:root {
  --bg-sand: #f3e7d3;
  --bg-ember: #f7b267;
  --bg-clay: #c8553d;
  --ink: #1f1b16;
  --ink-soft: #4a3f35;
  --accent: #1f7a8c;
  --accent-2: #2f8f3a;
  --card: #fffaf2;
  --shadow: rgba(0, 0, 0, 0.15);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Gill Sans", "Trebuchet MS", "Candara", sans-serif;
  color: var(--ink);
  background: var(--bg-sand);
}

.page-bg {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 10% 10%, rgba(31, 122, 140, 0.15), transparent 40%),
    radial-gradient(circle at 90% 20%, rgba(47, 143, 58, 0.18), transparent 45%),
    linear-gradient(160deg, var(--bg-sand) 0%, var(--bg-ember) 55%, var(--bg-clay) 100%);
  z-index: -1;
}

.hero {
  padding: 32px 20px 20px;
  text-align: left;
  animation: fadeUp 0.7s ease-out both;
}

.tag {
  display: inline-block;
  padding: 6px 10px;
  background: var(--accent);
  color: #fff;
  border-radius: 999px;
  font-size: 0.85rem;
  letter-spacing: 0.4px;
}

h1 {
  margin: 14px 0 8px;
  font-size: 2.1rem;
  line-height: 1.1;
}

.subtitle {
  margin: 0;
  color: var(--ink-soft);
}

.card {
  margin: 0 16px 20px;
  padding: 20px;
  background: var(--card);
  border-radius: 16px;
  box-shadow: 0 10px 24px var(--shadow);
  animation: fadeUp 0.9s ease-out both;
}

.section {
  margin-bottom: 20px;
}

label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
}

select,
input {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 2px solid #ead9c3;
  background: #fff;
  font-size: 1rem;
}

.details {
  display: grid;
  gap: 12px;
  animation: stagger 0.8s ease-out both;
}

.detail {
  padding: 12px;
  border-radius: 12px;
  background: #fff4e3;
  border: 1px solid #f0dcc2;
}

.detail h3 {
  margin: 0 0 6px;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.input-row {
  display: grid;
  gap: 10px;
}

.input-grid {
  display: grid;
  gap: 10px;
  margin-bottom: 10px;
}

button {
  padding: 12px 14px;
  border: none;
  border-radius: 12px;
  background: var(--accent-2);
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(47, 143, 58, 0.35);
}

.hint {
  margin-top: 4px;
  color: var(--ink-soft);
}

.message {
  margin-top: 10px;
  font-weight: 600;
  color: var(--accent);
  min-height: 1.2em;
}

.hidden {
  display: none;
}

.footer {
  padding: 16px 20px 28px;
  font-size: 0.85rem;
  color: var(--ink-soft);
}

@media (min-width: 720px) {
  .hero,
  .card,
  .footer {
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
  }

  .input-row {
    grid-template-columns: 1fr auto;
  }

  h1 {
    font-size: 2.6rem;
  }
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes stagger {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}