/* ====================================================================
   Lunovia Groups — Motion & Optical Blur System
   Cinematic Reveals • Optical Defocus • Reduced Motion Support
   ==================================================================== */

/* Scroll-driven Crisp Cinematic Reveals */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(22px);
    transition: 
        opacity 650ms var(--ease-gentle),
        transform 800ms var(--ease-cinematic);
}

.reveal-on-scroll.is-revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger Delays */
.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }
.delay-400 { transition-delay: 400ms; }
.delay-500 { transition-delay: 500ms; }
.delay-600 { transition-delay: 600ms; }

/* Opening Sequence Controller Elements */
.opening-curtain {
    position: fixed;
    inset: 0;
    z-index: var(--z-opening);
    background-color: var(--curtain-bg);
    color: var(--text-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    transition: opacity 900ms var(--ease-cinematic), transform 900ms var(--ease-cinematic);
}

.opening-curtain.is-completed {
    opacity: 0;
    visibility: hidden;
}

.opening-mark {
    width: 64px;
    height: 64px;
    opacity: 0;
    transform: scale(0.92);
    animation: openingMarkSequence 1800ms var(--ease-cinematic) forwards;
}

@keyframes openingMarkSequence {
    0% {
        opacity: 0;
        transform: scale(0.9);
        filter: blur(12px);
    }
    40% {
        opacity: 1;
        transform: scale(1);
        filter: blur(0px);
    }
    80% {
        opacity: 0.9;
        transform: scale(1.02);
    }
    100% {
        opacity: 0;
        transform: scale(1.08);
        filter: blur(8px);
    }
}

/* Hero Background Optical Reveal */
.hero-atmosphere {
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
}

.hero-atmosphere-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 30%;
    transform: scale(1.08);
    filter: blur(14px);
    transition: filter 2200ms var(--ease-cinematic), transform 2400ms var(--ease-cinematic), opacity var(--duration-normal);
}

[data-theme="dark"] .hero-atmosphere-img {
    opacity: 0.52;
}

[data-theme="light"] .hero-atmosphere-img {
    opacity: 0.16;
    mix-blend-mode: multiply;
    filter: contrast(1.2) brightness(1.02);
}

.hero-loaded .hero-atmosphere-img {
    filter: none;
    transform: scale(1.01);
}

.hero-atmosphere-scrim {
    position: absolute;
    inset: 0;
    background: var(--hero-scrim);
    pointer-events: none;
}

/* Hero Typography Stagger */
.hero-text-stage {
    opacity: 0;
    transform: translateY(32px);
    filter: blur(10px);
    transition: opacity 1200ms var(--ease-cinematic), transform 1200ms var(--ease-cinematic), filter 1400ms var(--ease-cinematic);
}

/* filter: none (not blur(0)) so no permanent filter layer remains after the reveal.
   translateY(0) is kept on purpose to preserve the stacking context. */
.hero-loaded .hero-text-stage {
    opacity: 1;
    transform: translateY(0);
    filter: none;
}

/* Accessible Reduced-Motion Mode */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .reveal-on-scroll {
        opacity: 1 !important;
        filter: none !important;
        transform: none !important;
    }

    .opening-curtain {
        display: none !important;
    }

    .hero-atmosphere-img {
        filter: none !important;
        transform: none !important;
    }

    .hero-text-stage {
        opacity: 1 !important;
        transform: none !important;
        filter: none !important;
    }
}