html,
body {
  margin: 0;
  min-height: 100%;
  background: #06131f;
  color: #fff;
  overflow-x: hidden;
}

body {
  background:
    radial-gradient(circle at top left, rgba(34,211,238,.14), transparent 32%),
    linear-gradient(180deg, #06131f, #020617);
}

.app {
  width: min(92vw, 430px);
  margin: 0 auto;
  padding: 14px 14px 40px;
}

.hero,
.card {
  border: 1px solid rgba(34,211,238,.28);
  background:
    radial-gradient(circle at top left, rgba(34,211,238,.16), transparent 36%),
    linear-gradient(145deg, rgba(15,23,42,.68), rgba(8,47,73,.46));
  box-shadow:
    0 20px 54px rgba(0,0,0,.34),
    0 0 26px rgba(34,211,238,.10),
    inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter: blur(20px);
}

.hero {
  padding: 16px;
  border-radius: 26px;
  margin-bottom: 12px;
}

.hero h1 {
  margin: 10px 0 6px;
  font-size: 28px;
  line-height: 1.05;
  letter-spacing: -.04em;
}

.hero p {
  margin: 0;
  color: rgba(255,255,255,.66);
  font-size: 13px;
  line-height: 1.35;
}

.lang-switcher {
  display: flex;
  gap: 6px;
  margin-bottom: 10px;
}

.lang-switcher button {
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid rgba(34,211,238,.24);
  border-radius: 14px;
  background: rgba(255,255,255,.08);
  color: #fff;
  font-size: 12px;
  font-weight: 900;
}

.card {
  padding: 16px;
  border-radius: 26px;
  margin-bottom: 12px;
}

.card h2 {
  margin: 0 0 12px;
  font-size: 22px;
  line-height: 1.1;
}

.grid {
  display: grid;
  gap: 10px;
}

.field {
  padding: 10px;
  border-radius: 18px;
  border: 1px solid rgba(34,211,238,.16);
  background: rgba(255,255,255,.055);
}

.field-label {
  display: block;
  margin-bottom: 6px;
  color: rgba(255,255,255,.58);
  font-size: 9px;
  font-weight: 900;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.text-input,
select.text-input,
input[type="file"].text-input {
  width: 100%;
  min-height: 40px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.08);
  color: #fff;
  padding: 0 12px;
  outline: none;
  font-size: 14px;
}

.text-input:focus {
  border-color: rgba(34,211,238,.55);
  box-shadow: 0 0 0 4px rgba(34,211,238,.12);
}

.text-input::placeholder {
  color: rgba(255,255,255,.42);
}

select.text-input option {
  color: #111827;
}

input[type="file"].text-input {
  padding: 9px 10px;
}

.helper-text {
  display: block;
  margin-top: 6px;
  color: rgba(255,255,255,.52);
  font-size: 11px;
  line-height: 1.35;
}

.field h3 {
  margin: 0 0 12px;
  font-size: 18px;
}

.field label {
  color: rgba(255,255,255,.80);
  font-size: 10px;
  line-height: 1;
}

.field a {
  color: #a7f3ff;
}

.btn-primary {
  width: 100%;
  min-height: 46px;
  border: 0;
  border-radius: 16px;
  background: linear-gradient(135deg, #06b6d4, #22c55e);
  color: #fff;
  font-size: 14px;
  font-weight: 900;
}

.message {
  margin: 10px 0;
  padding: 10px 12px;
  border-radius: 16px;
  font-size: 13px;
}

.hidden {
  display: none !important;
}

@media (min-width: 760px) {
  .app {
    width: min(88vw, 760px);
  }

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

  .grid .field[style*="grid-column"] {
    grid-column: 1 / -1 !important;
  }

  .btn-primary {
    grid-column: 1 / -1;
  }
}

@media (max-width: 420px) {
  .app {
    width: min(92vw, 390px);
  }

  .hero h1 {
    font-size: 26px;
  }

  .card h2 {
    font-size: 20px;
  }
}