/**
 * CVG GitHub Portal Styles
 * Professional styling for git.cleargeo.tech
 */

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --cvg-primary: #4f46e5;
    --cvg-secondary: #7c3aed;
    --cvg-accent: #059669;
    --cvg-danger: #dc2626;
    --cvg-warning: #f59e0b;
    --cvg-success: #10b981;
    --cvg-gray-50: #f8fafc;
    --cvg-gray-100: #f1f5f9;
    --cvg-gray-200: #e2e8f0;
    --cvg-gray-300: #cbd5e1;
    --cvg-gray-400: #94a3b8;
    --cvg-gray-500: #64748b;
    --cvg-gray-600: #475569;
    --cvg-gray-700: #334155;
    --cvg-gray-800: #1e293b;
    --cvg-gray-900: #0f172a;
    
    --cvg-space-xs: 0.25rem;
    --cvg-space-sm: 0.5rem;
    --cvg-space-md: 1rem;
    --cvg-space-lg: 1.5rem;
    --cvg-space-xl: 2rem;
    --cvg-space-2xl: 3rem;
    
    --cvg-radius-sm: 4px;
    --cvg-radius-md: 8px;
    --cvg-radius-lg: 12px;
    --cvg-radius-xl: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    background: var(--cvg-gray-50);
    color: var(--cvg-gray-800);
    line-height: 1.6;
    min-height: 100vh;
}

/* Navigation Styles */
.cvg-navbar {
    background: linear-gradient(135deg, var(--cvg-primary) 0%, var(--cvg-secondary) 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.cvg-navbar-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--cvg-space-xl);
}

.cvg-logo {
    display: flex;
    align-items: center;
    gap: var(--cvg-space-md);
    color: white;
    text-decoration: none;
    font-size: 1.25rem;
    font-weight: 600;
}

.cvg-nav-links {
    display: flex;
    align-items: center;
    gap: var(--cvg-space-lg);
}

.cvg-nav-link {
    color: white;
    text-decoration: none;
    padding: var(--cvg-space-sm) var(--cvg-space-md);
    border-radius: var(--cvg-radius-md);
    transition: all 0.3s ease;
    font-weight: 500;
}

.cvg-nav-link:hover,
.cvg-nav-link.active {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
}

/* Container and Layout */
.cvg-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--cvg-space-xl);
}

/* Typography */
.cvg-text-center { text-align: center; }
.cvg-text-left { text-align: left; }
.cvg-text-right { text-align: right; }

.cvg-text-xs { font-size: 0.75rem; }
.cvg-text-sm { font-size: 0.875rem; }
.cvg-text-base { font-size: 1rem; }
.cvg-text-lg { font-size: 1.125rem; }
.cvg-text-xl { font-size: 1.25rem; }
.cvg-text-2xl { font-size: 1.5rem; }
.cvg-text-3xl { font-size: 1.875rem; }
.cvg-text-4xl { font-size: 2.25rem; }
.cvg-text-5xl { font-size: 3rem; }

.cvg-font-normal { font-weight: 400; }
.cvg-font-medium { font-weight: 500; }
.cvg-font-semibold { font-weight: 600; }
.cvg-font-bold { font-weight: 700; }

.cvg-text-primary { color: var(--cvg-primary); }
.cvg-text-secondary { color: var(--cvg-gray-500); }
.cvg-text-success { color: var(--cvg-success); }
.cvg-text-danger { color: var(--cvg-danger); }
.cvg-text-warning { color: var(--cvg-warning); }

/* Cards and Components */
.cvg-card {
    background: white;
    border-radius: var(--cvg-radius-lg);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    padding: var(--cvg-space-xl);
    margin-bottom: var(--cvg-space-lg);
}

.cvg-card h3 {
    color: var(--cvg-gray-800);
    margin-bottom: var(--cvg-space-md);
    font-size: 1.25rem;
    font-weight: 600;
}

/* Grid System */
.cvg-grid {
    display: grid;
    gap: var(--cvg-space-lg);
}

.cvg-grid-2 { grid-template-columns: repeat(2, 1fr); }
.cvg-grid-3 { grid-template-columns: repeat(3, 1fr); }
.cvg-grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Statistics Cards */
.cvg-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--cvg-space-lg);
}

.cvg-stat-card {
    background: white;
    padding: var(--cvg-space-xl);
    border-radius: var(--cvg-radius-lg);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    text-align: center;
    border-left: 4px solid var(--cvg-primary);
}

.cvg-stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--cvg-primary);
    margin-bottom: var(--cvg-space-xs);
}

.cvg-stat-label {
    font-size: 1rem;
    font-weight: 600;
    color: var(--cvg-gray-700);
    margin-bottom: var(--cvg-space-xs);
}

.cvg-stat-description {
    font-size: 0.875rem;
    color: var(--cvg-gray-500);
}

/* Buttons */
.cvg-button {
    display: inline-block;
    padding: var(--cvg-space-sm) var(--cvg-space-lg);
    border-radius: var(--cvg-radius-md);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.875rem;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.cvg-button-primary {
    background: var(--cvg-primary);
    color: white;
}

.cvg-button-primary:hover {
    background: var(--cvg-secondary);
    transform: translateY(-1px);
}

.cvg-button-secondary {
    background: var(--cvg-gray-100);
    color: var(--cvg-gray-700);
}

.cvg-button-secondary:hover {
    background: var(--cvg-gray-200);
}

.cvg-button-outline {
    background: transparent;
    color: var(--cvg-primary);
    border-color: var(--cvg-primary);
}

.cvg-button-outline:hover {
    background: var(--cvg-primary);
    color: white;
}

.cvg-button-success {
    background: var(--cvg-success);
    color: white;
}

.cvg-button-danger {
    background: var(--cvg-danger);
    color: white;
}

/* Repository List */
.cvg-repository-list {
    display: flex;
    flex-direction: column;
    gap: var(--cvg-space-md);
}

.cvg-repository-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--cvg-space-lg);
    background: var(--cvg-gray-50);
    border-radius: var(--cvg-radius-md);
    border-left: 4px solid var(--cvg-primary);
}

.cvg-repo-info h4 {
    margin-bottom: var(--cvg-space-xs);
}

.cvg-repo-info h4 a {
    color: var(--cvg-gray-800);
    text-decoration: none;
    font-weight: 600;
}

.cvg-repo-info h4 a:hover {
    color: var(--cvg-primary);
}

.cvg-repo-info p {
    color: var(--cvg-gray-500);
    margin-bottom: var(--cvg-space-sm);
}

.cvg-repo-meta {
    display: flex;
    gap: var(--cvg-space-md);
    font-size: 0.875rem;
    color: var(--cvg-gray-400);
}

.cvg-language-tag {
    background: var(--cvg-primary);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: var(--cvg-radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}

.cvg-repo-actions {
    display: flex;
    gap: var(--cvg-space-sm);
}

/* Footer */
.cvg-footer {
    background: var(--cvg-gray-800);
    color: white;
    padding: var(--cvg-space-xl) 0;
    margin-top: var(--cvg-space-2xl);
}

.cvg-footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--cvg-space-xl);
}

.cvg-footer-bottom {
    text-align: center;
    padding-top: var(--cvg-space-lg);
    border-top: 1px solid var(--cvg-gray-700);
    color: var(--cvg-gray-400);
}

/* Responsive Design */
@media (max-width: 768px) {
    .cvg-navbar-content {
        flex-direction: column;
        gap: var(--cvg-space-md);
        padding: var(--cvg-space-md);
    }
    
    .cvg-nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .cvg-grid-2,
    .cvg-grid-3,
    .cvg-grid-4 {
        grid-template-columns: 1fr;
    }
    
    .cvg-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cvg-repository-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--cvg-space-md);
    }
}

@media (max-width: 480px) {
    .cvg-stats-grid {
        grid-template-columns: 1fr;
    }
    
    .cvg-repo-meta {
        flex-wrap: wrap;
    }
}

/* Loading and Error States */
.cvg-loading {
    text-align: center;
    padding: var(--cvg-space-xl);
    color: var(--cvg-gray-500);
}

.cvg-error {
    background: #fef2f2;
    color: var(--cvg-danger);
    padding: var(--cvg-space-lg);
    border-radius: var(--cvg-radius-md);
    border-left: 4px solid var(--cvg-danger);
    margin: var(--cvg-space-lg) 0;
}

.cvg-success {
    background: #f0fdf4;
    color: var(--cvg-success);
    padding: var(--cvg-space-lg);
    border-radius: var(--cvg-radius-md);
    border-left: 4px solid var(--cvg-success);
    margin: var(--cvg-space-lg) 0;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.cvg-fade-in {
    animation: fadeIn 0.3s ease-out;
}

/* Focus and Accessibility */
.cvg-button:focus,
.cvg-nav-link:focus {
    outline: 2px solid var(--cvg-primary);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    .cvg-navbar,
    .cvg-footer {
        display: none;
    }
    
    .cvg-container {
        padding-top: 0;
    }
}