:root{--primary:#6c5ce7;--primary-dark:#5a4bd1;--secondary:#00cec9;--accent:#fd79a8;--dark:#0a0a1a;--dark-2:#12122a;--dark-3:#1a1a3e;--text:#e0e0e0;--text-muted:#8888aa;--white:#fff;--success:#00b894;--error:#e74c3c;--gradient:linear-gradient(135deg,var(--primary),var(--secondary));--gradient-2:linear-gradient(135deg,var(--accent),var(--primary));--shadow:0 10px 40px rgba(108,92,231,.15);--shadow-lg:0 20px 60px rgba(0,0,0,.3);--radius:16px;--radius-sm:10px;--transition:all .3s cubic-bezier(.4,0,.2,1)}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{font-family:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;background:var(--dark);color:var(--text);line-height:1.6;overflow-x:hidden}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.particles{position:fixed;top:0;left:0;width:100%;height:100%;z-index:0;pointer-events:none;overflow:hidden}
.particle{position:absolute;border-radius:50%;background:rgba(108,92,231,.15);animation:float linear infinite}
@keyframes float{0%{transform:translateY(100vh) rotate(0);opacity:0}10%{opacity:1}90%{opacity:1}100%{transform:translateY(-100px) rotate(720deg);opacity:0}}
.header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(10,10,26,.85);backdrop-filter:blur(20px);border-bottom:1px solid rgba(108,92,231,.1);transition:var(--transition)}
.header.scrolled{background:rgba(10,10,26,.95);box-shadow:0 4px 30px rgba(0,0,0,.3)}
.nav{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none}
.logo-icon{width:42px;height:42px;display:flex;align-items:center;justify-content:center;background:var(--gradient);border-radius:12px;color:#fff;font-size:18px}
.logo-text{font-size:24px;font-weight:800;color:#fff}
.highlight{color:var(--primary)}
.nav-links{display:flex;list-style:none;gap:30px}
.nav-links a{color:var(--text-muted);text-decoration:none;font-weight:500;font-size:15px;transition:var(--transition);position:relative}
.nav-links a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--gradient);border-radius:2px;transition:var(--transition)}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after{width:100%}
.mobile-menu-btn{display:none;background:none;border:none;color:#fff;font-size:24px;cursor:pointer}

.hero{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:120px 0 60px;position:relative;z-index:1;background:radial-gradient(ellipse at 50% 0%,rgba(108,92,231,.12) 0%,transparent 60%)}
.hero-content{text-align:center;max-width:800px;margin:0 auto}
.hero-title{font-size:clamp(2rem,5vw,3.5rem);font-weight:900;color:#fff;margin-bottom:20px;line-height:1.2}
.typed-text{color:var(--primary)}
.cursor{color:var(--primary);animation:blink 1s infinite;font-weight:300}
@keyframes blink{0%,100%{opacity:1}50%{opacity:0}}
.hero-subtitle{font-size:1.1rem;color:var(--text-muted);margin-bottom:40px;max-width:600px;margin-left:auto;margin-right:auto}
.download-box{display:flex;gap:12px;max-width:700px;margin:0 auto 30px;background:var(--dark-3);border-radius:var(--radius);padding:8px;border:1px solid rgba(108,92,231,.2);box-shadow:var(--shadow-lg)}
.input-wrapper{flex:1;display:flex;align-items:center;gap:12px;background:var(--dark-2);border-radius:var(--radius-sm);padding:0 16px;border:1px solid rgba(255,255,255,.05)}
.platform-icon{width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:10px;background:var(--gradient);color:#fff;font-size:14px;flex-shrink:0;transition:var(--transition)}
.url-input{flex:1;background:none;border:none;outline:none;color:#fff;font-size:16px;font-family:inherit;padding:14px 0}
.url-input::placeholder{color:var(--text-muted)}
.clear-btn{background:none;border:none;color:var(--text-muted);cursor:pointer;font-size:14px;padding:6px;border-radius:50%;transition:var(--transition);display:none}
.clear-btn.show{display:block}
.clear-btn:hover{color:var(--error);background:rgba(231,76,60,.1)}
.download-btn{background:var(--gradient);border:none;color:#fff;font-family:inherit;font-size:16px;font-weight:700;padding:14px 32px;border-radius:var(--radius-sm);cursor:pointer;transition:var(--transition);white-space:nowrap;position:relative;overflow:hidden}
.download-btn:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(108,92,231,.4)}
.btn-loader{display:none}
.download-btn.loading .btn-text{display:none}
.download-btn.loading .btn-loader{display:inline-flex;align-items:center;gap:8px}
.quick-platforms{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:8px;margin-bottom:20px}
.quick-label{color:var(--text-muted);font-size:14px;font-weight:500;margin-right:4px}
.quick-link{display:inline-flex;align-items:center;gap:5px;padding:6px 14px;background:var(--dark-3);border-radius:20px;color:var(--text-muted);text-decoration:none;font-size:13px;font-weight:500;border:1px solid rgba(255,255,255,.05);transition:var(--transition)}
.quick-link:hover{color:#fff;border-color:var(--primary);background:rgba(108,92,231,.1)}

.result-area{max-width:700px;margin:0 auto}
.result-card{background:var(--dark-3);border-radius:var(--radius);padding:24px;border:1px solid rgba(108,92,231,.2);margin-top:20px;animation:slideUp .4s ease}
@keyframes slideUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
.result-thumb{width:100%;border-radius:var(--radius-sm);margin-bottom:16px;max-height:300px;object-fit:cover}
.result-info{margin-bottom:16px}
.result-title{font-size:18px;font-weight:700;color:#fff;margin-bottom:6px}
.result-duration{font-size:14px;color:var(--text-muted)}
.result-platform{display:inline-block;padding:4px 12px;background:var(--gradient);border-radius:20px;font-size:12px;color:#fff;font-weight:600;margin-bottom:12px}
.download-options{display:flex;flex-direction:column;gap:8px}
.dl-option{display:flex;align-items:center;justify-content:space-between;background:var(--dark-2);padding:12px 16px;border-radius:var(--radius-sm);border:1px solid rgba(255,255,255,.05);transition:var(--transition)}
.dl-option:hover{border-color:var(--primary);background:rgba(108,92,231,.05)}
.dl-quality{font-weight:600;color:#fff;font-size:14px}
.dl-format{color:var(--text-muted);font-size:13px}
.dl-btn{background:var(--gradient);border:none;color:#fff;padding:8px 20px;border-radius:8px;font-size:13px;font-weight:600;cursor:pointer;text-decoration:none;transition:var(--transition);display:inline-flex;align-items:center;gap:6px}
.dl-btn:hover{transform:scale(1.05);box-shadow:0 4px 15px rgba(108,92,231,.3)}
.dl-btn.audio-btn{background:var(--gradient-2)}
.error-area{max-width:700px;margin:0 auto}
.error-box{display:flex;align-items:center;gap:12px;padding:16px 20px;background:rgba(231,76,60,.1);border:1px solid rgba(231,76,60,.3);border-radius:var(--radius-sm);color:var(--error);margin-top:20px;animation:slideUp .4s ease}
.error-box i{font-size:20px}
.error-box p{font-size:14px}
.how-it-works{padding:80px 0;position:relative;z-index:1}
.section-title{text-align:center;font-size:clamp(1.8rem,4vw,2.5rem);font-weight:800;color:#fff;margin-bottom:10px}
.section-subtitle{text-align:center;color:var(--text-muted);font-size:1.05rem;margin-bottom:50px}
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.step-card{text-align:center;padding:40px 30px;background:var(--dark-3);border-radius:var(--radius);border:1px solid rgba(255,255,255,.05);position:relative;transition:var(--transition)}
.step-card:hover{transform:translateY(-5px);border-color:var(--primary);box-shadow:var(--shadow)}
.step-number{position:absolute;top:-15px;left:50%;transform:translateX(-50%);width:36px;height:36px;background:var(--gradient);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:16px}
.step-icon{font-size:48px;color:var(--primary);margin-bottom:20px}
.step-card h3{color:#fff;margin-bottom:10px;font-size:1.2rem}
.step-card p{color:var(--text-muted);font-size:.95rem}

.platforms-section{padding:80px 0;position:relative;z-index:1;background:var(--dark-2)}
.platforms-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:20px}
.platform-card{text-align:center;padding:30px 16px;background:var(--dark-3);border-radius:var(--radius);border:1px solid rgba(255,255,255,.05);transition:var(--transition);cursor:pointer}
.platform-card:hover{transform:translateY(-5px);border-color:var(--primary);box-shadow:var(--shadow)}
.platform-logo{width:60px;height:60px;margin:0 auto 15px;display:flex;align-items:center;justify-content:center;border-radius:16px;font-size:28px}
.platform-logo.youtube{background:rgba(255,0,0,.1);color:#ff0000}
.platform-logo.instagram{background:rgba(225,48,108,.1);color:#e1306c}
.platform-logo.facebook{background:rgba(24,119,242,.1);color:#1877f2}
.platform-logo.twitter{background:rgba(29,161,242,.1);color:#1da1f2}
.platform-logo.tiktok{background:rgba(255,0,80,.1);color:#ff0050}
.platform-logo.vimeo{background:rgba(26,183,234,.1);color:#1ab7ea}
.platform-logo.reddit{background:rgba(255,69,0,.1);color:#ff4500}
.platform-logo.pinterest{background:rgba(230,0,35,.1);color:#e60023}
.platform-logo.twitch{background:rgba(100,65,164,.1);color:#6441a4}
.platform-logo.dailymotion{background:rgba(0,97,204,.1);color:#0061cc}
.platform-logo.soundcloud{background:rgba(255,85,0,.1);color:#ff5500}
.platform-logo.more{background:rgba(108,92,231,.1);color:var(--primary)}
.platform-card h4{color:#fff;font-size:16px;margin-bottom:4px}
.platform-card p{color:var(--text-muted);font-size:13px}
.features-section{padding:80px 0;position:relative;z-index:1}
.features-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.feature-card{padding:32px;background:var(--dark-3);border-radius:var(--radius);border:1px solid rgba(255,255,255,.05);transition:var(--transition)}
.feature-card:hover{transform:translateY(-5px);border-color:var(--primary);box-shadow:var(--shadow)}
.feature-icon{width:56px;height:56px;display:flex;align-items:center;justify-content:center;background:var(--gradient);border-radius:14px;color:#fff;font-size:22px;margin-bottom:20px}
.feature-card h3{color:#fff;font-size:1.15rem;margin-bottom:8px}
.feature-card p{color:var(--text-muted);font-size:.9rem}
.faq-section{padding:80px 0;position:relative;z-index:1;background:var(--dark-2)}
.faq-list{max-width:700px;margin:0 auto}
.faq-item{margin-bottom:12px}
.faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;padding:18px 22px;background:var(--dark-3);border-radius:var(--radius-sm);border:1px solid rgba(255,255,255,.05);color:#fff;font-family:inherit;font-size:15px;font-weight:600;cursor:pointer;transition:var(--transition)}
.faq-question:hover{border-color:var(--primary)}
.faq-question i{transition:transform .3s;color:var(--primary)}
.faq-item.active .faq-question{border-color:var(--primary);border-radius:var(--radius-sm) var(--radius-sm) 0 0}
.faq-item.active .faq-question i{transform:rotate(180deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .3s ease,padding .3s ease;background:var(--dark-3);border-radius:0 0 var(--radius-sm) var(--radius-sm);border:1px solid transparent;padding:0 22px}
.faq-item.active .faq-answer{max-height:200px;padding:18px 22px;border-color:rgba(108,92,231,.2);border-top:none}
.faq-answer p{color:var(--text-muted);font-size:14px;line-height:1.7}

.footer{padding:60px 0 30px;background:var(--dark-2);border-top:1px solid rgba(255,255,255,.05);position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-logo{margin-bottom:15px;display:inline-flex;align-items:center;gap:10px;text-decoration:none}
.footer-desc{color:var(--text-muted);font-size:14px;line-height:1.7}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:18px}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:10px}
.footer-col a{color:var(--text-muted);text-decoration:none;font-size:14px;transition:var(--transition)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{text-align:center;padding-top:30px;border-top:1px solid rgba(255,255,255,.05)}
.footer-bottom p{color:var(--text-muted);font-size:14px}
.disclaimer{font-size:12px!important;margin-top:8px;opacity:.6}
.back-to-top{position:fixed;bottom:30px;right:30px;width:50px;height:50px;background:var(--gradient);border:none;border-radius:50%;color:#fff;font-size:18px;cursor:pointer;z-index:999;opacity:0;visibility:hidden;transition:var(--transition);box-shadow:0 4px 15px rgba(108,92,231,.3)}
.back-to-top.show{opacity:1;visibility:visible}
.back-to-top:hover{transform:translateY(-3px)}
@media(max-width:768px){.nav-links{display:none;position:absolute;top:70px;left:0;width:100%;background:var(--dark-2);flex-direction:column;padding:20px;gap:15px;border-bottom:1px solid rgba(108,92,231,.1)}.nav-links.active{display:flex}.mobile-menu-btn{display:block}.download-box{flex-direction:column}.steps-grid{grid-template-columns:1fr}.platforms-grid{grid-template-columns:repeat(2,1fr)}.features-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr;gap:30px}}
@media(max-width:480px){.hero-title{font-size:1.8rem}.quick-platforms{gap:6px}.quick-link{font-size:12px;padding:5px 10px}.footer-grid{grid-template-columns:1fr}}