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var(--border-light);border-radius:var(--radius-md);box-shadow:var(--shadow-hover);padding:1rem;display:flex;align-items:flex-start;gap:.75rem;animation:toastSlideIn .3s ease}@keyframes toastSlideIn{0%{opacity:0;transform:translate(100%)}to{opacity:1;transform:translate(0)}}@keyframes toastSlideOut{0%{opacity:1;transform:translate(0)}to{opacity:0;transform:translate(100%)}}.toast-icon{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:1rem}.toast.success .toast-icon{background:#e8f5e9;color:var(--success-color)}.toast.error .toast-icon{background:#ffebee;color:var(--danger-color)}.toast.info .toast-icon{background:#e3f2fd;color:var(--info-color)}.toast-content{flex:1}.toast-title{font-weight:600;color:var(--text-primary);margin-bottom:.25rem;font-size:.9375rem}.toast-message{font-size:.875rem;color:var(--text-secondary);margin:0}.toast-close{background:none;border:none;color:var(--text-light);cursor:pointer;padding:0;width:20px;height:20px;display:flex;align-items:center;justify-content:center}.toast-close:hover{color:var(--text-primary)}@media(max-width:992px){.navbar-menu{display:none}.bottom-nav{display:flex}.main-content{padding-bottom:5rem}}@media(max-width:992px)and (min-width:769px){.navbar-actions{gap:.75rem}.btn-icon{width:38px;height:38px}.bottom-nav-item i{font-size:1.375rem}.bottom-nav-item span:not(.bottom-nav-badge){font-size:.75rem}}@media(max-width:768px){.container{padding:0 1rem}.welcome-section{flex-direction:column;align-items:flex-start;gap:1rem}.welcome-section .btn{width:100%}.stats-grid{grid-template-columns:repeat(2,1fr)}.tutors-grid{grid-template-columns:1fr}.lesson-actions{flex-wrap:wrap}.lesson-actions .btn{flex:1 1 auto;min-width:max-content}.toast{min-width:auto;max-width:100%}.toast-container{right:1rem;left:1rem;max-width:calc(100% - 2rem)}.navbar-actions{gap:.5rem}.btn-icon{width:36px;height:36px;font-size:.9375rem}.bottom-nav-item i{font-size:1.125rem}.bottom-nav-item span:not(.bottom-nav-badge){font-size:.6875rem}}@media(max-width:640px){.stats-grid{grid-template-columns:1fr}}@media(max-width:425px){.navbar .container{padding:0 .75rem}.logo .logo-img{height:36px}.navbar-actions{gap:.375rem}.btn-icon{width:32px;height:32px;font-size:.875rem}.bottom-nav{padding:.5rem 0}.bottom-nav-item{padding:.375rem .125rem;gap:.125rem}.bottom-nav-item i{font-size:1rem}.bottom-nav-item span:not(.bottom-nav-badge){font-size:.625rem;line-height:1.2}.bottom-nav-badge{font-size:.5625rem;padding:.0625rem .25rem;min-width:14px}}#app{min-height:100vh;background-image:radial-gradient(circle at 15% 20%,rgba(230,126,34,.04) 0%,transparent 40%),radial-gradient(circle at 85% 80%,rgba(255,215,0,.04) 0%,transparent 40%),radial-gradient(circle at 50% 50%,rgba(27,54,93,.02) 0%,transparent 50%)}