:root {
    --bg-main: #0B0F19;
    --bg-card: rgba(18, 26, 43, 0.7);
    --bg-glass: rgba(22, 33, 54, 0.6);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(59, 130, 246, 0.3);
    
    --primary: #3B82F6;
    --primary-hover: #2563EB;
    --success: #10B981;
    --success-bg: rgba(16, 185, 129, 0.15);
    --warning: #F59E0B;
    --warning-bg: rgba(245, 158, 11, 0.15);
    --danger: #EF4444;
    --danger-bg: rgba(239, 68, 68, 0.15);
    --purple: #8B5CF6;
    --accent: #06B6D4;

    --text-main: #F3F4F6;
    --text-muted: #9CA3AF;
    --text-dim: #6B7280;

    --font-family: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;

    --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-family);
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* Background Ambient Glow */
.bg-glow {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    background: 
        radial-gradient(circle at 10% 20%, rgba(59, 130, 246, 0.12) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(16, 185, 129, 0.10) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(139, 92, 246, 0.08) 0%, transparent 50%);
    z-index: -1;
}

/* Glass Panels */
.glass-panel {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-glass);
}

/* Login Page Styling */
.login-body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}
.login-background-glow {
    position: absolute;
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.3) 0%, rgba(139, 92, 246, 0.1) 60%, transparent 80%);
    filter: blur(50px);
    z-index: 0;
}
.login-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 420px;
    padding: 20px;
}
.login-card {
    padding: 40px 32px;
    text-align: center;
}
.login-logo-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    background: linear-gradient(135deg, var(--primary), var(--purple));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: #fff;
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.4);
}
.login-header h2 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 6px;
}
.login-header p {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 24px;
}
.login-form .form-group {
    text-align: left;
    margin-bottom: 20px;
}
.login-footer {
    margin-top: 24px;
    font-size: 12px;
    color: var(--text-dim);
}

/* Header Navbar */
.glass-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 32px;
    margin: 16px 24px 0;
    border-radius: var(--radius-md);
}
.navbar-brand {
    display: flex;
    align-items: center;
    gap: 14px;
}
.brand-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: #fff;
}
.brand-logo-img {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid rgba(14, 165, 233, 0.4);
    box-shadow: 0 0 12px rgba(14, 165, 233, 0.3);
}
.brand-title {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.5px;
}
.brand-subtitle {
    font-size: 12px;
    color: var(--text-muted);
}
.navbar-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Main Content & Metrics Grid */
.main-content {
    padding: 24px;
    max-width: 1440px;
    margin: 0 auto;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.metric-card {
    padding: 20px;
    position: relative;
    overflow: hidden;
    transition: transform 0.2s ease, border-color 0.2s ease;
}
.metric-card:hover {
    transform: translateY(-2px);
}
.metric-card.border-green { border-left: 4px solid var(--success); }
.metric-card.border-blue { border-left: 4px solid var(--primary); }
.metric-card.border-purple { border-left: 4px solid var(--purple); }

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
}
.card-tag {
    font-size: 13px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.tag-green { background: var(--success-bg); color: var(--success); }
.tag-blue { background: rgba(59, 130, 246, 0.15); color: var(--primary); }
.tag-purple { background: rgba(139, 92, 246, 0.15); color: var(--purple); }

.pulse-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    position: relative;
}
.pulse-indicator.green { background: var(--success); box-shadow: 0 0 10px var(--success); }
.pulse-indicator.blue { background: var(--primary); box-shadow: 0 0 10px var(--primary); }
.pulse-indicator.purple { background: var(--purple); box-shadow: 0 0 10px var(--purple); }
.pulse-indicator.red { background: var(--danger); box-shadow: 0 0 10px var(--danger); }

.card-body {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}
.stat-val {
    font-size: 38px;
    font-weight: 700;
    line-height: 1;
    letter-spacing: -1px;
}
.stat-label {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
}
.stat-divider {
    width: 1px;
    height: 48px;
    background: var(--border-color);
}
.stat-sub-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 13px;
}

.card-footer-info {
    font-size: 12px;
    color: var(--text-dim);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 10px;
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Tab Navigation */
.tab-navigation {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}
.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 15px;
    font-weight: 500;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
}
.tab-btn:hover {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.04);
}
.tab-btn.active {
    color: #fff;
    background: var(--primary);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.tab-content {
    display: none;
}
.tab-content.active {
    display: block;
}

/* BGP Grid Cards */
.section-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.bgp-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 16px;
}
.bgp-card {
    padding: 16px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: transform 0.2s ease;
}
.bgp-card:hover {
    transform: translateY(-2px);
}
.bgp-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}
.bgp-name {
    font-weight: 600;
    font-size: 14px;
}
.bgp-status-badge {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 12px;
    font-weight: 700;
    text-transform: uppercase;
}
.badge-established { background: var(--success-bg); color: var(--success); border: 1px solid var(--success); }
.badge-down { background: var(--danger-bg); color: var(--danger); border: 1px solid var(--danger); }

/* Charts Layout */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(480px, 1fr));
    gap: 20px;
}
.chart-card {
    padding: 20px;
}
.chart-header h3 {
    font-size: 15px;
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.chart-container {
    position: relative;
    height: 260px;
}

/* Tables & Controls */
.table-toolbar {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}
.search-box, .filter-box {
    position: relative;
    display: flex;
    align-items: center;
}
.search-box i {
    position: absolute;
    left: 14px;
    color: var(--text-muted);
}
.search-box input {
    padding: 10px 14px 10px 38px;
    width: 300px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.2);
    color: #fff;
    font-size: 14px;
}
.filter-box select {
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background: rgba(18, 26, 43, 0.9);
    color: #fff;
    font-size: 14px;
    cursor: pointer;
}

.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}
.custom-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    text-align: left;
}
.custom-table th {
    padding: 12px 14px;
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-muted);
    font-weight: 600;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}
.custom-table td {
    padding: 12px 14px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    white-space: nowrap;
}
.custom-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

/* Badges */
.badge {
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }
.badge-info { background: rgba(59, 130, 246, 0.15); color: var(--primary); }

/* Buttons & Inputs */
.btn {
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s ease;
    text-decoration: none;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-outline { background: transparent; border: 1px solid var(--border-color); color: var(--text-main); }
.btn-outline:hover { background: rgba(255, 255, 255, 0.06); }
.btn-danger { background: var(--danger-bg); color: var(--danger); border: 1px solid var(--danger); }
.btn-secondary { background: rgba(255, 255, 255, 0.1); color: var(--text-main); }
.btn-block { width: 100%; }
.btn-icon-only { width: 40px; height: 40px; padding: 0; border-radius: var(--radius-sm); }

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.form-group label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-muted);
}
.form-group input, .form-group select {
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.3);
    color: #fff;
    font-size: 14px;
}
.form-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

/* Modal */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}
.modal-backdrop.open {
    display: flex;
}
.modal-card {
    width: 100%;
    max-width: 680px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 24px;
}
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}
.modal-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 24px;
    cursor: pointer;
}
.form-section h4 {
    font-size: 15px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}
.full-width {
    grid-column: span 2;
}

/* Switch */
.switch-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}
.switch-slider {
    width: 36px;
    height: 20px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    position: relative;
    transition: 0.2s;
}
.switch-slider::before {
    content: '';
    position: absolute;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #fff;
    top: 3px;
    left: 3px;
    transition: 0.2s;
}
input:checked + .switch-slider {
    background: var(--success);
}
input:checked + .switch-slider::before {
    transform: translateX(16px);
}

/* Alert Toast */
#toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.toast {
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    color: #fff;
    font-size: 14px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    gap: 10px;
    animation: slideIn 0.3s ease;
}
.toast-success { background: var(--success); }
.toast-danger { background: var(--danger); }

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

.text-green { color: var(--success); }
.text-blue { color: var(--primary); }
.text-purple { color: var(--purple); }
.text-accent { color: var(--accent); }
.text-warning { color: var(--warning); }
.text-danger { color: var(--danger); }
.text-muted { color: var(--text-muted); }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 14px; }
.mt-4 { margin-top: 20px; }
.p-4 { padding: 20px; }
.grid-2-col {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(480px, 1fr));
    gap: 20px;
}

/* Pagination Toolbar */
.pagination-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    padding-top: 14px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.pagination-info {
    font-size: 0.85rem;
    color: var(--text-muted);
}
.pagination-buttons {
    display: flex;
    align-items: center;
    gap: 8px;
}
.page-num-badge {
    background: rgba(255, 255, 255, 0.08);
    padding: 6px 14px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-light);
    border: 1px solid rgba(255, 255, 255, 0.1);
}
.btn-sm {
    padding: 6px 14px;
    font-size: 0.82rem;
}


/* ==========================================================================
   MOBILE RESPONSIVENESS OPTIMIZATIONS (Smartphones & Small Tablets)
   ========================================================================== */
@media (max-width: 768px) {
    .glass-header {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
        padding: 12px 16px;
        margin: 8px 8px 0;
    }
    .navbar-brand {
        justify-content: flex-start;
    }
    .brand-title {
        font-size: 16px;
    }
    .navbar-actions {
        display: grid;
        grid-template-columns: 1fr 1fr auto auto;
        gap: 6px;
        width: 100%;
    }
    .navbar-actions .btn {
        padding: 8px 10px;
        font-size: 12px;
    }
    .main-content {
        padding: 12px 8px;
    }
    .metrics-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .metric-card {
        padding: 16px;
    }
    .stat-val {
        font-size: 32px;
    }
    .card-body {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    .stat-divider {
        display: none;
    }
    .tab-navigation {
        overflow-x: auto;
        white-space: nowrap;
        padding-bottom: 8px;
        gap: 6px;
        -webkit-overflow-scrolling: touch;
    }
    .tab-btn {
        font-size: 13px;
        padding: 8px 14px;
        flex-shrink: 0;
    }
    .bgp-grid, .charts-grid, .grid-2-col {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .chart-container {
        height: 210px;
    }
    .table-toolbar {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }
    .search-box input, .filter-box select {
        width: 100%;
    }
    .form-grid {
        grid-template-columns: 1fr;
    }
    .full-width {
        grid-column: span 1;
    }
    .modal-card {
        padding: 16px;
        margin: 10px;
        max-height: 94vh;
    }
    #toast-container {
        bottom: 12px;
        right: 12px;
        left: 12px;
    }
    .toast {
        font-size: 13px;
        padding: 10px 14px;
    }
}