@import url('https://fonts.googleapis.com/css2?family=Share+Tech&display=swap');

:root {
  --bg: #ffffff;
  --surface: #ffffff;
  --surface-alt: #eeeeee;
  --surface-raised: #e2e2e2;
  --border: #000000;
  --border-strong: #000000;
  --text: #000000;
  --text-muted: #333333;
  --text-subtle: #666666;
  --btn-bg: #ffffff;
  --input-bg: #ffffff;
  --active-bg: #000000;
  --active-text: #ffffff;
  --radius: 0px;
  --radius-sm: 0px;
  --shadow: 2px 2px 0 #000000;
  --shadow-lg: 4px 4px 0 #000000;
}

[data-theme="dark"] {
  --bg: #121212;
  --surface: #1c1c1c;
  --surface-alt: #242424;
  --surface-raised: #2e2e2e;
  --border: #484848;
  --border-strong: #6e6e6e;
  --text: #d4d4d4;
  --text-muted: #909090;
  --text-subtle: #525252;
  --btn-bg: #1c1c1c;
  --input-bg: #1c1c1c;
  --active-bg: #d4d4d4;
  --active-text: #121212;
  --shadow: 2px 2px 0 #363636;
  --shadow-lg: 4px 4px 0 #363636;
}

[data-theme="dark"] .panel-header {
  background: var(--surface-raised);
  color: var(--text);
  background-image: repeating-linear-gradient(
    to bottom,
    rgba(255,255,255,0) 0px,
    rgba(255,255,255,0) 1px,
    rgba(255,255,255,0.04) 1px,
    rgba(255,255,255,0.04) 2px
  );
}

html {
  font-size: 13px;
}

body {
  font-family: 'Share Tech', sans-serif;
  background-color: #b8b8b8;
  background-image: repeating-conic-gradient(#c4c4c4 0% 25%, #acacac 0% 50%);
  background-size: 2px 2px;
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

[data-theme="dark"] body {
  background-color: #121212;
  background-image: repeating-conic-gradient(#181818 0% 25%, #0c0c0c 0% 50%);
}

::selection {
  background: #000000;
  color: #ffffff;
}

[data-theme="dark"] ::selection {
  background: #ffffff;
  color: #000000;
}

site-header,
site-footer { display: contents; }

.site-header {
  display: flex;
  align-items: center;
  gap: 0;
  padding: 0 0.75rem;
  height: 22px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-logo {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  display: inline-block;
  flex-shrink: 0;
  margin-right: 0.5rem;
  padding: 0 0.3rem;
  line-height: 22px;
  transition: background 0s, color 0s, transform 0.18s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.site-logo:hover {
  background: var(--text);
  color: var(--surface);
}

.site-nav {
  display: flex;
  align-items: stretch;
  gap: 0;
  flex: 1;
  height: 100%;
}

.nav-link {
  font-size: 0.85rem;
  color: var(--text);
  text-decoration: none;
  padding: 0 0.5rem;
  display: flex;
  align-items: center;
  line-height: 1;
  transition: background 0s, color 0s;
}

.nav-link:hover {
  background: var(--text);
  color: var(--surface);
}

.nav-link.active {
  background: var(--text);
  color: var(--surface);
  font-weight: 400;
}

.nav-sep { display: none; }

.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  cursor: pointer;
  font-family: inherit;
  font-size: 0.7rem;
  padding: 1px 5px;
  line-height: 1;
  height: 16px;
  display: flex;
  align-items: center;
  margin-left: auto;
  flex-shrink: 0;
  transition: background 0s, color 0s, transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.theme-toggle:hover {
  background: var(--text);
  color: var(--surface);
}

.page {
  max-width: 1040px;
  margin: 0 auto;
  padding: 1rem 1.25rem;
}

.page-title {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0;
}

.page-desc {
  font-size: 0.77rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

.page-desc a {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.page-desc a:hover {
  background: var(--text);
  color: var(--surface);
  text-decoration: none;
}

.tool-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 1rem;
  align-items: start;
}

.tool-output {
  position: sticky;
  top: 30px;
}

.panel-header {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--active-text);
  background: var(--active-bg);
  margin-bottom: 0.5rem;
  padding: 3px 6px;
  background-image:
    repeating-linear-gradient(
      to bottom,
      rgba(255,255,255,0) 0px,
      rgba(255,255,255,0) 1px,
      rgba(255,255,255,0.08) 1px,
      rgba(255,255,255,0.08) 2px
    );
}

.controls-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.625rem;
}

textarea.text-input {
  min-height: 70px;
  resize: none;
}

.section-label  { font-size: 0.77rem; color: var(--text-muted); }
.unit           { font-size: 0.77rem; color: var(--text-subtle); }
.slider-label   { font-size: 0.77rem; color: var(--text-muted); }
.slider-label span:last-child { font-family: inherit; color: var(--text-subtle); }
.divider        { height: 1px; background: var(--border); }

.ctrl-label {
  font-size: 0.77rem;
  color: var(--text);
  min-width: 40px;
}

.toggle-group {
  display: flex;
  background: var(--input-bg);
  border: 1px solid var(--border);
  padding: 2px;
  gap: 2px;
}

.toggle-btn {
  flex: 1;
  padding: 0.25rem 0.4rem;
  border: none;
  background: transparent;
  color: var(--text);
  font-family: inherit;
  font-size: 0.77rem;
  cursor: pointer;
  transition: background 0s, color 0s, transform 0.15s cubic-bezier(0.34, 1.56, 0.64, 1);
  touch-action: manipulation;
}

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

.toggle-btn.active {
  background: var(--active-bg);
  color: var(--active-text);
  font-weight: 400;
  box-shadow: none;
}

.options-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3px;
}

.options-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }

.options-grid.cols-4,
.direction-grid { grid-template-columns: repeat(4, 1fr); }

.option-btn {
  padding: 0.3rem 0.25rem;
  background: var(--btn-bg);
  border: 1px solid var(--border);
  color: var(--text);
  cursor: pointer;
  font-family: inherit;
  font-size: 0.72rem;
  text-align: center;
  transition: background 0s, color 0s, transform 0.12s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.12s;
  touch-action: manipulation;
  user-select: none;
  box-shadow: var(--shadow);
}

.option-btn:hover {
  background: var(--text);
  color: var(--surface);
  box-shadow: none;
  transform: translate(2px, 2px);
}

.option-btn.selected {
  background: var(--active-bg);
  color: var(--active-text);
  box-shadow: none;
  transform: translate(2px, 2px);
}

.direction-btn {
  padding: 0.3rem;
  background: var(--btn-bg);
  border: 1px solid var(--border);
  color: var(--text);
  cursor: pointer;
  font-size: 1rem;
  text-align: center;
  transition: background 0s, color 0s, transform 0.12s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.12s;
  touch-action: manipulation;
  box-shadow: var(--shadow);
}

.direction-btn:hover {
  background: var(--text);
  color: var(--surface);
  box-shadow: none;
  transform: translate(2px, 2px);
}

.direction-btn.selected {
  background: var(--active-bg);
  color: var(--active-text);
  box-shadow: none;
  transform: translate(2px, 2px);
}

.font-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
  max-height: 175px;
  overflow-y: auto;
  padding-right: 0.25rem;
}

.font-option {
  padding: 0.2rem 0.375rem;
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
  font-size: 0.72rem;
  text-align: left;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: background 0s, color 0s, transform 0.12s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.font-option:hover {
  background: var(--text);
  color: var(--surface);
}

.font-option.selected {
  background: var(--active-bg);
  color: var(--active-text);
  font-weight: 400;
}

.text-input,
.hex-input,
.number-input {
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 0;
  color: var(--text);
  font-family: inherit;
}

.text-input:focus,
.hex-input:focus,
.number-input:focus {
  outline: 2px solid var(--border);
  outline-offset: -2px;
}

.text-input {
  width: 100%;
  padding: 0.375rem 0.5rem;
  font-size: 0.85rem;
  resize: vertical;
  min-height: 64px;
  line-height: 1.5;
}

.text-input::placeholder { color: var(--text-subtle); }

.hex-input {
  width: 72px;
  padding: 0.25rem 0.375rem;
  font-family: 'Courier New', monospace;
  font-size: 0.72rem;
}

.number-input {
  width: 65px;
  padding: 0.25rem 0.375rem;
  font-size: 0.77rem;
  text-align: center;
}

select.number-input {
  cursor: pointer;
  text-align: left;
  width: 90px;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%23000'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  padding-right: 24px;
}

[data-theme="dark"] select.number-input {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%23fff'/%3E%3C/svg%3E");
}

select.number-input option {
  background: var(--input-bg);
  color: var(--text);
}

.color-picker {
  width: 32px;
  height: 24px;
  border: 1px solid var(--border);
  border-radius: 0;
  cursor: pointer;
  background: none;
  padding: 1px;
  box-shadow: var(--shadow);
}

.color-picker::-webkit-color-swatch-wrapper { padding: 0; }
.color-picker::-webkit-color-swatch { border: none; border-radius: 0; }

.slider {
  width: 100%;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--border);
  border-radius: 0;
  outline: none;
  cursor: pointer;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 10px;
  height: 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0;
  cursor: pointer;
  transition: transform 0.15s cubic-bezier(0.34, 1.56, 0.64, 1), background 0s;
  box-shadow: var(--shadow);
}

.slider::-webkit-slider-thumb:hover {
  background: var(--text);
  transform: none;
}

.checkbox-group input[type="checkbox"] {
  width: 12px;
  height: 12px;
  accent-color: var(--text);
  cursor: pointer;
  flex-shrink: 0;
  border-radius: 0;
}

.checkbox-group label {
  font-size: 0.77rem;
  color: var(--text);
  cursor: pointer;
  font-weight: 400;
}

.collapsible-settings {
  border-top: 1px solid var(--border);
  display: none;
}

.collapsible-settings.visible { display: block; }

.preview-area {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0;
  min-height: 120px;
  max-height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  margin-bottom: 0.5rem;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

#previewContent {
  width: 100%;
  max-width: 100%;
  max-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

#previewContent svg { max-width: 100%; overflow: hidden; }

.code-output {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0;
  padding: 0.625rem;
  font-family: 'Courier New', monospace;
  font-size: 0.68rem;
  line-height: 1.6;
  max-height: 150px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--text);
  box-shadow: var(--shadow);
}

.copy-btn {
  width: 100%;
  padding: 0.375rem 1rem;
  margin-top: 0.375rem;
  background: var(--active-bg);
  border: 1px solid var(--border);
  border-radius: 0;
  color: var(--active-text);
  font-family: inherit;
  font-size: 0.77rem;
  font-weight: 400;
  cursor: pointer;
  transition: background 0s, color 0s, transform 0.12s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.12s;
  touch-action: manipulation;
  box-shadow: var(--shadow);
}

.copy-btn:hover {
  opacity: 1;
  box-shadow: none;
  transform: translate(2px, 2px);
}

.copy-btn.copied {
  opacity: 0.7;
  box-shadow: none;
  transform: translate(2px, 2px);
}

.btn-sm {
  padding: 0.2rem 0.5rem;
  background: var(--btn-bg);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: inherit;
  font-size: 0.72rem;
  cursor: pointer;
  line-height: 1;
  box-shadow: var(--shadow);
}

.btn-sm:hover {
  background: var(--text);
  color: var(--surface);
  box-shadow: none;
  transform: translate(2px, 2px);
}

.color-stop {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  background: var(--btn-bg);
  border: 1px solid var(--border);
  border-radius: 0;
  padding: 0.2rem 0.375rem;
}

.color-stop input[type="color"] {
  width: 22px;
  height: 22px;
  border: 1px solid var(--border);
  border-radius: 0;
  cursor: pointer;
  background: none;
  padding: 0;
}

.color-stop input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }
.color-stop input[type="color"]::-webkit-color-swatch { border: none; border-radius: 0; }

.color-hex {
  font-family: 'Courier New', monospace;
  font-size: 0.65rem;
  color: var(--text-subtle);
}

.remove-btn {
  background: none;
  border: none;
  color: var(--text-subtle);
  cursor: pointer;
  font-size: 0.875rem;
  line-height: 1;
  padding: 0 0.1rem;
  opacity: 0;
  transition: opacity 0.1s, color 0.1s, transform 0.15s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.color-stop:hover .remove-btn { opacity: 1; }
.remove-btn:hover { color: var(--text); }

.add-color-btn {
  width: 30px;
  height: 28px;
  border: 1px dashed var(--border);
  border-radius: 0;
  background: transparent;
  color: var(--text);
  font-size: 1rem;
  cursor: pointer;
  transition: background 0s, color 0s, border-style 0s, transform 0.22s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

.preview-area.preview-widget { background: #ffffff; }
[data-theme="dark"] .preview-area.preview-widget { background: #000000; }

.gradient-bar {
  height: 4px;
  border-radius: 0;
  margin-top: 0.5rem;
  border: 1px solid var(--border);
}

.presets-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 3px;
  margin-top: 0.375rem;
}

.preset-btn {
  height: 24px;
  border: 1px solid var(--border);
  border-radius: 0;
  cursor: pointer;
  transition: transform 0.15s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.12s;
  box-shadow: var(--shadow);
}

.preset-btn:hover {
  transform: translate(2px, 2px);
  box-shadow: none;
}

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--surface-alt); border-left: 1px solid var(--border); }
::-webkit-scrollbar-thumb {
  background: var(--text);
  border-radius: 0;
}

.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 2rem;
  padding: 0.625rem 0 0.875rem;
  font-size: 0.72rem;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.7;
  background: var(--surface);
}

.site-footer a { color: var(--text); text-decoration: none; }
.site-footer a:hover { background: var(--text); color: var(--surface); }

.nav-dropdown-btn {
  background: none;
  border: none;
  color: var(--text);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 400;
  cursor: pointer;
  padding: 0 0.5rem;
  height: 22px;
  line-height: 1;
}

.nav-dropdown-btn:hover {
  background: var(--text);
  color: var(--surface);
}

.nav-dropdown-menu {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0;
  padding: 0;
  min-width: 160px;
  box-shadow: var(--shadow-lg);
}

.nav-dropdown-item {
  display: block;
  padding: 0.35rem 0.75rem;
  font-size: 0.82rem;
  color: var(--text);
  text-decoration: none;
  transition: background 0s, color 0s, transform 0.12s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.nav-dropdown-item:hover {
  background: var(--text);
  color: var(--surface);
}

.nav-dropdown-item.active {
  background: var(--text);
  color: var(--surface);
  font-weight: 400;
}

@media (max-width: 1024px) {
  .tool-layout { grid-template-columns: 1fr; }
  .tool-output  { position: static; }
}

@media (max-width: 640px) {
  .page { padding: 0.75rem; }

  .site-header { padding: 0 0.5rem; }

  .controls-grid { grid-template-columns: 1fr; }

  .option-btn   { padding: 0.5rem 0.375rem; font-size: 0.77rem; }
  .toggle-btn   { padding: 0.375rem 0.5rem; }
  .direction-btn { padding: 0.375rem; }
  .copy-btn     { padding: 1rem; font-size: 0.9rem; }

  .options-grid.cols-4,
  .direction-grid { grid-template-columns: repeat(2, 1fr); }

  .presets-grid { grid-template-columns: repeat(3, 1fr); }

  .preview-area { overflow: hidden; }
  .preview-area svg,
  .preview-area > * { max-width: 100%; }
}

@keyframes navPop {
  0%   { transform: translateY(0); }
  50%  { transform: translateY(-2px); }
  100% { transform: translateY(0); }
}

@keyframes popIn {
  0%   { transform: translate(2px, 2px) scale(0.85); }
  55%  { transform: translate(2px, 2px) scale(1.08); }
  100% { transform: translate(2px, 2px) scale(1); }
}

@keyframes starFade {
  0%   { opacity: 1; transform: translate(-50%, -50%) scale(1) rotate(0deg); }
  100% { opacity: 0; transform: translate(-50%, calc(-50% - 48px)) scale(0.1) rotate(200deg); }
}

@keyframes floatUp {
  0%   { opacity: 1; transform: translateX(-50%) translateY(0) scale(1); }
  25%  { opacity: 1; transform: translateX(-50%) translateY(-12px) scale(1.05); }
  100% { opacity: 0; transform: translateX(-50%) translateY(-55px) scale(0.85); }
}

.site-logo:hover { transform: scale(1.05); }

.nav-link:hover { animation: navPop 0.25s ease; }

.nav-dropdown-btn:hover { animation: navPop 0.25s ease; }

.nav-dropdown-item:hover { transform: translateX(4px); }

.theme-toggle:hover  { transform: scale(1.08); }
.theme-toggle:active { transform: scale(0.9); }

.toggle-btn:hover  { transform: scale(1.03); }
.toggle-btn:active { transform: scale(0.96); }

.copy-btn.copied {
  opacity: 1;
  animation: popIn 0.28s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

.preview-area {
  transition: box-shadow 0.18s, transform 0.18s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.preview-area:hover {
  box-shadow: 6px 6px 0 var(--text);
  transform: translate(-2px, -2px);
}

.color-picker {
  transition: transform 0.18s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.color-picker:hover { transform: scale(1.08); }

.color-stop input[type="color"] {
  transition: transform 0.18s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.color-stop input[type="color"]:hover { transform: scale(1.1); }

.font-option:hover { transform: translateX(4px); }

.remove-btn:hover { transform: scale(1.2) rotate(12deg); }

.add-color-btn:hover { transform: scale(1.08) rotate(90deg); }

.preset-btn:hover {
  transform: translate(2px, 2px);
  box-shadow: none;
}

.slider::-webkit-slider-thumb:hover { transform: scaleY(1.2); }

.checkbox-group input[type="checkbox"] {
  transition: transform 0.15s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.checkbox-group input[type="checkbox"]:checked { transform: scale(1.15); }

.site-footer a {
  display: inline-block;
  transition: background 0s, color 0s, transform 0.15s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.site-footer a:hover { transform: translateY(-2px); }

[data-tip] { position: relative; }

[data-tip]::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) scale(0.6);
  transform-origin: bottom center;
  background: var(--text);
  color: var(--surface);
  padding: 3px 8px;
  font-size: 0.65rem;
  font-family: inherit;
  white-space: nowrap;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  pointer-events: none;
  opacity: 0;
  z-index: 1000;
  transition: opacity 0.1s, transform 0.22s cubic-bezier(0.34, 1.56, 0.64, 1);
}

[data-tip]:hover::after {
  opacity: 1;
  transform: translateX(-50%) scale(1);
}

.star-particle {
  position: fixed;
  pointer-events: none;
  z-index: 9999;
  user-select: none;
  animation: starFade 0.72s ease-out forwards;
  display: block;
  line-height: 0;
}

.star-particle svg {
  display: block;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

.float-popup {
  position: fixed;
  pointer-events: none;
  z-index: 9999;
  user-select: none;
  font-family: inherit;
  font-size: 0.75rem;
  animation: floatUp 0.95s ease-out forwards;
  white-space: nowrap;
  background: var(--text);
  color: var(--surface);
  padding: 2px 6px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

@media (hover: none) {
  .star-particle { display: none; }
}

.slice-wrap {
      position: relative;
      border: 1px solid var(--border);
      margin-bottom: 0.5rem;
      background: var(--surface-alt);
    }
    #sliceCanvas {
      display: block;
      width: 100%;
      height: auto;
      cursor: crosshair;
    }
    .preview-outer {
      min-height: 240px;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 2.5rem;
      overflow: visible;
      background: #f0f0f0;
      border: 1px solid var(--border);
      position: relative;
    }
    .preview-outer.dark-bg { background: #1a1a1a; }
    #previewBox {
      box-sizing: border-box;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 1rem;
      flex-shrink: 0;
      font-size: 0.8rem;
      color: #555;
      text-align: center;
      background: #fff;
      min-width: 60px;
      min-height: 40px;
    }
    .preview-outer.dark-bg #previewBox {
      background: #222;
      color: #aaa;
    }
    .unit-sel {
      background: var(--input-bg);
      border: 1px solid var(--border);
      color: var(--text);
      font-family: inherit;
      font-size: 0.7rem;
      padding: 0 3px;
      height: 22px;
      cursor: pointer;
    }
    .side-row {
      display: flex;
      align-items: center;
      gap: 3px;
    }
    .side-lbl {
      font-size: 0.62rem;
      color: var(--text-subtle);
      min-width: 16px;
      text-align: center;
    }
    .side-num {
      width: 44px;
      padding: 0.2rem 0.3rem;
      font-size: 0.75rem;
      text-align: center;
    }
    .link-btn {
      background: none;
      border: 1px solid var(--border);
      color: var(--text-subtle);
      cursor: pointer;
      font-size: 0.65rem;
      padding: 1px 5px;
      line-height: 1.4;
      flex-shrink: 0;
      transition: background 0s, color 0s, transform 0.12s cubic-bezier(0.34, 1.56, 0.64, 1);
    }
    .link-btn.on {
      background: var(--active-bg);
      color: var(--active-text);
    }
    .link-btn:hover { transform: scale(1.1); }
    .theme-preview-btn {
      position: absolute;
      top: 6px;
      right: 6px;
      background: none;
      border: 1px solid #888;
      color: #888;
      font-family: inherit;
      font-size: 0.65rem;
      padding: 1px 5px;
      cursor: pointer;
      line-height: 1.4;
    }
    .slice-val {
      font-size: 0.68rem;
      color: var(--text-subtle);
      min-width: 30px;
      text-align: right;
      font-family: 'Courier New', monospace;
    }
    .inline-check {
      display: flex;
      align-items: center;
      gap: 5px;
      font-size: 0.72rem;
      color: var(--text);
    }
    .inline-check input { cursor: pointer; }
    .inline-check label { cursor: pointer; }
    .help-note {
      font-size: 0.68rem;
      color: var(--text-subtle);
      font-style: italic;
      margin-top: 3px;
    }