/* Custom styles to complement Tailwind CSS */

/* Smooth transitions for all interactive elements */
* {
    transition: all 0.3s ease;
}

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

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Enhanced drop zone animations */
#dropZone {
    transition: all 0.3s ease;
}

#dropZone:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

/* Conversion option hover effects */
.conversion-option {
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.conversion-option:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.conversion-option::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.5s;
}

.conversion-option:hover::before {
    left: 100%;
}

/* Button animations */
button {
    position: relative;
    overflow: hidden;
}

button:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Progress bar animation */
#progressBar {
    background: linear-gradient(90deg, #3b82f6, #8b5cf6);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% {
        background-position: -200px 0;
    }
    100% {
        background-position: calc(200px + 100%) 0;
    }
}

/* Feature cards animation */
.grid > div {
    transition: all 0.3s ease;
}

.grid > div:hover {
    transform: translateY(-5px);
}

/* Header shadow on scroll */
header {
    transition: box-shadow 0.3s ease;
}

.header-scrolled {
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

/* Loading animation for file upload */
.loading {
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #3b82f6;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Success animation */
.success-bounce {
    animation: bounce 0.6s ease-in-out;
}

@keyframes bounce {
    0%, 20%, 60%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    80% {
        transform: translateY(-5px);
    }
}

/* Gradient text effect */
.gradient-text {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Mobile optimizations */
@media (max-width: 768px) {
    #dropZone {
        padding: 2rem 1rem;
    }
    
    .conversion-option {
        padding: 1rem;
    }
    
    .grid {
        gap: 1rem;
    }
}

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

/* Print styles */
@media print {
    header,
    footer,
    #dropZone,
    #conversionOptions,
    #convertSection,
    #progressSection,
    #downloadSection {
        display: none;
    }
}

/* Dark mode support (optional) */
@media (prefers-color-scheme: dark) {
    /* Add dark mode styles if needed */
}

/* Reduced motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}