/* --- Global Design System (Root Variables) --- */
/* Inspired by AdminLTE Dark Theme */
:root {
  --primary-color: #007bff;
  --primary-light: #3395ff;
  --primary-dark: #0062cc;
  --secondary-color: #6c757d;
  --secondary-light: #868e96;
  --secondary-dark: #5a6268;
  --accent-color: #28a745;
  --background-dark: #343a40;
  --background-medium: #454d55;
  --background-light: #495057;
  --text-bright: #f8f9fa;
  --text-normal: #ced4da;
  --text-muted: #adb5bd;
  --border-color: #6c757d;
  --shadow-soft: 0 0 1px rgba(0, 0, 0, 0.125), 0 1px 3px rgba(0, 0, 0, 0.2);
  --shadow-strong: 0 3px 6px rgba(0, 0, 0, 0.16), 0 3px 6px rgba(0, 0, 0, 0.23);
  --panel-radius: 0.25rem;
  --button-radius: 0.25rem;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --checkerboard-size: 20px;
  --checkerboard-color-1: var(--background-medium);
  --checkerboard-color-2: var(--background-light);
  /* ADDED FOR MOBILE/TABLET: Dynamic viewport height */
  --real-vh: 1vh;
}
/* --- Base & Global Styles --- */
* {
  box-sizing: border-box;
  -webkit-user-select: none;
  -ms-user-select: none;
  user-select: none;
  margin: 0;
  padding: 0;
}
body {
  font-family: "Source Sans Pro", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--background-medium);
  color: var(--text-normal);
  overflow: hidden;
  height: 100vh;
  /* FIX: Use dynamic viewport height on mobile to prevent address bar issues */
  height: calc(var(--real-vh, 1vh) * 100);
  width: 100vw;
  line-height: 1.5;
}
/* --- UI Enhancements: Loaders, Indicators, Tooltips --- */
.loading {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(5px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
}
.loading-spinner {
  width: 50px;
  height: 50px;
  border: 4px solid rgba(0, 123, 255, 0.2);
  border-top: 4px solid var(--primary-color);
  border-radius: 50%;
  animation: fa-spin 1s linear infinite;
}
@keyframes fa-spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}
.status-indicator {
  position: fixed;
  top: 20px;
  left: 50%;
  background: var(--background-dark);
  color: var(--text-bright);
  padding: 10px 20px;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 500;
  z-index: 2000;
  opacity: 0;
  transform: translateX(-50%) translateY(-20px);
  transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
  pointer-events: none;
  box-shadow: var(--shadow-strong);
}
.status-indicator.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
#global-tooltip {
  position: fixed;
  background: rgba(0, 0, 0, 0.85);
  color: white;
  padding: 8px 14px;
  border-radius: var(--button-radius);
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
  z-index: 9999;
  box-shadow: var(--shadow-soft);
}
.floating-toolbar {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--background-dark);
    padding: 8px;
    border-radius: var(--button-radius);
    box-shadow: var(--shadow-strong);
    display: flex;
    gap: 8px;
    z-index: 150;
    transition: opacity 0.2s ease, transform 0.2s ease;
}
.floating-toolbar button {
    width: 40px;
    height: 40px;
    font-size: 1.1rem;
    padding: 0;
}
.floating-toolbar button.active {
  background-color: var(--primary-color);
  border-color: var(--primary-light);
  color: white;
}
#arrange-btn {
  position: fixed;
  z-index: 1000;
  width: 50px;
  height: 50px;
  font-size: 20px;
  cursor: grab;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--primary-color);
  color: white;
  border: none;
  box-shadow: var(--shadow-strong);
  transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}
#arrange-btn.docked-left {
  left: 0;
  transform: translateY(-50%) translateX(-60%);
}
#arrange-btn.docked-right {
  right: 0;
  transform: translateY(-50%) translateX(60%);
}
#arrange-btn:hover {
  transform: translateY(-50%) translateX(0);
}
#arrange-btn.is-dragging {
  cursor: grabbing;
  transition: none;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.5);
}
/* --- General Controls: Buttons, Inputs, Switches --- */
button,
.btn-like {
  padding: 10px;
  border: 1px solid var(--border-color);
  background-color: var(--background-light);
  color: var(--text-normal);
  border-radius: var(--button-radius);
  cursor: pointer;
  text-align: center;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
button:hover,
.btn-like:hover {
  background-color: #525960;
  border-color: #7b848c;
}
button:active,
.btn-like:active {
  background-color: #3e444a;
}
button:disabled {
  background-color: rgba(0, 0, 0, 0.2);
  color: #888;
  border-color: transparent;
  cursor: not-allowed;
}
button:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
  box-shadow: 0 0 0 0 rgba(38, 143, 255, 0.5);
}
.tool-btn {
  width: 48px;
  height: 48px;
  font-size: 1.25rem;
  border-radius: var(--button-radius);
  background-color: var(--background-light);
  border: 1px solid var(--border-color);
   /* added responsive scaling */
  width: clamp(40px, 10vw, 48px);
  height: clamp(40px, 10vw, 48px);
  font-size: clamp(1.1rem, 4vw, 1.25rem);
}
.tool-btn.active {
  background-color: var(--primary-color);
  border-color: var(--primary-light);
  color: white;
  box-shadow: 0 0 15px rgba(0, 123, 255, 0.4);
}
.tool-selection {
  display: flex;
  gap: 12px;
  justify-content: center;
  align-items: center;
  padding: 10px 0;
  flex-wrap: wrap;
}
.file-operations,
.history-actions {
  display: flex;
  gap: 10px;
}
.file-operations button {
  flex: 1;
  flex-direction: column;
}
.file-operations i {
  margin-bottom: 0.25rem;
  font-size: 1.2rem;
}
.history-actions button {
  font-size: 1.25rem;
  flex: 1;
}
.model-switch-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 8px 0;
  margin: -4px 0;
}
.model-label {
  font-weight: 500;
  font-size: 14px;
  opacity: 0.9;
}
.switch {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 28px;
  cursor: pointer;
  margin: 0;
  padding: 0;
  border: none;
  background: none;
}
.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}
.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--background-light);
  transition: 0.3s;
}
.slider:before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  transition: 0.3s;
}
input:checked + .slider {
  background-color: var(--primary-color);
}
input:focus-visible + .slider {
  box-shadow:
    0 0 0 2px var(--background-dark),
    0 0 0 4px var(--primary-color);
}
input:checked + .slider:before {
  transform: translateX(22px);
}
.slider.round {
  border-radius: 28px;
}
.slider.round:before {
  border-radius: 50%;
}
input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  background: transparent;
}
input[type="range"]::-webkit-slider-runnable-track {
  height: 4px;
  background: var(--background-dark);
  border-radius: 5px;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  height: 16px;
  width: 16px;
  background: var(--text-normal);
  border-radius: 50%;
  border: 2px solid var(--primary-color);
  margin-top: -6px;
  cursor: pointer;
  transition: transform var(--transition-fast);
}
input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}
.value-input {
  width: 45px;
  background-color: var(--background-light);
  border: 1px solid var(--border-color);
  border-radius: var(--button-radius);
  color: var(--text-bright);
  text-align: center;
  font-weight: 600;
  padding: 2px 4px;
  -moz-appearance: textfield;
  -webkit-user-select: text;
  -ms-user-select: text;
  user-select: text;
}
.value-input::-webkit-outer-spin-button,
.value-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.value-input:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 1px;
}
.tool-option-group .control-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}
/* Gradient Tool Styles */
#gradient-control label {
    text-align: center;
    margin-bottom: 8px;
}
.gradient-color-selectors {
    display: flex;
    align-items: center;
    justify-content: space-around;
    gap: 10px;
}
.gradient-color-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    padding: 4px;
    border-radius: var(--button-radius);
    border: 2px solid transparent;
    transition: all var(--transition-fast);
}
.gradient-color-box .gradient-label {
    font-size: 13px;
    margin: 0 0 4px 0;
    font-weight: 500;
}
.gradient-color-box .gradient-preview {
    width: 40px;
    height: 25px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}
.gradient-color-box.active {
    border-color: var(--primary-color);
    background-color: var(--background-light);
}
#gradient-swap-btn {
    background: none;
    border: 1px solid var(--border-color);
    padding: 8px;
    border-radius: 50%;
    line-height: 1;
}
#gradient-swap-btn:hover {
    background-color: var(--background-light);
}
/* Text Tool Styles */
#text-tool-options {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.text-tool-input {
    width: 100%;
    background-color: var(--background-medium);
    border: 1px solid var(--border-color);
    border-radius: var(--button-radius);
    color: var(--text-bright);
    padding: 10px 12px;
    font-family: inherit;
    font-size: 1rem;
}
.text-tool-select {
    width: 100%;
    background-color: var(--background-light);
    border: 1px solid var(--border-color);
    border-radius: var(--button-radius);
    color: var(--text-bright);
    padding: 6px 8px;
    font-family: inherit;
    font-size: 0.9rem;
    -webkit-user-select: text;
    -ms-user-select: text;
    user-select: text;
    cursor: pointer;
}
.text-tool-input:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 1px;
    border-color: var(--primary-color);
}
.text-tool-select:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 1px;
}
.form-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    margin-top: 0.5rem;
}
.forgot-password-link,
#auth-switch-link {
    color: var(--primary-light);
    text-decoration: none;
    font-size: 0.9rem;
    white-space: nowrap;
    transition: color 0.2s;
}
.forgot-password-link:hover,
#auth-switch-link:hover {
    color: var(--accent-color);
}
.auth-separator {
    text-align: center;
    margin: 1.5rem 0;
    color: var(--text-muted);
    position: relative;
}
.auth-separator::before,
.auth-separator::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 40%;
    height: 1px;
    background-color: var(--border-color);
}
.auth-separator::before {
    left: 0;
}
.auth-separator::after {
    right: 0;
}
.auth-oauth-button {
    width: 100%;
    justify-content: center;
    background-color: #28a745;
    color: white;
    padding: 10px;
}
.auth-oauth-button:hover {
    background-color: #218838;
}
.form-actions button {
    min-width: 120px;
    padding: 10px 15px;
}
#font-size-input {
    width: 50px;
}
/* --- Editor Viewport & Canvases --- */
.editor-viewport {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  cursor: grab;
  z-index: 1;
  background-color: var(--checkerboard-color-1);
  background-image:
    linear-gradient(45deg, var(--checkerboard-color-2) 25%, transparent 25%),
    linear-gradient(-45deg, var(--checkerboard-color-2) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--checkerboard-color-2) 75%),
    linear-gradient(-45deg, transparent 75%, var(--checkerboard-color-2) 75%);
  background-size: var(--checkerboard-size) var(--checkerboard-size);
  background-position:
    0 0,
    0 calc(var(--checkerboard-size) / 2),
    calc(var(--checkerboard-size) / 2) calc(var(--checkerboard-size) * -1 / 2),
    0 0;
  touch-action: none;
}
.editor-viewport.is-panning {
  cursor: grabbing;
}
.editor-viewport.selection-active-move {
    cursor: move;
}
#editor-canvas,
#preview-canvas,
#overlay-canvas,
#selection-canvas {
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  width: auto;
  height: auto;
  image-rendering: -moz-crisp-edges;
  image-rendering: -webkit-crisp-edges;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  transform-origin: 0 0;
  will-change: transform;
}
#editor-canvas {
  outline: 1px dashed rgba(255, 255, 255, 0.2);
}
#overlay-canvas {
  pointer-events: none;
  z-index: 5;
  opacity: 0.2;
}
#selection-canvas {
  pointer-events: none;
  z-index: 7;
}
#preview-canvas {
  pointer-events: none;
  z-index: 10;
}
/* --- Floating Panels System (AdminLTE Card Style) --- */
.panels-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 100;
  pointer-events: none;
}
.floating-panel {
  position: absolute;
  background: var(--background-dark);
  border: 1px solid #1f2d3d;
  border-radius: var(--panel-radius);
  box-shadow: var(--shadow-strong);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition:
    box-shadow var(--transition-fast),
    opacity var(--transition-fast);
  pointer-events: all;
  min-width: 240px;
  max-width: 98vw;
  max-height: 95vh;
  transform-origin: center center;
}
.panel-active {
  border: 1px solid var(--primary-color);
  z-index: 101;
}
.floating-panel.is-dragging {
  transition: none !important;
  opacity: 0.9;
}
.panel-header {
  padding: 0.75rem 1.25rem;
  cursor: move;
  border-bottom: 1px solid #1f2d3d;
  font-weight: 600;
  flex-shrink: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: clamp(1rem, 2vw, 1.1rem);
  padding: clamp(0.6rem, 2vw, 1rem) clamp(1rem, 2.5vw, 1.25rem);
}
.panel-header-btn {
  padding: 4px 8px;
  margin-left: 8px;
  font-size: 1rem;
  line-height: 1;
  background-color: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--button-radius);
  color: var(--text-normal);
  cursor: pointer;
  transition:
    background-color var(--transition-fast),
    border-color var(--transition-fast);
}
.panel-header-btn:hover {
  background-color: rgba(255, 255, 255, 0.1);
}
.panel-header-btn:active {
  background-color: rgba(255, 255, 255, 0.05);
}
/* [OPTIMIZED] Remove scrolling from panel body */
.panel-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-content: flex-start;
  padding: clamp(1rem, 2.5vw, 1.25rem);
  gap: clamp(10px, 2vw, 12px);
  height: auto; /* Allow body to grow with content */
}
.floating-panel label,
.floating-panel button,
.floating-panel .model-label {
    font-size: clamp(0.85rem, 1.8vw, 1rem);
}
.panel-header-title-group,
.panel-header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}
#user-status-display {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted);
}
#cloud-sync-status {
    font-size: 1rem;
    cursor: pointer;
    transition: color var(--transition-fast), transform var(--transition-fast);
    display: flex;
    align-items: center;
}
#cloud-sync-status:hover {
    transform: scale(1.1);
}
#cloud-sync-status.dirty i, #mobile-sync-indicator.dirty i {
    color: var(--secondary-light);
}
#cloud-sync-status.syncing i, #mobile-sync-indicator.syncing i {
    color: var(--primary-color);
    animation: fa-spin 1s linear infinite;
}
#cloud-sync-status.synced i, #mobile-sync-indicator.synced i {
    color: var(--accent-color);
}
#cloud-sync-status.error i, #mobile-sync-indicator.error i,
#cloud-sync-status.unverified i, #mobile-sync-indicator.unverified i {
    color: #dc3545;
}
.panel-resizer {
  display: none;
}
#panel-viewer .panel-body {
  padding: 0;
  background: var(--background-light);
  flex-direction: column;
}
.viewer-container {
  width: 100%;
  height: auto;
  flex-grow: 1;
  min-height: 0;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
#skin-viewer-canvas {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
}
#tool-tabs {
  display: flex;
  gap: 6px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 10px;
}
#tool-tabs .tab-btn {
  flex: 1;
}
#tool-content .tab-pane {
  display: none;
}
#tool-content .tab-pane.active {
  display: block;
}
/* --- Color Palette Panel --- */
label {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 4px;
  display: block;
  opacity: 0.8;
}
#current-color-preview-container {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  padding: 10px;
  background-color: var(--background-light);
  border-radius: var(--button-radius);
}
#current-color-preview {
  width: 36px;
  height: 36px;
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
}
#palette-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
}
.tab-btn {
  padding: 6px 12px;
  font-size: 13px;
  background-color: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  border-radius: 16px;
}
.tab-btn:hover {
  background-color: rgba(255, 255, 255, 0.05);
}
.tab-btn.active {
  background-color: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}
#edit-my-colors-btn {
  margin-left: auto;
  padding: 4px 10px;
  font-size: 1rem;
}
/* [OPTIMIZED] Remove scrolling from palette content */
#palette-content {
  padding: 10px 4px;
  height: auto;
}
.tab-pane {
  display: none;
  flex-wrap: wrap;
  gap: 8px;
}
.tab-pane.active {
  display: flex;
}
.color-swatch {
  width: 30px;
  height: 30px;
  border-radius: var(--button-radius);
  border: 2px solid transparent;
  transition: all var(--transition-fast);
}
.active-swatch {
  border-color: var(--primary-light) !important;
  transform: scale(1.1);
  box-shadow: 0 0 10px rgba(0, 123, 255, 0.5);
}
.tab-pane.edit-mode .color-swatch {
  cursor: pointer;
  animation: wiggle 0.7s ease-in-out infinite;
}
@keyframes wiggle {
  0%,
  100% {
    transform: rotate(-2deg);
  }
  50% {
    transform: rotate(2deg);
  }
}
/* --- History & Overlay Panels --- */
/* [OPTIMIZED] Remove scrolling from history log */
#history-log {
  max-height: 100px; /* 您可以根据喜好调整这个最大高度 */
  overflow-y: auto;
}
.history-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px;
  border-radius: 4px;
  margin-bottom: 2px;
  transition:
    background-color var(--transition-fast),
    box-shadow var(--transition-fast);
}
.history-item:hover {
  background-color: rgba(255, 255, 255, 0.05);
}
.history-item.active {
  background-color: rgba(0, 123, 255, 0.15);
  box-shadow: inset 3px 0 0 0 var(--primary-color);
}
.history-item-preview {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  border: 1px solid rgba(0, 0, 0, 0.2);
}
.overlay-control {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 0;
}
.overlay-control .model-label {
  margin: 0;
  font-weight: normal;
  font-size: 1rem;
}
.overlay-control .switch {
  flex-shrink: 0;
}
/* --- Maximized Preview Mode --- */
body.preview-maximized-mode .editor-viewport {
  cursor: default;
  background-image: none;
  background-color: var(--background-dark);
}
body.preview-maximized-mode #panel-viewer .panel-body {
  padding: 0;
  overflow: hidden;
  background-color: var(--background-medium);
  background-image: linear-gradient(
      45deg,
      var(--background-light) 25%,
      transparent 25%
    ),
    linear-gradient(-45deg, var(--background-light) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--background-light) 75%),
    linear-gradient(-45deg, transparent 75%, var(--background-light) 75%);
  background-size: 20px 20px;
  background-position:
    0 0,
    0 10px,
    10px -10px,
    -10px 0px;
}
body.preview-maximized-mode .editor-viewport > #editor-canvas,
body.preview-maximized-mode .editor-viewport > #preview-canvas,
body.preview-maximized-mode .editor-viewport > #overlay-canvas {
  display: none;
}
#canvas-preview-image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  image-rendering: pixelated;
  background-color: transparent;
}
/* --- Context Menus --- */
.context-menu {
  display: none;
  position: absolute;
  z-index: 1500;
  background-color: var(--background-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--button-radius);
  box-shadow: var(--shadow-strong);
  padding: 6px;
  min-width: 180px;
}
.context-menu-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0.25rem 1rem;
  cursor: pointer;
  border-radius: 4px;
  font-size: 14px;
  transition: background-color var(--transition-fast);
  color: var(--text-normal);
}
.context-menu-item.has-control {
    justify-content: space-between;
    cursor: default;
}
.context-menu-item.has-control .switch {
    transform: scale(0.8);
}
.context-menu-item.has-control label {
    cursor: pointer;
}
.context-menu-item.has-control:hover {
    background-color: var(--background-dark);
}
.context-menu-item:hover {
  background-color: var(--background-light);
}
.context-menu-item i {
  width: 1.25em;
  text-align: center;
}
/* --- HSB Context Menu Styles --- */
#hsb-menu {
    min-width: 320px;
    padding: 0;
}
.context-menu-header {
    padding: 0.75rem 1rem;
    font-weight: 600;
    border-bottom: 1px solid var(--border-color);
}
.context-menu-body {
    padding: 1rem;
}
.context-menu-footer {
    padding: 0.75rem 1rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}
.context-menu-footer button {
    padding: 6px 16px;
    font-weight: 600;
}
.hsb-slider-group {
    display: grid;
    grid-template-columns: 70px 1fr 40px;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
}
.hsb-slider-group:last-child {
    margin-bottom: 0;
}
.hsb-slider-group label {
    font-weight: 500;
    font-size: 0.9rem;
    margin: 0;
}
.hsb-slider-group span {
    text-align: right;
    font-weight: 600;
    font-family: monospace;
    font-size: 1rem;
    color: var(--text-bright);
}
/* --- Welcome & Tutorial Modals (AdminLTE style) --- */
.welcome-modal-overlay,
#tutorial-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 3000;
  backdrop-filter: none;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}
.welcome-modal-overlay.visible,
#tutorial-overlay.visible {
  opacity: 1;
  pointer-events: auto;
}
#welcome-modal,
#auth-modal,
#profile-modal,
#force-activation-modal,
#force-password-change-modal,
#delete-account-modal,
#force-logout-alert-modal,
#mobile-notice-modal {
  background: var(--background-dark);
  border: 1px solid rgba(0, 0, 0, 0.2);
  border-radius: 0.3rem;
  box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.5);
  width: 90%;
  height: auto;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: translateY(-50px);
  opacity: 0;
  transition: all 0.3s ease-out;
  color: var(--text-normal);
}
#auth-modal,
#profile-modal,
#force-activation-modal,
#force-password-change-modal,
#delete-account-modal,
#force-logout-alert-modal {
    max-width: 480px;
}
#welcome-modal {
  max-width: 640px;
  max-height: 90vh;
}
.welcome-modal-overlay.visible #welcome-modal,
.welcome-modal-overlay.visible #auth-modal,
.welcome-modal-overlay.visible #profile-modal,
.welcome-modal-overlay.visible #force-activation-modal,
.welcome-modal-overlay.visible #force-password-change-modal,
.welcome-modal-overlay.visible #delete-account-modal,
.welcome-modal-overlay.visible #force-logout-alert-modal,
.welcome-modal-overlay.visible #mobile-notice-modal {
  transform: translateY(0);
  opacity: 1;
}
.modal-header {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
  text-align: left;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-bright);
}
.modal-header h2 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--text-bright);
}
.modal-header .close-btn {
    background: none;
    border: none;
    color: var(--text-bright);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
    padding: 0 5px;
    transition: color 0.2s;
}
.modal-header .close-btn:hover {
    color: var(--primary-light);
}
.modal-content {
  padding: 1.5rem 2rem;
  flex-grow: 1;
  overflow-y: auto;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
#auth-modal .modal-content,
#profile-modal .modal-content,
#force-activation-modal .modal-content,
#force-password-change-modal .modal-content,
#delete-account-modal .modal-content {
    padding: 1.5rem 2rem;
    overflow-y: visible;
}
.form-group {
    margin-bottom: 0;
}
.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-normal);
}
#auth-modal .modal-content .auth-form {
    display: none;
    flex-direction: column;
    gap: 1rem;
}
#auth-modal .modal-content .auth-form.active {
    display: flex;
}
.modal-step {
  opacity: 0;
  transition: opacity var(--transition-normal);
  visibility: hidden;
  display: none;
  flex-direction: column;
  height: 100%;
}
.modal-step.active {
  opacity: 1;
  visibility: visible;
  display: flex;
}
.modal-step p {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-normal);
  margin-bottom: 1.2em;
}
.scrollable-content {
  flex-grow: 1;
  overflow-y: auto;
  border: 1px solid var(--border-color);
  background: var(--background-medium);
  border-radius: var(--button-radius);
  padding: 20px 24px;
  font-size: 0.9rem;
  white-space: pre-wrap;
  line-height: 1.8;
}
.scrollable-content h3 {
  margin-top: 0;
  margin-bottom: 1em;
  color: var(--primary-light);
  font-size: 1.2rem;
}
.scrollable-content h4 {
  margin-top: 1.5em;
  margin-bottom: 0.8em;
  color: var(--text-bright);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.3em;
}
.scrollable-content strong {
  color: var(--text-bright);
  font-weight: 600;
}
#step-3 .choice-container {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  height: 100%;
}
#step-3 .choice-container h3 {
  font-size: 1.4rem;
  color: var(--text-bright);
  margin-top: 0.5em;
  margin-bottom: 0.8em;
}
#step-3 .choice-container p {
  max-width: 80%;
  margin-bottom: 2em;
}
.choice-buttons {
  display: flex;
  flex-direction: column;
  gap: 15px;
  width: 70%;
  max-width: 300px;
}
.choice-buttons button {
  padding: 10px 20px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--button-radius);
  background-color: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}
.choice-buttons button:hover {
  background-color: var(--primary-light);
  border-color: var(--primary-light);
}
.choice-buttons button.secondary {
  background-color: var(--secondary-color);
  border-color: var(--secondary-color);
}
.choice-buttons button.secondary:hover {
  background: var(--secondary-light);
  border-color: var(--secondary-light);
}
.agreement-check {
    margin-top: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}
.agreement-check label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 0;
    font-weight: normal;
}
.agreement-check input[type="checkbox"] {
    margin-right: 0;
}
.modal-footer {
  padding: 0.75rem 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.modal-footer button {
    padding: 8px 16px;
    font-size: 0.95rem;
}
.modal-footer button.secondary {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}
.modal-footer button.secondary:hover {
    background: var(--secondary-light);
    border-color: var(--secondary-light);
}
.step-indicator {
  display: flex;
  gap: 8px;
}
.indicator-dot {
  width: 10px;
  height: 10px;
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  transition: all var(--transition-normal);
}
.indicator-dot.active {
  background-color: var(--primary-color);
  transform: scale(1.25);
  box-shadow: 0 0 8px rgba(0, 123, 255, 0.5);
}
.footer-buttons {
  display: flex;
  gap: 12px;
}
#modal-prev-btn,
#modal-next-btn {
  min-width: 120px;
  font-weight: 600;
  border-radius: var(--button-radius);
  padding: 10px 20px;
  font-size: 1rem;
}
#modal-prev-btn.secondary {
  background: var(--secondary-color);
  border-color: var(--secondary-color);
}
#modal-prev-btn.secondary:hover {
  background: var(--secondary-light);
  border-color: var(--secondary-light);
}
#modal-next-btn {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}
#modal-next-btn:hover {
  background-color: var(--primary-light);
  border-color: var(--primary-light);
}
#modal-next-btn:disabled {
  background-color: #555 !important;
  border-color: #555 !important;
  color: #999;
  cursor: not-allowed;
}
#tutorial-overlay {
  flex-direction: column;
  padding: 20px;
}
.tutorial-header-bar {
  background: var(--background-dark);
  border: 1px solid var(--border-color);
  border-bottom: none;
  border-radius: var(--panel-radius) var(--panel-radius) 0 0;
  box-shadow: var(--shadow-strong);
  width: 90%;
  max-width: 640px;
  padding: 18px 25px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: white;
  flex-shrink: 0;
}
.tutorial-header-bar h2 {
  margin: 0;
  font-size: 1.4rem;
  font-weight: 600;
}
#close-tutorial-btn {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #eee;
  padding: 6px 12px;
  font-size: 1rem;
  border-radius: var(--button-radius);
  cursor: pointer;
  transition: all 0.2s;
}
#close-tutorial-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.3);
}
#tutorial-overlay-content {
  background: var(--background-dark);
  border: 1px solid var(--border-color);
  border-top: none;
  border-radius: 0 0 var(--panel-radius) var(--panel-radius);
  width: 90%;
  max-width: 640px;
  height: 70%;
  max-height: 600px;
  overflow-y: auto;
  padding: 20px 40px;
}
#tutorial-overlay-content .detailed-tutorial {
  width: 100%;
  max-width: 520px;
  margin: 0 auto;
  text-align: left;
}
#tutorial-overlay-content .tutorial-section {
  margin-bottom: 1em;
}
#tutorial-overlay-content .tutorial-header {
  font-size: 2.5rem;
  text-align: center;
  margin: 0.5em 0 0.1em;
}
#tutorial-overlay-content .tutorial-section h3 {
  text-align: center;
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-bright);
  margin-bottom: 1em;
}
#tutorial-overlay-content .tutorial-section p,
#tutorial-overlay-content .tutorial-section li {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-normal);
}
#tutorial-overlay-content .tutorial-section p {
  margin-bottom: 1.5em;
  text-align: center;
}
#tutorial-overlay-content .tutorial-section ul {
  list-style: none;
  padding-left: 0;
}
#tutorial-overlay-content .tutorial-section li {
  background: rgba(0, 0, 0, 0.15);
  border-left: 3px solid var(--primary-color);
  padding: 12px 16px;
  margin-bottom: 0.8em;
  border-radius: 0 8px 8px 0;
  text-align: left;
}
#tutorial-overlay-content .tutorial-section strong {
  color: var(--text-bright);
  font-weight: 600;
}
#tutorial-overlay-content .tutorial-section hr {
  border: none;
  height: 1px;
  background-color: var(--border-color);
  margin: 2.5em 0;
}
.scrollable-content::-webkit-scrollbar,
#tutorial-overlay-content::-webkit-scrollbar,
.panels-container::-webkit-scrollbar {
  width: 8px;
}
.scrollable-content::-webkit-scrollbar-track,
#tutorial-overlay-content::-webkit-scrollbar-track,
.panels-container::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.1);
}
.scrollable-content::-webkit-scrollbar-thumb,
#tutorial-overlay-content::-webkit-scrollbar-thumb,
.panels-container::-webkit-scrollbar-thumb {
  background-color: rgba(255, 255, 255, 0.25);
  border-radius: 8px;
  border: 2px solid transparent;
  background-clip: content-box;
}
.scrollable-content::-webkit-scrollbar-thumb:hover,
#tutorial-overlay-content::-webkit-scrollbar-thumb:hover,
.panels-container::-webkit-scrollbar-thumb:hover {
  background-color: rgba(255, 255, 255, 0.4);
}
.btn i.fas,
.btn i.far,
.btn i.fab {
  line-height: 1;
}
.file-operations button,
.history-actions button {
  font-size: 1rem;
}
.panel-resize-ghost {
  position: absolute;
  background: rgba(0, 123, 255, 0.1);
  border: 2px dashed var(--primary-color);
  border-radius: var(--panel-radius);
  z-index: 200;
  pointer-events: none;
  box-sizing: border-box;
  transition:
    width 0.1s ease-out,
    height 0.1s ease-out,
    top 0.1s ease-out,
    left 0.1s ease-out;
}
#parts-visibility-menu {
    padding: 10px;
    min-width: 240px;
}
.visibility-table {
    width: 100%;
    border-collapse: collapse;
}
.visibility-table th,
.visibility-table td {
    padding: 6px 8px;
    text-align: center;
    vertical-align: middle;
    white-space: nowrap;
}
.visibility-table thead th {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}
.visibility-table tbody th {
    text-align: left;
    font-weight: 600;
    color: var(--text-normal);
    font-size: 0.95rem;
}
.visibility-table tbody tr:not(:last-child) td,
.visibility-table tbody tr:not(:last-child) th {
    border-bottom: 1px solid var(--background-light);
}
.visibility-table .switch {
    display: inline-flex;
    vertical-align: middle;
}
.copyright-footer {
  position: fixed;
  bottom: 5px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 11px;
  color: var(--text-muted);
  z-index: 50;
  opacity: 0.8;
  text-align: center;
  white-space: nowrap;
  pointer-events: all;
}
.copyright-footer a {
  color: inherit;
  text-decoration: none;
}
.copyright-footer a:hover {
  color: var(--text-normal);
  text-decoration: underline;
}
#unverified-banner {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: #337ab7;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px 20px;
    z-index: 2500;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    text-align: center;
    gap: 20px;
}
.banner-text {
    font-weight: 500;
}
.banner-text i {
    margin-right: 8px;
}
.banner-button {
    background-color: rgba(255, 255, 255, 0.2);
    border: 1px solid white;
    color: white;
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
    white-space: nowrap;
    transition: background-color 0.2s;
}
.banner-button:hover {
    background-color: rgba(255, 255, 255, 0.3);
}
.banner-close-button {
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    font-weight: bold;
    cursor: pointer;
    padding: 0 10px;
    line-height: 1;
    opacity: 0.7;
    transition: opacity 0.2s;
}
.banner-close-button:hover {
    opacity: 1;
}
@media (max-width: 500px) {
    #welcome-modal, #auth-modal, #profile-modal,
    #force-activation-modal, #force-password-change-modal, #delete-account-modal,
    #mobile-notice-modal {
        margin: 10px;
        width: calc(100% - 20px);
        max-height: 95vh;
    }
    .modal-content {
        padding: 1rem;
        gap: 1rem;
    }
    .form-group label {
        font-size: 0.9rem;
    }
    .text-tool-input {
        padding: 8px 10px;
        font-size: 0.9rem;
    }
    .modal-footer {
        flex-direction: column;
        gap: 10px;
        padding: 0.75rem;
    }
    .modal-footer button {
        width: 100%;
        font-size: 0.9rem;
    }
    .auth-separator {
        margin: 1rem 0;
    }
    .auth-separator::before, .auth-separator::after {
        width: 35%;
    }
}
.profile-info-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 12px 16px;
    font-size: 1rem;
    align-items: center;
    margin-bottom: 1.5rem;
}
.profile-info-label {
    font-weight: 600;
    color: var(--text-muted);
    text-align: right;
}
.profile-info-value {
    font-weight: 500;
    color: var(--text-bright);
    word-break: break-all;
}
#force-activation-modal {
    max-width: 420px;
    text-align: center;
}
#force-activation-modal .modal-content {
    padding: 1.5rem;
    gap: 1rem;
}
#force-activation-modal .modal-content p {
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 0;
}
#force-activation-modal .modal-header,
#force-activation-modal .modal-footer {
    justify-content: center;
}
#force-activation-modal .btn-like {
    margin-top: 0;
}
#force-password-change-modal {
    max-width: 480px;
    text-align: center;
}
#force-password-change-modal .modal-content {
    padding: 1.5rem;
    gap: 1rem;
}
#force-password-change-modal .modal-content p {
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 0;
}
#force-password-change-modal .modal-header,
#force-password-change-modal .modal-footer {
    justify-content: center;
}
#force-password-change-modal .btn-like {
    margin-top: 1.5rem;
}
#force-password-change-modal .form-group label {
    text-align: left;
}
#delete-account-modal .modal-header {
    background-color: #dc3545;
    color: white;
    border-color: #c82333;
}
#delete-account-modal .modal-header .close-btn {
    color: white;
}
#delete-account-modal .modal-content {
    padding: 1.5rem 2rem;
    gap: 1rem;
}
#delete-account-modal .modal-content p {
    margin-bottom: 0;
    line-height: 1.6;
}
#delete-account-modal .scrollable-content {
    height: 150px;
    font-size: 0.85rem;
    line-height: 1.7;
    padding: 15px;
}
.auth-form {
    display: none;
    flex-direction: column;
    gap: 1rem;
}
.auth-form.active {
    display: flex;
}
.delete-button {
  background-color: #dc3545;
  border-color: #c82333;
  color: white;
}
.delete-button:hover {
  background-color: #c82333;
  border-color: #bd2130;
}
#force-logout-alert-header {
    background-color: #f39c12;
    color: white;
    border-color: #e67e22;
}
#force-logout-alert-header i {
    margin-right: 10px;
}
#force-logout-alert-modal .btn-like {
    background-color: var(--primary-color);
    color: white;
    min-width: 150px;
}
#force-logout-alert-modal .btn-like:hover {
    background-color: var(--primary-light);
}
/* --- Mobile Responsive Styles --- */
#mobile-ui-container {
    display: none; /* Hidden by default */
    position: fixed;
    top: 0;
    left: 0;
    width: 100dvw;
    height: 100dvh;
    height: calc(var(--real-vh, 1vh) * 100);
    flex-direction: column;
}
#mobile-top-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 55px;
    background: var(--background-dark);
    padding: 0 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 1001;
    box-shadow: var(--shadow-soft);
    border-bottom: 1px solid #1f2d3d;
}
#mobile-top-bar button {
    height: 40px;
    width: 40px;
    padding: 0;
    border: none;
    background: transparent;
    font-size: 1.25rem;
    color: var(--text-normal);
}
#mobile-top-bar button.active {
    color: var(--primary-color);
    background-color: rgba(0, 123, 255, 0.1);
    border-radius: var(--button-radius);
}
#mobile-color-btn {
    display: flex;
    align-items: center;
    justify-content: center;
}
#mobile-color-indicator {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid var(--text-muted);
}
.mobile-history-actions {
    display: flex;
    gap: 5px;
}
#mobile-user-status {
    flex-grow: 1;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 8px;
    padding-right: 10px;
    font-size: 1rem;
    color: var(--text-muted);
}
#mobile-panel-overlay {
    position: fixed;
    top: 55px;
    left: 0;
    width: 100%;
    height: calc(100% - 55px);
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}
#mobile-panel-overlay.visible {
    opacity: 1;
    visibility: visible;
}
.mobile-panel {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    max-height: 70%;
    background: var(--background-dark);
    border-top: 1px solid var(--border-color);
    border-radius: 16px 16px 0 0;
    transform: translateY(100%);
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
}
.mobile-panel.active {
    transform: translateY(0);
}
.mobile-panel-header {
    padding: 1rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-bright);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}
.close-panel-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
}
.mobile-panel-content {
    padding: 1rem;
    overflow-y: auto;
    flex-grow: 1;
}
/* --- Media Queries --- */
/* 当屏幕宽度大于 768px 时 (平板和桌面) */
@media (min-width: 769px) {
  /* 隐藏移动端专属容器 */
  #mobile-ui-container {
    display: none !important;
  }
  /* 确保桌面端浮动面板和视口可以交互 */
  .panels-container {
     pointer-events: none;
  }
   .floating-panel {
     pointer-events: all;
  }
}
/* 当屏幕宽度小于等于 768px 时 (移动端) */
@media (max-width: 768px) {
    /* 隐藏所有桌面浮动面板及其容器 */
    .panels-container {
        display: none !important;
    }
    /* 隐藏桌面专属按钮和版权信息 */
    #arrange-btn,
    .copyright-footer {
        display: none !important;
    }
    /* 显示移动端主容器 */
    #mobile-ui-container {
        display: flex;
    }
    /* 移动端画布容器样式调整 */
    #mobile-ui-container > .editor-viewport {
        position: relative;
        flex-grow: 1;
        width: 100%;
        height: auto;
        margin-top: 55px; /* 避开顶部工具栏 */
        background-color: var(--background-medium);
        cursor: default;
    }
    /* 移动端工具样式微调 */
    .tool-selection { gap: 8px; }
    .tool-btn { width: 44px; height: 44px; font-size: 1.1rem; }
    .file-operations { flex-direction: row; flex-wrap: wrap; }
    .file-operations button { flex-grow: 1; flex-basis: 40%; }
    #palette-tabs .tab-btn { padding: 5px 10px; font-size: 12px; }
}
@media (max-width: 400px) {
    #mobile-top-bar { gap: 0; padding: 0 5px; }
    #mobile-top-bar button { width: 38px; }
    #mobile-user-status { display: none; }
}
#mobile-notice-modal .btn-like {
    min-width: 150px;
    background-color: var(--primary-color);
    color: white;
}
#mobile-notice-modal .btn-like:hover {
    background-color: var(--primary-light);
}