:root {
    /* Dark mode colors (default) */
    --bg-primary: #1e1e1e;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #3c3c3c;
    --text-primary: #d4d4d4;
    --text-secondary: #858585;
    --border-color: #111111;
    --shadow-color: #1e1e1e;
}

body.light-mode {
    /* Light mode colors */
    --bg-primary: #eeeeff;
    --bg-secondary:#ccccee;
    --bg-tertiary: #bbbbee;
    --text-primary: #182247;
    --text-secondary: #6e6e6e;
    --border-color: #8888cc;
    --shadow-color: #8888cc;
}

/* Fix for mobile browsers - use 100% instead of 100vh */
html, body {
    height: 100%;
}

body {
    margin: 0;
    padding: 0px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-family: system-ui, -apple-system, sans-serif;
    overflow: hidden;
    transition: background 0.3s, color 0.3s;
}

#editorTabs {
    display: flex;
    gap: 5px;
    margin-bottom: 5px;
}

.editorTab {
    background:var(--bg-secondary);
    color: var(--text-secondary);
    border: none;
    padding: 6px 12px;
    cursor: pointer;
    font-size: 13px;
    transition: background 0.3s, color 0.3s;
}

.editorTab.active {
    background:var(--bg-primary);
    color: var(--text-primary);
    box-shadow: 2px 2px 2px var(--shadow-color);
    border-top: 1px solid var(--border-color);
        border-right: 1px solid var(--border-color);
        border-left: 1px solid var(--border-color);
}

/* Shared editor container styles */
.editor-panel {
    flex: 1;
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: 2px 2px 2px var(--shadow-color);
}


#container {
    display: flex;
    height: 100%;  /* Use 100% instead of 100vh for mobile browser compatibility */
    gap: 0;
    position: relative;
}

/* Three main panels with default 50/30/20 split */
#devPanel {
    width: 50%;
    min-width: 300px;
    display: flex;
    flex-direction: column;
    gap: 0px;
    overflow: hidden;
    transition: width 0.3s ease;
}

#displayPanel {
    width: 30%;
    min-width: 250px;
    display: flex;
    flex-direction: column;
    gap: 0px;
    overflow: hidden;
    transition: width 0.3s ease;
}

#galleryPanel {
    width: 20%;
    min-width: 200px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--bg-primary);
    transition: width 0.3s ease;
}

/* Collapsed panel state */
#devPanel.collapsed,
#galleryPanel.collapsed {
    min-width: 0;
    max-width: 0;
    width: 0 !important;
}

#devPanel.collapsed > *:not(.panel-content-hidden),
#galleryPanel.collapsed > *:not(.panel-content-hidden) {
    display: none;
}

/* Canvas container - default to fill space, but can be explicitly sized */
#displayPanel #canvasContainer {
    flex: 1 1 auto;
    min-height: 256px;
}

/* When user sets explicit height via divider, disable flex growth */
#displayPanel #canvasContainer.explicit-height {
    flex: 0 0 auto;
}

#displayPanel #controls {
    flex-shrink: 0;
    padding: 10px;
}

/* Panel dividers */
.panel-divider {
    width: 8px;
    background: var(--bg-secondary);
    cursor: ew-resize;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
    user-select: none;
}

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

.panel-divider.dragging {
    background: #0e639c;
}

.divider-handle {
    font-size: 20px;
    color: var(--text-secondary);
    pointer-events: none;
    opacity: 0.6;
    transition: opacity 0.2s, transform 0.2s;
    padding: 4px;
    border-radius: 4px;
    background: transparent;
}

.panel-divider:hover .divider-handle {
    opacity: 1;
    color: var(--text-primary);
    background: rgba(14, 99, 156, 0.2);
}

.panel-divider:active .divider-handle {
    transform: scale(0.95);
}

/* Horizontal divider for canvas resizing */
.horizontal-divider {
    height: 8px;
    background: var(--bg-secondary);
    cursor: ns-resize;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
    user-select: none;
}

.horizontal-divider:hover {
    background: var(--bg-tertiary);
}

.horizontal-divider.dragging {
    background: #0e639c;
}

.divider-handle.horizontal {
    font-size: 20px;
    transform: rotate(90deg);
}

/* Gallery panel */
.gallery-header {
    padding: 2px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

#galleryContent {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 2px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    grid-auto-rows: min-content;
    gap: 10px;
}

/* Custom scrollbar for gallery */
#galleryContent::-webkit-scrollbar {
    width: 8px;
}

#galleryContent::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

#galleryContent::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 3px;
}

#galleryContent::-webkit-scrollbar-thumb:hover {
    background: #0e639c;
}

.gallery-item {
    cursor: pointer;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
    background: var(--bg-secondary);
}

.gallery-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px var(--shadow-color);
    border-color: #0e639c;
}

.gallery-item-thumbnail {
    width: 100%;
    aspect-ratio: 1 / 1;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 12px;
    position: relative;
}

.gallery-item-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gallery-item-icons {
    position: absolute;
    top: 4px;
    right: 4px;
    display: flex;
    gap: 2px;
    background: rgba(0, 0, 0, 0.6);
    padding: 2px 4px;
    border-radius: 3px;
}

.gallery-item-icon {
    font-size: 10px;
    opacity: 0.9;
}

.gallery-item-info {
    padding: 4px 6px;
}

.gallery-item-title {
    font-size: 10px;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.2;
}

.gallery-delete-btn {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 24px;
    height: 24px;
    border: none;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s, background 0.2s;
    padding: 0;
}

.gallery-item:hover .gallery-delete-btn {
    opacity: 1;
}

.gallery-delete-btn:hover {
    background: rgba(220, 50, 50, 0.9);
}

#editorContainer {
    flex: 1;
    border: 1px solid var(--border-color);
    overflow: hidden;
    position: relative;
    
}

#loadingMessage {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--text-secondary);
    font-size: 14px;
}

#controls {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

button {
    background: #0e639c;
    color: white;
    border: none;
    padding: 8px 16px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: background 0.2s;
}

button:hover {
    background: #1177bb;
}

button.playing {
    background: #16825d;
}

button.playing:hover {
    background: #1a9870;
}

button.paused {
    background: #c5a332;
}

button.paused:hover {
    background: #d4b547;
}

.verticalSlider {
    writing-mode: bt-lr; /* IE */
    -webkit-appearance: slider-vertical; /* WebKit */
    appearance: slider-vertical; /* Standard */
    width: 8px;
    height: 80px;
    padding: 0;
    margin: 0;
}

.sliderContainer {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
}

#errorDisplay {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: 5px;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 12px;
    min-height: 20px;
    max-height: 120px;
    overflow-y: auto;
    transition: background 0.3s, border 0.3s;
}
.uiBtn {
    padding: 5px;
    min-width: 60px;
    min-height: 20px;

}
#vim-status {
    display: none;  /* Hidden by default, shown when vim mode is active */
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: 5px;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 12px;
        min-height: 20px;
        max-height: 120px;
        overflow-y: auto;
        transition: background 0.3s, border 0.3s;
}

.error { color: #f48771; }
.success { color: #4ec9b0; }
.info { color: #9cdcfe; }

#canvasContainer {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    /*border: 1px solid var(--border-color);*/
    background: var(--bg-tertiary);
    overflow: hidden;
}

#canvas {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
    /* image-rendering set dynamically via JS */
}

/* Old resize handle removed - using panel dividers now */

.hint {
    color: var(--text-secondary);
    font-size: 12px;
}

.statusBadge {
    display: inline-block;
    padding: 2px 8px;
    font-size: 11px;
    font-weight: bold;
}

.statusBadge.playing {
    background: #16825d;
    color: white;
}

.statusBadge.paused {
    background: #c5a332;
    color: white;
}

/* Save Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
}

.modal-content {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 24px;
    min-width: 400px;
    max-width: 500px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.modal-content h2 {
    margin: 0 0 20px 0;
    color: var(--text-primary);
    font-size: 20px;
}

.modal-field {
    margin-bottom: 16px;
}

.modal-field label {
    display: block;
    margin-bottom: 6px;
    color: var(--text-primary);
    font-size: 13px;
}

.modal-field input,
.modal-field textarea {
    width: 100%;
    padding: 8px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 13px;
    box-sizing: border-box;
}

.modal-field input:focus,
.modal-field textarea:focus {
    outline: none;
    border-color: var(--accent-color);
}

.modal-field textarea {
    resize: vertical;
}

.modal-buttons {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 20px;
}

.modal-buttons button {
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    cursor: pointer;
    font-size: 13px;
}

.modal-buttons button:hover {
    background: var(--bg-tertiary);
}

.modal-buttons button.primary {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: white;
}

.modal-buttons button.primary:hover {
    filter: brightness(1.1);
}

/* Gallery Tabs */
.gallery-tab:hover {
    color: var(--text-primary);
    background: var(--bg-primary);
}

.gallery-tab.active {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color) !important;
    font-weight: 500;
}

/* Edit Shader Button */
#editShaderButton:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border-color: var(--accent-color);
}

/* Like Button */
#likeButton:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

#likeButton.liked {
    color: var(--text-primary);
}

#likeButton.liked #likeIcon {
    color: #e74c3c;
}

/* Like animation */
@keyframes likePress {
    0% { transform: scale(1); }
    50% { transform: scale(1.3); }
    100% { transform: scale(1); }
}

.like-animate {
    animation: likePress 0.3s ease-out;
}

/* Top-level tabs (Comments / Gallery) */
.top-level-tab:hover {
    color: var(--text-primary) !important;
    background: var(--bg-secondary);
}

/* Comments */
.comment-item {
    transition: background 0.2s;
}

.comment-item:hover {
    background: var(--bg-primary) !important;
}

.comment-text p {
    margin: 0.5em 0;
}

.comment-text p:first-child {
    margin-top: 0;
}

.comment-text p:last-child {
    margin-bottom: 0;
}

.comment-text code {
    background: var(--bg-primary);
    padding: 2px 4px;
    border-radius: 3px;
    font-size: 12px;
    font-family: 'Monaco', 'Menlo', 'Consolas', monospace;
}

.comment-text pre {
    background: var(--bg-primary);
    padding: 8px;
    border-radius: 4px;
    overflow-x: auto;
}

.comment-text pre code {
    background: none;
    padding: 0;
}

.comment-text a {
    color: var(--accent-color);
    text-decoration: none;
}

.comment-text a:hover {
    text-decoration: underline;
}