:root{--primary:#4f46e5;--primary-hover:#4338ca;--text:#111827;--text-light:#6b7280;--border:#e5e7eb;--bg-light:#f9fafb;--error:#ef4444;--success:#10b981;--card-shadow:0 4px 6px rgba(0,0,0,0.05);--page-shadow:0 2px 4px rgba(0,0,0,0.1)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;background-color:#f5f5f5}.containert{max-width:1200px;margin:100px auto;background:white;border-radius:16px;box-shadow:var(--page-shadow);overflow:hidden}.header-t{padding:32px 24px;border-bottom:1px solid var(--border);text-align:center;background:linear-gradient(135deg,#667eea 0,#764ba2 100%)}.header-t h1{font-size:2rem;line-height:1.3;margin-bottom:12px;color:white;font-weight:700;text-align:center}.header-t p{color:rgba(255,255,255,0.9);font-size:1rem;text-align:center;max-width:80%;margin-left:auto;margin-right:auto}.main-content{padding:32px}.upload-section{text-align:center;padding:60px 40px;border:2px dashed var(--border);border-radius:16px;background-color:var(--bg-light);transition:all .3s ease;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center}.upload-section:hover{border-color:var(--primary);background-color:rgba(79,70,229,0.05)}.upload-section.active{border-color:var(--primary);background-color:rgba(79,70,229,0.1)}.upload-icon{font-size:56px;color:var(--primary);margin-bottom:20px;display:block}.upload-icon i{margin:0 8px}.upload-text{font-size:1.25rem;font-weight:600;color:var(--text);margin-bottom:8px;text-align:center}.upload-hint{font-size:.9rem;color:var(--text-light);margin-bottom:24px;text-align:center}.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 28px;border-radius:10px;font-weight:600;cursor:pointer;transition:all .2s ease;border:0;outline:0;font-size:.95rem;gap:8px}.btn-primary{background-color:var(--primary);color:white}.btn-primary:hover:not(:disabled){background-color:var(--primary-hover);transform:translateY(-1px);box-shadow:0 4px 12px rgba(79,70,229,0.3)}.btn-success{background-color:var(--success);color:white}.btn-success:hover:not(:disabled){background-color:#0d9488;transform:translateY(-1px)}.btn-outline{background-color:transparent;color:var(--primary);border:1.5px solid var(--primary)}.btn-outline:hover:not(:disabled){background-color:rgba(79,70,229,0.1);transform:translateY(-1px)}.btn:disabled{opacity:.5;cursor:not-allowed}.loading{text-align:center;padding:40px;background-color:rgba(255,255,255,0.95);border-radius:12px;margin:20px 0}.loading i{font-size:32px;color:var(--primary);margin-right:12px}.file-list{margin-top:24px;border:1px solid var(--border);border-radius:12px;overflow:hidden}.file-list-header{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;background-color:var(--bg-light);border-bottom:1px solid var(--border)}.file-list-title{font-weight:600;color:var(--text);font-size:1rem}#fileCount{color:var(--text-light);font-size:.9rem}.file-list-items{max-height:400px;overflow-y:auto}.file-item{display:flex;align-items:center;padding:16px 20px;border-bottom:1px solid var(--border);transition:background-color .2s ease}.file-item:hover{background-color:var(--bg-light)}.file-icon{font-size:28px;color:var(--primary);margin-right:16px;min-width:40px;text-align:center}.file-item-info{flex:1}.file-item-name{font-weight:500;color:var(--text);margin-bottom:4px;word-break:break-all}.file-item-size{font-size:.8rem;color:var(--text-light)}.file-item-type{font-size:.7rem;color:var(--primary);margin-top:2px;text-transform:uppercase}.file-item-actions{display:flex;gap:8px}.file-item-btn{width:32px;height:32px;border-radius:6px;border:1px solid var(--border);background-color:white;cursor:pointer;transition:all .2s ease;display:inline-flex;align-items:center;justify-content:center}.file-item-btn:hover{background-color:var(--primary);color:white;border-color:var(--primary)}.file-item-btn.remove-file:hover{background-color:var(--error);border-color:var(--error)}.options-section{margin-top:24px;padding:24px;background:linear-gradient(135deg,#f8f9fa 0,#fff 100%);border-radius:12px;border:1px solid var(--border)}.options-title{font-size:1.2rem;font-weight:700;margin-bottom:20px;color:var(--primary);display:flex;align-items:center;gap:10px}.options-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}.option-group{display:flex;flex-direction:column;gap:12px}.option-label{font-weight:600;color:var(--text);font-size:.9rem}.radio-group{display:flex;gap:16px;flex-wrap:wrap}.radio-option{display:flex;align-items:center;gap:8px;cursor:pointer}.radio-option input[type="radio"]{width:18px;height:18px;cursor:pointer;accent-color:var(--primary)}.radio-option label{cursor:pointer;color:var(--text)}.checkbox-option{display:flex;align-items:center;gap:8px;margin-bottom:8px}.checkbox-option input[type="checkbox"]{width:18px;height:18px;cursor:pointer;accent-color:var(--primary)}.checkbox-option label{cursor:pointer;color:var(--text)}.action-buttons{display:flex;justify-content:center;gap:16px;margin-top:24px;padding-top:24px;border-top:1px solid var(--border)}.drag-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:rgba(79,70,229,0.95);z-index:10000;display:flex;align-items:center;justify-content:center;pointer-events:none}.drag-message{font-size:2rem;font-weight:700;color:white;text-align:center;padding:40px;border:3px dashed white;border-radius:20px;background-color:rgba(255,255,255,0.1)}.toast{position:fixed;bottom:30px;right:30px;padding:16px 24px;border-radius:12px;display:flex;align-items:center;gap:12px;z-index:10001;box-shadow:0 4px 20px rgba(0,0,0,0.15);animation:slideIn .3s ease forwards;max-width:400px}.toast.success{background:linear-gradient(135deg,var(--success) 0,#0d9488 100%);color:white}.toast.error{background:linear-gradient(135deg,var(--error) 0,#dc2626 100%);color:white}.toast.info{background:linear-gradient(135deg,var(--primary) 0,var(--primary-hover) 100%);color:white}.toast-icon{font-size:1.2rem;font-weight:bold}.toast-message{font-size:.9rem;font-weight:500}.how-to-section-wrapper{max-width:1200px;margin:60px auto;padding:0 20px}.how-to-section-wrapper h2{text-align:center;font-size:2rem;color:#333;margin-bottom:40px}.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}.step-card{background-color:#fff;padding:30px;border-radius:12px;border:1px solid #e9ecef;text-align:left;box-shadow:0 5px 15px rgba(0,0,0,0.05);transition:transform .3s ease,box-shadow .3s ease}.step-card:hover{transform:translateY(-5px);box-shadow:0 10px 30px rgba(0,0,0,0.1)}.step-card .step-number{font-size:1.5rem;font-weight:700;color:#fff;background-color:#0d47a1;width:45px;height:45px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin-bottom:20px}.step-card h3{font-size:1.3rem;margin-bottom:10px;color:#222}.step-card p{color:#666;line-height:1.6;font-size:1rem;margin:0}.content-wrapper{max-width:1200px;margin:60px auto;padding:40px;background-color:#f8f9fa;border-radius:16px;border:1px solid #e9ecef;line-height:1.7;color:#333}.content-wrapper h2{font-size:1.8rem;font-weight:700;color:var(--primary);margin-top:40px;margin-bottom:20px}.content-wrapper h2:first-child{margin-top:0}.content-wrapper h3{font-size:1.3rem;font-weight:600;color:var(--primary);margin-top:30px;margin-bottom:15px}.content-wrapper p{margin-bottom:20px;line-height:1.7;color:#555}.content-wrapper ul{list-style:none;padding-left:0;margin-bottom:30px}.content-wrapper ul li{position:relative;padding-left:30px;margin-bottom:12px;color:#444}.content-wrapper ul li i{position:absolute;left:0;top:4px;color:var(--success);font-size:1rem}.content-wrapper a{color:var(--primary);text-decoration:none;font-weight:500}.content-wrapper a:hover{text-decoration:underline}@keyframes slideIn{from{transform:translateX(100%);opacity:0}to{transform:translateX(0);opacity:1}}@media(max-width:768px){.containert{margin:60px 16px;border-radius:12px}.main-content{padding:20px}.header-t h1{font-size:1.5rem}.header-t p{max-width:95%}.upload-section{padding:40px 20px}.upload-icon{font-size:48px}.upload-text{font-size:1.1rem}.options-grid{grid-template-columns:1fr}.action-buttons{flex-direction:column}.action-buttons .btn{width:100%}.steps-grid{grid-template-columns:1fr;gap:20px}.how-to-section-wrapper h2{font-size:1.5rem}.content-wrapper{margin:40px 16px;padding:20px}.content-wrapper h2{font-size:1.5rem}.file-item{flex-wrap:wrap}.file-item-actions{margin-top:12px;width:100%;justify-content:flex-end}.toast{left:20px;right:20px;bottom:20px;max-width:calc(100% - 40px)}}@media(max-width:480px){.header-t{padding:20px 16px}.header-t h1{font-size:1.3rem}.main-content{padding:16px}.upload-section{padding:30px 16px}.upload-icon{font-size:40px}.upload-text{font-size:1rem}.upload-hint{font-size:.8rem}.btn{padding:10px 20px;font-size:.85rem}.step-card{padding:20px}.step-card h3{font-size:1.1rem}.step-card p{font-size:.9rem}.content-wrapper{padding:16px}}