body {
    font-family: 'Inter', sans-serif;
    background-color: #f8f9fa;
}

.navbar-brand {
    font-weight: 700;
    color: #0d6efd;
}

.hero-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #0d6efd 0%, #00d4ff 100%);
    color: white;
}

.shorten-box {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    margin-top: -50px;
}

.feature-card {
    border: none;
    transition: transform 0.3s;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
}

.lang-flag {
    width: 20px;
    height: auto;
    margin-right: 5px;
}

/* Custom Code Section */
#customCodeInput {
    animation: slideDown 0.3s ease-out;
}

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

/* Links List */
.links-section .card {
    border: none;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 15px;
    transition: all 0.3s ease;
}

.links-section .card:hover {
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
    transform: translateY(-2px);
}

.links-section .btn-group-vertical .btn {
    border-radius: 0.375rem;
    margin-bottom: 2px;
}

.links-section .btn-group-vertical .btn:last-child {
    margin-bottom: 0;
}

.links-section code {
    background-color: #f8f9fa;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.875em;
}

.empty-message {
    text-align: center;
    padding: 40px 20px;
    color: #6c757d;
}

/* Responsive */
@media (max-width: 768px) {
    .shorten-box {
        margin-top: -30px;
        padding: 20px;
    }
    
    .hero-section {
        padding: 60px 0;
    }
    
    .hero-section h1 {
        font-size: 2rem;
    }
}