.checkout {
  padding: 96px 20px 80px;
  background: #fff;
  min-height: 100vh;
}

.checkout-container {
  max-width: 720px;
  margin: auto;
}

.checkout h1 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 36px;
  text-align: center;
}

/* BOX */
.checkout-box {
  border: 1px solid #e5e5e5;
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 28px;
  background: #fff;
}

.checkout-box h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
}

/* ORDER SUMMARY */
.order-summary {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.order-item {
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  color: #555;
}

/* TOTAL */
.total-row {
  display: flex;
  justify-content: space-between;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid #eee;
  font-size: 16px;
  font-weight: 700;
}

/* INPUTS */
.checkout-box input,
.checkout-box textarea {
  width: 100%;
  padding: 12px 14px;
  margin-bottom: 14px;
  border-radius: 10px;
  border: 1px solid #ddd;
  font-size: 14px;
}

.checkout-box textarea {
  min-height: 80px;
  resize: vertical;
}

/* BUTTON */
.checkout-btn {
  width: 100%;
  padding: 16px;
  border-radius: 40px;
  border: none;
  background: #000;
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .08em;
  cursor: pointer;
  transition: transform .2s ease, opacity .2s ease;
}

.checkout-btn:hover {
  opacity: .9;
  transform: translateY(-1px);
}

/* MOBILE */
@media (max-width: 480px) {
  .checkout h1 {
    font-size: 24px;
  }

  .checkout-box {
    padding: 20px;
  }
}