:root{--primary-color: #1a1a1a;--secondary-color: #2979ff;--accent-color: #f44336;--text-color: #e0e0e0;--light-bg: #2d2d2d;--dark-bg: #121212;--card-bg: #1d1d1d;--border-color: #404040;--success-color: #4CAF50}.checkout-container{max-width:1200px;margin:3rem auto;padding:0 1rem;color:var(--text-color)}.page-title{text-align:center;margin-bottom:2rem;color:#fff}.checkout-layout{display:grid;grid-template-columns:2fr 1fr;gap:2rem}@media (max-width: 768px){.checkout-layout{grid-template-columns:1fr}}.checkout-section{background:var(--card-bg);border-radius:8px;padding:1.5rem;margin-bottom:2rem}.section-title{font-size:1.3rem;margin-bottom:1.5rem;color:#fff;padding-bottom:.5rem;border-bottom:1px solid var(--border-color)}.form-group{margin-bottom:1.5rem}.form-label{display:block;margin-bottom:.5rem;font-weight:500}.form-control{width:100%;padding:.75rem;border-radius:4px;border:1px solid var(--border-color);background:var(--light-bg);color:var(--text-color);font-size:1rem}.form-control:focus{outline:none;border-color:var(--secondary-color)}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.checkbox-group{display:flex;align-items:center;gap:.5rem;margin:1rem 0}.checkbox-group input[type=checkbox]{accent-color:var(--secondary-color)}.create-account-section{margin-top:1rem;padding-top:1rem;border-top:1px solid var(--border-color)}.order-summary{background:var(--card-bg);border-radius:8px;padding:1.5rem;position:sticky;top:2rem}.summary-title{font-size:1.3rem;margin-bottom:1.5rem;color:#fff;padding-bottom:.5rem;border-bottom:1px solid var(--border-color)}.order-details{margin-bottom:1.5rem}.order-item{display:flex;justify-content:space-between;margin-bottom:1rem;padding-bottom:1rem;border-bottom:1px solid var(--border-color)}.item-name{flex-grow:1}.item-price{font-weight:700;color:#fff}.free-badge{display:inline-block;background:var(--success-color);color:#fff;font-weight:700;padding:.25rem .5rem;border-radius:4px;margin-left:.5rem;font-size:.8rem}.summary-row{display:flex;justify-content:space-between;margin-bottom:1rem}.summary-row.total{font-size:1.2rem;font-weight:700;color:#fff;padding-top:1rem;border-top:1px solid var(--border-color)}.summary-label{color:var(--text-color)}.summary-value{font-weight:700;color:#fff}.payment-methods{margin:1.5rem 0}.payment-option{display:flex;align-items:center;gap:.5rem;margin-bottom:1rem;padding:.75rem;border:1px solid var(--border-color);border-radius:4px;cursor:pointer;transition:all .3s}.payment-option:hover,.payment-option.active{border-color:var(--secondary-color);background:#2979ff1a}.payment-option input[type=radio]{accent-color:var(--secondary-color)}.free-notice{display:flex;align-items:center;gap:.5rem;background:#4caf501a;border:1px solid var(--success-color);padding:.75rem;border-radius:4px;margin:1rem 0}.free-notice i{color:var(--success-color)}.payment-details{margin-top:1rem;padding:1rem;border-radius:4px;background:var(--light-bg)}.place-order-btn{display:block;width:100%;padding:1rem;background:var(--accent-color);color:#fff;border:none;border-radius:4px;font-weight:700;cursor:pointer;transition:background-color .3s;font-size:1.1rem;text-align:center;margin-top:1.5rem}.place-order-btn:hover{background:#d32f2f}.place-order-btn:disabled{background:#999;cursor:not-allowed}.back-to-cart{display:block;text-align:center;margin-top:1rem;color:var(--secondary-color);text-decoration:none}.back-to-cart:hover{text-decoration:underline}