/* Modern Style with Glassmorphism and Bold Accents */
:root {
    /* Color Scheme */
    --primary: #6366f1;     /* Indigo */
    --primary-light: #818cf8;
    --secondary: #f43f5e;   /* Rose */
    --dark: #0f172a;        /* Slate 900 */
    --light: #f8fafc;       /* Slate 50 */
    --success: #10b981;     /* Emerald 500 */
    --warning: #f59e0b;     /* Amber 500 */
    --error: #ef4444;       /* Red 500 */
    
    /* Glass Effect */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary), var(--primary-light));
    --gradient-dark: linear-gradient(135deg, var(--dark), #1e293b);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-full: 9999px;
}

/* Base Styles */
body {
    background: var(--gradient-dark);
    color: var(--light);
    font-family: 'Inter', -apple-system, sans-serif;
    min-height: 100vh;
    line-height: 1.6;
}

/* Glass Container */
.glass-container {
    background: var(--glass-bg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: var(--radius-md);
}

/* Modern Cards */
.card {
    background: var(--glass-bg);
    backdrop-filter: blur(8px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

/* Image Thumbnails */
.image-thumbnail {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: var(--radius-sm);
    transition: transform 0.3s ease;
}

.image-thumbnail:hover {
    transform: scale(1.02);
}

/* Modern Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    border: none;
    font-weight: 500;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    backdrop-filter: blur(4px);
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--light);
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Modern Form Elements */
.form-control {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    padding: 1rem 1.5rem;
    color: var(--light);
    transition: all 0.3s ease;
}

.form-control:focus {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

/* Modern Modals */
.modal-content {
    background: var(--dark);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
}

.modal-header {
    border-bottom: 1px solid var(--glass-border);
    padding: var(--spacing-md);
}

.modal-body {
    padding: var(--spacing-lg);
}

/* Slideshow Controls */
.carousel-control-prev,
.carousel-control-next {
    width: 50px;
    height: 50px;
    background: var(--glass-bg);
    border-radius: var(--radius-full);
    border: 1px solid var(--glass-border);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.carousel:hover .carousel-control-prev,
.carousel:hover .carousel-control-next {
    opacity: 1;
}

/* Thumbnail Gallery */
.thumb-container {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.download-thumb {
    position: absolute;
    bottom: var(--spacing-sm);
    right: var(--spacing-sm);
    background: var(--glass-bg);
    border-radius: var(--radius-full);
    padding: 0.5rem;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.thumb-container:hover .download-thumb {
    opacity: 1;
}

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

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: var(--radius-full);
}

/* Loading Animation */
@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.7; }
    100% { transform: scale(1); opacity: 1; }
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    margin: -20px 0 0 -20px;
    border: 3px solid var(--primary);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Grid Layout */
.image-grid {
    display: grid;
    gap: var(--spacing-md);
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    padding: var(--spacing-md);
}

/* Modern Checkbox */
.form-check-input {
    width: 1.5rem;
    height: 1.5rem;
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.3s ease;
}

.form-check-input:checked {
    background-color: var(--primary);
    border-color: var(--primary);
    animation: pulse 0.3s ease;
}

/* Floating Action Buttons */
.fab {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.fab:hover {
    transform: translateY(-3px) rotate(90deg);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.5);
}

/* Hover Effects */
.hover-lift {
    transition: transform 0.3s ease;
}

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

/* Text Gradients */
.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 1.5rem;
        --radius-lg: 1rem;
    }

    .image-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }

    .modal-dialog {
        margin: var(--spacing-sm);
    }

    .fab {
        bottom: var(--spacing-md);
        right: var(--spacing-md);
    }
}

/* Dark Mode Enhancement */
@media (prefers-color-scheme: dark) {
    :root {
        --glass-bg: rgba(0, 0, 0, 0.2);
        --glass-border: rgba(255, 255, 255, 0.1);
    }
}