* {
  box-sizing: border-box;
}

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

body {
  font-family: 'Montserrat', Arial, sans-serif;
  background: #030303;
  color: #fff;
  overflow-x: hidden;
}

.bg-machine {
  position: fixed;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(0,0,0,.82), rgba(0,0,0,.18), rgba(0,0,0,.82)),
    url('koparka.svg') center center / min(92vw, 1050px) auto no-repeat,
    radial-gradient(circle at center, rgba(245, 170, 30, .18), transparent 45%),
    #030303;
  filter: saturate(1.08) contrast(1.08);
  opacity: .9;
  z-index: -3;
}

.overlay {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at center, rgba(255, 184, 43, .08), transparent 35%),
    linear-gradient(180deg, rgba(0,0,0,.18), rgba(0,0,0,.86));
  z-index: -2;
}

.page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 42px 18px;
}

.hero {
  width: min(100%, 620px);
  text-align: center;
}

.domain {
  margin: 0 0 10px;
  letter-spacing: .34em;
  color: #f6b12d;
  font-size: 15px;
  font-weight: 800;
  text-shadow: 0 0 18px rgba(246, 177, 45, .45);
}

.title {
  margin: 0;
  font-size: clamp(34px, 7vw, 74px);
  line-height: .95;
  font-weight: 800;
  letter-spacing: .04em;
  text-transform: uppercase;
  animation: softGlow 2.7s ease-in-out infinite alternate;
}

.arrow {
  margin: 18px auto 24px;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  color: #f6b12d;
  font-size: 38px;
  animation: bounce 1.25s infinite;
  text-shadow: 0 0 20px rgba(246, 177, 45, .65);
}

.offer-form {
  text-align: left;
  padding: 28px;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 24px;
  background: rgba(8, 8, 8, .72);
  box-shadow: 0 24px 80px rgba(0,0,0,.55), inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter: blur(12px);
}

label {
  display: block;
  margin-bottom: 14px;
  color: rgba(255,255,255,.86);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .02em;
}

input,
textarea {
  width: 100%;
  margin-top: 7px;
  padding: 14px 15px;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 14px;
  outline: none;
  background: rgba(255,255,255,.08);
  color: #fff;
  font: inherit;
  transition: border .2s, box-shadow .2s, background .2s;
}

input:focus,
textarea:focus {
  border-color: rgba(246,177,45,.88);
  box-shadow: 0 0 0 4px rgba(246,177,45,.13);
  background: rgba(255,255,255,.12);
}

textarea {
  resize: vertical;
}

button {
  width: 100%;
  margin-top: 4px;
  border: 0;
  border-radius: 16px;
  padding: 16px 18px;
  cursor: pointer;
  color: #111;
  background: linear-gradient(135deg, #ffd36b, #f2a400);
  font-size: 16px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .06em;
  box-shadow: 0 12px 30px rgba(242, 164, 0, .28);
  transition: transform .2s, filter .2s;
}

button:hover {
  transform: translateY(-2px);
  filter: brightness(1.05);
}

.note {
  margin: 14px 0 0;
  text-align: center;
  color: rgba(255,255,255,.64);
  font-size: 12px;
}

.message {
  margin: 0 auto 18px;
  padding: 13px 16px;
  border-radius: 14px;
  font-weight: 700;
  background: rgba(255,255,255,.1);
}

.success {
  border: 1px solid rgba(95, 255, 153, .45);
  color: #a9ffc8;
}

.error {
  border: 1px solid rgba(255, 95, 95, .5);
  color: #ffb8b8;
}

.hidden-field {
  position: absolute;
  left: -9999px;
  opacity: 0;
}

@keyframes softGlow {
  from {
    text-shadow: 0 0 12px rgba(255,255,255,.16), 0 0 24px rgba(246,177,45,.18);
    transform: translateY(0);
  }
  to {
    text-shadow: 0 0 20px rgba(255,255,255,.24), 0 0 42px rgba(246,177,45,.5);
    transform: translateY(-2px);
  }
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); opacity: .7; }
  50% { transform: translateY(10px); opacity: 1; }
}

@media (max-width: 540px) {
  .offer-form {
    padding: 20px;
    border-radius: 18px;
  }

  .domain {
    letter-spacing: .22em;
  }
}