:root {
  --ink: #07131a;
  --ink-soft: #123042;
  --foam: #e8f4ef;
  --foam-dim: #b7d0c6;
  --signal: #2ee6a8;
  --signal-deep: #12b87f;
  --warn: #ffb454;
  --danger: #ff6b6b;
  --glass: rgba(8, 28, 38, 0.55);
  --line: rgba(232, 244, 239, 0.16);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Manrope", "Segoe UI", sans-serif;
  --pad: max(1rem, env(safe-area-inset-left, 0px));
}

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

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

html,
body {
  margin: 0;
  min-height: 100%;
  min-height: 100dvh;
}

body {
  font-family: var(--font-body);
  color: var(--foam);
  background: var(--ink);
  line-height: 1.45;
  overflow-x: hidden;
}

.atmosphere {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  background:
    radial-gradient(1200px 700px at 12% 8%, rgba(46, 230, 168, 0.18), transparent 55%),
    radial-gradient(900px 600px at 88% 18%, rgba(18, 100, 140, 0.35), transparent 50%),
    radial-gradient(800px 500px at 70% 90%, rgba(255, 180, 84, 0.12), transparent 45%),
    linear-gradient(160deg, #041016 0%, #0b2430 48%, #07131a 100%);
}

.atmosphere::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    -12deg,
    transparent 0 14px,
    rgba(232, 244, 239, 0.015) 14px 15px
  );
  opacity: 0.7;
  pointer-events: none;
}

@media (min-width: 700px) {
  .atmosphere {
    animation: drift 18s ease-in-out infinite alternate;
  }
}

@keyframes drift {
  from {
    filter: hue-rotate(0deg) saturate(1);
    transform: scale(1);
  }
  to {
    filter: hue-rotate(12deg) saturate(1.08);
    transform: scale(1.03);
  }
}

.shell {
  position: relative;
  z-index: 1;
  width: min(42rem, 100%);
  margin: 0 auto;
  padding: max(1.15rem, env(safe-area-inset-top, 0px)) var(--pad)
    max(2rem, env(safe-area-inset-bottom, 0px));
  display: grid;
  gap: 1.5rem;
  align-content: start;
}

.hero {
  width: 100%;
  min-width: 0;
}

.brand {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 4.6vw, 1.55rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--foam);
}

.headline {
  margin: 0 0 0.7rem;
  font-family: var(--font-body);
  font-size: clamp(1.35rem, 5.6vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  color: var(--foam);
  text-wrap: balance;
  overflow-wrap: anywhere;
}

.lede {
  margin: 0 0 0.7rem;
  color: var(--foam-dim);
  font-size: clamp(0.95rem, 3.4vw, 1.05rem);
  max-width: 36rem;
}

.lede strong {
  color: var(--foam);
  font-weight: 700;
}

.when {
  margin: 0 0 1.15rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--signal);
  letter-spacing: 0.01em;
}

.field em {
  font-style: normal;
  font-weight: 500;
  color: rgba(183, 208, 198, 0.75);
}

[hidden] {
  display: none !important;
}

.signup,
.thanks,
.card {
  display: grid;
  gap: 0.85rem;
  padding: 1rem;
  border: 1px solid var(--line);
  background: var(--glass);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
  min-width: 0;
}

.field {
  display: grid;
  gap: 0.35rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--foam-dim);
}

.field input {
  appearance: none;
  width: 100%;
  max-width: 100%;
  min-height: 2.75rem;
  border: 1px solid var(--line);
  background: rgba(4, 16, 22, 0.65);
  color: var(--foam);
  font: inherit;
  font-weight: 500;
  font-size: 16px;
  padding: 0.75rem 0.85rem;
  border-radius: 0;
  outline: none;
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}

.field input:focus {
  border-color: var(--signal);
  box-shadow: 0 0 0 3px rgba(46, 230, 168, 0.2);
}

.consent {
  display: grid;
  grid-template-columns: 1.25rem 1fr;
  gap: 0.65rem;
  align-items: start;
  font-size: 0.88rem;
  color: var(--foam-dim);
  cursor: pointer;
}

.consent input {
  margin-top: 0.15rem;
  accent-color: var(--signal-deep);
  width: 1.15rem;
  height: 1.15rem;
}

.cta {
  appearance: none;
  border: 0;
  width: 100%;
  min-height: 2.85rem;
  background: var(--signal);
  color: var(--ink);
  font: inherit;
  font-weight: 700;
  font-size: 1.02rem;
  letter-spacing: -0.01em;
  padding: 0.9rem 1.1rem;
  cursor: pointer;
  transition:
    transform 0.15s ease,
    background 0.15s ease,
    opacity 0.15s ease;
}

.cta:hover:not(:disabled) {
  background: #5ff0bf;
}

.cta:disabled {
  opacity: 0.55;
  cursor: wait;
}

.step-label {
  margin: 0;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--signal);
}

.panel {
  display: grid;
  gap: 0.85rem;
  min-width: 0;
}

.step-nav {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.65rem;
  align-items: stretch;
}

.back {
  appearance: none;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--foam-dim);
  font: inherit;
  font-weight: 600;
  padding: 0.75rem 1rem;
  cursor: pointer;
}

.choice {
  margin: 0;
  padding: 0;
  border: 0;
  display: grid;
  gap: 0.65rem;
}

.choice legend {
  padding: 0;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--foam-dim);
}

.choice-help {
  margin: 0;
  font-size: 0.88rem;
  color: var(--foam-dim);
}

.choice-opt {
  display: grid;
  grid-template-columns: 1.25rem 1fr;
  gap: 0.65rem;
  align-items: start;
  font-size: 0.92rem;
  color: var(--foam);
  cursor: pointer;
}

.choice-opt input {
  margin-top: 0.2rem;
  accent-color: var(--signal-deep);
}

.form-status {
  margin: 0;
  font-size: 0.9rem;
  color: var(--warn);
}

.form-status[data-kind="error"] {
  color: var(--danger);
}

.thanks-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 5vw, 1.8rem);
  letter-spacing: -0.02em;
}

.thanks-body {
  margin: 0;
  color: var(--foam-dim);
}

.share-url {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.85rem;
}

.share-offer {
  margin: 0;
  color: var(--foam-dim);
}

.how,
.split {
  width: 100%;
  min-width: 0;
}

.how-title,
.card-title {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

.how-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.75rem;
}

.how-list li {
  display: grid;
  grid-template-columns: 2rem 1fr;
  gap: 0.7rem;
  color: var(--foam-dim);
  font-size: 0.95rem;
  min-width: 0;
}

.how-list strong {
  display: block;
  color: var(--foam);
  font-weight: 700;
  margin-bottom: 0.15rem;
}

.step {
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  flex-shrink: 0;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--ink);
  background: var(--signal);
}

.split {
  display: grid;
  gap: 0.75rem;
}

.card {
  box-shadow: none;
}

.card p {
  margin: 0;
  color: var(--foam-dim);
  font-size: 0.95rem;
}

.how-note {
  margin: 0;
  font-size: 0.85rem;
  color: rgba(183, 208, 198, 0.85);
}

.how-note em {
  font-style: normal;
  font-weight: 600;
  color: var(--foam);
}

@media (min-width: 700px) {
  .shell {
    margin: 0;
    padding: 2.5rem clamp(1.5rem, 6vw, 5rem) 3rem;
  }

  .cta:hover:not(:disabled) {
    transform: translateY(-1px);
  }

  .split {
    grid-template-columns: 1fr 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .atmosphere {
    animation: none;
  }
}