/* Rust CUI Previewer - Dark Theme */
:root {
    --bg-primary: #1a1a1a;
    --bg-secondary: #242424;
    --bg-tertiary: #2d2d2d;
    --bg-hover: #383838;
    --border-color: #3d3d3d;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --text-muted: #666;
    --accent-primary: #cd412b;
    --accent-secondary: #8b5a2b;
    --accent-success: #4a7c4e;
    --accent-info: #2d5a7c;
    --accent-warning: #7c6a2d;
    --shadow: 0 2px 8px rgba(0,0,0,0.4);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
}

/* App Container */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* Header */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 20px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    height: 60px;
}

.header-left h1 {
    font-size: 20px;
    font-weight: 600;
    color: var(--accent-primary);
}

.header-left .subtitle {
    font-size: 12px;
    color: var(--text-secondary);
    margin-left: 10px;
}

.header-center {
    display: flex;
    gap: 10px;
}

.input-mode-toggle {
    display: flex;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
}

.mode-btn {
    padding: 8px 16px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    font-size: 13px;
}

.mode-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

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

.header-right {
    display: flex;
    gap: 10px;
    align-items: center;
}

.header-right select {
    padding: 8px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 4px;
    cursor: pointer;
}

.btn-primary {
    padding: 8px 16px;
    background: var(--accent-primary);
    border: none;
    color: white;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
    transition: background 0.2s;
}

.btn-primary:hover {
    background: #d9503c;
}

.btn-small {
    padding: 4px 10px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: 3px;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.2s;
}

.btn-small:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

/* Main Content */
.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Editor Panel */
.editor-panel {
    width: 45%;
    min-width: 300px;
    display: flex;
    flex-direction: column;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 15px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    font-size: 13px;
    font-weight: 500;
}

.editor-actions {
    display: flex;
    gap: 5px;
}

.editor-container {
    flex: 1;
    overflow: hidden;
}

.editor-container .CodeMirror {
    height: 100%;
    font-size: 13px;
    line-height: 1.5;
}

.editor-footer {
    display: flex;
    justify-content: space-between;
    padding: 6px 15px;
    background: var(--bg-tertiary);
    border-top: 1px solid var(--border-color);
    font-size: 12px;
}

.status-ok {
    color: var(--accent-success);
}

.status-error {
    color: var(--accent-primary);
}

/* Resize Handle */
.resize-handle {
    width: 5px;
    background: var(--border-color);
    cursor: col-resize;
    transition: background 0.2s;
}

.resize-handle:hover {
    background: var(--accent-primary);
}

/* Preview Panel */
.preview-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
}

.preview-controls {
    display: flex;
    gap: 15px;
    align-items: center;
    font-size: 12px;
}

.preview-controls label {
    display: flex;
    align-items: center;
    gap: 5px;
    color: var(--text-secondary);
}

.preview-controls select {
    padding: 4px 8px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 3px;
    font-size: 12px;
}

.preview-controls input[type="checkbox"] {
    accent-color: var(--accent-primary);
}

.preview-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: auto;
    padding: 20px;
    background:
        radial-gradient(circle at center, #252525 0%, #1a1a1a 100%);
}

.preview-viewport {
    position: relative;
    background: #0a0a0a;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

#previewCanvas {
    display: block;
}

.cui-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.cui-overlay > * {
    pointer-events: auto;
}

.preview-footer {
    display: flex;
    justify-content: space-between;
    padding: 6px 15px;
    background: var(--bg-tertiary);
    border-top: 1px solid var(--border-color);
    font-size: 12px;
    color: var(--text-secondary);
}

/* Inspector Panel */
.inspector-panel {
    height: 200px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.inspector-panel.collapsed {
    height: 35px;
}

.inspector-panel.collapsed .inspector-content {
    display: none;
}

.inspector-content {
    flex: 1;
    display: flex;
    overflow: hidden;
}

.element-tree {
    width: 300px;
    border-right: 1px solid var(--border-color);
    overflow: auto;
    padding: 10px;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 12px;
}

.tree-node {
    padding: 3px 5px;
    cursor: pointer;
    border-radius: 3px;
    white-space: nowrap;
}

.tree-node:hover {
    background: var(--bg-hover);
}

.tree-node.selected {
    background: var(--accent-info);
}

.tree-node .node-type {
    color: var(--accent-primary);
}

.tree-node .node-name {
    color: var(--accent-success);
    margin-left: 5px;
}

.tree-children {
    margin-left: 15px;
    border-left: 1px dashed var(--border-color);
    padding-left: 5px;
}

.element-details {
    flex: 1;
    padding: 10px;
    overflow: auto;
    font-size: 13px;
}

.element-details .placeholder {
    color: var(--text-muted);
    font-style: italic;
}

.detail-section {
    margin-bottom: 15px;
}

.detail-section h4 {
    color: var(--accent-primary);
    margin-bottom: 8px;
    font-size: 12px;
    text-transform: uppercase;
}

.detail-row {
    display: flex;
    padding: 3px 0;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 12px;
}

.detail-label {
    width: 120px;
    color: var(--text-secondary);
}

.detail-value {
    color: var(--text-primary);
}

.color-preview {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 1px solid var(--border-color);
    margin-right: 5px;
    vertical-align: middle;
    border-radius: 2px;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.7);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: 8px;
    width: 500px;
    max-width: 90%;
    box-shadow: var(--shadow);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background: var(--accent-primary);
    border-radius: 8px 8px 0 0;
}

.modal-header h3 {
    color: white;
    font-size: 16px;
}

.modal-close {
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
    line-height: 1;
}

.modal-body {
    padding: 20px;
    max-height: 400px;
    overflow: auto;
}

.modal-body pre {
    background: var(--bg-tertiary);
    padding: 15px;
    border-radius: 4px;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 12px;
    white-space: pre-wrap;
    word-break: break-all;
    color: #ff6b6b;
}

/* Grid Overlay */
.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 10% 10%;
}

/* Bounds Overlay */
.bounds-overlay {
    position: absolute;
    border: 1px dashed rgba(255,100,100,0.5);
    pointer-events: none;
}

.bounds-label {
    position: absolute;
    top: -18px;
    left: 0;
    background: rgba(200,50,50,0.8);
    color: white;
    font-size: 10px;
    padding: 2px 5px;
    border-radius: 2px;
    white-space: nowrap;
}

/* CUI Elements rendered as DOM */
.cui-element {
    position: absolute;
    box-sizing: border-box;
}

.cui-panel {
    overflow: hidden;
}

.cui-label {
    display: flex;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.cui-button {
    cursor: pointer;
    display: flex;
    transition: filter 0.1s;
}

.cui-button:hover {
    filter: brightness(1.2);
}

.cui-button:active {
    filter: brightness(0.9);
}

.cui-input {
    background: rgba(0,0,0,0.5);
    border: 1px solid rgba(255,255,255,0.2);
    color: white;
    padding: 5px;
    font-family: inherit;
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}