@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+TC:wght@300;400;500;600&display=swap');

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

:root {
  --bg: #f5f5f0;
  --surface: #ffffff;
  --accent: #8dd1ff;
  --accent-dark: #5bb8f5;
  --accent-light: #e8f5ff;
  --text: #1a1a1a;
  --text-heading: #555555;
  --muted: #9a9a9a;
  --border: #e8e8e4;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.07), 0 4px 12px rgba(0, 0, 0, 0.05);
}

body {
  font-family: 'Noto Sans TC', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

header {
  width: 100%;
  padding: 14px 28px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
}

header .logo {
  width: 28px;
  height: 28px;
  background: var(--accent);
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
}

header .logo svg {
  color: #fff;
}

header h1 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
}

header p {
  font-size: 0.75rem;
  color: var(--muted);
  margin-left: auto;
}

.workspace {
  display: flex;
  width: 100%;
  max-width: 1400px;
  flex: 1;
  padding: 20px 16px;
  gap: 16px;
  align-items: flex-start;
}

.panel {
  width: 268px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.panel-right {
  width: 252px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  box-shadow: var(--shadow);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.card-header h2 {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-heading);
}

.card-header.collapsible {
  cursor: pointer;
  user-select: none;
}

.card-header.collapsible:hover h2 {
  color: var(--text);
}

.collapse-icon {
  font-size: 0.65rem;
  color: var(--muted);
  transition: transform 0.2s;
}

.card-header.collapsible.collapsed .collapse-icon {
  transform: rotate(-90deg);
}

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

.upload-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  width: 100%;
  padding: 9px 12px;
  border-radius: 7px;
  border: 1.5px dashed var(--border);
  background: var(--bg);
  color: var(--muted);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.18s;
  font-family: inherit;
}

.upload-btn:hover {
  border-color: var(--accent);
  color: var(--accent-dark);
  background: var(--accent-light);
}

#custom-size-area {
  display: none;
}

.size-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
}

.size-input {
  width: 58px;
  padding: 5px 6px;
  border-radius: 6px;
  border: 1.5px solid var(--border);
  background: var(--bg);
  font-size: 0.78rem;
  font-family: inherit;
  color: var(--text);
  text-align: center;
  outline: none;
}

.size-input:focus {
  border-color: var(--accent);
}

.size-sep {
  font-size: 0.75rem;
  color: var(--muted);
}

.size-unit {
  font-size: 0.7rem;
  color: var(--muted);
}

.size-apply-btn {
  flex: 1;
  padding: 5px 6px;
  border-radius: 6px;
  border: 1.5px solid var(--accent);
  background: var(--accent-light);
  color: var(--accent-dark);
  font-size: 0.73rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.15s;
  white-space: nowrap;
}

.size-apply-btn:hover {
  background: var(--accent);
  color: #fff;
}

.layer-list {
  margin-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.layer-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 8px;
  border-radius: 6px;
  border: 1.5px solid var(--border);
  background: var(--bg);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  user-select: none;
}

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

.layer-item.selected {
  border-color: var(--accent-dark);
  background: var(--accent-light);
}

.layer-item.dragging-source {
  opacity: 0.35;
}

.layer-item.drag-over {
  border-color: var(--accent-dark);
  border-style: dashed;
  background: var(--accent-light);
}

.drag-handle {
  cursor: grab;
  color: var(--muted);
  font-size: 13px;
  padding: 0 2px;
  flex-shrink: 0;
}

.drag-handle:active {
  cursor: grabbing;
}

.layer-thumb {
  width: 28px;
  height: 28px;
  border-radius: 4px;
  object-fit: cover;
  flex-shrink: 0;
  border: 1px solid var(--border);
  background: #eee;
}

.layer-info {
  flex: 1;
  min-width: 0;
}

.layer-name {
  font-size: 0.7rem;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.layer-index {
  font-size: 0.6rem;
  color: var(--muted);
}

.layer-actions {
  display: flex;
  align-items: center;
  gap: 3px;
  flex-shrink: 0;
}

.layer-btn {
  width: 20px;
  height: 20px;
  border-radius: 4px;
  border: none;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 11px;
  transition: background 0.15s, color 0.15s;
  padding: 0;
}

.layer-btn:hover {
  background: #f0f0f0;
  color: var(--text);
}

.layer-btn.del:hover {
  background: #fde8e8;
  color: #e53935;
}

.slider-row {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-top: 2px;
  padding-bottom: 4px;
}

.slider-label {
  font-size: 0.73rem;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.slider-label span {
  color: var(--text);
  font-weight: 600;
  font-size: 0.73rem;
  background: var(--bg);
  padding: 1px 6px;
  border-radius: 4px;
  border: 1px solid var(--border);
  min-width: 50px;
  text-align: center;
}

input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 3px;
  border-radius: 3px;
  background: var(--border);
  outline: none;
  cursor: pointer;
  display: block;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid #fff;
  box-shadow: 0 1px 4px rgba(141, 209, 255, 0.4);
  cursor: pointer;
  transition: transform 0.15s;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.rot-btns {
  display: flex;
  gap: 5px;
  margin-top: 6px;
}

.rot-btn {
  flex: 1;
  padding: 5px 0;
  border-radius: 6px;
  border: 1.5px solid var(--border);
  background: var(--bg);
  color: var(--muted);
  font-size: 0.75rem;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.15s;
}

.rot-btn:hover {
  border-color: var(--accent);
  color: var(--accent-dark);
  background: var(--accent-light);
}

.preset-row {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
}

.preset-swatch {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  border: 2px solid var(--border);
  cursor: pointer;
  transition: border-color 0.15s, transform 0.12s;
  flex-shrink: 0;
}

.preset-swatch:hover {
  transform: scale(1.1);
}

.preset-swatch.active {
  border-color: var(--accent-dark) !important;
  box-shadow: 0 0 0 2px var(--accent-light);
}

.preset-swatch.transparent-swatch {
  background: repeating-conic-gradient(#ccc 0% 25%, #fff 0% 50%) 0 0 / 10px 10px;
}

.hsb-panel {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.hsb-preview-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
}

.hsb-preview {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  border: 1px solid var(--border);
  flex-shrink: 0;
}

.hsb-hex {
  font-size: 0.72rem;
  color: var(--muted);
  font-family: monospace;
  background: var(--bg);
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid var(--border);
  flex: 1;
  text-align: center;
  letter-spacing: 0.05em;
}

#hue-slider {
  background: linear-gradient(
    to right,
    hsl(0, 100%, 50%),
    hsl(30, 100%, 50%),
    hsl(60, 100%, 50%),
    hsl(90, 100%, 50%),
    hsl(120, 100%, 50%),
    hsl(150, 100%, 50%),
    hsl(180, 100%, 50%),
    hsl(210, 100%, 50%),
    hsl(240, 100%, 50%),
    hsl(270, 100%, 50%),
    hsl(300, 100%, 50%),
    hsl(330, 100%, 50%),
    hsl(360, 100%, 50%)
  );
  height: 8px;
  border-radius: 4px;
}

.format-row {
  display: flex;
  gap: 6px;
  margin-bottom: 10px;
}

.fmt-btn {
  flex: 1;
  padding: 6px 0;
  border-radius: 6px;
  border: 1.5px solid var(--border);
  background: var(--bg);
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.15s;
}

.fmt-btn:hover {
  border-color: var(--accent);
  color: var(--accent-dark);
}

.fmt-btn.active {
  border-color: var(--accent-dark);
  background: var(--accent-light);
  color: var(--accent-dark);
}

.fmt-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

.fmt-note {
  font-size: 0.68rem;
  color: var(--accent-dark);
  margin-bottom: 8px;
  display: none;
}

.fmt-note.visible {
  display: block;
}

.export-btn {
  width: 100%;
  padding: 10px;
  border-radius: 7px;
  border: none;
  background: var(--accent);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.18s, transform 0.15s, box-shadow 0.15s;
  box-shadow: 0 2px 8px rgba(141, 209, 255, 0.35);
}

.export-btn:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(141, 209, 255, 0.45);
}

.export-btn:disabled {
  background: var(--border);
  color: var(--muted);
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.hint {
  font-size: 0.7rem;
  color: var(--muted);
  line-height: 1.6;
  margin-top: 8px;
}

.canvas-wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.canvas-label {
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.06em;
}

#preview-container {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06), 0 8px 24px rgba(0, 0, 0, 0.1);
  background: repeating-conic-gradient(#e8e8e4 0% 25%, #f0f0ec 0% 50%) 0 0 / 14px 14px;
  border: 1px solid var(--border);
  user-select: none;
}

#preview-container.mode-drag {
  cursor: grabbing;
}

#preview-container.mode-grab {
  cursor: grab;
}

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

.bg-img-layer {
  position: absolute;
  transform-origin: center center;
  pointer-events: none;
}

#frame-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: fill;
  pointer-events: none;
}

#select-outline {
  position: absolute;
  pointer-events: none;
  border: 2px solid var(--accent-dark);
  border-radius: 2px;
  box-shadow: 0 0 0 1px rgba(91, 184, 245, 0.25);
  display: none;
  z-index: 98;
  transform-origin: center center;
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 80px 40px;
  color: var(--muted);
  font-size: 0.8rem;
  text-align: center;
}

.empty-state svg {
  opacity: 0.25;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 0.63rem;
  font-weight: 600;
  flex-shrink: 0;
}

.badge-green {
  background: #edfaf4;
  color: #27ae60;
}

.status-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 9px;
}

.status-row .file-name {
  font-size: 0.72rem;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
  min-width: 0;
}

.remove-btn {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #f0f0f0;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  transition: background 0.15s, color 0.15s;
  padding: 0;
  font-size: 10px;
}

.remove-btn:hover {
  background: #fde8e8;
  color: #e53935;
}

.sep {
  height: 1px;
  background: var(--border);
  margin: 10px 0;
}

.text-layer {
  position: absolute;
  transform-origin: center center;
  pointer-events: none;
  white-space: pre;
  line-height: 1.25;
}

.text-input {
  width: 100%;
  padding: 7px 9px;
  border-radius: 7px;
  border: 1.5px solid var(--border);
  background: var(--bg);
  font-size: 0.82rem;
  font-family: inherit;
  color: var(--text);
  outline: none;
  resize: vertical;
  min-height: 60px;
}

.text-input:focus,
.font-select:focus,
.font-search:focus,
.modal-input:focus {
  border-color: var(--accent);
}

.font-select {
  width: 100%;
  padding: 6px 8px;
  border-radius: 6px;
  border: 1.5px solid var(--border);
  background: var(--bg);
  font-size: 0.78rem;
  font-family: inherit;
  color: var(--text);
  outline: none;
  cursor: pointer;
  max-height: 160px;
  margin-top: 4px;
}

.font-loading {
  font-size: 0.68rem;
  color: var(--muted);
  margin-top: 4px;
}

.font-search {
  width: 100%;
  padding: 5px 8px;
  border-radius: 6px;
  border: 1.5px solid var(--border);
  background: var(--bg);
  font-size: 0.75rem;
  font-family: inherit;
  color: var(--text);
  outline: none;
  margin-top: 5px;
}

.text-color-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 2px;
}

.text-color-swatch {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  border: 1.5px solid var(--border);
  cursor: pointer;
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
}

.text-color-swatch input[type="color"] {
  position: absolute;
  inset: -4px;
  width: calc(100% + 8px);
  height: calc(100% + 8px);
  opacity: 0;
  cursor: pointer;
}

.text-color-hex {
  font-size: 0.72rem;
  color: var(--muted);
  font-family: monospace;
  background: var(--bg);
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid var(--border);
  flex: 1;
  text-align: center;
}

.add-text-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  padding: 8px;
  border-radius: 7px;
  border: none;
  background: var(--accent);
  color: #fff;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s;
  margin-top: 10px;
}

.add-text-btn:hover {
  background: var(--accent-dark);
}

.align-btns {
  display: flex;
  gap: 5px;
}

.align-btn {
  flex: 1;
  padding: 5px 0;
  border-radius: 6px;
  border: 1.5px solid var(--border);
  background: var(--bg);
  color: var(--muted);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.align-btn:hover,
.align-panel-btn:hover {
  border-color: var(--accent);
  color: var(--accent-dark);
  background: var(--accent-light);
}

.align-btn.active {
  border-color: var(--accent-dark);
  background: var(--accent-light);
  color: var(--accent-dark);
}

.layer-item.multi-selected {
  border-color: var(--accent-dark);
  background: #f0f8ff;
}

.align-panel-btns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 5px;
}

.align-panel-btn {
  padding: 6px 0;
  border-radius: 6px;
  border: 1.5px solid var(--border);
  background: var(--bg);
  color: var(--muted);
  font-size: 11px;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex-direction: column;
}

.align-panel-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  pointer-events: none;
}

.align-mode-hint {
  font-size: 0.68rem;
  color: var(--muted);
  margin-bottom: 8px;
  min-height: 1.4em;
}

.layer-type-badge {
  font-size: 0.55rem;
  padding: 1px 5px;
  border-radius: 3px;
  font-weight: 700;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}

.badge-img {
  background: #e8f4ff;
  color: #3a8fbf;
}

.badge-text {
  background: #fff0e8;
  color: #c06020;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-overlay.hidden {
  display: none;
}

.modal-box {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.18);
  padding: 24px 26px;
  width: 340px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.modal-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}

.modal-field {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.modal-label {
  font-size: 0.72rem;
  color: var(--muted);
}

.modal-input {
  padding: 7px 10px;
  border-radius: 7px;
  border: 1.5px solid var(--border);
  background: var(--bg);
  font-size: 0.85rem;
  font-family: inherit;
  color: var(--text);
  outline: none;
}

.modal-row {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 4px;
}

.modal-cancel {
  padding: 8px 18px;
  border-radius: 7px;
  border: 1.5px solid var(--border);
  background: var(--bg);
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.15s;
}

.modal-cancel:hover {
  border-color: var(--accent-dark);
  color: var(--text);
}

.modal-confirm {
  padding: 8px 18px;
  border-radius: 7px;
  border: none;
  background: var(--accent);
  color: #fff;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s;
}

.modal-confirm:hover {
  background: var(--accent-dark);
}

#canvas-hidden {
  display: none;
}

.no-select-hint {
  font-size: 0.7rem;
  color: var(--muted);
  text-align: center;
  padding: 6px 0;
}

.small-muted {
  font-size: 0.7rem;
  color: var(--muted);
  margin-bottom: 6px;
}

.size-sep-line {
  margin: 10px 0 8px;
}

.section-gap {
  margin: 8px 0 10px;
}

.section-title {
  margin-bottom: 5px;
}

.align-tip {
  margin-top: 8px;
}

.modal-format-row {
  margin-bottom: 0;
}

.modal-fmt-note {
  margin-top: 6px;
  margin-bottom: 0;
}

@media (max-width: 1100px) {
  .workspace {
    flex-direction: column;
    align-items: stretch;
  }

  .panel,
  .panel-right {
    width: 100%;
  }

  .canvas-wrap {
    order: -1;
  }
}

@media (max-width: 640px) {
  header {
    padding: 12px 16px;
  }

  .workspace {
    padding: 16px 10px;
  }

  .modal-box {
    width: calc(100vw - 24px);
    padding: 18px;
  }
}