/* ================================================================
 * DATEI: css/components/modals.css
 * ZWECK: Login-Modal, Config-Modal, Group-Modal, Upload-Modal,
 *        Move-Modal, Detail-Modal, Form-Modal, Version History,
 *        Folder Tree, Multi-Select, Responsive-Anpassungen
 * DESIGN: "Refined Brass Studio" – warm charcoal, brass/gold accents
 * REFERENZIERT: css/variables.css (CSS Custom Properties)
 * REFERENZIERT VON: index.html, login.html
 * ================================================================ */

/* ========== LOGIN PAGE ========== */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: var(--space-5);
    background: var(--bg-app);
}

.login-box {
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    width: 100%;
    max-width: 400px;
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-xl);
    position: relative;
}

.login-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 2px;
    background: var(--brass);
    border-radius: 0 0 var(--radius-xs) var(--radius-xs);
}

.login-logo {
    text-align: center;
    margin-bottom: var(--space-8);
}

.login-logo h1 {
    font-size: var(--font-2xl);
    font-weight: 700;
    color: var(--accent-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    letter-spacing: -0.01em;
}

.login-logo p {
    color: var(--text-muted);
    margin-top: var(--space-2);
    font-size: var(--font-sm);
    letter-spacing: 0.02em;
}

/* ========== CONFIG MODAL (Login Page) ========== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 450px;
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-xl);
    transform: scale(0.96) translateY(8px);
    transition: transform var(--transition-slow);
}

.modal-overlay.active .modal {
    transform: scale(1) translateY(0);
}

.modal-header {
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-size: var(--font-lg);
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.25rem;
    cursor: pointer;
    line-height: 1;
    padding: var(--space-1);
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast), background var(--transition-fast);
}

.modal-close:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.modal-body {
    padding: var(--space-5);
}

.modal-footer {
    padding: var(--space-3) var(--space-5);
    border-top: 1px solid var(--border-subtle);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-3);
    background: var(--bg-elevated);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* ========== GROUP MODAL ========== */
.group-modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 1999;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.group-modal-backdrop.active {
    opacity: 1;
    visibility: visible;
}

#group-modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -48%) scale(0.96);
    width: 380px;
    max-width: 90%;
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
    z-index: 2000;
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-slow), visibility var(--transition-slow), transform var(--transition-slow);
}

#group-modal.active {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

#group-modal .group-modal-header {
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#group-modal .group-modal-title {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-lg);
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

#group-modal .group-modal-title i {
    color: var(--accent-primary);
}

#group-modal .group-modal-header .btn-icon {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}

#group-modal .group-modal-header .btn-icon:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

#group-modal .group-modal-body {
    padding: var(--space-5);
}

#group-modal .group-modal-body .form-group {
    margin-bottom: var(--space-4);
}

#group-modal .group-modal-body .form-group:last-of-type {
    margin-bottom: 0;
}

#group-modal .group-modal-body .form-group label {
    font-size: var(--font-xs);
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-1);
    display: block;
}

#group-modal .group-modal-body .form-control {
    background: var(--bg-input);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-base);
    color: var(--text-primary);
    width: 100%;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

#group-modal .group-modal-body .form-control:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-primary-transparent);
    outline: none;
}

#group-modal .group-meta {
    display: flex;
    gap: var(--space-4);
    margin-top: var(--space-4);
    padding-top: var(--space-4);
    border-top: 1px solid var(--border-subtle);
}

#group-modal .meta-item {
    font-size: var(--font-xs);
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

#group-modal .meta-item i {
    color: var(--text-muted);
    font-size: var(--font-xs);
}

#group-modal .group-modal-footer {
    padding: var(--space-3) var(--space-5);
    border-top: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-elevated);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

#group-modal .group-modal-footer .footer-right {
    display: flex;
    gap: var(--space-2);
}

#group-modal .btn-danger-ghost {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--danger-subtle);
    color: var(--accent-danger);
    cursor: pointer;
    transition: all var(--transition-fast);
}

#group-modal .btn-danger-ghost:hover {
    background: var(--danger-subtle);
    border-color: var(--accent-danger);
}

#group-modal .btn-ghost {
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-md);
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: var(--font-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

#group-modal .btn-ghost:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

#group-modal .btn-primary {
    padding: var(--space-2) var(--space-5);
    border-radius: var(--radius-md);
    background: var(--accent-primary);
    border: none;
    color: var(--text-on-accent);
    font-size: var(--font-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

#group-modal .btn-primary:hover {
    background: var(--accent-primary-hover);
}

/* Responsive adjustments for modals */
@media (max-width: 520px) {
    #group-modal {
        width: 95%;
        max-height: 95vh;
    }

    .action-buttons .btn {
        min-width: 100%;
    }
}

/* ========== UPLOAD MODAL ========== */
.upload-drop-zone {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-8) var(--space-5);
    border: 2px dashed var(--border-default);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: border-color var(--transition-normal), background var(--transition-normal);
    text-align: center;
    gap: var(--space-2);
    background: var(--bg-inset);
}

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

.upload-drop-zone.drag-over {
    border-color: var(--accent-primary);
    background: var(--accent-primary-transparent);
    box-shadow: inset 0 0 20px var(--accent-primary-transparent);
}

.upload-drop-zone i {
    font-size: 2rem;
    color: var(--text-muted);
    transition: color var(--transition-normal);
}

.upload-drop-zone:hover i {
    color: var(--accent-primary);
}

.upload-drop-zone p {
    margin: 0;
    font-size: var(--font-base);
    color: var(--text-primary);
}

.upload-drop-zone small {
    color: var(--text-muted);
    font-size: var(--font-xs);
}

.modal-content {
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

.modal-content .modal-header {
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-content .modal-header h3 {
    margin: 0;
    font-size: var(--font-lg);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--text-primary);
}

.modal-content .modal-body {
    padding: var(--space-5);
}

.media-grid-container.upload-drag-over {
    outline: 2px dashed var(--accent-primary);
    outline-offset: -4px;
    background: var(--accent-primary-transparent);
}

/* ========== MOVE MEDIA MODAL ========== */
.move-modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 1999;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.move-modal-backdrop.active {
    opacity: 1;
    visibility: visible;
}

#move-modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -48%) scale(0.96);
    width: 440px;
    max-width: 90%;
    max-height: 80vh;
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
    z-index: 2000;
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-slow), visibility var(--transition-slow), transform var(--transition-slow);
    display: flex;
    flex-direction: column;
}

#move-modal.active {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

#move-modal .move-modal-header {
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

#move-modal .move-modal-title {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-lg);
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

#move-modal .move-modal-title i {
    color: var(--accent-primary);
}

#move-modal .move-modal-body {
    padding: var(--space-4) var(--space-5);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
}

.move-modal-info {
    font-size: var(--font-sm);
    color: var(--text-secondary);
    margin-bottom: var(--space-3);
    padding: var(--space-2) var(--space-3);
    background: var(--bg-inset);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
    flex-shrink: 0;
}

.move-modal-info i {
    color: var(--accent-primary);
    margin-right: var(--space-1);
}

.move-modal-tree-wrapper {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    background: var(--bg-inset);
}

.move-modal-tree {
    padding: var(--space-2) 0;
}

.move-folder-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    cursor: pointer;
    color: var(--text-secondary);
    font-size: var(--font-sm);
    transition: all var(--transition-fast);
    user-select: none;
}

.move-folder-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.move-folder-item.selected {
    background: var(--accent-primary-transparent);
    color: var(--accent-primary);
}

.move-folder-item.selected .move-folder-icon {
    color: var(--accent-primary);
}

.move-folder-toggle {
    width: 16px;
    text-align: center;
    font-size: var(--font-xs);
    color: var(--text-muted);
    transition: transform var(--transition-fast);
    flex-shrink: 0;
}

.move-folder-item.expanded > .move-folder-toggle {
    transform: rotate(90deg);
}

.move-folder-icon {
    color: var(--text-muted);
    font-size: var(--font-sm);
    flex-shrink: 0;
}

.move-folder-name {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.move-folder-count {
    font-size: var(--font-xs);
    color: var(--text-muted);
    background: var(--bg-elevated);
    padding: 1px 6px;
    border-radius: var(--radius-full);
    flex-shrink: 0;
    border: 1px solid var(--border-subtle);
}

.move-folder-children {
    display: none;
}

.move-folder-children.expanded {
    display: block;
}

.move-modal-new-folder {
    margin-top: var(--space-3);
    flex-shrink: 0;
}

.move-modal-new-folder-input {
    display: flex;
    gap: var(--space-2);
    align-items: center;
    margin-top: var(--space-2);
}

.move-modal-new-folder-input .form-control {
    flex: 1;
    padding: var(--space-1) var(--space-2);
    font-size: var(--font-sm);
    background: var(--bg-input);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.move-modal-new-folder-input .form-control:focus {
    border-color: var(--accent-primary);
    outline: none;
    box-shadow: 0 0 0 3px var(--accent-primary-transparent);
}

#move-modal .move-modal-footer {
    padding: var(--space-3) var(--space-5);
    border-top: 1px solid var(--border-subtle);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-2);
    background: var(--bg-elevated);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    flex-shrink: 0;
}

/* ========== MEDIA MULTI-SELECT MODE ========== */
.media-card.select-mode .media-card-checkbox {
    opacity: 1;
}

.media-card.select-mode.selected {
    outline: 2px solid var(--accent-primary);
    outline-offset: -2px;
    box-shadow: 0 0 0 4px var(--accent-primary-transparent);
}

.media-selection-actions {
    display: flex;
    gap: var(--space-2);
    align-items: center;
    margin-left: auto;
}

#btn-select-mode.active {
    background: var(--accent-primary-transparent);
    color: var(--accent-primary);
}

@media (max-width: 520px) {
    #move-modal {
        width: 95%;
        max-height: 90vh;
    }
}

/* ========== DETAIL MODAL ========== */
.detail-modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 1999;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.detail-modal-backdrop.active {
    opacity: 1;
    visibility: visible;
}

.detail-modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -48%) scale(0.96);
    width: var(--modal-width);
    max-width: 95vw;
    height: auto;
    max-height: 90vh;
    min-height: 400px;
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-xl);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-slow), visibility var(--transition-slow), transform var(--transition-slow);
    overflow: hidden;
}

.detail-modal.active {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

.detail-modal-header {
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    background: var(--bg-surface);
    flex-shrink: 0;
}

.detail-modal-header .modal-title-group {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.detail-modal-header .modal-title-row {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.detail-modal-header .modal-title-row h2 {
    font-size: var(--font-xl);
    font-weight: 600;
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.detail-modal-header .modal-subtitle {
    font-size: var(--font-xs);
    color: var(--text-muted);
}

.detail-modal-header .btn-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.detail-modal-header .btn-icon:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.detail-modal-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-subtle);
    background: var(--bg-surface);
    padding: 0 var(--space-2);
    overflow-x: auto;
    flex-shrink: 0;
    gap: 0;
}

.detail-modal-body {
    flex: 1;
    overflow-y: auto;
    padding: 0;
    min-height: 0;
}

.detail-modal-footer {
    padding: var(--space-3) var(--space-5);
    border-top: 1px solid var(--border-subtle);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-2);
    background: var(--bg-elevated);
    flex-shrink: 0;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* Responsive: Fullscreen on small screens */
@media (max-width: 768px) {
    .detail-modal {
        width: 100%;
        height: 100%;
        max-width: 100%;
        max-height: 100%;
        min-height: unset;
        border-radius: 0;
        top: 0;
        left: 0;
        transform: translateY(20px);
    }

    .detail-modal.active {
        transform: translateY(0);
    }

    .detail-modal-footer {
        border-radius: 0;
    }
}

/* ========== FORM MODAL ========== */
#form-modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 2099;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

#form-modal-backdrop.active {
    opacity: 1;
    visibility: visible;
}

#form-modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -48%) scale(0.96);
    width: var(--modal-form-width);
    max-width: 90%;
    max-height: 80vh;
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-xl);
    z-index: 2100;
    display: flex;
    flex-direction: column;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-slow), visibility var(--transition-slow), transform var(--transition-slow);
    overflow: hidden;
}

#form-modal.active {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

#form-modal .form-modal-header {
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

#form-modal .form-modal-header h3 {
    margin: 0;
    font-size: var(--font-lg);
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

#form-modal .form-modal-body {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-5);
    min-height: 0;
}

#form-modal .form-modal-footer {
    padding: var(--space-3) var(--space-5);
    border-top: 1px solid var(--border-subtle);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-2);
    background: var(--bg-elevated);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    flex-shrink: 0;
}

/* ========== VERSION HISTORY INLINE ========== */
.version-history-card {
    display: flex;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--border-subtle);
    align-items: center;
    transition: background var(--transition-fast);
}

.version-history-card:last-child {
    border-bottom: none;
}

.version-history-card:hover {
    background: var(--bg-hover);
}

.version-history-thumb {
    width: 80px;
    height: 60px;
    flex-shrink: 0;
    background: var(--bg-inset);
    border-radius: var(--radius-md);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-subtle);
}

.version-history-thumb img {
    max-width: 100%;
    max-height: 100%;
    object-fit: cover;
}

.version-history-thumb i {
    color: var(--text-muted);
    font-size: 1.2rem;
}

.version-history-info {
    flex: 1;
    min-width: 0;
}

.version-history-title {
    font-weight: 500;
    font-size: var(--font-base);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.version-history-title .badge-current {
    display: inline-block;
    padding: 1px var(--space-2);
    border-radius: var(--radius-full);
    font-size: 0.65rem;
    font-weight: 600;
    background: var(--brass-subtle);
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.version-history-meta {
    font-size: var(--font-sm);
    color: var(--text-secondary);
    margin-top: 2px;
}

.version-history-sub {
    font-size: var(--font-xs);
    color: var(--text-muted);
    margin-top: 2px;
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.version-history-sub i {
    font-size: 0.6rem;
    opacity: 0.7;
}

.version-history-validity {
    font-size: var(--font-xs);
    color: var(--accent-primary);
    margin-top: 3px;
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.version-history-validity i {
    font-size: 0.6rem;
}

/* ========== ROOT FOLDER ITEM ========== */
.folder-tree-root-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    cursor: pointer;
    color: var(--text-secondary);
    font-size: var(--font-sm);
    transition: all var(--transition-fast);
    user-select: none;
    border-bottom: 1px solid var(--border-subtle);
    margin-bottom: var(--space-1);
}

.folder-tree-root-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.folder-tree-root-item.selected {
    background: var(--accent-primary-transparent);
    color: var(--accent-primary);
}

.folder-tree-root-item i {
    font-size: var(--font-sm);
}

.folder-tree-root-item .folder-count {
    font-size: var(--font-xs);
    color: var(--text-muted);
    background: var(--bg-elevated);
    padding: 1px 6px;
    border-radius: var(--radius-full);
    margin-left: auto;
    border: 1px solid var(--border-subtle);
}

/* ========== PLAYLIST EDIT DIALOG ========== */

.playlist-edit-header {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.playlist-edit-color-preview {
    width: 6px;
    height: 48px;
    border-radius: var(--radius-pill);
    flex-shrink: 0;
    margin-top: 20px;
}

.playlist-edit-options {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: var(--bg-inset);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-4);
    border: 1px solid var(--border-subtle);
}

.playlist-edit-option {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-family);
    font-size: var(--font-sm);
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.playlist-edit-option:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.playlist-edit-option i {
    font-size: 11px;
    width: 14px;
    text-align: center;
    color: var(--text-muted);
}

.playlist-edit-option input[type="checkbox"] {
    accent-color: var(--accent-primary);
}

.playlist-edit-priority,
.playlist-edit-color {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-left: auto;
}

.playlist-edit-priority label,
.playlist-edit-color label {
    font-family: var(--font-family);
    font-size: var(--font-xs);
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    white-space: nowrap;
}

.playlist-edit-priority select {
    padding: var(--space-1) var(--space-2);
    font-size: var(--font-sm);
    background: var(--bg-input);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-family);
}

.form-control-color {
    width: 32px;
    height: 28px;
    padding: 2px;
    cursor: pointer;
    border-radius: var(--radius-sm);
    background: var(--bg-input);
    border: 1px solid var(--border-subtle);
}

.form-control-color::-webkit-color-swatch {
    border-radius: var(--radius-xs);
    border: none;
}

/* Items section */
.playlist-edit-items-section {
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.playlist-edit-items-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-2) var(--space-3);
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border-subtle);
}

.playlist-edit-items-header label {
    font-family: var(--font-family);
    font-size: var(--font-sm);
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.playlist-edit-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    background: var(--accent-primary-transparent);
    color: var(--accent-primary);
    border-radius: var(--radius-pill);
    font-size: 10px;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

/* Items list */
.playlist-edit-items {
    max-height: 360px;
    overflow-y: auto;
    background: var(--bg-surface);
}

.playlist-edit-empty {
    padding: var(--space-8) var(--space-4);
    text-align: center;
    color: var(--text-muted);
}

.playlist-edit-empty i {
    font-size: 28px;
    margin-bottom: var(--space-3);
    display: block;
    opacity: 0.3;
}

.playlist-edit-empty p {
    font-family: var(--font-family);
    font-size: var(--font-sm);
    font-weight: 500;
}

/* Individual item */
.playlist-edit-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    border-bottom: 1px solid var(--border-subtle);
    transition: all var(--transition-fast);
    cursor: grab;
    user-select: none;
}

.playlist-edit-item:last-child {
    border-bottom: none;
}

.playlist-edit-item:hover {
    background: var(--bg-hover);
}

.playlist-edit-item.dragging {
    opacity: 0.3;
    background: var(--bg-active);
}

.playlist-edit-item.drag-over-above {
    box-shadow: inset 0 2px 0 0 var(--accent-primary);
}

.playlist-edit-item.drag-over-below {
    box-shadow: inset 0 -2px 0 0 var(--accent-primary);
}

/* Grip handle */
.playlist-edit-item-grip {
    color: var(--text-muted);
    font-size: 10px;
    opacity: 0;
    transition: opacity var(--transition-fast);
    cursor: grab;
    padding: var(--space-1);
}

.playlist-edit-item:hover .playlist-edit-item-grip {
    opacity: 0.6;
}

/* Number */
.playlist-edit-item-number {
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-inset);
    border-radius: var(--radius-sm);
    font-family: var(--font-family);
    font-size: 10px;
    font-weight: 700;
    color: var(--text-muted);
    flex-shrink: 0;
    font-variant-numeric: tabular-nums;
}

/* Thumbnail */
.playlist-edit-item-thumb {
    width: 44px;
    height: 28px;
    border-radius: var(--radius-sm);
    background: var(--bg-inset);
    overflow: hidden;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-subtle);
}

.playlist-edit-item-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.playlist-edit-item-thumb i {
    font-size: 11px;
    color: var(--text-muted);
    opacity: 0.5;
}

/* Info */
.playlist-edit-item-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.playlist-edit-item-name {
    font-family: var(--font-family);
    font-size: 12px;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.playlist-edit-item-meta {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-family);
    font-size: 10px;
    color: var(--text-muted);
}

.playlist-edit-item-type {
    text-transform: uppercase;
    letter-spacing: 0.03em;
    font-weight: 600;
}

.playlist-edit-item-duration {
    font-variant-numeric: tabular-nums;
}

/* Remove button */
.playlist-edit-item-remove {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: var(--space-1);
    border-radius: var(--radius-sm);
    opacity: 0;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.playlist-edit-item:hover .playlist-edit-item-remove {
    opacity: 1;
}

.playlist-edit-item-remove:hover {
    color: var(--accent-danger);
    background: var(--danger-subtle);
}