:root {
  --bg: #ffffff;
  --bg-mint: #e5f2d2;
  --bg-mint-soft: #e7f6e0;
  --surface: #f5f5f5;
  --surface-elevated: #ffffff;
  --border: #d9d9d9;
  --border-strong: #d9d9d9;
  --text: #0d0d0d;
  --text-muted: #5c5c5c;
  --accent: #35b100;
  --accent-hover: #1a5a00;
  --accent-soft: #e7f6e0;
  --error: #b42318;
  --error-bg: #fef3f2;
  --radius: 12px;
  --radius-card: 24px;
  --radius-pill: 999px;
  --shadow: 0 4px 24px rgb(13 13 13 / 0.06);
  --font: "Manrope", -apple-system, system-ui, "Segoe UI", sans-serif;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text);
  background:
    linear-gradient(180deg, var(--bg-mint) 0%, var(--bg-mint-soft) 28%, var(--bg) 55%);
  background-attachment: fixed;
}

.page {
  width: min(100% - 2rem, 440px);
  margin: 0 auto;
  padding: 1.75rem 0 3rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 1.25rem;
}

.brand-mark {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  border: 2.5px solid var(--accent);
  border-radius: 50%;
  position: relative;
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 5px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.35;
}

.brand-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text);
}

.header {
  margin-bottom: 1.25rem;
}

.title {
  margin: 0 0 1rem;
  font-size: clamp(1.75rem, 5vw, 2.25rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.title-accent {
  color: var(--accent);
}

.progress-block {
  display: grid;
  gap: 0.5rem;
}

.progress-block[hidden] {
  display: none;
}

.progress-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
}

progress {
  width: 100%;
  height: 6px;
  border: none;
  border-radius: var(--radius-pill);
  overflow: hidden;
  background: var(--surface);
  appearance: none;
}

progress::-webkit-progress-bar {
  background: var(--surface);
  border-radius: var(--radius-pill);
}

progress::-webkit-progress-value {
  background: var(--accent);
  border-radius: var(--radius-pill);
  transition: width 0.35s var(--ease);
}

progress::-moz-progress-bar {
  background: var(--accent);
  border-radius: var(--radius-pill);
}

.card {
  background: var(--surface-elevated);
  border: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow);
  padding: 1.5rem;
}

.step {
  display: none;
}

.step.is-active {
  display: block;
  animation: step-in 0.35s var(--ease) both;
}

@keyframes step-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .step.is-active {
    animation: none;
  }

  progress::-webkit-progress-value {
    transition: none;
  }

  .btn,
  .choice {
    transition: none !important;
  }
}

.step-title {
  margin: 0 0 0.35rem;
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.step-hint {
  margin: 0 0 1.25rem;
  color: var(--text-muted);
  font-size: 0.9375rem;
  max-width: 65ch;
}

.field {
  display: grid;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.field label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
}

.field input {
  width: 100%;
  min-height: 48px;
  padding: 0.75rem 1rem;
  font: inherit;
  color: var(--text);
  background: var(--surface);
  border: 1px solid transparent;
  border-radius: var(--radius);
  outline: none;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease), background 0.2s var(--ease);
}

.field input::placeholder {
  color: var(--text-muted);
  opacity: 0.85;
}

.field input:hover {
  border-color: color-mix(in srgb, var(--accent) 40%, transparent);
}

.field input:focus {
  border-color: var(--accent);
  background: var(--surface-elevated);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 28%, transparent);
}

.field input.is-invalid {
  border-color: var(--error);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--error) 22%, transparent);
}

.error {
  margin: 0.75rem 0 0;
  padding: 0.55rem 0.75rem;
  font-size: 0.875rem;
  color: var(--error);
  background: var(--error-bg);
  border-radius: calc(var(--radius) - 4px);
}

.field .error {
  margin: 0;
}

.choice-group {
  display: grid;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.choice-group-compact {
  grid-template-columns: 1fr 1fr;
}

.choice-group-row {
  grid-template-columns: 1fr 1fr;
}

.unit-badge {
  margin: 0 0 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}

.sub-choice {
  display: grid;
  gap: 0.65rem;
  margin: 1rem 0 0.5rem;
  padding: 1rem;
  background: color-mix(in srgb, var(--accent-soft) 55%, var(--surface));
  border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
  border-radius: var(--radius);
}

.sub-choice[hidden] {
  display: none;
}

.sub-choice-label {
  margin: 0;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
}

.choice {
  width: 100%;
  min-height: 52px;
  padding: 0.9rem 1.15rem;
  font: inherit;
  font-weight: 600;
  text-align: left;
  color: var(--text);
  background: var(--surface);
  border: 1.5px solid transparent;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease), transform 0.12s var(--ease);
}

.choice-group-compact .choice,
.choice-group-row .choice {
  text-align: center;
  padding-inline: 0.75rem;
  min-height: 48px;
}

.choice-action {
  text-align: left;
}

.choice:hover {
  border-color: color-mix(in srgb, var(--accent) 50%, transparent);
}

.choice:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.choice[aria-pressed="true"] {
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: inset 0 0 0 1px var(--accent);
}

.choice:active {
  transform: scale(0.98);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.7rem 1.5rem;
  font: inherit;
  font-weight: 600;
  white-space: nowrap;
  border: 1.5px solid transparent;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease), transform 0.12s var(--ease);
}

.btn:active {
  transform: scale(0.98) translateY(1px);
}

.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.btn-primary {
  flex: 1 1 auto;
  color: #ffffff;
  background: var(--accent);
  border-color: var(--accent);
}

.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.btn-secondary {
  flex: 0 0 auto;
  color: var(--text);
  background: transparent;
  border-color: var(--border-strong);
}

.btn-secondary:hover {
  background: var(--surface);
  border-color: var(--text);
}

.summary {
  margin: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--border);
}

.summary-row {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 0.75rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border);
}

.summary-row dt {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 500;
}

.summary-row dd {
  margin: 0;
  font-weight: 600;
  word-break: break-word;
}

.summary-units {
  display: grid;
  gap: 1rem;
  margin-top: 1.25rem;
}

.unit-card {
  padding: 1rem 1.1rem 0.35rem;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid color-mix(in srgb, var(--border) 80%, transparent);
}

.unit-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.35rem;
}

.unit-card-title {
  margin: 0;
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.unit-card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  flex-shrink: 0;
}

.btn-tiny {
  min-height: 36px;
  padding: 0.35rem 0.8rem;
  font-size: 0.8125rem;
}

.btn-danger {
  color: var(--error);
  background: transparent;
  border-color: color-mix(in srgb, var(--error) 35%, var(--border));
}

.btn-danger:hover {
  background: var(--error-bg);
  border-color: var(--error);
}

.summary-nested {
  border-top: none;
}

.summary-nested .summary-row:last-child {
  border-bottom: none;
}

.notice {
  margin: 1rem 0 0;
  padding: 0.75rem 0.9rem;
  font-size: 0.875rem;
  color: var(--text);
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  border-radius: var(--radius);
}

@media (max-width: 400px) {
  .summary-row {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }

  .choice-group-compact {
    grid-template-columns: 1fr;
  }

  .actions {
    flex-direction: column-reverse;
  }

  .btn:not(.btn-tiny),
  .btn-secondary:not(.btn-tiny) {
    width: 100%;
  }
}