/**
 * FuZip - Styles arborescence de fichiers
 * Tree view, checkboxes, sélection exclusive, animations
 */

/* ===== Tree Panel ===== */
.tree-panel {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-height: 400px;
}

.tree-header {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    background-color: var(--color-bg-secondary);
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.search-input-wrapper {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
}

.search-input {
    flex: 1;
    width: 100%;
    padding: var(--spacing-sm) 2.5rem var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    background-color: var(--color-bg);
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

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

.search-clear-btn {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    padding: 0.25rem;
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.search-clear-btn:hover {
    background-color: rgba(0, 0, 0, 0.1);
}

/* Mode dark : hover plus visible */
:root[data-theme="dark"] .search-clear-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.search-clear-btn svg {
    width: 1rem;
    height: 1rem;
    stroke: var(--color-text-muted);
    fill: none;
    stroke-width: 2;
}

.search-clear-btn.hidden {
    display: none;
}

.tree-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.btn-tree-action {
    padding: var(--spacing-sm);
    background-color: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.btn-tree-action:hover {
    background-color: var(--color-bg-tertiary);
    border-color: var(--color-border-hover);
}

.btn-tree-action svg {
    width: 1.25rem;
    height: 1.25rem;
    color: var(--color-text-secondary);
}

/* ===== Tree Content ===== */
.tree-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-sm);
}

/* Scrollbar personnalisé */
.tree-content::-webkit-scrollbar {
    width: 8px;
}

.tree-content::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
}

.tree-content::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: var(--radius-md);
}

.tree-content::-webkit-scrollbar-thumb:hover {
    background: var(--color-border-hover);
}

/* ===== Tree Items ===== */
.tree-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background-color var(--transition-fast);
    position: relative;
    user-select: none;
}

.tree-item:hover {
    background-color: var(--color-bg-secondary);
}

.tree-item.selected {
    background-color: var(--color-primary-light);
}

/* Indentation pour niveaux */
.tree-item[data-level="1"] { padding-left: calc(var(--spacing-sm) + 0rem); }
.tree-item[data-level="2"] { padding-left: calc(var(--spacing-sm) + 1.5rem); }
.tree-item[data-level="3"] { padding-left: calc(var(--spacing-sm) + 3rem); }
.tree-item[data-level="4"] { padding-left: calc(var(--spacing-sm) + 4.5rem); }
.tree-item[data-level="5"] { padding-left: calc(var(--spacing-sm) + 6rem); }

/* Icône expand/collapse pour dossiers */
.tree-expand {
    width: 1rem;
    height: 1rem;
    flex-shrink: 0;
    transition: transform var(--transition-fast);
    cursor: pointer;
    fill: none;
    stroke: var(--color-text-muted);
    stroke-width: 2;
}

.tree-item.expanded .tree-expand {
    transform: rotate(90deg);
}

.tree-item.collapsed .tree-expand {
    transform: rotate(0deg);
}

/* Pas d'icône pour fichiers */
.tree-item.file .tree-expand {
    visibility: hidden;
}

/* Checkbox */
.tree-checkbox {
    width: 1.125rem;
    height: 1.125rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    flex-shrink: 0;
    transition: all var(--transition-fast);
    position: relative;
    background-color: var(--color-bg);
}

.tree-checkbox:hover {
    border-color: var(--color-primary);
}

/* Checkbox cochée */
input[type="checkbox"]:checked + .tree-checkbox,
.tree-checkbox.checked {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

/* Icône checkmark */
input[type="checkbox"]:checked + .tree-checkbox::after,
.tree-checkbox.checked::after {
    content: '';
    position: absolute;
    left: 0.25rem;
    top: 0.125rem;
    width: 0.375rem;
    height: 0.625rem;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* État indeterminate pour dossiers partiellement sélectionnés */
.tree-checkbox.indeterminate {
    background-color: var(--color-primary-light);
    border-color: var(--color-primary);
}

.tree-checkbox.indeterminate::after {
    content: '';
    position: absolute;
    left: 0.1875rem;
    top: 50%;
    width: 0.5rem;
    height: 2px;
    background-color: var(--color-primary);
    transform: translateY(-50%);
}

/* Masquer input natif */
.tree-item input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

/* Icône fichier/dossier */
.tree-icon {
    width: 1.25rem;
    height: 1.25rem;
    flex-shrink: 0;
    fill: none;
    stroke-width: 2;
}

.tree-icon.folder {
    stroke: #f59e0b;
}

.tree-icon.file {
    stroke: var(--color-text-muted);
}

/* Nom du fichier/dossier */
.tree-name {
    flex: 1;
    font-size: var(--font-size-sm);
    color: var(--color-text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Taille fichier */
.tree-size {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    flex-shrink: 0;
}

/* ===== États spéciaux ===== */

/* Fichier en conflit */
.tree-item.conflict {
    position: relative;
}

.tree-item.conflict::before {
    content: '⚠';
    position: absolute;
    left: 0.25rem;
    font-size: 0.875rem;
    color: var(--color-warning);
}

.tree-item.conflict .tree-name {
    font-weight: 500;
}

/* Animation déselection automatique (sélection exclusive) */
@keyframes deselect-pulse {
    0%, 100% {
        background-color: transparent;
        transform: scale(1);
    }
    25% {
        background-color: rgba(255, 193, 7, 0.4);
        transform: scale(1.02);
    }
    75% {
        background-color: rgba(255, 193, 7, 0.2);
        transform: scale(1.01);
    }
}

.tree-item.auto-deselected {
    animation: deselect-pulse 0.6s ease-in-out;
}

/* Highlight pour recherche */
.tree-item.search-match {
    background-color: #fef3c7;
}

.tree-item.search-match .tree-name {
    font-weight: 600;
}

/* Élément caché (filtré par recherche) */
.tree-item.filtered-out {
    display: none;
}

/* Dossier vide */
.tree-item.empty {
    opacity: 0.6;
    font-style: italic;
}

/* Actions sur l'item (preview, extract) */
.tree-actions {
    display: none;
    gap: var(--spacing-xs);
    margin-left: auto;
}

.tree-item:hover .tree-actions {
    display: flex;
}

.btn-item-action {
    padding: var(--spacing-xs);
    background-color: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.btn-item-action:hover {
    background-color: var(--color-bg-tertiary);
    border-color: var(--color-border);
}

.btn-item-action svg {
    width: 1rem;
    height: 1rem;
    stroke: var(--color-text-secondary);
    fill: none;
    stroke-width: 2;
}

/* ===== Empty State ===== */
.tree-empty {
    padding: var(--spacing-2xl);
    text-align: center;
    color: var(--color-text-muted);
}

.tree-empty-icon {
    width: 3rem;
    height: 3rem;
    margin: 0 auto var(--spacing-md);
    color: var(--color-text-muted);
}

.tree-empty-text {
    font-size: var(--font-size-base);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .tree-panel {
        min-height: 300px;
    }

    .tree-header {
        flex-direction: column;
        align-items: stretch;
    }

    .tree-actions {
        justify-content: flex-end;
    }

    /* Réduire l'indentation sur mobile */
    .tree-item[data-level="2"] { padding-left: calc(var(--spacing-sm) + 1rem); }
    .tree-item[data-level="3"] { padding-left: calc(var(--spacing-sm) + 2rem); }
    .tree-item[data-level="4"] { padding-left: calc(--spacing-sm) + 3rem); }
    .tree-item[data-level="5"] { padding-left: calc(var(--spacing-sm) + 4rem); }
}