/**
 * ThikSeLagao — unified page loader
 */
:root {
    --site-loader-brand: #4d5b75;
    --site-loader-accent: #6366f1;
    --site-loader-accent-soft: #818cf8;
    --site-loader-track: #e2e8f0;
}

.site-page-loader {
    position: fixed;
    inset: 0;
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: opacity 0.35s ease, visibility 0.35s ease;
}

.site-page-loader.is-hidden,
.site-page-loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.site-page-loader.is-removed {
    display: none;
}

.site-loader {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    text-align: center;
    padding: 8px 16px;
}

.site-loader--centered {
    padding: 28px 16px;
}

.site-loader-copy {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
}

.site-loader-text {
    margin: 0;
    font-size: 0.9375rem;
    font-weight: 600;
    color: #334155;
    letter-spacing: 0.02em;
    font-family: Inter, 'Segoe UI', system-ui, sans-serif;
}

.site-loader-sub {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    color: #94a3b8;
    font-family: Inter, 'Segoe UI', system-ui, sans-serif;
}

.site-loader-ellipsis::after {
    content: '';
    animation: siteLoaderEllipsis 1.4s steps(4, end) infinite;
}

@keyframes siteLoaderEllipsis {
    0% { content: ''; }
    25% { content: '.'; }
    50% { content: '..'; }
    75% { content: '...'; }
}

/* Dual-ring spinner */
.site-loader-spinner {
    position: relative;
    width: 46px;
    height: 46px;
    flex-shrink: 0;
}

.site-loader-spinner::before,
.site-loader-spinner::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 3px solid transparent;
}

.site-loader-spinner::before {
    border-top-color: var(--site-loader-accent);
    border-right-color: var(--site-loader-accent-soft);
    animation: siteLoaderSpin 0.85s cubic-bezier(0.55, 0.15, 0.35, 0.85) infinite;
}

.site-loader-spinner::after {
    inset: 7px;
    border-bottom-color: var(--site-loader-brand);
    border-left-color: #94a3b8;
    animation: siteLoaderSpin 1.15s cubic-bezier(0.55, 0.15, 0.35, 0.85) infinite reverse;
}

.site-loader-spinner--sm {
    width: 22px;
    height: 22px;
}

.site-loader-spinner--sm::before,
.site-loader-spinner--sm::after {
    border-width: 2px;
}

.site-loader-spinner--sm::after {
    inset: 4px;
}

@keyframes siteLoaderSpin {
    to {
        transform: rotate(360deg);
    }
}

.site-loader--compact .site-loader-sub {
    display: none;
}

.site-loader--compact .site-loader-text {
    font-size: 0.8125rem;
    font-weight: 500;
    color: #64748b;
}

.site-loader--compact {
    gap: 14px;
}

/* AdminLTE */
.preloader {
    background-color: rgba(255, 255, 255, 0.92) !important;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.preloader .site-loader-sub {
    display: none;
}

@media (prefers-reduced-motion: reduce) {
    .site-loader-spinner::before,
    .site-loader-spinner::after,
    .site-loader-ellipsis::after {
        animation: none !important;
    }

    .site-loader-spinner::before {
        border-top-color: var(--site-loader-accent);
        border-right-color: var(--site-loader-accent-soft);
        transform: rotate(45deg);
    }
}