.cart-layout {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}
.cart-items-column {
    flex: 2;
}
.checkout-column {
    flex: 1;
    position: sticky;
    top: 2rem;
}
.cart-item {
    background: var(--background-color);
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.item-info h4 {
    margin: 0 0 0.5rem;
}
.item-price {
    font-weight: 600;
    color: var(--text-color);
}
.item-actions {
    display: flex;
    gap: 1rem;
}
.action-form { display: inline; }
.btn-link {
    background: none;
    border: none;
    color: var(--steel-blue);
    cursor: pointer;
    text-decoration: underline;
    font-size: 0.9rem;
}
.btn-link.remove { color: var(--tomato); }

.checkout-box {
    background: var(--background-color);
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 1.5rem;
}
.checkout-box h3 { margin-top: 0; }
.summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
    font-size: 1rem;
}
.summary-row.total {
    font-size: 1.2rem;
    font-weight: bold;
}
.guest-checkout label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}
.guest-checkout input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    margin-bottom: 1rem;
}
.empty-cart-message { text-align: center; padding: 3rem; background: var(--background-color); border-radius: 8px; }


/* --- Button Styles --- */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: 1px solid transparent;
    border-radius: 4px;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s;
    text-align: center;
}

.btn-primary {
    background-color: var(--steel-blue);
    color: var(--background-color);
    border-color: var(--steel-blue);
}

.btn-primary:hover {
    background-color: var(--cadet-blue);
    border-color: var(--cadet-blue);
}

.btn-secondary {
    background-color: var(--dark-gray);
    color: var(--background-color);
    border-color: var(--dark-gray);
}

.btn-secondary:hover {
    background-color: var(--dark-gray);
    border-color: var(--dark-gray);
}

.btn-danger {
    background-color: var(--tomato);
    color: var(--background-color);
    border-color: var(--tomato);
}

.btn-danger:hover {
    background-color: var(--tomato-dark);
    border-color: var(--tomato-dark);
}

.btn-block {
    width: 100%;
    display: block;
    padding: 1rem;
    font-size: 1rem;
    min-height: 48px;
}

/* Link-style buttons */
.btn-link {
    background: none;
    border: none;
    color: var(--steel-blue);
    cursor: pointer;
    text-decoration: underline;
    font-size: 0.9rem;
    padding: 0;
    transition: color 0.2s;
}

.btn-link:hover {
    color: var(--cadet-blue);
}

.btn-link.remove {
    color: var(--tomato);
}

.btn-link.remove:hover {
    color: var(--tomato-dark);
}

/* --- Form Group Styling (for the email input) --- */
.checkout-form .form-group.email-form-group {
  margin-bottom: 1.5rem; /* Space between email group and button */
}

.checkout-form .form-group.email-form-group label {
  display: block; /* Make label appear on its own line */
  margin-bottom: 0.5rem;
  font-weight: bold;
  color: var(--text-color);
  font-size: 0.95rem;
}

.checkout-form .form-group.email-form-group input[type="email"] {
  width: 100%;
  padding: 0.75rem 1rem; /* Good padding for input field */
  border: 1px solid var(--border-color, var(--border-color));
  border-radius: 0.25rem;
  font-size: 1rem;
  box-sizing: border-box; /* Include padding and border in element's total width and height */
  margin-bottom: 0.5rem; /* Space between input and disclaimer */
}

.checkout-form .form-group.email-form-group input[type="email"]:focus {
  outline: 2px solid var(--steel-blue);
  outline-offset: 2px;
  border-color: var(--steel-blue);
}

/* --- Disclaimer Styling --- */
.email-disclaimer {
  font-size: 0.85rem;
  line-height: 1.4;
  margin-top: 0.5rem; /* Ensure space from the input above */
  margin-bottom: 0; /* No extra margin below if it's the last element */
}