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

html, body {
  min-width: 300px;
  font-family: 'Poppins', sans-serif;
}

a, a:link, a:visited, a:hover, a:active {
  text-decoration: none;
}

.side-nav {
  position: sticky;
  top: 0;
  height: 100vh;
  width: 200px;
  float: left;
  background-color: saddlebrown;
  padding: 2rem 1rem;
}

.side-nav ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.side-nav a {
  color: white;
  font-weight: 600;
  font-size: 1.05rem;
}

.side-nav a:hover {
  color: chocolate;
}

.content {
  margin-left: 200px;
  padding: 2rem;
}

.content h1 {
  margin-bottom: 1.5rem;
}

.shop-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  background-color: lightgrey;
  border: 1px solid lavender;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.shop-column h2 {
  margin-bottom: 1rem;
  font-size: 1.2rem;
}

.option-row {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 0.9rem;
}

.option-row img {
  width: 50px;
  height: 50px;
}

.option-row label,
.option-row input[type="radio"],
.option-row input[type="checkbox"] {
  cursor: pointer;
}

/* 3 pictures per row for the shirt designs */
.design-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.design-item {
  text-align: center;
}

.design-item img {
  width: 100%;
  max-width: 80px;
  height: auto;
  cursor: pointer;
}

.design-item p {
  margin-top: 0.4rem;
  font-size: 0.9rem;
}

img:hover {
  background-color: peachpuff;
}

#designSelect {
  font-family: 'Poppins', sans-serif;
  padding: 0.4rem;
  border: 1px solid lightgray;
  cursor: pointer;
}

.cart-section {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.cart-section label {
  font-weight: 600;
}

#cartTotal {
  font-family: 'Poppins', sans-serif;
  font-size: 1rem;
  padding: 0.5rem;
  border: 1px solid lightgray;
  background-color: lavender;
  width: 150px;
}

.payment-section button {
  font-family: 'Poppins', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  padding: 0.7rem 1.5rem;
  border: none;
  background-color: saddlebrown;
  color: white;
  cursor: pointer;
}

.payment-section button:hover {
  background-color: maroon;
}

#paymentResult {
  margin-top: 1.5rem;
}

#paymentResult table {
  border-collapse: collapse;
  width: 100%;
  max-width: 500px;
  background-color: linen;
}

#paymentResult th,
#paymentResult td {
  border: 1px solid lavender;
  padding: 0.6rem;
  text-align: left;
}

#paymentResult th {
  background-color: saddlebrown;
  color: white;
}

#paymentResult p {
  margin-top: 1rem;
  font-weight: 600;
}