:root {
  --red: #c0272d;
  --red-dark: #96181d;
  --ink: #232323;
  --muted: #6b6b6b;
  --bg: #f6f3ef;
  --card: #ffffff;
  --border: #ececec;
  --gold: #b8862b;
  --radius: 14px;
  --shadow: 0 8px 24px rgba(0,0,0,.06);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
}

.page {
  max-width: 640px;
  margin: 0 auto;
  padding: 20px 16px 60px;
}

.brand {
  text-align: center;
  padding: 28px 16px 16px;
}
.brand img { width: 76px; height: 76px; object-fit: contain; }
.brand h1 {
  font-size: 19px;
  margin: 10px 0 2px;
  color: var(--red);
}
.brand p {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
}

.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
  margin-bottom: 18px;
  border: 1px solid var(--border);
}

h2.section-title {
  font-size: 15px;
  color: var(--red);
  margin: 0 0 14px;
  text-transform: uppercase;
  letter-spacing: .5px;
}

label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin: 14px 0 6px;
  color: #444;
}
label.first { margin-top: 0; }

input[type=text],
input[type=email],
input[type=tel],
input[type=number],
input[type=password],
select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #ddd;
  border-radius: 10px;
  font-size: 15px;
  background: #fff;
  color: var(--ink);
}
input:focus, select:focus {
  outline: none;
  border-color: var(--red);
  box-shadow: 0 0 0 3px rgba(192,39,45,.12);
}

.choice-group {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.choice-btn {
  flex: 1;
  min-width: 90px;
  text-align: center;
  padding: 12px 10px;
  border: 1.5px solid #ddd;
  border-radius: 10px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  color: #555;
  background: #fff;
  user-select: none;
}
.choice-btn.active {
  border-color: var(--red);
  background: rgba(192,39,45,.07);
  color: var(--red);
}
.choice-btn input { display: none; }

.hidden { display: none !important; }

.bill-box {
  margin-top: 18px;
  background: #fbf8f4;
  border: 1px dashed var(--gold);
  border-radius: 12px;
  padding: 16px;
}
.bill-row {
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  padding: 4px 0;
  color: #555;
}
.bill-row.total {
  border-top: 1px solid #e5ddcf;
  margin-top: 6px;
  padding-top: 10px;
  font-weight: 700;
  color: var(--ink);
  font-size: 16px;
}
.bill-row.deposit {
  color: var(--gold);
  font-weight: 700;
}

button.submit-btn {
  width: 100%;
  padding: 15px;
  background: var(--red);
  color: #fff;
  border: none;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  margin-top: 20px;
  transition: background .15s;
}
button.submit-btn:hover { background: var(--red-dark); }
button.submit-btn:disabled { opacity: .6; cursor: not-allowed; }

.error-box {
  background: #fdecec;
  border: 1px solid #f3b9bb;
  color: #a11d22;
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 13px;
  margin-bottom: 16px;
}

.helper-text {
  font-size: 12px;
  color: var(--muted);
  margin-top: 4px;
}

.link-row {
  text-align: center;
  margin-top: 6px;
  font-size: 13px;
}
.link-row a { color: var(--red); text-decoration: none; font-weight: 600; }

.success-icon {
  width: 64px; height: 64px; margin: 0 auto 14px;
  background: var(--red); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 32px;
}

.ref-code {
  text-align: center;
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--red);
  border: 2px dashed var(--red);
  border-radius: 12px;
  padding: 14px;
  margin: 16px 0;
}

@media (min-width: 640px) {
  .page { padding-top: 32px; }
  .card { padding: 30px; }
}