:root {
  color-scheme: dark;
  font-family: system-ui, sans-serif;
  background: #11151b;
  color: #edf2f7;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
}

header,
main {
  width: min(1400px, calc(100% - 2rem));
  margin-inline: auto;
}

header {
  padding: 1rem 0;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0.35rem;
  font-size: 1.6rem;
}

h2 {
  font-size: 1.1rem;
}

.controls {
  padding: 1rem;
  background: #1b232e;
  border: 1px solid #344354;
  border-radius: 0.4rem;
}

form {
  display: grid;
  grid-template-columns: minmax(18rem, 3fr) repeat(3, minmax(8rem, 1fr));
  gap: 0.8rem;
  align-items: start;
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.9rem;
}

input,
select,
button {
  min-height: 2.5rem;
  border-radius: 0.25rem;
  font: inherit;
}

input,
select {
  width: 100%;
  padding: 0.45rem 0.6rem;
  border: 1px solid #60748c;
  background: #0d1117;
  color: #fff;
}

button {
  padding: 0.45rem 0.9rem;
  border: 1px solid #70a7d8;
  background: #185b91;
  color: #fff;
  cursor: pointer;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.image-picker {
  display: flex;
  gap: 0.5rem;
}

.image-picker select {
  min-width: 0;
}

.actions {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

#status {
  margin: 0.8rem 0 0;
}

.viewer-section {
  margin: 1rem 0;
}

#viewer {
  width: 100%;
  height: min(72vh, 900px);
  min-height: 24rem;
  background: #050607;
  border: 1px solid #344354;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(6, minmax(8rem, 1fr));
  gap: 0.7rem;
  margin: 0 0 1rem;
}

.metrics div {
  padding: 0.8rem;
  background: #1b232e;
  border-radius: 0.3rem;
}

.metrics dt {
  color: #b8c7d8;
  font-size: 0.85rem;
}

.metrics dd {
  margin: 0.3rem 0 0;
  font-variant-numeric: tabular-nums;
}

.hint {
  color: #b8c7d8;
  font-size: 0.85rem;
}

#results {
  max-height: 24rem;
  overflow: auto;
  padding: 1rem;
  background: #0d1117;
  border: 1px solid #344354;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

#results:empty {
  display: none;
}

@media (max-width: 900px) {
  form {
    grid-template-columns: 1fr 1fr;
  }

  .image-field {
    grid-column: 1 / -1;
  }

  .metrics {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 520px) {
  form {
    grid-template-columns: 1fr;
  }

  .image-field {
    grid-column: auto;
  }
}