/* Preloader and Connection Check Styles */
/* Note: This file should be loaded after variables.css to use global color variables */

/* Hide content while loading */
body.loading {
    overflow: hidden;
}

body.loading .main-content,
body.loading .wrapper,
body.loading .form-container-wrapper,
body.loading footer,
body.loading header,
body.loading nav,
body.loading .progress-wrap,
body.loading .navbar,
body.loading .app-sidebar {
    opacity: 0;
    visibility: hidden;
}

/* Preloader Container - Always on top */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-primary-light) 100%);
    backdrop-filter: blur(10px); /* Add blur effect to everything behind */
    -webkit-backdrop-filter: blur(10px); /* Safari support */
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 99999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

/* Hide preloader when not needed */
#preloader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

/* Smooth content reveal */
body.loaded .main-content,
body.loaded .wrapper,
body.loaded .form-container-wrapper,
body.loaded footer,
body.loaded header,
body.loaded nav,
body.loaded .progress-wrap,
body.loaded .navbar,
body.loaded .app-sidebar {
    animation: fadeIn 0.5s ease forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        visibility: hidden;
    }
    to {
        opacity: 1;
        visibility: visible;
    }
}

/* Spinner Animation */
.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.2);
    border-top-color: var(--white);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Spinner rotation keyframes */
@keyframes spin {
    to { 
        transform: rotate(360deg); 
    }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .spinner {
        width: 40px;
        height: 40px;
        border-width: 3px;
    }
}

/* Ensure preloader is above all other elements */
#preloader * {
    box-sizing: border-box;
}

/* Ensure preloader covers everything */
#preloader {
    isolation: isolate;
}

/* No-JavaScript Fallback */
noscript #preloader {
    display: none !important;
}

noscript body.loading .main-content,
noscript body.loading .wrapper {
    opacity: 1 !important;
    visibility: visible !important;
}