/* Medical Imaging App Styles - Sotis AI Design System */
/* Page header styles are in main style.css */

/* Container */
.medicalimg-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--space-md);
}

/* Admin Panel */
.admin-panel {
    max-width: 500px;
    margin: 0 auto var(--space-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.admin-panel-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-secondary);
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-primary);
    transition: background var(--transition-fast);
}

.admin-panel-toggle:hover {
    background: var(--violet-light);
}

[data-theme="dark"] .admin-panel-toggle:hover {
    background: rgba(192, 156, 240, 0.1);
}

.toggle-icon {
    font-size: 1.1rem;
}

.toggle-text {
    flex: 1;
    text-align: left;
    font-weight: 600;
}

.toggle-arrow {
    transition: transform var(--transition-fast);
}

.toggle-arrow.open {
    transform: rotate(180deg);
}

.admin-panel-content {
    display: none;
    padding: var(--space-md);
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
}

.admin-panel-content.open {
    display: block;
}

.admin-panel-content h3 {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}

.admin-stats {
    margin-bottom: var(--space-md);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-sm);
}

.stat-item {
    text-align: center;
    padding: var(--space-sm);
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
}

.stat-value {
    display: block;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--violet-dark);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.admin-actions {
    margin-bottom: var(--space-md);
}

.action-buttons {
    display: flex;
    gap: var(--space-sm);
}

.action-buttons .btn-danger {
    flex: 1;
    text-align: center;
    padding: var(--space-xs) var(--space-sm);
}

.admin-users {
    border-top: 1px solid var(--border-color);
    padding-top: var(--space-md);
}

.users-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.user-row {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
}

.user-name {
    font-weight: 600;
    color: var(--text-primary);
    min-width: 100px;
}

.user-stats {
    flex: 1;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.btn-small {
    padding: 4px 8px !important;
    font-size: 0.75rem !important;
}

/* Quick Start Section */
.quick-start-section {
    text-align: center;
    margin-bottom: var(--space-lg);
    padding: var(--space-lg);
    background: linear-gradient(135deg, rgba(192, 156, 240, 0.1), rgba(247, 230, 77, 0.05));
    border: 2px solid var(--violet-primary);
    border-radius: var(--radius-lg);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.quick-start-section h2 {
    color: var(--violet-dark);
    margin-bottom: var(--space-xs);
}

.quick-start-info {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.quick-start-buttons {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.quick-start-btn {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all var(--transition-base);
    flex: 1;
    min-width: 0;
}

.quick-start-btn .btn-icon {
    font-size: 2rem;
}

.quick-start-btn .btn-content {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.quick-start-btn .btn-title {
    font-weight: 600;
    font-size: 1.1rem;
}

.quick-start-btn .btn-subtitle {
    font-size: 0.85rem;
    opacity: 0.8;
}

.quick-start-btn.btn-primary {
    background: var(--violet-dark);
    color: var(--white);
}

.quick-start-btn.btn-primary:hover {
    background: var(--violet-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.quick-start-btn.btn-secondary {
    background: var(--card-bg);
    color: var(--violet-dark);
    border: 2px solid var(--violet-dark);
    padding: calc(var(--space-md) - 2px) calc(var(--space-lg) - 2px);
}

.quick-start-btn.btn-secondary:hover {
    background: var(--violet-dark);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Section Divider */
.section-divider {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.divider-line {
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

.divider-text {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    white-space: nowrap;
}

/* Login Prompt */
.login-prompt {
    text-align: center;
    padding: var(--space-md);
    max-width: 500px;
    margin: 0 auto var(--space-lg);
    color: var(--text-secondary);
}

.login-prompt a {
    color: var(--violet-dark);
    font-weight: 600;
    text-decoration: none;
}

.login-prompt a:hover {
    text-decoration: underline;
}

/* Upload Section */
.upload-section {
    display: flex;
    justify-content: center;
    margin-bottom: var(--space-lg);
}

.upload-cards-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    max-width: 500px;
    width: 100%;
}

/* Separator */
.upload-separator {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) 0;
}

.separator-line {
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

.separator-text {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.upload-card {
    background: var(--card-bg);
    border: 2px dashed var(--violet-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: center;
    width: 100%;
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.upload-card:hover {
    border-color: var(--violet-dark);
    box-shadow: var(--shadow-lg);
}

/* Example Select */
.example-select-wrapper {
    margin-bottom: var(--space-md);
}

.example-select {
    width: 100%;
    padding: var(--space-sm);
    font-size: 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--input-bg);
    color: var(--text-primary);
    cursor: pointer;
    transition: border-color var(--transition-base);
}

.example-select:hover,
.example-select:focus {
    border-color: var(--violet-primary);
    outline: none;
}

.example-select optgroup {
    font-weight: 600;
    color: var(--violet-dark);
}

.example-btn {
    width: 100%;
}

.upload-card h2 {
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.upload-info {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

/* File Input */
.file-input-wrapper {
    margin-bottom: var(--space-md);
}

.file-input-wrapper input[type="file"] {
    display: none;
}

.file-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
}

.file-label:hover {
    background: var(--violet-light);
    border-color: var(--violet-primary);
}

[data-theme="dark"] .file-label:hover {
    background: rgba(192, 156, 240, 0.1);
}

/* Drag and Drop */
.file-input-wrapper.drag-over .file-label {
    background: var(--violet-light);
    border-color: var(--violet-primary);
    box-shadow: 0 0 0 3px rgba(192, 156, 240, 0.3);
}

[data-theme="dark"] .file-input-wrapper.drag-over .file-label {
    background: rgba(192, 156, 240, 0.15);
}

.file-icon {
    font-size: 2.5rem;
}

.file-text {
    color: var(--violet-dark);
    font-weight: 600;
}

.file-name {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.file-name.has-file {
    color: var(--violet-dark);
    font-weight: 500;
}

/* Buttons */
.btn-primary {
    display: inline-block;
    background: var(--violet-dark);
    color: var(--white);
    padding: var(--space-sm) var(--space-md);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

.btn-primary:hover:not(:disabled) {
    background: var(--violet-primary);
    box-shadow: var(--shadow-hover);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-secondary {
    display: inline-block;
    background: transparent;
    color: var(--violet-dark);
    padding: var(--space-xs) var(--space-sm);
    border: 1px solid var(--violet-dark);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

.btn-secondary:hover {
    background: var(--violet-dark);
    color: var(--white);
}

.btn-danger {
    display: inline-block;
    background: transparent;
    color: #dc3545;
    padding: var(--space-xs) var(--space-sm);
    border: 1px solid #dc3545;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-danger:hover {
    background: #dc3545;
    color: var(--white);
}

.upload-btn {
    width: 100%;
    padding: var(--space-sm);
}

/* Form Errors */
.form-errors,
.field-errors {
    margin-bottom: var(--space-sm);
}

.error-message {
    color: #dc3545;
    font-size: 0.9rem;
    margin: var(--space-xs) 0;
}

/* Sessions Section */
.sessions-section {
    margin-bottom: var(--space-lg);
}

.sessions-section h2 {
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.sessions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-md);
}

.session-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    transition: box-shadow var(--transition-base);
}

.session-card:hover {
    box-shadow: var(--shadow-md);
}

.session-info h3 {
    color: var(--text-primary);
    font-size: 1rem;
    margin-bottom: var(--space-xs);
    word-break: break-all;
}

.session-meta {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.6;
}

.session-date,
.session-expiry {
    font-size: 0.8rem;
}

.session-actions {
    display: flex;
    gap: var(--space-xs);
    margin-top: auto;
}

/* Info Section */
.info-section {
    margin-top: var(--space-xl);
}

.info-section h2 {
    color: var(--text-primary);
    text-align: center;
    margin-bottom: var(--space-md);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
}

.info-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    text-align: center;
    transition: all var(--transition-base);
}

.info-card:hover {
    border-color: var(--violet-primary);
    box-shadow: var(--shadow-md);
}

.info-icon {
    font-size: 2rem;
    margin-bottom: var(--space-xs);
}

.info-card h3 {
    color: var(--violet-dark);
    font-size: 1rem;
    margin-bottom: var(--space-xs);
}

.info-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--space-xl);
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: var(--space-md);
}

.empty-state h2 {
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.empty-state p {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

/* ============================================
   VIEWER STYLES
   ============================================ */

.viewer-container {
    height: calc(100vh - 120px);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    padding: var(--space-sm);
}

/* Viewer Header */
.viewer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.viewer-title {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.viewer-title h1 {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin: 0;
}

.viewer-meta {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Toolbar */
.viewer-toolbar {
    display: flex;
    gap: var(--space-xs);
    background: var(--card-bg);
    padding: var(--space-xs);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.tool-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 1.2rem;
    transition: all var(--transition-fast);
}

.tool-btn:hover {
    background: var(--bg-secondary);
    border-color: var(--violet-primary);
}

.tool-btn.active {
    background: var(--violet-dark);
    border-color: var(--violet-dark);
    color: var(--white);
}

[data-theme="dark"] .tool-btn:not(.active) {
    color: var(--white);
}

.tool-btn-small {
    width: 28px;
    height: 28px;
    font-size: 0.85rem;
    font-weight: 600;
}

.toolbar-group {
    display: flex;
    align-items: center;
    gap: 4px;
}

.toolbar-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-right: 2px;
}

/* Checkbox styling */
.toolbar-checkbox {
    padding: 0 4px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    font-size: 0.8rem;
    color: var(--text-secondary);
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    width: 14px;
    height: 14px;
    cursor: pointer;
    accent-color: var(--violet-primary);
}

.checkbox-label:hover {
    color: var(--text-primary);
}

.checkbox-label input[type="checkbox"]:checked + span {
    color: var(--violet-primary);
}

.tool-btn[title]:hover::after {
    content: attr(title);
    position: absolute;
    bottom: -24px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--dark-primary);
    color: var(--white);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    white-space: nowrap;
}

.toolbar-divider {
    width: 1px;
    background: var(--border-color);
    margin: 0 var(--space-xs);
}

/* Toolbar Colormap */
.toolbar-colormap {
    display: flex;
    align-items: center;
    gap: 4px;
}

.toolbar-colormap label {
    font-size: 1.1rem;
    cursor: pointer;
}

.toolbar-select {
    padding: 4px 8px;
    font-size: 0.85rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--input-bg);
    color: var(--text-primary);
    cursor: pointer;
    transition: border-color var(--transition-fast);
}

.toolbar-select:hover,
.toolbar-select:focus {
    border-color: var(--violet-primary);
    outline: none;
}

/* Toolbar Dropdown */
.toolbar-dropdown {
    position: relative;
}

.toolbar-dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 4px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    padding: var(--space-sm);
    min-width: 160px;
    z-index: 100;
}

.toolbar-dropdown-content.open {
    display: block;
    animation: dropdownFadeIn 0.15s ease-out;
}

@keyframes dropdownFadeIn {
    from {
        opacity: 0;
        transform: translateY(-4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dropdown-section {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-sm);
    padding: 4px 0;
}

.dropdown-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    min-width: 40px;
}

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

.dropdown-divider {
    height: 1px;
    background: var(--border-color);
    margin: 6px 0;
}

/* Dropdown checkbox styling */
.toolbar-dropdown-content .checkbox-label {
    font-size: 0.8rem;
}

.toolbar-dropdown-content .checkbox-label input[type="checkbox"] {
    width: 14px;
    height: 14px;
}

/* More button active state when dropdown is open */
#toolbar-more-btn.active {
    background: var(--violet-dark);
    border-color: var(--violet-dark);
    color: var(--white);
}

/* Viewer Main Area */
.viewer-main {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: var(--space-sm);
    min-height: 0;
}

/* View Panel */
.view-panel {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.view-panel.panel-info {
    grid-row: 2;
    grid-column: 2;
}

/* View Header */
.view-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.view-label {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.view-label-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.view-label-dot.axial { background: #4CAF50; }
.view-label-dot.sagittal { background: #2196F3; }
.view-label-dot.coronal { background: #FF9800; }

.view-label-text {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.slice-info {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-left: var(--space-sm);
}

/* Canvas Container */
.canvas-container {
    flex: 1;
    position: relative;
    background: #000;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.canvas-container canvas {
    max-width: 100%;
    max-height: 100%;
    image-rendering: pixelated;
}

/* Slice Slider */
.slice-slider-container {
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.slice-slider {
    width: 100%;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--border-color);
    border-radius: 3px;
    outline: none;
    cursor: pointer;
}

.slice-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--violet-dark);
    border-radius: 50%;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.slice-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.slice-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--violet-dark);
    border-radius: 50%;
    border: none;
    cursor: pointer;
}

/* Info Panel */
.info-panel {
    padding: var(--space-sm);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    overflow-y: auto;
}

.info-panel h3 {
    color: var(--text-primary);
    font-size: 0.95rem;
    margin-bottom: var(--space-xs);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.info-group {
    background: var(--bg-secondary);
    padding: var(--space-sm);
    border-radius: var(--radius-sm);
}

.info-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    padding: 2px 0;
}

.info-row .label {
    color: var(--text-secondary);
}

.info-row .value {
    color: var(--text-primary);
    font-weight: 500;
}

/* Window Level Controls */
.window-level-controls {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.wl-row {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.wl-row label {
    color: var(--text-secondary);
    font-size: 0.85rem;
    min-width: 50px;
}

.wl-row input[type="range"] {
    flex: 1;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--border-color);
    border-radius: 2px;
}

.wl-row input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 12px;
    height: 12px;
    background: var(--violet-dark);
    border-radius: 50%;
    cursor: pointer;
}

.wl-row .value {
    color: var(--text-primary);
    font-size: 0.8rem;
    min-width: 50px;
    text-align: right;
}

/* Help Section */
.help-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.help-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.8rem;
}

.help-icon {
    font-size: 0.9rem;
    width: 20px;
    text-align: center;
}

.help-text {
    color: var(--text-secondary);
}

/* Transform Buttons in Toolbar - active state */
.tool-btn.transform-btn.active {
    background: var(--violet-primary);
    border-color: var(--violet-dark);
    color: var(--dark-text);
}

.tool-btn.transform-btn.active:hover {
    background: var(--violet-dark);
    color: var(--white);
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--border-color);
    border-top-color: var(--violet-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-text {
    color: var(--white);
    margin-top: var(--space-sm);
    font-size: 1rem;
}

/* Error Message */
.viewer-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-align: center;
    padding: var(--space-lg);
}

.error-icon {
    font-size: 4rem;
    margin-bottom: var(--space-md);
}

.viewer-error h2 {
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.viewer-error p {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

/* Responsive */
@media (max-width: 1024px) {
    .viewer-container {
        height: auto;
        min-height: calc(100vh - 120px);
    }

    .viewer-main {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto auto;
        gap: var(--space-sm);
    }

    .view-panel {
        min-height: 300px;
    }

    .view-panel.panel-info {
        grid-row: 4;
        grid-column: 1;
        min-height: auto;
    }

    .canvas-container {
        min-height: 250px;
    }

    .viewer-toolbar {
        flex-wrap: wrap;
        justify-content: center;
    }

    .toolbar-group {
        margin: 4px 0;
    }

    .viewer-header {
        flex-direction: column;
        gap: var(--space-xs);
    }

    .viewer-title {
        flex-wrap: wrap;
        justify-content: center;
        text-align: center;
    }

    .viewer-title h1 {
        font-size: 1rem;
        word-break: break-all;
    }
}

@media (max-width: 768px) {
    .medicalimg-container {
        padding: var(--space-sm);
    }

    .upload-card {
        padding: var(--space-md);
    }

    .sessions-grid {
        grid-template-columns: 1fr;
    }

    .info-grid {
        grid-template-columns: 1fr 1fr;
    }

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

@media (max-width: 480px) {
    .info-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Notification
   ============================================ */
.viewer-notification {
    position: fixed;
    top: 80px;
    left: 50%;
    transform: translateX(-50%);
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    z-index: 1000;
    box-shadow: var(--shadow-md);
    display: none;
}

.viewer-notification.success {
    background: rgba(34, 197, 94, 0.95);
    color: white;
}

.viewer-notification.error {
    background: rgba(239, 68, 68, 0.95);
    color: white;
}

.viewer-notification.info {
    background: var(--violet-primary);
    color: white;
}

/* Harmonize Button */
.btn-harmonize {
    width: 100%;
    margin-top: 8px;
    padding: 8px 12px;
    background: var(--violet-dark);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition-fast);
}

.btn-harmonize:hover {
    background: var(--violet-primary);
}

.btn-harmonize.btn-recommended {
    background: var(--yellow-primary);
    color: var(--dark-text);
    animation: pulse-recommend 2s infinite;
}

.btn-harmonize.btn-recommended:hover {
    background: var(--yellow-dark);
}

@keyframes pulse-recommend {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(247, 230, 77, 0.4);
    }
    50% {
        box-shadow: 0 0 0 8px rgba(247, 230, 77, 0);
    }
}

/* ===================================
   Harmonization Alert
   =================================== */
.harmonization-alert {
    display: none;
    align-items: flex-start;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: linear-gradient(135deg, rgba(247, 230, 77, 0.15), rgba(247, 230, 77, 0.05));
    border: 1px solid var(--yellow-primary);
    border-radius: var(--radius-sm);
    margin: 0 var(--space-sm) var(--space-sm);
}

.harmonization-alert .alert-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.harmonization-alert .alert-content {
    flex: 1;
}

.harmonization-alert .alert-title {
    font-weight: 600;
    color: var(--yellow-dark);
    margin-bottom: 4px;
}

.harmonization-alert .alert-message {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.harmonization-alert .alert-issues {
    margin: 8px 0 0 0;
    padding-left: 20px;
    list-style: disc;
}

.harmonization-alert .alert-issues li {
    margin: 4px 0;
}

.harmonization-alert .alert-issues .issue-high {
    color: #e74c3c;
    font-weight: 500;
}

.harmonization-alert .alert-issues .issue-medium {
    color: var(--yellow-dark);
}

.harmonization-alert .alert-actions {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-shrink: 0;
}

.harmonization-alert .btn-harmonize-alert {
    padding: 8px 16px;
    background: var(--yellow-primary);
    color: var(--dark-text);
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    white-space: nowrap;
}

.harmonization-alert .btn-harmonize-alert:hover {
    background: var(--yellow-dark);
}

.harmonization-alert .btn-dismiss-alert {
    padding: 6px 12px;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.harmonization-alert .btn-dismiss-alert:hover {
    background: var(--bg-secondary);
}

/* ===================================
   Structure Status Indicator
   =================================== */
.structure-status {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
    font-size: 0.85rem;
    font-weight: 500;
}

.structure-status.status-ok {
    background: rgba(46, 204, 113, 0.15);
    color: #27ae60;
    border: 1px solid rgba(46, 204, 113, 0.3);
}

.structure-status.status-warning {
    background: rgba(247, 230, 77, 0.15);
    color: var(--yellow-dark);
    border: 1px solid var(--yellow-primary);
}

.structure-status .status-icon {
    font-size: 1rem;
}

/* Value warning highlight */
.info-row .value.value-warning {
    color: #e74c3c;
    font-weight: 600;
}

/* ===================================
   Expanded View Mode (Double-click)
   =================================== */

/* Expand button on hover */
.expand-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.6);
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    font-size: 14px;
    opacity: 0;
    transition: opacity var(--transition-fast), background var(--transition-fast);
    cursor: pointer;
    z-index: 10;
}

.canvas-container:hover .expand-btn {
    opacity: 0.8;
}

.expand-btn:hover {
    opacity: 1;
    background: rgba(0, 0, 0, 0.8);
}

/* Cursor hint for double-click */
.view-panel:not(.panel-info) .canvas-container {
    cursor: default;
}

/* When a panel is expanded */
.viewer-main.has-expanded {
    display: block;
    position: relative;
}

.viewer-main.has-expanded .view-panel {
    display: none;
}

.viewer-main.has-expanded .view-panel.expanded {
    display: flex;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 100;
    border-radius: var(--radius-md);
    animation: expandIn 0.2s ease-out;
}

@keyframes expandIn {
    from {
        opacity: 0.8;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Close button for expanded view */
.view-panel.expanded .view-header {
    position: relative;
}

.view-panel.expanded .expand-close-btn {
    display: flex;
}

.expand-close-btn {
    display: none;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 1rem;
    transition: all var(--transition-fast);
    margin-left: auto;
}

.expand-close-btn:hover {
    background: var(--violet-dark);
    color: var(--white);
    border-color: var(--violet-dark);
}

/* In expanded mode, button shows collapse icon */
.view-panel.expanded .expand-btn {
    opacity: 0.5;
}

.view-panel.expanded .canvas-container:hover .expand-btn {
    opacity: 0.8;
}

.view-panel.expanded .expand-btn:hover {
    opacity: 1;
}

/* Adjust canvas in expanded view for better sizing */
.view-panel.expanded .canvas-container {
    min-height: 0;
}

.view-panel.expanded .canvas-container canvas {
    max-width: 100%;
    max-height: 100%;
}

/* ===================================
   Fullscreen Mode
   =================================== */

.viewer-container.fullscreen-mode {
    height: 100vh;
    width: 100vw;
    padding: var(--space-sm);
    background: var(--bg-primary);
}

.viewer-container.fullscreen-mode .viewer-main {
    height: calc(100vh - 100px);
}

/* Hide unnecessary elements in fullscreen */
.viewer-container.fullscreen-mode .viewer-title .btn-secondary {
    display: none;
}

/* Larger panels in fullscreen */
.viewer-container.fullscreen-mode .view-panel {
    min-height: 0;
}

.viewer-container.fullscreen-mode .canvas-container {
    flex: 1;
}

/* Fullscreen button active state */
#tool-fullscreen.active {
    background: var(--violet-dark);
    border-color: var(--violet-dark);
    color: var(--white);
}

/* Fullscreen responsive - make 2x2 grid on fullscreen */
.viewer-container.fullscreen-mode .viewer-main {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
}

/* Escape hint in fullscreen */
.viewer-container.fullscreen-mode::after {
    content: 'Echap ou F11 pour quitter';
    position: fixed;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.7);
    color: var(--white);
    padding: 6px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}

.viewer-container.fullscreen-mode:hover::after {
    opacity: 0.8;
}