html,body,#root{width:100%;min-height:100vh}body{background:#f6f7fb;font-family:Inter,sans-serif}.checkout-page{min-height:100vh;padding:30px}.checkout-header{text-align:center;margin-bottom:30px}.checkout-header h1{color:#4f46e5}.checkout-container{grid-template-columns:2fr 1fr;gap:30px;max-width:1300px;margin:auto;display:grid}.left-panel,.right-panel{background:#fff;border-radius:20px;padding:25px;box-shadow:0 8px 30px #0000000f}.address-card{background:#f8fafc;border-radius:15px;margin-bottom:25px;padding:20px}.product-card{border:1px solid #eee;border-radius:15px;align-items:center;gap:20px;margin-bottom:15px;padding:20px;display:flex}.product-card img{object-fit:cover;border-radius:12px;width:120px;height:120px}.product-info{flex:1}.price{font-size:20px;font-weight:700}.summary-row{justify-content:space-between;margin:16px 0;display:flex}.total{font-size:24px;font-weight:700}.pay-btn{color:#fff;cursor:pointer;background:linear-gradient(135deg,#6366f1,#4f46e5);border:none;border-radius:14px;width:100%;margin-top:20px;padding:18px;font-size:18px;font-weight:600}.pay-btn:hover{opacity:.95}.secure-box{text-align:center;background:#f8fafc;border-radius:12px;margin-top:20px;padding:15px}@media (width<=900px){.checkout-container{grid-template-columns:1fr}.product-card{text-align:center;flex-direction:column}}.user-selector-container{justify-content:center;align-items:center;gap:10px;margin-top:15px;display:flex}.user-select-dropdown{color:#374151;cursor:pointer;background-color:#fff;border:1px solid #d1d5db;border-radius:8px;outline:none;padding:8px 12px;font-family:inherit;font-size:14px;transition:border-color .15s ease-in-out}.user-select-dropdown:focus{border-color:#4f46e5}.success-container{background:linear-gradient(135deg,#f5f7fa,#e4ecfb);justify-content:center;align-items:center;min-height:100vh;padding:20px;display:flex}.success-card{text-align:center;background:#fff;border-radius:20px;width:100%;max-width:500px;padding:40px;box-shadow:0 10px 30px #0000001a}.success-icon{color:#fff;background:#22c55e;border-radius:50%;justify-content:center;align-items:center;width:90px;height:90px;margin:0 auto 20px;font-size:40px;font-weight:700;display:flex}.success-card h1{color:#16a34a;margin-bottom:10px}.success-message{color:#666;margin-bottom:30px;line-height:1.6}.payment-details{background:#f8fafc;border-radius:12px;margin-bottom:25px;padding:20px}.detail-row{border-bottom:1px solid #e5e7eb;justify-content:space-between;padding:12px 0;display:flex}.detail-row:last-child{border-bottom:none}.detail-row span:first-child{color:#555;font-weight:500}.detail-row span:last-child{color:#111;font-weight:600}.paid{color:#16a34a!important}.home-btn{color:#fff;cursor:pointer;background:#2563eb;border:none;border-radius:10px;width:100%;padding:14px;font-size:16px;transition:all .3s}*{box-sizing:border-box;margin:0;padding:0}.failure-container{background:linear-gradient(135deg,#fff5f5,#ffe5e5);justify-content:center;align-items:center;min-height:100vh;padding:20px;display:flex}.failure-card{text-align:center;background:#fff;border-radius:20px;width:100%;max-width:500px;padding:40px;box-shadow:0 10px 30px #0000001a}.failure-icon{color:#fff;background:#ef4444;border-radius:50%;justify-content:center;align-items:center;width:90px;height:90px;margin:0 auto 20px;font-size:40px;font-weight:700;display:flex}.failure-card h1{color:#dc2626;margin-bottom:10px}.failure-message{color:#666;margin-bottom:30px;line-height:1.6}.failure-details{background:#f8fafc;border-radius:12px;margin-bottom:25px;padding:20px}.detail-row{justify-content:space-between;padding:12px 0;display:flex}.failed{color:#dc2626;font-weight:600}.button-group{gap:12px;display:flex}.retry-btn,.home-btn{cursor:pointer;border:none;border-radius:10px;flex:1;padding:14px;font-size:15px;transition:all .3s}.retry-btn{color:#fff;background:#ef4444}.retry-btn:hover{background:#dc2626}.home-btn{color:#fff;background:#2563eb}.home-btn:hover{background:#1d4ed8}@media (width<=500px){.button-group{flex-direction:column}}