/**
 * FuZip - Styles colonnes et upload
 * Colonnes unifiées (upload + tree), drop zones, progress bars
 */

/* ===== Colonnes Section ===== */
.columns-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    flex: 1;
    min-height: 0;
}

/* ===== Colonne ===== */
.column {
    display: flex;
    flex-direction: column;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    min-height: 0;
    overflow: hidden;
    transition: all var(--transition-base);
}

.column.drag-over {
    border-color: var(--color-primary);
    background-color: var(--color-primary-light);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

/* ===== Header de colonne ===== */
.column-header {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    background-color: var(--color-bg-secondary);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    flex-shrink: 0;
}

.column-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text);
    margin: 0;
    flex-shrink: 0;
}

/* Info de colonne (fichier chargé) */
.column-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.info-file-name {
    font-weight: 600;
    color: var(--color-text);
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.info-separator {
    color: var(--color-text-muted);
}

.info-stat {
    font-weight: 500;
    color: var(--color-text);
}

/* ===== Body de colonne ===== */
.column-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    position: relative;
    min-height: 0;
    overflow: hidden;
}

/* ===== Drop Zone ===== */
.drop-zone {
    flex: 1;
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-2xl) var(--spacing-lg);
    margin: var(--spacing-lg);
    text-align: center;
    background-color: var(--color-bg-secondary);
    transition: all var(--transition-base);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    min-height: 250px;
}

.drop-zone:hover {
    border-color: var(--color-primary);
    background-color: var(--color-primary-light);
}

.drop-zone.drag-over {
    border-color: var(--color-primary);
    background-color: var(--color-primary-light);
    border-style: solid;
    transform: scale(1.02);
}

.drop-icon {
    width: 3rem;
    height: 3rem;
    color: var(--color-text-secondary);
    transition: color var(--transition-base);
}

.drop-zone:hover .drop-icon,
.drop-zone.drag-over .drop-icon {
    color: var(--color-primary);
}

.drop-text {
    font-size: var(--font-size-lg);
    font-weight: 500;
    color: var(--color-text);
}

.drop-or {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    text-transform: lowercase;
}

.btn-browse {
    padding: var(--spacing-sm) var(--spacing-xl);
    background-color: white;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-browse:hover {
    background-color: var(--color-primary);
    color: white;
}

.file-input {
    display: none;
}

/* ===== Progress Bar ===== */
.upload-progress {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    margin: 0 var(--spacing-lg) var(--spacing-lg);
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
}

.progress-bar {
    flex: 1;
    height: 0.5rem;
    background-color: var(--color-bg-tertiary);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
    border-radius: var(--radius-xl);
    transition: width var(--transition-base);
    position: relative;
    overflow: hidden;
}

/* Animation de progression */
.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.progress-text {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    min-width: 3rem;
    text-align: right;
}

/* ===== Bouton changer ===== */
.btn-change-file {
    padding: var(--spacing-xs);
    background-color: transparent;
    color: var(--color-text-secondary);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 2rem;
    height: 2rem;
    margin-left: auto;
}

.btn-change-file:hover {
    background-color: var(--color-bg-secondary);
    color: var(--color-primary);
}

.btn-change-file svg {
    width: 1.125rem;
    height: 1.125rem;
}

/* ===== État compact (fichier chargé) ===== */
.column-header.compact .column-title {
    display: none;
}

.column-header.compact .column-info {
    display: flex;
}

/* Quand pas compact, cache les infos */
.column-header:not(.compact) .column-info {
    display: none;
}

/* Cache la drop zone quand compact */
.column-header.compact ~ .column-body .drop-zone {
    display: none;
}

/* Affiche le tree-panel quand compact */
.column-header.compact ~ .column-body .tree-panel {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
}

/* ===== États spéciaux ===== */
.column-header.uploading {
    pointer-events: none;
    opacity: 0.7;
}

.column-header.error {
    border-color: var(--color-error);
}

.column.error {
    background-color: rgba(239, 68, 68, 0.02);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .columns-section {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .drop-zone {
        padding: var(--spacing-xl) var(--spacing-md);
        min-height: 200px;
    }

    .drop-icon {
        width: 2.5rem;
        height: 2.5rem;
    }

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

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

    .column-info {
        width: 100%;
        flex-wrap: wrap;
    }

    .info-file-name {
        max-width: 100%;
    }

}