/**
 * Loading States and Animations Component
 * Loading spinners, fade-in animations, overlays, and transitions
 */

/* Import variables */
@import '../base/variables.css';

/* Threats Section Positioning */
.threats-section {
    position: relative !important;
}

/* Threat Overlay */
.threat-overlay {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    background: var(--bg-overlay) !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    flex-direction: column !important;
    z-index: var(--z-index-overlay) !important;
    opacity: 0 !important;
    transition: opacity var(--transition-fast) !important;
    border-radius: var(--border-radius-md) !important;
}

.threat-overlay.show {
    opacity: 1 !important;
}

/* Spinner for Overlay */
.threat-overlay .spinner-border {
    width: 3rem !important;
    height: 3rem !important;
    border-width: 0.3em !important;
    color: var(--primary-green) !important;
}

.threat-overlay .loading-text {
    margin-top: var(--spacing-lg) !important;
    font-size: var(--font-size-lg) !important;
    font-weight: var(--font-weight-semibold) !important;
    color: var(--text-primary) !important;
    text-align: center !important;
}

/* Filter Spinner (inline loading) */
.filter-spinner {
    display: inline-block !important;
    margin-left: var(--spacing-sm) !important;
}

.filter-spinner .spinner-border-sm {
    width: 1rem !important;
    height: 1rem !important;
    border-width: 0.1em !important;
    color: var(--primary-green) !important;
}

/* Loading States */
.filters-loading {
    opacity: 0.7 !important;
    pointer-events: none !important;
    transition: opacity var(--transition-fast) !important;
}

.content-loading {
    opacity: 0.6 !important;
    pointer-events: none !important;
    transition: opacity var(--transition-fast) !important;
}

/* Fade In Animation */
@keyframes fadeIn {
    from {
        opacity: 0 !important;
        transform: translateY(var(--spacing-sm)) !important;
    }
    to {
        opacity: 1 !important;
        transform: translateY(0) !important;
    }
}

.fade-in {
    animation: fadeIn var(--transition-medium) !important;
}

/* Loading Skeleton Effects */
.skeleton-loading {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%) !important;
    background-size: 200% 100% !important;
    animation: loading-skeleton 1.5s infinite !important;
    border-radius: var(--border-radius-sm) !important;
}

@keyframes loading-skeleton {
    0% {
        background-position: 200% 0 !important;
    }
    100% {
        background-position: -200% 0 !important;
    }
}

/* Threat Cards Loading State */
.threat-card.loading {
    opacity: 0.5 !important;
    pointer-events: none !important;
    transition: opacity var(--transition-fast) !important;
}

/* Content Loading Overlay */
.content-loading-overlay {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    background: rgba(248, 249, 250, 0.9) !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    z-index: var(--z-index-loading) !important;
    border-radius: var(--border-radius-md) !important;
}

/* Spinner Variants */
.spinner-primary {
    color: var(--primary-green) !important;
}

.spinner-secondary {
    color: #6c757d !important;
}

.spinner-light {
    color: var(--bg-light) !important;
}

.spinner-success {
    color: var(--primary-green) !important;
}

/* Loading Button States */
.btn-loading {
    position: relative !important;
    color: transparent !important;
    pointer-events: none !important;
}

.btn-loading::after {
    content: '' !important;
    position: absolute !important;
    width: 16px !important;
    height: 16px !important;
    top: 50% !important;
    left: 50% !important;
    margin-left: -8px !important;
    margin-top: -8px !important;
    border: 2px solid transparent !important;
    border-top-color: currentColor !important;
    border-radius: var(--border-radius-circle) !important;
    animation: spin 1s linear infinite !important;
}

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

/* Pulse Animation */
.pulse {
    animation: pulse 2s infinite !important;
}

@keyframes pulse {
    0% {
        opacity: 1 !important;
    }
    50% {
        opacity: 0.5 !important;
    }
    100% {
        opacity: 1 !important;
    }
}

/* Loading Transitions */
.loading-transition {
    transition: all var(--transition-fast) !important;
}

.loading-transition.loading {
    transform: scale(0.98) !important;
    opacity: 0.7 !important;
}

/* Shimmer Effect */
.shimmer {
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

/* Loading Dots Animation */
.loading-dots::after {
    content: '';
    animation: loading-dots 1.5s infinite;
}

@keyframes loading-dots {
    0%, 20% {
        content: '.';
    }
    40% {
        content: '..';
    }
    60%, 100% {
        content: '...';
    }
}

/* Progress Bar Loading */
.loading-progress {
    width: 100%;
    height: 4px;
    background: var(--bg-light);
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    position: relative;
}

.loading-progress::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: var(--primary-green);
    border-radius: var(--border-radius-sm);
    animation: loading-progress 2s infinite;
}

@keyframes loading-progress {
    0% {
        width: 0%;
        transform: translateX(-100%);
    }
    50% {
        width: 100%;
        transform: translateX(0%);
    }
    100% {
        width: 100%;
        transform: translateX(100%);
    }
}

/* Mobile Responsive Loading */
@media (max-width: 768px) {
    .threat-overlay .spinner-border {
        width: 2.5rem !important;
        height: 2.5rem !important;
        border-width: 0.25em !important;
    }

    .threat-overlay .loading-text {
        font-size: var(--font-size-md) !important;
        margin-top: var(--spacing-md) !important;
    }

    .filter-spinner {
        margin-left: var(--spacing-xs) !important;
    }

    .btn-loading::after {
        width: 14px !important;
        height: 14px !important;
        margin-left: -7px !important;
        margin-top: -7px !important;
    }
}