/* File: assets/css/modern.css */
/* Mô tả: CSS hiện đại cho ứng dụng - Phiên bản cải tiến */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    /* Primary Colors - Gradient Blue Theme */
    --primary-color: #667eea;
    --primary-hover: #5a6fd8;
    --primary-light: #f0f2ff;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    
    /* Status Colors */
    --success-color: #10b981;
    --success-light: #d1fae5;
    --danger-color: #ef4444;
    --danger-light: #fee2e2;
    --warning-color: #f59e0b;
    --warning-light: #fef3c7;
    --info-color: #3b82f6;
    --info-light: #dbeafe;
    
    /* Background Colors */
    --light-bg: #fafbfc;
    --card-bg: #ffffff;
    --gray-bg: #f3f4f6;
    --dark-bg: #1f2937;
    --overlay-bg: rgba(0, 0, 0, 0.5);
    
    /* Text Colors */
    --dark-text: #111827;
    --medium-text: #374151;
    --light-text: #6b7280;
    --muted-text: #9ca3af;
    
    /* Border & Shadow */
    --border-color: #e5e7eb;
    --border-radius: 0.75rem;
    --border-radius-sm: 0.5rem;
    --border-radius-lg: 1rem;
    --box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --box-shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --box-shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Transitions & Animations */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease-out;
    --transition-slow: all 0.5s ease-in-out;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --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: 1.875rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 15px;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
}

/* Base styles */
* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background: linear-gradient(135deg, var(--light-bg) 0%, #f8fafc 100%);
    color: var(--dark-text);
    font-family: var(--font-family);
    line-height: 1.7;
    font-size: var(--font-size-base);
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 0;
}

h1 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
}

h2 {
    font-size: var(--font-size-2xl);
}

h3 {
    font-size: var(--font-size-xl);
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--medium-text);
}

/* Navbar styling */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--box-shadow-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    position: sticky;
    top: 0;
    z-index: 1030;
    transition: var(--transition);
}

.navbar-brand {
    font-weight: 700;
    font-size: var(--font-size-xl);
    color: var(--primary-color) !important;
    text-decoration: none;
}

.navbar-brand img {
    transition: var(--transition);
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.navbar-brand:hover img {
    transform: scale(1.05) rotate(2deg);
}

.nav-link {
    font-weight: 500;
    color: var(--medium-text) !important;
    padding: var(--spacing-sm) var(--spacing-md) !important;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    color: var(--primary-color) !important;
    background-color: var(--primary-light);
    transform: translateY(-1px);
}

.nav-link.active {
    color: var(--primary-color) !important;
    background-color: var(--primary-light);
}

.dropdown-menu {
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-lg);
    border: 1px solid var(--border-color);
    padding: var(--spacing-sm) 0;
    margin-top: var(--spacing-xs);
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
}

.dropdown-item {
    padding: var(--spacing-sm) var(--spacing-lg);
    transition: var(--transition);
    color: var(--medium-text);
    font-weight: 500;
}

.dropdown-item:hover {
    background: linear-gradient(135deg, var(--primary-light) 0%, rgba(102, 126, 234, 0.1) 100%);
    color: var(--primary-color);
    transform: translateX(4px);
}

/* Card styling */
.card {
    margin-bottom: var(--spacing-lg);
    border-radius: var(--border-radius);
    /*box-shadow: var(--box-shadow-sm);*/
    transition: var(--transition);
    border: 1px solid var(--border-color);
    overflow: hidden;
    background: var(--card-bg);
    position: relative;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--accent-color) 100%);
}

.card-header {
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    padding: var(--spacing-lg);
    color: var(--dark-text);
    font-size: var(--font-size-lg);
}

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

.card-footer {
    background-color: var(--gray-bg);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-md) var(--spacing-lg);
}

/* Button styling */
.btn {
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    padding: var(--spacing-sm) var(--spacing-lg);
    transition: var(--transition);
    border: none;
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
        justify-content: center;
}

.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: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-hover) 0%, var(--secondary-color) 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
    color: white;
}

.btn-outline-primary {
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    background: transparent;
}

.btn-outline-primary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}
.btn-outline-success {
    color: var(--success-color);
    border: 2px solid var(--success-color);
    background: transparent;
}
.btn-outline-success:hover {
    background: var(--success-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}
.btn-outline-danger {
    color: var(--danger-color);
    border: 2px solid var(--danger-color);
    background: transparent;
}
.btn-outline-danger:hover {
    background: var(--danger-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}
.btn-success {
    background: linear-gradient(135deg, var(--success-color) 0%, #059669 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.4);
    color: white;
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-color) 0%, #dc2626 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(239, 68, 68, 0.4);
    color: white;
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, #d97706 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
}

.btn-warning:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(245, 158, 11, 0.4);
    color: white;
}

.btn-info {
    background: linear-gradient(135deg, var(--info-color) 0%, #1d4ed8 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.btn-info:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
    color: white;
}

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

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

/* Table styling */
.table {
    border-collapse: separate;
    border-spacing: 0;
    width: 100%;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid #ddd;
}

.table thead {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

.table th {
    background: transparent;
    color: white;
    font-weight: 600;
    text-transform: uppercase;
    font-size: var(--font-size-xs);
    letter-spacing: 1px;
    padding: var(--spacing-lg);
    padding:10px;
    border: none;
    position: relative;
}

.table th:first-child {
    border-top-left-radius: var(--border-radius);
}

.table th:last-child {
    border-top-right-radius: var(--border-radius);
}

.table td {
    padding: var(--spacing-sm);
    vertical-align: middle;
    border-bottom: 1px solid var(--border-color);
    color: var(--medium-text);
    font-weight: 500;
}

.table tbody tr {
    transition: var(--transition);
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: rgba(102, 126, 234, 0.02);
}

.table-hover tbody tr:hover {
    background: linear-gradient(135deg, var(--primary-light) 0%, rgba(102, 126, 234, 0.05) 100%);
    box-shadow: var(--box-shadow-sm);
}

/* Form controls */
.form-control, .form-select {
    border-radius: var(--border-radius-sm);
    border: 2px solid var(--border-color);
    transition: var(--transition);
    font-size: var(--font-size-base);
    background-color: var(--card-bg);
    color: var(--dark-text);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(102, 126, 234, 0.15);
    outline: none;
    background-color: var(--card-bg);
}

.form-label {
    font-weight: 600;
    color: var(--dark-text);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.input-group {
    position: relative;
}

.input-group .form-control {
    border-radius: var(--border-radius-sm) 0 0 var(--border-radius-sm);
}

.input-group-text {
    background: linear-gradient(135deg, var(--gray-bg) 0%, #e2e8f0 100%);
    border: 2px solid var(--border-color);
    border-left: none;
    border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
    color: var(--medium-text);
    font-weight: 500;
}

/* Alert styling */
.alert {
    border-radius: var(--border-radius);
    border: none;
    box-shadow: var(--box-shadow-sm);
    padding: var(--spacing-lg);
    position: relative;
    overflow: hidden;
}

.alert::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
}

.alert-success {
    background: linear-gradient(135deg, var(--success-light) 0%, rgba(209, 250, 229, 0.8) 100%);
    color: var(--success-color);
    border-left: 4px solid var(--success-color);
}

.alert-success::before {
    background: var(--success-color);
}

.alert-danger {
    background: linear-gradient(135deg, var(--danger-light) 0%, rgba(254, 226, 226, 0.8) 100%);
    color: var(--danger-color);
    border-left: 4px solid var(--danger-color);
}

.alert-danger::before {
    background: var(--danger-color);
}

.alert-warning {
    background: linear-gradient(135deg, var(--warning-light) 0%, rgba(254, 243, 199, 0.8) 100%);
    color: #92400e;
    border-left: 4px solid var(--warning-color);
}

.alert-warning::before {
    background: var(--warning-color);
}

.alert-info {
    background: linear-gradient(135deg, var(--info-light) 0%, rgba(219, 234, 254, 0.8) 100%);
    color: var(--info-color);
    border-left: 4px solid var(--info-color);
}

.alert-info::before {
    background: var(--info-color);
}

/* Badge styling */
.badge {
    font-weight: 600;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 50px;
    text-transform: uppercase;
    font-size:13px;
    letter-spacing: 0.5px;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
        white-space: normal;
    line-height: normal;
}

.badge-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    color: white;
}

.badge-success {
    background: linear-gradient(135deg, var(--success-color) 0%, #059669 100%);
    color: white;
}

.badge-danger {
    background: linear-gradient(135deg, var(--danger-color) 0%, #dc2626 100%);
    color: white;
}

.badge-warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, #d97706 100%);
    color: white;
}

.badge-info {
    background: linear-gradient(135deg, var(--info-color) 0%, #1d4ed8 100%);
    color: white;
}

.badge-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.7rem;
}

/* Domain card styling */
.domain-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-sm);
}

.domain-card {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-sm);
    transition: var(--transition);
    background: var(--card-bg);
    position: relative;
    overflow: hidden;
}

.domain-card:hover {
    box-shadow: var(--box-shadow-lg);
    transform: translateY(-5px) scale(1.02);
    border: 2px solid var(--primary-color);
}

.domain-card {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}
.view-rules {
    padding: 5px;
}
.zone-bage {
    border: 1px solid #6e63c4;
    border-radius: 10px;
}
.domain-info {
    flex-direction: column;
    gap: var(--spacing-sm);
}

.domain-name {
    font-weight: 700;
    font-size: var(--font-size-lg);
    color: var(--dark-text);
    margin: 0;
    line-height: 1.2;
}

.domain-actions {
    display: flex;
    gap: var(--spacing-xs);
    align-items: flex-start;
    margin-left: var(--spacing-md);
    flex-shrink: 0;
}

/* Breadcrumb styling */
.breadcrumb {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(248, 250, 252, 0.9) 100%);
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-sm);
    border: 1px solid var(--border-color);
}

.breadcrumb-item {
    font-weight: 500;
    color: var(--medium-text);
}

.breadcrumb-item.active {
    color: var(--primary-color);
    font-weight: 600;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: "›";
    font-size: var(--font-size-lg);
    line-height: 1;
    vertical-align: middle;
    color: var(--light-text);
    margin: 0 var(--spacing-sm);
}

.breadcrumb-item a {
    color: var(--medium-text);
    text-decoration: none;
    transition: var(--transition);
}

.breadcrumb-item a:hover {
    color: var(--primary-color);
}

/* Modal styling */
.modal-backdrop {
    background-color: var(--overlay-bg);
    backdrop-filter: blur(4px);
}
.modal-dialog.modal-lg {
    height: 95vh;
    display: flex;
    justify-content: center;
    align-items: center;
}
.modal-content {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow-lg);
    overflow: hidden;
    background: var(--card-bg);
}

.modal-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: var(--spacing-lg);
    border-bottom: none;
}
.modal-header h5 {color:#fff}
.modal-title {
    font-weight: 700;
    font-size: var(--font-size-xl);
}

.modal-body {
    padding: 20px;
    color: var(--medium-text);
}

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

.btn-close {
    background: none;
    border: none;
    color: white;
    opacity: 0.8;
    font-size: var(--font-size-lg);
    transition: var(--transition);
}

.btn-close:hover {
    opacity: 1;
    transform: scale(1.1);
}

/* Footer styling */
footer {
    background: linear-gradient(135deg, var(--card-bg) 0%, var(--gray-bg) 100%);
    border-top: 1px solid var(--border-color);
    padding: 25px 0;
    margin-top: var(--spacing-2xl);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.05);
}

.footer-content {
    text-align: center;
    color: var(--light-text);
    font-weight: 500;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.footer-links a {
    color: var(--medium-text);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-color);
}

/* Custom page styles */
.page-header {
    background: linear-gradient(135deg, var(--card-bg) 0%, var(--primary-light) 100%);
    padding: var(--spacing-2xl) 0;
    box-shadow: var(--box-shadow-sm);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--spacing-xl);
}

.page-title {
    font-weight: 700;
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-sm);
    color: var(--dark-text);
    text-align: center;
}

.page-subtitle {
    font-size: var(--font-size-lg);
    color: var(--medium-text);
    text-align: center;
    font-weight: 400;
}

/* Container improvements */
.container, .container-fluid {
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
}

/* Dashboard Sidebar Styles */
        .dashboard-wrapper {
            display: flex;
            min-height: 100vh;
        }
        
        .sidebar {
            width: 280px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            position: fixed;
            height: 100vh;
            left: 0;
            top: 0;
            z-index: 1000;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        
        .sidebar.collapsed {
            width: 70px;
        }
        
        .sidebar.collapsed .sidebar-toggle {
            position: absolute;
            right: -45px;
            top: 15px;
            background: #667eea;
            border-radius: 50%;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
            z-index: 1001;
            border: 2px solid white;
        }
        
        .sidebar.collapsed .sidebar-toggle:hover {
            background: #5a67d8;
            transform: scale(1.1);
        }
        
        .sidebar-header {
            padding: 10px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-shrink: 0;
        }
        
        .sidebar-brand {
            display: flex;
            align-items: center;
            text-decoration: none;
            color: white;
        }
        
        .sidebar-brand img {
            height: 60px;
            filter: brightness(0) invert(1);
            transition: all 0.3s ease;
        }
        
        .sidebar.collapsed .sidebar-brand img {
            content: url('https://sodo66t.it.com/images/NUVO%20HUB%20512x512.png');
            height: 50px;
            width: 50px;
            object-fit: contain;
        }
        
        .sidebar-brand-text {
            margin-left: 10px;
            font-weight: 600;
            font-size: 1.1rem;
        }
        
        .sidebar-toggle {
            background: none;
            border: none;
            color: #ffffff;
            font-size: 18px;
            cursor: pointer;
            border-radius: 4px;
            transition: all 0.3s ease;
            display: block; /* Hiển thị mặc định trên desktop */
        }
        
        .sidebar-toggle i {
            transition: transform 0.3s ease;
        }
        
        .sidebar-toggle:hover {
            background: rgba(255,255,255,0.1);
        }
        
        .sidebar-menu {
            padding: 1rem 0;
        }
        
        .sidebar-menu-link {
            display: flex;
            align-items: center;
            padding: 0.75rem 1rem;
            color: rgba(255,255,255,0.8);
            text-decoration: none;
            border-radius: 0.5rem;
            transition: all 0.3s ease;
            position: relative;
        }
        
        .sidebar-menu-link:hover,
        .sidebar-menu-link.active {
            background: rgba(255,255,255,0.1);
            color: white;
            transform: translateX(5px);
        }
        
        .sidebar-menu-link i {
            width: 20px;
            text-align: center;
            margin-right: 0.75rem;
            font-size: 1.1rem;
        }
        
        .sidebar-menu-text {
            font-weight: 500;
        }
        
         /* Dropdown submenu styles */
        .sidebar-menu-item.has-submenu {
            position: relative;
        }
        
        .sidebar-menu-item.has-submenu > .sidebar-menu-link::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            right: 1rem;
            transition: transform 0.3s ease;
        }
        
        .sidebar-menu-item.has-submenu.open > .sidebar-menu-link::after {
            transform: rotate(180deg);
        }
        
        .sidebar-submenu {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            background: rgba(0, 0, 0, 0.1);
            margin-left: 1rem;
            border-radius: 0.5rem;
        }
        
        .sidebar-menu-item.has-submenu.open .sidebar-submenu,
        .sidebar-menu-item.has-submenu:hover .sidebar-submenu {
            max-height: 500px;
        }
        
        .sidebar-submenu-item {
            padding: 0;
        }
        
        .sidebar-submenu-link {
            display: flex;
            align-items: center;
            padding: 0.5rem 1rem;
            color: rgba(255,255,255,0.7);
            text-decoration: none;
            transition: all 0.3s ease;
            font-size: 0.9rem;
        }
        
        .sidebar-submenu-link:hover {
            background: rgba(255,255,255,0.1);
            color: white;
        }
        
        .sidebar-submenu-link i {
            width: 16px;
            text-align: center;
            margin-right: 0.5rem;
            font-size: 0.9rem;
        }
        
        /* Collapsed sidebar submenu adjustments */
        .sidebar.collapsed .sidebar-menu-item.has-submenu > .sidebar-menu-link::after {
            display: none;
        }
        
        .sidebar.collapsed .sidebar-submenu {
            display: none;
        }
        .sidebar-user {
            margin-top: auto;
            padding: 1rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            flex-shrink: 0;
        }
        
        .sidebar-user-info {
            display: flex;
            align-items: center;
            padding: 0.75rem;
            background: rgba(255,255,255,0.1);
            border-radius: 0.5rem;
            margin-bottom: 0.5rem;
        }
        .sidebar.collapsed .sidebar-user-info .sidebar-user-avatar {
    background: none;
}
        .sidebar-user-avatar {
            width: 40px;
            height: 40px;
            background: rgba(255,255,255,0.2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 0.75rem;
        }
        
        .sidebar-user-details h6 {
            margin: 0;
            font-size: 0.9rem;
            font-weight: 600;
        }
        
        .sidebar-user-details small {
            color: rgba(255,255,255,0.7);
        }
        
        .main-content {
            margin-left: 280px;
            flex: 1;
            background: #f8f9fa;
            min-height: 100vh;
            transition: all 0.3s ease;
        }
        
        .main-content.expanded {
            margin-left:70px;
        }
        
        .top-navbar {
            background: white;
            padding: 1rem 2rem;
            border-bottom: 1px solid #e9ecef;
            display: flex;
            align-items: center;
            justify-content: space-between;
            position: sticky;
            top: 0;
            z-index: 999;
        }
        
        .content-area {
            padding: 1rem;
        }
        
        /* Responsive */
        @media (max-width: 768px) {
            .top-navbar {padding:5px}
            .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            transform: translateX(-100%);
            overflow-y: auto; /* Toàn bộ sidebar có thể cuộn */
            height: 100vh;
            padding-bottom: 0;
            max-height: 100vh;/* Loại bỏ padding bottom */
            z-index: 1000; /* Đảm bảo sidebar luôn ở trên */
        }
            .badge {font-size:8px}
            .sidebar.show {
                transform: translateX(0);
            }
            .sidebar.collapsed {width:0}
            .main-content {
                margin-left: 0;
                width: 100%;
            }
            .content-area {padding:10px}
            .mobile-menu-btn {
                display: block !important;
            }
            
            /* Ẩn sidebar-toggle trên mobile để tránh đè lên mobile-menu-btn */
            .sidebar-toggle {
                display: none !important;
            }
            
            /* Layout tối ưu cho mobile - không dùng flexbox phức tạp */
            .sidebar-header {
                position: sticky;
                top: 0;
                z-index: 10;
                background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            }
            .sidebar-brand img {height:39px}
            /* Menu items với spacing tốt hơn */
            .sidebar-menu {
                padding: 10px 0;
            }
            
            .sidebar-menu-item {
                margin-bottom: 0.25rem;
            }
            
            .sidebar-menu-link {
                padding: 6px 12px;
                font-size: 13px;
                border-radius: 0.5rem;
                margin: 0 10px;
                min-height: 39px; /* Đảm bảo touch target đủ lớn */
                display: flex;
                align-items: center;
            }
            
            .sidebar-menu-link i {
                width: 15px;
                font-size: 13px;
                margin-right: 0.875rem;
                flex-shrink: 0;
            }
            
            .sidebar-menu-text {
                white-space: nowrap;
            }
            
            /* Submenu styles for mobile */
            .sidebar-submenu {
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.3s ease;
                background: rgba(0, 0, 0, 0.1);
                margin-left: 1rem;
                border-radius: 0.5rem;
            }
            
            .sidebar-menu-item.has-submenu.open .sidebar-submenu {
                max-height: 500px;
            }
                      
            /* Ensure submenu closes when not open on mobile */
            .sidebar-menu-item.has-submenu:not(.open) .sidebar-submenu {
                max-height: 0 !important;
            }
                        
            .sidebar-submenu-link {
                padding: 0.4rem 0.8rem;
                font-size: 12px;
                min-height: 35px;
            }
            
            /* User section ở cuối, không sticky */
            .sidebar-user {
                padding: 10px;
                border-top: 1px solid rgba(255,255,255,0.1);
                background: rgba(0,0,0,0.1);
            }
            .sidebar-user-avatar {
    width: 30px;
    height: 30px;}
    .sidebar-user-details h6 {
    font-size: 13px;
}
            .sidebar-user-info {padding:6px;}
            
            .sidebar.collapsed .sidebar-menu-item {
                display: none;
            }
            
            .sidebar.collapsed .sidebar-user {
                display: none;
            }
        
        }
        
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: #495057;
        }
        
        /* Collapsed sidebar styles */
        .sidebar.collapsed .sidebar-brand-text,
        .sidebar.collapsed .sidebar-menu-text,
        .sidebar.collapsed .sidebar-user-details {
            display: none;
        }
        

        /* Desktop collapsed styles */
        @media (min-width: 769px) {
            .sidebar.collapsed .sidebar-menu-link {
                justify-content: center;
                padding: 0.75rem;
            }
            
            .sidebar.collapsed .sidebar-menu-link i {
                margin-right: 0;
            }
        }
/* Zone details page */
.zone-info-card {
    border-left: 4px solid var(--primary-color);
    background: linear-gradient(135deg, var(--card-bg) 0%, var(--primary-light) 100%);
    position: relative;
    overflow: hidden;
}

.zone-info-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    transform: translate(30px, -30px);
}

.nameserver-item {
    background: linear-gradient(135deg, var(--gray-bg) 0%, #e2e8f0 100%);
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    font-family: 'Courier New', monospace;
    font-weight: 500;
}

.nameserver-item:hover {
    background: linear-gradient(135deg, var(--primary-light) 0%, rgba(102, 126, 234, 0.1) 100%);
    transform: translateX(4px);
    border-color: var(--primary-color);
}

/* Page rules styling */
.rule-item {
    border-left: 4px solid var(--accent-color);
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    background: linear-gradient(135deg, var(--card-bg) 0%, rgba(240, 147, 251, 0.05) 100%);
    border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
    padding: var(--spacing-lg);
    transition: var(--transition);
}

.rule-item:hover {
    background: linear-gradient(135deg, rgba(240, 147, 251, 0.1) 0%, rgba(240, 147, 251, 0.05) 100%);
    transform: translateX(4px);
    box-shadow: var(--box-shadow-sm);
}

.rule-pattern {
    font-family: 'Courier New', monospace;
    background-color: var(--gray-bg);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    color: var(--primary-color);
}

/* Firewall page */
.security-tab {
    background: var(--card-bg);
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    overflow: hidden;
    box-shadow: var(--box-shadow-sm);
}

.security-tab .nav-link {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-radius: 0;
    font-weight: 600;
    color: var(--medium-text);
    transition: var(--transition);
    position: relative;
    border: none;
    background: transparent;
}

.security-tab .nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--accent-color) 100%);
    transition: width 0.3s ease;
}

.security-tab .nav-link:hover::before {
    width: 100%;
}

.security-tab .nav-link.active {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border-bottom-color: transparent;
}

.security-tab .nav-link.active::before {
    width: 100%;
    background: rgba(255, 255, 255, 0.3);
}

.tab-content {
    background: var(--card-bg);
    border-radius: 0 0 var(--border-radius) var(--border-radius);
    padding: 20px;
    box-shadow: var(--box-shadow-sm);
}

/* Loading states */
.loading {
    position: relative;
    pointer-events: none;
    opacity: 0.7;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

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

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

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

.slide-in-right {
    animation: slideInRight 0.5s ease-out;
}

.slide-in-left {
    animation: slideInLeft 0.5s ease-out;
}

.pulse {
    animation: pulse 2s infinite;
}

/* Utility classes */
.text-gradient {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.bg-gradient-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

.bg-gradient-success {
    background: linear-gradient(135deg, var(--success-color) 0%, #059669 100%);
}

.bg-gradient-danger {
    background: linear-gradient(135deg, var(--danger-color) 0%, #dc2626 100%);
}

.bg-gradient-info {
    background: linear-gradient(135deg, var(--info-color) 0%, #2563eb 100%);
}

.bg-gradient-warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, #d97706 100%);
}

.shadow-hover {
    transition: var(--transition);
}

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

.glass-effect {
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.18);
}

@media (max-width: 768px) {
    :root {
        --spacing-xs: 0.25rem;
        --spacing-sm: 0.5rem;
        --spacing-md: 0.75rem;
        --spacing-lg: 1rem;
        --spacing-xl: 1.25rem;
        --spacing-2xl: 2rem;
    }
    body {
    font-size: var(--font-size-sm);
        
    }
    h1 {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.3;
}

h2 {
  font-size: 20px;
  font-weight: 600;
  line-height: 1.35;
}

h3 {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
}

h4 {
  font-size: 16px;
  font-weight: 500;
  line-height: 1.45;
}

h5, .h5 {
  font-size: 14px;
  font-weight: 500;
  line-height: 1.5;
}
    .domain-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    .col, .tab-content {padding:10px;}
    .table th, .table td {
        padding: 6px;
        font-size: var(--font-size-xs);
    }
    
    .navbar {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .page-header {
        padding: var(--spacing-xl) 0;
    }
    
    .page-title {
        font-size: var(--font-size-2xl);
    }
    
    .card-body {
        padding: var(--spacing-md);
    }
    
    .btn {
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: 10px;
    }
    
    .domain-card {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .domain-actions {
        margin-left: 0;
        justify-content: flex-start;
    }
    .group, .tk {display:none}
}

@media (max-width: 480px) {
    .container, .container-fluid {
        padding-left: var(--spacing-sm);
        padding-right: var(--spacing-sm);
    }
    
    .modal-body {
        padding: var(--spacing-lg);
    }
    
    .breadcrumb {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .footer-links {
        gap: var(--spacing-sm);
    }
}

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

::-webkit-scrollbar-track {
    background: var(--gray-bg);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    border-radius: 4px;
    transition: var(--transition);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--primary-hover) 0%, var(--secondary-color) 100%);
}

/* Analytics Dashboard Styles */
.analytics-dashboard {
    background: var(--light-bg);
    min-height: 100vh;
}

/* Analytics Filter Card */
.analytics-filter-card {
    background: var(--card-bg);
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    margin-bottom: var(--spacing-xl);
}


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

/* Zone Selection */
.zone-selection, .domain-checkbox-container {
    background: var(--light-bg);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    max-height: 300px;
    overflow-y: auto;
}

.zone-selection .form-check {
    background: white;
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.zone-selection .form-check:hover {
    border-color: var(--primary-color);
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.1);
    transform: translateY(-1px);
}

.zone-selection .form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.zone-selection .form-check-label {
    font-weight: 500;
    color: var(--dark-text);
    cursor: pointer;
    width: 100%;
}

.zone-selection .badge {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
}

/* Analytics Summary Cards */
.analytics-summary-card {
    background: var(--card-bg);
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    overflow: hidden;
    position: relative;
}

.analytics-summary-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--accent-color) 100%);
}

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

.analytics-summary-card.bg-primary::before {
    background: linear-gradient(90deg, #0d6efd 0%, #6610f2 100%);
}

.analytics-summary-card.bg-success::before {
    background: linear-gradient(90deg, #198754 0%, #20c997 100%);
}

.analytics-summary-card.bg-info::before {
    background: linear-gradient(90deg, #0dcaf0 0%, #6f42c1 100%);
}

.analytics-summary-card.bg-warning::before {
    background: linear-gradient(90deg, #ffc107 0%, #fd7e14 100%);
}

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

.analytics-summary-card h6 {
    font-size: 0.9rem;
    font-weight: 600;
    opacity: 0.9;
    margin-bottom: var(--spacing-sm);
}

.analytics-summary-card h3 {
    font-size: 2rem;
    font-weight: 700;
    margin: 0;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.analytics-summary-card i {
    opacity: 0.8;
}

/* Chart Cards */
.analytics-chart-card {
    background: var(--card-bg);
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
    margin-bottom: var(--spacing-xl);
    overflow: hidden;
}

.analytics-chart-card .card-header {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-bottom: 2px solid var(--primary-color);
    padding: var(--spacing-lg) var(--spacing-xl);
}

.analytics-chart-card .card-header h5 {
    color: var(--primary-color);
    font-weight: 600;
    margin: 0;
}

.analytics-chart-card .card-header small {
    color: var(--medium-text);
    font-size: 0.85rem;
}

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

/* Chart Container */
.chart-container {
    position: relative;
    background: white;
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.05);
}

/* Countries Table */
.countries-table {
    background: white;
    border-radius: var(--border-radius);
}

.countries-table .table {
    margin: 0;
}

.countries-table .table thead th {
    background: var(--light-bg);
    border-bottom: 2px solid var(--primary-color);
    color: var(--primary-color);
    font-weight: 600;
    padding: var(--spacing-lg);
}

.countries-table .table tbody tr {
    transition: var(--transition);
}

.countries-table .table tbody tr:hover {
    background: var(--light-bg);
    transform: scale(1.01);
}

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

/* Firewall Events */
.firewall-events-card {
    background: var(--card-bg);
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
    margin-bottom: var(--spacing-xl);
    overflow: hidden;
}

.firewall-events-card .card-header {
    background: linear-gradient(135deg, #dc3545 0%, #fd7e14 100%);
    color: white;
    padding: var(--spacing-lg) var(--spacing-xl);
}

.firewall-events-card .card-header h5 {
    margin: 0;
    font-weight: 600;
}

.firewall-events-card .table {
    margin: 0;
}

.firewall-events-card .table thead th {
    background: var(--light-bg);
    border-bottom: 2px solid #dc3545;
    color: #dc3545;
    font-weight: 600;
    padding: var(--spacing-lg);
}

.firewall-events-card .table tbody tr:hover {
    background: var(--light-bg);
}

.firewall-events-card .table tbody td {
    padding: var(--spacing-lg);
    vertical-align: middle;
}

/* Zone Details Table */
.zone-details-card {
    background: var(--card-bg);
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
    overflow: hidden;
}

.zone-details-card .card-header {
    background: linear-gradient(135deg, #6f42c1 0%, #e83e8c 100%);
    color: white;
    padding: var(--spacing-lg) var(--spacing-xl);
}

.zone-details-card .card-header h5 {
    margin: 0;
    font-weight: 600;
}

.zone-details-card .table {
    margin: 0;
}

.zone-details-card .table thead th {
    background: var(--light-bg);
    border-bottom: 2px solid #6f42c1;
    color: #6f42c1;
    font-weight: 600;
    padding: var(--spacing-lg);
    position: sticky;
    top: 0;
    z-index: 10;
}

.zone-details-card .table tbody tr {
    transition: var(--transition);
}

.zone-details-card .table tbody tr:hover {
    background: var(--light-bg);
    transform: scale(1.005);
}

.zone-details-card .table tbody td {
    padding: var(--spacing-lg);
    vertical-align: middle;
    border-bottom: 1px solid var(--border-color);
}

/* Badge Styles for Analytics */
.badge.bg-success {
    background: linear-gradient(135deg, #198754 0%, #20c997 100%) !important;
}

.badge.bg-warning {
    background: linear-gradient(135deg, #ffc107 0%, #fd7e14 100%) !important;
}

.badge.bg-danger {
    background: linear-gradient(135deg, #dc3545 0%, #e83e8c 100%) !important;
}

.badge.bg-info {
    background: linear-gradient(135deg, #0dcaf0 0%, #6f42c1 100%) !important;
}
.badge.bg-orange {
    background: linear-gradient(135deg, #ff8c00 0%, #ff6347 100%) !important;
}

/* Empty State */
.analytics-empty-state {
    text-align: center;
    padding: var(--spacing-xxl);
    color: var(--medium-text);
}

.analytics-empty-state i {
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.5;
}

.analytics-empty-state p {
    font-size: 1.1rem;
    margin: 0;
}

/* Loading State */
.analytics-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xxl);
    color: var(--primary-color);
}

.analytics-loading .spinner-border {
    width: 3rem;
    height: 3rem;
    margin-right: var(--spacing-lg);
}

/* Responsive Design for Analytics */
@media (max-width: 768px) {
    .analytics-header {
        padding: var(--spacing-lg) 0;
        margin-bottom: var(--spacing-lg);
    }
    
    .analytics-header h2 {
        font-size: 1.5rem;
    }
    
    .analytics-filter-card .card-body,
    .analytics-chart-card .card-body {
        padding: var(--spacing-lg);
    }
    
    .analytics-summary-card .card-body {
        padding: var(--spacing-lg);
    }
    
    .analytics-summary-card h3 {
        font-size: 1.5rem;
    }
    
    .zone-selection {
        padding: var(--spacing-md);
    }
    
    .zone-selection .form-check {
        padding: var(--spacing-sm);
    }
    
    .chart-container {
        padding: var(--spacing-md);
    }
    
    .countries-table .table thead th,
    .countries-table .table tbody td,
    .firewall-events-card .table thead th,
    .firewall-events-card .table tbody td,
    .zone-details-card .table thead th,
    .zone-details-card .table tbody td {
        padding: var(--spacing-md);
        font-size: 0.9rem;
    }
}

@media (max-width: 576px) {
    .analytics-summary-card h3 {
        font-size: 1.25rem;
    }
    
    .analytics-summary-card h6 {
        font-size: 0.8rem;
    }
    
    .zone-selection .form-check-label {
        font-size: 0.9rem;
    }
    
}