/**
 * Skeleton Loading Styles - Sprint 5
 * Loading states com skeleton screens para melhor UX
 */

/* Skeleton base animation */
@keyframes skeleton-loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

.skeleton {
    background: linear-gradient(
        90deg,
        #f0f0f0 0%,
        #e0e0e0 20%,
        #f0f0f0 40%,
        #f0f0f0 100%
    );
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
    border-radius: 0.4rem;
    display: block;
}

/* Dark mode skeleton */
.dark .skeleton {
    background: linear-gradient(
        90deg,
        #374151 0%,
        #4b5563 20%,
        #374151 40%,
        #374151 100%
    );
    background-size: 200% 100%;
}

/* Skeleton Card */
.skeleton-card {
    background: white;
    border-radius: 1.2rem;
    padding: 0;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.dark .skeleton-card {
    background: #1f2937;
}

/* Skeleton Image */
.skeleton-image {
    width: 100%;
    aspect-ratio: 16/9;
    background: linear-gradient(
        90deg,
        #e0e0e0 0%,
        #f0f0f0 50%,
        #e0e0e0 100%
    );
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
}

.dark .skeleton-image {
    background: linear-gradient(
        90deg,
        #374151 0%,
        #4b5563 50%,
        #374151 100%
    );
    background-size: 200% 100%;
}

/* Skeleton Text */
.skeleton-text {
    height: 1.4rem;
    margin-bottom: 0.8rem;
    border-radius: 0.3rem;
}

.skeleton-text.title {
    height: 2.4rem;
    width: 70%;
    margin-bottom: 1.2rem;
}

.skeleton-text.subtitle {
    height: 1.8rem;
    width: 50%;
    margin-bottom: 1rem;
}

.skeleton-text.line {
    width: 100%;
}

.skeleton-text.line-short {
    width: 85%;
}

.skeleton-text.line-medium {
    width: 60%;
}

/* Skeleton Button */
.skeleton-button {
    height: 4.5rem;
    width: 100%;
    border-radius: 0.8rem;
    margin-top: 1rem;
}

/* Skeleton Grid de características */
.skeleton-features {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1rem;
    padding: 1.5rem 0;
}

.skeleton-feature-item {
    height: 8rem;
    border-radius: 0.8rem;
}

@media (max-width: 768px) {
    .skeleton-features {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Skeleton Badge */
.skeleton-badge {
    height: 2.8rem;
    width: 10rem;
    border-radius: 9999px;
    display: inline-block;
    margin-right: 0.8rem;
}

/* Skeleton Imovel Card Completo */
.skeleton-imovel {
    background: white;
    border-radius: 1.2rem;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.dark .skeleton-imovel {
    background: #1f2937;
}

.skeleton-imovel-body {
    padding: 2rem;
}

.skeleton-badges {
    display: flex;
    gap: 0.8rem;
    margin-bottom: 1.5rem;
}

/* Skeleton List Container */
.skeleton-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 3rem;
    padding: 2rem;
}

@media (max-width: 768px) {
    .skeleton-list {
        grid-template-columns: 1fr;
        padding: 1rem;
    }
}

/* Fade in quando conteúdo carregar */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.content-loaded {
    animation: fadeIn 0.4s ease-out;
}

/* Pulsating skeleton (alternativa mais sutil) */
.skeleton-pulse {
    animation: skeleton-pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes skeleton-pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* Skeleton para Search Results */
.skeleton-search-box {
    height: 4.5rem;
    max-width: 32rem;
    margin: 0 auto 2rem;
    border-radius: 0.4rem;
}

/* Skeleton para Menu Items */
.skeleton-menu-item {
    height: 4rem;
    margin-bottom: 0.5rem;
    border-radius: 0.4rem;
}

/* Accessibility - Reduce motion */
@media (prefers-reduced-motion: reduce) {
    .skeleton,
    .skeleton-image,
    .skeleton-pulse {
        animation: none;
        background: #e0e0e0;
    }

    .dark .skeleton,
    .dark .skeleton-image {
        background: #374151;
    }
}

/* Loading Spinner (alternativo para ações específicas) */
.spinner {
    border: 3px solid rgba(0, 0, 0, 0.1);
    border-left-color: #4d86c4;
    border-radius: 50%;
    width: 3rem;
    height: 3rem;
    animation: spin 1s linear infinite;
    display: inline-block;
}

.dark .spinner {
    border-color: rgba(255, 255, 255, 0.1);
    border-left-color: #60a5fa;
}

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

.spinner-center {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 20rem;
}

/* Loading Overlay para formulários */
.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10;
    border-radius: inherit;
}

.dark .loading-overlay {
    background: rgba(31, 41, 55, 0.9);
}

.loading-overlay.hidden {
    display: none;
}