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

:root {
    /* Premium Dark Theme Palette */
    --bg-primary: #050507;
    /* Deep rich black/blue */
    --bg-secondary: rgba(30, 30, 35, 0.6);
    /* Glassmorphism base */
    --bg-tertiary: rgba(255, 255, 255, 0.05);
    --bg-input: rgba(0, 0, 0, 0.3);

    --text-primary: #ffffff;
    --text-secondary: #94949e;

    /* Vibrant Gradient Accent */
    --accent: #4c6ef5;
    --accent-gradient: linear-gradient(135deg, #4c6ef5 0%, #a650eb 100%);
    --accent-hover: #5c7cfa;

    --border: rgba(255, 255, 255, 0.1);
    --border-hover: rgba(255, 255, 255, 0.2);

    --danger: #ff6b6b;
    --success: #51cf66;

    --radius: 16px;
    --radius-sm: 10px;

    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.2);
    --glass-blur: blur(20px);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    background-image:
        radial-gradient(circle at 15% 50%, rgba(76, 110, 245, 0.08) 0%, transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(166, 80, 235, 0.08) 0%, transparent 25%);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.app-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 24px;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.header {
    margin-bottom: 24px;
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
}

.header-title {
    text-align: left;
}

.header-title h1 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 6px;
    background: linear-gradient(135deg, #fff 0%, #a0a0a5 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}

.header-title p {
    color: var(--text-secondary);
    font-size: 13px;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Language Switcher */
.language-switcher {
    display: flex;
    align-items: center;
    gap: 4px;
    background: var(--bg-secondary);
    padding: 4px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.lang-btn {
    padding: 6px 12px;
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    color: var(--text-secondary);
    background: transparent;
    border-radius: 6px;
    transition: all 0.2s ease;
}

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

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

/* Footer */
.footer {
    position: fixed;
    bottom: 16px;
    right: 16px;
    z-index: 50;
    opacity: 0.6;
    transition: opacity 0.2s ease;
}

.footer:hover {
    opacity: 1;
}

.footer .language-switcher {
    padding: 2px;
}

.footer .lang-btn {
    padding: 4px 8px;
    font-size: 11px;
}

.undo-redo-controls,
.zoom-controls {
    display: flex;
    align-items: center;
    gap: 4px;
    background: var(--bg-secondary);
    padding: 4px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.zoom-controls span {
    font-size: 13px;
    color: var(--text-secondary);
    min-width: 40px;
    text-align: center;
}

.btn.btn-icon {
    width: 32px;
    height: 32px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: 6px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 16px;
}

.btn.btn-icon:hover:not(:disabled) {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

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

.btn.btn-icon:disabled svg {
    stroke: var(--text-secondary);
}

.main-content {
    display: flex;
    gap: 32px;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

/* Controls Panel */
.controls-panel {
    width: 360px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    gap: 24px;
    overflow-y: auto;
    overflow-x: hidden;
    padding-right: 8px;
}

/* Custom scrollbar styles */
.controls-panel::-webkit-scrollbar,
.preview-panel::-webkit-scrollbar {
    width: 8px;
}

.controls-panel::-webkit-scrollbar-track,
.preview-panel::-webkit-scrollbar-track {
    background: transparent;
}

.controls-panel::-webkit-scrollbar-thumb,
.preview-panel::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

.controls-panel::-webkit-scrollbar-thumb:hover,
.preview-panel::-webkit-scrollbar-thumb:hover {
    background: #3c3c3e;
}

.control-section {
    background: var(--bg-secondary);
    border-radius: var(--radius);
    padding: 24px;
    border: 1px solid var(--border);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.control-section:hover {
    border-color: var(--border-hover);
}

.control-section h2 {
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

/* Upload Area */
.upload-area {
    border: 2px dashed var(--border);
    border-radius: var(--radius-sm);
    padding: 24px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    background: var(--bg-tertiary);
}

.upload-area:hover {
    border-color: var(--accent);
    background: rgba(76, 110, 245, 0.1);
    transform: translateY(-2px);
}

.upload-area.drag-over {
    border-color: var(--accent);
    background: rgba(10, 132, 255, 0.1);
}

.upload-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
}

.upload-placeholder svg {
    opacity: 0.5;
}

.upload-placeholder span {
    font-size: 13px;
}

.uploaded-preview {
    max-width: 100%;
    max-height: 200px;
    border-radius: var(--radius-sm);
    object-fit: contain;
}

/* Input Groups */
.input-group {
    margin-bottom: 16px;
}

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

.input-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.input-group input[type="text"],
.input-group textarea,
.input-group select {
    width: 100%;
    padding: 12px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    transition: all 0.2s ease;
    backdrop-filter: blur(4px);
}

.input-group textarea {
    resize: vertical;
    min-height: 80px;
    line-height: 1.5;
}

.input-group input[type="text"]:focus,
.input-group textarea:focus,
.input-group select:focus {
    outline: none;
    border-color: var(--accent);
    background: rgba(0, 0, 0, 0.4);
    box-shadow: 0 0 0 3px rgba(76, 110, 245, 0.15);
}

.input-group input[type="text"]::placeholder,
.input-group textarea::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

/* Font Select with Preview */
.font-select-wrapper {
    display: flex;
    gap: 10px;
    align-items: center;
}

.font-select-wrapper select {
    flex: 1;
}

.font-preview {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 44px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 18px;
    font-weight: 500;
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.font-preview:hover {
    border-color: var(--border-hover);
    background: rgba(0, 0, 0, 0.4);
}

/* Color Input */
.color-input-wrapper {
    display: flex;
    gap: 8px;
    align-items: center;
}

.color-input-wrapper input[type="color"] {
    width: 44px;
    height: 44px;
    padding: 2px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.color-input-wrapper input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 2px;
}

.color-input-wrapper input[type="color"]::-webkit-color-swatch {
    border-radius: 4px;
    border: none;
}

.color-text {
    flex: 1;
    text-transform: uppercase;
}

/* Color Presets */
.color-presets {
    display: flex;
    gap: 6px;
    margin-top: 8px;
    flex-wrap: wrap;
}

.color-preset {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    border: 2px solid var(--border);
    cursor: pointer;
    transition: all 0.2s ease;
    padding: 0;
}

.color-preset:hover {
    transform: scale(1.15);
    border-color: var(--text-primary);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.color-preset:active {
    transform: scale(0.95);
}

.color-preset[data-color="#ffffff"] {
    border-color: var(--text-secondary);
}

/* Range Input */
.input-group input[type="range"] {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
}

.input-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: var(--text-primary);
    border: 2px solid var(--bg-primary);
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.1s ease, box-shadow 0.2s ease;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

.input-group input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    background: var(--accent);
}

#scaleValue,
#titleFontSizeValue,
#subtitleFontSizeValue,
#titlePositionYValue,
#subtitlePositionYValue,
#textPaddingValue,
#positionXValue,
#positionYValue {
    display: inline-block;
    margin-top: 8px;
    font-size: 13px;
    color: var(--text-secondary);
}

/* Row layout for side-by-side inputs */
.row-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.row-2 .input-group {
    margin-bottom: 16px;
}

/* Background Pattern spacing */
.input-group:has(#bgPatternSelect) {
    margin-top: 24px;
}

/* Toggle Group */
.toggle-group {
    display: flex;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    padding: 4px;
    gap: 4px;
}

.toggle-btn {
    flex: 1;
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 500;
    font-family: inherit;
    background: transparent;
    border: none;
    border-radius: 6px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.toggle-btn:hover {
    color: var(--text-primary);
}

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

/* Screenshots Grid */
.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin-bottom: 16px;
}

.upload-area-mini {
    aspect-ratio: 9 / 16;
    border: 2px dashed var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.upload-area-mini:hover {
    border-color: var(--accent);
    background: rgba(10, 132, 255, 0.05);
}

.upload-area-mini.drag-over {
    border-color: var(--accent);
    background: rgba(10, 132, 255, 0.1);
}

.upload-area-mini.active {
    border-color: var(--accent);
    border-style: solid;
    box-shadow: 0 0 0 2px rgba(10, 132, 255, 0.3);
}

/* Screenshot slot hints */
.upload-area-mini::after {
    content: attr(data-hint);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-4px);
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 11px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
    z-index: 100;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.upload-area-mini:hover::after {
    opacity: 1;
    transform: translateX(-50%) translateY(-8px);
}

.upload-area-mini.has-image::after {
    content: attr(data-hint-filled);
}

.upload-placeholder-mini {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    color: var(--text-secondary);
}

.upload-placeholder-mini svg {
    opacity: 0.5;
}

.upload-placeholder-mini span {
    font-size: 12px;
    font-weight: 600;
}

.uploaded-preview-mini {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: calc(var(--radius-sm) - 2px);
}

/* Template Controls */
.template-controls {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.template-controls select {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    cursor: pointer;
}

/* Project Controls */
.project-controls {
    display: flex;
    gap: 8px;
}

.project-controls .btn {
    flex: 1;
    padding: 10px 12px;
    font-size: 13px;
}

.project-controls .btn svg {
    flex-shrink: 0;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    font-size: 14px;
    font-weight: 500;
    font-family: inherit;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    letter-spacing: 0.3px;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 12px rgba(76, 110, 245, 0.3);
    border: none;
}

.btn-primary:hover {
    background: var(--accent-gradient);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(76, 110, 245, 0.4);
    filter: brightness(1.1);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--border);
    backdrop-filter: blur(4px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--border-hover);
    transform: translateY(-1px);
}

.btn-danger {
    background: transparent;
    color: var(--danger);
    border: 1px solid var(--danger);
}

.btn-danger:hover:not(:disabled) {
    background: var(--danger);
    color: white;
}

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

.btn-small {
    padding: 8px 12px;
    font-size: 12px;
}

/* Translation controls */
.translate-row {
    display: flex;
    gap: 8px;
    align-items: center;
}

.translate-lang-select {
    flex: 1;
    padding: 8px 10px !important;
    font-size: 12px !important;
    min-width: 100px;
}

.btn-translate {
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    white-space: nowrap;
}

.btn-translate:hover {
    background: var(--accent);
    border-color: var(--accent);
}

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

.btn-translate.translating {
    pointer-events: none;
    opacity: 0.7;
}

.btn-translate svg {
    flex-shrink: 0;
}

/* Align buttons */
.align-buttons {
    display: flex;
    gap: 8px;
}

.align-buttons .btn {
    flex: 1;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.align-buttons .btn:hover {
    background: var(--accent);
    border-color: var(--accent);
}

/* Crop controls */
.crop-controls {
    margin-top: 12px;
    padding: 12px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--accent);
}

.crop-buttons {
    display: flex;
    gap: 8px;
}

.crop-buttons .btn {
    flex: 1;
}

/* Crop mode indicator on canvas */
.canvas-container.crop-mode {
    outline: 3px solid #ffb347;
    outline-offset: 4px;
    border-radius: var(--radius);
}

/* Crop mode badge */
.crop-mode-badge {
    position: absolute;
    top: -30px;
    left: 50%;
    transform: translateX(-50%);
    background: #ffb347;
    color: #1a1a1a;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    z-index: 10;
    animation: cropBadgePulse 2s ease-in-out infinite;
}

@keyframes cropBadgePulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* Dim other controls when in crop mode */
body.crop-mode-active .controls-panel .control-section:not([data-tab="screenshots"]) {
    opacity: 0.4;
    pointer-events: none;
}

body.crop-mode-active .canvas-tabs-container {
    opacity: 0.4;
    pointer-events: none;
}

body.crop-mode-active .export-section {
    opacity: 0.4;
    pointer-events: none;
}

.export-section {
    margin-top: auto;
    padding-top: 24px;
    display: flex;
    gap: 8px;
}

.export-section .btn {
    flex: 1;
    padding: 14px 8px;
    font-size: 13px;
}

/* Preview Panel */
.preview-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 32px;
    overflow-y: auto;
    overflow-x: hidden;
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    position: relative;
    /* Stage lighting effect */
    box-shadow: inset 0 0 100px rgba(0, 0, 0, 0.5);
}

.preview-wrapper {
    position: relative;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    z-index: 1;
}

#previewCanvas {
    max-width: 100%;
    max-height: 100%;
    border-radius: var(--radius-sm);
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.1);
    transition: transform 0.3s ease;
}

.preview-hint {
    margin-top: 16px;
    font-size: 12px;
    color: var(--text-secondary);
}

/* Inline Text Editor for canvas */
.inline-text-editor {
    position: absolute;
    background: transparent;
    border: none;
    border-radius: 0;
    color: #ffffff;
    font-family: inherit;
    resize: none;
    overflow: hidden;
    z-index: 100;
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    text-align: center;
    outline: none;
    min-width: 100px;
    min-height: 40px;
    caret-color: var(--accent);
    text-shadow: 0 0 0 transparent;
}

.inline-text-editor:focus {
    outline: 2px dashed var(--accent);
    outline-offset: 4px;
}

.inline-text-editor::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

/* Canvas Tabs */
.canvas-tabs-container {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    width: 100%;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.canvas-tabs {
    display: flex;
    flex-wrap: nowrap;
    gap: 4px;
    flex: 1;
    padding: 2px;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}

/* Custom scrollbar for tabs */
.canvas-tabs::-webkit-scrollbar {
    height: 4px;
}

.canvas-tabs::-webkit-scrollbar-track {
    background: transparent;
}

.canvas-tabs::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 2px;
}

.canvas-tabs::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

.canvas-tab {
    padding: 8px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.canvas-tab:hover {
    background: var(--bg-secondary);
    border-color: var(--accent);
    color: var(--text-primary);
}

.canvas-tab.active {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

.canvas-tab-delete {
    opacity: 0.5;
    padding: 2px 4px;
    font-size: 14px;
    line-height: 1;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.canvas-tab-delete:hover {
    opacity: 1;
    background: rgba(255, 69, 58, 0.2);
    color: var(--danger);
}

.canvas-tab.active .canvas-tab-delete:hover {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.card-count {
    font-size: 12px;
    color: var(--text-secondary);
    padding: 6px 12px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    white-space: nowrap;
    flex-shrink: 0;
}

#addCanvasBtn {
    flex-shrink: 0;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.modal[hidden] {
    display: none;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: var(--radius);
    padding: 24px;
    width: 100%;
    max-width: 400px;
    border: 1px solid var(--border);
}

.modal-content h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
}

.modal-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    margin-top: 20px;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 1100;
    display: flex;
    flex-direction: column;
    gap: 8px;
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    box-shadow: var(--shadow-md);
    pointer-events: auto;
    transform: translateX(120%);
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.toast.toast-visible {
    transform: translateX(0);
    opacity: 1;
}

.toast.toast-hiding {
    transform: translateX(120%);
    opacity: 0;
}

.toast-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.toast-success {
    border-color: var(--success);
}

.toast-success .toast-icon {
    color: var(--success);
}

.toast-error {
    border-color: var(--danger);
}

.toast-error .toast-icon {
    color: var(--danger);
}

.toast-info {
    border-color: var(--accent);
}

.toast-info .toast-icon {
    color: var(--accent);
}

.toast-warning {
    border-color: #ffb347;
}

.toast-warning .toast-icon {
    color: #ffb347;
}

@media (max-width: 768px) {
    .toast-container {
        bottom: calc(80px + env(safe-area-inset-bottom));
        right: 16px;
        left: 16px;
    }

    .toast {
        width: 100%;
    }
}

/* Checkbox styling */
.input-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-right: 8px;
    accent-color: var(--accent);
    cursor: pointer;
}

.input-group label:has(input[type="checkbox"]) {
    display: flex;
    align-items: center;
    cursor: pointer;
}

/* Mobile Tab Bar - Hidden on desktop */
.mobile-tabs {
    display: none;
}

.bottom-sheet-handle {
    display: none;
}

/* Responsive */
@media (max-width: 1024px) {
    .main-content {
        flex-direction: column;
    }

    .controls-panel {
        width: 100%;
    }

    .preview-panel {
        min-height: 500px;
    }
}

@media (max-width: 640px) {
    .app-container {
        padding: 16px;
    }

    .header h1 {
        font-size: 22px;
    }

    .control-section {
        padding: 16px;
    }
}

/* Mobile Bottom Sheet Navigation */
@media (max-width: 768px) {

    /* Compact header */
    .app-container {
        padding: 12px;
        height: auto;
        min-height: 100vh;
        overflow: hidden;
    }

    .header {
        margin-bottom: 12px;
    }

    .header-top {
        flex-wrap: wrap;
        gap: 8px;
    }

    .header-title p {
        display: none;
    }

    .header-title h1 {
        font-size: 18px;
    }

    .header-controls {
        gap: 8px;
    }

    /* Main content adjustments */
    .main-content {
        flex-direction: column;
        gap: 0;
        height: calc(100vh - 80px);
        padding-bottom: 70px;
        /* Space for tab bar */
        overflow: hidden;
    }

    /* Preview panel takes priority */
    .preview-panel {
        flex: 1;
        min-height: 0;
        padding: 12px;
        border-radius: var(--radius);
        margin: 0;
        overflow: hidden;
    }

    .preview-wrapper {
        height: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    #previewCanvas {
        max-height: 100%;
        max-width: 100%;
    }

    .preview-hint {
        display: none;
    }

    /* Controls panel as bottom sheet */
    .controls-panel {
        position: fixed;
        bottom: 60px;
        left: 0;
        right: 0;
        max-height: 55vh;
        width: 100%;
        background: var(--bg-secondary);
        border-radius: 16px 16px 0 0;
        border: 1px solid var(--border);
        border-bottom: none;
        transform: translateY(100%);
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 100;
        padding: 0 16px 16px;
        overflow-y: auto;
        overflow-x: hidden;
    }

    .controls-panel.expanded {
        transform: translateY(0);
    }

    /* Bottom sheet handle */
    .bottom-sheet-handle {
        display: flex;
        justify-content: center;
        padding: 14px 0;
        cursor: grab;
        position: sticky;
        top: 0;
        background: var(--bg-secondary);
        z-index: 1;
        margin: 0 -16px;
        padding-left: 16px;
        padding-right: 16px;
    }

    .handle-bar {
        width: 48px;
        height: 5px;
        background: var(--text-secondary);
        border-radius: 3px;
        transition: all 0.2s ease;
        animation: handlePulse 3s ease-in-out infinite;
    }

    @keyframes handlePulse {
        0%, 100% { opacity: 0.6; transform: scaleX(1); }
        50% { opacity: 1; transform: scaleX(1.1); }
    }

    .bottom-sheet-handle:hover .handle-bar {
        background: var(--accent);
        animation: none;
        opacity: 1;
    }

    .bottom-sheet-handle:active .handle-bar {
        background: var(--accent);
        transform: scaleX(0.9);
        animation: none;
    }

    /* Hide all sections by default, show active tab */
    .controls-panel .control-section {
        display: none;
    }

    .controls-panel .control-section.active-tab {
        display: block;
    }

    /* Mobile Tab Bar */
    .mobile-tabs {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        border-top: 1px solid var(--border);
        padding: 6px 8px;
        padding-bottom: calc(6px + env(safe-area-inset-bottom));
        z-index: 101;
        gap: 4px;
    }

    .mobile-tab {
        flex: 1;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 2px;
        padding: 6px 4px;
        background: none;
        border: none;
        border-radius: var(--radius-sm);
        color: var(--text-secondary);
        font-size: 10px;
        font-family: inherit;
        cursor: pointer;
        transition: all 0.2s ease;
    }

    .mobile-tab:hover {
        background: var(--bg-tertiary);
    }

    .mobile-tab.active {
        color: var(--accent);
        background: rgba(10, 132, 255, 0.1);
    }

    .mobile-tab svg {
        width: 22px;
        height: 22px;
        stroke-width: 1.5;
    }

    .mobile-tab span {
        font-weight: 500;
    }

    /* Hide footer on mobile */
    .footer {
        display: none;
    }

    /* Floating Export Buttons (FAB) */
    .export-section {
        position: fixed;
        bottom: calc(75px + env(safe-area-inset-bottom));
        right: 16px;
        padding: 0;
        margin: 0;
        z-index: 102;
        flex-direction: column;
        gap: 10px;
    }

    .export-section .btn {
        width: 52px;
        height: 52px;
        border-radius: 50%;
        padding: 0;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
        flex: none;
    }

    .export-section .btn span {
        display: none;
    }

    .export-section .btn svg {
        width: 22px;
        height: 22px;
    }

    /* Adjust control sections spacing */
    .control-section {
        margin-bottom: 16px;
        padding: 16px;
    }

    .control-section:last-of-type {
        margin-bottom: 0;
    }

    /* Screenshots grid on mobile */
    .screenshots-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 6px;
    }

    /* Row layout stacks on mobile */
    .row-2 {
        grid-template-columns: 1fr;
        gap: 8px;
    }
}