.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(to bottom,var(--bg-app),var(--bg-primary));padding:var(--spacing-4);font-family:var(--font-sans)}.auth-card{background:var(--bg-secondary);border:1px solid var(--border-primary);border-radius:var(--radius-xl);padding:var(--spacing-8) var(--spacing-6);width:100%;max-width:420px;box-shadow:var(--shadow-2xl)}.auth-header{text-align:center;margin-bottom:var(--spacing-6);display:flex;flex-direction:column;align-items:center}.zeta-logo-container{display:flex;justify-content:center;align-items:center;margin-bottom:var(--spacing-4)}.zeta-logo{max-width:100%;height:auto;object-fit:contain}.powered-by{display:flex;align-items:center;justify-content:center;gap:var(--spacing-2);margin-bottom:var(--spacing-6)}.powered-by-text{font-size:var(--font-sm);color:var(--text-muted);font-weight:var(--font-weight-medium);letter-spacing:var(--letter-spacing-wider);text-transform:uppercase}.lantern-logo{height:32px;width:auto;opacity:.85;transition:opacity var(--transition-slow),transform var(--transition-slow);cursor:pointer}.lantern-logo:hover{opacity:1;transform:translateY(-1px)}.lantern-logo:active{opacity:.9;transform:translateY(0)}.auth-subtitle{font-family:var(--font-display);font-size:var(--font-h2);font-weight:var(--font-weight-bold);color:var(--text-primary);margin-bottom:var(--spacing-2);letter-spacing:var(--letter-spacing-tight)}.auth-description{color:var(--text-secondary);font-size:var(--font-sm);line-height:var(--line-height-relaxed);text-align:center;margin-top:var(--spacing-2)}.form-group{margin-bottom:var(--spacing-4)}.auth-form .form-group:last-of-type{margin-bottom:var(--spacing-6)}.form-label{display:block;color:var(--text-primary);margin-bottom:var(--spacing-2);font-weight:var(--font-weight-medium)}.form-input,.form-label{font-size:var(--font-sm)}.form-input{width:100%;padding:var(--spacing-3) var(--spacing-4);border:1px solid var(--border-primary);border-radius:var(--radius-md);color:var(--text-primary)!important;font-family:var(--font-sans);transition:all var(--transition-fast);-webkit-text-fill-color:var(--text-primary)!important}.form-input,.form-input:focus{background:var(--bg-tertiary)!important}.form-input:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px var(--accent-primary-alpha)}.form-input.error{border-color:var(--status-error-border);animation:shake .4s ease-in-out}@keyframes shake{0%,to{transform:translateX(0)}10%,30%,50%,70%,90%{transform:translateX(-4px)}20%,40%,60%,80%{transform:translateX(4px)}}.form-input::placeholder{color:var(--text-disabled)!important;font-weight:var(--font-weight-normal);opacity:1}.form-input:-webkit-autofill,.form-input:-webkit-autofill:focus,.form-input:-webkit-autofill:hover{-webkit-text-fill-color:var(--text-primary)!important;-webkit-box-shadow:0 0 0 1000px var(--bg-tertiary) inset!important;transition:background-color 5000s ease-in-out 0s;border:1px solid var(--border-primary)!important}.password-input-wrapper{position:relative}.password-toggle{position:absolute;right:var(--spacing-3);top:50%;transform:translateY(-50%);background:none;border:none;color:var(--text-disabled);cursor:pointer;padding:var(--spacing-1);display:flex;align-items:center;justify-content:center;transition:color var(--transition-fast);z-index:10}.password-toggle:hover{color:var(--text-primary)}.form-options{justify-content:space-between;margin-bottom:var(--spacing-4);font-size:var(--font-sm)}.checkbox-group,.form-options{display:flex;align-items:center}.checkbox-input{margin-right:var(--spacing-2);cursor:pointer;width:16px;height:16px;accent-color:var(--accent-primary)}.checkbox-label{color:var(--text-muted);cursor:pointer;user-select:none;font-size:var(--font-sm)}.forgot-link{color:var(--accent-primary);text-decoration:none;font-weight:var(--font-weight-medium);font-size:var(--font-sm);transition:all var(--transition-fast)}.forgot-link:hover{color:var(--accent-primary-hover);text-decoration:underline}.submit-button{width:100%;padding:var(--spacing-3) var(--spacing-4);background:var(--bg-tertiary);border:1px solid var(--border-primary);border-radius:var(--radius-md);color:var(--text-disabled);font-size:var(--font-sm);font-weight:var(--font-weight-semibold);cursor:not-allowed;transition:all var(--transition-fast);font-family:var(--font-sans);display:flex;align-items:center;justify-content:center;gap:var(--spacing-2);min-height:var(--touch-target)}.submit-button:disabled{opacity:var(--opacity-disabled)}.submit-button-ready{background:var(--accent-primary);border-color:var(--accent-primary);color:var(--text-inverse);cursor:pointer;box-shadow:0 2px 8px var(--accent-primary-alpha);animation:buttonReady .3s ease-out}@keyframes buttonReady{0%{transform:scale(.98);box-shadow:0 0 0 transparent}50%{transform:scale(1.01);box-shadow:0 4px 12px var(--accent-primary-alpha)}to{transform:scale(1);box-shadow:0 2px 8px var(--accent-primary-alpha)}}.submit-button-ready:hover:not(:disabled){background:var(--accent-primary-hover);border-color:var(--accent-primary-hover);transform:translateY(-1px);box-shadow:0 4px 12px var(--accent-primary-alpha)}.submit-button-ready:active:not(:disabled){transform:translateY(0);box-shadow:0 1px 4px var(--accent-primary-alpha)}.submit-button-ready:focus-visible{outline:2px solid var(--accent-primary);outline-offset:2px}.button-spinner{width:16px;height:16px;border:2px solid;border-right:2px solid transparent;border-radius:50%;animation:spin .6s linear infinite}@keyframes spin{to{transform:rotate(1turn)}}.oauth-divider,.oauth-section{margin:var(--spacing-6) 0}.oauth-divider{position:relative;text-align:center;display:flex;align-items:center;gap:var(--spacing-4)}.oauth-divider:after,.oauth-divider:before{content:"";flex:1;height:1px;background:var(--border-primary)}.oauth-divider-text{color:var(--text-muted);font-size:var(--font-xs);font-weight:var(--font-weight-medium);flex-shrink:0}.google-signin-button{width:100%;display:flex;align-items:center;justify-content:center;padding:var(--spacing-3) var(--spacing-4);background:var(--bg-tertiary);border:1px solid var(--border-primary);border-radius:var(--radius-md);color:var(--text-primary);font-size:var(--font-sm);font-weight:var(--font-weight-medium);cursor:pointer;transition:all var(--transition-fast);font-family:var(--font-sans);min-height:var(--touch-target)}.google-signin-button:hover:not(:disabled){background:var(--bg-hover);border-color:var(--border-secondary);transform:translateY(-1px);box-shadow:var(--shadow-sm)}.google-signin-button:active:not(:disabled){transform:translateY(0)}.google-signin-button:focus-visible{outline:2px solid var(--accent-primary);outline-offset:2px}.google-icon{width:20px;height:20px;margin-right:var(--spacing-2);flex-shrink:0}.signup-link-container{text-align:center;margin-top:var(--spacing-6)}.signup-text{font-size:var(--font-sm);color:var(--text-muted);line-height:var(--line-height-normal)}.signup-link{color:var(--accent-primary);text-decoration:none;font-weight:var(--font-weight-semibold);transition:all var(--transition-fast)}.signup-link:hover{color:var(--accent-primary-hover);text-decoration:underline}.password-requirements{color:var(--text-disabled)}.password-mismatch,.password-requirements{font-size:var(--font-xs);margin-top:var(--spacing-1);line-height:var(--line-height-normal)}.password-mismatch{color:var(--status-error);display:flex;align-items:center;gap:var(--spacing-1);animation:slideDown .2s ease-out}.error-message,.success-message{padding:var(--spacing-3) var(--spacing-4);border-radius:var(--radius-md);font-size:var(--font-sm);margin-bottom:var(--spacing-4);border:1px solid;display:flex;align-items:flex-start;gap:var(--spacing-2);animation:slideDown .3s ease-out;line-height:var(--line-height-normal)}.error-message{background:var(--status-error-bg);border-color:var(--status-error-border);color:var(--status-error)}.success-message{background:var(--status-success-bg);border-color:var(--status-success-border);color:var(--status-success)}@keyframes slideDown{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.message-icon{flex-shrink:0;width:18px;height:18px;margin-top:1px}.message-text{flex:1}.form-actions{display:flex;justify-content:space-between;align-items:center;margin-top:var(--spacing-4);gap:var(--spacing-4)}.back-button,.resend-button{background:none;border:none;color:var(--accent-primary);font-size:var(--font-sm);font-weight:var(--font-weight-medium);cursor:pointer;text-decoration:underline;padding:0;transition:all var(--transition-fast);font-family:var(--font-sans)}.back-button:hover,.resend-button:hover{color:var(--accent-primary-hover);text-decoration-thickness:2px}.resend-button:disabled{opacity:var(--opacity-disabled);cursor:not-allowed}.back-button[href]{color:var(--accent-primary);text-decoration:underline;font-size:var(--font-sm);transition:color var(--transition-fast)}.back-button[href]:hover{color:var(--accent-primary-hover)}@media (max-width:640px){.auth-container{padding:var(--spacing-2)}.auth-card{padding:var(--spacing-6) var(--spacing-4);max-width:none;margin:0;border-radius:var(--radius-lg)}.auth-subtitle{font-size:var(--font-lg)}.powered-by{gap:var(--spacing-1)}.powered-by-text{font-size:var(--font-xs)}.lantern-logo{height:28px}}@media (prefers-reduced-motion:reduce){.submit-button-ready{animation:none}.google-signin-button:hover:not(:disabled),.lantern-logo:hover,.submit-button-ready:hover:not(:disabled){transform:none}.error-message,.form-input.error,.password-mismatch,.success-message{animation:none}}[data-theme=light] .auth-container{background:linear-gradient(to bottom,var(--bg-app),var(--bg-primary))}[data-theme=light] .auth-card{background:var(--bg-primary);box-shadow:var(--shadow-lg)}[data-theme=light] .form-input{-webkit-text-fill-color:var(--text-primary)!important}[data-theme=light] .form-input,[data-theme=light] .form-input:focus{background:var(--bg-primary)!important}[data-theme=light] .form-input:-webkit-autofill,[data-theme=light] .form-input:-webkit-autofill:focus,[data-theme=light] .form-input:-webkit-autofill:hover{-webkit-text-fill-color:var(--text-primary)!important;-webkit-box-shadow:0 0 0 1000px var(--bg-primary) inset!important;border:1px solid var(--border-primary)!important}[data-theme=light] .google-signin-button,[data-theme=light] .submit-button{background:var(--bg-primary)}[data-theme=light] .oauth-divider:after,[data-theme=light] .oauth-divider:before{background:var(--border-secondary)}