:root{--bg:#f0f2f5;--card:#ffffff;--primary:#2563eb;--text:#1f2937;--border:#e5e7eb}*{margin:0;padding:0;box-sizing:border-box}body{background-color:var(--bg);color:var(--text);font-family:'Inter',sans-serif;display:flex;justify-content:center;align-items:center;min-height:100vh}.converter-card{background:var(--card);padding:3rem;border-radius:24px;width:100%;max-width:450px;box-shadow:0 10px 25px -5px rgba(0,0,0,0.05)}header{text-align:center;margin-bottom:3rem}.logo{font-size:1.5rem;font-weight:800}.logo span{color:var(--primary)}.category-tabs{display:flex;gap:0.5rem;overflow-x:auto;padding:0.2rem 0;margin-bottom:2.2rem;scrollbar-width:none}.category-tabs::-webkit-scrollbar{display:none}.cat-tab{background:#f3f4f6;border:none;color:#4b5563;padding:0.5rem 1rem;border-radius:50px;font-size:0.8rem;font-weight:700;cursor:pointer;white-space:nowrap;transition:all 0.2s ease}.cat-tab:hover{background:#e5e7eb}.cat-tab.active{background:#1f2937;color:#ffffff}.input-group{display:flex;flex-direction:column;gap:1rem}input{background:#f9fafb;border:1px solid var(--border);padding:1.2rem;border-radius:12px;font-size:1.5rem;font-weight:700;text-align:center;outline:none;color:var(--text)}select{background:#fff;border:1px solid var(--border);padding:0.8rem;border-radius:12px;font-weight:600;cursor:pointer;outline:none}.divider{text-align:center;margin:2rem 0;position:relative}.divider::before{content:'';position:absolute;top:50%;left:0;width:100%;height:1px;background:var(--border);z-index:1}.divider span{background:#fff;position:relative;z-index:2;padding:0 1rem;font-size:0.7rem;font-weight:800;color:#9ca3af;letter-spacing:2px}.floating-ad-banner{position:fixed;bottom:25px;right:25px;background:rgba(30,41,59,0.9);backdrop-filter:blur(15px);-webkit-backdrop-filter:blur(15px);border:1px solid rgba(255,255,255,0.08);padding:1.25rem 2rem;border-radius:16px;z-index:999;display:flex;align-items:center;justify-content:space-between;gap:3rem;box-shadow:0 10px 30px rgba(0,0,0,0.15);animation:slideUpAd 0.5s cubic-bezier(0.16,1,0.3,1) forwards;transition:opacity 0.4s ease,transform 0.4s ease}@keyframes slideUpAd{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.floating-ad-banner.fade-out{opacity:0;transform:translateY(15px)}.banner-content{display:flex;flex-direction:column;gap:0.3rem;text-align:left}.banner-badge{font-size:0.65rem;color:#2563eb;font-weight:800;letter-spacing:1.5px;text-transform:uppercase}.banner-content p{font-size:0.85rem;color:#e2e8f0;line-height:1.4}.banner-content strong{color:#fff}.banner-actions{display:flex;align-items:center;gap:1.2rem}.btn-banner-action{background:#2563eb;color:#fff;border:none;padding:0.5rem 1.2rem;border-radius:6px;font-size:0.8rem;font-weight:800;text-transform:uppercase;cursor:pointer;transition:all 0.2s ease}.btn-banner-action:hover{transform:scale(1.03);box-shadow:0 0 15px rgba(37,99,235,0.3)}.btn-banner-close{background:none;border:none;color:#94a3b8;font-size:1.4rem;cursor:pointer;transition:color 0.2s ease}.btn-banner-close:hover{color:#ef4444}.modal{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(15,23,42,0.94);backdrop-filter:blur(15px);-webkit-backdrop-filter:blur(15px);z-index:10000;justify-content:center;align-items:center;padding:2rem}.modal-content{background:#fff;width:100%;max-width:900px;max-height:90vh;border-radius:24px;position:relative;padding:4rem;overflow-y:auto;color:#1e293b;box-shadow:0 20px 50px rgba(0,0,0,0.3);border:1px solid rgba(255,255,255,0.1);animation:modalScale 0.3s cubic-bezier(0.16,1,0.3,1) forwards}@keyframes modalScale{from{opacity:0;transform:scale(0.95)}to{opacity:1;transform:scale(1)}}.close-modal{position:absolute;top:2rem;right:2rem;font-size:3rem;cursor:pointer;color:#cbd5e1;transition:color 0.2s ease}.close-modal:hover{color:#0f172a}.ad-tag{font-size:0.75rem;color:#2563eb;font-weight:800;letter-spacing:2px;text-transform:uppercase}.ad-btn{background:#2563eb;color:#fff;border:1px solid #2563eb;padding:0.8rem 1.8rem;border-radius:8px;font-size:0.95rem;font-weight:800;text-transform:uppercase;cursor:pointer;transition:all 0.2s ease}.ad-btn:hover{transform:translateY(-2px);box-shadow:0 5px 15px rgba(37,99,235,0.3)}.btn-secondary{background:transparent;color:#475569;border:1px solid #cbd5e1;padding:0.8rem 1.8rem;border-radius:8px;font-size:0.95rem;font-weight:800;text-transform:uppercase;cursor:pointer;transition:all 0.2s ease}.btn-secondary:hover{background:rgba(0,0,0,0.05);border-color:#1e293b}@keyframes pulse{0%{transform:scale(1)}50%{transform:scale(1.08)}100%{transform:scale(1)}}@media (max-width:768px){.floating-ad-banner{left:20px;right:20px;bottom:20px;flex-direction:column;gap:1.2rem;align-items:stretch;padding:1.2rem}.banner-actions{justify-content:space-between}.ad-sponsor-container{flex-direction:column;text-align:center !important}.modal-content{padding:2rem}}