:root {
  color-scheme: light;
  --paper: #f6f7f9;
  --panel: #ffffff;
  --ink: #22242a;
  --muted: #737780;
  --line: #e7e9ee;
  --line-strong: #d9dde5;
  --accent: #d94382;
  --accent-strong: #be2b6c;
  --soft: #fff1f7;
  --soft-strong: #ffe5f0;
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  background: var(--paper);
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--paper);
  color: var(--ink);
}

button,
select,
input {
  font: inherit;
}

button,
.file-button,
select {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
}

button,
.file-button {
  min-height: 40px;
  padding: 0 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

button:active,
.file-button:active {
  transform: translateY(1px);
}

.app {
  width: min(900px, 100%);
  margin: 0 auto;
  padding: max(12px, env(safe-area-inset-top)) 10px 22px;
}

.version-banner {
  display: none;
}

.hero {
  padding: 12px 4px 10px;
  text-align: center;
}

.app-logo {
  display: block;
  width: 72px;
  height: 72px;
  margin: 0 auto 8px;
  border-radius: 18px;
  object-fit: cover;
}

.hero h1 {
  margin: 0;
  font-size: clamp(26px, 7vw, 36px);
  line-height: 1.15;
  letter-spacing: 0;
}

.hero p {
  max-width: 620px;
  margin: 8px auto 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

.tool-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  max-width: 520px;
  margin: 8px auto 10px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.tool-tabs button {
  min-height: 38px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  font-size: 16px;
}

.tool-tabs button.is-active {
  background: var(--soft);
  color: var(--accent-strong);
}

.industrial-panel {
  margin: 0 0 10px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.industrial-search {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr) 108px;
  gap: 8px;
}

.industrial-search label {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 6px;
  min-height: 40px;
  padding: 0 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.industrial-search select,
.industrial-search input {
  width: 100%;
  min-width: 0;
  height: 30px;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
  font-weight: 800;
}

.industrial-search button {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.industrial-calibration {
  display: grid;
  gap: 8px;
  margin-top: 10px;
}

.lab-inputs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr)) 112px;
  gap: 8px;
}

.lab-inputs label {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  align-items: center;
  gap: 6px;
  min-height: 38px;
  padding: 0 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.lab-inputs input,
.industrial-calibration textarea {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
  font-weight: 800;
}

.industrial-calibration textarea {
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  resize: vertical;
  font-size: 12px;
  line-height: 1.5;
}

.lab-inputs button,
#importColorantsButton {
  border-color: var(--line);
  background: #fff;
  color: var(--accent-strong);
}

h2 {
  margin: 0;
  font-size: 17px;
  line-height: 1.35;
  letter-spacing: 0;
}

.camera-panel,
.panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.camera-panel {
  overflow: hidden;
}

.controls {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  padding: 8px;
  border-bottom: 1px solid var(--line);
  background: #fff;
}

.file-button {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.file-button.secondary {
  background: #fff;
  color: var(--accent-strong);
}

.file-button input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.canvas-wrap {
  position: relative;
  aspect-ratio: 16 / 3;
  width: 100%;
  min-height: 108px;
  max-height: 168px;
  background: #f2f3f5;
  overflow: hidden;
  touch-action: none;
  cursor: crosshair;
  user-select: none;
}

.canvas-wrap.has-image {
  min-height: 0;
  max-height: none;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.empty-state {
  position: absolute;
  inset: 10px;
  display: grid;
  place-content: center;
  gap: 5px;
  text-align: center;
  color: var(--muted);
  border: 1px dashed #d9a9c0;
  border-radius: 8px;
  background: #fff;
  pointer-events: none;
}

.empty-state strong {
  color: var(--ink);
  font-size: 17px;
}

.empty-state span {
  font-size: 13px;
}

.canvas-wrap:not(.has-image) {
  cursor: pointer;
}

.picker-dot {
  position: absolute;
  z-index: 2;
  width: 38px;
  height: 38px;
  margin: -19px 0 0 -19px;
  border: 4px solid #fff;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.18), 0 0 0 1px rgba(0, 0, 0, 0.16);
  pointer-events: none;
}

.picker-dot::before,
.picker-dot::after {
  display: none;
}

.below-tip {
  margin: 10px 0 8px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

.image-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  max-width: 340px;
  margin: 0 auto 10px;
  padding: 0 10px;
}

.image-actions button {
  min-height: 42px;
  gap: 6px;
  border: 1px solid var(--line);
  background: #fff;
  color: #4d515a;
  font-size: 14px;
}

.image-actions span {
  color: var(--accent);
  font-size: 20px;
  line-height: 1;
}

.result-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.84fr) minmax(0, 1.16fr);
  gap: 10px;
  margin-top: 10px;
}

.panel {
  padding: 12px;
}

.panel-heading,
.palette-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
}

.amount-input,
.scheme-select {
  display: grid;
  grid-template-columns: auto minmax(68px, 88px) 66px;
  align-items: center;
  gap: 5px;
  min-height: 38px;
  padding: 0 6px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.scheme-select {
  grid-template-columns: auto 118px;
}

.clear-palette {
  min-height: 38px;
  padding: 0 10px;
  border-color: var(--line);
  color: var(--accent-strong);
  background: #fff;
}

.amount-input input {
  width: 100%;
  min-width: 0;
  height: 30px;
  border: 0;
  outline: 0;
  color: var(--ink);
  background: transparent;
  text-align: right;
  font-weight: 800;
}

.amount-input select,
.scheme-select select {
  width: 100%;
  height: 30px;
  border: 0;
  outline: 0;
  background: var(--soft);
  color: var(--accent-strong);
  border-radius: 6px;
  font-weight: 800;
  text-align: center;
}

.readout-row {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  margin-top: 8px;
}

.readout-row span,
.mix-preview span,
.hint {
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 0;
}

.copy-value {
  min-height: 40px;
  justify-content: flex-start;
  overflow-wrap: anywhere;
  border-color: var(--line);
  background: #fafafa;
  font-size: 15px;
}

.mix-list {
  display: grid;
  gap: 8px;
}

.mix-now {
  width: 100%;
  min-height: 44px;
  margin: 0 0 10px;
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
  font-size: 16px;
}

.analysis-loading {
  min-height: 112px;
  display: grid;
  place-items: center;
  gap: 10px;
  color: var(--accent-strong);
  font-weight: 800;
  text-align: center;
}

.analysis-loading i {
  width: 34px;
  height: 34px;
  border: 3px solid var(--soft-strong);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.mix-row {
  display: grid;
  grid-template-columns: 24px minmax(72px, 1fr) minmax(80px, 1.05fr) 46px 66px;
  align-items: center;
  gap: 8px;
}

.mix-row strong {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 15px;
}

.mix-row em {
  padding: 1px 5px;
  border-radius: 999px;
  background: var(--soft);
  color: var(--accent-strong);
  font-size: 11px;
  font-style: normal;
}

.paint-dot,
.palette-dot {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1px solid rgba(0, 0, 0, 0.16);
}

.bar {
  height: 9px;
  border-radius: 999px;
  background: #ebe7eb;
  overflow: hidden;
}

.bar i {
  display: block;
  height: 100%;
  background: var(--accent);
}

.percent,
.grams {
  text-align: right;
  font-weight: 800;
}

.grams {
  color: var(--accent-strong);
}

.mix-preview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 12px;
}

.mix-preview div {
  display: grid;
  gap: 6px;
}

.mix-preview i {
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.mix-preview b {
  min-height: 20px;
  color: var(--ink);
  font-size: 13px;
  line-height: 1.3;
  word-break: break-word;
}

.palette-panel {
  margin-top: 10px;
}

.palette-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(104px, 1fr));
  gap: 7px;
  margin-top: 10px;
}

.palette-item {
  position: relative;
  display: grid;
  grid-template-columns: 22px 1fr 16px;
  align-items: center;
  gap: 7px;
  min-height: 38px;
  padding: 7px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  font-size: 14px;
  cursor: pointer;
  user-select: none;
}

.palette-item input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.palette-item.is-selected {
  border-color: var(--accent);
  background: var(--soft);
}

.palette-item.is-fixed {
  cursor: default;
}

.check-mark {
  width: 16px;
  height: 16px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: #fff;
}

.palette-item.is-selected .check-mark {
  border-color: var(--accent);
  background: radial-gradient(circle at center, var(--accent) 0 45%, #fff 48% 100%);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: max(18px, env(safe-area-inset-bottom));
  transform: translateX(-50%);
  padding: 9px 13px;
  border-radius: 999px;
  background: #22242a;
  color: #fff;
  font-weight: 700;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.toast.show {
  opacity: 1;
}

.site-footer {
  padding: 18px 8px 4px;
  text-align: center;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.65;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 680px) {
  .app {
    padding-left: 8px;
    padding-right: 8px;
  }

  .hero {
    padding-top: 10px;
  }

  .hero p {
    font-size: 13px;
  }

  .tool-tabs button {
    font-size: 15px;
  }

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

  .industrial-search {
    grid-template-columns: 1fr;
  }

  .lab-inputs {
    grid-template-columns: 1fr 1fr;
  }

  .lab-inputs button {
    grid-column: 1 / -1;
  }

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

  .panel-heading {
    align-items: center;
  }

  .palette-heading {
    display: grid;
    grid-template-columns: 1fr;
  }

  .scheme-select {
    grid-template-columns: auto 1fr;
  }

  .mix-row {
    grid-template-columns: 22px minmax(58px, 0.86fr) minmax(56px, 0.8fr) 38px 54px;
    gap: 6px;
    font-size: 13px;
  }

  .mix-row strong {
    font-size: 14px;
  }

  .palette-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}