* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.payment-status {
  color: red;
  text-align: center;
  font-weight: 600;
  font-size: 16px;
  padding: 10px;
}
.payment-form {
  width: 100%;
  max-width: 550px;
}

.form {
  background: white;
  border-radius: 20px;
  padding: 40px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.form h2 {
  color: #1f2937;
  margin-bottom: 30px;
  font-size: 28px;
  text-align: center;
}

label {
  display: block;
  color: #374151;
  font-weight: 600;
  margin-bottom: 10px;
  margin-top: 20px;
  font-size: 14px;
}

label:first-of-type {
  margin-top: 0;
}

select,
input {
  width: 100%;
  padding: 15px;
  border: 2px solid #e5e7eb;
  border-radius: 10px;
  font-size: 16px;
  transition: all 0.3s ease;
  font-family: inherit;
}

select:focus,
input:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* ── Payment Methods ── */
.payment-methods {
  display: flex;
  flex-direction: row;
  align-items: stretch;
  gap: 1rem;
  margin-top: 10px;
  margin-bottom: 1.5rem;
}

.method-option {
  flex: 1;
  cursor: pointer;
}

.method-option input[type="radio"] {
  display: none;
}

.method-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px;
  border: 2px solid #e5e7eb;
  border-radius: 12px;
  transition: all 0.25s ease;
  background: #f9fafb;
  height: 100%;
}

.method-card i {
  font-size: 1.6rem;
  color: #888;
}

.method-card span {
  font-size: 0.9rem;
  font-weight: 600;
  color: #555;
}

.method-option.active .method-card {
  border-color: #2886f1;
  background: #eff6ff;
}

.method-option.active .method-card i,
.method-option.active .method-card span {
  color: #2886f1;
}

.method-option:hover .method-card {
  border-color: #667eea;
  background: #f0f4ff;
}

/* ── Amount Buttons ── */
.amount-btns {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 15px;
  margin-top: 10px;
}

.amount-btn {
  padding: 15px;
  border: 2px solid #e5e7eb;
  border-radius: 10px;
  background: white;
  color: #374151;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 14px;
}

.amount-btn:hover {
  border-color: #667eea;
  background: #f9fafb;
  transform: translateY(-2px);
}

.amount-btn.active {
  border-color: #667eea;
  background: #eef2ff;
  color: #667eea;
}

.amount-btn:active {
  transform: translateY(0);
}

/* ── Pay Button ── */
.payBtn {
  width: 100%;
  padding: 18px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  border-radius: 10px;
  font-size: 18px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 30px;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.payBtn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
}

.payBtn:active {
  transform: translateY(0);
}

.payBtn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.payBtn i {
  font-size: 16px;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .form {
    padding: 30px 25px;
  }

  .form h2 {
    font-size: 24px;
  }

  .amount-btns {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  body {
    padding: 10px;
  }

  .form {
    padding: 25px 20px;
  }

  .payment-methods {
    flex-direction: column;
  }

  .amount-btns {
    grid-template-columns: 1fr;
  }
}