/* ==========================================================================
   Navigation
   ========================================================================== */

.nav {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 100;
  height: 4.25rem;
  display: flex;
  align-items: center;
  background: transparent;
  transition: background-color var(--dur-slow) var(--ease-out),
    border-color var(--dur-slow) var(--ease-out);
  border-bottom: 1px solid transparent;
}

.nav[data-scrolled="true"] {
  background: rgba(18, 18, 16, 0.92);
  backdrop-filter: blur(10px);
  border-bottom-color: var(--line-on-ink);
}

.nav__inner {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.nav__brand {
  display: flex;
  align-items: center;
  height: 2.75rem;
}

.nav__brand img {
  height: 100%;
  width: auto;
  filter: brightness(0) invert(1);
}

.nav__links {
  display: none;
  align-items: center;
  gap: clamp(1.25rem, 2vw, 2.25rem);
}

@media (min-width: 860px) {
  .nav__links {
    display: flex;
  }
}

.nav__link {
  font-family: var(--font-display);
  font-size: var(--fs-small);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--paper);
  text-decoration: none;
  opacity: 0.82;
  transition: opacity var(--dur-fast) var(--ease-out);
}

.nav__link:hover,
.nav__link:focus-visible {
  opacity: 1;
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav__actions .nav__cta {
  display: none;
}

@media (min-width: 860px) {
  .nav__actions .nav__cta {
    display: inline-flex;
    opacity: 0;
    transform: translateY(-4px);
    pointer-events: none;
    transition: opacity var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
  }

  .nav[data-scrolled="true"] .nav__cta {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
}

.nav__menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  color: var(--paper);
}

@media (min-width: 860px) {
  .nav__menu-toggle {
    display: none;
  }
}

.nav__menu-toggle span,
.nav__menu-toggle span::before,
.nav__menu-toggle span::after {
  content: "";
  display: block;
  width: 1.35rem;
  height: 2px;
  background: currentColor;
  transition: transform var(--dur-base) var(--ease-out), opacity var(--dur-base) var(--ease-out);
}

.nav__menu-toggle span {
  position: relative;
}

.nav__menu-toggle span::before {
  position: absolute;
  top: -6px;
}

.nav__menu-toggle span::after {
  position: absolute;
  top: 6px;
}

.nav__menu-toggle[aria-expanded="true"] span {
  background: transparent;
}

.nav__menu-toggle[aria-expanded="true"] span::before {
  transform: translateY(6px) rotate(45deg);
}

.nav__menu-toggle[aria-expanded="true"] span::after {
  transform: translateY(-6px) rotate(-45deg);
}

.nav__mobile {
  position: fixed;
  inset: 0;
  z-index: 99;
  background: var(--ink);
  padding: 6rem var(--gutter) 3rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 2rem;
  transform: translateY(-8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}

.nav__mobile[data-open="true"] {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

@media (min-width: 860px) {
  .nav__mobile {
    display: none;
  }
}

.nav__mobile .nav__link {
  font-size: var(--fs-h3);
  text-transform: uppercase;
  opacity: 1;
}

.nav__mobile-cta {
  margin-top: 1rem;
  align-self: flex-start;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  white-space: nowrap;
  padding: 0.95rem 1.75rem;
  font-family: var(--font-display);
  font-size: var(--fs-small);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius);
  transition: transform var(--dur-fast) var(--ease-out),
    background-color var(--dur-base) var(--ease-out),
    border-color var(--dur-base) var(--ease-out),
    color var(--dur-base) var(--ease-out);
}

.btn:active {
  transform: scale(0.97);
}

/* The base fill uses --accent (the deeper burgundy), not --accent-bright:
   at this button's text size, paper-on-accent-bright falls just under
   WCAG AA, while paper-on-accent clears it comfortably. --accent-bright
   stays reserved for text sitting on dark backgrounds, the opposite
   pairing, where it's the one that reads clearly. */
.btn--primary {
  background: var(--accent);
  color: var(--paper);
  border-color: var(--accent);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  /* A proportional darken (not a fixed token swap) so hover reads
     clearly even on the presale section, whose own background is
     already --accent-deep — swapping to that token there would make
     the button vanish into the page on hover. */
  filter: brightness(0.82);
}

.btn--outline {
  background: transparent;
  color: currentColor;
  border-color: currentColor;
}

.btn--outline:hover,
.btn--outline:focus-visible {
  background: currentColor;
  color: var(--ink);
}

.btn--ghost {
  background: transparent;
  color: currentColor;
  border-color: var(--line-on-ink);
  padding-inline: 1.4rem;
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  border-color: currentColor;
}

.btn--block {
  width: 100%;
}

.btn[disabled] {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.btn__spinner {
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  border: 2px solid currentColor;
  border-top-color: transparent;
  animation: spin 700ms linear infinite;
  display: none;
}

.btn[data-loading="true"] .btn__spinner {
  display: inline-block;
}

.btn[data-loading="true"] .btn__label {
  opacity: 0.75;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* icon-only button (social) */

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--line-on-ink);
  color: currentColor;
  transition: border-color var(--dur-base) var(--ease-out),
    background-color var(--dur-base) var(--ease-out),
    transform var(--dur-fast) var(--ease-out);
}

.icon-btn:hover,
.icon-btn:focus-visible {
  border-color: currentColor;
}

.icon-btn:active {
  transform: scale(0.95);
}

.icon-btn[aria-disabled="true"] {
  opacity: 0.4;
  cursor: not-allowed;
}

.icon-btn svg {
  width: 1.15rem;
  height: 1.15rem;
}

.btn svg {
  width: 1rem;
  height: 1rem;
}

/* ==========================================================================
   Form
   ========================================================================== */

.form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-width: 30rem;
}

/* A layout-transparent wrapper (its children lay out directly in
   .form's flex column, as if this div weren't there) — kept in the
   stylesheet rather than as an inline style so the success/duplicate
   state rule below can actually override it and hide the filled
   fields once registration succeeds. */
.form__fields {
  display: contents;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.field__label {
  font-family: var(--font-display);
  font-size: var(--fs-small);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* The honeypot: real visitors never see or tab to this field. A bot
   that auto-fills every input in the form fills it too, which is how
   the submit handler tells the two apart without a captcha. */
.field--honeypot {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  pointer-events: none;
}

.field__input {
  width: 100%;
  padding: 0.9rem 1rem;
  background: transparent;
  border: 1px solid var(--line-strong-on-ink);
  border-radius: var(--radius);
  font-size: var(--fs-body);
  color: inherit;
  transition: border-color var(--dur-base) var(--ease-out);
}

.field__input::placeholder {
  color: var(--grey-on-ink);
  opacity: 0.85;
}

.field__input:focus-visible {
  border-color: var(--accent-bright);
  outline: none;
}

/* Error color is deliberately warm amber, not red: the brand accent is
   already a deep red, and an error state in the same hue would read as
   "this field is branded" rather than "this field is wrong." */
.field[data-invalid="true"] .field__input {
  border-color: #c17a3a;
}

.field__error {
  font-size: var(--fs-small);
  color: #d99a5c;
  min-height: 1.1em;
}

.field__error:empty {
  display: none;
}

.form__consent {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  font-size: var(--fs-small);
  color: var(--paper);
  opacity: 0.8;
}

.form__consent input {
  margin-top: 0.2rem;
  width: 1.05rem;
  height: 1.05rem;
  accent-color: var(--accent-bright);
  flex-shrink: 0;
}

.form__status {
  border-left: 2px solid var(--accent-bright);
  padding: 1rem 1.25rem;
  font-size: var(--fs-small);
  display: none;
}

.form__status strong {
  display: block;
  margin-bottom: 0.35rem;
  font-family: var(--font-display);
  font-size: var(--fs-body);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.form[data-state="success"] .form__status--success,
.form[data-state="duplicate"] .form__status--duplicate,
.form[data-state="error"] .form__status--error,
.form[data-state="inactive"] .form__status--inactive {
  display: block;
}

.form[data-state="success"] .form__fields,
.form[data-state="success"] .form__submit,
.form[data-state="duplicate"] .form__fields,
.form[data-state="duplicate"] .form__submit {
  display: none;
}

.form__status--success,
.form__status--duplicate {
  border-left-color: var(--accent-bright);
}

.form__status--error {
  border-left-color: #c17a3a;
}

.form__status--inactive {
  border-left-color: var(--grey-on-ink);
  color: var(--grey-on-ink);
}