/**
 * Loading Overlay Component
 * Linear-style centered loading screen with logo and message
 */

.loading-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: hsl(var(--color-semantic-background));
    opacity: 1;
    visibility: visible;
    transition: opacity var(--transition-duration-slow) var(--transition-easing-out),
                visibility var(--transition-duration-slow) var(--transition-easing-out);
}

.loading-overlay.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

/* Start hidden, show with .visible class (for login flow) */
.loading-overlay.start-hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-overlay.start-hidden.visible {
    opacity: 1;
    visibility: visible;
}

.loading-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-4);
}

.loading-logo {
    width: 48px;
    height: 48px;
    mix-blend-mode: multiply;
    animation: loading-pulse 2s ease-in-out infinite;
}

.loading-message {
    font-family: var(--font-family-sans);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    margin: 0;
}

@keyframes loading-pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(0.96);
    }
}