/* 净色 — Procreate-inspired dark editor. No trademarks. */
:root {
  --bg: #0b0b0d;
  --stage: #141416;
  --panel: #161618;
  --panel-2: #1c1c20;
  --line: rgba(255, 245, 230, 0.08);
  --line-strong: rgba(255, 245, 230, 0.14);
  --text: #f3f0ea;
  --muted: #8d8983;
  --faint: #5c5955;
  --accent: #e89b6d;
  --accent-2: #f3c4a0;
  --accent-dim: rgba(232, 155, 109, 0.16);
  --danger: #e07a72;
  --ok: #86c49a;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
  --radius: 10px;
  --rail: 58px;
  --top: 52px;
  --props: 46px;
  --side: 268px;
  --status: 28px;
  --font: "SF Pro Text", "SF Pro Display", -apple-system, BlinkMacSystemFont,
    "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC",
    "Microsoft YaHei", "Helvetica Neue", sans-serif;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
html { background: var(--bg); }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  user-select: none;
  -webkit-user-select: none;
}

button, input, select { font-family: inherit; color: inherit; }
button { cursor: pointer; }
img { display: block; max-width: 100%; }

.app {
  display: grid;
  grid-template-rows: var(--top) var(--props) 1fr var(--status);
  grid-template-columns: var(--rail) 1fr var(--side);
  grid-template-areas:
    "top top top"
    "rail props side"
    "rail stage side"
    "status status status";
  height: 100%;
  min-height: 0;
  background:
    radial-gradient(1200px 700px at 20% -10%, rgba(232, 155, 109, 0.05), transparent 55%),
    var(--bg);
}

/* ---------- top bar ---------- */
.topbar {
  grid-area: top;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 14px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, #18181b 0%, #131315 100%);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-right: 12px;
  margin-right: 4px;
  border-right: 1px solid var(--line);
  min-width: 0;
}
.brand-mark {
  width: 28px; height: 28px; flex: none;
  border-radius: 8px;
  background: linear-gradient(145deg, #f0b48a, #c56b45 60%, #8a3d2c);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.25), 0 2px 8px rgba(197, 107, 69, .35);
  display: grid; place-items: center;
}
.brand-mark svg { width: 16px; height: 16px; }
.brand-name {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.1;
}
.brand-sub {
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.04em;
  margin-top: 1px;
}
.top-cluster { display: flex; align-items: center; gap: 6px; }
.top-cluster.right { margin-left: auto; }
.sep { width: 1px; height: 22px; background: var(--line); margin: 0 6px; }

/* ---------- buttons ---------- */
.icon-btn {
  --size: 32px;
  width: var(--size); height: var(--size);
  display: inline-grid; place-items: center;
  border: 0; border-radius: 8px;
  background: transparent;
  color: #d8d4ce;
  transition: background .15s, color .15s, opacity .15s, transform .12s;
}
.icon-btn svg { width: 18px; height: 18px; display: block; }
.icon-btn:hover { background: rgba(255,255,255,.07); color: #fff; }
.icon-btn:active { transform: scale(0.96); }
.icon-btn:disabled, .icon-btn[aria-disabled="true"] {
  opacity: 0.32; pointer-events: none;
}
.icon-btn.active, .icon-btn[aria-pressed="true"] {
  background: var(--accent-dim);
  color: var(--accent-2);
}
.icon-btn.danger:hover { color: var(--danger); background: rgba(224,122,114,.12); }

.btn {
  height: 32px;
  padding: 0 12px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--panel-2);
  color: var(--text);
  font-size: 12px;
  letter-spacing: 0.02em;
  display: inline-flex; align-items: center; gap: 6px;
  transition: background .15s, border-color .15s, transform .12s;
}
.btn:hover { background: #242428; border-color: rgba(255,245,230,.22); }
.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.38; pointer-events: none; }
.btn-primary:disabled { filter: grayscale(.35); opacity: 0.4; }
.btn svg { width: 14px; height: 14px; }
.btn-primary {
  background: linear-gradient(180deg, #f0ae80, #d98655);
  border-color: transparent;
  color: #2a150c;
  font-weight: 600;
  box-shadow: 0 1px 0 rgba(255,255,255,.2) inset, 0 4px 12px rgba(216, 134, 85, .28);
}
.btn-primary:hover { background: linear-gradient(180deg, #f6be98, #e09260); }
.btn-ghost { background: transparent; }
.btn-wide { width: 100%; justify-content: center; height: 36px; font-size: 13px; }

/* ---------- rails & panels ---------- */
.rail {
  grid-area: rail;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 10px 8px;
  border-right: 1px solid var(--line);
  background: #121214;
}
.rail-spacer { flex: 1; }
.tool {
  --size: 40px;
  width: var(--size); height: var(--size);
  border: 0; border-radius: 11px;
  background: transparent;
  color: #c5c1ba;
  display: grid; place-items: center;
  position: relative;
  transition: background .15s, color .15s;
}
.tool svg { width: 20px; height: 20px; }
.tool:hover { background: rgba(255,255,255,.06); color: #fff; }
.tool.active {
  background: #ece8e2;
  color: #161410;
  box-shadow: 0 2px 8px rgba(0,0,0,.35);
}
.tool-div {
  width: 22px; height: 1px;
  background: var(--line);
  margin: 6px 0;
}

.props {
  grid-area: props;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 16px;
  border-bottom: 1px solid var(--line);
  background: #141416;
  overflow: auto hidden;
  white-space: nowrap;
}
.prop {
  display: flex; align-items: center; gap: 8px;
  font-size: 11px; color: var(--muted);
  letter-spacing: 0.04em;
}
.prop > span.label { min-width: 2.4em; }
.prop .val {
  min-width: 2.6em;
  color: var(--text);
  font-variant-numeric: tabular-nums;
  font-size: 11px;
}
.color-well {
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 2px solid #fff;
  box-shadow: 0 0 0 1px rgba(0,0,0,.5), 0 2px 8px rgba(0,0,0,.4);
  cursor: pointer;
  background: #d49a7a;
  flex: none;
}
.color-well:hover { transform: scale(1.06); }

.side {
  grid-area: side;
  border-left: 1px solid var(--line);
  background: #121214;
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: auto;
}
.side-section {
  padding: 14px 16px 16px;
  border-bottom: 1px solid var(--line);
}
.side-title {
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 12px;
  font-weight: 600;
}
.row { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.row:last-child { margin-bottom: 0; }
.row .label { flex: 1; font-size: 12px; color: #c9c5bf; }
.row .val {
  width: 36px; text-align: right;
  font-size: 11px; color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.hint {
  font-size: 11px;
  color: var(--muted);
  line-height: 1.5;
  margin: 8px 0 0;
}
.seg {
  display: flex;
  background: #0e0e10;
  border-radius: 8px;
  padding: 2px;
  border: 1px solid var(--line);
  width: 100%;
}
.seg button {
  flex: 1; height: 26px;
  border: 0; border-radius: 6px;
  background: transparent;
  color: var(--muted);
  font-size: 11px;
}
.seg button.on {
  background: #2a2a2e;
  color: var(--text);
  box-shadow: 0 1px 2px rgba(0,0,0,.3);
}
.checks { display: flex; flex-direction: column; gap: 8px; }
.check {
  display: flex; align-items: center; gap: 8px;
  font-size: 12px; color: #c9c5bf;
  cursor: pointer;
}
.check input { accent-color: var(--accent); }

.layer-list { display: flex; flex-direction: column; gap: 6px; }
.layer {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 8px;
  border-radius: 8px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  font-size: 12px;
}
.layer .thumb {
  width: 32px; height: 32px;
  border-radius: 5px;
  background: #0c0c0e;
  overflow: hidden;
  flex: none;
  position: relative;
}
.layer .thumb canvas { width: 100%; height: 100%; }
.layer .eye {
  width: 28px; height: 28px;
  border: 0; background: transparent;
  color: var(--muted);
  display: grid; place-items: center;
  border-radius: 6px;
}
.layer .eye:hover { background: rgba(255,255,255,.06); color: #fff; }
.layer .eye.off { color: #4a4844; }
.layer .eye svg { width: 15px; height: 15px; }
.layer .name { flex: 1; }

.sel-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }

/* ---------- stage ---------- */
.stage {
  grid-area: stage;
  position: relative;
  min-width: 0; min-height: 0;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.015), transparent 40%),
    var(--stage);
  overflow: hidden;
  touch-action: none;
  cursor: default;
}
.stage.grab { cursor: grab; }
.stage.grabbing { cursor: grabbing; }
.stage.cross { cursor: crosshair; }
.stage.hide-cursor { cursor: none; }

#view {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.empty {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  z-index: 2;
}
.empty.hidden { display: none; }
.empty-card {
  pointer-events: auto;
  width: min(420px, calc(100% - 48px));
  padding: 32px 28px 28px;
  border-radius: 18px;
  background: rgba(20, 20, 22, 0.92);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow);
  text-align: center;
  backdrop-filter: blur(16px);
}
.empty-card h1 {
  margin: 14px 0 6px;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.12em;
}
.empty-card p {
  margin: 0 0 22px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
}
.empty-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.empty-icon {
  width: 56px; height: 56px; margin: 0 auto;
  border-radius: 16px;
  background: linear-gradient(145deg, #f0b48a, #c56b45 60%, #8a3d2c);
  display: grid; place-items: center;
  box-shadow: 0 8px 24px rgba(197,107,69,.35);
}
.empty-icon svg { width: 28px; height: 28px; }

.progress {
  position: absolute;
  left: 50%; bottom: 28px;
  transform: translateX(-50%);
  width: min(320px, calc(100% - 40px));
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(16,16,18,.92);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow);
  z-index: 5;
  display: none;
}
.progress.show { display: block; }
.progress .t { font-size: 11px; color: var(--muted); margin-bottom: 8px; letter-spacing: 0.06em; }
.bar {
  height: 4px; border-radius: 99px;
  background: #2a2a2e; overflow: hidden;
}
.bar > i {
  display: block; height: 100%; width: 0%;
  background: linear-gradient(90deg, #d98655, #f0b48a);
  border-radius: inherit;
  transition: width .12s linear;
}

/* ---------- status ---------- */
.status {
  grid-area: status;
  display: flex; align-items: center; gap: 14px;
  padding: 0 14px;
  border-top: 1px solid var(--line);
  background: #101012;
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.03em;
}
.status strong { color: #d8d4ce; font-weight: 500; }
.status .grow {
  margin-left: auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---------- sliders ---------- */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  height: 18px;
  background: transparent;
  width: 108px;
}
input[type="range"].grow { flex: 1; width: auto; }
input[type="range"]::-webkit-slider-runnable-track {
  height: 3px; border-radius: 99px;
  background: #3a3937;
}
input[type="range"]::-moz-range-track {
  height: 3px; border-radius: 99px;
  background: #3a3937;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px; height: 12px;
  margin-top: -4.5px;
  border-radius: 50%;
  background: #f2eee8;
  border: 0;
  box-shadow: 0 1px 4px rgba(0,0,0,.5);
  cursor: pointer;
}
input[type="range"]::-moz-range-thumb {
  width: 12px; height: 12px;
  border-radius: 50%;
  background: #f2eee8;
  border: 0;
  cursor: pointer;
}

/* ---------- color picker ---------- */
.popover {
  position: absolute;
  z-index: 20;
  width: 220px;
  padding: 12px;
  border-radius: 14px;
  background: #1a1a1e;
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow);
  display: none;
}
.popover.show { display: block; }
.sv {
  width: 100%; height: 140px;
  border-radius: 8px;
  position: relative;
  cursor: crosshair;
  background: #f00;
  overflow: hidden;
}
.sv .white {
  position: absolute; inset: 0;
  background: linear-gradient(90deg, #fff, transparent);
}
.sv .black {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent, #000);
}
.sv .knob {
  position: absolute;
  width: 12px; height: 12px;
  border: 2px solid #fff;
  border-radius: 50%;
  box-shadow: 0 0 0 1px rgba(0,0,0,.5);
  transform: translate(-50%, -50%);
  pointer-events: none;
}
.hue {
  width: 100%;
  margin-top: 10px;
}
.hue input[type="range"] { width: 100%; }
.hue input[type="range"]::-webkit-slider-runnable-track {
  height: 8px;
  background: linear-gradient(90deg,
    #f00, #ff0, #0f0, #0ff, #00f, #f0f, #f00);
}
.hue input[type="range"]::-moz-range-track {
  height: 8px;
  background: linear-gradient(90deg,
    #f00, #ff0, #0f0, #0ff, #00f, #f0f, #f00);
}
.hex-row {
  display: flex; align-items: center; gap: 8px;
  margin-top: 10px;
}
.hex-row input {
  flex: 1; height: 28px;
  border-radius: 6px;
  border: 1px solid var(--line-strong);
  background: #101012;
  padding: 0 8px;
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.swatches { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.swatches button {
  width: 18px; height: 18px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.15);
  padding: 0;
}

/* ---------- help ---------- */
.modal-back {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 30;
  display: none;
  align-items: center;
  justify-content: center;
}
.modal-back.show { display: flex; }
.modal {
  width: min(520px, calc(100% - 32px));
  max-height: calc(100% - 40px);
  overflow: auto;
  background: #17171a;
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 22px 24px 24px;
}
.modal h2 { margin: 0 0 14px; font-size: 16px; letter-spacing: 0.08em; }
.shortcuts {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.shortcuts th {
  text-align: left; color: var(--muted);
  font-weight: 500; font-size: 11px;
  letter-spacing: 0.1em; text-transform: uppercase;
  padding: 0 0 8px;
}
.shortcuts td { padding: 5px 12px 5px 0; color: #d4d0ca; }
.shortcuts kbd {
  display: inline-block;
  min-width: 1.6em;
  padding: 1px 6px;
  border-radius: 5px;
  border: 1px solid var(--line-strong);
  background: #101012;
  font-size: 11px;
  font-family: inherit;
  color: var(--accent-2);
  text-align: center;
}

/* ---------- compare / loupe ---------- */
.loupe {
  position: absolute;
  width: 92px; height: 92px;
  border-radius: 50%;
  border: 2px solid #fff;
  box-shadow: 0 0 0 1px #000, 0 8px 24px rgba(0,0,0,.45);
  pointer-events: none;
  overflow: hidden;
  display: none;
  z-index: 6;
  background: #000;
}
.loupe.show { display: block; }
.loupe canvas { width: 100%; height: 100%; image-rendering: pixelated; }
.loupe .chip {
  position: absolute; left: 50%; bottom: -18px;
  transform: translateX(-50%);
  font-size: 10px;
  background: #111;
  border: 1px solid var(--line-strong);
  padding: 1px 6px;
  border-radius: 99px;
  color: #eee;
}

/* tooltips */
[data-tip] { position: relative; }
[data-tip]::after {
  content: attr(data-tip);
  position: absolute;
  left: calc(100% + 10px);
  top: 50%;
  transform: translateY(-50%);
  background: #1c1c20;
  color: #eee;
  font-size: 11px;
  padding: 5px 8px;
  border-radius: 6px;
  border: 1px solid var(--line-strong);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity .12s;
  z-index: 15;
  box-shadow: var(--shadow);
}
.topbar [data-tip]::after,
.props [data-tip]::after {
  left: 50%; top: calc(100% + 8px);
  transform: translateX(-50%);
}
.tool[data-tip]:hover::after,
.icon-btn[data-tip]:hover::after,
.btn[data-tip]:hover::after { opacity: 1; }

.drag-over .stage::after {
  content: "松开以打开图片";
  position: absolute; inset: 16px;
  border: 1.5px dashed rgba(232,155,109,.7);
  border-radius: 16px;
  display: grid; place-items: center;
  color: var(--accent-2);
  letter-spacing: 0.12em;
  background: rgba(10,10,12,.45);
  z-index: 8;
  font-size: 14px;
}

@media (max-width: 900px) {
  .app {
    grid-template-columns: 52px 1fr;
    grid-template-rows: var(--top) var(--props) 1fr auto var(--status);
    grid-template-areas:
      "top top"
      "rail props"
      "rail stage"
      "side side"
      "status status";
  }
  .side { flex-direction: row; overflow: auto; }
  .side-section { min-width: 240px; flex: 1; }
  .brand-sub { display: none; }
}