/* Base Styles */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-image: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63-21c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3z' fill='%23e2e8f0'/%3E%3C/svg%3E");
    background-size: 200px;
    background-attachment: fixed;
}

/* File Input Styling */
.file-input-container {
    border: 2px dashed #cbd5e1;
    border-radius: 0.5rem;
    transition: all 0.2s ease-in-out;
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.file-input-container:hover, 
.file-input-container.dragover {
    border-color: #4f46e5;
    background-color: #f0f0ff;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.15);
}

.file-input-label {
    cursor: pointer;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

/* Format Selection */
.format-label {
    border: 1px solid #cbd5e1;
    padding: 0.5rem 0.75rem;
    border-radius: 0.375rem;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    text-align: center;
    flex-grow: 1;
    user-select: none;
}

.format-label:hover {
    border-color: #4f46e5;
    background-color: #f8fafc;
}

input[type="radio"]:checked + .format-label {
    background-color: #4f46e5;
    color: white;
    border-color: #4f46e5;
    transform: scale(1.02);
}

/* Date Input Styling */
input[type="date"]::-webkit-calendar-picker-indicator {
    cursor: pointer;
    filter: invert(0.5);
}

input[type="date"]::-webkit-calendar-picker-indicator:hover {
    filter: invert(0.3);
}

/* Color Picker Styling */
.color-picker-input {
    position: absolute;
    opacity: 0;
    top: 0;
    left: 0;
    width: 32px;
    height: 32px;
    cursor: pointer;
}

.color-picker-input:focus + span {
    outline: 2px solid #4f46e5;
    outline-offset: 2px;
}

/* Disabled State Overlay */
.disabled-overlay {
    position: absolute;
    inset: 0;
    background-color: rgba(241, 245, 249, 0.8);
    z-index: 10;
    cursor: not-allowed;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 500;
    color: #64748b;
}

/* Enhanced Button Styles */
button {
    transition: all 0.2s ease-in-out;
}

button:hover:not(:disabled) {
    transform: translateY(-1px);
}

button:active:not(:disabled) {
    transform: translateY(0);
}

/* Range Slider Styling */
input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    height: 8px;
    background: #e2e8f0;
    border-radius: 4px;
    outline: none;
    cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    background: #4f46e5;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.2s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
    background: #3730a3;
    transform: scale(1.1);
}

input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: #4f46e5;
    border-radius: 50%;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
}

input[type="range"]::-moz-range-thumb:hover {
    background: #3730a3;
    transform: scale(1.1);
}

/* Focus States */
input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: #4f46e5;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

/* Loading States */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #e2e8f0;
    border-top: 2px solid #4f46e5;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Responsive Improvements */
@media (max-width: 768px) {
    .file-input-container {
        min-height: 100px;
    }
    
    .format-label {
        padding: 0.375rem 0.5rem;
        font-size: 0.875rem;
    }
    
    .grid-cols-1.md\\:grid-cols-2 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .w-full.max-w-5xl {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    .py-16.md\\:py-20 {
        padding-top: 3rem;
        padding-bottom: 3rem;
    }
    
    .text-4xl.md\\:text-5xl {
        font-size: 2.25rem;
        line-height: 2.5rem;
    }
}

/* Accessibility Improvements */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.sr-only:focus {
    position: static;
    width: auto;
    height: auto;
    padding: 0.5rem 1rem;
    margin: 0;
    overflow: visible;
    clip: auto;
    white-space: normal;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .file-input-container {
        border-width: 3px;
    }
    
    .format-label {
        border-width: 2px;
    }
    
    button {
        border: 2px solid currentColor;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .file-input-container:hover,
    .file-input-container.dragover {
        transform: none;
    }
    
    button:hover:not(:disabled) {
        transform: none;
    }
}

/* Print Styles */
@media print {
    .fixed,
    button,
    input,
    select,
    textarea {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
    
    .bg-white {
        background: white !important;
        border: 1px solid #000 !important;
    }
}

/* Dark Mode Support (if needed in future) */
@media (prefers-color-scheme: dark) {
    /* Dark mode styles can be added here */
}

/* Performance Optimizations */
.file-input-container,
.format-label,
button,
input,
select,
textarea {
    will-change: transform, box-shadow;
}

/* Canvas Optimization */
#canvas {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    image-rendering: pixelated;
}

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

/* Focus Visible */
:focus-visible {
    outline: 2px solid #4f46e5;
    outline-offset: 2px;
}

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

::-webkit-scrollbar-track {
    background: #f1f5f9;
    border-radius: 4px;
}

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

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