/* Contact section. Tokens: css/tokens.css. Rules: design.md (Input, Card, Motion) */
.contact__grid {
  display: grid;
  gap: var(--sp-7);
}
.contact__intro { display: grid; gap: var(--sp-5); align-content: start; }
.contact__intro h2 { line-height: 1.15; }
.contact__lede { max-inline-size: 40ch; font-size: var(--fs-h3); line-height: 1.5; color: var(--ink-muted); }

/* Desktop: the headline runs across the page, the lede sits on the inline-start side, the form panel on the other. */
@media (min-width: 64rem) {
  .contact__grid { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); column-gap: var(--sp-8); row-gap: var(--sp-7); }
  .contact__intro { display: contents; }
  .contact__intro .label,
  .contact__intro h2 { grid-column: 1 / -1; }
  .contact__intro .label { margin-block-end: calc(-1 * var(--sp-5)); }
  .contact__lede { grid-column: 1; align-self: start; position: sticky; inset-block-start: var(--sp-10); }
  .contact__panel { grid-column: 2; }
}

.contact__panel {
  background: var(--surface);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-1);
  padding: clamp(var(--sp-5), 4vw, var(--sp-8));
}

.contact__form { display: grid; gap: var(--sp-5); }

.field { display: grid; gap: var(--sp-2); min-inline-size: 0; }
.field > label { font-weight: 500; font-size: var(--fs-small); }

.field input[type="text"],
.field textarea {
  inline-size: 100%;
  min-block-size: 56px;
  padding: var(--sp-3) var(--sp-4);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  font-size: var(--fs-body);
  transition: border-color var(--dur-fast) ease;
}
#cf-message { min-block-size: calc(56px * 2.5); resize: vertical; line-height: 1.6; }
.field input[type="text"]:focus-visible,
.field textarea:focus-visible { border-color: var(--accent); }
.field [aria-invalid="true"] { border-color: var(--danger); }

.field__error {
  font-size: var(--fs-small);
  font-weight: 500;
  color: var(--danger);
}

/* topic chips: checkbox pills */
.field--chips { margin: 0; padding: 0; border: 0; }
.field--chips legend { padding: 0; margin-block-end: var(--sp-2); font-weight: 500; font-size: var(--fs-small); }
.chips { display: flex; flex-wrap: wrap; gap: var(--sp-2); }
.chip {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-block-size: 44px;
  padding-inline: var(--sp-4);
  border: 1px solid var(--line);
  border-radius: var(--r-full);
  background: var(--surface);
  font-size: var(--fs-small);
  font-weight: 500;
  cursor: pointer;
  user-select: none;
  transition: background-color var(--dur-fast) ease, border-color var(--dur-fast) ease, box-shadow var(--dur-fast) ease;
}
.chip input {
  position: absolute;
  inset: 0;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}
.chip:has(input:checked) {
  background: var(--accent-soft);
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--accent);
}
.chip:has(input:focus-visible) { outline: 2px solid var(--accent); outline-offset: 3px; }

/* honeypot: present for bots, absent for people and screen readers */
.field--hp {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.contact__submit { justify-self: start; }
.contact__submit[aria-busy="true"] { opacity: 0.7; cursor: progress; }
@media (max-width: 47.99rem) {
  .contact__submit { justify-self: stretch; }
}

.contact__status { font-size: var(--fs-small); }
.contact__status:empty { display: none; }
.contact__status.is-error { color: var(--danger); font-weight: 500; }
.contact__mail { color: var(--ink); font-family: var(--font-mono); user-select: all; unicode-bidi: isolate; }

/* thank-you state: enters once by class toggle */
.contact__done {
  display: grid;
  justify-items: start;
  gap: var(--sp-4);
  padding-block: var(--sp-7);
  opacity: 0;
  transform: translateY(var(--sp-3));
  transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);
}
.contact__done.is-in { opacity: 1; transform: none; }
.contact__done:focus-visible { outline-offset: var(--sp-2); }
.contact__done:focus:not(:focus-visible) { outline: none; }
.contact__check { color: var(--ok); }
.contact__done h3 { font-size: var(--fs-h3); font-weight: 600; line-height: 1.25; }
.contact__done p { color: var(--ink-muted); }

@media (hover: hover) {
  .chip:hover { border-color: var(--ink-muted); }
  .chip:has(input:checked):hover { border-color: var(--accent); }
}

@media (prefers-reduced-motion: reduce) {
  .contact__done { transform: none; transition: opacity var(--dur-slow) ease; }
}