/**
 * Lazy Loading CSS Styles
 * Performans odaklı görsel yükleme stilleri
 */

/* Temel lazy loading sınıfları */
.lazy-placeholder {
    background-color: #f3f4f6;
    background-image: 
        linear-gradient(45deg, transparent 40%, rgba(255,255,255,0.5) 50%, transparent 60%),
        linear-gradient(90deg, #e5e7eb 25%, transparent 25%, transparent 75%, #e5e7eb 75%);
    background-size: 20px 20px, 40px 40px;
    background-position: 0 0, 0 0;
    animation: lazy-shimmer 1.5s ease-in-out infinite;
    position: relative;
    overflow: hidden;
}

.lazy-loading {
    position: relative;
}

.lazy-loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    animation: lazy-loading-sweep 1.5s ease-in-out infinite;
    z-index: 1;
}

.lazy-loaded {
    animation: lazy-fade-in 0.4s ease-in-out;
}

.lazy-error {
    background-color: #fef2f2;
    border: 2px dashed #fca5a5;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #dc2626;
    font-size: 0.875rem;
    min-height: 100px;
}

.lazy-error::before {
    content: '⚠️ Görsel yüklenemedi';
    text-align: center;
}

/* Animasyonlar */
@keyframes lazy-shimmer {
    0% {
        background-position: -200px 0, 0 0;
    }
    100% {
        background-position: 200px 0, 0 0;
    }
}

@keyframes lazy-loading-sweep {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

@keyframes lazy-fade-in {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Responsive görsel stilleri */
.lazy-image {
    width: 100%;
    height: auto;
    display: block;
    transition: opacity 0.3s ease-in-out, transform 0.3s ease-in-out;
}

.lazy-image.lazy-placeholder {
    min-height: 200px;
    background-size: cover;
    background-position: center;
}

.lazy-image.lazy-loading {
    opacity: 0.7;
}

.lazy-image.lazy-loaded {
    opacity: 1;
}

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

/* Background image lazy loading */
.lazy-bg {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    transition: background-image 0.3s ease-in-out;
}

.lazy-bg.lazy-placeholder {
    background-color: #f3f4f6;
    background-image: 
        radial-gradient(circle at 30% 30%, #e5e7eb 2px, transparent 2px),
        radial-gradient(circle at 70% 70%, #d1d5db 1px, transparent 1px);
    background-size: 20px 20px, 15px 15px;
    animation: lazy-pulse 2s ease-in-out infinite;
}

/* Video ve iframe lazy loading */
.lazy-video,
.lazy-iframe {
    width: 100%;
    height: auto;
    border: none;
    transition: opacity 0.3s ease-in-out;
    opacity: 0;
    position: relative;
}

.lazy-video.lazy-placeholder,
.lazy-iframe.lazy-placeholder {
    background-color: #1f2937;
    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%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #9ca3af;
    font-size: 0.875rem;
}

.lazy-video.lazy-loading::before,
.lazy-iframe.lazy-loading::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border: 3px solid #9ca3af;
    border-top: 3px solid transparent;
    border-radius: 50%;
    animation: lazy-spin 1s linear infinite;
    z-index: 1;
}

.lazy-video.lazy-loading::after {
    content: '📹';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2rem;
    margin-top: 60px;
    color: #9ca3af;
}

.lazy-iframe.lazy-loading::after {
    content: '🌐';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2rem;
    margin-top: 60px;
    color: #9ca3af;
}

.lazy-video.lazy-placeholder::before,
.lazy-iframe.lazy-placeholder::before {
    content: '▶️ Video yükleniyor...';
    text-align: center;
}

.lazy-video.lazy-loaded,
.lazy-iframe.lazy-loaded {
    opacity: 1;
}

@keyframes lazy-spin {
    0% {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    100% {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

/* Özel placeholder türleri */
.lazy-placeholder-blog {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 250px;
    font-size: 1rem;
    font-weight: 500;
}

.lazy-placeholder-blog::before {
    content: '📝 Blog görseli yükleniyor...';
}

.lazy-placeholder-avatar {
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    border-radius: 50%;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.lazy-placeholder-avatar::before {
    content: '👤';
}

.lazy-placeholder-gallery {
    background: linear-gradient(45deg, #ff9a9e 0%, #fecfef 50%, #fecfef 100%);
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #6b7280;
    font-size: 0.875rem;
}

.lazy-placeholder-gallery::before {
    content: '🖼️ Galeri';
}

/* Responsive tasarım */
@media (max-width: 768px) {
    .lazy-image.lazy-placeholder {
        min-height: 150px;
    }
    
    .lazy-video.lazy-placeholder,
    .lazy-iframe.lazy-placeholder {
        min-height: 150px;
        font-size: 0.75rem;
    }
    
    .lazy-placeholder-blog {
        min-height: 200px;
        font-size: 0.875rem;
    }
}

@media (max-width: 480px) {
    .lazy-image.lazy-placeholder {
        min-height: 120px;
    }
    
    .lazy-video.lazy-placeholder,
    .lazy-iframe.lazy-placeholder {
        min-height: 120px;
    }
    
    .lazy-placeholder-blog {
        min-height: 150px;
        font-size: 0.75rem;
    }
}

/* Dark mode desteği */
@media (prefers-color-scheme: dark) {
    .lazy-placeholder {
        background-color: #374151;
        background-image: 
            linear-gradient(45deg, transparent 40%, rgba(255,255,255,0.1) 50%, transparent 60%),
            linear-gradient(90deg, #4b5563 25%, transparent 25%, transparent 75%, #4b5563 75%);
    }
    
    .lazy-bg.lazy-placeholder {
        background-color: #374151;
        background-image: 
            radial-gradient(circle at 30% 30%, #4b5563 2px, transparent 2px),
            radial-gradient(circle at 70% 70%, #6b7280 1px, transparent 1px);
    }
    
    .lazy-error {
        background-color: #450a0a;
        border-color: #dc2626;
        color: #fca5a5;
    }
}

/* Print stilleri */
@media print {
    .lazy-placeholder,
    .lazy-loading {
        background: none !important;
        animation: none !important;
    }
    
    .lazy-placeholder::after,
    .lazy-loading::after {
        display: none !important;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    .lazy-placeholder,
    .lazy-loading::after,
    .lazy-loaded,
    .lazy-image {
        animation: none !important;
        transition: none !important;
    }
}

/* Performance optimizations */
.lazy-container {
    contain: layout style paint;
}

.lazy-image,
.lazy-bg {
    will-change: opacity, transform;
}

.lazy-loaded {
    will-change: auto;
}