.checkout-page{background-color:var(--bg);flex-direction:column;min-height:100vh;padding:120px 0 0;display:flex}.checkout-container{flex:1;grid-template-columns:1fr 400px;align-items:flex-start;gap:30px;width:100%;max-width:1420px;margin:0 auto 60px;padding:0 40px;display:grid}.checkout-form-area{width:100%}.checkout-header{margin-bottom:40px}.checkout-title{font-family:var(--font-outfit),sans-serif;color:var(--text);margin-bottom:12px;font-size:clamp(28px,5vw,42px);font-weight:700}.checkout-subtitle{color:var(--text-secondary);font-size:16px}.fieldset-section{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-xl);box-shadow:var(--shadow-sm);transition:var(--transition);margin-bottom:32px;padding:clamp(20px,4vw,32px)}.fieldset-section:hover{box-shadow:var(--shadow-md);border-color:var(--primary-light)}.fieldset-legend{font-family:var(--font-outfit),sans-serif;color:var(--primary);border-bottom:1px solid var(--border);width:100%;margin-bottom:24px;padding-bottom:12px;font-size:18px;font-weight:600;display:block}.form-grid{grid-template-columns:1fr 1fr;gap:24px;display:grid}.form-grid-full{grid-column:span 2}.form-group{flex-direction:column;gap:8px;display:flex}.form-label{color:var(--text);font-size:14px;font-weight:500}.form-input{background:var(--bg-alt);border:1px solid var(--border);border-radius:var(--radius-md);width:100%;height:48px;color:var(--text);transition:var(--transition);padding:0 16px;font-family:inherit;font-size:15px}.form-input:focus{border-color:var(--primary);background:var(--bg-white);box-shadow:0 0 0 4px var(--primary-light);outline:none}.form-input.input-invalid{border-color:var(--rose);background:#f43f5e0d}.form-input.input-valid{border-color:var(--emerald);background:#10b9810d}.form-error{color:var(--rose);margin-top:4px;font-size:12px}.order-summary-sticky{position:sticky;top:100px}.order-summary-card{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-2xl);box-shadow:var(--shadow-xl);padding:clamp(24px,5vw,32px);position:relative;overflow:hidden}.order-summary-card:before{content:"";background:var(--gradient-primary);width:100%;height:4px;position:absolute;top:0;left:0}.os-header{font-family:var(--font-outfit),sans-serif;margin-bottom:24px;font-size:20px;font-weight:700}.os-plan-details{background:var(--bg-alt);border-radius:var(--radius-lg);gap:16px;margin-bottom:24px;padding:20px;display:flex}.os-plan-icon{background:var(--bg-white);border-radius:var(--radius-md);width:48px;height:48px;color:var(--primary);box-shadow:var(--shadow-sm);justify-content:center;align-items:center;font-size:24px;display:flex}.os-plan-name{margin-bottom:4px;font-size:16px;font-weight:600}.os-plan-price{color:var(--text-secondary);font-size:14px}.os-section{border-top:1px solid var(--border);padding:24px 0}.os-section-label{margin-bottom:12px;font-size:14px;font-weight:600;display:block}.cost-breakdown{flex-direction:column;gap:12px;display:flex}.cost-row{color:var(--text-secondary);justify-content:space-between;font-size:14px;display:flex}.cost-row-total{border-top:1px dashed var(--border);color:var(--text);margin-top:8px;padding-top:16px;font-size:18px;font-weight:700}.coupon-input-group{gap:8px;display:flex}.coupon-input-group .form-input{flex:1}.payment-method-card{border:1px solid var(--border);border-radius:var(--radius-lg);cursor:pointer;transition:var(--transition);align-items:center;padding:16px;display:flex}.payment-method-card:hover{border-color:var(--primary)}.payment-method-card.active{border-color:var(--primary);background:var(--primary-light)}@media (max-width:1024px){.checkout-page{padding:100px 0 0}.checkout-container{grid-template-columns:1fr;gap:20px;width:100%;padding:0 20px}.order-summary-sticky{order:1;margin-bottom:40px;position:static}.checkout-title{text-align:center}.checkout-subtitle{text-align:center;margin-bottom:20px}}@media (max-width:768px){.form-grid{grid-template-columns:1fr;gap:16px}.form-grid-full{grid-column:span 1}}