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

:root {
    /* Colors - Modern Dark Theme */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #2d3748;
    --bg-hover: #2d3748;
    --bg-active: #4a5568;
    
    --text-primary: #f8fafc;
    --text-secondary: #e2e8f0;
    --text-muted: #94a3b8;
    
    --accent-primary: #3b82f6;
    --accent-hover: #2563eb;
    --accent-active: #1d4ed8;
    
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;
    
    --border-primary: #2d3748;
    --border-secondary: #4a5568;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    --gradient-secondary: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', 'Monaco', 'Cascadia Code', monospace;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Transitions */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
}

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* App Layout */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    background: rgba(15, 23, 42, 0.8);
    border-bottom: 1px solid var(--border-primary);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--space-md) var(--space-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
    justify-content: space-between;
    gap: var(--space-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.logo svg {
    color: var(--accent-primary);
    flex-shrink: 0;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.125rem;
    background: var(--gradient-primary);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.stats {
    display: flex;
    align-items: baseline;
    gap: var(--space-xs);
    background: var(--bg-tertiary);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-secondary);
}

.file-count {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.file-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Main Content */
.main-content {
    flex: 1;
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--space-xl);
    width: 100%;
}

/* Search Container */
.search-container {
    margin-bottom: var(--space-xl);
}

.search-box {
    position: relative;
    max-width: 500px;
    margin: 0 auto;
}

.search-box input {
    width: 100%;
    padding: var(--space-md) var(--space-md) var(--space-md) 3rem;
    background: var(--bg-secondary);
    border: 2px solid var(--border-primary);
    border-radius: var(--radius-xl);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all var(--transition-normal);
    outline: none;
}

.search-box input:focus {
    border-color: var(--accent-primary);
    background: var(--bg-tertiary);
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.1);
}

.search-box input::placeholder {
    color: var(--text-muted);
}

.search-icon {
    position: absolute;
    left: var(--space-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
    transition: color var(--transition-normal);
}

.search-box:focus-within .search-icon {
    color: var(--accent-primary);
}

.search-hint {
    position: absolute;
    right: var(--space-md);
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--text-muted);
    font-size: 0.875rem;
    pointer-events: none;
}

.search-hint kbd {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    border: 1px solid var(--border-secondary);
}

/* File Explorer */
.file-explorer {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-primary);
    transition: all var(--transition-normal);
}

.file-explorer:hover {
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
}

.explorer-content {
    padding: var(--space-md);
}

/* Folder Styles */
.folder-item {
    margin-bottom: 0.25rem;
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    cursor: pointer;
    outline: none;
    position: relative;
    background: transparent;
    border: 1px solid transparent;
}

.folder-item:hover,
.folder-item:focus-visible {
    background: var(--bg-tertiary);
    transform: translateY(-1px);
    border-color: var(--border-primary);
    box-shadow: var(--shadow-sm);
}

.folder-item:focus-visible {
    box-shadow: 0 0 0 2px var(--accent-primary);
    outline: none;
}

.folder-item[aria-expanded="true"] {
    background: var(--bg-tertiary);
    border-color: var(--border-primary);
}

.folder-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: 0.75rem 1rem;
    user-select: none;
    position: relative;
}

.folder-icon {
    position: relative;
    color: var(--accent-primary);
    transition: all var(--transition-normal);
    width: 1.5rem;
    height: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.folder-item[aria-expanded="true"] .folder-icon {
    transform: rotate(90deg);
    color: var(--accent-primary);
}

.folder-icon .folder-open {
    display: none;
}

.folder-item[aria-expanded="true"] .folder-icon .folder-open {
    display: block;
}

.folder-name {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-primary);
    flex: 1;
    line-height: 1.4;
    transition: color var(--transition-fast);
}

.folder-item:hover .folder-name,
.folder-item:focus-visible .folder-name {
    color: var(--accent-primary);
}

.folder-actions, .file-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-shrink: 0; /* Empêche les actions de rétrécir */
    margin-left: var(--space-md);
}

.folder-count {
    background: var(--bg-primary);
    color: var(--text-secondary);
    padding: 0.25rem 0.6rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    font-feature-settings: 'tnum' on, 'lnum' on;
    min-width: 1.75rem;
    text-align: center;
    border: 1px solid var(--border-primary);
    transition: all var(--transition-fast);
}

.folder-item:hover .folder-count {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
}

/* Folder Content */
.folder-content {
    overflow: hidden;
    transition: all var(--transition-normal);
    padding-left: 2.5rem;
    margin-left: 1.25rem;
    position: relative;
}

.folder-content::before {
    content: '';
    position: absolute;
    left: 0.5rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-primary);
    opacity: 0.5;
}

.folder-content.collapsed {
    max-height: 0;
    opacity: 0;
    padding-top: 0;
    padding-bottom: 0;
    margin-bottom: 0;
}

.folder-content:not(.collapsed) {
    max-height: 9999px;
    opacity: 1;
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
    margin-bottom: 0.5rem;
}

/* ==========================================
   RESPONSIVE DESIGN - MEDIA QUERIES
   ========================================== */

@media (max-width: 768px) {
    body {
        font-size: 16px; /* Augmente la taille de base pour la lisibilité */
    }

    .container {
        padding: var(--space-md) var(--space-sm); /* Réduit le padding horizontal */
    }

    .header-title {
        font-size: 1.5rem; /* Réduit la taille du titre principal */
    }

    #search-input {
        padding: var(--space-sm) var(--space-md);
    }

    .folder-header, .file-link {
        flex-wrap: wrap; /* Permet aux éléments de passer à la ligne */
        padding: var(--space-md) var(--space-sm);
        row-gap: var(--space-sm); /* Ajoute de l'espace vertical quand les éléments s'enveloppent */
    }

    .folder-info, .file-info {
        margin-left: var(--space-sm);
        flex-basis: calc(100% - 40px); /* Prend toute la largeur moins l'icône */
        order: 1; /* Apparaît en premier dans l'ordre visuel */
    }

    .folder-actions, .file-actions {
        margin-left: auto; /* Pousse vers la droite */
        flex-basis: 100%; /* Prend toute la largeur */
        justify-content: flex-end; /* Aligne les actions à droite */
        order: 2; /* Apparaît après le nom */
        padding-top: var(--space-xs);
    }

    .file-meta {
        width: 100%;
        justify-content: space-between;
    }

    .copy-folder-links, .copy-file-link {
        padding: var(--space-sm); /* Augmente la zone de clic */
    }

    .keyboard-shortcuts-list {
        grid-template-columns: 1fr; /* Une seule colonne pour les raccourcis */
    }
}

.root-content {
    padding-left: 0;
    margin-left: 0;
    border-left: none;
    padding-top: 0;
    padding-bottom: 0;
}

/* File Styles */
.file-item {
    margin-bottom: var(--space-xs);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    outline: none;
    position: relative;
}

.file-item:hover,
.file-item:focus {
    transform: translateX(2px);
}

.file-item:focus {
    box-shadow: 0 0 0 2px var(--accent-primary);
}

.file-link:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.file-icon {
    color: var(--accent-secondary);
    flex-shrink: 0;
    transition: color var(--transition-fast);
}

.file-link:hover .file-icon {
    color: var(--accent-primary);
}

.file-item .file-meta {
    display: flex;
    gap: var(--space-md);
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px; /* Ajustement de la marge */
}

.folder-meta {
    display: flex;
    align-items: center;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-right: var(--space-md);
}

.file-size,
.file-date {
    font-family: var(--font-mono);
    background: var(--bg-hover);
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-secondary);
}

/* No Results */
.no-results {
    text-align: center;
    padding: var(--space-2xl);
    color: var(--text-muted);
}

.no-results.hidden {
    display: none;
}

.no-results-icon {
    color: var(--text-muted);
    margin-bottom: var(--space-lg);
}

.no-results h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--text-secondary);
}

.no-results p {
    font-size: 0.95rem;
    color: var(--text-muted);
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-primary);
    margin-top: auto;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--space-lg) var(--space-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
}

.footer-left p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.keyboard-hints {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.keyboard-hints span {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.keyboard-hints kbd {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    border: 1px solid var(--border-secondary);
    min-width: 1.5rem;
    text-align: center;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content,
    .footer-content {
        padding: var(--space-md);
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-md);
    }
    
    .main-content {
        padding: var(--space-md);
    }
    
    .logo h1 {
        font-size: 1.25rem;
    }
    
    .keyboard-hints {
        flex-wrap: wrap;
        gap: var(--space-md);
    }
    
    .folder-content,
    .root-content {
        padding-left: var(--space-md);
        margin-left: var(--space-md);
    }
}

@media (max-width: 480px) {
    .search-box {
        max-width: 100%;
    }
    
    .file-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-xs);
    }
    
    .keyboard-hints {
        display: none;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --bg-primary: #000000;
        --bg-secondary: #1a1a1a;
        --text-primary: #ffffff;
        --border-primary: #666666;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
        animation: none !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* Focus styles for better accessibility */
*:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* Utilities */
.hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-hover);
    border-radius: var(--radius-md);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--bg-active);
}

/* Boutons d'action */
.action-button {
    background: var(--accent-primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.action-button::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 5px;
    height: 5px;
    background: rgba(255, 255, 255, 0.5);
    opacity: 0;
    border-radius: 100%;
    transform: scale(1, 1) translate(-50%, -50%);
    transform-origin: 50% 50%;
}

.action-button:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.action-button:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.action-button:active::after {
    animation: ripple 0.6s ease-out;
}

/* Boutons de copie */
.copy-file-link,
.copy-folder-links {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-secondary);
    border-radius: var(--radius-sm);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    color: var(--text-muted);
}

.copy-file-link:hover,
.copy-folder-links:hover {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
    transform: translateY(-1px);
}

.copy-file-link:active,
.copy-folder-links:active {
    transform: translateY(0);
}

/* Tooltip pour les boutons de copie */
.copy-tooltip {
    position: absolute;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
    pointer-events: none;
    white-space: nowrap;
    z-index: 1000;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity var(--transition-fast), transform var(--transition-fast);
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    margin-bottom: 8px;
}

.copy-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: rgba(0, 0, 0, 0.8) transparent transparent transparent;
}

.copy-file-link:hover .copy-tooltip,
.copy-folder-links:hover .copy-tooltip {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* Animation de confirmation de copie */
@keyframes copy-confirm {
    0% { opacity: 0; transform: scale(0.8); }
    20% { opacity: 1; transform: scale(1.2); }
    100% { opacity: 0; transform: scale(1); }
}

.copy-confirm {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--success);
    font-size: 1.2rem;
    opacity: 0;
    pointer-events: none;
    animation: copy-confirm 1s ease-out;
}

/* Animation de vague au clic */
@keyframes ripple {
    0% {
        transform: scale(0, 0);
        opacity: 0.5;
    }
    100% {
        transform: scale(20, 20);
        opacity: 0;
    }
}

/* Amélioration des états de focus */
button:focus-visible,
a:focus-visible,
[tabindex="0"]:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
    border-radius: var(--radius-sm);
}

/* Transition pour les interactions */
a, button, .file-item, .folder-item {
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

/* Amélioration du feedback au survol */
.file-item:hover,
.folder-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Style pour les boutons dans la barre d'outils */
.toolbar-button {
    background: none;
    border: none;
    color: var(--text-muted);
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all var(--transition-fast);
}

.toolbar-button:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.toolbar-button.active {
    color: var(--accent-primary);
    background: rgba(59, 130, 246, 0.1);
}