/* Loading States Optimizados para APREMAT */

/* Spinner principal mejorado */
.spa-loading-spinner {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 10001;
    display: none;
}

.spa-loading-spinner.active {
    display: block;
}

.spinner-container {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    text-align: center;
    min-width: 120px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #3b82f6;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 12px;
}

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

.loading-text {
    color: #374151;
    font-size: 14px;
    font-weight: 500;
    margin: 0;
}

/* Modo oscuro */
@media (prefers-color-scheme: dark) {
    .spinner-container {
        background: rgba(31, 41, 55, 0.95);
        color: #f9fafb;
    }
    
    .spinner {
        border-color: #374151;
        border-top-color: #60a5fa;
    }
    
    .loading-text {
        color: #f9fafb;
    }
}

/* Barra de progreso mejorada */
.spa-progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 4px;
    background: linear-gradient(90deg, #3b82f6, #8b5cf6, #06b6d4);
    z-index: 10000;
    transition: width 0.3s ease;
    opacity: 0;
    visibility: hidden;
    border-radius: 0 2px 2px 0;
}

.spa-progress-bar.active {
    opacity: 1;
    visibility: visible;
    width: 100%;
    animation: progress-pulse 1.5s ease-in-out;
}

@keyframes progress-pulse {
    0% { 
        width: 0%; 
        opacity: 0.8;
    }
    50% { 
        width: 70%; 
        opacity: 1;
    }
    100% { 
        width: 100%; 
        opacity: 0;
    }
}

/* Skeleton loading para contenido */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: 4px;
}

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

.skeleton-text {
    height: 16px;
    margin-bottom: 8px;
}

.skeleton-text.short { width: 60%; }
.skeleton-text.medium { width: 80%; }
.skeleton-text.long { width: 100%; }

.skeleton-image {
    height: 200px;
    width: 100%;
    border-radius: 8px;
}

/* Loading states para botones */
.btn-loading {
    position: relative;
    pointer-events: none;
    opacity: 0.7;
}

.btn-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Optimizaciones para móviles */
@media (max-width: 768px) {
    .spinner-container {
        padding: 20px;
        min-width: 100px;
    }
    
    .spinner {
        width: 32px;
        height: 32px;
        border-width: 2px;
    }
    
    .loading-text {
        font-size: 13px;
    }
    
    .spa-progress-bar {
        height: 3px;
    }
}

/* Reducir animaciones para usuarios sensibles */
@media (prefers-reduced-motion: reduce) {
    .spinner,
    .skeleton,
    .btn-loading::after {
        animation: none;
    }
    
    .spa-progress-bar {
        transition: none;
    }
}