bg: #2c3e50;
    --sidebar-text: #ecf0f1;
    
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    --shadow-primary: 0 4px 14px rgba(var(--primary-rgb), 0.25);
    --shadow-danger: 0 4px 14px rgba(var(--danger-rgb), 0.25);
    --shadow-success: 0 4px 14px rgba(var(--success-rgb), 0.25);
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.35s ease;
    
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;
    --z-toast: 800;
    
    --success-bg: #d4edda;
    --success-text: #155724;
    --success-border: #c3e6cb;
    --warning-bg: #fff3cd;
    --warning-text: #856404;
    --warning-border: #ffeeba;
    --danger-bg: #f8d7da;
    --danger-text: #721c24;
    --danger-border: #f5c6cb;
    --info-bg: #d1ecf1;
    --info-text: #0c5460;
    --info-border: #bee5eb;
    --secondary-bg: #e2e3e5;
    --secondary-text: #383d41;
    --secondary-border: #d6d8db;
}

[data-theme="dark"] {
    --primary-color: #5dade2;
    --primary-dark: #3498db;
    --primary-light: #85c1e9;
    --primary-rgb: 93, 173, 226;
    --danger-color: #ec7063;
    --danger-dark: #e74c3c;
    --danger-rgb: 236, 112, 99;
    --success-color: #58d68d;
    --success-dark: #27ae60;
    --success-rgb: 88, 214, 141;
    --warning-color: #f7dc6f;
    --warning-dark: #f39c12;
    --warning-rgb: 247, 220, 111;
    --info-color: #5dade2;
    --info-dark: #17a2b8;
    --info-rgb: 93, 173, 226;
    
    --bg-color: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --card-bg: #16213e;
    --text-color: #eaeaea;
    --text-muted: #a0a0a0;
    --border-color: #2d3748;
    --sidebar-bg: #0a0a14;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.35);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.4);
    
    --success-bg: rgba(88, 214, 141, 0.15);
    --success-text: #58d68d;
    --success-border: rgba(88, 214, 141, 0.3);
    --warning-bg: rgba(247, 220, 111, 0.15);
    --warning-text: #f7dc6f;
    --warning-border: rgba(247, 220, 111, 0.3);
    --danger-bg: rgba(236, 112, 99, 0.15);
    --danger-text: #ec7063;
    --danger-border: rgba(236, 112, 99, 0.3);
    --info-bg: rgba(93, 173, 226, 0.15);
    --info-text: #5dade2;
    --info-border: rgba(93, 173, 226, 0.3);
    --secondary-bg: rgba(108, 117, 125, 0.2);
    --secondary-text: #adb5bd;
    --secondary-border: rgba(108, 117, 125, 0.3);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --primary-color: #5dade2;
        --primary-dark: #3498db;
        --primary-light: #85c1e9;
        --primary-rgb: 93, 173, 226;
        --danger-color: #ec7063;
        --danger-dark: #e74c3c;
        --danger-rgb: 236, 112, 99;
        --success-color: #58d68d;
        --success-dark: #27ae60;
        --success-rgb: 88, 214, 141;
        --warning-color: #f7dc6f;
        --warning-dark: #f39c12;
        --warning-rgb: 247, 220, 111;
        --info-color: #5dade2;
        --info-dark: #17a2b8;
        --info-rgb: 93, 173, 226;
        
        --bg-color: #0f0f1a;
        --bg-secondary: #1a1a2e;
        --card-bg: #16213e;
        --text-color: #eaeaea;
        --text-muted: #a0a0a0;
        --border-color: #2d3748;
        --sidebar-bg: #0a0a14;
        
        --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
        --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
        --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.35);
        --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.4);
        
        --success-bg: rgba(88, 214, 141, 0.15);
        --success-text: #58d68d;
        --success-border: rgba(88, 214, 141, 0.3);
        --warning-bg: rgba(247, 220, 111, 0.15);
        --warning-text: #f7dc6f;
        --warning-border: rgba(247, 220, 111, 0.3);
        --danger-bg: rgba(236, 112, 99, 0.15);
        --danger-text: #ec7063;
        --danger-border: rgba(236, 112, 99, 0.3);
        --info-bg: rgba(93, 173, 226, 0.15);
        --info-text: #5dade2;
        --info-border: rgba(93, 173, 226, 0.3);
        --secondary-bg: rgba(108, 117, 125, 0.2);
        --secondary-text: #adb5bd;
        --secondary-border: rgba(108, 117, 125, 0.3);
    }
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    background: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

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

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
    background: var(--text-muted);
    border-radius: var(--radius-full);
    transition: background var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

.header {
    background: var(--card-bg);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-md);
    flex-wrap: wrap;
    gap: var(--spacing-md);
    transition: box-shadow var(--transition-normal), background-color var(--transition-normal);
}

.header:hover {
    box-shadow: var(--shadow-lg);
}

.header h1 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin: 0;
}

.header h1 i {
    color: var(--primary-color);
}

.header .user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.header .user-info span {
    font-weight: var(--font-weight-medium);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    line-height: 1.5;
    text-decoration: none;
    white-space: nowrap;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    border: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    position: relative;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(255,255,255,0.15) 0%, rgba(255,255,255,0) 100%);
    pointer-events: none;
    border-radius: inherit;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn:active {
    transform: scale(0.97) translateY(0);
}

.btn:disabled {
    opacity: 0.65;
    cursor: not-allowed;
    transform: none;
    pointer-events: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
    box-shadow: 0 6px 20px rgba(var(--primary-rgb), 0.35);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-color) 0%, var(--danger-dark) 100%);
    color: white;
    box-shadow: var(--shadow-danger);
}

.btn-danger:hover {
    box-shadow: 0 6px 20px rgba(var(--danger-rgb), 0.35);
}

.btn-success {
    background: linear-gradient(135deg, var(--success-color) 0%, var(--success-dark) 100%);
    color: white;
    box-shadow: var(--shadow-success);
}

.btn-success:hover {
    box-shadow: 0 6px 20px rgba(var(--success-rgb), 0.35);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, var(--warning-dark) 100%);
    color: white;
}

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

.btn-secondary:hover {
    background: var(--secondary-dark);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-color);
}

.btn-outline:hover {
    background: var(--bg-secondary);
    border-color: var(--primary-color);
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
}

.btn-icon {
    padding: var(--spacing-sm);
    width: 36px;
    height: 36px;
}

.btn-loading {
    pointer-events: none;
    color: transparent !important;
    position: relative;
}

.btn-loading::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    margin: -8px 0 0 -8px;
    border: 2px solid transparent;
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: btn-spin 0.6s linear infinite;
}

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

.card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), background-color var(--transition-normal);
}

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

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    color: var(--text-color);
}

.form-control {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    font-family: inherit;
    line-height: 1.5;
    color: var(--text-color);
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-normal);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.15);
}

.form-control::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

.form-control:disabled {
    background: var(--bg-secondary);
    cursor: not-allowed;
    opacity: 0.7;
}

select.form-control {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%237f8c8d' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 12px;
    padding-right: 36px;
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

.form-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.form-row > .form-group {
    flex: 1;
    min-width: 150px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.table-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    transition: background-color var(--transition-fast);
}

th {
    background: var(--bg-secondary);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    white-space: nowrap;
}

tr {
    transition: background-color var(--transition-fast);
}

tr:hover {
    background: var(--bg-secondary);
}

.table-actions {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    line-height: 1.4;
    text-align: center;
    white-space: nowrap;
    border-radius: var(--radius-full);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.badge-success {
    background: var(--success-bg);
    color: var(--success-text);
}

.badge-warning {
    background: var(--warning-bg);
    color: var(--warning-text);
}

.badge-danger {
    background: var(--danger-bg);
    color: var(--danger-text);
}

.badge-info {
    background: var(--info-bg);
    color: var(--info-text);
}

.badge-secondary {
    background: var(--secondary-bg);
    color: var(--secondary-text);
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: var(--z-modal-backdrop);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--card-bg);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-xl);
    transform: scale(0.9) translateY(-20px);
    transition: transform var(--transition-normal), background-color var(--transition-normal);
}

.modal.active .modal-content {
    transform: scale(1) translateY(0);
}

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.modal-header h3 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin: 0;
}

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.modal-lg .modal-content {
    max-width: 700px;
}

.modal-sm .modal-content {
    max-width: 350px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.stat-card {
    background: var(--card-bg);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), background-color var(--transition-normal);
}

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

.stat-card .value {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--primary-color);
    line-height: var(--line-height-tight);
}

.stat-card .label {
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    border: 1px solid transparent;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.alert i {
    margin-top: 2px;
}

.alert-success {
    background: var(--success-bg);
    color: var(--success-text);
    border-color: var(--success-border);
}

.alert-danger {
    background: var(--danger-bg);
    color: var(--danger-text);
    border-color: var(--danger-border);
}

.alert-warning {
    background: var(--warning-bg);
    color: var(--warning-text);
    border-color: var(--warning-border);
}

.alert-info {
    background: var(--info-bg);
    color: var(--info-text);
    border-color: var(--info-border);
}

.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--bg-color) 0%, var(--bg-secondary) 100%);
}

.login-box {
    background: var(--card-bg);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow-xl);
    animation: fadeInUp 0.5s ease;
}

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

.login-box h2 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
}

.login-logo {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.login-logo i {
    font-size: 48px;
    color: var(--primary-color);
    animation: pulse 2s ease-in-out infinite;
}

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

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
}

.pagination a, .pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-color);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
}

.pagination a:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.pagination .active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.pagination .disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.copy-btn {
    cursor: pointer;
    opacity: 0.6;
    transition: opacity var(--transition-fast), color var(--transition-fast);
}

.copy-btn:hover {
    opacity: 1;
    color: var(--primary-color);
}

.text-muted { color: var(--text-muted); }
.text-success { color: var(--success-color); }
.text-danger { color: var(--danger-color); }
.text-warning { color: var(--warning-color); }
.text-primary { color: var(--primary-color); }

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }
.p-5 { padding: var(--spacing-xl); }

.d-none { display: none !important; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-inline-flex { display: inline-flex; }
.d-grid { display: grid; }

.flex-wrap { flex-wrap: wrap; }
.flex-nowrap { flex-wrap: nowrap; }
.flex-column { flex-direction: column; }
.flex-row { flex-direction: row; }
.justify-content-start { justify-content: flex-start; }
.justify-content-center { justify-content: center; }
.justify-content-end { justify-content: flex-end; }
.justify-content-between { justify-content: space-between; }
.align-items-start { align-items: flex-start; }
.align-items-center { align-items: center; }
.align-items-end { align-items: flex-end; }

.gap-1 { gap: var(--spacing-xs); }
.gap-2 { gap: var(--spacing-sm); }
.gap-3 { gap: var(--spacing-md); }
.gap-4 { gap: var(--spacing-lg); }

.w-100 { width: 100%; }
.w-50 { width: 50%; }
.w-25 { width: 25%; }
.w-20 { width: 20%; }
.w-10 { width: 10%; }
.w-15 { width: 15%; }
.w-30 { width: 30%; }
.w-35 { width: 35%; }
.w-40 { width: 40%; }
.w-60 { width: 60%; }
.w-80 { width: 80%; }
.h-100 { height: 100%; }

.search-box {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.search-box input,
.search-box select {
    flex: 1;
    min-width: 150px;
}

.search-box .btn {
    flex-shrink: 0;
}

pre {
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    overflow-x: auto;
    font-size: var(--font-size-sm);
    font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
}

code {
    background: var(--bg-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
}

pre code {
    background: none;
    padding: 0;
}

.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: none;
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    color: var(--text-color);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--primary-color);
    color: white;
}

.theme-toggle i {
    font-size: var(--font-size-lg);
    transition: transform var(--transition-normal);
}

.theme-toggle:hover i {
    transform: rotate(15deg);
}

.toast-container {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--card-bg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    pointer-events: auto;
    animation: toastIn 0.3s ease;
    max-width: 350px;
}

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.toast.toast-out {
    animation: toastOut 0.3s ease forwards;
}

@keyframes toastOut {
    to {
        opacity: 0;
        transform: translateX(100%);
    }
}

.toast-success { border-left: 4px solid var(--success-color); }
.toast-danger { border-left: 4px solid var(--danger-color); }
.toast-warning { border-left: 4px solid var(--warning-color); }
.toast-info { border-left: 4px solid var(--info-color); }

.toast-icon {
    font-size: var(--font-size-lg);
}

.toast-success .toast-icon { color: var(--success-color); }
.toast-danger .toast-icon { color: var(--danger-color); }
.toast-warning .toast-icon { color: var(--warning-color); }
.toast-info .toast-icon { color: var(--info-color); }

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: var(--font-weight-semibold);
    margin-bottom: 2px;
}

.toast-message {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.toast-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: var(--spacing-xs);
    transition: color var(--transition-fast);
}

.toast-close:hover {
    color: var(--text-color);
}

.skeleton {
    background: linear-gradient(90deg, var(--bg-secondary) 25%, var(--border-color) 50%, var(--bg-secondary) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: var(--radius-sm);
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.skeleton-text {
    height: 1em;
    margin-bottom: var(--spacing-sm);
}

.skeleton-text:last-child {
    width: 70%;
}

.skeleton-title {
    height: 1.5em;
    width: 50%;
    margin-bottom: var(--spacing-md);
}

.skeleton-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
}

.skeleton-card {
    height: 120px;
}

.confirm-dialog {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: var(--z-modal-backdrop);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.confirm-dialog.active {
    opacity: 1;
    visibility: visible;
}

.confirm-dialog-content {
    background: var(--card-bg);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    max-width: 400px;
    width: 100%;
    text-align: center;
    box-shadow: var(--shadow-xl);
    transform: scale(0.9);
    transition: transform var(--transition-normal);
}

.confirm-dialog.active .confirm-dialog-content {
    transform: scale(1);
}

.confirm-dialog-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
}

.confirm-dialog-icon.warning { color: var(--warning-color); }
.confirm-dialog-icon.danger { color: var(--danger-color); }
.confirm-dialog-icon.info { color: var(--info-color); }

.confirm-dialog-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
}

.confirm-dialog-message {
    color: var(--text-muted);
    margin-bottom: var(--spacing-lg);
}

.confirm-dialog-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
}

@media (max-width: 1024px) {
    .container {
        padding: var(--spacing-md);
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
}

@media (max-width: 768px) {
    :root {
        font-size: 15px;
    }
    
    .container {
        padding: var(--spacing-sm);
    }
    
    .header {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .header h1 {
        font-size: var(--font-size-xl);
    }
    
    .search-box {
        flex-direction: column;
    }
    
    .search-box input,
    .search-box select {
        min-width: 100%;
    }
    
    .search-box .btn {
        width: 100%;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }
    
    .stat-card {
        padding: var(--spacing-md);
    }
    
    .stat-card .value {
        font-size: var(--font-size-2xl);
    }
    
    .card {
        padding: var(--spacing-md);
    }
    
    .card-header {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }
    
    .modal-content {
        width: 95%;
        margin: var(--spacing-sm);
        max-height: 85vh;
    }
    
    .modal-header,
    .modal-body,
    .modal-footer {
        padding: var(--spacing-md);
    }
    
    .table-responsive {
        display: block;
    }
    
    .table-responsive table {
        display: none;
    }
    
    .table-responsive .mobile-cards {
        display: block;
    }
    
    .mobile-card {
        background: var(--card-bg);
        border-radius: var(--radius-md);
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-sm);
        box-shadow: var(--shadow-sm);
    }
    
    .mobile-card-row {
        display: flex;
        justify-content: space-between;
        padding: var(--spacing-xs) 0;
        border-bottom: 1px solid var(--border-color);
    }
    
    .mobile-card-row:last-child {
        border-bottom: none;
    }
    
    .mobile-card-label {
        font-weight: var(--font-weight-medium);
        color: var(--text-muted);
        font-size: var(--font-size-sm);
    }
    
    .mobile-card-value {
        text-align: right;
    }
    
    .mobile-card-actions {
        display: flex;
        gap: var(--spacing-xs);
        margin-top: var(--spacing-sm);
        justify-content: flex-end;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        flex-direction: column;
    }
    
    .form-row > .form-group {
        min-width: 100%;
    }
    
    .toast-container {
        left: var(--spacing-sm);
        right: var(--spacing-sm);
        top: var(--spacing-sm);
    }
    
    .toast {
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    :root {
        font-size: 14px;
    }
    
    .header {
        flex-direction: column;
        align-items: stretch;
        padding: var(--spacing-sm);
    }
    
    .header h1 {
        font-size: var(--font-size-lg);
        width: 100%;
    }
    
    .header .user-info {
        width: 100%;
        justify-content: space-between;
    }
    
    .header .user-info .btn {
        flex: 1;
        justify-content: center;
    }
    
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-xs);
    }
    
    .stat-card {
        padding: var(--spacing-sm);
    }
    
    .stat-card .value {
        font-size: var(--font-size-xl);
    }
    
    .stat-card .label {
        font-size: var(--font-size-xs);
    }
    
    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .btn-sm {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-xs);
    }
    
    .login-box {
        padding: var(--spacing-lg);
    }
    
    .table-actions {
        flex-direction: column;
    }
    
    .table-actions .btn {
        width: 100%;
    }
    
    .pagination a, .pagination span {
        min-width: 32px;
        height: 32px;
        font-size: var(--font-size-xs);
    }
}

@media (max-width: 360px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
}

@media (orientation: landscape) and (max-height: 500px) {
    .login-container {
        padding: var(--spacing-sm);
    }
    
    .login-box {
        padding: var(--spacing-md);
    }
    
    .login-logo {
        margin-bottom: var(--spacing-sm);
    }
    
    .login-logo i {
        font-size: 36px;
    }
    
    .login-box h2 {
        margin-bottom: var(--spacing-md);
    }
}

@media print {
    .header,
    .btn,
    .modal,
    .toast-container,
    .theme-toggle,
    .pagination {
        display: none !important;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
    
    body {
        background: white;
        color: black;
    }
}

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