.efc {
  --efc-bg: #f4f6f5;
  --efc-panel: #fff;
  --efc-panel-soft: #eef2f1;
  --efc-ink: #17211f;
  --efc-muted: #62716d;
  --efc-line: rgba(29, 44, 40, 0.14);
  --efc-accent: #147b5a;
  --efc-accent-soft: rgba(20, 123, 90, 0.12);
  --efc-warn: #9c6c13;
  --efc-red: #a8423b;

  width: 100%;
  color: var(--efc-ink);
  background: var(--efc-bg);
  border: 1px solid var(--efc-line);
  border-radius: 8px;
  padding: clamp(14px, 2vw, 22px);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.72);
}

.theme-dark .efc {
  --efc-bg: #121615;
  --efc-panel: #1b211f;
  --efc-panel-soft: #232b28;
  --efc-ink: #edf3f1;
  --efc-muted: #a7b4b0;
  --efc-line: rgba(233, 242, 239, 0.12);
  --efc-accent: #78d7b0;
  --efc-accent-soft: rgba(120, 215, 176, 0.14);
  --efc-warn: #e5c15e;
  --efc-red: #ef8b83;

  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04), 0 18px 48px rgba(0, 0, 0, 0.28);
}

.efc button,
.efc input {
  font: inherit;
}

.efc-toolbar,
.efc-grid,
.efc-readouts,
.efc-duo {
  display: grid;
  gap: 12px;
}

.efc-toolbar {
  grid-template-columns: 1fr auto;
  align-items: center;
  margin-bottom: 14px;
}

.efc-segments,
.efc-units {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.efc-segments button,
.efc-units button,
.efc-panel button {
  border: 1px solid var(--efc-line);
  color: var(--efc-ink);
  background: var(--efc-panel);
  border-radius: 6px;
  padding: 0.62rem 0.78rem;
  cursor: pointer;
}

.efc-segments button.active,
.efc-units button.active {
  color: var(--efc-ink);
  background: var(--efc-accent-soft);
  border-color: var(--efc-accent);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--efc-accent) 35%, transparent);
}

.efc-grid {
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  grid-template-areas:
    "scope panel"
    "controls controls";
}

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

.efc-scope {
  grid-area: scope;
  position: relative;
  min-height: 320px;
  overflow: hidden;
}

.efc-scope canvas {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 320px;
}

.efc-legend {
  position: absolute;
  left: 16px;
  bottom: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--efc-muted);
  font-size: 0.82rem;
}

.efc-legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.efc-legend i {
  width: 30px;
  border-top: 3px solid currentcolor;
}

.efc-legend i.dashed {
  border-top-style: dashed;
  color: var(--efc-accent);
}

.efc-panel {
  grid-area: panel;
  padding: 16px;
}

.efc-verdict {
  border-left: 4px solid var(--efc-warn);
  border-radius: 6px;
  padding: 4px 0 14px 12px;
  margin-bottom: 14px;
}

.efc-verdict[data-state="optimal"] {
  border-color: var(--efc-accent);
}

.efc-verdict[data-state="severe"] {
  border-color: var(--efc-red);
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--efc-red) 18%, transparent), transparent 78%);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--efc-red) 30%, transparent);
  padding: 12px 12px 14px 14px;
}

.efc-verdict[data-state="severe"] strong {
  color: var(--efc-red);
}

.efc-verdict span,
.efc-readouts span,
.efc-command span,
.efc-control span,
.efc-duo span {
  display: block;
  color: var(--efc-muted);
  font-size: 0.78rem;
  text-transform: uppercase;
}

.efc-verdict strong {
  display: block;
  margin-top: 6px;
  color: var(--efc-ink);
  font-size: clamp(1.1rem, 2vw, 1.55rem);
  line-height: 1.1;
}

.efc-readouts {
  grid-template-columns: repeat(3, 1fr);
  margin-bottom: 14px;
}

.efc-readouts div,
.efc-command {
  border: 1px solid var(--efc-line);
  border-radius: 6px;
  padding: 12px;
}

.efc-readouts strong {
  display: flex;
  align-items: baseline;
  gap: 5px;
  color: var(--efc-accent);
  font: 700 clamp(1.05rem, 2vw, 1.35rem) / 1.2 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  margin-top: 6px;
}

.efc-command {
  margin-top: 10px;
}

.efc-command code {
  display: block;
  margin-top: 6px;
  color: var(--efc-accent);
  white-space: normal;
}

.efc-panel button {
  width: 100%;
  margin-top: 14px;
  background: var(--efc-panel-soft);
  color: var(--efc-ink);
  border-color: var(--efc-line);
}

.efc-controls {
  grid-area: controls;
  display: grid;
  grid-template-columns: repeat(3, 1fr) minmax(260px, 0.8fr);
  gap: 14px;
  padding: 16px;
}

.efc-control {
  display: grid;
  gap: 10px;
}

.efc-control input[type="range"] {
  accent-color: var(--efc-accent);
}

.efc-control output,
.efc-duo label {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 8px;
}

.efc-control output input,
.efc-duo input {
  min-width: 0;
  width: 100%;
  border: 1px solid var(--efc-line);
  border-radius: 6px;
  background: transparent;
  color: var(--efc-ink);
  padding: 0.6rem;
}

.efc-control b,
.efc-duo b {
  color: var(--efc-muted);
  font-weight: 600;
}

.efc-duo {
  grid-template-columns: 1fr;
}

.efc-duo label {
  grid-template-columns: minmax(0, 1fr) max-content;
}

.efc-duo label span {
  grid-column: 1 / -1;
}

.efc-duo b {
  min-width: 2.4ch;
  text-align: left;
  white-space: nowrap;
}

@media (max-width: 900px) {
  .efc-toolbar,
  .efc-grid,
  .efc-controls {
    grid-template-columns: 1fr;
    grid-template-areas: none;
  }

  .efc-scope,
  .efc-panel,
  .efc-controls {
    grid-area: auto;
  }

  .efc-readouts {
    grid-template-columns: 1fr;
  }
}