/* Modern VoIP Router Design System */

:root {
    /* Modern color palette */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #8b5cf6;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #06b6d4;
    --dark: #1e293b;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Border radius */
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(180deg, var(--gray-50) 0%, var(--gray-100) 100%);
    color: var(--gray-800);
    min-height: 100vh;
    line-height: 1.6;
}

[x-cloak] {
    display: none !important;
}

/* Modern Navbar */
.navbar {
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    padding: 0.75rem 0;
    box-shadow: var(--shadow-sm);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary) !important;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: transform var(--transition-base);
}

.navbar-brand:hover {
    transform: translateX(2px);
}

.navbar-brand i {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-link {
    color: var(--gray-600) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    border-radius: var(--radius);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary);
    transform: translateX(-50%);
    transition: width var(--transition-base);
}

.nav-link:hover {
    color: var(--primary) !important;
    background: var(--gray-50);
}

.nav-link.active {
    color: var(--primary) !important;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white !important;
}

.nav-link.active i {
    color: white !important;
}

.navbar-text {
    color: var(--gray-600);
    font-weight: 500;
}

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

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

.card-header {
    background: linear-gradient(135deg, var(--gray-50) 0%, white 100%);
    border-bottom: 1px solid var(--gray-200);
    padding: 1.25rem;
    font-weight: 600;
}

.card-body {
    padding: 1.5rem;
}

/* Dashboard Cards */
.dashboard-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
    box-shadow: var(--shadow);
}

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

.dashboard-card:hover {
    box-shadow: var(--shadow-xl);
}

.dashboard-card h5 {
    color: var(--gray-600);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.dashboard-card h2 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--gray-800) 0%, var(--gray-600) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.dashboard-card small {
    color: var(--gray-500);
    font-size: 0.875rem;
}

/* Color variations for dashboard cards */
.dashboard-card.primary::before { background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%); }
.dashboard-card.success::before { background: linear-gradient(90deg, var(--success) 0%, #34d399 100%); }
.dashboard-card.info::before { background: linear-gradient(90deg, var(--info) 0%, #22d3ee 100%); }
.dashboard-card.warning::before { background: linear-gradient(90deg, var(--warning) 0%, #fbbf24 100%); }
.dashboard-card.danger::before { background: linear-gradient(90deg, var(--danger) 0%, #f87171 100%); }
.dashboard-card.secondary::before { background: linear-gradient(90deg, var(--secondary) 0%, #a78bfa 100%); }

/* Modern Tables */
.table {
    border-collapse: separate;
    border-spacing: 0;
}

.table thead th {
    background: var(--gray-50);
    color: var(--gray-700);
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 1rem;
    border-bottom: 2px solid var(--gray-200);
    white-space: nowrap;
    position: sticky;
    top: 0;
    z-index: 10;
}

.table thead th[onclick], 
.table thead th[style*="cursor: pointer"] {
    cursor: pointer;
    user-select: none;
    transition: all var(--transition-base);
}

.table thead th[onclick]:hover,
.table thead th[style*="cursor: pointer"]:hover {
    background: var(--gray-100);
    color: var(--primary);
}

.table tbody tr {
    transition: all var(--transition-base);
    border-bottom: 1px solid var(--gray-100);
}

.table tbody tr:hover {
    background: var(--gray-50);
    box-shadow: var(--shadow-sm);
}

.table tbody td {
    padding: 1rem;
    color: var(--gray-700);
    vertical-align: middle;
}

.table-responsive {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}

/* Modern Badges */
.badge {
    font-weight: 600;
    padding: 0.375rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    letter-spacing: 0.025em;
    text-transform: uppercase;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.bg-primary { background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%) !important; }
.bg-success { background: linear-gradient(135deg, var(--success) 0%, #34d399 100%) !important; }
.bg-info { background: linear-gradient(135deg, var(--info) 0%, #22d3ee 100%) !important; }
.bg-warning { background: linear-gradient(135deg, var(--warning) 0%, #fbbf24 100%) !important; color: white !important; }
.bg-danger { background: linear-gradient(135deg, var(--danger) 0%, #f87171 100%) !important; }
.bg-secondary { background: linear-gradient(135deg, var(--gray-500) 0%, var(--gray-400) 100%) !important; }

/* Modern Buttons */
.btn {
    font-weight: 600;
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius);
    border: none;
    transition: all var(--transition-base);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    letter-spacing: 0.025em;
    box-shadow: var(--shadow-sm);
}

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

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

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

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

.btn-secondary {
    background: var(--gray-200);
    color: var(--gray-700);
}

.btn-secondary:hover {
    background: var(--gray-300);
    color: var(--gray-800);
}

.btn-success {
    background: linear-gradient(135deg, var(--success) 0%, #34d399 100%);
    color: white;
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger) 0%, #f87171 100%);
    color: white;
}

.btn-info {
    background: linear-gradient(135deg, var(--info) 0%, #22d3ee 100%);
    color: white;
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning) 0%, #fbbf24 100%);
    color: white;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

.btn-outline-secondary {
    background: transparent;
    border: 2px solid var(--gray-300);
    color: var(--gray-600);
}

.btn-outline-secondary:hover {
    background: var(--gray-100);
    border-color: var(--gray-400);
    color: var(--gray-700);
}

.btn-outline-light {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    color: white;
}

/* Modern Forms */
.form-label {
    color: var(--gray-700);
    font-weight: 600;
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
    display: block;
    letter-spacing: 0.025em;
}

.form-control,
.form-select {
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 0.625rem 0.875rem;
    font-size: 0.875rem;
    transition: all var(--transition-base);
    background: white;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    outline: none;
}

.form-control::placeholder {
    color: var(--gray-400);
}

.input-group {
    position: relative;
    display: flex;
    align-items: stretch;
    width: 100%;
}

.input-group .form-control {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}

.input-group .btn {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

.input-group-text {
    background: var(--gray-100);
    border: 2px solid var(--gray-200);
    border-left: none;
    color: var(--gray-600);
    padding: 0.625rem 0.875rem;
    font-size: 0.875rem;
}

.form-check-input {
    width: 1.25rem;
    height: 1.25rem;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
}

.form-check-input:checked {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-color: var(--primary);
}

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

.modal-header {
    background: linear-gradient(135deg, var(--gray-50) 0%, white 100%);
    border-bottom: 1px solid var(--gray-200);
    padding: 1.5rem;
}

.modal-title {
    font-weight: 700;
    color: var(--gray-800);
    font-size: 1.25rem;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    background: var(--gray-50);
    border-top: 1px solid var(--gray-200);
    padding: 1rem 1.5rem;
}

/* Login Page */
.login-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.login-overlay::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    animation: backgroundMove 20s linear infinite;
}

@keyframes backgroundMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(-30px, -30px); }
}

.login-overlay .card {
    position: relative;
    z-index: 1;
    animation: slideInUp 0.5s ease-out;
}

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

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

.page-link {
    border: none;
    color: var(--gray-600);
    font-weight: 500;
    padding: 0.5rem 0.875rem;
    border-radius: var(--radius);
    transition: all var(--transition-base);
}

.page-link:hover {
    background: var(--gray-100);
    color: var(--primary);
}

.page-item.active .page-link {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: white;
}

.page-item.disabled .page-link {
    color: var(--gray-400);
    background: var(--gray-50);
}

/* Loading & Spinners */
.spinner-border {
    border-width: 3px;
}

.spinner-border-sm {
    width: 1rem;
    height: 1rem;
    border-width: 2px;
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

/* Sort Indicators */
.sort-indicator {
    display: inline-block;
    margin-left: 0.5rem;
    opacity: 0.5;
    transition: opacity var(--transition-base);
}

th:hover .sort-indicator {
    opacity: 1;
}

.sorted-asc::after,
.sorted-desc::after {
    content: '';
    display: inline-block;
    width: 0;
    height: 0;
    margin-left: 0.5rem;
    vertical-align: middle;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
}

.sorted-asc::after {
    border-bottom: 6px solid var(--primary);
}

.sorted-desc::after {
    border-top: 6px solid var(--primary);
}

/* Alerts */
.alert {
    border: none;
    border-radius: var(--radius);
    padding: 1rem 1.25rem;
    font-size: 0.875rem;
    box-shadow: var(--shadow-sm);
}

.alert-info {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.1) 0%, rgba(34, 211, 238, 0.1) 100%);
    color: var(--info);
    border-left: 4px solid var(--info);
}

.alert-danger {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1) 0%, rgba(248, 113, 113, 0.1) 100%);
    color: var(--danger);
    border-left: 4px solid var(--danger);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
    border-radius: var(--radius);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-400);
    border-radius: var(--radius);
    transition: background var(--transition-base);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-500);
}

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

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.fade-in {
    animation: fadeIn var(--transition-base);
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1.25rem;
    }
    
    .dashboard-card h2 {
        font-size: 2rem;
    }
    
    .table {
        font-size: 0.8125rem;
    }
    
    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.8125rem;
    }
}

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

.hover-scale {
    transition: transform var(--transition-base);
}

.hover-scale:hover {
    transform: scale(1.05);
}

.glass-effect {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Call Status Colors */
.status-answer { 
    background: linear-gradient(135deg, var(--success) 0%, #34d399 100%) !important; 
}
.status-busy { 
    background: linear-gradient(135deg, var(--warning) 0%, #fbbf24 100%) !important; 
}
.status-noanswer { 
    background: linear-gradient(135deg, var(--gray-500) 0%, var(--gray-400) 100%) !important; 
}
.status-cancel { 
    background: linear-gradient(135deg, var(--danger) 0%, #f87171 100%) !important; 
}
.status-congestion { 
    background: linear-gradient(135deg, #fd7e14 0%, #fb923c 100%) !important; 
}

/* Sidebar Enhancements */
.sidebar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.sidebar-brand-icon {
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 0.5rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.sidebar-brand-icon svg {
    width: 1rem;
    height: 1rem;
    color: white;
}

.sidebar-brand-text {
    font-size: 0.9375rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Profile avatar with gradient */
.profile-avatar {
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 9999px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    font-size: 0.6875rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* Page transition */
.page-enter {
    opacity: 0;
    transform: translateY(8px);
}

.page-enter-active {
    opacity: 1;
    transform: translateY(0);
    transition: all 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Card header accent */
.card-accent {
    height: 3px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

/* Table row hover enhancement */
.table tbody tr {
    transition: all 150ms cubic-bezier(0.4, 0, 0.2, 1);
}

.table tbody tr:hover {
    background: var(--gray-50);
}

.table tbody tr:active {
    background: var(--gray-100);
}

/* Smooth snackbar animation */
.snackbar-enter {
    opacity: 0;
    transform: translateY(1rem);
}

.snackbar-enter-active {
    opacity: 1;
    transform: translateY(0);
    transition: all 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

.snackbar-leave-active {
    opacity: 0;
    transform: translateY(1rem);
    transition: all 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* App loading skeleton */
.skeleton {
    background: linear-gradient(90deg, var(--gray-100) 25%, var(--gray-50) 50%, var(--gray-100) 75%);
    background-size: 200% 100%;
    animation: skeleton-shimmer 1.5s ease-in-out infinite;
    border-radius: var(--radius);
}

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

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .sidebar {
        background: rgba(30, 41, 59, 0.95);
    }

    .table tbody tr:hover {
        background: rgba(255, 255, 255, 0.03);
    }

    .table tbody tr:active {
        background: rgba(255, 255, 255, 0.05);
    }

    .skeleton {
        background: linear-gradient(90deg, var(--gray-800) 25%, var(--gray-700) 50%, var(--gray-800) 75%);
        background-size: 200% 100%;
    }
}