@keyframes wave{0%,40%,to{transform:translateY(0)}20%{transform:translateY(-15px)}}@keyframes pasteHighlight{0%{background:rgba(24,119,242,.2);border-color:var(--primary-color);transform:scale(1.02)}to{background:rgba(24,119,242,.05);border-color:var(--primary-color);transform:scale(1)}}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(360deg)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}:root{--primary-color:#1877f2;--primary-dark:#166fe5;--primary-light:#4267B2;--secondary-color:#ffffff;--bg-color:#0f0f0f;--bg-secondary:#1a1a1a;--text-color:#ffffff;--text-light:#a8a8a8;--text-secondary:#666666;--card-bg:#161616;--border-color:#2a2a2a;--shadow-sm:0 2px 12px rgba(0, 0, 0, 0.4);--shadow-md:0 4px 20px rgba(0, 0, 0, 0.5);--shadow-lg:0 8px 40px rgba(0, 0, 0, 0.6);--gradient-primary:linear-gradient(135deg, #1877f2 0%, #4267B2 100%);--gradient-secondary:linear-gradient(135deg, #ffffff 0%, #ffffff 100%)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;background:var(--bg-color);color:var(--text-color);line-height:1.6;min-height:100vh;overflow-x:hidden}body::before{content:"";position:fixed;top:0;left:0;right:0;height:400px;background:radial-gradient(ellipse at top,rgba(24,119,242,.15),transparent 70%);pointer-events:none;z-index:0}.loading-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:var(--bg-color);display:flex;justify-content:center;align-items:center;z-index:9999;transition:opacity .5s ease,visibility .5s ease}.loading-content{text-align:center}.loading-icon{position:relative;width:100px;height:100px;margin:0 auto}.loading-icon div{position:absolute;top:0;left:0;width:100%;height:100%;border-radius:50%;border:10px solid transparent;border-top-color:var(--primary-color);animation:spin 1.5s linear infinite}.loading-icon div:nth-child(2){border:10px solid transparent;border-bottom-color:var(--secondary-color);animation:spin 2s linear infinite}.loader-wave{display:flex;justify-content:center;align-items:center;height:50px;margin-top:20px}.loader-wave span{display:inline-block;width:10px;height:10px;margin:0 5px;border-radius:50%;background-color:var(--primary-color);animation:wave 1.5s infinite ease-in-out}.loader-wave span:nth-child(2){animation-delay:.2s;background-color:var(--primary-light)}.loader-wave span:nth-child(3){animation-delay:.4s;background-color:var(--secondary-color)}.loader-wave span:nth-child(4){animation-delay:.6s;background-color:var(--primary-light)}.loader-wave span:nth-child(5){animation-delay:.8s;background-color:var(--primary-color)}.header{background:rgba(22,22,22,.95);border-bottom:1px solid var(--border-color);color:#fff;padding:20px 0;position:sticky;top:0;z-index:1000;box-shadow:0 4px 30px rgba(0,0,0,.3)}.header-content{max-width:1200px;margin:0 auto;padding:0 24px}.header h1,.header h1 i{background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.header h1{font-size:28px;font-weight:800;margin:0;display:flex;align-items:center;gap:12px}.header h1 i{font-size:32px}.header p{font-size:14px;margin:6px 0 0;color:var(--text-light);font-weight:500}.header-nav{position:absolute;top:18px;right:24px;z-index:100}.hamburger-menu,.nav-menu{transition:all .3s cubic-bezier(.4,0,.2,1)}.hamburger-menu{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);color:#fff;font-size:1.1rem;cursor:pointer;padding:10px 12px;border-radius:10px}.hamburger-menu:hover{background:rgba(24,119,242,.2);border-color:var(--primary-color);transform:translateY(-2px)}.nav-menu{position:absolute;top:55px;right:0;background:var(--card-bg);border:1px solid var(--border-color);border-radius:12px;box-shadow:var(--shadow-lg);padding:6px 0;min-width:180px;display:none;opacity:0;transform:translateY(-10px)}.nav-menu.show{display:block;opacity:1;transform:translateY(0)}#facebook-url,.nav-menu a{color:var(--text-color);font-weight:500}.nav-menu a{display:flex;align-items:center;padding:12px 18px;text-decoration:none;transition:all .3s ease;font-size:14px}.nav-menu a:hover{padding-left:22px}.nav-menu a i{margin-right:10px;width:18px}.container{max-width:1200px;margin:0 auto;padding:0 24px 80px;position:relative;z-index:1}.download-section{background:var(--card-bg);border:1px solid var(--border-color);padding:40px;border-radius:24px;box-shadow:var(--shadow-md);margin:40px 0;position:relative;overflow:hidden}.download-section::before{content:"";position:absolute;top:-50%;right:-20%;width:300px;height:300px;background:radial-gradient(circle,rgba(24,119,242,.1),transparent 70%);pointer-events:none}.input-container{max-width:800px;margin:0 auto;position:relative}.search-box{display:flex;gap:12px;margin-bottom:16px}.search-input-wrapper{flex:1;position:relative;display:flex;align-items:center}.input-icon{position:absolute;right:8px;color:var(--text-light);font-size:18px;background:0 0;border:0;cursor:pointer;padding:10px;transition:all .3s ease;border-radius:8px;z-index:10}.input-icon:hover,.nav-menu a:hover{color:var(--primary-color);background:rgba(24,119,242,.1)}#facebook-url{width:100%;padding:18px 50px 18px 20px;border:2px solid var(--border-color);border-radius:16px;font-size:15px;outline:0;transition:all .3s cubic-bezier(.4,0,.2,1);background:var(--bg-secondary)}#facebook-url::placeholder{color:var(--text-secondary)}#facebook-url:focus{border-color:var(--primary-color);background:rgba(24,119,242,.05);box-shadow:0 0 0 4px rgba(24,119,242,.1)}#facebook-url.paste-effect{animation:pasteHighlight .8s ease}.download-btn{padding:18px 36px;background:var(--gradient-primary);color:#fff;border:0;border-radius:16px;font-size:15px;font-weight:700;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex;align-items:center;gap:10px;box-shadow:0 4px 20px rgba(24,119,242,.3);white-space:nowrap}.download-btn:hover{transform:translateY(-3px);box-shadow:0 6px 30px rgba(24,119,242,.4)}.download-btn:active{transform:translateY(-1px)}.loader{display:none;text-align:center;padding:100px 20px}.loader.active{display:block;animation:fadeIn .4s ease}.loader-spinner{border:4px solid var(--border-color);border-top:4px solid var(--primary-color);border-radius:50%;width:60px;height:60px;animation:spin 1s linear infinite;margin:0 auto 24px}.loader p{color:var(--text-light);font-size:15px;font-weight:600}.error-message{background:var(--card-bg);border:2px solid rgba(24,119,242,.3);border-radius:20px;padding:60px 30px;text-align:center;margin:40px 0;display:none;box-shadow:var(--shadow-md)}.error-message.active{display:block;animation:slideUp .4s ease}.error-message h3,.error-message i{font-size:64px;color:var(--primary-color);margin-bottom:20px}.error-message h3{font-size:26px;margin-bottom:12px;font-weight:700}.error-message p,.no-result-content p{color:var(--text-light);font-size:16px}.no-result-container{display:none;padding:40px 20px;margin:40px 0;animation:slideUp .5s ease}.no-result-content{background:var(--card-bg);border:1px solid var(--border-color);border-radius:24px;padding:70px 40px;text-align:center;box-shadow:var(--shadow-md)}.no-result-icon,.try-again-btn{background:var(--gradient-primary);align-items:center}.no-result-icon{width:100px;height:100px;margin:0 auto 28px;border-radius:50%;display:flex;justify-content:center;box-shadow:0 8px 30px rgba(24,119,242,.3)}.no-result-icon i{font-size:48px;color:#fff}.no-result-content h3{font-size:30px;color:var(--text-color);margin-bottom:14px;font-weight:800}.no-result-content p{margin-bottom:32px;line-height:1.6}.try-again-btn{color:#fff;border:0;padding:16px 36px;border-radius:16px;font-size:15px;font-weight:700;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);display:inline-flex;gap:10px;box-shadow:0 4px 20px rgba(24,119,242,.3)}.try-again-btn:hover{transform:translateY(-3px);box-shadow:0 6px 30px rgba(24,119,242,.4)}.try-again-btn:active{transform:translateY(-1px)}.download-action-btn i,.try-again-btn i{font-size:16px}.result-container,.video-preview{overflow:hidden;box-shadow:var(--shadow-md)}.result-container{background:var(--card-bg);border:1px solid var(--border-color);border-radius:24px;margin-bottom:40px;animation:slideUp .5s ease}.video-preview{position:relative;border-radius:20px;margin:32px auto;max-width:600px;width:100%}.video-preview img{width:100%;height:auto;display:block}.result-content{padding:32px}.download-options h3{font-size:22px;margin-bottom:24px;display:flex;align-items:center;gap:12px;font-weight:700}.download-options h3 i{color:var(--primary-color)}.options-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px}.option-card{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:18px;padding:24px;transition:all .3s cubic-bezier(.4,0,.2,1);cursor:pointer}.option-card:hover{border-color:var(--primary-color);transform:translateY(-6px);box-shadow:0 8px 30px rgba(24,119,242,.2)}.option-header{gap:14px;margin-bottom:16px}.option-action,.option-header,.option-icon{display:flex;align-items:center}.option-icon{width:52px;height:52px;border-radius:14px;background:var(--gradient-primary);justify-content:center;color:#fff;font-size:24px;box-shadow:0 4px 15px rgba(24,119,242,.3)}.option-details h4{font-size:17px;margin-bottom:5px;font-weight:700}.option-details p{font-size:13px;color:var(--text-light)}.option-action{justify-content:space-between;margin-top:18px;padding-top:18px;border-top:1px solid var(--border-color)}.quality-badge{color:#fff;padding:6px 14px;border-radius:20px;font-size:12px;font-weight:700;box-shadow:0 2px 10px rgba(24,119,242,.3)}.quality-badge.sd{background:linear-gradient(135deg,#6b7280,#4b5563)}.download-action-btn,.quality-badge,.quality-badge.hd{background:var(--gradient-primary)}.download-action-btn{color:#fff;border:0;padding:11px 22px;border-radius:12px;font-size:14px;font-weight:700;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex;align-items:center;gap:8px}.download-action-btn:hover{transform:translateX(5px);box-shadow:0 4px 15px rgba(24,119,242,.3)}.download-another-container{text-align:center;margin-top:28px;padding-top:28px;border-top:1px solid var(--border-color)}.download-another-btn{background:var(--gradient-primary);color:#fff;border:0;padding:16px 36px;border-radius:16px;font-size:15px;font-weight:700;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);display:inline-flex;align-items:center;gap:10px;box-shadow:0 4px 20px rgba(24,119,242,.3)}.download-another-btn:hover{transform:translateY(-3px);box-shadow:0 6px 30px rgba(24,119,242,.4)}.download-another-btn i{font-size:18px}.features-section{background:var(--card-bg);border:1px solid var(--border-color);padding:60px 40px;border-radius:24px;box-shadow:var(--shadow-md);margin-bottom:40px}.feature-card i,.features-section h2,.how-to-section h2{background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.features-section h2,.how-to-section h2{text-align:center;font-size:32px;margin-bottom:48px;font-weight:800}.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.feature-card,.how-to-section{border:1px solid var(--border-color)}.feature-card{text-align:center;padding:36px 24px;border-radius:18px;transition:opacity .6s ease,transform .6s ease;background:var(--bg-secondary);opacity:0;transform:translateY(30px)}.feature-card.visible{opacity:1;transform:translateY(0)}.feature-card:hover{background:rgba(24,119,242,.05);border-color:var(--primary-color);transform:translateY(-6px);box-shadow:0 8px 30px rgba(24,119,242,.15)}.feature-card i{font-size:52px;margin-bottom:18px}.feature-card h3,.step-card h3{font-size:19px;margin-bottom:10px;font-weight:700}.feature-card p{font-size:14px;line-height:1.6}.how-to-section{background:var(--card-bg);padding:60px 40px;border-radius:24px;box-shadow:var(--shadow-md)}.steps-container{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}.step-card{text-align:center;padding:36px 28px;border-radius:18px;background:var(--bg-secondary);border:1px solid var(--border-color);transition:opacity .6s ease,transform .6s ease;opacity:0;transform:translateY(30px)}.step-card.visible{opacity:1;transform:translateY(0)}.step-card:hover{background:rgba(24,119,242,.05);border-color:var(--primary-color);transform:translateY(-6px);box-shadow:0 8px 30px rgba(24,119,242,.15)}.step-number{width:70px;height:70px;margin:0 auto 24px;background:var(--gradient-primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:32px;font-weight:800;box-shadow:0 6px 25px rgba(24,119,242,.4)}.step-card h3{font-size:21px;margin-bottom:14px}.feature-card p,.step-card p,footer{color:var(--text-light)}.step-card p{font-size:14px;line-height:1.7}footer{background:var(--bg-secondary);border-top:1px solid var(--border-color);padding:40px 0;text-align:center}.footer-content p{font-size:14px;margin-bottom:8px}@media (max-width:1024px){.features-grid,.steps-container{grid-template-columns:repeat(2,1fr);gap:24px}}@media (max-width:768px){.header{padding:18px 0}.header h1{font-size:24px}.header h1 i{font-size:28px}.header p{font-size:13px}.header-nav{top:16px;right:20px}.download-section{padding:32px 24px;margin:30px 0}.search-box{flex-direction:column}.download-btn{width:100%;justify-content:center;padding:16px 32px}#facebook-url{padding:16px 45px 16px 18px;font-size:15px}.options-grid{grid-template-columns:1fr}.features-section,.how-to-section{padding:48px 28px}.features-section h2,.how-to-section h2{font-size:28px;margin-bottom:40px}.features-grid,.steps-container{grid-template-columns:1fr;gap:20px}.result-content{padding:24px}}@media (max-width:480px){.container{padding:0 16px 60px}.header h1{font-size:20px}.features-section h2,.header h1 i,.how-to-section h2{font-size:24px}.header p{font-size:12px}.download-section{padding:28px 20px;border-radius:20px}#facebook-url,.download-btn{padding:14px 40px 14px 16px;font-size:14px}.download-btn{padding:14px 28px}.features-section,.how-to-section{padding:40px 20px}.feature-card,.step-card{padding:28px 20px}.step-number{width:60px;height:60px;font-size:28px}.video-preview{max-width:100%}}