/* Custom Styles for AI Background Remover */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    overflow-x: hidden;
}

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

/* Upload Zone Hover Effect */
.upload-zone:hover {
    transform: scale(1.02);
    box-shadow: 0 20px 25px -5px rgba(99, 102, 241, 0.1);
}

.upload-zone.drag-over {
    border-color: #4f46e5;
    background-color: rgba(99, 102, 241, 0.05);
}

/* Checkered Background for Transparency */
.bg-checkered {
    background-image: 
        linear-gradient(45deg, #e5e7eb 25%, transparent 25%),
        linear-gradient(-45deg, #e5e7eb 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #e5e7eb 75%),
        linear-gradient(-45deg, transparent 75%, #e5e7eb 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

.dark .bg-checkered {
    background-image: 
        linear-gradient(45deg, #374151 25%, transparent 25%),
        linear-gradient(-45deg, #374151 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #374151 75%),
        linear-gradient(-45deg, transparent 75%, #374151 75%);
}

/* Spinner Animation */
.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Background Option Buttons */
.bg-option {
    width: 48px;
    height: 48px;
    border: 2px solid #d1d5db;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.dark .bg-option {
    border-color: #4b5563;
}

.bg-option:hover {
    transform: scale(1.1);
    border-color: #6366f1;
}

.bg-option.active {
    border-color: #6366f1;
    border-width: 3px;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.bg-option[data-bg="transparent"] {
    background-image: 
        linear-gradient(45deg, #e5e7eb 25%, transparent 25%),
        linear-gradient(-45deg, #e5e7eb 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #e5e7eb 75%),
        linear-gradient(-45deg, transparent 75%, #e5e7eb 75%);
    background-size: 10px 10px;
    background-position: 0 0, 0 5px, 5px -5px, -5px 0px;
}

/* Feature Cards Animation */
.feature-card {
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

/* Details/Accordion */
details summary {
    list-style: none;
    position: relative;
    padding-right: 2rem;
}

details summary::-webkit-details-marker {
    display: none;
}

details summary::after {
    content: '+';
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.5rem;
    font-weight: bold;
    transition: transform 0.3s ease;
}

details[open] summary::after {
    transform: translateY(-50%) rotate(45deg);
}

/* Toast Notifications */
.toast {
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 300px;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast.success {
    background-color: #10b981;
    color: white;
}

.toast.error {
    background-color: #ef4444;
    color: white;
}

.toast.info {
    background-color: #3b82f6;
    color: white;
}

.toast.warning {
    background-color: #f59e0b;
    color: white;
}

/* Responsive Images */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

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

.dark ::-webkit-scrollbar-track {
    background: #1f2937;
}

::-webkit-scrollbar-thumb {
    background: #6366f1;
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #4f46e5;
}

/* Loading State */
.loading {
    pointer-events: none;
    opacity: 0.6;
}

/* Fade In Animation */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .upload-zone {
        padding: 2rem 1rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .toast {
        min-width: 250px;
    }
}

/* Print Styles */
@media print {
    header, footer, #toast-container {
        display: none;
    }
}

/* Accessibility - Focus Styles */
button:focus,
input:focus,
select:focus {
    outline: 2px solid #6366f1;
    outline-offset: 2px;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}
/* Enhanced Drag and Drop Styles */
.upload-zone {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.upload-zone::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.upload-zone:hover::before {
    opacity: 1;
}

.upload-zone.drag-over {
    border-color: #4f46e5 !important;
    background-color: rgba(99, 102, 241, 0.1) !important;
    transform: scale(1.02);
    box-shadow: 0 20px 25px -5px rgba(99, 102, 241, 0.3),
                0 10px 10px -5px rgba(99, 102, 241, 0.2);
}

.upload-zone.drag-over::before {
    opacity: 1;
}

.upload-zone.drag-over i {
    transform: scale(1.2);
    color: #4f46e5;
}

/* Toast animation fix */
.toast {
    transition: opacity 0.3s ease;
}