/* ==========================================================================
   UI primitives: buttons, links, closing call-to-action, forms
   ========================================================================== */

/* --- Buttons & links ----------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  min-height: 3.25rem;
  padding: 0.85rem 1.6rem;
  border: 1px solid transparent;
  border-radius: var(--radius-btn);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease-out), color var(--dur), border-color var(--dur);
}

.btn--primary {
  background: var(--btn-bg);
  color: var(--btn-fg);
}

.btn--primary:hover {
  background: var(--btn-bg-hover);
}

.btn--ghost {
  border-color: var(--line-strong);
  background: transparent;
  color: var(--fg);
}

.btn--ghost:hover {
  border-color: var(--fg);
}

.btn:hover .icon-arrow,
.link-arrow:hover .icon-arrow {
  transform: translateX(4px);
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding-block: 0.35rem;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--fg);
  text-decoration: none;
  background: linear-gradient(currentColor, currentColor) 0 100% / 100% 1px no-repeat;
  transition: background-size var(--dur) var(--ease-out);
}

.link-arrow:hover {
  background-position: 100% 100%;
  background-size: 0% 1px;
}

/* --- Closing CTA ---------------------------------------------------------- */
.cta {
  overflow: hidden;
}

.cta__inner {
  position: relative;
  z-index: 1;
  max-width: 60rem;
}

.cta__title {
  margin: 1.5rem 0 1.25rem;
  font-size: calc(var(--step-5) * var(--display-scale));
}

.cta__text {
  font-size: var(--step-2);
  line-height: 1.4;
  color: var(--fg-muted);
  max-width: 28em;
}

.cta__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem 2.25rem;
  margin-top: 2.5rem;
}

.cta__mark {
  position: absolute;
  right: clamp(-12rem, -9vw, -4rem);
  bottom: clamp(-10rem, -8vw, -3rem);
  width: clamp(16rem, 34vw, 31rem);
  max-width: none;
  opacity: 0.95;
  pointer-events: none;
}

@media (max-width: 47.99em) {
  .cta__mark { opacity: 0.22; }
}

/* --- Forms ---------------------------------------------------------------- */
.form {
  display: grid;
  gap: 1.4rem;
}

.field {
  display: grid;
  gap: 0.5rem;
}

.field label {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.field input,
.field textarea {
  width: 100%;
  padding: 0.9rem 1rem;
  background: var(--bg);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-s);
  transition: border-color var(--dur-fast) var(--ease-out);
}

.field textarea {
  min-height: 9.5rem;
  resize: vertical;
}

.field input:hover,
.field textarea:hover {
  border-color: var(--fg-muted);
}

.field input:focus-visible,
.field textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}

.field [aria-invalid="true"] {
  border-color: #b3261e;
}

.field__error {
  font-size: 0.8125rem;
  font-weight: 500;
  color: #b3261e;
}

html[data-direction="noir"] .field__error { color: #ff9e93; }
html[data-direction="noir"] .field [aria-invalid="true"] { border-color: #ff9e93; }

.field__error:empty {
  display: none;
}

.form__note {
  font-size: var(--step--1);
  color: var(--fg-muted);
}