*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;height:100vh;overflow:hidden;position:relative}.background-container{position:fixed;top:0;left:0;width:100%;height:100%;z-index:-2}.background-slide{position:absolute;top:0;left:0;width:100%;height:100%;background-size:cover;background-position:center;background-repeat:no-repeat;opacity:0;transition:opacity 2.5s cubic-bezier(.4,0,.2,1)}.background-slide.active{opacity:1}.slide-1{background-image:linear-gradient(135deg,#0006,#0009),url(https://images.unsplash.com/photo-1605745341112-85968b19335b?ixlib=rb-4.0.3&auto=format&fit=crop&w=2000&q=80)}.slide-2{background-image:linear-gradient(135deg,#0000004d,#00000080),url(https://images.unsplash.com/photo-1621862681400-a2a7321dc1c2?ixlib=rb-4.0.3&auto=format&fit=crop&w=2000&q=80)}.slide-3{background-image:linear-gradient(135deg,#0006,#0009),url(https://images.unsplash.com/photo-1596434220574-9af8bf9a0891?ixlib=rb-4.0.3&auto=format&fit=crop&w=2000&q=80)}.slide-4{background-image:linear-gradient(135deg,#0000004d,#00000080),url(https://images.unsplash.com/photo-1626186032295-5c0d509bbad8?ixlib=rb-4.0.3&auto=format&fit=crop&w=2000&q=80)}.login-container{height:100vh;display:flex;align-items:center;justify-content:center;position:relative;z-index:1}.login-content{text-align:center;max-width:400px;padding:2rem;animation:fadeInUp 1s ease-out}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.logo{font-size:2.5rem;color:#fff;margin-bottom:1rem;font-weight:300;letter-spacing:2px}.login-title{color:#fff;font-size:1.25rem;font-weight:400;margin-bottom:3rem;opacity:.9;line-height:1.5}.sso-button{background:#fffffff2;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.2);border-radius:50px;color:#2c3e50;font-weight:500;font-size:1rem;padding:.875rem 2.5rem;text-decoration:none;display:inline-flex;align-items:center;gap:.75rem;transition:all .3s cubic-bezier(.4,0,.2,1);box-shadow:0 10px 40px #0003;position:relative;overflow:hidden}.sso-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}.sso-button:hover:before{left:100%}.sso-button:hover{transform:translateY(-3px);box-shadow:0 20px 60px #0000004d;color:#2c3e50;background:#fff}.sso-button:active{transform:translateY(-1px);transition:all .1s ease}.sso-button i{font-size:1.1rem;transition:transform .3s ease}.sso-button:hover i{transform:translate(3px)}.overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#0000001a;z-index:-1}.sso-button.loading{pointer-events:none}.sso-button.loading i{animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.sso-button.disabled{pointer-events:none;cursor:not-allowed;opacity:.95}.sso-button.disabled:hover{transform:none;box-shadow:0 10px 40px #0003}@media (max-width: 768px){.login-content{padding:1rem;max-width:300px}.logo{font-size:2rem}.login-title{font-size:1.1rem;margin-bottom:2.5rem}.sso-button{padding:.75rem 2rem;font-size:.95rem}}.background-slide{animation:subtleZoom 20s ease-in-out infinite}@keyframes subtleZoom{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}.slide-indicator{position:fixed;bottom:2rem;left:50%;transform:translate(-50%);display:flex;gap:.5rem;z-index:2}.slide-dot{width:8px;height:8px;border-radius:50%;background:#ffffff4d;transition:all .3s ease}.slide-dot.active{background:#fffc;transform:scale(1.2)}