/* ============================================
   MODERN BLUR LOADING SYSTEM v2.0
   /include_areas/modern-blur/modern-blur.css
   ============================================ */

/* ========== CSS VARIABLES ========== */
:root {
    --blur-bg-start: #f8fafc;
    --blur-bg-mid: #e2e8f0;
    --blur-bg-end: #f1f5f9;
    --blur-intensity: 20px;
    --blur-duration: 0.8s;
    --blur-timing: cubic-bezier(0.4, 0, 0.2, 1);
    --container-radius: 12px;
}

/* ========== ОСНОВНОЙ КОНТЕЙНЕР ========== */
.modern-blur-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    background: linear-gradient(
        135deg, 
        var(--blur-bg-start) 0%, 
        var(--blur-bg-mid) 25%, 
        var(--blur-bg-end) 50%, 
        var(--blur-bg-mid) 75%, 
        var(--blur-bg-start) 100%
    );
    background-size: 400% 400%;
    border-radius: var(--container-radius);
    animation: blur-gradient-flow 3s ease infinite;
    will-change: background-position;
}

/* Анимация фона контейнера */
@keyframes blur-gradient-flow {
    0%, 100% { 
        background-position: 0% 50%;
        opacity: 0.95;
    }
    50% { 
        background-position: 100% 50%;
        opacity: 1;
    }
}

/* ========== ИЗОБРАЖЕНИЯ ========== */
.modern-blur-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    filter: blur(var(--blur-intensity)) brightness(1.05);
    transform: scale(1.03);
    transition: all var(--blur-duration) var(--blur-timing);
    will-change: opacity, filter, transform;
    border-radius: var(--container-radius);
}

/* Состояния загрузки */
.modern-blur-img.is-loading {
    opacity: 0.35;
    filter: blur(calc(var(--blur-intensity) * 0.6)) brightness(1.02);
}

.modern-blur-img.is-loaded {
    opacity: 1;
    filter: blur(0) brightness(1);
    transform: scale(1);
    animation: blur-image-reveal 0.5s var(--blur-timing);
}

/* Анимация появления */
@keyframes blur-image-reveal {
    0% {
        opacity: 0.4;
        filter: blur(10px);
        transform: scale(1.01);
    }
    100% {
        opacity: 1;
        filter: blur(0);
        transform: scale(1);
    }
}

/* ========== SHIMMER EFFECT ========== */
.modern-blur-shimmer {
    position: absolute;
    top: 0;
    left: -100%;
    width: 60%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.4),
        rgba(255, 255, 255, 0.7),
        rgba(255, 255, 255, 0.4),
        transparent
    );
    animation: blur-shimmer-wave 2s infinite;
    z-index: 2;
    pointer-events: none;
}

@keyframes blur-shimmer-wave {
    0% { 
        transform: translateX(-100%);
        opacity: 0.3;
    }
    50% {
        opacity: 0.8;
    }
    100% { 
        transform: translateX(250%);
        opacity: 0.3;
    }
}

/* Убираем shimmer после загрузки */
.modern-blur-container.is-loaded .modern-blur-shimmer {
    display: none;
}

/* ========== ERROR STATE ========== */
.modern-blur-img.has-error {
    opacity: 1;
    filter: blur(0);
    background: linear-gradient(135deg, 
        var(--blur-bg-start), 
        var(--blur-bg-mid)
    );
    display: flex;
    align-items: center;
    justify-content: center;
}

.modern-blur-img.has-error::before {
    content: '📷';
    font-size: 24px;
    opacity: 0.5;
    animation: blur-error-pulse 2s infinite;
}

@keyframes blur-error-pulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.7; }
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
    :root {
        --blur-intensity: 15px;
        --container-radius: 8px;
    }
    
    .modern-blur-container {
        animation-duration: 2s;
    }
}

/* ========== DARK MODE SUPPORT ========== */
@media (prefers-color-scheme: dark) {
    :root {
        --blur-bg-start: #1a202c;
        --blur-bg-mid: #2d3748;
        --blur-bg-end: #4a5568;
    }
    
    .modern-blur-shimmer {
        background: linear-gradient(
            90deg,
            transparent,
            rgba(255, 255, 255, 0.1),
            rgba(255, 255, 255, 0.2),
            rgba(255, 255, 255, 0.1),
            transparent
        );
    }
}