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480px){.container{padding:0 1rem}.task-card{padding:1rem}.modal-actions{flex-direction:column}.modal-actions .btn{width:100%;justify-content:center}}.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--bg-primary) 0%,var(--bg-secondary) 50%,var(--bg-primary) 100%);padding:2rem;position:relative;overflow:hidden}.auth-container:before{content:"";position:absolute;width:500px;height:500px;background:radial-gradient(circle,rgba(99,102,241,.3) 0%,transparent 70%);top:-250px;right:-250px;border-radius:50%;animation:float 6s ease-in-out infinite}.auth-container:after{content:"";position:absolute;width:400px;height:400px;background:radial-gradient(circle,rgba(168,85,247,.3) 0%,transparent 70%);bottom:-200px;left:-200px;border-radius:50%;animation:float 8s ease-in-out infinite reverse}@keyframes float{0%,to{transform:translateY(0) scale(1)}50%{transform:translateY(-20px) scale(1.1)}}.auth-box{background:linear-gradient(135deg,var(--bg-secondary) 0%,var(--bg-tertiary) 100%);border-radius:24px;padding:3rem;max-width:480px;width:100%;box-shadow:var(--shadow-xl);border:2px solid var(--border-light);position:relative;z-index:1;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);animation:slideUp .6s ease-out}.auth-header{text-align:center;margin-bottom:2.5rem}.auth-header h1{background:linear-gradient(135deg,var(--primary-light) 0%,var(--accent-purple) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;font-size:2.5rem;margin-bottom:.75rem;font-weight:800;letter-spacing:-.025em}.auth-header p{color:var(--text-secondary);font-size:1rem}.auth-form{margin-bottom:2rem}.auth-submit{width:100%;padding:1rem;font-size:1.0625rem;font-weight:700;margin-top:1rem;text-transform:uppercase;letter-spacing:.5px}.auth-submit:disabled{opacity:.5;cursor:not-allowed;transform:none!important}.auth-toggle{text-align:center;padding-top:2rem;border-top:2px solid var(--border-color)}.auth-toggle p{color:var(--text-secondary);font-size:.9375rem;margin-bottom:.5rem}.auth-toggle-btn{background:none;border:none;color:var(--primary-light);font-weight:700;cursor:pointer;padding:.5rem 1rem;transition:all .3s;border-radius:8px}.auth-toggle-btn:hover{color:var(--accent-purple);background:#6366f11a}.error-message{background:linear-gradient(135deg,#ef444433,#f8717133);color:var(--danger-light);padding:1rem 1.25rem;border-radius:12px;margin-bottom:1.5rem;font-size:.9375rem;border:2px solid var(--danger-color);font-weight:600;animation:shake .5s ease-in-out}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-5px)}75%{transform:translate(5px)}}@media (max-width: 480px){.auth-box{padding:2rem 1.5rem}.auth-header h1{font-size:2rem}}.theme-toggle{background:var(--bg-tertiary);border:2px solid var(--border-light);border-radius:50px;padding:.25rem;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:.5rem;transition:all .3s ease;position:relative;width:70px;height:36px;overflow:visible}.theme-toggle:hover{border-color:var(--primary-color);box-shadow:var(--glow)}.theme-icon{font-size:16px;z-index:1;transition:all .3s ease;color:var(--text-secondary)}.theme-toggle[data-theme=dark] .theme-icon:first-child{color:#fff}.theme-toggle[data-theme=light] .theme-icon:last-child{color:#fff}.theme-toggle-slider{position:absolute;left:3px;width:30px;height:30px;background:linear-gradient(135deg,var(--primary-color) 0%,var(--accent-purple) 100%);border-radius:50%;box-shadow:var(--shadow)}.theme-toggle[data-theme=light] .theme-toggle-slider{background:linear-gradient(135deg,var(--warning-color) 0%,var(--warning-light) 100%)}.dashboard{margin-bottom:2rem}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem;margin-bottom:2rem}.stat-card{background:linear-gradient(135deg,var(--bg-card) 0%,var(--bg-secondary) 100%);border-radius:16px;padding:1.75rem;display:flex;align-items:center;gap:1.25rem;box-shadow:var(--shadow-lg);border:2px solid var(--border-color);transition:all .3s}.stat-icon{width:60px;height:60px;border-radius:14px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.5rem;box-shadow:var(--shadow)}.stat-info{flex:1}.stat-value{font-size:2.25rem;font-weight:800;color:var(--text-primary);line-height:1;margin-bottom:.5rem}.stat-label{font-size:.9375rem;color:var(--text-secondary);font-weight:600;text-transform:uppercase;letter-spacing:.5px}.progress-section{background:linear-gradient(135deg,var(--bg-card) 0%,var(--bg-secondary) 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0}}.progress-info{text-align:center;color:var(--text-secondary);font-size:.9375rem;font-weight:600}.toast-container{position:fixed;top:20px;right:20px;z-index:10000;display:flex;flex-direction:column;gap:1rem;max-width:400px}.toast{background:var(--bg-card);border-radius:12px;padding:1rem 1.25rem;box-shadow:var(--shadow-xl);border:2px solid var(--border-light);display:flex;align-items:center;gap:.875rem;min-width:300px}.toast-success{border-left:4px solid var(--success-color)}.toast-error{border-left:4px solid var(--danger-color)}.toast-warning{border-left:4px solid var(--warning-color)}.toast-info{border-left:4px solid var(--primary-color)}.toast-icon{font-size:1.5rem;display:flex;align-items:center}.toast-success .toast-icon{color:var(--success-color)}.toast-error .toast-icon{color:var(--danger-color)}.toast-warning .toast-icon{color:var(--warning-color)}.toast-info .toast-icon{color:var(--primary-color)}.toast-message{flex:1;color:var(--text-primary);font-weight:600;font-size:.9375rem}.toast-close{background:none;border:none;color:var(--text-secondary);cursor:pointer;padding:.25rem;display:flex;align-items:center;transition:all .3s;border-radius:6px}.toast-close:hover{background:var(--bg-hover);color:var(--text-primary)}.confirm-modal{max-width:450px;text-align:center}.confirm-icon{width:80px;height:80px;margin:0 auto 1.5rem;border-radius:50%;background:linear-gradient(135deg,#ef444433,#f8717133);border:3px solid var(--danger-color);display:flex;align-items:center;justify-content:center;color:var(--danger-color)}.confirm-content{margin-bottom:2rem}.confirm-modal .modal-title{margin-bottom:1rem;font-size:1.5rem}.confirm-message{color:var(--text-secondary);font-size:1rem;line-height:1.6}@media (max-width: 768px){.stats-grid{grid-template-columns:1fr}.toast-container{right:10px;left:10px;max-width:none}.toast{min-width:auto}}