:root {
    --primary-color: #0078d4;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --info-color: #0dcaf0;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --light-color: #f8f9fa;
    --dark-color: #212529;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
}

.navbar-brand {
    font-weight: 600;
    font-size: 1.5rem;
}

.display-4 {
    font-weight: 700;
    color: var(--primary-color);
}

.lead {
    font-size: 1.25rem;
    font-weight: 300;
    color: var(--secondary-color);
}

.card {
    border: none;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    transition: all 0.3s ease;
}

/* File Preview Modal Styles */
.file-preview {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.file-info {
    background-color: #f8f9fa;
    border-radius: 0.375rem;
    padding: 0.75rem;
    border: 1px solid #dee2e6;
}

.code-container {
    background-color: #f8f9fa;
    border-radius: 0.375rem;
    border: 1px solid #dee2e6;
    max-height: 60vh;
    overflow-y: auto;
}

.code-container pre {
    margin: 0;
    padding: 1rem;
    white-space: pre-wrap;
    word-wrap: break-word;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.875rem;
    line-height: 1.4;
}

.code-container code {
    background-color: transparent;
    padding: 0;
    font-family: 'Courier New', Courier, monospace;
}

/* Syntax highlighting adjustments */
.hljs {
    background-color: #f8f9fa !important;
    padding: 0 !important;
}

/* Modal sizing for file preview */
.modal-xl {
    max-width: 90vw;
}

@media (max-width: 768px) {
    .modal-xl {
        max-width: 95vw;
    }
    
    .code-container {
        max-height: 50vh;
    }
    
    .code-container pre {
        font-size: 0.75rem;
        padding: 0.5rem;
    }
}

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

.component-card {
    height: 200px;
}

.component-card .card-body {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

/* Timeline Styles */
.timeline-container {
    position: relative;
    padding-left: 2rem;
}

.timeline-container::before {
    content: '';
    position: absolute;
    left: 1rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--primary-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
    padding-left: 2rem;
}

.timeline-marker {
    position: absolute;
    left: -2rem;
    top: 0.5rem;
    width: 1rem;
    height: 1rem;
    border-radius: 50%;
    border: 2px solid white;
    box-shadow: 0 0 0 2px var(--primary-color);
}

.timeline-content {
    background: white;
    padding: 1.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.timeline-content h5 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

/* Button Styles */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: #106ebe;
    border-color: #106ebe;
}

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

.btn-outline-primary:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* Icon Styles */
.fas, .fab {
    color: var(--primary-color);
}

.text-success .fas {
    color: var(--success-color) !important;
}

/* Section Spacing */
section {
    scroll-margin-top: 80px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .timeline-container {
        padding-left: 1rem;
    }
    
    .timeline-item {
        padding-left: 1.5rem;
    }
    
    .timeline-marker {
        left: -1.5rem;
    }
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

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

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Modal Customization */
.modal-header {
    background-color: var(--primary-color);
    color: white;
}

.modal-header .btn-close {
    filter: invert(1);
}

/* Code Blocks */
.code-block {
    background-color: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 0.375rem;
    padding: 1rem;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    margin: 1rem 0;
}

/* Status Indicators */
.status-indicator {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 0.5rem;
}

.status-new {
    background-color: var(--success-color);
}

.status-in-progress {
    background-color: var(--warning-color);
}

.status-completed {
    background-color: var(--info-color);
}

.status-blocked {
    background-color: var(--danger-color);
}

/* Checklist Styles */
.checklist-item {
    padding: 0.5rem 0;
    border-bottom: 1px solid #dee2e6;
}

.checklist-item:last-child {
    border-bottom: none;
}

.checklist-item .fas {
    margin-right: 0.5rem;
}

/* Progress Bars */
.progress {
    height: 0.5rem;
    background-color: #e9ecef;
}

.progress-bar {
    background-color: var(--primary-color);
}

/* Utility Classes */
.text-primary {
    color: var(--primary-color) !important;
}

.bg-primary {
    background-color: var(--primary-color) !important;
}

.border-primary {
    border-color: var(--primary-color) !important;
}

.shadow-sm {
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075) !important;
}

.shadow {
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15) !important;
}

.rounded-lg {
    border-radius: 0.5rem !important;
}

.fw-600 {
    font-weight: 600 !important;
}

.fw-700 {
    font-weight: 700 !important;
}