/* Custom CSS for World Heritage Learning System */

/* Line clamp utilities for text truncation */
.line-clamp-1 {
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

.line-clamp-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;  
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Smooth transitions */
.transition-shadow {
    transition: box-shadow 0.15s ease-in-out;
}

.transition-colors {
    transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out;
}

/* Heritage card specific styles */
.heritage-card {
    background: white;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: box-shadow 0.15s ease-in-out, transform 0.15s ease-in-out;
    cursor: pointer;
}

.heritage-card:hover {
    box-shadow: 0 10px 25px -3px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

/* Toast notifications */
@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOutRight {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

/* Loading spinner */
.spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #3498db;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 2s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Fade in animation */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Focus states for accessibility */
button:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 2px solid #3b82f6;
    outline-offset: 2px;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}