@font-face {
  font-family: "LXGW Icon WenKai";
  src: url("assets/fonts/LXGWWenKaiGBScreen.ttf") format("truetype");
  font-display: swap;
}

:root {
  color-scheme: light;
  --ink: #1f1d19;
  --muted: #6f726c;
  --line: #d8d2c7;
  --paper: #f4efe4;
  --panel: #fbfaf6;
  --jade: #557568;
  --cinnabar: #9d3f32;
  --shadow: 0 28px 70px rgba(42, 38, 31, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow: hidden;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(31, 29, 25, 0.035) 1px, transparent 1px),
    linear-gradient(180deg, #f8f6ef 0%, #e9e5dc 100%);
  background-size: 28px 28px, auto;
  font-family: "LXGW Icon WenKai", ui-serif, "Songti SC", "Noto Serif CJK SC", serif;
}

button,
input {
  font: inherit;
}

button {
  color: inherit;
}

.app-shell {
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  gap: 12px;
  height: 100svh;
  padding: 16px 20px;
  overflow: hidden;
}

.tool-panel {
  --tool-head-height: 30px;
  --tool-subhead-height: 18px;
  --tool-control-height: 30px;
  --tool-gap: 12px;
  --tool-group-gap: 8px;
  --tool-inner-gap: 6px;
  align-self: end;
  justify-self: center;
  display: grid;
  grid-template-columns: 180px 246px 532px 178px 96px;
  grid-template-areas: "content colorpool style position export";
  align-items: start;
  justify-content: center;
  gap: var(--tool-gap);
  height: 200px;
  width: min(100%, 1320px);
  max-height: 200px;
  padding: 12px;
  border: 1px solid rgba(31, 29, 25, 0.12);
  border-radius: 8px;
  background: rgba(251, 250, 246, 0.82);
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px);
}

.brand-mark {
  position: fixed;
  top: 22px;
  left: 28px;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  padding: 10px 12px;
  border: 1px solid rgba(31, 29, 25, 0.1);
  border-radius: 8px;
  background: rgba(251, 250, 246, 0.78);
  box-shadow: 0 16px 34px rgba(42, 38, 31, 0.1);
  backdrop-filter: blur(18px);
}

.seal {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  border: 2px solid var(--cinnabar);
  color: var(--cinnabar);
  line-height: 1;
}

h1 {
  margin: 0;
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 0;
  white-space: nowrap;
}

p {
  margin: 4px 0 0;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
}

.control-group {
  display: grid;
  align-content: start;
  gap: var(--tool-group-gap);
  height: 100%;
  min-width: 0;
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
  padding-right: 2px;
  scrollbar-width: thin;
  scrollbar-color: rgba(85, 117, 104, 0.38) transparent;
}

.control-group::-webkit-scrollbar {
  width: 6px;
}

.control-group::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: rgba(85, 117, 104, 0.3);
}

.control-group::-webkit-scrollbar-track {
  background: transparent;
}

.text-control {
  grid-area: content;
}

.content-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: var(--tool-group-gap);
  min-height: var(--tool-head-height);
}

.content-mode {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.52);
}

.mode-button {
  min-height: 22px;
  border-radius: 5px;
  background: transparent;
  color: var(--muted);
  font-size: 12px;
}

.mode-button.is-active {
  background: #20211f;
  color: #fffaf0;
}

.content-entry[hidden] {
  display: none;
}

.image-entry {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: var(--tool-inner-gap);
}

.color-pool-control {
  grid-area: colorpool;
}

.color-pool-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: var(--tool-group-gap);
  min-height: var(--tool-head-height);
}

.color-targets {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.52);
}

.color-target {
  min-height: 22px;
  border-radius: 5px;
  background: transparent;
  color: var(--muted);
  font-size: 12px;
}

.color-target.is-active {
  background: #20211f;
  color: #fffaf0;
}

.selected-color-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--tool-group-gap);
  min-height: 22px;
  padding: 0 3px;
  color: var(--muted);
  font-size: 11px;
}

.selected-color-info code {
  color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
}

.style-control {
  grid-area: style;
  grid-template-columns: 178px 154px minmax(176px, 1fr);
  grid-template-rows: var(--tool-head-height) minmax(0, 1fr);
  grid-template-areas:
    "style-label style-label style-label"
    "style-palette style-type style-elements";
  column-gap: var(--tool-gap);
  row-gap: var(--tool-group-gap);
}

.style-control > .group-label {
  grid-area: style-label;
  display: flex;
  align-items: center;
  min-height: var(--tool-head-height);
}

.style-control > .palette-control {
  grid-area: style-palette;
}

.style-control > .element-control {
  grid-area: style-elements;
}

.style-control > .type-control {
  grid-area: style-type;
}

.element-control,
.palette-control,
.gradient-control {
  display: grid;
  align-content: start;
  gap: var(--tool-inner-gap);
  min-width: 0;
  min-height: 0;
}

.palette-control > .group-label,
.element-control > .group-label,
.type-control > .group-label {
  display: flex;
  align-items: center;
  min-height: var(--tool-subhead-height);
}

.text-control {
  grid-template-rows: none;
}

.color-pool-control {
  grid-template-rows: none;
}

.position-control {
  grid-template-rows: none;
}

.type-control {
  min-width: 0;
  min-height: 0;
}

.position-control {
  grid-area: position;
}

.action-control {
  grid-area: export;
}

label,
.group-label {
  color: #35322d;
  font-size: 12px;
  white-space: nowrap;
}

.text-input,
.hex-input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--ink);
  outline: none;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.text-input {
  height: var(--tool-control-height);
  padding: 0 9px;
  font-size: 19px;
}

.image-pick-button,
.image-clear-button,
.mask-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: var(--tool-control-height);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.66);
  color: #36332e;
  font-size: 12px;
}

.image-pick-button {
  gap: 6px;
  min-width: 0;
  padding: 0 8px;
}

.image-pick-button svg,
.image-clear-button svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
  flex: 0 0 auto;
}

.image-clear-button {
  width: 32px;
}

.mask-toggle {
  width: 42px;
  padding: 0;
  color: var(--muted);
}

.mask-toggle[aria-pressed="true"] {
  background: #20211f;
  color: #fffaf0;
}

.hex-input {
  height: var(--tool-control-height);
  padding: 0 8px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  text-transform: lowercase;
}

.text-input:focus,
.hex-input:focus {
  border-color: var(--jade);
  box-shadow: 0 0 0 3px rgba(85, 117, 104, 0.16);
}

.meta-line {
  color: var(--muted);
  font-size: 11px;
}

.segmented {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.52);
}

.segment,
.download-button,
.icon-toggle,
.swatch,
.icon-button,
.element-toggle,
.color-target,
.mode-button,
.image-pick-button,
.image-clear-button,
.mask-toggle {
  border: 0;
  cursor: pointer;
}

.segment {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 32px;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  font-size: 13px;
}

.segment svg,
.download-button svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
  flex: 0 0 auto;
}

.segment.is-active {
  background: #20211f;
  color: #fffaf0;
}

.preset-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(22px, 1fr));
  gap: var(--tool-inner-gap);
  max-height: 112px;
  min-height: 0;
  overflow-y: auto;
  padding-right: 2px;
}

.swatch {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  min-height: 22px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.56);
  color: #36332e;
  font-size: 0;
  text-align: center;
  white-space: nowrap;
}

.swatch span {
  width: 15px;
  height: 15px;
  flex: 0 0 auto;
  border: 1px solid rgba(31, 29, 25, 0.16);
}

.swatch.is-active {
  border-color: var(--jade);
  box-shadow: inset 0 0 0 1px var(--jade);
}

.transparent-swatch span,
canvas {
  background:
    linear-gradient(45deg, rgba(31, 29, 25, 0.14) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(31, 29, 25, 0.14) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(31, 29, 25, 0.14) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(31, 29, 25, 0.14) 75%);
  background-color: rgba(255, 255, 255, 0.62);
  background-position: 0 0, 0 6px, 6px -6px, -6px 0;
  background-size: 12px 12px;
}

.element-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--tool-inner-gap);
}

.style-control .element-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 5px;
}

.element-toggle {
  min-height: 22px;
  padding: 0 4px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.56);
  color: var(--muted);
  font-size: 11px;
  white-space: nowrap;
}

.element-toggle[aria-pressed="true"] {
  background: #20211f;
  color: #fffaf0;
}

.color-row,
.switch-row,
.range-label {
  display: grid;
  grid-template-columns: auto 34px minmax(0, 1fr);
  align-items: center;
  gap: var(--tool-group-gap);
}

.switch-row {
  grid-template-columns: 1fr auto;
}

.range-label {
  grid-template-columns: 1fr auto;
}

.range-with-number {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 54px;
  align-items: center;
  gap: var(--tool-group-gap);
}

.gradient-controls .range-with-number {
  grid-template-columns: minmax(0, 1fr);
}

.number-input {
  width: 54px;
  height: 28px;
  padding: 0 5px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  outline: none;
}

.number-input:focus {
  border-color: var(--jade);
  box-shadow: 0 0 0 3px rgba(85, 117, 104, 0.16);
}

input[type="color"] {
  width: 34px;
  height: var(--tool-control-height);
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: transparent;
}

.icon-toggle {
  position: relative;
  width: 42px;
  height: 24px;
  border-radius: 999px;
  background: #c9c4b9;
  transition: background 160ms ease;
}

.icon-toggle[aria-pressed="true"] {
  background: var(--jade);
}

.toggle-dot {
  position: absolute;
  top: 4px;
  left: 4px;
  width: 16px;
  height: 16px;
  border-radius: 999px;
  background: #fffaf0;
  box-shadow: 0 2px 8px rgba(31, 29, 25, 0.16);
  transition: transform 160ms ease;
}

.icon-toggle[aria-pressed="true"] .toggle-dot {
  transform: translateX(18px);
}

.gradient-controls {
  display: grid;
  gap: var(--tool-inner-gap);
  opacity: 1;
  transition: opacity 160ms ease;
}

.gradient-controls[data-disabled="true"] {
  opacity: 0.45;
}

.range-input {
  width: 100%;
  accent-color: var(--jade);
}

.position-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--tool-inner-gap);
  min-height: var(--tool-head-height);
}

.icon-button {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 6px;
  background: #20211f;
  color: #fffaf0;
}

.icon-button svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.reset-button {
  width: auto;
  min-width: 62px;
  padding: 0 8px;
  grid-auto-flow: column;
  gap: 5px;
  font-size: 12px;
}

.reset-button svg {
  width: 15px;
  height: 15px;
}

.axis-control {
  display: grid;
  gap: var(--tool-inner-gap);
  min-width: 0;
}

.axis-label {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
}

.axis-number {
  width: 58px;
  height: 24px;
  font-size: 11px;
}

.compact-grid {
  display: grid;
  grid-template-columns: 1fr;
  align-items: start;
  gap: var(--tool-group-gap);
  align-content: start;
}

.compact-grid > div {
  display: grid;
  gap: var(--tool-inner-gap);
}

.type-control > .group-label {
  grid-column: 1 / -1;
}

.auto-space-control {
  grid-column: 1 / -1;
}

.text-color-row {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  align-items: center;
  gap: var(--tool-group-gap);
}

.compact-grid > div[data-disabled="true"] {
  opacity: 0.48;
}

button:disabled,
input:disabled {
  cursor: not-allowed;
  opacity: 0.52;
}

.download-button {
  display: flex;
  align-items: center;
  justify-content: center;
  align-self: stretch;
  gap: 8px;
  height: 100%;
  min-height: 0;
  border-radius: 8px;
  background: var(--ink);
  color: #fffaf0;
  font-size: 15px;
  box-shadow: 0 16px 34px rgba(31, 29, 25, 0.2);
}

.preview-panel {
  align-self: center;
  justify-self: center;
  display: grid;
  gap: 8px;
  width: 100%;
  min-height: 0;
  min-width: 0;
}

.preview-topline {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  max-width: min(calc(100svh - 280px), 620px);
  width: min(100%, calc(100svh - 280px), 620px);
  margin: 0 auto;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
}

.preview-topline strong {
  color: var(--ink);
  font-size: 13px;
  font-weight: 600;
}

.canvas-stage {
  width: min(100%, calc(100svh - 280px), 620px);
  aspect-ratio: 1;
  margin: 0 auto;
  padding: clamp(8px, 1.1vw, 14px);
  border: 1px solid rgba(31, 29, 25, 0.12);
  background: rgba(255, 255, 255, 0.34);
  box-shadow: var(--shadow);
  cursor: grab;
  touch-action: none;
  user-select: none;
}

.canvas-stage.is-dragging {
  cursor: grabbing;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 22%;
  box-shadow: 0 24px 60px rgba(31, 29, 25, 0.2);
  pointer-events: none;
}

@media (max-width: 1350px) {
  .tool-panel {
    grid-template-columns: 192px minmax(0, 1fr) 208px 104px;
    grid-template-rows: minmax(0, 1fr) minmax(0, 1fr);
    grid-template-areas:
      "content colorpool colorpool export"
      "style style position export";
    width: min(100%, 1120px);
    height: 248px;
    max-height: 248px;
  }

  .style-control {
    grid-template-columns: minmax(180px, 1fr) minmax(140px, 0.72fr) minmax(180px, 0.86fr);
  }

  .style-control .element-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .position-control {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: var(--tool-head-height) minmax(0, 1fr);
    align-items: stretch;
    align-content: stretch;
    column-gap: 12px;
  }

  .position-head {
    grid-column: 1 / -1;
    grid-row: 1;
  }

  .position-control .axis-control {
    grid-row: 2;
  }

  .position-control .axis-control:nth-of-type(2) {
    grid-column: 1;
  }

  .position-control .axis-control:nth-of-type(3) {
    grid-column: 2;
  }

  .position-head,
  .axis-control {
    min-width: 0;
  }

  .canvas-stage,
  .preview-topline {
    width: min(100%, calc(100svh - 330px), 500px);
  }
}

@media (max-width: 860px) {
  body {
    overflow: auto;
  }

  .app-shell {
    grid-template-rows: auto auto;
    gap: 24px;
    min-height: 100svh;
    height: auto;
    overflow: visible;
    padding: 16px;
  }

  .tool-panel,
  .preview-panel {
    align-self: stretch;
  }

  .tool-panel {
    display: flex;
    flex-wrap: wrap;
    align-items: stretch;
    gap: 14px;
    height: auto;
    max-height: none;
  }

  .brand-mark {
    position: static;
    width: 100%;
    box-shadow: none;
  }

  .text-control,
  .color-pool-control,
  .style-control,
  .position-control,
  .action-control {
    flex: 1 1 260px;
    max-width: none;
  }

  .style-control {
    grid-template-columns: 1fr;
    grid-template-areas:
      "style-label"
      "style-palette"
      "style-type"
      "style-elements";
  }

  .style-control .element-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .position-control {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }

  .preview-panel {
    order: 1;
  }

  .tool-panel {
    order: 2;
  }

  .canvas-stage,
  .preview-topline {
    width: min(100%, 560px);
  }
}

@media (max-width: 440px) {
  .preset-grid,
  .compact-grid {
    grid-template-columns: 1fr;
  }

  .text-control,
  .color-pool-control,
  .style-control,
  .position-control,
  .action-control {
    flex-basis: 100%;
  }

  .color-row {
    grid-template-columns: 1fr 42px;
  }

  .color-row .hex-input {
    grid-column: 1 / -1;
  }

  h1 {
    font-size: 22px;
  }
}