:root {
  color-scheme: light;
  --ink: #171921;
  --muted: #6f7380;
  --soft: #f1f2f6;
  --line: rgba(27, 29, 38, 0.1);
  --purple: #7659ed;
  --purple-dark: #5f42df;
  --purple-soft: #ede9ff;
  --panel: rgba(255, 255, 255, 0.82);
  --shadow: 0 28px 80px rgba(42, 35, 86, 0.12);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: #f8f8fb;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Helvetica Neue", sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

button, input { font: inherit; }
button { color: inherit; }

.ambient {
  position: fixed;
  border-radius: 999px;
  filter: blur(2px);
  pointer-events: none;
  z-index: -1;
}

.ambient-one {
  width: 520px;
  height: 520px;
  left: -220px;
  top: 110px;
  background: radial-gradient(circle, rgba(225, 218, 255, .62), rgba(225, 218, 255, 0) 70%);
}

.ambient-two {
  width: 600px;
  height: 600px;
  right: -290px;
  top: 360px;
  background: radial-gradient(circle, rgba(218, 238, 255, .55), rgba(218, 238, 255, 0) 70%);
}

.topbar {
  width: min(1180px, calc(100% - 44px));
  height: 82px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font-size: 21px;
  font-weight: 730;
  letter-spacing: -.03em;
}

.brand-mark {
  width: 35px;
  height: 35px;
  display: grid;
  place-items: center;
  color: var(--purple-dark);
}

.brand-mark svg { width: 100%; height: 100%; }

.privacy-pill {
  padding: 8px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  background: rgba(255, 255, 255, .66);
  font-size: 13px;
  backdrop-filter: blur(12px);
}

.privacy-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #5bc991;
  box-shadow: 0 0 0 4px rgba(91, 201, 145, .12);
}
.topbar-actions { display: flex; align-items: center; gap: 10px; }
.back-link { padding: 8px 10px; color: var(--muted); text-decoration: none; font-size: 13px; font-weight: 620; }
.back-link:hover { color: var(--ink); }

main { width: min(1180px, calc(100% - 44px)); margin: 0 auto; }

.hero {
  text-align: center;
  padding: 70px 0 44px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  min-height: 29px;
  padding: 0 12px;
  color: var(--purple-dark);
  background: var(--purple-soft);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .1em;
}

.hero h1 {
  margin: 18px 0 14px;
  font-size: clamp(44px, 6.2vw, 76px);
  line-height: 1.05;
  letter-spacing: -.065em;
  font-weight: 790;
}

.hero h1 span {
  background: linear-gradient(120deg, var(--purple-dark), #9277f8 64%, #6c8cf1);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.8;
}

kbd {
  min-width: 24px;
  height: 24px;
  padding: 0 6px;
  display: inline-grid;
  place-items: center;
  border: 1px solid rgba(25, 27, 35, .15);
  border-bottom-width: 2px;
  border-radius: 6px;
  background: #fff;
  color: #4c4e58;
  font-family: inherit;
  font-size: .78em;
  line-height: 1;
  box-shadow: 0 2px 5px rgba(29, 31, 39, .05);
}

.key-plus { margin: 0 4px; font-size: 13px; }

.workspace {
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, .85);
  border-radius: 28px;
  padding: 10px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(24px);
  overflow: hidden;
}

.dropzone {
  min-height: 390px;
  padding: 54px 20px;
  border: 1.5px dashed rgba(118, 89, 237, .28);
  border-radius: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(145deg, rgba(250, 249, 255, .92), rgba(246, 248, 255, .72));
  outline: none;
  transition: border-color .2s ease, background .2s ease, transform .2s ease;
}

.dropzone.dragover, .dropzone:focus-visible {
  border-color: var(--purple);
  background: #f6f3ff;
}

.dropzone.dragover { transform: scale(.995); }

.drop-icon {
  width: 64px;
  height: 64px;
  color: var(--purple);
  margin-bottom: 13px;
}

.drop-icon svg { width: 100%; height: 100%; }

.dropzone h2 {
  margin: 0 0 9px;
  font-size: 23px;
  letter-spacing: -.025em;
}

.dropzone > p { margin: 0; color: var(--muted); font-size: 14px; }
.dropzone > p button { border: 0; padding: 0; background: none; color: var(--purple-dark); cursor: pointer; font-weight: 650; }

.paste-hint {
  margin-top: 34px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
}

.paste-hint > span { display: flex; align-items: center; gap: 5px; }
.paste-hint kbd { min-width: 35px; height: 31px; font-size: 14px; }
.paste-hint small { color: #a1a3ac; font-size: 11px; }

.editor {
  min-height: 610px;
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 10px;
}

.panel {
  border-radius: 20px;
  background: #fff;
}

.controls-panel {
  padding: 25px 22px 20px;
  display: flex;
  flex-direction: column;
}

.panel-heading { display: flex; align-items: center; justify-content: space-between; }
.step-label { margin: 0 0 4px; color: var(--purple-dark); font-size: 11px; font-weight: 750; letter-spacing: .09em; text-transform: uppercase; }
.panel-heading h2 { margin: 0; font-size: 22px; letter-spacing: -.03em; }

.icon-button {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fafafe;
  cursor: pointer;
  transition: background .18s, transform .18s;
}
.icon-button:hover { background: var(--soft); transform: translateY(-1px); }
.icon-button svg { width: 18px; }

.control-group { margin-top: 33px; }
.control-label { display: flex; align-items: center; justify-content: space-between; font-size: 13px; font-weight: 620; }
.control-label output { color: var(--purple-dark); font-size: 12px; font-variant-numeric: tabular-nums; }

.range {
  --value: 56%;
  width: 100%;
  height: 4px;
  margin: 18px 0 8px;
  border-radius: 999px;
  background: linear-gradient(to right, var(--purple) var(--value), #e8e8ee var(--value));
  appearance: none;
  outline: none;
}
.range::-webkit-slider-thumb {
  width: 18px;
  height: 18px;
  border: 4px solid #fff;
  border-radius: 50%;
  background: var(--purple);
  appearance: none;
  box-shadow: 0 2px 7px rgba(77, 54, 170, .3);
  cursor: pointer;
}
.range-labels { display: flex; justify-content: space-between; color: #a2a4ad; font-size: 10px; }

.tool-grid {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 7px;
}

.tool {
  min-width: 0;
  min-height: 72px;
  padding: 11px 5px 9px;
  border: 1px solid var(--line);
  border-radius: 13px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 7px;
  color: #6d707a;
  background: #fbfbfd;
  cursor: pointer;
  font-size: 11px;
  transition: border-color .18s, background .18s, color .18s, transform .18s;
}
.tool:hover { transform: translateY(-1px); border-color: rgba(118, 89, 237, .3); }
.tool.active { color: var(--purple-dark); border-color: rgba(118, 89, 237, .38); background: var(--purple-soft); }
.tool svg { width: 21px; height: 21px; }

.brush-controls { margin-top: 24px; }

.tip {
  margin-top: 24px;
  padding: 12px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
  border-radius: 11px;
  color: #777a86;
  background: #f5f5f8;
  font-size: 11px;
  line-height: 1.55;
}
.tip svg { width: 16px; height: 16px; flex: 0 0 auto; margin-top: 1px; color: #989aa4; }

.panel-actions { margin-top: auto; padding-top: 22px; display: grid; grid-template-columns: 64px minmax(0, 1fr) minmax(0, 1fr); gap: 7px; }
.secondary-button, .copy-button, .primary-button {
  height: 43px;
  padding-inline: 6px;
  border-radius: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  border: 0;
  cursor: pointer;
  font-size: 12.5px;
  font-weight: 650;
  white-space: nowrap;
  transition: transform .18s, opacity .18s, box-shadow .18s;
}
.secondary-button { background: #f1f1f5; }
.secondary-button:disabled, .copy-button:disabled { opacity: .42; cursor: default; transform: none; }
.copy-button { color: var(--purple-dark); background: var(--purple-soft); }
.primary-button { color: #fff; background: linear-gradient(135deg, var(--purple), var(--purple-dark)); box-shadow: 0 8px 18px rgba(95, 66, 223, .24); }
.secondary-button svg, .copy-button svg, .primary-button svg { width: 17px; height: 17px; flex: 0 0 auto; }
.copy-button:hover, .primary-button:hover { transform: translateY(-1px); }
.primary-button:hover { box-shadow: 0 10px 24px rgba(95, 66, 223, .3); }

.canvas-panel {
  min-width: 0;
  border-radius: 20px;
  background: #edeef2;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.canvas-toolbar {
  min-height: 58px;
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px solid rgba(31, 33, 41, .08);
  background: rgba(255, 255, 255, .8);
}

.segmented { padding: 3px; display: flex; gap: 2px; border-radius: 10px; background: #ededf2; }
.segmented button { min-width: 59px; height: 29px; padding: 0 11px; border: 0; border-radius: 8px; color: #777984; background: transparent; cursor: pointer; font-size: 11px; }
.segmented button.active { color: var(--ink); background: #fff; box-shadow: 0 1px 5px rgba(35, 37, 45, .1); font-weight: 630; }
.image-meta { color: #8e909a; font-size: 11px; font-variant-numeric: tabular-nums; }

.canvas-stage {
  min-height: 552px;
  flex: 1;
  padding: 26px;
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
  background-color: #e8e9ed;
  background-image: linear-gradient(45deg, #e0e1e5 25%, transparent 25%), linear-gradient(-45deg, #e0e1e5 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #e0e1e5 75%), linear-gradient(-45deg, transparent 75%, #e0e1e5 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0;
}

.canvas-shell {
  position: relative;
  max-width: 100%;
  max-height: 500px;
  line-height: 0;
  box-shadow: 0 12px 42px rgba(32, 34, 44, .16);
  user-select: none;
}

.canvas-shell canvas {
  max-width: 100%;
  max-height: 500px;
  width: auto;
  height: auto;
  display: block;
  object-fit: contain;
}

#originalCanvas { position: absolute; inset: 0; }
.compare-line { position: absolute; top: 0; bottom: 0; left: 50%; width: 2px; background: #fff; box-shadow: 0 0 0 1px rgba(27, 29, 38, .15); pointer-events: none; }
.compare-line span { position: absolute; top: 50%; left: 50%; width: 28px; height: 28px; border-radius: 50%; background: #fff; transform: translate(-50%, -50%); box-shadow: 0 3px 10px rgba(28, 30, 38, .18); }
.compare-line span::before, .compare-line span::after { content: ""; position: absolute; top: 10px; width: 7px; height: 7px; border-left: 1.5px solid #6f7280; border-bottom: 1.5px solid #6f7280; }
.compare-line span::before { left: 7px; transform: rotate(45deg); }
.compare-line span::after { right: 7px; transform: rotate(225deg); }

.brush-cursor { position: absolute; z-index: 5; border: 1.5px solid #fff; border-radius: 50%; box-shadow: 0 0 0 1px rgba(70, 48, 165, .8), 0 2px 8px rgba(0,0,0,.18); pointer-events: none; transform: translate(-50%, -50%); }

.processing { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; gap: 10px; color: #4e5060; background: rgba(235, 236, 241, .82); backdrop-filter: blur(3px); font-size: 13px; }
.spinner { width: 18px; height: 18px; border: 2px solid rgba(118, 89, 237, .18); border-top-color: var(--purple); border-radius: 50%; animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.features {
  padding: 68px 0 82px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 34px;
}
.features article { position: relative; padding-left: 52px; }
.feature-number { position: absolute; left: 0; top: 0; color: rgba(118, 89, 237, .42); font-size: 12px; font-weight: 760; letter-spacing: .07em; }
.features h3 { margin: 0 0 7px; font-size: 16px; letter-spacing: -.015em; }
.features p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.7; }

footer {
  width: min(1180px, calc(100% - 44px));
  margin: 0 auto;
  padding: 20px 0 34px;
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  color: #a1a3ab;
  font-size: 11px;
}
footer a { color: inherit; text-decoration: none; }
footer a:hover { color: var(--ink); }

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  z-index: 20;
  padding: 11px 17px;
  border-radius: 999px;
  color: #fff;
  background: rgba(27, 29, 38, .92);
  font-size: 12px;
  box-shadow: 0 8px 30px rgba(0,0,0,.2);
  opacity: 0;
  transform: translate(-50%, 10px);
  pointer-events: none;
  transition: opacity .2s, transform .2s;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

[hidden] { display: none !important; }

@media (max-width: 850px) {
  .hero { padding-top: 48px; }
  .editor { grid-template-columns: 1fr; }
  .controls-panel { order: 2; }
  .canvas-panel { min-height: 500px; }
  .canvas-stage { min-height: 440px; }
  .panel-actions { margin-top: 28px; }
  .features { grid-template-columns: repeat(2, 1fr); gap: 30px 24px; }
}

@media (max-width: 620px) {
  .topbar, main, footer { width: min(100% - 24px, 1180px); }
  .topbar-actions { gap: 4px; }
  .back-link { padding-inline: 7px; font-size: 12px; }
  .privacy-pill { font-size: 0; width: 35px; height: 35px; justify-content: center; padding: 0; }
  .hero { padding: 42px 0 32px; }
  .hero h1 { font-size: 42px; }
  .hero p { font-size: 14px; }
  .workspace { border-radius: 22px; padding: 7px; }
  .dropzone { min-height: 350px; }
  .canvas-toolbar { align-items: flex-start; flex-direction: column; justify-content: center; padding: 10px 12px; }
  .canvas-stage { padding: 12px; min-height: 390px; }
  .panel-actions { grid-template-columns: 62px minmax(0, 1fr) minmax(0, 1fr); }
  .secondary-button, .copy-button, .primary-button { font-size: 12px; }
  .features { grid-template-columns: 1fr; padding: 48px 6px 58px; }
}