:root {
  --green: #0a7a3e;
  --bg: #f6fbf7;
  --card: #ffffff;
  --line: rgba(10,122,62,.2);
}

* {
  box-sizing: border-box;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

body {
  margin: 0;
  background: var(--bg);
  color: #0b1f14;
}

.container {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 16px;
}

.card {
  background: var(--card);
  width: 100%;
  max-width: 480px;
  padding: 24px;
  border-radius: 18px;
  border: 1px solid var(--line);
  box-shadow: 0 14px 40px rgba(0,0,0,.08);
  text-align: center;
}

h1 {
  margin: 0 0 6px;
}

.subtitle {
  margin: 0 0 16px;
  color: rgba(0,0,0,.65);
  font-size: 14px;
}

input {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  margin-bottom: 12px;
  font-size: 15px;
}

button {
  width: 100%;
  padding: 12px;
  border-radius: 14px;
  border: none;
  background: linear-gradient(135deg, #0ea44f, #0a7a3e);
  color: #fff;
  font-weight: 800;
  cursor: pointer;
}

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

#hasil {
  margin-top: 16px;
  text-align: left;
  font-size: 14px;
}

.result {
  background: #f1fbf4;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px;
}

.status {
  margin-top: 8px;
  font-weight: 900;
  color: var(--green);
}

footer {
  margin-top: 16px;
  font-size: 12px;
  color: rgba(0,0,0,.55);
}
/* tombol WhatsApp */
.btn-wa {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
  padding: 12px 14px;
  background: #25D366;
  color: #fff;
  border-radius: 14px;
  text-decoration: none;
  font-weight: 800;
  justify-content: center;
}

.btn-wa i {
  font-size: 18px;
}

.btn-home {
  display: block;
  margin-top: 12px;
  padding: 12px;
  text-align: center;
  background-color: #0a7a3e;
  color: #ffffff;
  text-decoration: none;
  border-radius: 8px;
  font-weight: 600;
  transition: background-color 0.2s ease;
}

.btn-home:hover {
  background-color: #086633;
}