:root {
  color-scheme: light;
  --panel: rgba(255, 255, 255, 0.92);
  --ink: #17202a;
  --muted: #5d6673;
  --line: rgba(23, 32, 42, 0.16);
  --active: #2f6f73;
  --active-ink: #ffffff;
  --control: #f4f6f7;
  --site: #d8e2dc;
}

* {
  box-sizing: border-box;
}

html,
body,
#app {
  width: 100%;
  height: 100%;
  margin: 0;
}

body {
  overflow: hidden;
  background: var(--site);
  color: var(--ink);
  font-family: Arial, sans-serif;
}

#viewer {
  display: block;
  width: 100vw;
  height: 100vh;
  outline: none;
}

.panel {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 2;
  width: min(320px, calc(100vw - 24px));
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  box-shadow: 0 8px 24px rgba(20, 28, 38, 0.12);
}

.heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

h1 {
  margin: 0;
  font-size: 14px;
  line-height: 1.2;
}

p {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.status {
  min-width: 52px;
  padding-top: 1px;
  color: var(--muted);
  font-size: 11px;
  text-align: right;
}

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

.label {
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.segmented {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--control);
}

button,
.toggle {
  min-height: 34px;
  border: 1px solid transparent;
  border-radius: 4px;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 13px;
}

button {
  cursor: pointer;
}

button.active {
  background: var(--active);
  color: var(--active-ink);
}

.toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 10px;
  border-color: var(--line);
  background: var(--control);
}

.toggle.disabled {
  opacity: 0.45;
}

.slider {
  display: grid;
  grid-template-columns: 1fr 72px;
  align-items: center;
  gap: 10px;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--active);
}

.value {
  min-width: 0;
  color: var(--muted);
  font-size: 12px;
  text-align: right;
}

input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--active);
}

.error {
  display: none;
  margin-top: 10px;
  padding: 8px;
  border: 1px solid rgba(142, 38, 38, 0.25);
  border-radius: 4px;
  background: rgba(142, 38, 38, 0.08);
  color: #702323;
  font-size: 12px;
  line-height: 1.35;
}

.error.visible {
  display: block;
}