@keyframes rotate{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.animated-bg{position:relative;min-height:100vh;background:#000;overflow:hidden;z-index:-1}.animated-circle{position:absolute;border-radius:50%;border:3px solid;animation:pulse 4s ease-in-out infinite;z-index:-1}.auth-card-overlay{position:relative;z-index:10;backdrop-filter:blur(10px);background:rgba(0,0,0,.6);border:1px solid rgba(255,255,255,.1)}.theme-neon .animated-bg:before{width:600px;height:600px;background:conic-gradient(from 0deg,transparent 0deg,#ff0080 90deg,#ffff00 180deg,#00ff00 270deg,transparent 1turn);animation:rotate 8s linear infinite;filter:blur(60px);opacity:.8}.theme-neon .animated-bg:after,.theme-neon .animated-bg:before{content:"";position:absolute;top:50%;left:50%;border-radius:50%;transform:translate(-50%,-50%) rotate(0deg);z-index:-1}.theme-neon .animated-bg:after{width:500px;height:500px;background:conic-gradient(from 180deg,transparent 0deg,#00ffff 90deg,#ff00ff 180deg,#ffff00 270deg,transparent 1turn);animation:rotate 12s linear infinite reverse;filter:blur(70px);opacity:.6}.theme-neon .circle-1{top:50%;left:50%;width:400px;height:400px;border-color:rgba(255,0,128,.6);transform:translate(-50%,-50%) rotate(0deg);animation:rotate 10s linear infinite,pulse 4s ease-in-out infinite}.theme-neon .circle-2{top:50%;left:50%;width:480px;height:480px;border-color:rgba(255,255,0,.6);transform:translate(-50%,-50%) rotate(45deg);animation:rotate 15s linear infinite reverse,pulse 4s ease-in-out 1s infinite}.theme-neon .circle-3{top:50%;left:50%;width:560px;height:560px;border-color:rgba(0,255,0,.6);transform:translate(-50%,-50%) rotate(90deg);animation:rotate 20s linear infinite,pulse 4s ease-in-out 2s infinite}.theme-ocean .animated-bg:before{width:600px;height:600px;background:conic-gradient(from 0deg,transparent 0deg,#0066ff 90deg,#00ccff 180deg,#00ffcc 270deg,transparent 1turn);animation:rotate 10s linear infinite;filter:blur(60px);opacity:.8}.theme-ocean .animated-bg:after,.theme-ocean .animated-bg:before{content:"";position:absolute;top:50%;left:50%;border-radius:50%;transform:translate(-50%,-50%) rotate(0deg);z-index:-1}.theme-ocean .animated-bg:after{width:500px;height:500px;background:conic-gradient(from 180deg,transparent 0deg,#0099ff 90deg,#00ffff 180deg,#0066cc 270deg,transparent 1turn);animation:rotate 14s linear infinite reverse;filter:blur(70px);opacity:.6}.theme-ocean .circle-1{top:50%;left:50%;width:400px;height:400px;border-color:rgba(0,102,255,.6);transform:translate(-50%,-50%) rotate(0deg);animation:rotate 10s linear infinite,pulse 4s ease-in-out infinite}.theme-ocean .circle-2{top:50%;left:50%;width:480px;height:480px;border-color:rgba(0,204,255,.6);transform:translate(-50%,-50%) rotate(45deg);animation:rotate 15s linear infinite reverse,pulse 4s ease-in-out 1s infinite}.theme-ocean .circle-3{top:50%;left:50%;width:560px;height:560px;border-color:rgba(0,255,204,.6);transform:translate(-50%,-50%) rotate(90deg);animation:rotate 20s linear infinite,pulse 4s ease-in-out 2s infinite}.theme-sunset .animated-bg:before{width:600px;height:600px;background:conic-gradient(from 0deg,transparent 0deg,#ff6600 90deg,#ff3366 180deg,#cc00ff 270deg,transparent 1turn);animation:rotate 8s linear infinite;filter:blur(60px);opacity:.8}.theme-sunset .animated-bg:after,.theme-sunset .animated-bg:before{content:"";position:absolute;top:50%;left:50%;border-radius:50%;transform:translate(-50%,-50%) rotate(0deg);z-index:-1}.theme-sunset .animated-bg:after{width:500px;height:500px;background:conic-gradient(from 180deg,transparent 0deg,#ff9900 90deg,#ff0066 180deg,#9900ff 270deg,transparent 1turn);animation:rotate 12s linear infinite reverse;filter:blur(70px);opacity:.6}.theme-sunset .circle-1{top:50%;left:50%;width:400px;height:400px;border-color:rgba(255,102,0,.6);transform:translate(-50%,-50%) rotate(0deg);animation:rotate 10s linear infinite,pulse 4s ease-in-out infinite}.theme-sunset .circle-2{top:50%;left:50%;width:480px;height:480px;border-color:rgba(255,51,102,.6);transform:translate(-50%,-50%) rotate(45deg);animation:rotate 15s linear infinite reverse,pulse 4s ease-in-out 1s infinite}.theme-sunset .circle-3{top:50%;left:50%;width:560px;height:560px;border-color:rgba(204,0,255,.6);transform:translate(-50%,-50%) rotate(90deg);animation:rotate 20s linear infinite,pulse 4s ease-in-out 2s infinite}.theme-aurora .animated-bg:before{width:600px;height:600px;background:conic-gradient(from 0deg,transparent 0deg,#00ff88 90deg,#8800ff 180deg,#00aaff 270deg,transparent 1turn);animation:rotate 10s linear infinite;filter:blur(60px);opacity:.8}.theme-aurora .animated-bg:after,.theme-aurora .animated-bg:before{content:"";position:absolute;top:50%;left:50%;border-radius:50%;transform:translate(-50%,-50%) rotate(0deg);z-index:-1}.theme-aurora .animated-bg:after{width:500px;height:500px;background:conic-gradient(from 180deg,transparent 0deg,#00ffaa 90deg,#aa00ff 180deg,#0088ff 270deg,transparent 1turn);animation:rotate 14s linear infinite reverse;filter:blur(70px);opacity:.6}.theme-aurora .circle-1{top:50%;left:50%;width:400px;height:400px;border-color:rgba(0,255,136,.6);transform:translate(-50%,-50%) rotate(0deg);animation:rotate 10s linear infinite,pulse 4s ease-in-out infinite}.theme-aurora .circle-2{top:50%;left:50%;width:480px;height:480px;border-color:rgba(136,0,255,.6);transform:translate(-50%,-50%) rotate(45deg);animation:rotate 15s linear infinite reverse,pulse 4s ease-in-out 1s infinite}.theme-aurora .circle-3{top:50%;left:50%;width:560px;height:560px;border-color:rgba(0,170,255,.6);transform:translate(-50%,-50%) rotate(90deg);animation:rotate 20s linear infinite,pulse 4s ease-in-out 2s infinite}.theme-minimal .animated-bg:before{width:600px;height:600px;background:conic-gradient(from 0deg,transparent 0deg,#666666 90deg,#999999 180deg,#cccccc 270deg,transparent 1turn);animation:rotate 12s linear infinite;filter:blur(80px);opacity:.5}.theme-minimal .animated-bg:after,.theme-minimal .animated-bg:before{content:"";position:absolute;top:50%;left:50%;border-radius:50%;transform:translate(-50%,-50%) rotate(0deg);z-index:-1}.theme-minimal .animated-bg:after{width:500px;height:500px;background:conic-gradient(from 180deg,transparent 0deg,#888888 90deg,#aaaaaa 180deg,#555555 270deg,transparent 1turn);animation:rotate 16s linear infinite reverse;filter:blur(90px);opacity:.4}.theme-minimal .circle-1{top:50%;left:50%;width:400px;height:400px;border-color:rgba(150,150,150,.4);transform:translate(-50%,-50%) rotate(0deg);animation:rotate 12s linear infinite,pulse 5s ease-in-out infinite}.theme-minimal .circle-2{top:50%;left:50%;width:480px;height:480px;border-color:rgba(180,180,180,.4);transform:translate(-50%,-50%) rotate(45deg);animation:rotate 18s linear infinite reverse,pulse 5s ease-in-out 1s infinite}.theme-minimal .circle-3{top:50%;left:50%;width:560px;height:560px;border-color:rgba(120,120,120,.4);transform:translate(-50%,-50%) rotate(90deg);animation:rotate 24s linear infinite,pulse 5s ease-in-out 2s infinite}