:root {
  color-scheme: light;
  font-family: Inter, Arial, Helvetica, sans-serif;
  background: #f4f1ed;
  color: #24211f;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  min-height: 100vh;
  background: #f4f1ed;
}

button,
input,
select {
  font: inherit;
}

.login-view {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 1rem;
}

.login-card {
  display: grid;
  gap: 1rem;
  width: min(100%, 24rem);
  padding: 1.25rem;
  border: 1px solid #d9d1c6;
  border-radius: 8px;
  background: #fffdfa;
}

.login-card h1 {
  margin: 0 0 0.25rem;
  font-size: 1.6rem;
  line-height: 1.1;
}

.login-card label {
  display: grid;
  gap: 0.4rem;
}

.login-card input {
  min-height: 2.6rem;
  width: 100%;
  border: 1px solid #bfb3a6;
  border-radius: 6px;
  padding: 0 0.75rem;
  background: #ffffff;
  color: #24211f;
}

.app-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.25rem clamp(1rem, 3vw, 2rem);
  border-bottom: 1px solid #d9d1c6;
  background: #fffdfa;
}

.app-header h1,
.app-header p {
  margin: 0;
}

.app-header h1 {
  font-size: clamp(1.35rem, 2.4vw, 2.1rem);
  line-height: 1.1;
}

.app-header p {
  margin-top: 0.35rem;
  color: #645b53;
}

.user-menu {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: #4e4741;
  font-weight: 800;
}

label,
figcaption {
  color: #4e4741;
  font-size: 0.92rem;
  font-weight: 700;
}

select,
button {
  min-height: 2.5rem;
  border: 1px solid #bfb3a6;
  border-radius: 6px;
  background: #ffffff;
  color: #24211f;
}

select {
  padding: 0 0.75rem;
}

button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 1rem;
  border-color: #2f6f5e;
  background: #2f6f5e;
  color: #ffffff;
  cursor: pointer;
  font-weight: 800;
}

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

.secondary-button {
  background: #ffffff;
  border-color: #bfb3a6;
  color: #24211f;
}

.workspace {
  display: grid;
  gap: 1rem;
  padding: 1rem clamp(1rem, 3vw, 2rem) 2rem;
}

.panel {
  border: 1px solid #d9d1c6;
  border-radius: 8px;
  background: #fffdfa;
  padding: clamp(1rem, 2vw, 1.25rem);
}

.section-heading {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.section-heading h2,
.section-heading p {
  margin: 0;
}

.section-heading h2 {
  font-size: 1.08rem;
  line-height: 1.2;
}

.section-heading p {
  margin-top: 0.3rem;
  color: #675e56;
}

.section-actions,
.image-nav,
.line-actions {
  display: flex;
  gap: 0.75rem;
}

.status-message {
  min-height: 1.2rem;
  margin-bottom: 0.85rem;
  color: #4e4741;
  font-size: 0.92rem;
  font-weight: 700;
}

.status-message.error {
  color: #9f3529;
}

.calibration-grid {
  display: grid;
  grid-template-columns: minmax(24rem, 1.15fr) minmax(18rem, 0.85fr);
  gap: 1rem;
}

.calibration-reference {
  display: grid;
  gap: 0.75rem;
}

.chart-preview {
  min-height: 16rem;
  padding: 1rem;
  border: 1px solid #d4cabd;
  border-radius: 8px;
  background: #eee8df;
}

.target-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.5rem;
  height: 100%;
}

.patch {
  display: grid;
  align-items: end;
  justify-content: stretch;
  width: 100%;
  min-height: 4.6rem;
  padding: 0.45rem;
  border: 1px solid rgba(0, 0, 0, 0.14);
  border-radius: 6px;
  background: #9f3529;
  color: #ffffff;
  font-size: 0.72rem;
  line-height: 1.1;
  text-align: left;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.55);
}

.patch:hover,
.patch:focus-visible,
.patch.selected {
  border-color: #111111;
  box-shadow: 0 0 0 3px rgba(47, 111, 94, 0.28);
  outline: none;
}

.calibration-tip {
  min-height: 5.4rem;
  padding: 0.85rem 0.95rem;
  border: 1px solid #d4cabd;
  border-radius: 8px;
  background: #fffdfa;
  color: #4e4741;
}

.calibration-tip strong {
  display: block;
  margin-bottom: 0.35rem;
  color: #24211f;
}

.calibration-tip p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.45;
}

.controls,
.threshold-controls {
  display: grid;
  gap: 0.8rem;
}

.controls label,
.threshold-controls label {
  display: grid;
  grid-template-columns: 7.5rem 1fr 3rem;
  align-items: center;
  gap: 0.75rem;
}

input[type="range"] {
  width: 100%;
  accent-color: #9f3529;
}

output {
  color: #24211f;
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.image-picker {
  display: grid;
  gap: 0.6rem;
  min-width: min(100%, 24rem);
}

.image-picker label {
  display: grid;
  gap: 0.35rem;
}

.review-grid {
  display: grid;
  grid-template-columns: minmax(18rem, 1fr) minmax(18rem, 0.8fr) minmax(18rem, 1fr);
  gap: 1rem;
  align-items: start;
}

figure {
  display: grid;
  gap: 0.5rem;
  margin: 0;
}

canvas {
  width: 100%;
  border: 1px solid #d4cabd;
  border-radius: 8px;
  background: #f7f2ea;
}

#sourceCanvas,
#resultCanvas {
  aspect-ratio: 32 / 21;
}

#matrixCanvas {
  aspect-ratio: 38 / 31;
}

.threshold-controls {
  grid-template-columns: repeat(2, minmax(14rem, 24rem));
  margin-top: 1rem;
}

.line-pick-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1rem;
  padding: 0.75rem 0.9rem;
  border: 1px solid #d4cabd;
  border-radius: 8px;
  background: #f7f2ea;
  color: #4e4741;
  font-weight: 700;
}

.line-pick-bar button {
  min-height: 2rem;
  min-width: 7rem;
  padding: 0 0.75rem;
}

@media (max-width: 1100px) {
  .review-grid,
  .calibration-grid,
  .threshold-controls {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .app-header,
  .section-heading {
    display: grid;
  }

  .user-menu {
    justify-content: space-between;
  }

  .target-strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .controls label,
  .threshold-controls label {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  .line-pick-bar {
    align-items: stretch;
    display: grid;
  }

  .line-actions,
  .section-actions,
  .image-nav {
    display: grid;
    grid-template-columns: 1fr;
  }

  output {
    text-align: left;
  }
}