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

:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --secondary-color: #64748b;
    --danger-color: #ef4444;
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --border-color: #334155;
    --text-color: #f1f5f9;
    --text-muted: #94a3b8;
}

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    font-size: 14px;
    line-height: 1.4;
}

.app-container {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

.control-panel {
    width: 336px;
    min-width: 336px;
    background: var(--card-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    padding: 12px;
    gap: 12px;
}

.app-header {
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.app-title {
    display: flex;
    align-items: baseline;
    gap: 8px;
}

.app-header h1 {
    font-size: 1.25rem;
    background: linear-gradient(135deg, #6366f1, #a855f7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}


.app-lang {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.7rem;
    color: var(--text-muted);
}

.lang-select {
    padding: 2px 6px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-color);
    color: var(--text-color);
    font-size: 0.7rem;
}

.input-section {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
    min-height: 0;
}

.input-row {
    display: flex;
    gap: 8px;
    width: 100%;
    overflow: hidden;
}

.emoji-fit-toggle {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background: var(--bg-color);
    color: var(--text-color);
    font-weight: 700;
    font-size: 0.9rem;
    line-height: 30px;
    padding: 0;
    cursor: pointer;
}

.emoji-fit-toggle.active {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}

#emojiInput {
    flex: 1;
    min-width: 0;
    max-width: 180px;
    height: 32px;
    padding: 0 8px;
    font-size: 1rem;
    line-height: 30px;
    text-align: center;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-color);
    color: var(--text-color);
}

#emojiInput::placeholder {
    font-size: 0.85rem;
    color: var(--text-muted);
}

#emojiInput:focus {
    outline: none;
    border-color: var(--primary-color);
}

#addEmojiBtn {
    flex-shrink: 0;
    min-width: 60px;
    height: 32px;
    line-height: 30px;
    padding: 0 10px;
    font-weight: 700;
    font-size: 0.9rem;
}

#addImageBtn {
    flex-shrink: 0;
}

.emoji-image-input {
    position: absolute;
    width: 1px;
    height: 1px;
    opacity: 0;
    pointer-events: none;
}

.emoji-fit-row {
    display: none;
    align-items: center;
    gap: 6px;
    padding: 4px;
    background: var(--bg-color);
    border-radius: 6px;
}

.emoji-fit-row.is-visible {
    display: flex;
}

.emoji-search {
    width: 100%;
    height: 30px;
    padding: 0 8px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-color);
    color: var(--text-color);
    font-size: 0.85rem;
}

.emoji-search::placeholder {
    color: var(--text-muted);
}

.emoji-search:focus {
    outline: none;
    border-color: var(--primary-color);
}

.emoji-fit-label {
    font-size: 0.7rem;
    color: var(--text-muted);
}

.emoji-fit-select {
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-color);
    color: var(--text-color);
    font-size: 0.7rem;
    padding: 2px 4px;
}

#emojiScaleInput {
    flex: 1;
    height: 4px;
    cursor: pointer;
}

.emoji-fit-value {
    font-size: 0.7rem;
    color: var(--text-muted);
    min-width: 44px;
    text-align: right;
}

.emoji-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    max-height: 108px;
    overflow-y: auto;
    padding: 4px;
    background: var(--bg-color);
    border-radius: 6px;
}

.emoji-nav-btn {
    border: 1px solid var(--border-color);
    border-radius: 999px;
    padding: 2px 8px;
    font-size: 0.65rem;
    color: var(--text-muted);
    background: transparent;
    cursor: pointer;
    transition: all 0.15s;
}

.emoji-nav-btn:hover {
    border-color: var(--primary-color);
    color: var(--text-color);
}

.emoji-nav-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.emoji-scroll {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    flex: 1;
    min-height: 120px;
    overflow-y: auto;
    padding: 4px;
    background: var(--bg-color);
    border-radius: 6px;
}

.emoji-category {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 2px 0 6px;
    border-bottom: 1px dashed rgba(148, 163, 184, 0.2);
}

.emoji-category:last-child {
    border-bottom: none;
}

.emoji-category-title {
    font-size: 0.65rem;
    color: var(--text-muted);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    padding: 2px 2px 0;
}

.emoji-group {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.emoji-loading {
    color: var(--text-muted);
    font-size: 0.75rem;
    padding: 6px 4px;
}

.emoji-btn {
    width: 32px;
    height: 32px;
    font-size: 1.1rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: transparent;
    cursor: pointer;
    transition: all 0.15s;
}

.emoji-btn:hover {
    border-color: var(--primary-color);
    transform: scale(1.1);
}

.btn {
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-color);
    color: var(--text-color);
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.15s;
}

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

.btn-primary {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-hover);
}

.btn-small {
    padding: 4px 8px;
    font-size: 0.75rem;
}

.btn-icon {
    width: 32px;
    height: 32px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-danger:hover {
    border-color: var(--danger-color);
    color: var(--danger-color);
}

.transform-section {
    border: 1px solid var(--border-color);
    border-radius: 6px;
}

.transform-section summary {
    padding: 8px;
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.transform-section[open] summary {
    border-bottom: 1px solid var(--border-color);
}

.transform-controls {
    padding: 8px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.transform-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

.transform-row label {
    width: 45px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.transform-row input[type="range"] {
    flex: 1;
    height: 4px;
    cursor: pointer;
}

.transform-row span {
    width: 40px;
    text-align: right;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.frames-section {
    flex: 0 0 auto;
    min-height: 90px;
    max-height: 240px;
    margin-top: auto;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    overflow: hidden;
}

.frames-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px;
    background: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
}

#frameCount {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.tween-setting {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-left: auto;
}

.tween-setting label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.tween-setting select,
.tween-setting input {
    width: 56px;
    padding: 2px 4px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-color);
    color: var(--text-color);
    font-size: 0.75rem;
}

.tween-info {
    display: block;
    padding: 4px 8px;
    font-size: 0.7rem;
    color: var(--primary-color);
}

.frames-container {
    flex: 1;
    display: flex;
    gap: 6px;
    padding: 6px;
    overflow-x: auto;
    align-items: flex-start;
}

.empty-frames {
    width: 100%;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8rem;
    padding: 16px;
}

.frame-item {
    flex-shrink: 0;
    background: var(--bg-color);
    border: 2px solid var(--border-color);
    border-radius: 6px;
    padding: 4px;
    text-align: center;
    cursor: pointer;
    position: relative;
    transition: all 0.15s;
}

.frame-item:hover {
    border-color: var(--primary-color);
}

.frame-item.active {
    border-color: var(--primary-color);
    box-shadow: 0 0 8px rgba(99, 102, 241, 0.3);
}

.frame-item canvas {
    width: 50px;
    height: 50px;
    image-rendering: pixelated;
    border-radius: 3px;
}

.frame-number {
    font-size: 0.65rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.frame-name {
    width: 58px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-color);
    color: var(--text-color);
    font-size: 0.7rem;
    text-align: center;
    padding: 2px 4px;
}

.frame-name:focus {
    outline: none;
    border-color: var(--primary-color);
}

.frame-delete {
    position: absolute;
    top: -6px;
    right: -6px;
    width: 18px;
    height: 18px;
    background: var(--danger-color);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    font-size: 10px;
    opacity: 0;
    transition: opacity 0.15s;
}

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

.keyframe-badge {
    position: absolute;
    top: -6px;
    left: -6px;
    background: var(--primary-color);
    color: white;
    font-size: 0.55rem;
    padding: 1px 4px;
    border-radius: 3px;
}

.frame-render-badge {
    position: absolute;
    top: -6px;
    right: 14px;
    background: #22c55e;
    color: #0f172a;
    font-size: 0.55rem;
    font-weight: 700;
    padding: 1px 4px;
    border-radius: 3px;
}

.frame-sample-badge {
    position: absolute;
    top: -6px;
    right: 36px;
    background: #f59e0b;
    color: #0f172a;
    font-size: 0.55rem;
    font-weight: 700;
    padding: 1px 4px;
    border-radius: 3px;
}

.tween-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.7rem;
}

.animation-section {
    padding: 8px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
}

.anim-controls {
    display: flex;
    align-items: center;
    gap: 8px;
}

.anim-controls input[type="range"] {
    flex: 1;
    height: 4px;
}

.anim-controls input[type="number"] {
    width: 90px;
    padding: 4px 6px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-color);
    color: var(--text-color);
    font-size: 0.75rem;
}

#speedValue {
    font-size: 0.75rem;
    color: var(--text-muted);
    min-width: 45px;
}

.preview-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: 12px 16px;
    gap: 12px;
    overflow: hidden;
    position: relative;
    --tools-offset: 284px;
}

.preview-toolbar {
    display: flex;
    gap: 12px;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: none;
    padding: 8px 12px;
    background: var(--card-bg);
    border-radius: 8px;
    flex-wrap: wrap;
}

.pixel-tools {
    position: absolute;
    top: 96px;
    right: 16px;
    width: 300px;
    max-height: calc(100% - 120px);
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 2;
    overflow-y: auto;
}

.pixel-tools-header {
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.pixel-tools-section {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.pixel-tools-title {
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 0.06em;
}

.tool-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
}

.tool-btn {
    width: 100%;
    height: 42px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-color);
    color: var(--text-color);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.15s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    flex-direction: column;
}

.tool-btn:hover {
    border-color: var(--primary-color);
}

.tool-row {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.tool-row-compact {
    gap: 8px;
    flex-wrap: nowrap;
}

.tool-row input[type="color"] {
    -webkit-appearance: none;
    appearance: none;
    display: inline-block;
    width: 64px;
    min-width: 64px;
    height: 32px;
    min-height: 32px;
    padding: 0;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-color);
    box-sizing: border-box;
    cursor: pointer;
}

.color-input-wide {
    width: 72px;
    min-width: 72px;
    height: 32px;
    min-height: 32px;
}

.tool-row input[type="color"]::-webkit-color-swatch {
    border: none;
    border-radius: 3px;
}

.tool-row input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}

.tool-row input[type="color"]::-moz-color-swatch {
    border: none;
    border-radius: 3px;
}

.tool-row input[type="range"] {
    flex: 1;
    height: 4px;
}

.tool-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    min-width: 28px;
}

.tool-icon {
    font-size: 1rem;
    line-height: 1;
}

.tool-text {
    font-size: 0.65rem;
    color: var(--text-muted);
}

.tool-btn.icon-only {
    flex-direction: row;
    font-size: 1.1rem;
}

#bgToleranceValue {
    display: none;
}

#selectToggleBtn.is-active {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

#colorSelectBtn.is-active {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

#selectToggleBtn.is-active,
#colorSelectBtn.is-active {
    background: rgba(99, 102, 241, 0.15);
}

.pixel-tools-hints,
.preview-shortcuts {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 8px;
    font-size: 0.65rem;
    color: var(--text-muted);
}

.keycap {
    display: inline-block;
    padding: 2px 6px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-color);
    color: var(--text-color);
    font-size: 0.6rem;
}

#bgPickBtn.is-active,
#selectToggleBtn.is-active,
#colorSelectBtn.is-active {
    background: rgba(99, 102, 241, 0.15);
}

.canvas-settings {
    display: flex;
    gap: 8px;
    align-items: center;
    flex: 1;
    flex-wrap: nowrap;
    overflow: hidden;
}

.setting-item {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
}

.setting-item label {
    color: var(--text-muted);
}

.setting-item select,
.setting-item input {
    width: 56px;
    padding: 4px 6px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-color);
    color: var(--text-color);
    font-size: 0.7rem;
    cursor: pointer;
}

.unit-field {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.unit-field input {
    padding-right: 24px;
}

.unit-badge {
    position: absolute;
    right: 6px;
    font-size: 0.6rem;
    color: var(--text-muted);
    pointer-events: none;
}

/* Hide number input spinners */
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

input[type="number"] {
    -moz-appearance: textfield;
}

.setting-item select {
    width: 72px;
}

.setting-divider {
    width: 1px;
    height: 22px;
    background: var(--border-color);
    opacity: 0.7;
    margin: 0 2px;
    flex-shrink: 0;
}

.unit-select {
    width: 46px;
}

#pixelSizeInput,
#gapSizeInput {
    width: 58px;
}

#gridWidthInput,
#gridHeightInput {
    width: 44px;
}

#renderModeSelect {
    width: 58px;
}

#unitSelect {
    width: 58px;
}

.setting-item .unit {
    color: var(--text-muted);
    font-size: 0.65rem;
    white-space: nowrap;
}

.export-controls {
    display: flex;
    gap: 6px;
    align-items: center;
    flex-shrink: 0;
    flex-wrap: wrap;
}

.export-controls select {
    padding: 4px 6px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-color);
    color: var(--text-color);
    font-size: 0.75rem;
}


.pixel-style-toggle {
    display: flex;
    gap: 2px;
    background: var(--bg-color);
    padding: 2px;
    border-radius: 4px;
}

.style-btn {
    width: 26px;
    height: 26px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    border-radius: 3px;
    cursor: pointer;
    transition: all 0.15s;
    font-size: 0.9rem;
}

.style-btn:hover {
    color: var(--text-color);
    background: var(--border-color);
}

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

.mode-toggle {
    display: flex;
    gap: 4px;
    background: var(--card-bg);
    padding: 4px;
    border-radius: 6px;
}

.mode-btn {
    padding: 6px 12px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.15s;
}

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

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

.canvas-container {
    display: flex;
    flex: 1;
    align-items: center;
    justify-content: center;
    position: relative;
    width: 100%;
    padding-right: var(--tools-offset);
    box-sizing: border-box;
}

#mainCanvas {
    width: 160mm;
    height: 160mm;
    background: 
        linear-gradient(45deg, #2a2a2a 25%, transparent 25%),
        linear-gradient(-45deg, #2a2a2a 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #2a2a2a 75%),
        linear-gradient(-45deg, transparent 75%, #2a2a2a 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
    background-color: #1a1a1a;
    border-radius: 8px;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
    cursor: grab;
}

#mainCanvas:active {
    cursor: grabbing;
}

#mainCanvas.play-mode {
    cursor: default;
}

#mainCanvas.selecting {
    cursor: crosshair;
}

#mainCanvas.selecting:active {
    cursor: crosshair;
}

#mainCanvas.color-selecting {
    cursor: crosshair;
}

#mainCanvas.color-selecting:active {
    cursor: crosshair;
}

#selectionCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    mix-blend-mode: difference;
}

.transform-bar {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 6px;
    background: var(--bg-color);
    border-radius: 8px;
}

.transform-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--text-muted);
    width: 100%;
}

.transform-item input[type="range"] {
    flex: 1;
    width: auto;
    height: 4px;
    cursor: pointer;
}

.transform-item span:last-child {
    min-width: 35px;
    text-align: right;
}

.render-bar {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 6px;
    background: var(--bg-color);
    border-radius: 8px;
    font-size: 0.75rem;
    width: 100%;
}

.render-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--text-muted);
    width: 100%;
    justify-content: space-between;
}

.render-item-inline {
    justify-content: flex-start;
}

.render-item-quantize {
    justify-content: flex-start;
    gap: 8px;
}

.render-item-quantize input[type="range"] {
    flex: 1;
    width: auto;
}

.render-item-center {
    justify-content: center;
}

.render-item input:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.render-item input[type="range"] {
    width: 120px;
    height: 4px;
    cursor: pointer;
}

.render-item select {
    width: 72px;
    padding: 4px 6px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-color);
    color: var(--text-color);
    font-size: 0.7rem;
}

.canvas-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-align: center;
    width: 100%;
    padding-right: var(--tools-offset);
    box-sizing: border-box;
}

.preview-shortcuts {
    justify-content: center;
    width: 100%;
    padding-right: var(--tools-offset);
    box-sizing: border-box;
}

.preview-author {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-align: center;
    width: 100%;
    padding-right: var(--tools-offset);
    box-sizing: border-box;
}

.canvas-hint.hidden {
    opacity: 0;
}

.toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 10px 20px;
    border-radius: 6px;
    font-size: 0.85rem;
    z-index: 1000;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translate(-50%, 20px);
    }
    to {
        opacity: 1;
        transform: translate(-50%, 0);
    }
}

::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

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