/**
 * Loading Overlay Component
 * Full-screen loading overlay for dashboard initialization
 * 
 * NOTE: This CSS is for dynamically created overlays by LoadingOverlayManager.
 * Static #loadingOverlay elements are styled in common.css
 */

/* Only apply to dynamically created overlays, not static #loadingOverlay */
.loading-overlay:not(#loadingOverlay) {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-rich-black);
    display: none; /* Hidden by default - must be shown via JavaScript */
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    transition: opacity 0.3s ease-out;
    pointer-events: none;
}

/* Active state - shown via JavaScript */
.loading-overlay.active {
    display: flex;
    opacity: 1;
    pointer-events: auto;
}

/* Fade-out for dynamically created overlays only */
.loading-overlay:not(#loadingOverlay).fade-out {
    opacity: 0;
    pointer-events: none;
}

.loading-overlay__content {
    text-align: center;
    color: var(--color-white);
}

.loading-overlay__logo {
    width: 120px;
    height: 120px;
    margin-bottom: var(--spacing-6);
    animation: pulse 2s ease-in-out infinite;
}

.loading-overlay__spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--color-white);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-4);
}

.loading-overlay__text {
    font-size: 1.125rem;
    font-weight: 500;
    margin-bottom: var(--spacing-2);
    color: var(--color-white);
}

.loading-overlay__subtext {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
    margin-top: var(--spacing-2);
}

.loading-overlay__progress {
    margin-top: var(--spacing-4);
    width: 300px;
    max-width: 90%;
}

.loading-overlay__progress-bar {
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    overflow: hidden;
}

.loading-overlay__progress-fill {
    height: 100%;
    background: var(--color-white);
    border-radius: 2px;
    transition: width 0.3s ease-out;
    width: 0%;
}

/* Animations */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.05); }
}

/* Loading stages */
.loading-overlay__stages {
    margin-top: var(--spacing-6);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
    align-items: flex-start;
    min-width: 250px;
}

.loading-overlay__stage {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
    transition: color 0.3s ease;
}

.loading-overlay__stage.active {
    color: var(--color-white);
}

.loading-overlay__stage.complete {
    color: var(--color-success);
}

.loading-overlay__stage-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.loading-overlay__stage-icon::before {
    content: '○';
    font-size: 1.2rem;
}

.loading-overlay__stage.active .loading-overlay__stage-icon::before {
    content: '◉';
    animation: pulse 1s ease-in-out infinite;
}

.loading-overlay__stage.complete .loading-overlay__stage-icon::before {
    content: '✓';
}

/* Error state - for dynamically created overlays only */
.loading-overlay:not(#loadingOverlay).error {
    background: var(--color-error);
}

.loading-overlay__error {
    margin-top: var(--spacing-4);
    padding: var(--spacing-4);
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    max-width: 400px;
}

.loading-overlay__error-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-2);
}

.loading-overlay__error-message {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-3);
}

.loading-overlay__error-actions {
    display: flex;
    gap: var(--spacing-3);
    justify-content: center;
}

.loading-overlay__retry-btn {
    padding: var(--spacing-2) var(--spacing-4);
    background: var(--color-white);
    color: var(--color-error);
    border: none;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.loading-overlay__retry-btn:hover {
    transform: translateY(-1px);
    opacity: 0.9;
}

.loading-overlay__logout-btn {
    padding: var(--spacing-2) var(--spacing-4);
    background: rgba(255, 255, 255, 0.2);
    color: var(--color-white);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s ease;
}

.loading-overlay__logout-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}