/* Flux3D - Panel Styles - Enhanced */

/* Sidebar Base - Modern glass effect */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    display: flex;
    flex-direction: column;
    transition: all var(--transition-normal);
    flex-shrink: 0;
    z-index: 50;
    position: relative;
}

.sidebar::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.02) 0%, transparent 100%);
    pointer-events: none;
}

.sidebar-left {
    border-right: 1px solid var(--border-color);
}

.sidebar-left::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 1px;
    background: linear-gradient(180deg, var(--accent-primary) 0%, transparent 30%, transparent 70%, var(--accent-secondary) 100%);
    opacity: 0.3;
}

.sidebar-right {
    border-left: 1px solid var(--border-color);
}

.sidebar-right::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 1px;
    background: linear-gradient(180deg, var(--accent-primary) 0%, transparent 30%, transparent 70%, var(--accent-secondary) 100%);
    opacity: 0.3;
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed);
}

.sidebar.collapsed .sidebar-content,
.sidebar.collapsed .sidebar-header h2,
.sidebar.collapsed .sidebar-header span {
    opacity: 0;
    pointer-events: none;
}

.sidebar-header {
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
    background: rgba(255, 255, 255, 0.01);
    position: relative;
    z-index: 1;
}

.sidebar-header h2 {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.sidebar-toggle {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition-normal);
}

.sidebar-toggle svg {
    width: 16px;
    height: 16px;
    fill: var(--text-muted);
    transition: all var(--transition-normal);
}

.sidebar-toggle:hover {
    background: var(--bg-hover);
    border-color: var(--accent-primary);
}

.sidebar-toggle:hover svg {
    fill: var(--accent-primary);
}

.sidebar.collapsed .sidebar-toggle svg {
    transform: rotate(180deg);
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 16px;
    padding-bottom: 28px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    position: relative;
    z-index: 1;
}

/* Panels - Enhanced with glass effect */
.panel {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    flex-shrink: 0;
    position: relative;
    transition: all var(--transition-normal);
}

.panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.06) 50%, transparent 100%);
    pointer-events: none;
}

.panel:hover {
    border-color: var(--border-light);
    box-shadow: var(--shadow-sm);
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    cursor: pointer;
    transition: all var(--transition-normal);
    user-select: none;
    position: relative;
}

.panel-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 16px;
    right: 16px;
    height: 1px;
    background: var(--border-color);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.panel.collapsible.expanded .panel-header::after {
    opacity: 1;
}

.panel-header:hover {
    background: var(--bg-hover);
}

.panel-header span {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 0.2px;
}

.panel-arrow {
    width: 18px;
    height: 18px;
    fill: var(--text-muted);
    transition: all var(--transition-normal);
}

.panel-header:hover .panel-arrow {
    fill: var(--accent-primary);
}

.panel-content {
    padding: 0 16px 16px;
}

.panel.collapsible .panel-content {
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal), padding var(--transition-normal);
}

.panel.collapsible.expanded .panel-content {
    max-height: 800px;
    padding-bottom: 16px;
    overflow: hidden;
}

.panel.collapsible.expanded .panel-arrow {
    transform: rotate(180deg);
    fill: var(--accent-primary);
}

/* Upload Zone - Enhanced with animations */
.upload-zone {
    border: 2px dashed var(--border-light);
    border-radius: var(--radius-lg);
    padding: 36px 20px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    background: var(--bg-primary);
    position: relative;
    overflow: hidden;
}

.upload-zone::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--accent-primary);
    border-style: solid;
    background: transparent;
}

.upload-zone:hover::before,
.upload-zone.dragover::before {
    opacity: 0.05;
}

.upload-zone.dragover {
    transform: scale(1.02);
    box-shadow: var(--accent-glow-intense);
}

.upload-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    position: relative;
    z-index: 1;
}

.upload-icon-large {
    width: 56px;
    height: 56px;
    fill: var(--text-muted);
    margin-bottom: 8px;
    transition: all var(--transition-normal);
}

.upload-zone:hover .upload-icon-large {
    fill: var(--accent-primary);
    transform: translateY(-4px);
    filter: drop-shadow(0 8px 16px rgba(99, 102, 241, 0.3));
}

.upload-content p {
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 600;
}

.upload-formats {
    font-size: 11px;
    color: var(--text-muted);
    background: var(--bg-tertiary);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
}

/* Sample Models Grid - Enhanced */
.sample-models-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.sample-model-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 14px 10px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.sample-model-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.sample-model-btn:hover {
    background: transparent;
    border-color: var(--accent-primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md), 0 0 20px rgba(99, 102, 241, 0.15);
}

.sample-model-btn:hover::before {
    opacity: 0.1;
}

.sample-model-btn .model-icon {
    font-size: 24px;
    color: var(--text-muted);
    position: relative;
    z-index: 1;
    transition: all var(--transition-normal);
}

.sample-model-btn:hover .model-icon {
    color: var(--accent-primary);
    transform: scale(1.15);
}

.sample-model-btn span:last-child {
    font-size: 11px;
    color: var(--text-secondary);
    font-weight: 500;
    position: relative;
    z-index: 1;
}

/* Models List - Enhanced */
.models-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.models-list .empty-message {
    text-align: center;
    color: var(--text-muted);
    font-size: 13px;
    padding: 24px;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    border: 1px dashed var(--border-color);
}

.model-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
}

.model-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0;
    background: var(--accent-gradient);
    border-radius: 0 2px 2px 0;
    transition: height var(--transition-normal);
}

.model-item:hover {
    background: var(--bg-hover);
    border-color: var(--border-light);
    transform: translateX(2px);
}

.model-item:hover::before {
    height: 60%;
}

.model-item.selected {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.08);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.1);
}

.model-item.selected::before {
    height: 80%;
}

.model-thumbnail {
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all var(--transition-normal);
}

.model-item:hover .model-thumbnail {
    background: rgba(99, 102, 241, 0.1);
}

.model-thumbnail svg {
    width: 20px;
    height: 20px;
    fill: var(--text-muted);
    transition: fill var(--transition-normal);
}

.model-item:hover .model-thumbnail svg {
    fill: var(--accent-primary);
}

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

.model-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 2px;
}

.model-meta {
    font-size: 11px;
    color: var(--text-muted);
}

.model-actions {
    display: flex;
    gap: 6px;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.model-item:hover .model-actions {
    opacity: 1;
}

.model-action-btn {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.model-action-btn svg {
    width: 14px;
    height: 14px;
    fill: var(--text-muted);
    transition: all var(--transition-normal);
}

.model-action-btn:hover {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    transform: scale(1.1);
}

.model-action-btn:hover svg {
    fill: white;
}

.model-action-btn.delete:hover {
    background: var(--error);
    border-color: var(--error);
}

.model-action-btn.lock.active {
    background: var(--warning);
    border-color: var(--warning);
}

.model-action-btn.lock.active svg {
    fill: white;
}

/* Model Item States */
.model-item.locked {
    border-color: var(--warning);
    background: rgba(245, 158, 11, 0.1);
}

.model-item.locked .model-thumbnail {
    background: rgba(245, 158, 11, 0.2);
}

.model-item.locked .model-thumbnail svg {
    fill: var(--warning);
}

.model-item.isolated {
    border-color: var(--success);
    background: rgba(16, 185, 129, 0.1);
}

.model-item.isolated::before {
    content: 'ISOLATED';
    position: absolute;
    top: 4px;
    right: 4px;
    font-size: 9px;
    font-weight: 600;
    color: var(--success);
    background: rgba(16, 185, 129, 0.2);
    padding: 2px 6px;
    border-radius: 4px;
    letter-spacing: 0.5px;
}

.model-item {
    position: relative;
}

/* Models Toolbar */
.models-toolbar {
    display: flex;
    gap: 8px;
    margin-bottom: 10px;
}

.models-search {
    flex: 1;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 8px 12px;
    font-size: 12px;
    color: var(--text-primary);
    outline: none;
    transition: all var(--transition-fast);
}

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

.models-search:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

.models-toolbar-buttons {
    display: flex;
    gap: 4px;
}

.toolbar-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.toolbar-btn svg {
    width: 16px;
    height: 16px;
    fill: var(--text-muted);
}

.toolbar-btn:hover {
    background: var(--bg-hover);
    border-color: var(--accent-primary);
}

.toolbar-btn:hover svg {
    fill: var(--accent-primary);
}

/* Model Name Input (for inline rename) */
.model-name-input {
    width: 100%;
    background: var(--bg-primary);
    border: 1px solid var(--accent-primary);
    border-radius: 4px;
    padding: 2px 6px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    outline: none;
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

.model-name-input:focus {
    outline: none;
}

/* Info Grid */
.info-grid {
    display: grid;
    gap: 10px;
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.info-label {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.info-value {
    font-size: 13px;
    color: var(--text-secondary);
    font-family: 'SF Mono', 'Monaco', monospace;
}

/* Panel header border radius fixes */
.panel-header {
    border-radius: 11px;
}

.panel.collapsible.expanded .panel-header {
    border-radius: 11px 11px 0 0;
}

/* Ensure proper stacking of panels */
.panel {
    position: relative;
    z-index: 1;
}

.panel:hover {
    z-index: 2;
}

/* Select dropdown fixes for panels */
.panel-content select {
    position: relative;
    z-index: 5;
}

/* Ensure panel content padding is consistent */
.panel-content > *:last-child {
    margin-bottom: 0;
}

/* Fix for slider controls spacing */
.panel-content .slider-control:first-child {
    padding-top: 0;
}

/* Improve button group spacing in panels */
.panel-content .button-group {
    margin-bottom: 8px;
}

/* Fix control row alignment */
.panel-content .control-row:first-child {
    padding-top: 0;
}