/* Base CSS for Reddit Analyzer - Dark Theme - Optimized Version */

:root {
    --background-primary: #0F0F23;
    --background-secondary: #1A1A2E;
    --accent-primary: #3B82F6;
    --accent-secondary: #10B981;
    --text-primary: #FFFFFF;
    --text-secondary: #9CA3AF;
    --border-color: #374151;
    --success-color: #10B981;
    --error-color: #EF4444;
    --warning-color: #F59E0B;
    --navigation-bg: #000815; /* An Logo angepasster Navigation-Hintergrund */
    
    /* Performance optimization */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.2s ease;
    --transition-slow: 0.3s ease;
    --border-radius-sm: 0.25rem;
    --border-radius: 0.5rem;
    --border-radius-lg: 0.75rem;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
}

/* CSS Reset with performance optimizations */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Performance optimization: will-change for animated elements */
.nav-link,
.btn,
.stat-tile,
.data-table tr {
    will-change: transform;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--background-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* Performance: reduce layout shifts */
    overflow-x: hidden;
}

.container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.main-content {
    flex: 1;
    padding: var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    /* Performance: contain layout changes */
    contain: layout style;
}

/* Navigation - Enhanced mit Logo-anpassendem Hintergrund */
.navigation {
    background-color: var(--navigation-bg); /* An Logo angepasster Hintergrund */
    border-bottom: 1px solid var(--border-color);
    padding: 0;
    height: 112px; /* Exakte Höhe von 112px */
    /* Performance: promote to own layer */
    transform: translateZ(0);
    backdrop-filter: blur(10px);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-xl);
    height: 112px; /* Exakte Höhe von 112px */
}

.nav-logo .logo {
    height: 100px; /* Angepasste Logo-Höhe */
    width: auto;
    transition: var(--transition-fast);
}

/* Logo hover effects removed for clean design */

.nav-menu {
    display: flex;
    gap: var(--spacing-xl);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-normal);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    position: relative;
}

.nav-link:hover {
    color: var(--text-primary);
    transform: translateY(-1px);
}

.nav-link.active {
    color: var(--accent-primary);
}

/* Enhanced navigation underline effect */
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-primary);
    transition: var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-user {
    display: flex;
    align-items: center;
    gap: var(--spacing);
}

.profile-image {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.profile-image:hover {
    border-color: var(--accent-primary);
    transform: scale(1.1);
}

/* Buttons - Enhanced */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-normal);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    position: relative;
    /* Performance: promote to own layer for animations */
    transform: translateZ(0);
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), #2563EB);
    color: white;
    box-shadow: 0 2px 4px rgba(59, 130, 246, 0.2);
}

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, #2563EB, #1D4ED8);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(59, 130, 246, 0.3);
}

.btn-secondary {
    background-color: var(--background-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--border-color);
    transform: translateY(-1px);
}

.btn-danger {
    background-color: var(--error-color);
    color: white;
    box-shadow: 0 2px 4px rgba(239, 68, 68, 0.2);
}

.btn-danger:hover:not(:disabled) {
    background-color: #DC2626;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(239, 68, 68, 0.3);
}

.btn-small {
    padding: var(--spacing-sm) var(--spacing);
    font-size: 0.875rem;
}

/* Loading button state */
.btn-loading {
    position: relative;
    color: transparent !important;
}

.btn-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: spin 1s linear infinite;
}

/* Tables - Enhanced */
.data-table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--background-secondary);
    border-radius: var(--border-radius);
    overflow: hidden;
    margin: var(--spacing) 0;
    /* Performance: contain table layout */
    contain: layout;
}

.data-table th {
    background-color: var(--border-color);
    color: var(--text-primary);
    font-weight: 600;
    text-transform: uppercase;
    padding: var(--spacing);
    text-align: left;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    position: relative;
}

.data-table th[data-sort] {
    cursor: pointer;
    user-select: none;
}

.data-table th[data-sort]:hover {
    background-color: #4B5563;
}

/* Sort indicators */
.data-table th.sort-asc::after {
    content: ' ↑';
    color: var(--accent-primary);
}

.data-table th.sort-desc::after {
    content: ' ↓';
    color: var(--accent-primary);
}

.data-table td {
    padding: var(--spacing);
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: var(--transition-normal);
}

.data-table tr:hover {
    background-color: #2D3748;
    transform: scale(1.01);
}

.data-table tr.selected {
    background-color: rgba(59, 130, 246, 0.1);
    border-left: 3px solid var(--accent-primary);
}

/* Tiles - Enhanced */
.stat-tile {
    background-color: var(--background-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition-slow);
    flex: 1;
    margin: var(--spacing-sm);
    border: 1px solid transparent;
    cursor: pointer;
    /* Performance */
    transform: translateZ(0);
}

.stat-tile:hover {
    transform: translateY(-4px) scale(1.02);
    border-color: var(--accent-primary);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.15);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin: var(--spacing-sm) 0;
    transition: var(--transition-normal);
}

.stat-tile:hover .stat-number {
    transform: scale(1.1);
}

/* Status badges - Enhanced */
.status-badge {
    padding: var(--spacing-xs) 0.75rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    display: inline-block;
    transition: var(--transition-normal);
}

.status-badge.active {
    background-color: var(--success-color);
    color: white;
    box-shadow: 0 2px 4px rgba(16, 185, 129, 0.2);
}

.status-badge.inactive {
    background-color: var(--text-secondary);
    color: var(--background-primary);
}

.status-badge:hover {
    transform: scale(1.05);
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing); }
.mt-4 { margin-top: var(--spacing-lg); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing); }
.mb-4 { margin-bottom: var(--spacing-lg); }

.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing); }
.p-4 { padding: var(--spacing-lg); }

.flex { display: flex; }
.flex-column { flex-direction: column; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.items-center { align-items: center; }

.hidden { display: none; }
.visible { visibility: visible; }
.invisible { visibility: hidden; }

/* Animation utilities */
.fade-in {
    animation: fadeIn var(--transition-slow) ease-in-out;
}

.slide-in-up {
    animation: slideInUp var(--transition-slow) ease-out;
}

/* Footer */
.footer {
    background-color: var(--background-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing) 0;
    text-align: center;
    color: var(--text-secondary);
    margin-top: auto;
}

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

/* Responsive Design - Enhanced */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: var(--spacing);
        padding: var(--spacing);
        height: 110px; /* Mindesthöhe für Mobile */
    }
    
    .nav-menu {
        flex-direction: column;
        gap: var(--spacing);
        width: 100%;
        text-align: center;
    }
    
    .main-content {
        padding: var(--spacing);
    }
    
    .data-table {
        font-size: 0.875rem;
    }
    
    .data-table th,
    .data-table td {
        padding: var(--spacing-sm);
    }
    
    .stat-tile {
        margin: var(--spacing-xs);
        min-width: auto;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .nav-logo .logo {
        height: 50px;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
    
    .data-table {
        font-size: 0.75rem;
    }
}