* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  padding: 40px 20px 56px;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  color: #142033;
  background: #ffffff;
}

h1 {
  margin: 0 0 24px;
  text-align: center;
  font-size: clamp(2.1rem, 5vw, 3.2rem);
  letter-spacing: 0.06em;
  color: #1b2a45;
}

form {
  max-width: 760px;
  margin: 0 auto 28px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  border: 1px solid rgba(60, 86, 140, 0.14);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 16px 40px rgba(26, 46, 82, 0.12);
  backdrop-filter: blur(10px);
}

label {
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: #51627f;
}

input {
  width: 100%;
  border: 1px solid rgba(77, 99, 148, 0.18);
  border-radius: 14px;
  padding: 14px 16px;
  color: #142033;
  background: rgba(247, 249, 255, 0.9);
  outline: none;
}

input::placeholder {
  color: #8a97ad;
}

input:focus {
  border-color: rgba(88, 114, 255, 0.72);
  box-shadow: 0 0 0 4px rgba(88, 114, 255, 0.14);
}

form button {
  justify-self: start;
}

button {
  cursor: pointer;
  border: none;
  border-radius: 999px;
  padding: 10px 16px;
  color: #fff;
  font-weight: 700;
  background: #2563eb;
  transition: transform 160ms ease, box-shadow 160ms ease, filter 160ms ease;
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 28px rgba(79, 109, 246, 0.28);
  filter: brightness(1.03);
}

#all-messages {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

#all-messages div {
  padding: 16px 18px;
  border: 1px solid rgba(77, 99, 148, 0.12);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.84);
  box-shadow: 0 12px 28px rgba(26, 46, 82, 0.08);
}

#all-messages span {
  margin-right: 10px;
  line-height: 1.5;
}

#all-messages div span:first-child {
  display: block;
  margin-bottom: 10px;
  font-size: 1.02rem;
  color: #1f314d;
}

#all-messages div span:not(:first-child) {
  display: inline-block;
  margin-bottom: 8px;
  padding: 4px 10px;
  border-radius: 999px;
  color: #4e6290;
  background: rgba(88, 114, 255, 0.08);
}

#all-messages div button {
  margin: 6px 10px 0 0;
  padding: 8px 14px;
}

@media (max-width: 640px) {
  body {
    padding: 24px 14px 40px;
  }

  form,
  #all-messages {
    max-width: 100%;
  }

  #all-messages div {
    padding: 14px;
  }

  button {
    width: 100%;
  }
}