/**
 * Page loader + lazy load styles
 * Applied across all client pages
 */

/* Page loader overlay */
#page-loader {
    position: fixed;
    inset: 0;
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0E54AE 0%, #0a3d7a 50%, #062854 100%);
    transition: opacity 0.5s ease, visibility 0.5s ease;
    pointer-events: none;
}

#page-loader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.page-loader__inner {
    text-align: center;
    color: #fff;
}

.page-loader__rings {
    position: relative;
    width: 80px;
    height: 80px;
    margin: 0 auto 1.25rem;
}

.page-loader__ring {
    position: absolute;
    inset: 0;
    border: 3px solid transparent;
    border-top-color: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    animation: page-loader-spin 0.8s linear infinite;
}

.page-loader__ring:nth-child(2) {
    inset: 6px;
    border-top-color: rgba(255, 255, 255, 0.6);
    animation-duration: 1.2s;
    animation-direction: reverse;
}

.page-loader__ring:nth-child(3) {
    inset: 12px;
    border-top-color: rgba(255, 255, 255, 0.3);
    animation-duration: 1.6s;
}

@keyframes page-loader-spin {
    to { transform: rotate(360deg); }
}

.page-loader__dot {
    width: 12px;
    height: 12px;
    margin: 0 auto 1rem;
    background: #fff;
    border-radius: 50%;
    animation: page-loader-pulse 1.2s ease-in-out infinite;
}

@keyframes page-loader-pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.85); }
}

.page-loader__text {
    font-size: 0.85rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    opacity: 0.9;
}

/* Lazy image placeholder */
img[data-src].lazy-img {
    background: linear-gradient(90deg, #e8e8e8 25%, #f0f0f0 50%, #e8e8e8 75%);
    background-size: 200% 100%;
    animation: lazy-skeleton 1.2s ease-in-out infinite;
    min-height: 120px;
}

img[data-src].lazy-img.loaded {
    background: none;
    animation: none;
}

@keyframes lazy-skeleton {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Lazy-reveal sections */
.lazy-reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.lazy-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

.lazy-reveal-stagger > * {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.lazy-reveal-stagger.revealed > *:nth-child(1) { transition-delay: 0.05s; }
.lazy-reveal-stagger.revealed > *:nth-child(2) { transition-delay: 0.1s; }
.lazy-reveal-stagger.revealed > *:nth-child(3) { transition-delay: 0.15s; }
.lazy-reveal-stagger.revealed > *:nth-child(4) { transition-delay: 0.2s; }
.lazy-reveal-stagger.revealed > *:nth-child(5) { transition-delay: 0.25s; }
.lazy-reveal-stagger.revealed > *:nth-child(6) { transition-delay: 0.3s; }
.lazy-reveal-stagger.revealed > *:nth-child(7) { transition-delay: 0.35s; }
.lazy-reveal-stagger.revealed > *:nth-child(8) { transition-delay: 0.4s; }
.lazy-reveal-stagger.revealed > *:nth-child(9) { transition-delay: 0.45s; }
.lazy-reveal-stagger.revealed > *:nth-child(10) { transition-delay: 0.5s; }

.lazy-reveal-stagger.revealed > * {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    #page-loader, #page-loader.hidden,
    .page-loader__ring, .page-loader__dot,
    .lazy-reveal, .lazy-reveal.revealed,
    .lazy-reveal-stagger > *, .lazy-reveal-stagger.revealed > * {
        transition-duration: 0.01ms !important;
        animation: none !important;
    }
    .lazy-reveal, .lazy-reveal-stagger > * {
        opacity: 1;
        transform: none;
    }
}