/* VXLAN.guru Custom Styles */

:root {
    --primary-color: #20c997;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --danger-color: #dc3545;
    --dark-color: #343a40;
    --light-color: #f8f9fa;
    --vxlan-accent: #00d4aa;
    --vxlan-secondary: #4a90e2;
}

/* Global Styles */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

.navbar {
    background: linear-gradient(135deg, var(--primary-color), var(--vxlan-accent)) !important;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: bold;
    color: white !important;
}

.navbar-brand:hover {
    color: #f8f9fa !important;
}

.nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
    transition: color 0.3s ease;
}

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

/* Sidebar Styles */
.sidebar {
    background: linear-gradient(180deg, #ffffff, #f8f9fa);
    border-right: 1px solid #dee2e6;
    box-shadow: 2px 0 5px rgba(0,0,0,0.1);
    height: calc(100vh - 56px);
    overflow-y: auto;
}

.accordion-button {
    background-color: #f8f9fa;
    border: none;
    color: #495057;
    font-weight: 500;
    padding: 0.75rem 1rem;
}

.accordion-button:not(.collapsed) {
    background: linear-gradient(135deg, var(--primary-color), var(--vxlan-accent));
    color: white;
    box-shadow: none;
}

.accordion-button:focus {
    box-shadow: none;
}

.accordion-body {
    background-color: white;
}

.sidebar .nav-pills .nav-link {
    color: #495057 !important;
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.sidebar .nav-pills .nav-link:hover {
    color: var(--primary-color) !important;
    background-color: #e9ecef !important;
    border-left-color: var(--primary-color);
}

.sidebar .nav-pills .nav-link.active {
    color: var(--primary-color) !important;
    background-color: rgba(32, 201, 151, 0.1) !important;
    border-left-color: var(--primary-color);
    font-weight: 500;
}

/* Content Styles */
.content-section {
    padding: 2rem 0;
}

.content-section h1 {
    color: var(--primary-color);
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.content-section h2 {
    color: var(--dark-color);
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 1rem;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
}

.content-section h3 {
    color: var(--vxlan-secondary);
    font-weight: 600;
    margin-top: 1.5rem;
    margin-bottom: 1rem;
}

/* Alert Styles */
.alert {
    border-radius: 0.75rem;
    border: none;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.alert-info {
    background: linear-gradient(135deg, #e7f3ff, #cce7ff);
    border-left: 4px solid var(--info-color);
}

.alert-success {
    background: linear-gradient(135deg, #d4edda, #c3e6cb);
    border-left: 4px solid var(--success-color);
}

.alert-warning {
    background: linear-gradient(135deg, #fff3cd, #ffeaa7);
    border-left: 4px solid var(--warning-color);
}

.alert-danger {
    background: linear-gradient(135deg, #f8d7da, #f5c6cb);
    border-left: 4px solid var(--danger-color);
}

/* Code Blocks */
.config-block {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    border-radius: 0.75rem;
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-left: 4px solid var(--primary-color);
}

.config-block h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

pre {
    background-color: #2d3748;
    border-radius: 0.5rem;
    padding: 1rem;
    overflow-x: auto;
}

code {
    background-color: #f8f9fa;
    padding: 0.2rem 0.4rem;
    border-radius: 0.25rem;
    font-size: 0.9em;
}

/* Table Styles */
.table {
    background-color: white;
    border-radius: 0.75rem;
    overflow: hidden;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.table thead th {
    background: linear-gradient(135deg, var(--primary-color), var(--vxlan-accent));
    color: white;
    border: none;
    font-weight: 600;
}

.table tbody tr:hover {
    background-color: rgba(32, 201, 151, 0.05);
}

/* State Diagram */
.state-diagram {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin: 2rem 0;
    padding: 1.5rem;
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    border-radius: 0.75rem;
    border: 2px solid var(--primary-color);
}

.state {
    background: linear-gradient(135deg, var(--primary-color), var(--vxlan-accent));
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 2rem;
    font-weight: 600;
    text-align: center;
    min-width: 120px;
    box-shadow: 0 0.25rem 0.5rem rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.state:hover {
    transform: translateY(-2px);
}

.state.active {
    background: linear-gradient(135deg, var(--warning-color), #ff9500);
    animation: pulse 2s infinite;
}

.state-arrow {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: bold;
}

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

/* Navigation Buttons */
.nav-buttons {
    text-align: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid #dee2e6;
}

.btn {
    border-radius: 0.5rem;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--vxlan-accent));
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--vxlan-accent), var(--primary-color));
    transform: translateY(-2px);
    box-shadow: 0 0.25rem 0.5rem rgba(0, 0, 0, 0.15);
}

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

.btn-outline-primary:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--vxlan-accent));
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

/* Card Styles */
.card {
    border-radius: 0.75rem;
    border: 1px solid #dee2e6;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

.card-header {
    background: linear-gradient(135deg, var(--primary-color), var(--vxlan-accent));
    color: white;
    border-radius: 0.75rem 0.75rem 0 0 !important;
    font-weight: 600;
}

/* VXLAN Specific Styles */
.vxlan-header {
    background: linear-gradient(135deg, var(--primary-color), var(--vxlan-accent));
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    display: inline-block;
    margin: 0.25rem;
    font-weight: 500;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.1);
}

.vni-badge {
    background: linear-gradient(135deg, var(--vxlan-secondary), var(--info-color));
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.9rem;
    font-weight: 500;
}

.vtep-node {
    background: linear-gradient(135deg, var(--success-color), var(--primary-color));
    color: white;
    padding: 0.75rem;
    border-radius: 0.5rem;
    text-align: center;
    font-weight: 600;
    box-shadow: 0 0.25rem 0.5rem rgba(0, 0, 0, 0.1);
}

.encapsulation-layer {
    border: 2px solid var(--primary-color);
    border-radius: 0.5rem;
    padding: 1rem;
    margin: 0.5rem 0;
    background: linear-gradient(135deg, rgba(32, 201, 151, 0.1), rgba(0, 212, 170, 0.1));
}

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100vh;
        z-index: 1000;
        transition: left 0.3s ease;
    }
    
    .sidebar.show {
        left: 0;
    }
    
    .state-diagram {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .state {
        min-width: 100px;
        font-size: 0.9rem;
    }
    
    .state-arrow {
        transform: rotate(90deg);
    }
    
    .content-section h1 {
        font-size: 2rem;
    }
    
    .content-section h2 {
        font-size: 1.5rem;
    }
}

/* Tool Styles */
.tool-section {
    background: white;
    border-radius: 0.75rem;
    padding: 2rem;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.tool-input {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    border-radius: 0.5rem;
    padding: 1rem;
    margin: 1rem 0;
}

.tool-output {
    background: linear-gradient(135deg, #e8f5e8, #d4edda);
    border-radius: 0.5rem;
    padding: 1rem;
    margin: 1rem 0;
    border-left: 4px solid var(--success-color);
}

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

.content-section {
    animation: fadeIn 0.6s ease-out;
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    body {
        background-color: #1a1a1a;
        color: #e9ecef;
    }
    
    .sidebar {
        background: linear-gradient(180deg, #2d3748, #1a202c);
        border-right: 1px solid #4a5568;
    }
    
    .accordion-button {
        background-color: #2d3748;
        color: #e9ecef;
    }
    
    .accordion-body {
        background-color: #1a202c;
    }
    
    .card {
        background-color: #2d3748;
        border-color: #4a5568;
    }
    
    .table {
        background-color: #2d3748;
        color: #e9ecef;
    }
    
    .config-block {
        background: linear-gradient(135deg, #2d3748, #1a202c);
    }
}