.auth-container{display:flex;min-height:100vh;width:100%;background-color:#f9fafb}.welcome-panel{flex:1;position:relative;display:none;justify-content:center;align-items:center;padding:2rem;color:white;text-align:center;overflow:hidden}@media (min-width:1024px){.welcome-panel{display:flex}}.animated-covers-container{position:absolute;top:0;left:0;width:100%;height:100%;z-index:1;display:flex;gap:20px;transform:rotate(-30deg) scale(1.5);opacity:.8}.covers-track{display:flex;flex-direction:column;flex-shrink:0;animation-timing-function:linear;animation-iteration-count:infinite}.book-cover-item{width:200px;height:auto;margin:10px 0;border-radius:8px;box-shadow:0 10px 20px rgba(0,0,0,.3)}@keyframes scrollVertical{0%{transform:translateY(0)}to{transform:translateY(-50%)}}@keyframes scrollVerticalReverse{0%{transform:translateY(-50%)}to{transform:translateY(0)}}.welcome-panel:before{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background-color:rgba(26,32,44,.7);z-index:2}.welcome-content{position:relative;z-index:3;display:flex;flex-direction:column;align-items:center;gap:1.5rem;animation:fadeIn 1s ease-in-out}.welcome-icon{font-size:4rem}.welcome-title{font-size:2.25rem;font-weight:700}.welcome-text{font-size:1.125rem;max-width:400px;line-height:1.75}.form-panel{flex:1;display:flex;justify-content:center;align-items:center;padding:1rem;z-index:5}.auth-card{width:100%;max-width:400px;background-color:white;padding:2.5rem;border-radius:.75rem;box-shadow:0 10px 15px -3px rgba(0,0,0,.1),0 4px 6px -2px rgba(0,0,0,.05);animation:slideInUp .8s ease-in-out}.auth-header{text-align:center;margin-bottom:2rem}.auth-header h1{font-size:1.875rem;font-weight:600;color:#1f2937}.auth-header p{color:#6b7280;margin-top:.5rem}.auth-form{display:flex;flex-direction:column;gap:1.25rem}.input-group{position:relative}.input-group svg{position:absolute;top:50%;left:.75rem;transform:translateY(-50%);color:#9ca3af}.input-group input{width:100%;padding:.75rem .75rem .75rem 2.5rem;border:1px solid #d1d5db;border-radius:.5rem;transition:border-color .2s,box-shadow .2s}.input-group input:focus{outline:none;border-color:#3b82f6;box-shadow:0 0 0 2px rgba(59,130,246,.4)}.error-message{color:#ef4444;font-size:.875rem;text-align:center}.auth-button{width:100%;padding:.75rem;border:none;border-radius:.5rem;background-color:#3b82f6;color:white;font-weight:600;cursor:pointer;transition:background-color .2s}.auth-button:hover{background-color:#2563eb}.auth-button:disabled{background-color:#9ca3af;cursor:not-allowed}.auth-footer{margin-top:1.5rem;text-align:center;font-size:.875rem;color:#6b7280}.switch-button{background:none;border:none;color:#3b82f6;font-weight:600;cursor:pointer;margin:0 .25rem}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}