/* ==================================================================
   Access code (js/gate.js) — Experiments + Studies
   The code box under a locked name on the homepage, and the lock
   screen on the pages themselves
   ================================================================== */

/* while locked, only the header and the lock screen show */
.is-locked body > :not(.site-header):not(.menu-overlay):not(.gate):not(.skip-link):not(script) { display: none !important; }

.gate {
  min-height: calc(100vh - var(--header-h));
  min-height: calc(100svh - var(--header-h));
  padding: 48px var(--gutter) 64px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--color-bg);
  transition: opacity 0.5s var(--ease), transform 0.6s var(--ease);
}
.gate.is-open { opacity: 0; transform: translateY(-12px); }

.gate__eyebrow {
  margin: 0 0 18px;
  font-size: var(--fs-heading);
  letter-spacing: var(--tracking-heading);
  text-transform: uppercase;
  color: var(--color-muted);
}
.gate__title {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: var(--fw-light);
  letter-spacing: 0.32em;
  margin-right: -0.32em;               /* keep the spaced word centred */
  text-transform: uppercase;
  line-height: 1.1;
}
.gate__text {
  max-width: 34ch;
  margin: 22px 0 40px;
  color: var(--color-muted);
  font-size: 0.875rem;
}

.gate__form { width: min(360px, 100%); }
.gate__label {
  display: block;
  margin-bottom: 10px;
  font-size: var(--fs-nav);
  letter-spacing: var(--tracking-nav);
  text-transform: uppercase;
  color: var(--color-muted);
}
.gate__row {
  display: flex;
  border-bottom: 1px solid var(--color-text);
}
.gate__input {
  flex: 1;
  min-width: 0;
  padding: 12px 4px;
  border: 0;
  background: transparent;
  color: var(--color-text);
  font: inherit;
  font-size: 1rem;
  letter-spacing: 0.3em;
  text-align: center;
}
.gate__input:focus { outline: none; }
.gate__row:focus-within { border-bottom-color: var(--color-accent); }
.gate__btn {
  padding: 0 4px 0 16px;
  border: 0;
  background: none;
  color: var(--color-text);
  font: inherit;
  font-size: var(--fs-nav);
  letter-spacing: var(--tracking-nav);
  text-transform: uppercase;
  cursor: pointer;
  transition: color var(--dur) var(--ease);
}
.gate__btn span { display: inline-block; transition: transform var(--dur) var(--ease); }
.gate__btn:hover { color: var(--color-accent); }
.gate__btn:hover span { transform: translateX(4px); }

.gate__error {
  margin: 14px 0 0;
  font-size: 0.8125rem;
  color: var(--color-accent);
}
.is-wrong .gate__row { animation: gate-shake 0.4s ease; }
@keyframes gate-shake {
  0%, 100% { transform: none; }
  25% { transform: translateX(-8px); }
  50% { transform: translateX(6px); }
  75% { transform: translateX(-3px); }
}

.gate__ask {
  margin-top: 40px;
  font-size: var(--fs-nav);
  letter-spacing: var(--tracking-nav);
  text-transform: uppercase;
  color: var(--color-muted);
  border-bottom: 1px solid var(--color-line);
  padding-bottom: 4px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.gate__ask:hover { color: var(--color-accent); border-color: var(--color-accent); }

/* homepage: the box that opens under a locked project's name */
.gate-inline {
  display: grid;
  grid-template-rows: 0fr;
  justify-items: center;
  opacity: 0;
  transition: grid-template-rows 0.35s var(--ease), opacity 0.3s var(--ease), margin 0.35s var(--ease);
}
.gate-inline__in { min-height: 0; overflow: hidden; display: flex; flex-direction: column; align-items: center; }
.gate-inline.is-shown { grid-template-rows: 1fr; opacity: 1; margin: 14px 0 22px; }
.gate-inline .gate__form { width: min(280px, 80vw); padding-top: 4px; }
.gate-inline .gate__input { padding: 8px 4px; font-size: 0.875rem; }
.gate-inline .gate__ask { margin-top: 18px; }

@media (prefers-reduced-motion: reduce) {
  .gate, .gate-inline, .is-wrong .gate__row { transition: none; animation: none; }
}