body {
    font-family: 'Vazirmatn', sans-serif;
    background-color: #F9FAFB;
}

.fade-in {
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

#app-sidebar {
    transition: transform 0.3s ease-in-out;
    transform: translateX(100%);
}

#app-sidebar.sidebar-open {
    transform: translateX(0);
}

@media (min-width: 1024px) {
    #main-content.sidebar-open {
        margin-right: 16rem;
    }
}

.tab-active {
    background-color: #4F46E5 !important;
    color: white !important;
}

.chat-bubble {
    max-width: 80%;
    padding: 10px 15px;
    border-radius: 15px;
    margin-bottom: 10px;
    font-size: 0.9rem;
    line-height: 1.5;
}

.chat-user { background-color: #4F46E5; color: white; border-bottom-left-radius: 2px; margin-left: auto; }
.chat-ai { background-color: #E5E7EB; color: #1F2937; border-bottom-right-radius: 2px; margin-right: auto; }

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #f1f1f1; }
::-webkit-scrollbar-thumb { background: #c7c7c7; border-radius: 4px; }