/**
 * CSS animace pro postupné načítání bloků
 * Moderní přístup s podporou accessibility
 */

/* Základní fade-in animace */
.fade-in-element {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94), 
               transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.fade-in-element.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Zpoždění pro postupné objevování elementů */
.fade-in-element.delay-1 { transition-delay: 0.1s; }
.fade-in-element.delay-2 { transition-delay: 0.2s; }
.fade-in-element.delay-3 { transition-delay: 0.3s; }
.fade-in-element.delay-4 { transition-delay: 0.4s; } 
.fade-in-element.delay-5 { transition-delay: 0.5s; }

/* Různé typy animací */
.fade-in-element.slide-left {
    transform: translateX(-50px) translateY(0);
}

.fade-in-element.slide-right {
    transform: translateX(50px) translateY(0); 
}

.fade-in-element.scale-up {
    transform: scale(0.8) translateY(0);
}

.fade-in-element.rotate-in {
    transform: rotate(-5deg) scale(0.9) translateY(20px);
}
 
.fade-in-element.slide-up {
    transform: translateY(50px);
} 

.fade-in-element.slide-down { 
    transform: translateY(-50px);
}

/* Viditelné stavy */  
.fade-in-element.visible.slide-left,
.fade-in-element.visible.slide-right {
    transform: translateX(0) translateY(0);
}

.fade-in-element.visible.scale-up {
    transform: scale(1) translateY(0);
}

.fade-in-element.visible.rotate-in {
    transform: rotate(0deg) scale(1) translateY(0);
}

.fade-in-element.visible.slide-up,
.fade-in-element.visible.slide-down {
    transform: translateY(0);
}

/* Speciální animace pro čísla */
.number-counter {
    font-weight: bold;
    color: inherit;
    display: inline-block;
}

/* Animace pro tlačítka */
.fade-in-element.btn-animation {
    transform: translateY(20px) scale(0.95);
}

.fade-in-element.visible.btn-animation {
    transform: translateY(0) scale(1);
}

/* Animace pro obrázky */
.fade-in-element.image-zoom {
    transform: scale(1.1);
    opacity: 0;
}

.fade-in-element.visible.image-zoom {
    transform: scale(1);
    opacity: 1;
}

/* Animace pro karty/boxy */
.fade-in-element.card-flip {
    transform: perspective(1000px) rotateY(15deg) translateY(20px);
    opacity: 0;
}

.fade-in-element.visible.card-flip {
    transform: perspective(1000px) rotateY(0deg) translateY(0);
    opacity: 1;
}

/* Animace pro seznamy */
.fade-in-element.list-item {
    transform: translateX(-30px);
    opacity: 0;
}

.fade-in-element.visible.list-item {
    transform: translateX(0);
    opacity: 1;
}

/* Responzivní úpravy pro mobilní zařízení */
@media (max-width: 768px) {
    .fade-in-element {
        transform: translateY(20px);
        transition-duration: 0.6s;
    }
    
    .fade-in-element.slide-left,
    .fade-in-element.slide-right {
        transform: translateY(20px);
    }
    
    .fade-in-element.rotate-in {
        transform: scale(0.95) translateY(15px);
    }
}

/* Úpravy pro tablety */
@media (max-width: 1024px) and (min-width: 769px) {
    .fade-in-element {
        transition-duration: 0.7s;
    }
}

/* Redukce animací pro uživatele s prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
    .fade-in-element {
        transition: opacity 0.3s ease !important;
        transform: none !important;
    }
    
    .fade-in-element.visible {
        transform: none !important;
    }
}

/* Podpora pro high contrast mode */
@media (prefers-contrast: high) {
    .fade-in-element {
        transition-duration: 0.2s;
    }
}

/* Animace pro loading stavy */
.loading-animation {
    position: relative;
    overflow: hidden;
}

.loading-animation::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    animation: loading-shimmer 1.5s infinite;
}

@keyframes loading-shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* Utility třídy pro rychlé použití */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Speciální efekty pro různé sekce */
.know-how-section .fade-in-element {
    transition-duration: 1s;
}

.numbers-purple-section .fade-in-element {
    transition-timing-function: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.our-work-section .fade-in-element {
    transition-delay: 0.2s;
}

.inquiry-section .step {
    transition-delay: calc(var(--step-index, 0) * 0.1s);
}

/* Hover efekty pro animované elementy */
.fade-in-element.visible:hover {
    transform: translateY(0px);
    transition: transform 0.3s ease;
}

.fade-in-element.visible.scale-up:hover {
    /*transform: scale(1.05) translateY(-2px);*/
}

/* Debug mode - zobrazí všechny animované elementy */
.debug-animations .fade-in-element {
    outline: 2px dashed rgba(255, 0, 0, 0.3);
}

.debug-animations .fade-in-element.visible {
    outline-color: rgba(0, 255, 0, 0.3);
}