.line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.animate-spin {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.flashcard {
    transition: opacity 0.3s ease-in-out;
}

input[type="checkbox"] {
    cursor: pointer;
}

input[type="checkbox"]:checked {
    background-color: #4f46e5;
}

textarea:focus,
input:focus {
    outline: none;
    ring: 2px;
    ring-color: #4f46e5;
}

.whitespace-pre-wrap {
    white-space: pre-wrap;
}

html {
    scroll-behavior: smooth;
}

body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

@media (max-width: 640px) {
    .text-5xl {
        font-size: 2.5rem;
    }
    
    .text-6xl {
        font-size: 3rem;
    }
}