:root {
  --ink: #0c1110;
  --panel: rgba(18, 26, 24, 0.78);
  --line: rgba(120, 220, 170, 0.18);
  --phosphor: #3dffb0;
  --phosphor-dim: #1aa875;
  --mist: #c8d5cf;
  --muted: #7a8f86;
  --danger: #ff6b6b;
  --radius: 18px;
  --font-display: "Syne", system-ui, sans-serif;
  --font-ui: "Instrument Sans", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  color: var(--mist);
  font-family: var(--font-ui);
  background: var(--ink);
}

body {
  overflow-x: hidden;
}

.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(61, 255, 176, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(61, 255, 176, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 20%, #000 20%, transparent 75%);
  pointer-events: none;
  z-index: 0;
}

.bg-glow {
  position: fixed;
  inset: -20% 10% auto;
  height: 55vh;
  background:
    radial-gradient(ellipse at 30% 40%, rgba(26, 168, 117, 0.28), transparent 55%),
    radial-gradient(ellipse at 70% 30%, rgba(61, 255, 176, 0.12), transparent 50%);
  filter: blur(8px);
  pointer-events: none;
  z-index: 0;
  animation: drift 14s ease-in-out infinite alternate;
}

@keyframes drift {
  from { transform: translateY(0) scale(1); opacity: 0.9; }
  to { transform: translateY(18px) scale(1.05); opacity: 1; }
}

.steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  margin-bottom: 4px;
}

.step {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.25);
  color: var(--muted);
  font-size: 0.92rem;
}

.step i {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 12px;
  border: 1px solid var(--line);
  color: var(--muted);
}

.step.active {
  border-color: rgba(61, 255, 176, 0.45);
  color: #e8f6ee;
  box-shadow: inset 0 0 24px rgba(61, 255, 176, 0.06);
}

.step.active i {
  background: var(--phosphor);
  color: #04140e;
  border-color: var(--phosphor);
}

.step.done {
  color: var(--phosphor-dim);
}

.step.done i {
  border-color: var(--phosphor-dim);
  color: var(--phosphor);
}

.confirm-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: end;
  margin-bottom: 14px;
  padding: 14px;
  border: 1px solid rgba(61, 255, 176, 0.28);
  border-radius: 12px;
  background: rgba(26, 168, 117, 0.08);
}

.confirm-bar .field.grow {
  flex: 1 1 220px;
}

.btn.primary.confirm {
  width: auto;
  min-width: 140px;
  padding: 12px 18px;
}

.confirm-status {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--phosphor);
  width: 100%;
}

.confirm-status.ok {
  color: var(--phosphor);
}

.dl {
  color: var(--phosphor);
  font-size: 13px;
  text-decoration: underline;
  padding-bottom: 10px;
}

.preview-box {
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: auto;
  background: #050807;
  max-height: min(78vh, 920px);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8px;
}

.preview-box img {
  display: block;
  width: auto;
  max-width: 100%;
  max-height: none;
  object-fit: contain;
}

.preview-stage {
  position: relative;
  display: block;
  width: fit-content;
  max-width: 100%;
  margin: 0 auto;
  line-height: 0;
}

.preview-stage img {
  width: auto;
  max-width: 100%;
  /* 标定需要看清底栏，高度放宽到视口 */
  max-height: min(72vh, 880px);
  height: auto;
  object-fit: contain;
}

.preview-box.calib-focus .preview-stage img {
  /* 标定时尽量完整显示含底栏的全图 */
  max-height: min(78vh, 960px);
}

.calib-canvas {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  cursor: crosshair;
  touch-action: none;
}

.calib-hint {
  margin: 8px 0 0;
  font-size: 12px;
  color: var(--muted, #8aa);
  font-family: var(--font-mono);
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: end;
}

.field.inline {
  min-width: 110px;
}

.calib-info {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--phosphor);
  padding-bottom: 8px;
}

.recommend-tip {
  grid-column: 1 / -1;
  margin: 0;
  font-size: 12px;
  color: var(--phosphor, #7dffc8);
  font-family: var(--font-mono);
  opacity: 0.9;
}

#colorPick {
  width: 36px;
  height: 32px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: transparent;
  padding: 0;
  cursor: pointer;
}

@media (max-width: 720px) {
  .steps { grid-template-columns: 1fr 1fr; }
}

.shell {
  position: relative;
  z-index: 1;
  max-width: 1120px;
  margin: 0 auto;
  padding: clamp(28px, 5vw, 56px) 24px 48px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.hero {
  text-align: center;
  animation: rise 0.7s ease-out both;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

.eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--phosphor-dim);
}

.brand {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.4rem, 7vw, 4.2rem);
  letter-spacing: -0.03em;
  line-height: 0.95;
  color: #eef8f2;
  text-shadow: 0 0 40px rgba(61, 255, 176, 0.25);
}

.tagline {
  margin: 14px 0 0;
  font-size: 1.05rem;
  color: var(--muted);
}

.stage {
  display: grid;
  gap: 18px;
  animation: rise 0.85s ease-out 0.08s both;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  backdrop-filter: blur(14px);
  padding: 22px;
}

.drop {
  display: grid;
  gap: 18px;
}

.drop-inner {
  position: relative;
  min-height: 200px;
  border: 1.5px dashed rgba(61, 255, 176, 0.35);
  border-radius: 14px;
  display: grid;
  place-content: center;
  text-align: center;
  gap: 8px;
  padding: 28px 16px;
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
  cursor: pointer;
  overflow: hidden;
}

.drop-inner.drag {
  border-color: var(--phosphor);
  background: rgba(61, 255, 176, 0.06);
  box-shadow: inset 0 0 40px rgba(61, 255, 176, 0.08);
}

.scan-ring {
  width: 56px;
  height: 56px;
  margin: 0 auto 6px;
  border-radius: 50%;
  border: 2px solid rgba(61, 255, 176, 0.35);
  box-shadow: 0 0 0 8px rgba(61, 255, 176, 0.05);
  position: relative;
}

.scan-ring::after {
  content: "";
  position: absolute;
  inset: 10px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--phosphor), transparent 70%);
  opacity: 0.55;
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(0.85); opacity: 0.35; }
  50% { transform: scale(1.05); opacity: 0.7; }
}

.drop-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: #e8f6ee;
}

.drop-hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.file-name {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--phosphor);
  min-height: 1.2em;
}

.controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
  align-items: end;
}

.field {
  display: grid;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
}

.field input {
  width: 100%;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.35);
  color: var(--mist);
  border-radius: 10px;
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  outline: none;
}

.field input:focus {
  border-color: rgba(61, 255, 176, 0.55);
  box-shadow: 0 0 0 3px rgba(61, 255, 176, 0.12);
}

.check {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 10px;
  color: var(--muted);
  font-size: 13px;
  user-select: none;
}

.btn {
  border: none;
  border-radius: 999px;
  padding: 12px 22px;
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.15s, opacity 0.15s, box-shadow 0.15s;
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn:not(:disabled):hover {
  transform: translateY(-1px);
}

.btn.primary {
  background: linear-gradient(135deg, #2dffb0, #14a873);
  color: #04140e;
  box-shadow: 0 10px 30px rgba(26, 168, 117, 0.28);
  width: 100%;
  padding: 14px 22px;
  font-size: 1rem;
  letter-spacing: 0.02em;
}

.btn.primary.busy {
  animation: shimmer 1.4s linear infinite;
  background-size: 200% 100%;
  background-image: linear-gradient(90deg, #14a873, #2dffb0, #14a873);
}

@keyframes shimmer {
  from { background-position: 100% 0; }
  to { background-position: -100% 0; }
}

.btn.ghost {
  background: transparent;
  color: var(--phosphor);
  border: 1px solid rgba(61, 255, 176, 0.4);
  margin-top: 6px;
}

.result-top {
  display: grid;
  gap: 14px;
  margin-bottom: 16px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 10px;
}

.stat {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  background: rgba(0, 0, 0, 0.28);
}

.stat .k {
  display: block;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 4px;
}

.stat .v {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  color: #eaf8f0;
}

.stat .v.accent { color: var(--phosphor); }

.progress-wrap { display: grid; gap: 8px; }

.progress-bar {
  height: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  overflow: hidden;
}

.progress-bar i {
  display: block;
  height: 100%;
  width: 0%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--phosphor-dim), var(--phosphor));
  transition: width 0.35s ease;
}

.progress-msg {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

.viewer {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 14px;
}

@media (max-width: 860px) {
  .viewer { grid-template-columns: 1fr; }
}

.frame {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: #050807;
}

.frame figcaption {
  padding: 10px 12px;
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
}

.frame > img {
  display: block;
  width: 100%;
  max-height: 420px;
  object-fit: contain;
  background: #050807;
}

.btn.tiny {
  width: auto;
  padding: 8px 14px;
  font-size: 0.85rem;
  border-radius: 999px;
  background: rgba(61, 255, 176, 0.12);
  color: var(--phosphor);
  border: 1px solid rgba(61, 255, 176, 0.35);
}

.btn.tiny.danger {
  background: rgba(255, 107, 107, 0.12);
  color: #ff9b9b;
  border-color: rgba(255, 107, 107, 0.4);
}

.btn.tiny:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.field select {
  width: 100%;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.35);
  color: var(--mist);
  border-radius: 10px;
  padding: 10px 12px;
  font-family: var(--font-ui);
  font-size: 13px;
  outline: none;
}

.edit-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-bottom: 14px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.28);
}

.edit-modes {
  display: flex;
  gap: 6px;
}

.chip {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  border-radius: 999px;
  padding: 7px 12px;
  font-size: 12px;
  cursor: pointer;
}

.chip.active {
  color: #04140e;
  background: var(--phosphor);
  border-color: var(--phosphor);
}

.edit-hint {
  font-size: 12px;
  color: var(--muted);
}

.sel-tags {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--phosphor);
}

.canvas-box {
  position: relative;
  background: #050807;
}

.canvas-box img {
  display: block;
  width: 100%;
  max-height: 520px;
  object-fit: contain;
}

.canvas-box canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  cursor: crosshair;
}

.out-path {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  word-break: break-all;
}

.foot {
  margin-top: auto;
  display: flex;
  justify-content: center;
  gap: 8px;
  color: var(--muted);
  font-size: 12px;
  opacity: 0.85;
}

.foot .dot { opacity: 0.5; }

.error-banner {
  border: 1px solid rgba(255, 107, 107, 0.45);
  background: rgba(255, 107, 107, 0.08);
  color: #ffc9c9;
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 13px;
  white-space: pre-wrap;
}