@keyframes fadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.animate-fade-in {
    animation: fadeIn 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.animate-shake {
    animation: shake 0.5s cubic-bezier(0.36, 0.07, 0.19, 0.97) both;
}

::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: #0f0f0f;
}
::-webkit-scrollbar-thumb {
    background: linear-gradient(to bottom, #3b82f6, #8b5cf6);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: #3b82f6;
}

input::placeholder {
    color: #4b5563;
    font-size: 0.9rem;
}

.glass-card {
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

#urlInput:focus {
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.15);
}