:root {
  color-scheme: dark;
  --bg: #02050b;
  --bg-soft: #07111d;
  --text: #f7fbff;
  --muted: #aab9c9;
  --line: rgba(35, 217, 255, 0.28);
  --cyan: #20dcff;
  --blue: #0878ff;
  --blue-deep: #0442c8;
  --white-glow: rgba(255, 255, 255, 0.72);
  --shadow-blue: rgba(0, 132, 255, 0.46);
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
}

body {
  min-height: 100vh;
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 80% 15%, rgba(8, 120, 255, 0.23), transparent 28rem),
    radial-gradient(circle at 20% 88%, rgba(32, 220, 255, 0.17), transparent 24rem),
    linear-gradient(135deg, #010207 0%, var(--bg) 45%, #08111f 100%);
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.85), transparent 74%);
}

img {
  display: block;
  max-width: 100%;
}

.page-shell {
  display: grid;
  min-height: 100vh;
  padding: clamp(1.25rem, 3vw, 3rem);
  place-items: center;
}

.hero {
  display: grid;
  grid-template-columns: minmax(17rem, 0.9fr) minmax(20rem, 1fr);
  align-items: center;
  width: min(100%, var(--max-width));
  gap: clamp(2rem, 6vw, 5rem);
}

.hero__media {
  position: relative;
  display: grid;
  min-height: clamp(18rem, 42vw, 35rem);
  place-items: center;
}

.hero__media::before,
.hero__media::after {
  position: absolute;
  content: "";
  border-radius: 50%;
}

.hero__media::before {
  width: min(72vw, 34rem);
  aspect-ratio: 1;
  border: 1px solid var(--line);
  box-shadow:
    inset 0 0 4rem rgba(32, 220, 255, 0.12),
    0 0 4.5rem rgba(8, 120, 255, 0.2);
}

.hero__media::after {
  width: min(55vw, 24rem);
  aspect-ratio: 1;
  background: rgba(32, 220, 255, 0.08);
  filter: blur(4.5rem);
}

.hero__logo {
  position: relative;
  z-index: 1;
  width: min(86vw, 34rem);
  filter: drop-shadow(0 0 1.65rem var(--shadow-blue));
}

.hero__content {
  max-width: 38rem;
}

.eyebrow {
  margin: 0 0 0.75rem;
  color: var(--cyan);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(4rem, 12vw, 8.8rem);
  font-weight: 800;
  line-height: 0.86;
  letter-spacing: 0;
  text-transform: uppercase;
  text-shadow:
    0 0 1.4rem rgba(32, 220, 255, 0.28),
    0.08em 0.08em 0 rgba(0, 0, 0, 0.44);
}

.hero__tagline {
  margin: 1rem 0 0;
  color: var(--cyan);
  font-size: clamp(1rem, 2.7vw, 1.55rem);
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero__copy {
  max-width: 34rem;
  margin: 1.35rem 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.7vw, 1.15rem);
  line-height: 1.7;
}

.signup-form {
  width: min(100%, 34rem);
  margin-top: clamp(1.8rem, 4vw, 2.6rem);
}

.signup-form__label {
  display: block;
  margin-bottom: 0.65rem;
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 700;
}

.signup-form__controls {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.75rem;
}

.signup-form input {
  width: 100%;
  min-height: 3.4rem;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  padding: 0 1rem;
  color: var(--text);
  background: rgba(7, 17, 29, 0.84);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.02);
  font: inherit;
  outline: none;
}

.signup-form input:focus {
  border-color: var(--cyan);
  box-shadow:
    0 0 0 0.2rem rgba(32, 220, 255, 0.14),
    inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

.signup-form input::placeholder {
  color: #74889d;
}

.signup-form__button-wrap {
  display: block;
}

.signup-form button {
  min-height: 3.4rem;
  width: 100%;
  border: 0;
  border-radius: 0.5rem;
  padding: 0 1.35rem;
  color: white;
  background: linear-gradient(135deg, var(--cyan), var(--blue) 55%, var(--blue-deep));
  box-shadow:
    0 0.85rem 1.8rem rgba(8, 120, 255, 0.35),
    inset 0 1px 0 var(--white-glow);
  font: inherit;
  font-weight: 800;
}

.signup-form button:disabled {
  cursor: not-allowed;
  opacity: 0.58;
  filter: grayscale(0.22);
}

.signup-form__note {
  margin: 0.8rem 0 0;
  color: #8fa1b4;
  font-size: 0.9rem;
  line-height: 1.5;
}

@media (max-width: 820px) {
  .page-shell {
    align-items: start;
    padding-top: 1.5rem;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .hero__media {
    order: -1;
    min-height: clamp(15rem, 62vw, 25rem);
  }

  .hero__logo {
    width: min(85vw, 28rem);
  }

  .hero__content {
    max-width: none;
  }
}

@media (max-width: 560px) {
  .signup-form__controls {
    grid-template-columns: 1fr;
  }

  .signup-form button {
    width: 100%;
  }
}