/* RESET */
*{
  margin:0;
  padding:0;
  box-sizing:border-box;
  font-family: "DM Sans", Arial, Helvetica, sans-serif;
}

body{
  background:#f9fafb;
  color:#0f172a;
}

/* SECTION */
.checkout-section{
  padding: 56px 6%;
}

/* LAYOUT */
.checkout-container{
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 32px;
  align-items: start;
}

/* LEFT */
.checkout-left h2{
  font-size: 30px;
  margin-bottom: 16px;
  letter-spacing: -0.4px;
}

.back-link{
  display:inline-flex;
  align-items:center;
  gap: 8px;
  text-decoration:none;
  color:#64748b;
  font-size: 15px;
  margin-bottom: 18px;
}

.back-link:hover{
  color:#0f172a;
}

.form-box{
  background:#fff;
  padding: 22px;
  border-radius: 14px;
  border: 1px solid #e5e7eb;
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.04);
}

.form-box h3{
  font-size: 18px;
  margin-bottom: 16px;
}

label{
  display:block;
  font-size: 15px;
  font-weight: 600;
  color:#0f172a;
  margin: 12px 0 8px;
}

.form-row{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

input, select{
  width:100%;
  padding: 12px 12px;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  font-size: 16px;
  outline:none;
  background:#fff;
}

input:focus, select:focus{
  border-color: #f97316;
  box-shadow: 0 0 0 4px rgba(249, 115, 22, 0.15);
}

/* Inspection */
.radio-row{
  display:flex;
  gap: 20px;
  align-items:center;
  padding: 10px 0 6px;
}

.radio-row label{
  margin: 0;
  font-weight: 600;
  color:#334155;
  font-size: 15px;
  display:flex;
  align-items:center;
  gap: 10px;
}

.radio-row input{
  transform: translateY(1px);
}

.hint{
  margin-top: 6px;
  font-size: 14px;
  color:#64748b;
}

/* RIGHT */
.summary-card{
  background:#fff;
  padding: 22px;
  border-radius: 14px;
  border: 1px solid #e5e7eb;
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.04);
  position: sticky;
  top: 18px;
}

.summary-card h3{
  font-size: 18px;
  margin-bottom: 12px;
}

.summary-items{
  display:flex;
  flex-direction:column;
  gap: 10px;
  margin-bottom: 10px;
}

.summary-item{
  display:flex;
  justify-content:space-between;
  gap: 12px;
  font-size: 15px;
  color:#334155;
}

.summary-item .left{
  line-height: 1.3;
}

.summary-item small{
  display:block;
  color:#64748b;
  font-size: 13px;
  margin-top: 4px;
}

.summary-item .right{
  font-weight: 700;
  color:#0f172a;
  white-space: nowrap;
}

.divider{
  height:1px;
  background:#eef2f7;
  margin: 12px 0;
}

.summary-line{
  display:flex;
  justify-content:space-between;
  padding: 8px 0;
  font-size: 16px;
  color:#334155;
}

.summary-total{
  display:flex;
  justify-content:space-between;
  align-items: baseline;
  margin-top: 8px;
  font-size: 18px;
}

.summary-total strong{
  font-size: 20px;
  color:#f97316;
}

.checkout-btn{
  width:100%;
  margin-top: 16px;
  padding: 14px;
  background:#f97316;
  color:#fff;
  border:none;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 700;
  cursor:pointer;
  transition: 0.25s ease;
}

.checkout-btn:hover{
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(249,115,22,0.22);
}

.note{
  font-size: 14px;
  margin-top: 10px;
  color:#64748b;
  line-height: 1.4;
}

/* RESPONSIVE */
@media (max-width: 980px){
  .checkout-container{
    grid-template-columns: 1fr;
  }
  .summary-card{
    position: static;
  }
}

@media (max-width: 650px){
  .checkout-section{
    padding: 40px 5%;
  }
  .checkout-left h2{
    font-size: 26px;
  }
  .form-row{
    grid-template-columns: 1fr;
  }
}
/* ===== TOAST ===== */
.cart-toast{
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 9999;

  background: #0f172a;
  color: #fff;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.12);
  box-shadow: 0 12px 30px rgba(0,0,0,0.2);

  font-size: 15px;
  font-weight: 600;

  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: 220ms ease;
  max-width: min(420px, calc(100vw - 36px));
}

.cart-toast.show{
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 650px){
  .cart-toast{
    left: 14px;
    right: 14px;
    bottom: 14px;
    max-width: unset;
  }
}