style.css

/* Custom styles for Video Downloader */

* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Custom animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
    }
    to {
        transform: translateX(0);
    }
}

/* Toast notification styles */
#toast {
    z-index: 9999;
}

#toast.show {
    animation: slideInRight 0.3s ease-out;
}

/* Loading spinner */
.spinner {
    border: 3px solid #f3f3f3;
    border-top: 3px solid #3b82f6;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
}

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

/* Button hover effects */
.btn-primary {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #1d4ed8, #1e40af);
    transform: translateY(-1px);
    box-shadow: 0 10px 20px rgba(59, 130, 246, 0.3);
}

/* Form focus styles */
input:focus, select:focus {
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Card hover effects */
.feature-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

/* Progress bar */
.progress-bar {
    background: linear-gradient(90deg, #3b82f6, #1d4ed8);
    height: 4px;
    border-radius: 2px;
    transition: width 0.3s ease;
}

/* Responsive design improvements */
@media (max-width: 768px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    h1 {
        font-size: 1.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .grid-cols-3 {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .bg-blue-50 {
        background-color: #1e293b;
    }
    
    .text-gray-800 {
        color: #f1f5f9;
    }
    
    .text-gray-600 {
        color: #cbd5e1;
    }
    
    .bg-white {
        background-color: #334155;
    }
    
    .border-gray-300 {
        border-color: #475569;
    }
}

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

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

::-webkit-scrollbar-thumb {
    background: #3b82f6;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #1d4ed8;
}

/* Utility classes */
.text-gradient {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.backdrop-blur {
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

/* Error states */
.error {
    border-color: #ef4444 !important;
    background-color: #fef2f2 !important;
}

.error-message {
    color: #ef4444;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* Success states */
.success {
    border-color: #10b981 !important;
    background-color: #f0fdf4 !important;
}

/* Video thumbnail */
.video-thumbnail {
    aspect-ratio: 16/9;
    object-fit: cover;
    border-radius: 8px;
}

/* Download card */
.download-card {
    background: linear-gradient(135deg, #ffffff, #f8fafc);
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
}

.download-card:hover {
    border-color: #3b82f6;
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.1);
}

/* Loading states */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}