.app {
  width: min(720px, 100%);
  margin: 0 auto;
  padding: 16px 14px 40px;
}

.panel {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 16px;
}

.stack,
.step-header,
.review-group {
  display: grid;
  gap: 12px;
}

.language-field {
  display: grid;
  gap: 6px;
  justify-self: start;
}

.language-field span,
.step-count,
.stack p {
  color: var(--muted);
}

.language-field span,
.step-count {
  font-size: 0.95rem;
}

.language-field select,
.note-input,
button {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
}

.language-field select {
  min-height: 42px;
  padding: 8px 10px;
}

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

.step-header h1 {
  font-size: 1.45rem;
  line-height: 1.15;
}

.scale-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(48px, 1fr));
  gap: 8px;
  align-items: center;
}

.scale-choice {
  --scale-color: var(--accent);
  --scale-ring: var(--accent-strong);
  display: grid;
  place-items: center;
  aspect-ratio: 1 / 1;
  width: 100%;
  max-width: 96px;
  border: 4px solid transparent;
  border-radius: 50%;
  background: var(--scale-color);
  color: #ffffff;
  cursor: pointer;
  justify-self: center;
  transition: border-color 120ms ease, transform 120ms ease;
}

.scale-choice:hover {
  transform: translateY(-1px);
}

.scale-choice:focus-within {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.scale-choice:has(input:checked) {
  border-color: var(--scale-ring);
}

.scale-1 {
  --scale-color: #dc1b16;
  --scale-ring: #8e120f;
}

.scale-2 {
  --scale-color: #ff8214;
  --scale-ring: #b65308;
}

.scale-3 {
  --scale-color: #f8ef3f;
  --scale-ring: #b8ab05;
}

.scale-4 {
  --scale-color: #63c92b;
  --scale-ring: #348312;
}

.scale-5 {
  --scale-color: #397400;
  --scale-ring: #1f4200;
}

.scale-choice input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.scale-number {
  color: #ffffff;
  font-weight: 700;
  font-size: clamp(1.35rem, 8vw, 2.8rem);
  line-height: 1;
}

.scale-choice > span:last-child {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.note-input {
  width: 100%;
  min-height: 160px;
  padding: 12px;
  resize: vertical;
}

.review-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin: 0;
}

.review-list dt {
  color: var(--muted);
}

.review-list dd {
  margin: 0 0 8px;
  white-space: pre-wrap;
}

.status {
  margin: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-muted);
  padding: 10px 12px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

button {
  min-height: 42px;
  cursor: pointer;
  padding: 9px 13px;
}

button.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #ffffff;
}

:root[data-theme='dark'] button.primary {
  color: #10201f;
}

@media (min-width: 720px) {
  .app {
    padding-top: 40px;
  }

  .panel {
    padding: 24px;
  }

  .scale-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .review-list {
    grid-template-columns: minmax(140px, 0.35fr) 1fr;
  }
}