:root {
  --white: #ffffff;
  --ink: #1a1a1a;
  --font: "Montserrat", system-ui, -apple-system, sans-serif;
  /* Center + feather blend (match dense shadow beside rocks). */
  --rock-edge: #0d0b09;
  --body-fallback: var(--rock-edge);
  --feather: clamp(36px, 7vw, 88px);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  position: relative;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  color: var(--white);
  background: var(--body-fallback);
}

.backdrop {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(20vw, 1fr) minmax(17rem, 26rem) minmax(20vw, 1fr);
}

.wing {
  position: relative;
  z-index: 0;
  min-height: 100%;
  background-color: var(--rock-edge);
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
}

/* Inner / lit edges face the center strip (canyon opening). */
.wing-left {
  background-image: url("assets/left.avif");
  background-position: 100% center;
}

.wing-right {
  transform: scaleX(-1);
  background-image: url("assets/pg1.avif");
  background-position: 100% center;
}

.center-gap {
  position: relative;
  z-index: 1;
  min-height: 100%;
  background: var(--rock-edge);
}

/* Soft vertical blend over the wing textures so the seam isn’t a hard line. */
.center-gap::before,
.center-gap::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: var(--feather);
  pointer-events: none;
}

.center-gap::before {
  right: 100%;
  background: linear-gradient(
    to right,
    transparent 0%,
    var(--rock-edge) 100%
  );
}

.center-gap::after {
  left: 100%;
  background: linear-gradient(
    to left,
    transparent 0%,
    var(--rock-edge) 100%
  );
}

.signup button[type="submit"]:focus-visible,
.consent input:focus-visible {
  outline: 2px solid var(--white);
  outline-offset: 3px;
}

.field input[type="email"]:focus,
.field input[type="email"]:focus-visible {
  outline: none;
  border-bottom-color: rgba(255, 255, 255, 0.95);
  box-shadow: none;
}

.hero {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: clamp(2rem, 8vh, 4rem) clamp(1.25rem, 5vw, 2.5rem) 2.5rem;
}

.hero-title {
  margin: 0;
  width: 100%;
  max-width: min(26.5rem, 92vw);
  font-size: clamp(2.5rem, 8.5vw, 4.75rem);
  font-weight: 800;
  letter-spacing: 0.04em;
  line-height: 1.02;
  text-transform: uppercase;
  color: var(--white);
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.45);
}

.hero-sub {
  margin: 1.1rem 0 0;
  width: 100%;
  max-width: min(26.5rem, 92vw);
  font-size: clamp(0.7rem, 2vw, 0.875rem);
  font-weight: 600;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.98);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}

.signup {
  width: 100%;
  max-width: min(26.5rem, 92vw);
  margin-top: clamp(2.25rem, 5.5vh, 3.5rem);
  text-align: left;
}

.field {
  margin-bottom: 1.35rem;
}

.field label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  margin-bottom: 0.35rem;
  letter-spacing: 0.03em;
}

.req {
  font-weight: 600;
}

.field input[type="email"] {
  display: block;
  width: 100%;
  padding: 0.5rem 0 0.65rem;
  font: inherit;
  color: var(--white);
  background: transparent;
  border: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.95);
  border-radius: 0;
  outline: none;
}

.field input[type="email"]::placeholder {
  color: rgba(255, 255, 255, 0.45);
}

.form-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.25rem 1.5rem;
  margin-top: 0.25rem;
}

.consent {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  max-width: 22rem;
  font-size: 0.6875rem;
  font-weight: 400;
  line-height: 1.45;
  letter-spacing: 0.02em;
  cursor: pointer;
}

.consent input[type="checkbox"] {
  appearance: none;
  width: 14px;
  height: 14px;
  margin: 0.15rem 0 0;
  flex-shrink: 0;
  border: 1px solid rgba(255, 255, 255, 0.92);
  border-radius: 2px;
  background: transparent;
  cursor: pointer;
}

.consent input[type="checkbox"]:checked {
  background: var(--white);
  box-shadow: inset 0 0 0 2px rgba(0, 0, 0, 0.65);
}

.consent input[type="checkbox"]:focus-visible {
  outline: 2px solid var(--white);
  outline-offset: 2px;
}

.signup button[type="submit"] {
  margin-left: auto;
  padding: 0.65rem 1.85rem;
  font-family: inherit;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--ink);
  background: var(--white);
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 0.15s ease, filter 0.15s ease;
}

.signup button[type="submit"]:hover {
  filter: brightness(1.05);
}

.signup button[type="submit"]:active {
  transform: scale(0.98);
}

@media (max-width: 720px) {
  .backdrop {
    grid-template-columns: minmax(14vw, 1fr) minmax(15rem, 88vw) minmax(14vw, 1fr);
  }
}

@media (max-width: 520px) {
  .backdrop {
    grid-template-columns: minmax(12vw, 1fr) minmax(0, 1fr) minmax(12vw, 1fr);
  }

  .wing {
    background-size: cover;
    background-position: 100% center;
  }

  .form-footer {
    flex-direction: column;
    align-items: stretch;
  }

  .signup button[type="submit"] {
    margin-left: 0;
    align-self: flex-end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .signup button[type="submit"] {
    transition: none;
  }
}