* {
  box-sizing: border-box;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto;
}

body {
  margin: 0;
  background: linear-gradient(135deg, #f5f8ff, #eef2ff);
  color: #0f172a;
}

/* ===== PAGE CENTER ===== */
.page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ===== CARD ===== */
.card {
  width: 420px;
  max-width: 92%;
  background: #fff;
  border-radius: 18px;
  padding: 28px;
  box-shadow: 0 25px 60px rgba(0,0,0,.12);
}

h1 {
  text-align: center;
  margin-top: 0;
  margin-bottom: 18px;
}

/* ===== FORM ===== */
label {
  font-weight: 600;
  display: block;
  margin-bottom: 6px;
}

input, select {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid #cbd5f5;
  margin-bottom: 14px;
  font-size: 15px;
}

input:focus, select:focus {
  outline: none;
  border-color: #2563eb;
}

/* ===== BUTTON ===== */
.btn-primary {
  width: 100%;
  padding: 14px;
  border-radius: 12px;
  background: linear-gradient(135deg,#2563eb,#1d4ed8);
  color: #fff;
  font-weight: 700;
  border: none;
  cursor: pointer;
  font-size: 15px;
}

.btn-primary:hover {
  opacity: .95;
}

/* ===== PRICE ===== */
.price {
  background: #3d3d3d;
  color: #ffd154;
  text-align: center;
  padding: 14px;
  border-radius: 12px;
  font-weight: 800;
  font-size: 18px;
  margin-bottom: 10px;
}

.total {
  background: #fff7ed;
  border: 1px dashed #fb923c;
  padding: 12px;
  border-radius: 10px;
  text-align: center;
  font-weight: 700;
  margin-bottom: 14px;
}

/* ===== BANK BOX ===== */
.bank-box {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 14px;
  font-size: 14px;
  margin-bottom: 16px;
}

/* ===== QR ===== */
.qr {
  display: flex;
  justify-content: center;
  margin: 16px 0;
}

.qr img {
  width: 220px;
  max-width: 100%;
  border-radius: 12px;
}

/* ===== CONTENT CODE ===== */
.code {
  font-family: monospace;
  background: #f1f5f9;
  padding: 8px 12px;
  border-radius: 8px;
  font-weight: 700;
  display: inline-block;
}

/* ===== NOTICE ===== */
.notice {
  font-size: 13px;
  text-align: center;
  color: #b91c1c;
}