*,*:before,*:after{box-sizing:border-box}body{background:#f4f6fb;font-family:Inter,sans-serif;color:#1a1a2e;min-height:100vh}.checkout-header{background:#fff;border-bottom:1px solid #e8eaf0;padding:14px 24px;display:flex;align-items:center;gap:16px;position:sticky;top:0;z-index:100;box-shadow:0 2px 8px #0000000f}.checkout-header img{height:36px}.checkout-header .back-link{font-size:13px;color:#666;text-decoration:none;display:flex;align-items:center;gap:6px}.checkout-header .back-link:hover{color:#0a84ff}.header-title{font-size:16px;font-weight:700;color:#1a1a2e;margin-left:auto;margin-right:auto}.checkout-wrapper{max-width:1100px;margin:32px auto;padding:0 16px 60px;display:grid;grid-template-columns:1fr 420px;gap:28px;align-items:start}@media (max-width: 900px){.checkout-wrapper{grid-template-columns:1fr}.order-summary-col{order:-1}}.checkout-card{background:#fff;border-radius:16px;padding:28px;box-shadow:0 2px 16px #00000012;margin-bottom:20px}.section-title{font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:#888;margin-bottom:18px;padding-bottom:10px;border-bottom:1px solid #f0f0f0}.form-label{font-size:12px;font-weight:600;color:#555;margin-bottom:5px}.form-control,.form-select{border:1.5px solid #e2e6f0;border-radius:10px;padding:10px 14px;font-size:14px;transition:border-color .2s,box-shadow .2s}.form-control:focus,.form-select:focus{border-color:#0a84ff;box-shadow:0 0 0 3px #0a84ff1f;outline:none}.form-control.is-invalid{border-color:#ff3b30}.same-toggle{display:flex;align-items:center;gap:10px;background:#f8f9ff;border:1.5px solid #e2e6f0;border-radius:10px;padding:12px 16px;cursor:pointer;margin-bottom:16px;transition:background .2s}.same-toggle input{accent-color:#0a84ff;width:16px;height:16px;cursor:pointer}.same-toggle label{font-size:13px;font-weight:500;color:#444;cursor:pointer;margin:0}.order-item{display:flex;align-items:center;gap:14px;padding:14px 0;border-bottom:1px solid #f4f4f4}.order-item:last-child{border-bottom:none}.order-item-img{width:64px;height:64px;border-radius:10px;object-fit:cover;border:1px solid #eee;background:#f8f8f8;flex-shrink:0}.order-item-name{font-size:14px;font-weight:600;color:#1a1a2e;line-height:1.3}.order-item-qty{font-size:12px;color:#888;margin-top:3px}.order-item-price{margin-left:auto;font-size:15px;font-weight:700;color:#1a1a2e;white-space:nowrap}.price-row{display:flex;justify-content:space-between;font-size:14px;color:#555;padding:7px 0}.price-row.total{font-size:18px;font-weight:700;color:#1a1a2e;border-top:2px solid #f0f0f0;margin-top:6px;padding-top:14px}.savings-badge{background:#e8fff2;color:#1a9e4e;font-size:11px;font-weight:700;border-radius:6px;padding:3px 8px}.btn-pay{width:100%;padding:15px;background:linear-gradient(135deg,#0a84ff,#0060df);color:#fff;border:none;border-radius:12px;font-size:16px;font-weight:700;cursor:pointer;transition:transform .15s,box-shadow .15s;display:flex;align-items:center;justify-content:center;gap:10px;margin-top:20px}.btn-pay:hover{transform:translateY(-2px);box-shadow:0 8px 24px #0a84ff59}.btn-pay:disabled{opacity:.6;cursor:not-allowed;transform:none}.secure-note{text-align:center;font-size:12px;color:#aaa;margin-top:12px;display:flex;align-items:center;justify-content:center;gap:6px}.gst-toggle-btn{background:none;border:1.5px dashed #c0c8e0;border-radius:10px;padding:10px 16px;font-size:13px;color:#0a84ff;font-weight:600;cursor:pointer;width:100%;text-align:left;transition:background .2s;margin-top:4px}.gst-toggle-btn:hover{background:#f0f5ff}.steps-bar{display:flex;align-items:center;gap:0;font-size:12px;font-weight:600;color:#aaa;margin-bottom:4px;flex-wrap:wrap;gap:4px}.step-active{color:#0a84ff}.step-sep{color:#ddd;font-size:10px}.empty-cart{text-align:center;padding:60px 20px}.empty-cart i{font-size:48px;color:#ddd;margin-bottom:16px}.empty-cart p{color:#888;margin-bottom:20px}