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

body {
    font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: #2d3748;
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1rem;
}

.main-header {
    background: linear-gradient(135deg, #ffffff 0%, #f7fafc 50%, #edf2f7 100%);
    color: #2d3748;
    text-align: center;
    padding: 3rem 0;
    border-bottom: 1px solid #e2e8f0;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.main-header h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 0.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #4299e1 0%, #667eea 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.main-header h1 i {
    color: #4299e1;
    margin-right: 0.5rem;
}

.main-header p {
    font-size: 1.125rem;
    color: #718096;
    font-weight: 500;
}

.main-nav {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #e2e8f0;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.main-nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.nav-link {
    color: #4a5568;
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-weight: 500;
    border: 1px solid transparent;
    white-space: nowrap;
}

.nav-link:hover {
    background: linear-gradient(135deg, #ebf8ff 0%, #bee3f8 100%);
    color: #2b6cb0;
    border-color: #bee3f8;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(66, 153, 225, 0.15);
}

.nav-link.active {
    background: linear-gradient(135deg, #4299e1 0%, #3182ce 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(66, 153, 225, 0.3);
}

.main-content {
    min-height: calc(100vh - 300px);
    padding: 2rem 0;
}

.content-section {
    display: none;
    animation: fadeIn 0.5s ease-in-out;
}

.content-section.active {
    display: block;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    margin: 0.25rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    min-width: 120px;
}

.btn i {
    margin-right: 0.5rem;
    font-size: 1rem;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, #4299e1 0%, #3182ce 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(66, 153, 225, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #3182ce 0%, #2c5aa0 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(66, 153, 225, 0.4);
}

.btn-secondary {
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
    color: #4a5568;
    border: 1px solid #e2e8f0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #edf2f7 0%, #e2e8f0 100%);
    color: #2d3748;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.btn-success {
    background: linear-gradient(135deg, #48bb78 0%, #38a169 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(72, 187, 120, 0.3);
}

.btn-success:hover {
    background: linear-gradient(135deg, #38a169 0%, #2f855a 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(72, 187, 120, 0.4);
}

.btn-danger {
    background: linear-gradient(135deg, #f56565 0%, #e53e3e 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(245, 101, 101, 0.3);
}

.btn-danger:hover {
    background: linear-gradient(135deg, #e53e3e 0%, #c53030 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(245, 101, 101, 0.4);
}

.btn-warning {
    background: linear-gradient(135deg, #ed8936 0%, #dd6b20 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(237, 137, 54, 0.3);
}

.btn-warning:hover {
    background: linear-gradient(135deg, #dd6b20 0%, #c05621 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(237, 137, 54, 0.4);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

.btn:disabled::before {
    display: none;
}

.main-footer {
    background: linear-gradient(135deg, #2d3748 0%, #4a5568 100%);
    color: #e2e8f0;
    text-align: center;
    padding: 1.5rem 0;
    margin-top: 3rem;
    border-top: 1px solid #4a5568;
}

/* Success and Error States */
.success-message {
    background: linear-gradient(135deg, #f0fff4 0%, #c6f6d5 100%);
    color: #22543d;
    padding: 1rem;
    border-radius: 8px;
    border-left: 4px solid #48bb78;
    margin: 1rem 0;
    animation: slideInFromTop 0.5s ease-out;
}

.error-message {
    background: linear-gradient(135deg, #fff5f5 0%, #fed7d7 100%);
    color: #742a2a;
    padding: 1rem;
    border-radius: 8px;
    border-left: 4px solid #f56565;
    margin: 1rem 0;
    animation: slideInFromTop 0.5s ease-out;
}

.warning-message {
    background: linear-gradient(135deg, #fffbeb 0%, #fef5e7 100%);
    color: #92400e;
    padding: 1rem;
    border-radius: 8px;
    border-left: 4px solid #ed8936;
    margin: 1rem 0;
    animation: slideInFromTop 0.5s ease-out;
}

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

/* Loading States */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .container {
        padding: 0 1.5rem;
    }
}

@media (max-width: 768px) {
    .main-header {
        padding: 2rem 0;
    }
    
    .main-nav ul {
        flex-direction: column;
        align-items: center;
        gap: 0.25rem;
    }
    
    .nav-link {
        padding: 0.5rem 1rem;
        width: 100%;
        max-width: 200px;
        text-align: center;
    }
    
    .btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.8rem;
        min-width: 100px;
    }
    
    .main-content {
        padding: 1.5rem 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .main-header h1 {
        font-size: 1.8rem;
    }
    
    .main-header p {
        font-size: 1rem;
    }
    
    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.75rem;
        min-width: 80px;
    }
    
    .btn i {
        margin-right: 0.3rem;
        font-size: 0.9rem;
    }
}

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

/* Focus states for accessibility */
.btn:focus,
.nav-link:focus {
    outline: 2px solid #4299e1;
    outline-offset: 2px;
}

/* Notification Styles */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 16px 24px;
    border-radius: 8px;
    color: white;
    font-weight: 500;
    font-size: 14px;
    min-width: 300px;
    max-width: 500px;
    z-index: 1000;
    opacity: 0;
    transform: translateX(100%);
    transition: all 0.3s ease-in-out;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    word-wrap: break-word;
}

/* Success notification */
.notification-success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    border-left: 4px solid #047857;
}

.notification-success::before {
    content: "✓";
    margin-right: 8px;
    font-weight: bold;
}

/* Error notification */
.notification-error {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    border-left: 4px solid #b91c1c;
}

.notification-error::before {
    content: "✕";
    margin-right: 8px;
    font-weight: bold;
}

/* Info notification */
.notification-info {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    border-left: 4px solid #1d4ed8;
}

.notification-info::before {
    content: "ℹ";
    margin-right: 8px;
    font-weight: bold;
}

/* Warning notification */
.notification-warning {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    border-left: 4px solid #b45309;
}

.notification-warning::before {
    content: "⚠";
    margin-right: 8px;
    font-weight: bold;
}

/* Animation classes */
.notification.show {
    opacity: 1;
    transform: translateX(0);
}

.notification.hide {
    opacity: 0;
    transform: translateX(100%);
}

/* Hover effect */
.notification:hover {
    transform: translateX(-5px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

/* Mobile responsive */
@media (max-width: 768px) {
    .notification {
        top: 10px;
        right: 10px;
        left: 10px;
        min-width: auto;
        max-width: none;
        width: calc(100% - 20px);
        font-size: 13px;
        padding: 14px 18px;
    }
}

/* Error text styling for form outputs */
.error {
    color: #dc2626;
    background-color: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: 6px;
    padding: 12px;
    margin: 8px 0;
    font-weight: 500;
}

/* Success text styling for form outputs */
.success {
    color: #059669;
    background-color: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-radius: 6px;
    padding: 12px;
    margin: 8px 0;
    font-weight: 500;
}

/* Network Monitor Styles */
.alerts-container {
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
}

.alerts-list {
    max-height: 300px;
    overflow-y: auto;
}

.security-alert {
    border: 1px solid #ddd;
    border-radius: 6px;
    padding: 15px;
    margin-bottom: 10px;
    background: #f9f9f9;
}

.security-alert.alert-critical {
    border-left: 4px solid #dc3545;
    background: #fff5f5;
}

.security-alert.alert-warning {
    border-left: 4px solid #ffc107;
    background: #fffef5;
}

.security-alert.alert-normal {
    border-left: 4px solid #28a745;
    background: #f5fff5;
}

.alert-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    font-weight: bold;
}

.alert-severity {
    padding: 2px 8px;
    border-radius: 4px;
    color: white;
    font-size: 12px;
}

.alert-critical .alert-severity {
    background: #dc3545;
}

.alert-warning .alert-severity {
    background: #ffc107;
    color: #000;
}

.alert-normal .alert-severity {
    background: #28a745;
}

.alert-analysis {
    background: #f8f9fa;
    padding: 10px;
    border-radius: 4px;
    margin: 10px 0;
    font-family: monospace;
    font-size: 12px;
    max-height: 150px;
    overflow-y: auto;
}

.alert-actions {
    margin-top: 10px;
    display: flex;
    gap: 10px;
}

.btn-small {
    padding: 4px 8px;
    font-size: 12px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.btn-small.btn-primary {
    background: #007bff;
    color: white;
}

.btn-small.btn-secondary {
    background: #6c757d;
    color: white;
}

.network-data-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.data-stats {
    display: flex;
    gap: 20px;
    font-size: 14px;
    color: #666;
}

.network-table-container {
    max-height: 400px;
    overflow-y: auto;
    border: 1px solid #ddd;
    border-radius: 6px;
}

.network-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 12px;
}

.network-table th {
    background: #f8f9fa;
    padding: 10px 8px;
    text-align: left;
    border-bottom: 1px solid #ddd;
    position: sticky;
    top: 0;
}

.network-table td {
    padding: 8px;
    border-bottom: 1px solid #eee;
}

.network-table tr.risk-high {
    background: #fff5f5;
}

.network-table tr.risk-medium {
    background: #fffef5;
}

.network-table tr.risk-low {
    background: #f5fff5;
}

.status-badge {
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 10px;
    font-weight: bold;
}

.status-badge.status-high {
    background: #dc3545;
    color: white;
}

.status-badge.status-medium {
    background: #ffc107;
    color: #000;
}

.status-badge.status-low {
    background: #28a745;
    color: white;
}

.no-alerts {
    text-align: center;
    color: #666;
    font-style: italic;
    padding: 20px;
}

.error-message {
    color: #dc3545;
    text-align: center;
    font-style: italic;
}