body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2);background-attachment:fixed;overflow-x:hidden;font-weight:400;line-height:1.6;color:#1f2937}.particles-background{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:0}.particle{position:absolute;width:4px;height:4px;background:#ffffff4d;border-radius:50%;animation:float 6s ease-in-out infinite}.particle:nth-child(1){top:20%;left:20%;animation-delay:0s;animation-duration:6s}.particle:nth-child(2){top:60%;left:80%;animation-delay:1s;animation-duration:8s}.particle:nth-child(3){top:80%;left:40%;animation-delay:2s;animation-duration:7s}.particle:nth-child(4){top:30%;left:70%;animation-delay:3s;animation-duration:9s}.particle:nth-child(5){top:70%;left:10%;animation-delay:4s;animation-duration:5s}.particle:nth-child(6){top:10%;left:60%;animation-delay:5s;animation-duration:6s}.particle:nth-child(7){top:50%;left:30%;animation-delay:1.5s;animation-duration:7s}.particle:nth-child(8){top:90%;left:90%;animation-delay:2.5s;animation-duration:8s}@keyframes float{0%,to{transform:translateY(0) translate(0) scale(1);opacity:.3}25%{transform:translateY(-20px) translate(10px) scale(1.1);opacity:.6}50%{transform:translateY(-10px) translate(-15px) scale(.9);opacity:.4}75%{transform:translateY(-30px) translate(5px) scale(1.2);opacity:.7}}.app{min-height:100vh;display:flex;flex-direction:column;position:relative}.top-navbar{width:100%;height:80px;background:#0000004d;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid rgba(255,255,255,.1);display:flex;justify-content:space-between;align-items:center;padding:0 2rem;position:fixed;top:0;left:0;right:0;z-index:1000}.top-navbar-logo{font-size:1.5rem;font-weight:900;color:#fff;text-shadow:0 2px 10px rgba(0,0,0,.3)}.top-navbar-actions{display:flex;align-items:center}.app-body{display:flex;flex-direction:row;margin-top:80px;min-height:calc(100vh - 80px)}.sidebar{width:240px;background:#0000004d;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-right:1px solid rgba(255,255,255,.1);display:flex;flex-direction:column;padding:2rem 1rem;position:fixed;height:calc(100vh - 80px);left:0;top:80px;z-index:100}.sidebar-nav{flex:1;display:flex;flex-direction:column;gap:.5rem;padding-top:2rem}.nav-item{background:transparent;border:none;color:#fffc;font-size:1rem;font-weight:600;padding:1rem 1.5rem;border-radius:12px;cursor:pointer;transition:all .3s ease;text-align:left}.nav-item:hover{background:#ffffff1a;color:#fff}.nav-item.active{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;box-shadow:0 4px 12px #667eea66}.sidebar-footer{padding-top:1rem;border-top:1px solid rgba(255,255,255,.1)}.sidebar-login{width:100%;padding:.75rem 1.5rem;background:linear-gradient(135deg,#667eea,#764ba2);border:none;border-radius:12px;color:#fff;font-size:.9rem;font-weight:700;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 12px #667eea66}.sidebar-login:hover{background:linear-gradient(135deg,#764ba2,#667eea);transform:translateY(-2px);box-shadow:0 6px 20px #667eea99}.main-content{flex:1;display:flex;flex-direction:column;padding:1rem 2rem;margin-left:240px;overflow-y:auto}.main-title{font-size:2.5rem;font-weight:800;background:linear-gradient(135deg,#fff,#f0f4ff,#e0e7ff);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin:.5rem 0 1.5rem;text-align:center;text-shadow:0 0 40px rgba(255,255,255,.3)}.me-section{padding:2rem}.me-header{display:flex;gap:2rem;padding:2rem;background:#ffffff1a;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-radius:24px;margin-bottom:2rem}.me-avatar{width:100px;height:100px;border-radius:50%;border:4px solid rgba(255,255,255,.3)}.me-info h2{color:#fff;font-size:2rem;margin-bottom:.5rem}.me-info p{color:#fffc;margin-bottom:1rem}.me-stats{display:flex;gap:2rem}.stat-item{display:flex;flex-direction:column;gap:.25rem}.stat-label{color:#ffffffb3;font-size:.9rem}.stat-value{color:#fff;font-size:1.5rem;font-weight:700}.me-content{background:#ffffff1a;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-radius:24px;padding:2rem}.me-content h3{color:#fff;font-size:1.5rem;margin-bottom:1.5rem}.login-prompt{text-align:center;padding:4rem 2rem;color:#fff}.login-prompt h2{font-size:2rem;margin-bottom:2rem}.app:before{content:"";position:fixed;top:0;left:0;width:100%;height:100%;background-image:radial-gradient(circle at 20% 50%,rgba(255,255,255,.1) 0%,transparent 50%),radial-gradient(circle at 80% 80%,rgba(255,255,255,.1) 0%,transparent 50%),radial-gradient(circle at 40% 20%,rgba(255,255,255,.05) 0%,transparent 50%);animation:particleFloat 15s ease-in-out infinite;pointer-events:none;z-index:0}@keyframes particleFloat{0%,to{opacity:1;transform:translateY(0)}50%{opacity:.8;transform:translateY(-20px)}}.header{background:#ffffff1a;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid rgba(255,255,255,.2);padding:2.5rem 2rem;text-align:center;position:relative;z-index:10;box-shadow:0 8px 32px #0000001a}.header-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem}.header-title{font-size:1.5rem;font-weight:900;background:linear-gradient(135deg,#fff,#f0f4ff);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin:0}.site-title{font-size:1.5rem;font-weight:700;color:#fffffff2;margin:0;letter-spacing:.02em}.header-actions{display:flex;align-items:center;gap:1rem}.login-btn,.my-videos-btn,.sign-out-btn{padding:.6rem 1.5rem;background:linear-gradient(135deg,#667eea,#764ba2);border:none;border-radius:12px;color:#fff;font-size:.9rem;font-weight:700;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 12px #667eea66}.login-btn:hover,.my-videos-btn:hover,.sign-out-btn:hover{background:linear-gradient(135deg,#764ba2,#667eea);transform:translateY(-2px);box-shadow:0 6px 20px #667eea99}.login-btn:active{transform:translateY(0)}.user-menu{position:relative}.user-menu-trigger{display:flex;align-items:center;gap:.5rem;background:#ffffff1a;border:1px solid rgba(255,255,255,.2);border-radius:24px;padding:.5rem 1rem;cursor:pointer;transition:all .3s ease}.user-menu-trigger:hover{background:#ffffff26}.user-avatar{width:32px;height:32px;border-radius:50%;border:2px solid rgba(255,255,255,.3)}.user-name{color:#fff;font-size:.9rem;font-weight:600}.dropdown-arrow{color:#fffc;font-size:.7rem;transition:transform .3s ease}.user-dropdown{position:absolute;top:calc(100% + .5rem);right:0;background:#1e1e32fa;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-radius:12px;border:1px solid rgba(255,255,255,.2);padding:.5rem;min-width:150px;box-shadow:0 8px 32px #0000004d;opacity:0;visibility:hidden;transform:translateY(-10px);transition:all .3s ease}.user-dropdown.show{opacity:1;visibility:visible;transform:translateY(0)}.dropdown-item{width:100%;padding:.75rem 1rem;background:transparent;border:none;border-radius:8px;color:#fff;font-size:.9rem;font-weight:600;text-align:left;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;gap:.5rem}.dropdown-item:hover{background:#ffffff1a}.header h1{font-size:3rem;font-weight:800;background:linear-gradient(135deg,#fff,#f0f4ff,#e0e7ff);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:.5rem;text-shadow:0 0 40px rgba(255,255,255,.3);animation:titleGlow 3s ease-in-out infinite;letter-spacing:-.02em;line-height:1.2;text-align:center}@keyframes titleGlow{0%,to{filter:drop-shadow(0 0 20px rgba(255,255,255,.5))}50%{filter:drop-shadow(0 0 30px rgba(255,255,255,.8))}}.main{flex:1;max-width:2000px;margin:0 auto;padding:2rem;width:100%;position:relative;z-index:1}.content-wrapper{display:grid;grid-template-columns:1fr 400px;gap:2rem;align-items:start;max-width:1800px;margin:0 auto;padding:2rem}.templates-section{background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:24px;padding:2rem;box-shadow:0 20px 60px #0000004d,inset 0 1px #fff9;border:1px solid rgba(255,255,255,.3);max-height:calc(100vh - 250px);overflow-y:auto;animation:fadeInLeft .6s ease-out}@keyframes fadeInLeft{0%{opacity:0;transform:translate(-30px)}to{opacity:1;transform:translate(0)}}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem;padding-bottom:1rem;border-bottom:2px solid rgba(102,126,234,.2);gap:1rem}.section-header h2{font-size:1.8rem;font-weight:700;color:#1f2937;margin:0;display:flex;align-items:center;gap:.75rem;flex-shrink:0}.search-container{position:relative;flex:1;max-width:300px}.search-input{width:100%;padding:1rem 2.5rem 1rem 1rem;border:2px solid rgba(102,126,234,.2);border-radius:16px;font-size:1rem;font-family:inherit;font-weight:500;outline:none;transition:all .3s cubic-bezier(.4,0,.2,1);background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);letter-spacing:.01em}.search-input:focus{border-color:#667eea;box-shadow:0 0 0 3px #667eea1a,0 8px 25px #667eea26;transform:translateY(-1px)}.search-input::placeholder{color:#9ca3af}.clear-search{position:absolute;right:1rem;top:50%;transform:translateY(-50%);background:#667eea1a;border:none;width:28px;height:28px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;color:#667eea;font-size:1.2rem;transition:all .3s ease}.clear-search:hover{background:#667eea33;transform:translateY(-50%) scale(1.1)}.search-result-info{padding:.5rem 1rem;background:linear-gradient(135deg,#667eea1a,#764ba21a);border-radius:8px;margin-bottom:1rem;font-size:.9rem;color:#667eea;font-weight:600;text-align:center}.no-results{text-align:center;padding:3rem 1rem;color:#6b7280}.no-results p:first-child{font-size:1.5rem;font-weight:700;margin-bottom:.5rem}.no-results p:last-child{font-size:.95rem;color:#9ca3af}.category-section{margin-bottom:2rem}.category-title{font-size:1.3rem;font-weight:700;color:#374151;margin-bottom:1rem;padding:.5rem 0;border-bottom:2px solid #e5e7eb;position:relative;letter-spacing:-.01em;line-height:1.2}.category-title:before{content:"";position:absolute;bottom:-2px;left:0;width:60px;height:2px;background:linear-gradient(135deg,#667eea,#764ba2)}.loading-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:3rem 1rem;text-align:center}.skeleton-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:1.5rem;margin-bottom:2rem;width:100%}.skeleton-card{height:280px;border-radius:20px;background:#ffffff1a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);overflow:hidden;animation:skeletonPulse 1.5s ease-in-out infinite}.skeleton-video{width:100%;height:100%;background:linear-gradient(90deg,#ffffff1a 25%,#fff3,#ffffff1a 75%);background-size:200% 100%;animation:skeletonShimmer 2s ease-in-out infinite}@keyframes skeletonPulse{0%,to{opacity:.6}50%{opacity:1}}@keyframes skeletonShimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.loading-spinner{width:40px;height:40px;border:4px solid #e5e7eb;border-top:4px solid #667eea;border-radius:50%;animation:spin 1s linear infinite;margin-bottom:1rem}.loading-state p{color:#6b7280;font-size:1rem;margin:0}.progress-bar{width:100%;height:8px;background:#fff3;border-radius:10px;overflow:hidden;margin:1rem 0;position:relative}.progress-fill{height:100%;background:linear-gradient(90deg,#667eea,#764ba2);border-radius:10px;transition:width .3s ease;position:relative;overflow:hidden}.progress-fill:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.4),transparent);animation:progressShine 2s ease-in-out infinite}@keyframes progressShine{0%{transform:translate(-100%)}to{transform:translate(100%)}}.celebration-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#0000004d;display:flex;align-items:center;justify-content:center;z-index:9999;animation:fadeIn .5s ease-out}.confetti{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none}.confetti-piece{position:absolute;width:10px;height:10px;background:#ff6b6b;animation:confettiFall 3s ease-out infinite}.confetti-piece:nth-child(1){left:10%;animation-delay:0s;background:#ff6b6b}.confetti-piece:nth-child(2){left:20%;animation-delay:.2s;background:#4ecdc4}.confetti-piece:nth-child(3){left:30%;animation-delay:.4s;background:#45b7d1}.confetti-piece:nth-child(4){left:40%;animation-delay:.6s;background:#f9ca24}.confetti-piece:nth-child(5){left:50%;animation-delay:.8s;background:#6c5ce7}.confetti-piece:nth-child(6){left:60%;animation-delay:1s;background:#a29bfe}.confetti-piece:nth-child(7){left:70%;animation-delay:1.2s;background:#fd79a8}.confetti-piece:nth-child(8){left:80%;animation-delay:1.4s;background:#00b894}.success-message{text-align:center;color:#fff;z-index:10000}.success-message h2{font-size:3rem;margin-bottom:1rem;animation:bounceIn .8s ease-out}.success-message p{font-size:1.5rem;animation:slideUp .8s ease-out .3s both}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes confettiFall{0%{transform:translateY(-100vh) rotate(0);opacity:1}to{transform:translateY(100vh) rotate(720deg);opacity:0}}@keyframes bounceIn{0%{transform:scale(.3);opacity:0}50%{transform:scale(1.1)}70%{transform:scale(.9)}to{transform:scale(1);opacity:1}}@keyframes slideUp{0%{transform:translateY(30px);opacity:0}to{transform:translateY(0);opacity:1}}.offline-notice{background:#fef3c7;color:#92400e;padding:.5rem 1rem;border-radius:8px;margin-top:1rem;font-size:.9rem;text-align:center;border:1px solid #f59e0b}.action-card h3{font-size:1.6rem;font-weight:700;color:#1f2937;margin-bottom:1.5rem;text-align:left;display:flex;align-items:center;gap:.8rem}} .result-container h3{background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;font-size:1.5rem;font-weight:800;margin-bottom:1.5rem;animation:successBounce .6s ease-out}.step-badge{display:inline-flex;align-items:center;justify-content:center;min-width:32px;height:32px;padding:0 .8rem;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-radius:16px;font-size:.8rem;font-weight:700;letter-spacing:.02em;box-shadow:0 4px 12px #667eea4d;flex-shrink:0}font-size: .85rem; font-weight: 800; box-shadow: 0 4px 12px rgba(102,126,234,.4); flex-shrink: 0; white-space: nowrap; animation: badgePulse 2s ease-in-out infinite; } @keyframes badgePulse{0%,100%{box-shadow:0 4px 12px #667eea66;transform:scale(1)}50%{box-shadow:0 6px 16px #667eea99;transform:scale(1.05)}}.template-count{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:.4rem 1rem;border-radius:20px;font-size:.9rem;font-weight:600;box-shadow:0 2px 8px #667eea4d}.templates-section::-webkit-scrollbar{width:8px}.templates-section::-webkit-scrollbar-track{background:#0000000d;border-radius:4px}.templates-section::-webkit-scrollbar-thumb{background:linear-gradient(135deg,#667eea,#764ba2);border-radius:4px}.templates-section::-webkit-scrollbar-thumb:hover{background:linear-gradient(135deg,#5568d3,#6a3f8f)}.action-panel{position:sticky;top:2rem;display:flex;flex-direction:column;gap:1.5rem;animation:fadeInRight .6s ease-out}@keyframes fadeInRight{0%{opacity:0;transform:translate(30px)}to{opacity:1;transform:translate(0)}}.action-card{background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:20px;padding:2rem;box-shadow:0 20px 60px #0000004d,inset 0 1px #fff9;border:1px solid rgba(255,255,255,.3)}.templates-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:1.5rem;margin-bottom:2rem}.template-card{position:relative;border-radius:20px;overflow:hidden;cursor:pointer;transition:all .4s cubic-bezier(.4,0,.2,1);border:3px solid transparent;background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 8px 32px #0000001a,0 0 0 1px #fff3,inset 0 1px #ffffff4d;height:280px;width:100%;display:flex;flex-direction:column}.template-card:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,#667eea1a,#764ba21a);opacity:0;transition:opacity .3s ease;z-index:1;pointer-events:none}.template-card:hover{transform:translateY(-12px) scale(1.03);box-shadow:0 25px 50px #667eea66,0 0 0 1px #667eea4d,inset 0 1px #fff6;border-color:#667eea80}.template-card:hover:before{opacity:1}.template-card.selected{border-color:#667eea;box-shadow:0 20px 40px #667eea66,0 0 0 4px #667eea1a;transform:translateY(-8px) scale(1.02);animation:selectedPulse 2s ease-in-out infinite}@keyframes selectedPulse{0%,to{box-shadow:0 20px 40px #667eea66,0 0 0 4px #667eea1a}50%{box-shadow:0 25px 50px #667eea80,0 0 0 6px #667eea33}}.template-card img,.template-card video{width:100%;height:100%;object-fit:cover;display:block;transition:transform .3s ease;flex:1}.template-card:hover img,.template-card:hover video{transform:scale(1.1)}.template-info{display:none!important;height:0!important;padding:0!important;margin:0!important;overflow:hidden!important}.template-name{font-weight:700;color:#1f2937;font-size:1rem}.template-tag{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:.4rem .8rem;border-radius:20px;font-size:.75rem;font-weight:600;box-shadow:0 2px 8px #667eea4d}.template-card:has([data-category=搞笑]) .template-tag{background:linear-gradient(135deg,#f093fb,#f5576c)}.template-card:has([data-category=酷炫]) .template-tag{background:linear-gradient(135deg,#4facfe,#00f2fe)}.template-card:has([data-category=情绪]) .template-tag{background:linear-gradient(135deg,#fa709a,#fee140)}.video-badge{position:absolute;top:12px;right:12px;background:#000c;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);color:#fff;padding:.4rem .8rem;border-radius:12px;font-size:.85rem;font-weight:600;box-shadow:0 4px 12px #0000004d}.upload-container{display:flex;flex-direction:column;align-items:center;gap:1.5rem;border:2px dashed #d1d5db;border-radius:16px;padding:2rem;text-align:center;transition:all .3s ease;background:#f9fafb}.upload-container:hover{border-color:#667eea;background:#f0f4ff}.upload-container.drag-over{border-color:#667eea;background:#e0e7ff;transform:scale(1.02)}.upload-button{display:inline-block;padding:1.2rem 2.5rem;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-radius:16px;cursor:pointer;font-size:1rem;font-weight:600;transition:all .3s cubic-bezier(.4,0,.2,1);box-shadow:0 8px 20px #667eea4d,0 0 0 1px #ffffff1a;letter-spacing:.01em;line-height:1.2}border: none; box-shadow: 0 10px 30px rgba(102,126,234,.4); position: relative; overflow: hidden; width: 100%; text-align: center; } .upload-button::before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.3),transparent);transition:left .5s}.upload-button:hover:before{left:100%}.upload-button:hover{transform:translateY(-3px) scale(1.02);box-shadow:0 15px 40px #667eea80}.preview{width:100%;border-radius:16px;overflow:hidden;box-shadow:0 20px 60px #0000004d,0 0 0 1px #ffffff1a;transition:transform .3s ease;animation:zoomIn .5s ease-out}@keyframes zoomIn{0%{opacity:0;transform:scale(.8)}to{opacity:1;transform:scale(1)}}.preview:hover{transform:scale(1.02)}.preview img{width:100%;height:auto;display:block}.usage-info{display:flex;justify-content:space-between;align-items:center;padding:1rem;background:linear-gradient(135deg,#667eea1a,#764ba21a);border-radius:12px;margin-bottom:1rem;border:2px solid rgba(102,126,234,.2)}.usage-text{font-size:1rem;color:#1f2937;font-weight:600}.usage-text strong{color:#667eea;font-size:1.2rem;font-weight:800}.usage-warning{color:#ef4444;font-size:.9rem;font-weight:700;padding:.3rem .8rem;background:#ef44441a;border-radius:8px;animation:warningPulse 2s ease-in-out infinite}@keyframes warningPulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.8;transform:scale(1.05)}}.generate-button{display:block;width:100%;padding:1.4rem 2rem;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:16px;font-size:1.1rem;font-weight:700;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);box-shadow:0 10px 25px #667eea4d,0 0 0 1px #ffffff1a,inset 0 1px #fff3;position:relative;overflow:hidden;letter-spacing:.02em;line-height:1.2}.generate-button:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.4),transparent);transition:left .6s ease}.generate-button:after{content:"";position:absolute;top:50%;left:50%;width:0;height:0;background:#ffffff4d;border-radius:50%;transform:translate(-50%,-50%);transition:all .3s ease}.generate-button:hover:before{left:100%}.generate-button:hover:after{width:300px;height:300px}.generate-button:hover:not(:disabled){transform:translateY(-3px) scale(1.02);box-shadow:0 20px 40px #667eea80,0 0 0 1px #fff3,inset 0 1px #ffffff4d}.generate-button:before{content:"";position:absolute;top:50%;left:50%;width:0;height:0;border-radius:50%;background:#ffffff4d;transform:translate(-50%,-50%);transition:width .6s,height .6s}.generate-button:hover:before{width:500px;height:500px}.generate-button:hover:not(:disabled){transform:translateY(-3px) scale(1.02);box-shadow:0 12px 30px #667eea80}.generate-button:disabled{opacity:.6;cursor:not-allowed;transform:none;background:linear-gradient(135deg,#9ca3af,#6b7280);box-shadow:0 4px 12px #9ca3af33}.generate-button:disabled:hover{transform:none;box-shadow:0 4px 12px #9ca3af33}.processing-status{text-align:center;padding:2rem;background:#ffffffe6;border-radius:16px;border:2px dashed #667eea;animation:processingPulse 2s ease-in-out infinite;box-shadow:0 4px 15px #0000001a}@keyframes processingPulse{0%,to{border-color:#667eea;transform:scale(1)}50%{border-color:#764ba2;transform:scale(1.01)}}.status-text{font-size:1.2rem;font-weight:700;color:#1f2937;margin-bottom:1rem}.progress-bar-container{width:100%;height:32px;background:#667eea1a;border-radius:16px;overflow:hidden;margin:1.5rem 0;box-shadow:inset 0 2px 8px #0000001a}.progress-bar{height:100%;background:linear-gradient(135deg,#667eea,#764ba2);border-radius:16px;transition:width .5s ease;display:flex;align-items:center;justify-content:center;position:relative;box-shadow:0 2px 8px #667eea66;animation:progressShine 2s ease-in-out infinite}@keyframes progressShine{0%,to{box-shadow:0 2px 8px #667eea66}50%{box-shadow:0 2px 12px #667eea99}}.progress-text{color:#fff;font-size:.85rem;font-weight:800;text-shadow:0 1px 3px rgba(0,0,0,.3);letter-spacing:.5px}.progress-spinner{width:50px;height:50px;margin:0 auto;border:4px solid rgba(102,126,234,.2);border-top:4px solid #667eea;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.result-container{background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:20px;padding:2rem;box-shadow:0 20px 60px #0000004d,inset 0 1px #fff9;border:1px solid rgba(255,255,255,.3);text-align:center;animation:resultFadeIn .6s ease-out}@keyframes resultFadeIn{0%{opacity:0;transform:translateY(30px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}@keyframes successBounce{0%,to{transform:scale(1)}50%{transform:scale(1.1)}}.result-preview{width:100%;margin:0 auto 1.5rem;border-radius:16px;overflow:hidden;box-shadow:0 20px 50px #0000004d,0 0 0 1px #ffffff1a;transition:transform .3s ease}.result-preview:hover{transform:scale(1.02)}.result-preview img,.result-preview video{width:100%;height:auto;display:block}.download-button{width:100%;padding:1rem 2rem;background:linear-gradient(135deg,#10b981,#059669);color:#fff;border:none;border-radius:16px;font-size:1.1rem;font-weight:700;cursor:pointer;transition:all .3s ease;box-shadow:0 10px 30px #10b98166}.download-button:hover{background:linear-gradient(135deg,#059669,#047857);transform:translateY(-3px) scale(1.02);box-shadow:0 15px 40px #10b98180}.footer{background:#ffffff1a;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-top:1px solid rgba(255,255,255,.2);padding:1.5rem;text-align:center;color:#ffffffe6;font-weight:500;position:relative;z-index:10}@media (max-width: 1200px){.content-wrapper{grid-template-columns:1fr 380px}}@media (max-width: 992px){.content-wrapper{grid-template-columns:1fr}.action-panel{position:static}.templates-section{max-height:none}}@media (max-width: 768px){.header h1{font-size:2.2rem}.header p{font-size:1rem}.main{padding:1.5rem 1rem}.templates-section,.action-card{padding:1.5rem}.section-header{flex-direction:column;align-items:flex-start}.search-container{max-width:100%;width:100%}.section-header h2,.action-card h3{font-size:1.3rem}.templates-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:1rem}.template-card img,.template-card video{height:160px}.generate-button{font-size:1.2rem}}@media (max-width: 480px){.header{padding:2rem 1rem}.header h1{font-size:1.8rem}.templates-grid{grid-template-columns:repeat(2,1fr)}.template-card img,.template-card video{height:140px}.upload-button,.download-button,.generate-button{font-size:1rem;padding:.9rem 1.5rem}}.my-videos-panel{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);width:90%;max-width:900px;max-height:80vh;background:linear-gradient(135deg,#667eeaf2,#764ba2f2);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-radius:24px;border:1px solid rgba(255,255,255,.2);box-shadow:0 20px 60px #667eea66;z-index:1000;overflow:hidden;display:flex;flex-direction:column}.my-videos-header{display:flex;justify-content:space-between;align-items:center;padding:1.5rem 2rem;border-bottom:1px solid rgba(255,255,255,.2);background:#ffffff0d}.my-videos-header h3{color:#fff;font-size:1.5rem;font-weight:700;margin:0;text-shadow:0 2px 10px rgba(0,0,0,.3)}.close-btn{background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer;padding:.5rem;border-radius:8px;transition:all .3s ease}.close-btn:hover{background:#ffffff1a}.my-videos-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:1.5rem;padding:2rem;overflow-y:auto;flex:1}.empty-message{grid-column:1 / -1;text-align:center;color:#ffffffe6;font-size:1.2rem;padding:4rem 0;font-weight:600}.my-video-card{background:#ffffff26;border-radius:12px;overflow:hidden;border:1px solid rgba(255,255,255,.2);transition:all .3s ease;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.my-video-card:hover{transform:translateY(-4px);box-shadow:0 8px 24px #0006;border-color:#fff6;background:#fff3}.my-video-info{padding:1rem;display:flex;justify-content:space-between;align-items:center}.video-date{color:#ffffffb3;font-size:.85rem;margin:0}.download-btn-small{padding:.4rem .8rem;background:#ffffff1a;border:1px solid rgba(255,255,255,.2);border-radius:8px;color:#fff;font-size:.85rem;font-weight:600;cursor:pointer;transition:all .3s ease}.download-btn-small:hover{background:#fff3;transform:scale(1.05)}@media (max-width: 768px){.my-videos-panel{width:95%;max-height:85vh}.my-videos-grid{grid-template-columns:repeat(2,1fr);gap:1rem;padding:1.5rem}.header-actions{gap:.5rem}.user-name{display:none}.my-videos-btn,.sign-out-btn{font-size:.8rem;padding:.4rem .8rem}}@media (max-width: 768px){.sidebar{width:60px;padding:1rem .5rem}.sidebar-logo h1{font-size:1.2rem}.sidebar-logo h1 span{display:none}.nav-item{padding:1rem .5rem;font-size:.9rem}.nav-item span{display:none}.main-content{margin-left:60px}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,Helvetica,Arial,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;color:#333}#root{min-height:100vh}