/* ---------- Business Diagnostic ---------- */
.diag {
  padding-block: var(--space-section);
}

.diag [hidden] {
  display: none !important;
}

.diag__grid {
  row-gap: var(--space-content);
}

.diag__intro,
.diag__panel {
  grid-column: 1 / -1;
}

.diag h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.015em;
  text-wrap: balance;
}

.diag__lead {
  max-width: 34rem;
  margin-top: 1.5rem;
  font-size: 1.125rem;
  color: var(--colour-ink-soft);
}

.diag__note {
  max-width: 34rem;
  margin-top: 1rem;
  color: var(--colour-ink);
  font-weight: 600;
}

.diag__effort {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 1.5rem;
  font-family: var(--font-data);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.diag__mark {
  width: 0.5625rem;
  height: 0.5625rem;
  background: #8a6a2a;
}

.diag__panel {
  min-width: 0;
  padding-top: var(--space-content);
  border-top: 1px solid var(--colour-ink);
}

/* ---------- No-JS / script-failed fallback ---------- */
.diag-fallback h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
}

.diag-fallback p {
  max-width: 32rem;
  margin-top: 0.75rem;
  color: var(--colour-ink-soft);
}

.diag-fallback__routes {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

/* Once diagnostic.js has run, swap the fallback for the form. */
.diag-ready .diag-fallback {
  display: none;
}

.diag-ready .diag-app {
  display: block;
}

/* ---------- Progress ---------- */
.diag-steps {
  display: flex;
  align-items: center;
  list-style: none;
}

.diag-steps li {
  display: flex;
  align-items: center;
  flex: 1 1 0;
}

.diag-steps li:last-child {
  flex: none;
}

.diag-steps li::before {
  content: "";
  flex: none;
  width: 0.75rem;
  height: 0.75rem;
  background: var(--colour-canvas);
  border: 1px solid var(--colour-ink);
}

.diag-steps li:not(:last-child)::after {
  content: "";
  flex: 1;
  height: 1px;
  margin-inline: 0.35rem;
  background: var(--colour-ink-soft);
  opacity: 0.5;
}

.diag-steps li.is-done::before {
  background: var(--colour-ink);
}

.diag-steps li.is-current::before {
  background: var(--colour-brand);
  border-color: var(--colour-brand);
  outline: 1px solid var(--colour-brand);
  outline-offset: 2px;
}

.diag-keep,
.diag-key {
  max-width: 34rem;
  margin-top: 1.25rem;
  font-size: 0.875rem;
  color: var(--colour-ink-soft);
}

.diag-key {
  margin-top: 0.5rem;
}

/* ---------- Steps and fields ---------- */
.step {
  margin-top: 2rem;
  animation: step-in 0.25s var(--ease);
}

@keyframes step-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.step h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.step h2:focus {
  outline: none;
}

.step h2:focus-visible {
  outline: 2px solid var(--colour-brand);
  outline-offset: 4px;
}

.step__kicker {
  display: block;
  margin-bottom: 0.5rem;
  font-family: var(--font-data);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--colour-ink-soft);
}

.field {
  min-width: 0;
  margin: 1.75rem 0 0;
  padding: 0;
  border: 0;
}

.field--sub {
  margin-top: 0.75rem;
  padding-left: 1rem;
  border-left: 1px solid var(--colour-ink);
}

.field label,
.field legend {
  display: block;
  padding: 0;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--colour-ink);
}

.field__opt {
  font-weight: 400;
  color: var(--colour-ink-soft);
}

.field__hint {
  margin-top: 0.35rem;
  font-size: 0.9375rem;
  color: var(--colour-ink-soft);
}

.field input[type="text"],
.field input[type="email"],
.field input[type="tel"],
.field input[type="url"],
.field select,
.field textarea {
  display: block;
  width: 100%;
  min-height: 3rem;
  margin-top: 0.5rem;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--colour-ink-soft);
  border-radius: var(--radius);
  background: var(--colour-surface);
  color: var(--colour-ink);
  font: inherit;
  line-height: 1.4;
}

.field textarea {
  min-height: 8rem;
  resize: vertical;
}

.field input:disabled {
  background: var(--colour-stone);
  color: var(--colour-ink-soft);
}

.field input:focus-visible,
.field select:focus-visible,
.field textarea:focus-visible {
  outline: 2px solid var(--colour-brand);
  outline-offset: 2px;
  border-color: var(--colour-brand);
}

/* Option rows: whole row is the tap target */
.opts {
  display: grid;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.field .opt,
.opt {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  min-height: 2.75rem;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--colour-line);
  border-radius: var(--radius);
  background: var(--colour-surface);
  font-size: 1rem;
  font-weight: 400;
  cursor: pointer;
}

.opt input {
  flex: none;
  width: 1.25rem;
  height: 1.25rem;
  margin: 0.125rem 0 0;
  accent-color: var(--colour-brand);
}

.opt:has(input:checked) {
  border-color: var(--colour-ink);
  background: var(--colour-stone);
}

.opt:has(input:focus-visible) {
  outline: 2px solid var(--colour-brand);
  outline-offset: 2px;
}

.opt--inline {
  margin-top: 0.75rem;
}

.field--consent {
  margin-top: 2rem;
}

.field--consent .opt {
  margin-top: 0;
}

/* Honeypot: off-screen, not focusable */
.hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* ---------- Errors: text + heavier border + marker, never colour alone ---------- */
.field__error {
  margin-top: 0.5rem;
  padding-left: 0.9rem;
  border-left: 3px solid var(--colour-error);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--colour-error);
  overflow-wrap: anywhere;
}

.field--invalid input:not([type="checkbox"]):not([type="radio"]),
.field--invalid select,
.field--invalid textarea {
  border: 2px solid var(--colour-error);
}

.field--invalid legend,
.field--invalid > label {
  color: var(--colour-error);
}

.diag-errors {
  margin-top: 1.5rem;
  padding: 1rem 1.25rem;
  border: 2px solid var(--colour-error);
  background: var(--colour-surface);
}

.diag-errors:focus {
  outline: 2px solid var(--colour-brand);
  outline-offset: 3px;
}

.diag-errors__title {
  font-weight: 700;
  color: var(--colour-error);
}

.diag-errors ul {
  margin-top: 0.5rem;
  padding-left: 1.25rem;
}

.diag-errors li + li {
  margin-top: 0.35rem;
}

.diag-errors a {
  color: var(--colour-ink);
  overflow-wrap: anywhere;
}

/* ---------- Navigation, failure, confirmation ---------- */
.diag-nav {
  display: flex;
  gap: 0.75rem;
  margin-top: 2.25rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--colour-line);
}

.diag-nav [data-next] {
  flex: 1;
}

.diag-nav [data-back] {
  flex: none;
  min-width: 6rem;
}

.diag-nav .btn[aria-busy="true"] {
  opacity: 0.7;
  cursor: progress;
}

.diag-failure {
  margin-top: 1.75rem;
  padding: 1.25rem;
  border: 2px solid var(--colour-ink);
  background: var(--colour-surface);
}

.diag-failure:focus {
  outline: 2px solid var(--colour-brand);
  outline-offset: 3px;
}

.diag-failure__title {
  font-weight: 700;
}

.diag-failure p + p {
  margin-top: 0.5rem;
  color: var(--colour-ink-soft);
}

.diag-failure__actions,
.diag-done__actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.diag-done h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

.diag-done h2:focus {
  outline: none;
}

.diag-done p {
  max-width: 32rem;
  margin-top: 1rem;
  color: var(--colour-ink-soft);
  font-size: 1.125rem;
}

@media (min-width: 600px) {
  .opts--two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .diag-failure__actions,
  .diag-done__actions,
  .diag-fallback__routes {
    flex-direction: row;
    flex-wrap: wrap;
  }
}

@media (min-width: 1024px) {
  .diag__intro {
    grid-column: 1 / span 5;
    align-self: start;
    position: sticky;
    top: var(--space-content);
  }

  .diag__panel {
    grid-column: 7 / -1;
    border-top: 0;
    padding-top: 0;
  }
}

/* No step transition for people who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
  .step {
    animation: none;
  }
}