/**
 * Joyn Resources - File Upload & Drag and Drop
 */

/* ========================================
   Drag and Drop Zone
   ======================================== */
.joyn-drop-zone {
    min-height: 90px;
    border: 2px dashed var(--joyn-gray-300);
    border-radius: var(--joyn-radius-md);
    padding: var(--joyn-spacing-4);
    background-color: var(--joyn-gray-50);
    transition: var(--joyn-transition);
    position: relative;
    box-shadow: var(--joyn-shadow-sm);
    background: linear-gradient(135deg, #f9fafb 0%, #f3f4f6 100%);
    cursor: pointer;
}

.joyn-drop-zone.drag-over {
    border-color: var(--joyn-primary);
    background: linear-gradient(135deg, var(--joyn-primary-light) 0%, #dbeafe 100%);
    border-style: solid;
    border-width: 3px;
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
    transform: scale(1.02);
}

.joyn-drop-zone-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--joyn-spacing-4);
    color: var(--joyn-gray-500);
}

.joyn-drop-zone-icon-wrapper {
    margin-bottom: var(--joyn-spacing-2);
    padding: var(--joyn-spacing-2);
    background: white;
    border-radius: var(--joyn-radius-full);
    box-shadow: var(--joyn-shadow);
    transition: var(--joyn-transition);
}

.joyn-drop-zone.drag-over .joyn-drop-zone-icon-wrapper {
    background: var(--joyn-primary-light);
    box-shadow: 0 0 0 8px rgba(37, 99, 235, 0.1);
    transform: scale(1.05);
}

.joyn-drop-zone-placeholder i,
.joyn-drop-zone-icon {
    font-size: 1.75rem;
    color: var(--joyn-gray-400);
    transition: var(--joyn-transition);
    display: block;
}

.joyn-drop-zone.drag-over .joyn-drop-zone-placeholder i,
.joyn-drop-zone.drag-over .joyn-drop-zone-icon {
    color: var(--joyn-primary);
    transform: scale(1.1);
}

.joyn-drop-zone-text {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--joyn-gray-700);
    margin: 0 0 var(--joyn-spacing-2) 0;
    line-height: 1.4;
}

.joyn-drop-zone-text strong {
    color: var(--joyn-gray-800);
}

.joyn-drop-zone.drag-over .joyn-drop-zone-text,
.joyn-drop-zone.drag-over .joyn-drop-zone-text strong {
    color: var(--joyn-primary);
}

.joyn-drop-zone-hint {
    font-size: 0.8125rem;
    color: var(--joyn-gray-500);
    margin: 0 0 var(--joyn-spacing-1) 0;
    line-height: 1.4;
}

.joyn-drop-zone.drag-over .joyn-drop-zone-hint {
    color: var(--joyn-gray-600);
}

.joyn-drop-zone-hint-small {
    font-size: 0.6875rem;
    color: var(--joyn-gray-400);
    margin: var(--joyn-spacing-1) 0 0 0;
    line-height: 1.3;
}

.joyn-drop-zone.drag-over .joyn-drop-zone-hint-small {
    color: var(--joyn-gray-500);
}

.joyn-files-list {
    min-height: 75px;
    position: relative;
}

/* 파일 아이템이 있을 때만 플레이스홀더 숨기기 */
.joyn-files-list:has(.joyn-file-item) .joyn-drop-zone-placeholder {
    display: none !important;
}

/* :has()를 지원하지 않는 브라우저를 위한 fallback */
.joyn-files-list .joyn-file-item ~ .joyn-drop-zone-placeholder {
    display: none !important;
}

.joyn-file-item {
    display: flex;
    align-items: center;
    gap: var(--joyn-spacing-3);
    padding: var(--joyn-spacing-3) var(--joyn-spacing-4);
    background-color: white;
    border: 1px solid var(--joyn-gray-200);
    border-radius: var(--joyn-radius-md);
    margin-bottom: var(--joyn-spacing-2);
    transition: var(--joyn-transition);
}

.joyn-file-item:hover {
    border-color: var(--joyn-primary);
    box-shadow: var(--joyn-shadow-sm);
}

.joyn-file-item .file-icon {
    font-size: 1.5rem;
    color: var(--joyn-gray-400);
}

.joyn-file-item .file-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--joyn-spacing-1);
}

.joyn-file-item .file-name {
    font-weight: 500;
    color: var(--joyn-gray-900);
}

.joyn-file-item .file-size {
    font-size: 0.875rem;
    color: var(--joyn-gray-500);
}

.joyn-file-item .file-progress {
    width: 100%;
    height: 4px;
    background-color: var(--joyn-gray-200);
    border-radius: var(--joyn-radius-full);
    overflow: hidden;
    margin-top: var(--joyn-spacing-2);
}

.joyn-file-item .file-progress-bar {
    height: 100%;
    background-color: var(--joyn-primary);
    transition: width 0.3s ease;
}

.joyn-remove-file {
    background: none;
    border: none;
    color: var(--joyn-gray-400);
    cursor: pointer;
    padding: var(--joyn-spacing-2);
    border-radius: var(--joyn-radius-sm);
    transition: var(--joyn-transition);
    font-size: 1.25rem;
    line-height: 1;
}

.joyn-remove-file:hover {
    color: var(--joyn-error);
    background-color: var(--joyn-gray-100);
}