@font-face {
  font-family: "Blacker Display";
  src: url("/assets/blacker-display-light.woff2") format("woff2");
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}

:root {
  --ink: #000000;
  --cream: #f7f0d9;
  --cream-80: rgba(247, 240, 217, 0.8);
  --cream-60: rgba(247, 240, 217, 0.6);
  --cream-50: rgba(247, 240, 217, 0.5);
  --cream-40: rgba(247, 240, 217, 0.4);
  --cream-30: rgba(247, 240, 217, 0.3);
  --cream-15: rgba(247, 240, 217, 0.15);
  --clay: #d98b7c;
  --display: "Blacker Display", Georgia, serif;
  --sans: "Outfit", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--ink);
  color: var(--cream);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.backdrop {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}
.backdrop img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.backdrop .grain {
  position: absolute;
  inset: 0;
  opacity: 0.04;
  mix-blend-mode: overlay;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.page {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  width: 100%;
  max-width: 36rem;
  margin: 0 auto;
  padding: 3rem 1.5rem 3.5rem;
  animation: rise 0.9s ease-out both;
}
@keyframes rise {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  .page, .done { animation: none; }
  .button { transition: none; }
}

.logo {
  width: 18rem;
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto 2rem;
}

.display {
  font-family: var(--display);
  font-weight: 300;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  font-size: 3rem;
  line-height: 1.1;
  margin: 0 0 1.5rem;
}

.rule {
  width: 4rem;
  height: 1px;
  border: 0;
  margin: 0 auto 1.5rem;
  background: var(--cream-30);
}

.intro p, .done p {
  font-size: 13px;
  font-weight: 200;
  line-height: 1.8;
  letter-spacing: 0.025em;
  color: var(--cream-60);
  margin: 0 0 1.25rem;
}

.claim {
  width: 100%;
  max-width: 30rem;
  margin: 2rem auto 0;
  text-align: left;
}

.row {
  display: grid;
  grid-template-columns: 1fr;
  column-gap: 1.5rem;
}

.field { margin-bottom: 1.6rem; }

label {
  display: block;
  font-size: 10px;
  font-weight: 300;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--cream-50);
  margin-bottom: 0.4rem;
}

input {
  display: block;
  width: 100%;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--cream-30);
  border-radius: 0;
  color: var(--cream);
  font-family: var(--sans);
  font-weight: 300;
  font-size: 16px;
  letter-spacing: 0.02em;
  padding: 0.6rem 0;
  outline: none;
  transition: border-color 0.2s ease;
}
input::placeholder { color: var(--cream-30); }
input:focus-visible { border-bottom: 2px solid var(--cream); padding-bottom: calc(0.6rem - 1px); }
input:-webkit-autofill,
input:-webkit-autofill:hover,
input:-webkit-autofill:focus {
  -webkit-background-clip: text;
  -webkit-text-fill-color: var(--cream);
  caret-color: var(--cream);
  transition: background-color 9999s ease-in-out 0s;
}
.field.invalid input { border-bottom-color: var(--clay); }

.hint {
  font-size: 12px;
  font-weight: 300;
  letter-spacing: 0.02em;
  color: var(--cream-50);
  margin: 0.45rem 0 0;
}
.hint.error { color: var(--clay); }

.trap {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
}

.button {
  display: block;
  width: 100%;
  margin: 2rem auto 0;
  background: var(--cream);
  color: var(--ink);
  border: 0;
  border-radius: 9999px;
  padding: 1rem 3rem;
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 300;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.2s ease, letter-spacing 0.3s ease;
}
.button:hover { background: #ffffff; letter-spacing: 0.3em; }
.button:active { transform: scale(0.985); }
.button:focus-visible { outline: 1px solid var(--cream); outline-offset: 4px; }
.button:disabled { opacity: 0.55; cursor: wait; letter-spacing: 0.25em; }

.form-error {
  text-align: center;
  font-size: 13px;
  font-weight: 300;
  letter-spacing: 0.02em;
  color: var(--clay);
  margin: 1.25rem 0 0;
}

.done { animation: rise 0.9s ease-out both; }
.done .display:focus { outline: none; }
.done .display { font-size: 2.25rem; }
.back {
  display: inline-block;
  margin-top: 0.5rem;
  font-size: 11px;
  font-weight: 300;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--cream-60);
  text-decoration: none;
  border-bottom: 1px solid var(--cream-30);
  padding-bottom: 3px;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.back:hover { color: var(--cream); border-bottom-color: var(--cream-80); }

.note {
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: var(--cream-40);
  margin: 2.75rem 0 0;
}

[hidden] { display: none !important; }

@media (min-width: 560px) {
  .row { grid-template-columns: 1fr 1fr; }
  .button { width: auto; min-width: 18rem; }
}

@media (min-width: 768px) {
  .page { padding: 6rem 1.5rem; }
  .logo { width: 16rem; margin-bottom: 3.5rem; }
  .display { font-size: 4.5rem; line-height: 1; margin-bottom: 2.5rem; }
  .rule { margin-bottom: 2.5rem; }
  .intro p, .done p { font-size: 15px; line-height: 2; }
  label { font-size: 12px; }
  .claim { margin-top: 2.5rem; }
  .done .display { font-size: 3rem; }
  .note { font-size: 13px; margin-top: 3.5rem; }
}

@media (min-width: 1024px) {
  .display { font-size: 6rem; }
  .done .display { font-size: 3.5rem; }
}