html, body {
  height: 100%;
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #f2f4f6;
  color: #222;
}

.container {
  max-width: 480px;
  margin: 36px auto;
  padding: 0 16px;
}

h1 {
  font-size: 24px;
  margin: 0 0 6px 0;
  color: #0b3954;
}

p { margin: 0 0 14px 0; color: #4a5560; }

form {
  background: #fff;
  padding: 16px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.06);
  border: 1px solid #e6edf0;
}

label {
  display: block;
  font-weight: 600;
  font-size: 13px;
  margin-top: 10px;
  color: #16324a;
}

input[required] + label::after,
input[required] ~ label::after,
select[required] ~ label::after,
textarea[required] ~ label::after {
  content: " *";
  color: #cc2936;
  margin-left: 4px;
  font-weight: 700;
}

input, select, textarea {
  width: 100%;
  padding: 9px 10px;
  margin-top: 6px;
  border: 1px solid #d7dee2;
  border-radius: 6px;
  background: #fff;
  font-size: 14px;
  color: #0f2f3a;
  transition: border-color 0.12s ease, box-shadow 0.12s ease;
}

::placeholder { color: #9aa6ad; }

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: #2b6cb0;
  box-shadow: 0 6px 18px rgba(43,108,176,0.08);
}

textarea { resize: vertical; min-height: 70px; }

button {
  margin-top: 14px;
  padding: 9px 14px;
  border: none;
  border-radius: 6px;
  background: linear-gradient(180deg,#2b6cb0 0%, #1f4f83 100%);
  color: #fff;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(43,108,176,0.12);
}

button:hover { opacity: 0.96; }
button:active { transform: translateY(1px); }

@media (max-width: 480px) {
  .container { margin: 18px auto; padding: 0 12px; }
  form { padding: 12px; }
}