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

body {
    /* Theme variables */
    --bg-gradient-start: #1e1e2e;
    --bg-gradient-end: #2d2d44;
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --text-heading: #ffffff;
    --panel-bg: rgba(255, 255, 255, 0.05);
    --panel-border: rgba(255, 255, 255, 0.1);
    --control-bg: rgba(255, 255, 255, 0.1);
    --control-hover-bg: rgba(255, 255, 255, 0.15);
    --control-border: rgba(255, 255, 255, 0.2);
    --control-border-hover: rgba(255, 255, 255, 0.3);
    --accent-color: #4a9eff;
    --accent-color-dim: rgba(74, 158, 255, 0.3);
    --canvas-bg: rgba(0, 0, 0, 0.2);
    --info-panel-bg: rgba(0, 0, 0, 0.2);
    --shadow-color: rgba(0, 0, 0, 0.5);
    --credits-bg: rgba(255, 255, 255, 0.03);
    --credits-hover-bg: rgba(255, 255, 255, 0.05);
    --segmented-bg: rgba(255, 255, 255, 0.05);
    --segmented-label: rgba(255, 255, 255, 0.7);
    --segmented-label-hover: rgba(255, 255, 255, 0.9);
    --segmented-separator: rgba(255, 255, 255, 0.1);
    --success-color: #00c853;
    --warn-color: #ff9800;
    --danger-color: #f44336;
    --danger-bg: rgba(244, 67, 54, 0.2);

    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    color: var(--text-primary);
    padding: 15px;
    min-height: 100vh;
    height: 100vh;
    overflow: hidden;
    transition: background 0.3s ease, color 0.3s ease;
}

body.light-theme {
    --bg-gradient-start: #e8eef7;
    --bg-gradient-end: #c9d6e8;
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --text-heading: #1a202c;
    --panel-bg: rgba(255, 255, 255, 0.8);
    --panel-border: rgba(0, 0, 0, 0.1);
    --control-bg: rgba(255, 255, 255, 0.9);
    --control-hover-bg: rgba(240, 244, 248, 1);
    --control-border: rgba(0, 0, 0, 0.15);
    --control-border-hover: rgba(0, 0, 0, 0.25);
    --accent-color: #2563eb;
    --accent-color-dim: rgba(37, 99, 235, 0.2);
    --canvas-bg: rgba(255, 255, 255, 0.5);
    --info-panel-bg: rgba(0, 0, 0, 0.03);
    --shadow-color: rgba(0, 0, 0, 0.15);
    --credits-bg: rgba(0, 0, 0, 0.03);
    --credits-hover-bg: rgba(0, 0, 0, 0.05);
    --segmented-bg: rgba(0, 0, 0, 0.03);
    --segmented-label: rgba(0, 0, 0, 0.6);
    --segmented-label-hover: rgba(0, 0, 0, 0.8);
    --segmented-separator: rgba(0, 0, 0, 0.15);
    --success-color: #008000;
    --warn-color: #e65100;
    --danger-color: #c62828;
    --danger-bg: rgba(198, 40, 40, 0.15);
}

.container {
    max-width: 1750px;
    margin: 0 auto;
    height: calc(100vh - 30px);
    display: flex;
    flex-direction: column;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    flex-shrink: 0;
    gap: 15px;
}

.header-center {
    flex: 1;
    text-align: center;
}

.credits {
    width: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2em;
    font-weight: bold;
    text-shadow: 2px 2px 4px var(--shadow-color);
}

.credits-logo-wrap {
    position: relative;
    width: 59px;
    height: 59px;
    margin-right: 20px;
    flex-shrink: 0;
}

.credits-logo-wrap img {
    position: absolute;
    left: 0;
    top: 0;
    width: 59px;
    height: 59px;
    margin: 0;
    transition: opacity 0.2s ease;
}

.credits-logo-wrap .credits-logo-yt {
    opacity: 0;
}

.credits-link:hover .credits-logo-wrap .credits-logo-default {
    opacity: 0;
}

.credits-link:hover .credits-logo-wrap .credits-logo-yt {
    opacity: 1;
}

.credits-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

.credits-link:hover {
    color: #ff0000;
}

.feedback {
    width: 300px;
    display: flex;
    justify-content: space-evenly;
    font-size: 0.8em;
    color: var(--text-secondary);
}

.feedback img {
    vertical-align: middle;
    width: 19px;
    height: 19px;
}

.feedback a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.feedback a:hover {
    color: var(--text-primary);
    text-decoration: underline;
}

header h1 {
    color: var(--text-heading);
    font-size: 2em;
    margin-bottom: 5px;
    text-shadow: 2px 2px 4px var(--shadow-color);
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.95em;
}

/* Menu toggle (hidden by default, shown on smaller screens) */
.menu-toggle {
    display: none;
    position: fixed;
    top: 15px;
    left: 15px;
    z-index: 1002;
    width: 36px;
    height: 36px;
    border-radius: 6px;
    border: 1px solid var(--control-border);
    background: var(--control-bg);
    color: var(--text-heading);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.menu-toggle:hover {
    background: var(--control-hover-bg);
    border-color: var(--control-border-hover);
}

.menu-toggle svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.drawer-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 999;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.drawer-overlay.active {
    display: block;
    opacity: 1;
    z-index: 1003;
}

.drawer-close {
    display: none;
    position: absolute;
    top: 10px;
    right: 10px;
    width: 36px;
    height: 36px;
    border-radius: 6px;
    border: 1px solid var(--control-border);
    background: var(--control-bg);
    color: var(--text-heading);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 10;
}

.drawer-close:hover {
    background: var(--control-hover-bg);
    border-color: var(--control-border-hover);
}

.drawer-close svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

/* Main content: left sidebar | middle | right sidebar */
.main-content {
    display: grid;
    grid-template-columns: 300px 1fr 300px;
    gap: 15px;
    align-items: stretch;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

/* Left sidebar (controls) */
.controls {
    background: var(--panel-bg);
    padding: 20px;
    border-radius: 10px;
    backdrop-filter: blur(10px);
    border: 1px solid var(--panel-border);
    overflow-y: auto;
    max-height: 100%;
    position: relative;
}

.control-group {
    display: flex;
    flex-direction: column;
    margin-bottom: 30px;
}

.control-group:last-child {
    margin-bottom: 0;
}

.control-hint {
    margin: 8px 0 0 0;
    font-size: 0.8em;
    line-height: 1.35;
    color: var(--text-secondary);
}

.control-section-title {
    color: var(--accent-color);
    margin-bottom: 10px;
    font-size: 1em;
    border-bottom: 2px solid var(--accent-color-dim);
    padding-bottom: 6px;
    font-weight: 600;
}

.sidebar-placeholder {
    font-size: 0.9em;
    color: var(--text-secondary);
    margin-bottom: 12px;
    line-height: 1.4;
}

/* Sidebar navigation / links */
.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 12px;
}

.sidebar-nav a {
    color: var(--accent-color);
    text-decoration: none;
    font-size: 0.95em;
    transition: color 0.2s ease;
}

.sidebar-nav a:hover {
    color: var(--text-primary);
    text-decoration: underline;
}

.sidebar-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.sidebar-buttons .btn {
    width: 100%;
    padding: 12px 16px;
    flex: none;
}

.checkbox-container {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
}

.checkbox-container input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--accent-color);
}

.checkbox-container label {
    margin: 0;
    cursor: pointer;
    font-size: 0.95em;
    user-select: none;
}

/* Segmented control (radio group styled as buttons) */
.segmented-control {
    display: flex;
    border-radius: 5px;
    overflow: hidden;
    border: 1px solid var(--control-border);
    background: var(--segmented-bg);
    width: 100%;
}

.segmented-control input[type="radio"] {
    display: none;
}

.segmented-control label {
    padding: 7px 0;
    font-size: 0.95em;
    font-weight: normal;
    color: var(--segmented-label);
    background: var(--segmented-bg);
    cursor: pointer;
    transition: all 0.3s ease;
    border-right: 1px solid var(--segmented-separator);
    margin: 0;
    user-select: none;
    flex: 1;
    text-align: center;
}

.segmented-control label:last-child {
    border-right: none;
}

.segmented-control label:hover {
    background: var(--control-hover-bg);
    color: var(--segmented-label-hover);
}

.segmented-control input[type="radio"]:disabled + label {
    opacity: 0.55;
    cursor: not-allowed;
    pointer-events: none;
}

.segmented-control input[type="radio"]:checked + label {
    background: var(--accent-color-dim);
    color: var(--text-heading);
    font-weight: 600;
}

/* Middle panel */
.viewer-panel {
    background: var(--panel-bg);
    padding: 0;
    border-radius: 10px;
    backdrop-filter: blur(10px);
    border: 1px solid var(--panel-border);
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 0;
    overflow: hidden;
}

.section-title {
    color: var(--accent-color);
    font-size: 1.05em;
    font-weight: 600;
    border-bottom: 2px solid var(--accent-color-dim);
    padding-bottom: 6px;
    margin-bottom: 12px;
}

.btn-small {
    padding: 6px 12px;
    font-size: 0.85em;
    font-weight: 600;
    border-radius: 4px;
    border: 1px solid var(--control-border);
    background: var(--control-bg);
    color: var(--text-heading);
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.btn-small:hover {
    background: var(--control-hover-bg);
    border-color: var(--control-border-hover);
}

/* --- Interactive image viewer --- */
.viewer-wrapper {
    position: relative;
    flex: 1;
    min-height: 0;
    display: flex;
    overflow: hidden;
    background: var(--canvas-bg);
    border-radius: 10px;
}

.rotate-button {
    position: absolute;
    top: 10px;
    right: 48px;
    width: 36px;
    height: 36px;
    border-radius: 6px;
    border: 1px solid var(--control-border);
    background: rgba(0, 0, 0, 0.65);
    color: var(--text-heading);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 10;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.rotate-button:hover {
    background: rgba(0, 0, 0, 0.8);
    border-color: var(--control-border-hover);
    transform: scale(1.05);
}

.rotate-button svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.mirror-button {
    position: absolute;
    top: 10px;
    right: 92px;
    width: 36px;
    height: 36px;
    border-radius: 6px;
    border: 1px solid var(--control-border);
    background: rgba(0, 0, 0, 0.65);
    color: var(--text-heading);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 10;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.mirror-button:hover {
    background: rgba(0, 0, 0, 0.8);
    border-color: var(--control-border-hover);
    transform: scale(1.05);
}

.mirror-button svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.fullscreen-button {
    position: absolute;
    top: 10px;
    right: 136px;
    width: 36px;
    height: 36px;
    border-radius: 6px;
    border: 1px solid var(--control-border);
    background: rgba(0, 0, 0, 0.65);
    color: var(--text-heading);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 10;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.fullscreen-button:hover {
    background: rgba(0, 0, 0, 0.8);
    border-color: var(--control-border-hover);
    transform: scale(1.05);
}

.fullscreen-button svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.viewer-fullscreen-legend {
    display: none;
    position: absolute;
    top: 56px;
    right: 48px;
    z-index: 10;
    padding: 10px 14px;
    border-radius: 8px;
    background: rgba(0, 0, 0, 0.75);
    color: var(--text-heading);
    font-size: 0.85em;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--control-border);
}

.viewer-fullscreen-legend.visible {
    display: block;
}

.viewer-fullscreen-legend-title {
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--accent-color);
    font-size: 0.95em;
}

.viewer-fullscreen-legend-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.viewer-fullscreen-legend-list li {
    padding: 2px 0;
    display: flex;
    align-items: center;
    gap: 6px;
}

.viewer-fullscreen-legend-list kbd {
    padding: 2px 6px;
    font-size: 0.9em;
    font-family: inherit;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid var(--control-border);
    border-radius: 4px;
}

.viewer-fullscreen-picofly-legend {
    display: none;
    margin-top: 14px;
    padding-top: 10px;
    border-top: 1px solid var(--control-border);
}

.viewer-fullscreen-picofly-legend.visible {
    display: block;
}

.viewer-fullscreen-legend-content {
    font-size: 0.9em;
    line-height: 1.5;
}

.viewer-loading {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    background: var(--canvas-bg);
    color: var(--text-secondary);
}

.viewer-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--panel-border);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: viewer-spin 0.9s linear infinite;
}

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

.viewer-loading-text {
    font-size: 0.95em;
}

.viewer-viewport {
    cursor: crosshair;
    position: relative;
    flex: 1;
    min-width: 0;
    overflow: hidden;
    user-select: none;
}

.viewer-viewport.dragging {
    cursor: grabbing;
}

.viewer-transform {
    position: absolute;
    top: 0;
    left: 0;
    transform-origin: 0 0;
    will-change: transform;
}

.viewer-mirror-wrap {
    position: relative;
    transform-origin: 50% 50%;
    /* width/height set by JS */
}

.viewer-markers {
    position: absolute;
    top: 0;
    left: 0;
    pointer-events: none;
    /* width/height set by JS */
}

.viewer-marker {
    position: absolute;
    width: 48px;
    height: 48px;
    margin-left: -24px;
    margin-top: -24px;
    transform: rotate(45deg) scale(var(--marker-scale, 1));
    transform-origin: 50% 50%;
    pointer-events: none;
}

.viewer-marker-h,
.viewer-marker-v {
    position: absolute;
    background: currentColor;
    box-shadow: 0 0 0 1px rgba(0, 0, 0, 1);
}

.viewer-marker-h {
    left: 0;
    right: 0;
    height: 6px;
    top: 50%;
    margin-top: -3px;
}

.viewer-marker-v {
    top: 0;
    bottom: 0;
    width: 6px;
    left: 50%;
    margin-left: -3px;
}

.viewer-layers {
    position: relative;
    /* width/height set by JS per resolution */
}

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

.viewer-layer img {
    display: block;
    object-fit: none;
    object-position: 0 0;
    /* width/height set by JS per resolution */
}

.viewer-layer img.viewer-layer-overlay-img {
    display: block;
    pointer-events: none;
    min-width: 0;
    min-height: 0;
    object-fit: fill;
    object-position: 0 0;
}

.viewer-layers.picofly-overlays-hidden .viewer-layer-overlay-img {
    display: none;
}

/* Vertical layer slider (right side of viewer) */
.viewer-layer-slider {
    flex-shrink: 0;
    width: 36px;
    padding: 12px 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-left: 1px solid var(--panel-border);
}

.viewer-slider-track {
    position: relative;
    width: 24px;
    flex: 1;
    min-height: 120px;
    min-width: 0;
    background: var(--control-bg);
    border-radius: 4px;
    cursor: ns-resize;
}

.viewer-slider-stops {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    pointer-events: none;
}

.viewer-slider-stop {
    width: 100%;
    height: 2px;
    background: var(--control-border);
    border-radius: 1px;
}

.viewer-slider-input {
    position: absolute;
    left: 0;
    top: 0;
    width: 1px;
    height: 1px;
    opacity: 0;
    pointer-events: none;
    clip: rect(0, 0, 0, 0);
}

.viewer-slider-handle {
    position: absolute;
    left: 50%;
    width: 18px;
    height: 18px;
    margin-left: -9px;
    top: 0;
    transform: translateY(-50%);
    background: var(--accent-color);
    border: 2px solid var(--text-heading);
    border-radius: 50%;
    pointer-events: none;
    box-shadow: 0 2px 6px var(--shadow-color);
    transition: none;
}

.main-placeholder {
    background: var(--canvas-bg);
    border: 1px solid var(--panel-border);
    border-radius: 8px;
    padding: 20px;
    flex: 1;
    overflow: auto;
    font-size: 0.95em;
    line-height: 1.6;
    color: var(--text-secondary);
}

/* Right column: info panel */
.info-panel {
    background: var(--panel-bg);
    padding: 20px;
    border-radius: 10px;
    backdrop-filter: blur(10px);
    border: 1px solid var(--panel-border);
    overflow-y: auto;
    max-height: 100%;
}

.info-section {
    margin-bottom: 30px;
    font-size: 0.9em;
    line-height: 1.5;
}

.info-section:last-child {
    margin-bottom: 0;
}

.info-section h3 {
    color: var(--accent-color);
    margin-bottom: 10px;
    border-bottom: 2px solid var(--accent-color-dim);
    padding-bottom: 6px;
    font-weight: 600;
}

.hint-block {
    font-size: 0.9em;
    line-height: 1.4;
    color: var(--text-secondary);
    margin-bottom: 12px;
    margin-top: 10px;
}
.hint-block p {
    margin: 0 0 8px 0;
}
.hint-block strong {
    display: block;
    color: var(--text-primary);
}
.hint-block ul {
    margin-left: 20px;
}

.hotkey-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.hotkey-list li {
    padding: 4px 0;
    display: flex;
    align-items: baseline;
    gap: 8px;
}

.hotkey-list kbd {
    flex-shrink: 0;
    padding: 2px 8px;
    font-size: 0.85em;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    background: var(--control-bg);
    border: 1px solid var(--control-border);
    border-radius: 4px;
    color: var(--text-heading);
}

.additional-info-content {
    color: var(--text-secondary);
    line-height: 1.6;
}

.additional-info-content a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.3s ease;
    display: inline;
}

.additional-info-content a:hover {
    color: var(--text-primary);
    text-decoration: underline;
}

.additional-info-content a img {
    vertical-align: text-bottom;
    display: inline-block;
}

/* Modals */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-overlay.active {
    display: flex;
    opacity: 1;
}

.modal-content {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 12px;
    padding: 30px;
    max-width: 700px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
    backdrop-filter: blur(11px);
    box-shadow: 0 10px 40px var(--shadow-color);
    transform: scale(0.8);
    transition: transform 0.4s ease;
}

.modal-overlay.active .modal-content {
    transform: scale(1);
}

.modal-content h2 {
    color: var(--text-heading);
    font-size: 1.8em;
    margin-bottom: 20px;
    text-align: center;
}

.modal-content h3 {
    color: var(--text-heading);
    font-size: 1.1em;
    font-weight: 600;
    margin-top: 20px;
    margin-bottom: 6px;
}

.modal-content h3:first-of-type {
    margin-top: 0;
}

.modal-content p {
    color: var(--text-primary);
    line-height: 1.6;
    margin-bottom: 12px;
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 32px;
    height: 32px;
    border-radius: 6px;
    border: 1px solid var(--control-border);
    background: var(--control-bg);
    color: var(--text-heading);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    padding: 0;
}

.modal-close:hover {
    background: var(--control-hover-bg);
    border-color: var(--control-border-hover);
}

.modal-close svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

.image-modal-content {
    max-width: min(95vw, 1200px);
    max-height: 90vh;
    padding: 50px 20px 20px 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-modal-img {
    max-width: 100%;
    max-height: calc(90vh - 70px);
    width: auto;
    height: auto;
    object-fit: contain;
    display: block;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    font-size: 1em;
    font-weight: 600;
    border-radius: 6px;
    border: 1px solid var(--control-border);
    background: var(--control-bg);
    color: var(--text-heading);
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.btn:hover:not(:disabled) {
    background: var(--control-hover-bg);
    border-color: var(--control-border-hover);
}

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

.btn-primary {
    background: var(--accent-color-dim);
    border-color: var(--accent-color);
    color: var(--text-heading);
}

.btn-primary:hover:not(:disabled) {
    background: rgba(74, 158, 255, 0.4);
    border-color: var(--accent-color);
}

.btn-danger {
    background: var(--danger-bg);
    border-color: var(--danger-color);
    color: var(--text-heading);
}

.btn-danger:hover:not(:disabled) {
    background: rgba(244, 67, 54, 0.35);
    border-color: var(--danger-color);
}

.btn-secondary {
    background: var(--accent-color-dim);
    border-color: var(--accent-color);
}

.btn-secondary:hover:not(:disabled) {
    background: rgba(74, 158, 255, 0.4);
}

.btn-warning {
    background: rgba(255, 152, 0, 0.2);
    border-color: var(--warn-color);
}

.btn-warning:hover:not(:disabled) {
    background: rgba(255, 152, 0, 0.35);
}

#my-other-tools img {
    vertical-align: middle;
    width: 16px;
    height: 16px;
}

/* Contributors */
.supporters-button-container {
    display: flex;
    justify-content: center;
}

.supporters-button {
    padding: 10px 24px;
    border-radius: 6px;
    border: 1px solid var(--control-border);
    background: var(--control-bg);
    color: var(--text-heading);
    cursor: pointer;
    font-size: 0.9em;
    font-weight: 600;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.supporters-button:hover {
    background: var(--control-hover-bg);
    border-color: var(--control-border-hover);
}

.supporters-content {
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 0.9em;
}
.supporters-content a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.3s ease;
    display: inline;
}

.supporters-content a:hover {
    color: var(--text-primary);
    text-decoration: underline;
}

.supporters-content a img {
    vertical-align: middle;
    margin-right: 4px;
    display: inline-block;
}


/* Responsive */
@media (max-width: 1400px) {
    .menu-toggle {
        display: flex;
    }

    .drawer-close {
        display: flex;
    }

    body {
        height: auto;
        min-height: 100vh;
        overflow: auto;
    }

    .container {
        height: auto;
        min-height: calc(100vh - 30px);
    }

    .main-content {
        grid-template-columns: 1fr;
        height: auto;
        min-height: 0;
    }

    .viewer-panel {
        height: auto;
        min-height: 300px;
        max-height: calc(100vh - 150px);
        max-height: calc(100dvh - 150px);
        overflow: auto;
    }

    .info-panel {
        display: none;
    }

    .controls {
        position: fixed;
        top: 0;
        left: -320px;
        width: 300px;
        height: 100vh;
        height: 100dvh;
        z-index: 1000;
        transition: left 0.3s ease;
        margin: 0;
        border-radius: 0;
        padding-top: 55px;
    }

    .controls.open {
        left: 0;
        z-index: 1004;
    }

    .feedback {
        display: none;
    }

    header h1 {
        font-size: 1.3em;
    }

    header .subtitle {
        display: none;
    }

    header {
        flex-direction: column;
        gap: 10px;
    }

    header .credits {
        display: none;
    }
}

@media (max-width: 1000px) {
    .main-content {
        grid-template-columns: 1fr;
        gap: 10px;
    }
}