/**
 * SEO Repair Kit - Page Loader Styles
 * 
 * Light, modern loader that appears when page loading takes time.
 * Only shows if loading exceeds threshold to avoid flicker.
 * 
 * @since 2.1.0
 */

/* Loader Overlay */
.srk-page-loader-overlay {
    position: fixed;
    /* Exclude WordPress admin sidebar and header */
    top: 32px; /* WordPress admin bar height */
    left: 160px; /* WordPress admin sidebar width (default) */
    width: calc(100% - 160px); /* Full width minus sidebar */
    height: calc(100% - 32px); /* Full height minus admin bar */
    min-height: calc(100vh - 32px);
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    z-index: 999999;
    display: none;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    pointer-events: all;
}

/* Adjust for collapsed WordPress admin sidebar */
body.folded .srk-page-loader-overlay,
.folded .srk-page-loader-overlay {
    left: 36px; /* Collapsed sidebar width */
    width: calc(100% - 36px);
}

/* Adjust for mobile/tablet WordPress admin bar */
@media screen and (max-width: 782px) {
    .srk-page-loader-overlay {
        top: 46px; /* Mobile admin bar height */
        left: 0; /* No sidebar on mobile */
        width: 100%;
        height: calc(100% - 46px);
        min-height: calc(100vh - 46px);
    }
}

/* Loader Container */
.srk-page-loader-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

/* Spinner Animation */
.srk-page-loader-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #0B1D51;
    border-radius: 50%;
    animation: srk-spin 1s linear infinite;
}

@keyframes srk-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Loader Text */
.srk-page-loader-text {
    color: #0B1D51;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin: 0;
}

/* Pulse Animation for Text */
.srk-page-loader-text {
    animation: srk-pulse 2s ease-in-out infinite;
}

@keyframes srk-pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.6;
    }
}

/* Active state - show loader */
.srk-page-loader-overlay.active {
    display: flex;
    opacity: 1;
    visibility: visible;
}

/* Hide loader when page is fully loaded */
body.srk-page-loaded .srk-page-loader-overlay {
    opacity: 0;
    visibility: hidden;
    display: none !important;
}

/* Ensure loader is above WordPress admin elements */
body.wp-admin .srk-page-loader-overlay {
    z-index: 999999;
}

/* Responsive adjustments */
@media (max-width: 782px) {
    .srk-page-loader-spinner {
        width: 40px;
        height: 40px;
        border-width: 3px;
    }
    
    .srk-page-loader-text {
        font-size: 12px;
    }
}