/* ============================================================
   EYE — 3D Object Viewer | Sci-Fi HUD / FUI Design System
   ============================================================ */

/* --- VARIABLES --- */
:root {
    --bg-primary: #080808;
    --bg-panel: rgba(10, 10, 10, 0.92);
    --bg-panel-solid: #0d0d0d;
    --bg-input: #111;
    --bg-hover: #1a1a1a;

    --accent: #e63946;
    --accent-dim: rgba(230, 57, 70, 0.3);
    --accent-glow: rgba(230, 57, 70, 0.15);
    --accent-bright: #ff4757;

    --text-primary: #e0e0e0;
    --text-secondary: #aaa;
    --text-dim: #999;
    --text-highlight: #fff;

    --border: #222;
    --border-accent: #e63946;
    --border-dim: rgba(230, 57, 70, 0.2);

    --font-mono: 'Share Tech Mono', 'Courier New', monospace;
    --font-ui: 'Rajdhani', 'Arial', sans-serif;

    --panel-width: 280px;
    --top-bar-height: 48px;
    --bottom-bar-height: 50px;
    --corner-size: 8px;
    --radius: 2px;

    --transition: 0.2s ease;
}

/* --- LIGHT THEME OVERRIDES --- */
[data-theme="light"] {
    --bg-primary: #e8e8e8;
    --bg-panel: rgba(240, 240, 240, 0.95);
    --bg-panel-solid: #f0f0f0;
    --bg-input: #ddd;
    --bg-hover: #d0d0d0;

    --accent: #c62836;
    --accent-dim: rgba(198, 40, 54, 0.25);
    --accent-glow: rgba(198, 40, 54, 0.10);
    --accent-bright: #e63946;

    --text-primary: #1a1a1a;
    --text-secondary: #555;
    --text-dim: #777;
    --text-highlight: #000;

    --border: #bbb;
    --border-accent: #c62836;
    --border-dim: rgba(198, 40, 54, 0.2);
}

[data-theme="light"] body::before {
    background-image:
        linear-gradient(rgba(198, 40, 54, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(198, 40, 54, 0.04) 1px, transparent 1px);
}

[data-theme="light"] body::after {
    background: repeating-linear-gradient(0deg,
            transparent,
            transparent 2px,
            rgba(255, 255, 255, 0.03) 2px,
            rgba(255, 255, 255, 0.03) 4px);
}

[data-theme="light"] .comparison-slot .viewport-label {
    background: rgba(240, 240, 240, 0.7);
}

[data-theme="light"] .slot-clear-btn {
    background: rgba(240, 240, 240, 0.7);
}

[data-theme="light"] #loading-overlay {
    background: rgba(240, 240, 240, 0.85);
}

/* --- THEME TOGGLE --- */
.theme-toggle-btn {
    position: relative;
    overflow: hidden;
}

.theme-toggle-btn .theme-icon {
    transition: transform 0.3s ease, opacity 0.3s ease;
}

/* --- COMPARISON TOOLBAR --- */
.comparison-toolbar {
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 20;
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.camera-lock-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 1px;
    cursor: pointer;
    transition: var(--transition);
}

.camera-lock-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 8px var(--accent-glow);
}

.camera-lock-btn.active {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-glow);
}

/* --- RESET --- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html,
body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 12px;
    line-height: 1.4;
    -webkit-font-smoothing: antialiased;
}

body {
    display: flex;
    flex-direction: column;
}

html {
    zoom: 1.25;
}

/* --- SCROLLBAR --- */
::-webkit-scrollbar {
    width: 4px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--accent-dim);
    border-radius: 2px;
}

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

/* ============================================================
   TOP BAR
   ============================================================ */
#top-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--top-bar-height);
    padding: 0 16px;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border);
    position: relative;
    z-index: 100;
}

#top-bar::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-dim), var(--accent), var(--accent-dim), transparent);
}

.top-bar-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    font-family: var(--font-mono);
    font-size: 18px;
    letter-spacing: 4px;
    color: var(--text-highlight);
}

.logo-bracket {
    color: var(--accent);
    font-weight: 700;
}

.logo-text {
    color: var(--text-highlight);
}

.top-bar-divider {
    display: inline-block;
    width: 1px;
    height: 20px;
    background: var(--border);
}

.top-bar-label {
    font-family: var(--font-ui);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 3px;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.top-bar-center {
    display: flex;
    align-items: center;
    gap: 16px;
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* --- Upload Button --- */
.upload-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: transparent;
    border: 1px solid var(--accent);
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 1px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.upload-btn:hover {
    background: var(--accent-glow);
    box-shadow: 0 0 12px var(--accent-glow), inset 0 0 12px var(--accent-glow);
}

.upload-icon {
    font-size: 12px;
}

/* --- Format Badges --- */
.format-badges {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
}

.badge {
    padding: 2px 6px;
    font-size: 9px;
    font-family: var(--font-mono);
    letter-spacing: 1px;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    background: transparent;
}

.badge.coming-soon {
    border-style: dashed;
    opacity: 0.4;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.hud-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 1px;
    cursor: pointer;
    transition: var(--transition);
}

.hud-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 8px var(--accent-glow);
}

.hud-btn.active {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-glow);
}

.hud-btn.full-width {
    width: 100%;
    justify-content: center;
    margin-top: 8px;
}

.hud-btn-sm {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 10px;
    cursor: pointer;
    transition: var(--transition);
}

.hud-btn-sm:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.hud-btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
}

.hud-btn-icon:hover:not(:disabled) {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 8px var(--accent-glow);
}

.hud-btn-icon:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.hud-btn-icon.active {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-glow);
}

.btn-icon {
    font-size: 14px;
}

/* ============================================================
   MAIN LAYOUT
   ============================================================ */
#main-layout {
    display: flex;
    flex: 1;
    min-height: 0;
    position: relative;
    overflow: hidden;
}

/* --- SIDEBARS --- */
.sidebar {
    width: var(--panel-width);
    min-width: var(--panel-width);
    background: var(--bg-panel);
    border-right: 1px solid var(--border);
    overflow-y: auto;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    gap: 0;
    z-index: 50;
}

#sidebar-right {
    border-right: none;
    border-left: 1px solid var(--border);
}

/* ============================================================
   PANELS
   ============================================================ */
.panel {
    border-bottom: 1px solid var(--border);
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    position: relative;
    cursor: default;
}

.panel-title {
    font-family: var(--font-ui);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 3px;
    color: var(--accent);
    text-transform: uppercase;
}

.panel-toggle {
    background: none;
    border: none;
    color: var(--text-dim);
    font-size: 14px;
    cursor: pointer;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.panel-toggle:hover {
    color: var(--accent);
}

.panel-corner {
    position: absolute;
    width: var(--corner-size);
    height: var(--corner-size);
}

.panel-corner.tl {
    top: 0;
    left: 0;
    border-top: 1px solid var(--accent);
    border-left: 1px solid var(--accent);
}

.panel-corner.tr {
    top: 0;
    right: 0;
    border-top: 1px solid var(--accent);
    border-right: 1px solid var(--accent);
}

.panel-body {
    padding: 8px 14px 12px;
    transition: var(--transition);
}

.panel-body.collapsed {
    display: none;
}

/* --- Info Rows --- */
.info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 4px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.info-label {
    font-size: 10px;
    letter-spacing: 1px;
    color: var(--text-secondary);
}

.info-value {
    font-size: 11px;
    color: var(--text-primary);
    text-align: right;
    max-width: 140px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* --- Control Rows --- */
.control-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 5px 0;
    gap: 8px;
}

.control-row label:not(.toggle-switch) {
    font-size: 10px;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    white-space: nowrap;
    min-width: 76px;
    flex-shrink: 0;
}

.range-value {
    font-size: 10px;
    color: var(--text-primary);
    min-width: 32px;
    text-align: right;
    flex-shrink: 0;
}

/* --- Sub-sections --- */
.sub-section {
    padding: 6px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    margin-bottom: 4px;
}

.sub-section:last-child {
    border-bottom: none;
}

.sub-header {
    font-family: var(--font-ui);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--text-secondary);
    margin-bottom: 4px;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--border-dim);
}

/* ============================================================
   INPUTS
   ============================================================ */

/* --- Range Slider --- */
.hud-range {
    -webkit-appearance: none;
    appearance: none;
    flex: 1;
    height: 3px;
    background: var(--border);
    outline: none;
    border-radius: 0;
}

.hud-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 10px;
    height: 14px;
    background: var(--accent);
    border: none;
    cursor: pointer;
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}

.hud-range::-moz-range-thumb {
    width: 10px;
    height: 14px;
    background: var(--accent);
    border: none;
    cursor: pointer;
}

.hud-range:disabled {
    opacity: 0.3;
}

/* --- Camera Parameter Sliders --- */
.cam-param-row {
    padding: 5px 0;
}

.cam-param-row > label {
    font-size: 10px;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    white-space: nowrap;
    display: block;
    margin-bottom: 4px;
}

.slider-group {
    display: flex;
    flex-direction: column;
    gap: 2px;
    width: 100%;
}

.slider-group .hud-range {
    width: 100%;
    flex: none;
}

.slider-value {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-primary);
    text-align: center;
    user-select: none;
}

.far-max-row {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 4px;
}

.far-max-row label {
    font-size: 9px;
    letter-spacing: 0.5px;
    color: var(--text-dim);
    white-space: nowrap;
}

.far-max-row .hud-number {
    width: 64px;
    font-size: 10px;
}

/* --- Color Picker --- */
.hud-color {
    -webkit-appearance: none;
    appearance: none;
    width: 28px;
    height: 20px;
    border: 1px solid var(--border);
    background: transparent;
    padding: 0;
    cursor: pointer;
}

.hud-color::-webkit-color-swatch-wrapper {
    padding: 1px;
}

.hud-color::-webkit-color-swatch {
    border: none;
}

/* --- Select --- */
.hud-select {
    background: var(--bg-input);
    border: 1px solid var(--border);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 10px;
    padding: 4px 8px;
    outline: none;
    cursor: pointer;
    max-width: 180px;
}

.hud-select:focus {
    border-color: var(--accent);
}

.hud-select:disabled {
    opacity: 0.3;
}

/* --- Toggle Switch --- */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 36px !important;
    min-width: 36px !important;
    max-width: 36px !important;
    height: 18px;
    cursor: pointer;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    inset: 0;
    background: var(--bg-input);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    height: 12px;
    width: 12px;
    left: 2px;
    bottom: 2px;
    background: var(--text-dim);
    transition: var(--transition);
}

.toggle-switch input:checked+.toggle-slider {
    border-color: var(--accent);
    background: var(--accent-glow);
}

.toggle-switch input:checked+.toggle-slider::before {
    transform: translateX(20px);
    background: var(--accent);
}

/* ============================================================
   VIEWPORT AREA
   ============================================================ */
#viewport-area {
    flex: 1;
    position: relative;
    overflow: hidden;
    background: var(--bg-primary);
    min-height: 0;
}

.viewport-container {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.viewport-container canvas {
    width: 100% !important;
    height: 100% !important;
    display: block;
}

.viewport-label {
    position: absolute;
    top: 8px;
    left: 12px;
    font-family: var(--font-ui);
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 3px;
    color: var(--text-dim);
    pointer-events: none;
    z-index: 10;
}

/* --- Dropzone --- */
.viewport-dropzone {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 5;
    transition: var(--transition);
    pointer-events: none;
}

.viewport-dropzone.hidden {
    display: none;
}

.viewport-dropzone.drag-over {
    background: var(--accent-glow);
    border: 1px solid var(--accent);
    pointer-events: auto;
}

.dropzone-content {
    text-align: center;
    pointer-events: none;
}

.dropzone-icon {
    font-size: 36px;
    color: var(--text-dim);
    margin-bottom: 12px;
}

.dropzone-text {
    font-family: var(--font-ui);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 4px;
    color: var(--text-dim);
    margin-bottom: 8px;
}

.dropzone-formats {
    font-size: 10px;
    color: var(--text-dim);
    letter-spacing: 2px;
    opacity: 0.5;
}

/* --- URL Input in Dropzone --- */
.dropzone-url-input {
    margin-top: 24px;
    pointer-events: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.dropzone-or {
    font-family: var(--font-ui);
    font-size: 10px;
    letter-spacing: 3px;
    color: var(--text-dim);
    opacity: 0.5;
}

.url-input-row {
    display: flex;
    align-items: center;
    gap: 6px;
    max-width: 460px;
    width: 100%;
}

.hud-url-input {
    flex: 1;
    background: var(--bg-input);
    border: 1px solid var(--border);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 11px;
    padding: 8px 12px;
    outline: none;
    transition: var(--transition);
    min-width: 0;
}

.hud-url-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent-glow);
}

.hud-url-input::placeholder {
    color: var(--text-dim);
    opacity: 0.5;
}

.url-load-btn {
    flex-shrink: 0;
    padding: 7px 16px;
    font-size: 11px;
}

/* ============================================================
   COMPARISON GRID
   ============================================================ */
.comparison-grid {
    position: absolute;
    inset: 0;
    display: grid;
    gap: 2px;
    background: var(--border);
    grid-template-columns: 1fr;
    grid-template-rows: 1fr;
    overflow: hidden;
}

/* Dynamic grid layouts based on visible slot count */
.comparison-grid[data-visible-slots="2"] {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr;
}

.comparison-grid[data-visible-slots="3"] {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
}

.comparison-grid[data-visible-slots="3"] .comparison-slot:nth-child(3) {
    grid-column: 1 / -1;
}

.comparison-grid[data-visible-slots="4"] {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
}

.comparison-slot {
    position: relative;
    overflow: hidden;
    background: var(--bg-primary);
    min-height: 0;
    min-width: 0;
}

.comparison-slot.slot-hidden {
    display: none;
}

.comparison-slot canvas {
    position: absolute;
    inset: 0;
    width: 100% !important;
    height: 100% !important;
    display: block;
}

.comparison-slot .viewport-label {
    background: rgba(8, 8, 8, 0.7);
    padding: 2px 8px;
}

.slot-dropzone {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 5;
    pointer-events: none;
}

.slot-dropzone.hidden {
    display: none;
}

.slot-dropzone.drag-over {
    background: var(--accent-glow);
    border: 1px solid var(--accent);
    pointer-events: auto;
}

.slot-clear-btn {
    position: absolute;
    top: 6px;
    right: 8px;
    width: 22px;
    height: 22px;
    background: rgba(8, 8, 8, 0.7);
    border: 1px solid var(--border);
    color: var(--text-dim);
    font-size: 11px;
    cursor: pointer;
    z-index: 10;
    display: none;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.slot-clear-btn.visible {
    display: flex;
}

.slot-clear-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* ============================================================
   LOADING OVERLAY
   ============================================================ */
#loading-overlay {
    position: absolute;
    inset: 0;
    background: rgba(8, 8, 8, 0.85);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 200;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 2px solid var(--border);
    border-top: 2px solid var(--accent);
    animation: spin 1s linear infinite;
    margin-bottom: 16px;
}

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

.loading-text {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 4px;
    color: var(--accent);
}

/* ============================================================
   BOTTOM BAR — Animation Controls
   ============================================================ */
#bottom-bar {
    height: var(--bottom-bar-height);
    background: var(--bg-panel);
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 16px;
    position: relative;
    z-index: 100;
}

#bottom-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-dim), var(--accent), var(--accent-dim), transparent);
}

.animation-controls {
    display: flex;
    align-items: center;
    width: 100%;
    gap: 16px;
}

.anim-left {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
}

.anim-divider {
    display: inline-block;
    width: 1px;
    height: 20px;
    background: var(--border);
    margin: 0 6px;
}

.anim-center {
    display: flex;
    align-items: center;
    flex: 1;
    gap: 10px;
}

.anim-time {
    font-size: 10px;
    color: var(--text-dim);
    min-width: 50px;
    text-align: center;
}

.timeline {
    flex: 1;
}

.anim-right {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.speed-label {
    font-size: 10px;
    letter-spacing: 1px;
    color: var(--text-dim);
}

.speed-range {
    width: 80px;
    flex: none;
}

/* ============================================================
   MATERIAL PANEL EXTRAS
   ============================================================ */
.material-list {
    max-height: 200px;
    overflow-y: auto;
}

.material-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 8px;
    border: 1px solid var(--border);
    margin-bottom: 4px;
    cursor: pointer;
    transition: var(--transition);
}

.material-item:hover {
    border-color: var(--accent-dim);
    background: var(--bg-hover);
}

.material-swatch {
    width: 16px;
    height: 16px;
    border: 1px solid var(--border);
    flex-shrink: 0;
}

.material-item-name {
    font-size: 10px;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.material-editor-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border-dim);
}

#material-name {
    font-size: 11px;
    color: var(--accent);
    letter-spacing: 1px;
}

.texture-uploads {
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--border-dim);
}

.tex-upload-btn {
    cursor: pointer;
}

.tex-clear-btn {
    width: 22px;
    height: 22px;
    font-size: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.empty-state {
    text-align: center;
    padding: 16px;
    color: var(--text-dim);
    font-size: 10px;
    letter-spacing: 2px;
}

/* ============================================================
   TOAST NOTIFICATIONS
   ============================================================ */
#toast-container {
    position: fixed;
    top: 60px;
    right: 16px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    padding: 10px 16px;
    background: var(--bg-panel-solid);
    border: 1px solid var(--border);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 1px;
    min-width: 240px;
    animation: toast-in 0.3s ease;
    position: relative;
    overflow: hidden;
}

.toast::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
}

.toast.info::before {
    background: var(--accent);
}

.toast.success::before {
    background: #2ecc71;
}

.toast.warning::before {
    background: #f39c12;
}

.toast.error::before {
    background: #e74c3c;
}

.toast-exit {
    animation: toast-out 0.3s ease forwards;
}

@keyframes toast-in {
    from {
        transform: translateX(100%);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes toast-out {
    from {
        transform: translateX(0);
        opacity: 1;
    }

    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

/* ============================================================
   HISTORY PANEL
   ============================================================ */
#history-list {
    max-height: 300px;
    overflow-y: auto;
    overflow-x: hidden;
}

.history-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 4px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    cursor: pointer;
    transition: var(--transition);
    gap: 6px;
}

.history-item:hover {
    background: var(--bg-hover);
    border-color: var(--accent-dim);
}

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

.history-item-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    overflow: hidden;
    flex: 1;
    min-width: 0;
}

.history-item-name {
    font-size: 10px;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    letter-spacing: 0.5px;
}

.history-item-meta {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 9px;
    color: var(--text-dim);
    letter-spacing: 0.5px;
}

.history-badge {
    font-size: 8px;
    padding: 1px 4px;
}

.history-item-delete {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-dim);
    font-size: 9px;
    cursor: pointer;
    transition: var(--transition);
    opacity: 0;
}

.history-item:hover .history-item-delete {
    opacity: 1;
}

.history-item-delete:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.history-clear-btn {
    margin-top: 8px;
    font-size: 9px;
}

/* ============================================================
   SIDEBAR TOGGLE BUTTONS (hidden on desktop, shown on mobile)
   ============================================================ */
.sidebar-toggle {
    display: none !important;
}

/* ============================================================
   SIDEBAR BACKDROP OVERLAY
   ============================================================ */
#sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 150;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

#sidebar-backdrop.visible {
    display: block;
    opacity: 1;
    pointer-events: auto;
}

/* ============================================================
   RESPONSIVE — Tablet & Below (≤ 1024px)
   ============================================================ */
@media (max-width: 1024px) {

    /* Remove zoom on smaller screens — it breaks viewport calculations */
    html {
        zoom: 1;
    }

    /* Show sidebar toggle buttons */
    .sidebar-toggle {
        display: inline-flex !important;
        border-color: var(--accent-dim);
        color: var(--text-primary);
    }

    /* Sidebars become slide-out overlays */
    .sidebar {
        position: fixed;
        top: var(--top-bar-height);
        bottom: var(--bottom-bar-height);
        width: var(--panel-width);
        z-index: 200;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

    #sidebar-left {
        left: 0;
    }

    #sidebar-left.open {
        transform: translateX(0);
    }

    #sidebar-right {
        right: 0;
        left: auto;
        transform: translateX(100%);
    }

    #sidebar-right.open {
        transform: translateX(0);
    }

    /* Let viewport fill the full width */
    #viewport-area {
        flex: 1;
    }
}

/* ============================================================
   RESPONSIVE — Tablet Portrait & Mobile (≤ 768px)
   ============================================================ */
@media (max-width: 768px) {

    /* Hide format badges */
    .format-badges {
        display: none;
    }

    /* Compact top bar */
    #top-bar {
        padding: 0 8px;
        gap: 4px;
    }

    .top-bar-center {
        gap: 8px;
    }

    .top-bar-left {
        gap: 8px;
    }

    .top-bar-right {
        gap: 4px;
    }

    .top-bar-divider {
        display: none;
    }

    /* Simplify COMPARE button — icon only */
    #btn-comparison-toggle span:not(.btn-icon) {
        display: none;
    }

    /* Upload button — compact */
    .upload-btn span:not(.upload-icon) {
        display: none;
    }

    .upload-btn {
        padding: 6px 10px;
    }

    /* Comparison grid stacks vertically on smaller screens */
    .comparison-grid[data-visible-slots="2"],
    .comparison-grid[data-visible-slots="3"],
    .comparison-grid[data-visible-slots="4"] {
        grid-template-columns: 1fr;
    }

    .comparison-grid[data-visible-slots="3"] .comparison-slot:nth-child(3) {
        grid-column: auto;
    }

    /* Bottom bar — compact */
    #bottom-bar {
        padding: 0 8px;
    }

    .animation-controls {
        gap: 8px;
    }

    .anim-divider {
        display: none;
    }

    .speed-label {
        display: none;
    }

    .speed-range {
        width: 50px;
    }

    .anim-time {
        min-width: 36px;
        font-size: 9px;
    }

    /* Sidebar narrower on small tablets */
    .sidebar {
        width: 260px;
    }

    /* Dropzone text smaller */
    .dropzone .dropzone-text {
        font-size: 12px;
    }

    .dropzone .dropzone-formats {
        font-size: 8px;
    }

    /* Touch-friendly: larger slider thumbs */
    .hud-range::-webkit-slider-thumb {
        width: 14px;
        height: 18px;
    }

    .hud-range::-moz-range-thumb {
        width: 14px;
        height: 18px;
    }

    /* Touch-friendly: larger toggle switches */
    .hud-btn-icon {
        width: 36px;
        height: 36px;
    }

    /* Toast narrower */
    .toast {
        min-width: 180px;
        font-size: 10px;
    }
}

/* ============================================================
   RESPONSIVE — Mobile (≤ 480px)
   ============================================================ */
@media (max-width: 480px) {

    /* Hide tagline label */
    .top-bar-label {
        display: none;
    }

    /* Even more compact logo */
    .logo {
        font-size: 14px;
        letter-spacing: 2px;
    }

    /* Sidebar takes full width minus some margin */
    .sidebar {
        width: calc(100vw - 48px);
    }

    /* Comparison grid: always single column, auto rows */
    .comparison-grid[data-visible-slots="2"],
    .comparison-grid[data-visible-slots="3"],
    .comparison-grid[data-visible-slots="4"] {
        grid-template-rows: repeat(auto-fit, 1fr);
    }

    /* Bottom bar even more compact */
    .anim-right {
        gap: 4px;
    }

    /* Buttons even more snug */
    .hud-btn {
        padding: 4px 8px;
        font-size: 10px;
    }
}

/* ============================================================
   BACKGROUND GRID OVERLAY
   ============================================================ */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background-image:
        linear-gradient(rgba(230, 57, 70, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(230, 57, 70, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
}

/* ============================================================
   SCANLINE EFFECT (subtle)
   ============================================================ */
body::after {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9998;
    background: repeating-linear-gradient(0deg,
            transparent,
            transparent 2px,
            rgba(0, 0, 0, 0.02) 2px,
            rgba(0, 0, 0, 0.02) 4px);
}

/* ============================================================
   ACTIVE SLOT HIGHLIGHT (Comparison Mode)
   ============================================================ */
.comparison-slot.active-slot {
    outline: 1px solid var(--accent);
    outline-offset: -1px;
    box-shadow: inset 0 0 12px var(--accent-glow);
}

/* ============================================================
   HELP OVERLAY
   ============================================================ */

/* Floating help button — bottom-right */
.help-fab {
    position: fixed;
    bottom: 60px;
    right: 16px;
    z-index: 150;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-panel-solid);
    border: 1px solid var(--border);
    color: var(--text-dim);
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    opacity: 0.6;
}

.help-fab:hover {
    border-color: var(--accent);
    color: var(--accent);
    opacity: 1;
    box-shadow: 0 0 10px var(--accent-glow);
}

/* Full-screen overlay */
.help-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.help-overlay.visible {
    opacity: 1;
}

.help-content {
    background: var(--bg-panel-solid);
    border: 1px solid var(--border);
    max-width: 460px;
    width: 88%;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
}

.help-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    pointer-events: none;
}

.help-content::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-dim), transparent);
    pointer-events: none;
}

.help-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px 10px;
    border-bottom: 1px solid var(--border);
}

.help-title {
    font-family: var(--font-ui);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 3px;
    color: var(--accent);
}

.help-close-btn {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-dim);
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 12px;
    transition: var(--transition);
    position: relative;
    z-index: 10;
}

.help-close-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 8px var(--accent-glow);
}

.help-section {
    padding: 8px 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.help-section:last-of-type {
    border-bottom: none;
}

.help-section-title {
    font-family: var(--font-ui);
    font-size: 9px;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--text-secondary);
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.help-modifier {
    font-family: var(--font-mono);
    font-size: 8px;
    font-weight: 400;
    letter-spacing: 1px;
    color: var(--accent);
    padding: 1px 5px;
    border: 1px solid var(--accent-dim);
    background: var(--accent-glow);
}

.help-grid {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.help-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 3px 0;
}

.help-keys {
    display: flex;
    align-items: center;
    gap: 3px;
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-secondary);
}

.help-action {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-primary);
    text-align: right;
}

kbd {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 5px;
    font-family: var(--font-mono);
    font-size: 9px;
    color: var(--text-highlight);
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-bottom-width: 2px;
    box-shadow: 0 0 3px var(--accent-glow);
    line-height: 1;
}

.help-note {
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 0.5px;
    color: var(--accent);
    font-style: italic;
}

.help-footer {
    padding: 10px 16px;
    text-align: center;
    font-family: var(--font-mono);
    font-size: 9px;
    color: var(--text-dim);
    letter-spacing: 0.5px;
    border-top: 1px solid rgba(255, 255, 255, 0.04);
}

.help-footer kbd {
    font-size: 8px;
    min-width: 16px;
    height: 16px;
    padding: 0 3px;
}

/* Light theme overrides for help */
[data-theme="light"] .help-overlay {
    background: rgba(200, 200, 200, 0.6);
}

[data-theme="light"] .help-section {
    border-bottom-color: rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .help-footer {
    border-top-color: rgba(0, 0, 0, 0.06);
}

/* ============================================================
   MEASUREMENT SYSTEM
   ============================================================ */

/* --- Number Input --- */
.hud-number {
    background: var(--bg-input);
    border: 1px solid var(--border);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 10px;
    padding: 4px 6px;
    outline: none;
    width: 52px;
    flex-shrink: 0;
}

.hud-number:focus {
    border-color: var(--accent);
}

/* --- CSS2D Label Overlay --- */
.css2d-overlay,
.css2d-overlay * {
    pointer-events: none !important;
}

.css2d-overlay {
    position: absolute;
    top: 0;
    left: 0;
    overflow: hidden;
}

.measure-label-2d {
    background: rgba(10, 10, 10, 0.85);
    border: 1px solid var(--accent);
    color: var(--accent-bright);
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.5px;
    padding: 2px 8px;
    white-space: nowrap;
    pointer-events: none;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    box-shadow: 0 0 8px var(--accent-glow);
}

.measure-label-2d.bbox-label {
    background: rgba(10, 10, 10, 0.75);
    border-style: dashed;
    font-size: 9px;
    box-shadow: none;
}

[data-theme="light"] .measure-label-2d {
    background: rgba(240, 240, 240, 0.9);
    color: var(--accent);
}

[data-theme="light"] .measure-label-2d.bbox-label {
    background: rgba(240, 240, 240, 0.8);
}

/* --- Measurement List --- */
.measurement-list {
    max-height: 200px;
    overflow-y: auto;
}

.measurement-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 4px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

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

.measurement-info {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
}

.measurement-number {
    font-size: 9px;
    color: var(--accent);
    font-weight: 600;
    flex-shrink: 0;
}

.measurement-distance {
    font-size: 10px;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.measurement-delete {
    flex-shrink: 0;
    padding: 2px 6px !important;
    font-size: 9px !important;
}

/* --- Bounding Box Dimensions --- */
.bbox-dimensions {
    margin-top: 4px;
}

.bbox-dimensions .info-row {
    padding: 2px 0;
}

/* ============================================================
   CAMERA ACTORS
   ============================================================ */

/* --- Camera List --- */
.camera-list {
    max-height: 240px;
    overflow-y: auto;
}

.camera-item {
    padding: 6px 8px;
    border: 1px solid var(--border);
    margin-bottom: 4px;
    transition: var(--transition);
    cursor: pointer;
}

.camera-item:hover {
    border-color: var(--accent-dim);
    background: var(--bg-hover);
}

.camera-item.selected {
    border-color: var(--accent);
    background: var(--accent-glow);
}

.camera-item-header {
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.camera-item.disabled {
    opacity: 0.4;
}

.camera-item.disabled .camera-name {
    text-decoration: line-through;
}

.cam-toggle-btn {
    font-size: 10px !important;
    padding: 1px 4px !important;
    min-width: 20px;
}

.cam-toggle-btn.toggled-off {
    border-color: var(--text-dim);
    color: var(--text-dim);
}

.camera-name {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.5px;
    color: var(--text-primary);
    cursor: text;
    outline: none;
    display: inline-block;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.camera-name[contenteditable="true"] {
    border-bottom: 1px solid var(--accent);
    padding-bottom: 1px;
}

.camera-item-actions {
    display: flex;
    gap: 3px;
    flex-wrap: wrap;
}

.cam-action-btn {
    font-size: 11px !important;
    padding: 2px 5px !important;
    min-width: 24px;
    justify-content: center;
}

.cam-action-btn.recording {
    border-color: #ff4444;
    color: #ff4444;
    background: rgba(255, 68, 68, 0.15);
    animation: record-pulse 1s ease-in-out infinite;
}

.cam-action-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.cam-delete-btn:hover {
    border-color: #ff4444 !important;
    color: #ff4444 !important;
}

/* --- PiP Preview --- */
.pip-preview {
    position: absolute;
    bottom: 16px;
    right: 16px;
    z-index: 25;
    border: 1px solid var(--accent);
    background: var(--bg-panel);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5), 0 0 12px var(--accent-glow);
}

.pip-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 3px 8px;
    background: var(--accent-glow);
    border-bottom: 1px solid var(--accent-dim);
}

.pip-label {
    font-family: var(--font-ui);
    font-size: 9px;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--accent);
}

.pip-close-btn {
    background: none;
    border: none;
    color: var(--text-dim);
    font-size: 11px;
    cursor: pointer;
    padding: 0 4px;
    transition: var(--transition);
}

.pip-close-btn:hover {
    color: var(--accent);
}

#pip-preview-canvas {
    display: block;
    width: 320px;
    height: 200px;
}

/* --- Recording Indicator --- */
.record-indicator {
    position: absolute;
    top: 28px;
    left: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 2px 8px;
    background: rgba(0, 0, 0, 0.7);
    border-radius: 2px;
    z-index: 26;
}

.record-dot {
    width: 8px;
    height: 8px;
    background: #ff4444;
    border-radius: 50%;
    animation: record-pulse 1s ease-in-out infinite;
}

.record-time {
    font-family: var(--font-mono);
    font-size: 10px;
    color: #ff4444;
    letter-spacing: 1px;
}

@keyframes record-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* --- Capture Flash --- */
.capture-flash {
    position: absolute;
    inset: 0;
    background: white;
    opacity: 0;
    pointer-events: none;
    z-index: 30;
    transition: opacity 0.05s ease-in;
}

.capture-flash.active {
    opacity: 0.6;
    transition: opacity 0.05s ease-in;
    animation: flash-fade 0.35s ease-out forwards;
}

@keyframes flash-fade {
    0% { opacity: 0.6; }
    100% { opacity: 0; }
}

/* --- Light theme overrides for cameras --- */
[data-theme="light"] .pip-preview {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15), 0 0 12px var(--accent-glow);
}

[data-theme="light"] .record-indicator {
    background: rgba(255, 255, 255, 0.85);
}

/* ═══════════════════════════════════════════
   RENDER MODE TOOLBAR (floating in viewport)
   ═══════════════════════════════════════════ */

.render-mode-bar {
    position: absolute;
    top: 36px;
    left: 12px;
    display: flex;
    gap: 2px;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 3px;
    z-index: 20;
    pointer-events: auto;
}

.render-mode-btn {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-dim);
    font-family: var(--font-mono);
    font-size: 9px;
    font-weight: 600;
    letter-spacing: 0.05em;
    padding: 4px 8px;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.15s ease;
    white-space: nowrap;
}

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

.render-mode-btn.active {
    color: var(--accent);
    background: rgba(230, 57, 70, 0.12);
    border-color: var(--accent);
    text-shadow: 0 0 6px var(--accent-glow);
}

/* Light theme */
[data-theme="light"] .render-mode-bar {
    background: rgba(255, 255, 255, 0.75);
}

[data-theme="light"] .render-mode-btn.active {
    background: rgba(230, 57, 70, 0.1);
}

/* ═══════════════════════════════════════════
   TRANSFORM (Rotate) SECTION
   ═══════════════════════════════════════════ */

.transform-section {
    margin-top: 6px;
    border-top: 1px solid var(--border);
    padding-top: 6px;
}

.rotate-axis-btn {
    position: relative;
    cursor: pointer;
}

.rotate-axis-btn:hover {
    color: var(--accent) !important;
    border-color: var(--accent) !important;
    background: rgba(230, 57, 70, 0.08);
}

.rotate-axis-btn:active {
    transform: scale(0.92);
    background: rgba(230, 57, 70, 0.2);
}

/* ═══════════════════════════════════════════
   CLIPPING PANEL
   ═══════════════════════════════════════════ */

.axis-btn-group {
    display: flex;
    gap: 4px;
}

.clip-axis-btn {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    color: var(--text-dim);
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 700;
    width: 28px;
    height: 24px;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.15s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.clip-axis-btn:hover:not(:disabled) {
    color: var(--text);
    border-color: var(--text-dim);
}

.clip-axis-btn.active {
    color: var(--accent);
    border-color: var(--accent);
    background: rgba(230, 57, 70, 0.12);
    text-shadow: 0 0 6px var(--accent-glow);
}

.clip-axis-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.clip-pos-row {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
}

.clip-pos-row label {
    margin-bottom: 0;
}

.clip-pos-row .range-value {
    text-align: center;
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-dim);
}

/* ═══════════════════════════════════════════
   EXPORT PANEL
   ═══════════════════════════════════════════ */

.export-info {
    font-family: var(--font-mono);
    font-size: 9px;
    color: var(--text-dim);
    padding: 6px 0;
    line-height: 1.5;
    letter-spacing: 0.02em;
}

.export-status {
    font-family: var(--font-mono);
    font-size: 9px;
    color: var(--accent);
    padding: 4px 0 0;
    min-height: 16px;
    letter-spacing: 0.02em;
}

.hud-btn.full-width {
    width: 100%;
    justify-content: center;
}

.hud-btn.full-width:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ═══════════════════════════════════════════
   RESPONSIVE: Render mode toolbar
   ═══════════════════════════════════════════ */

@media (max-width: 768px) {
    .render-mode-bar {
        top: 32px;
        left: 8px;
        gap: 1px;
        padding: 2px;
    }

    .render-mode-btn {
        font-size: 8px;
        padding: 3px 5px;
    }
}

@media (max-width: 480px) {
    .render-mode-bar {
        top: auto;
        bottom: 8px;
        left: 50%;
        transform: translateX(-50%);
    }
}