:root{--primary:#4f46e5;--primary-hover:#4338ca;--secondary:#6b7280;--secondary-hover:#4b5563;--text:#111827;--text-light:#6b7280;--text-white:#fff;--border:#e5e7eb;--bg-light:#f9fafb;--error:#ef4444;--error-hover:#dc2626;--success:#10b981;--success-hover:#0d9488;--warning:#f59e0b;--card-shadow:0 4px 6px rgba(0,0,0,0.05);--page-shadow:0 2px 4px rgba(0,0,0,0.1);--hover-shadow:0 10px 15px -3px rgba(0,0,0,0.1)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:'Segoe UI',system-ui,-apple-system,sans-serif;background-color:#f5f5f5}.containert{max-width:85%;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;margin-bottom:12px;font-weight:700;line-height:1.3;color:white;font-family:"Noto Sans",sans-serif}.header-t p{color:rgba(255,255,255,0.9);font-size:1rem;max-width:700px;margin:0 auto;font-family:"Noto Sans",sans-serif}.main-content{padding:32px}.upload-section{text-align:center;padding:60px 48px;border:2px dashed var(--border);border-radius:16px;background-color:var(--bg-light);transition:all .3s ease;margin-bottom:24px;cursor:pointer}.upload-section:hover{border-color:var(--primary);background-color:rgba(79,70,229,0.05);transform:translateY(-2px)}.upload-section.drag-over{border-color:var(--primary);background-color:rgba(79,70,229,0.1);transform:scale(1.01)}.upload-icon{font-size:64px;color:var(--primary);margin-bottom:20px}.upload-text{font-size:1.35rem;color:var(--text);margin-bottom:12px;font-weight:600}.upload-hint{font-size:.95rem;color:var(--text-light);margin-bottom:28px}.btn-upload{display:inline-flex;align-items:center;justify-content:center;padding:14px 32px;border-radius:10px;font-weight:600;cursor:pointer;transition:all .2s ease;background-color:var(--primary);color:white;border:0;outline:0;font-size:1rem;gap:10px}.btn-upload:hover{background-color:var(--primary-hover);transform:translateY(-1px);box-shadow:0 4px 12px rgba(79,70,229,0.3)}#pdfUpload{display:none}.file-info{display:none;background:white;border-radius:12px;padding:16px 20px;margin-bottom:24px;border:1px solid var(--border);align-items:center;gap:16px;box-shadow:var(--card-shadow)}.file-icon{font-size:2rem;color:var(--danger)}.file-details{flex:1}.file-name{font-weight:600;margin-bottom:4px;word-break:break-all;color:var(--text)}.file-size{color:var(--text-light);font-size:.85rem;margin-top:2px}.file-pages{color:var(--primary);font-size:.8rem;margin-top:4px}.file-remove{background:0;border:0;color:var(--text-light);cursor:pointer;font-size:1.2rem;padding:8px;transition:all .2s ease;border-radius:8px}.file-remove:hover{color:var(--error);background-color:rgba(239,68,68,0.1);transform:scale(1.1)}.conversion-section{display:none;background:white;border-radius:16px;padding:24px;margin-bottom:24px;border:1px solid var(--border);box-shadow:var(--card-shadow)}.progress-container{width:100%;background-color:var(--border);border-radius:8px;margin:20px 0;display:none;overflow:hidden}.progress-bar{height:10px;border-radius:8px;background:linear-gradient(90deg,var(--primary) 0,var(--success) 100%);width:0;transition:width .3s ease}.progress-text{text-align:center;margin-top:8px;font-size:.85rem;color:var(--text-light)}.message{display:none;padding:16px 20px;border-radius:12px;margin-bottom:24px;text-align:center;font-weight:500;animation:fadeIn .3s ease}.message-success{background-color:#e6f7ee;color:var(--success);border-left:4px solid var(--success);display:flex;align-items:center;justify-content:center;gap:10px}.message-success i{font-size:1.2rem}.message-error{background-color:#fee2e2;color:var(--error);border-left:4px solid var(--error)}.action-buttons{display:flex;justify-content:center;gap:16px;margin-top:24px;flex-wrap:wrap}.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{background-color:var(--primary-hover);transform:translateY(-1px);box-shadow:0 4px 12px rgba(79,70,229,0.3)}.btn-secondary{background-color:var(--secondary);color:white}.btn-secondary:hover{background-color:var(--secondary-hover);transform:translateY(-1px);box-shadow:0 4px 12px rgba(107,114,128,0.3)}.btn-success{background-color:var(--success);color:white}.btn-success:hover{background-color:var(--success-hover);transform:translateY(-1px);box-shadow:0 4px 12px rgba(16,185,129,0.3)}.btn:active{transform:translateY(0)}.loading-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:rgba(0,0,0,0.7);z-index:9999;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:16px}.loading-spinner{width:50px;height:50px;border:4px solid rgba(255,255,255,0.3);border-top-color:white;border-radius:50%;animation:spin 1s linear infinite}.loading-text{color:white;font-size:1rem;font-weight:500}.toast{position:fixed;bottom:30px;right:30px;padding:16px 24px;border-radius:12px;display:flex;align-items:center;gap:12px;z-index:10000;box-shadow:0 4px 20px rgba(0,0,0,0.15);animation:slideIn .3s ease forwards;max-width:400px;transform:translateX(100%);opacity:0}.toast.show{transform:translateX(0);opacity:1}.toast.success{background:linear-gradient(135deg,var(--success) 0,var(--success-hover) 100%);color:white}.toast.error{background:linear-gradient(135deg,var(--error) 0,var(--error-hover) 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}@keyframes spin{0{transform:rotate(0)}100%{transform:rotate(360deg)}}@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes slideIn{from{transform:translateX(100%);opacity:0}to{transform:translateX(0);opacity:1}}.how-to-section-wrapper{max-width:1200px;margin:60px auto;padding:0 20px}.how-to-section-wrapper h2{font-family:'Space Grotesk',sans-serif;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-family:'Space Grotesk',sans-serif;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;border-bottom:2px solid var(--border);padding-bottom:10px}.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:1.5em;line-height:1.7;color:#555;font-size:1rem}.content-wrapper ul{list-style:none;padding-left:0;margin-bottom:2em}.content-wrapper ul li{position:relative;padding-left:28px;margin-bottom:15px;font-size:1rem;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:underline;font-weight:500;transition:color .2s ease}.content-wrapper a:hover{color:var(--primary-hover)}@media(max-width:1024px){.containert{max-width:95%;margin:80px auto}}@media(max-width:768px){.containert{max-width:100%;margin:60px 16px;border-radius:12px}.header-t{padding:24px 20px}.header-t h1{font-size:1.5rem}.main-content{padding:20px}.upload-section{padding:40px 24px}.upload-icon{font-size:48px}.upload-text{font-size:1.1rem}.upload-hint{font-size:.85rem}.btn-upload,.btn{padding:12px 24px;font-size:.9rem}.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:24px}.content-wrapper h2{font-size:1.5rem}.content-wrapper h3{font-size:1.2rem}.toast{left:20px;right:20px;bottom:20px;max-width:calc(100% - 40px)}}@media(max-width:480px){.header-t h1{font-size:1.3rem}.main-content{padding:16px}.upload-section{padding:32px 16px}.upload-icon{font-size:40px}.upload-text{font-size:1rem}.btn-upload,.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:20px}}.text-center{text-align:center}.mt-20{margin-top:20px}.mb-20{margin-bottom:20px}.hidden{display:none}