/* ======================== */
/*  Filter Chips            */
/* ======================== */
.filter-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 14px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-chip);
    background: var(--color-surface);
    color: var(--color-text-secondary);
    font-family: var(--font-family);
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    transition: all var(--transition-fast);
    user-select: none;
}

.filter-chip:hover {
    background: #E7F0FD;
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.filter-chip.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #FFFFFF;
}

.chip-count {
    font-size: 0.75rem;
    opacity: 0.8;
}

/* ======================== */
/*  Feed Cards              */
/* ======================== */
.feed-card {
    background: var(--color-surface);
    border-radius: var(--radius-card);
    box-shadow: 0 1px 3px var(--color-shadow);
    overflow: hidden;
    opacity: 0;
    transform: translateY(12px);
    animation: cardFadeIn 0.4s ease forwards;
}

.card-header {
    padding: 14px 16px 8px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.card-type-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.card-type-icon.imagens { background: #FFF3E0; color: #E65100; }
.card-type-icon.textos  { background: #E8EAF6; color: #283593; }
.card-type-icon.videos  { background: #E3F2FD; color: #1565C0; }
.card-type-icon.outros  { background: #FCE4EC; color: #C62828; }

.card-meta {
    flex: 1;
    min-width: 0;
}

.card-title {
    font-size: 0.9375rem;
    font-weight: 600;
    margin: 0;
    line-height: 1.3;
    overflow-wrap: break-word;
}

.card-date {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    margin: 2px 0 0;
}

.card-like,
.card-share {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px 8px;
    font-size: 1rem;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 3px;
    flex-shrink: 0;
    transition: background var(--transition-fast), color var(--transition-fast);
    color: var(--color-text-secondary);
}

.card-like:hover,
.card-share:hover {
    background: var(--color-bg);
}

.card-like.liked {
    color: #E53935;
}

.card-like.liked:hover {
    background: #FFEBEE;
}

.like-count {
    font-size: 0.75rem;
    font-weight: 600;
    min-width: 12px;
}

/* Image card */
.card-image {
    width: 100%;
    display: block;
    cursor: pointer;
    background: var(--color-bg);
}

/* Video card */
.card-video-wrapper {
    position: relative;
    background: #000;
    user-select: none;
    transform: translateZ(0); /* Force GPU layer — fixes Chrome video rendering inside overflow:hidden+border-radius */
    -webkit-transform: translateZ(0);
}

.card-video {
    width: 100%;
    display: block;
    cursor: pointer;
}

/* Seek flash indicators */
.seek-indicator {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.6);
    color: #fff;
    font-size: 0.875rem;
    font-weight: 600;
    padding: 8px 14px;
    border-radius: 20px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.15s ease;
    display: flex;
    align-items: center;
    gap: 4px;
}

.seek-indicator.visible { opacity: 1; }
.seek-left  { left: 16px; }
.seek-right { right: 16px; }

/* Custom controls bar */
.video-controls-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.72));
    padding: 24px 8px 8px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.vc-btn {
    background: none;
    border: none;
    color: #fff;
    cursor: pointer;
    padding: 4px 6px;
    font-size: 1rem;
    line-height: 1;
    display: flex;
    align-items: center;
    flex-shrink: 0;
    opacity: 0.9;
    transition: opacity var(--transition-fast);
}

.vc-btn:hover { opacity: 1; }

.vc-time,
.vc-duration {
    color: #fff;
    font-size: 0.7rem;
    white-space: nowrap;
    flex-shrink: 0;
    min-width: 28px;
    text-align: center;
}

.vc-progress {
    flex: 1;
    height: 3px;
    -webkit-appearance: none;
    appearance: none;
    background: rgba(255, 255, 255, 0.35);
    border-radius: 2px;
    cursor: pointer;
    outline: none;
    margin: 0 2px;
}

.vc-progress::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #fff;
    cursor: pointer;
}

.vc-progress::-moz-range-thumb {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #fff;
    border: none;
    cursor: pointer;
}

/* Fullscreen */
.card-video-wrapper:fullscreen,
.card-video-wrapper:-webkit-full-screen {
    background: #000;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.card-video-wrapper:fullscreen .card-video,
.card-video-wrapper:-webkit-full-screen .card-video {
    width: 100%;
    max-height: calc(100vh - 44px);
    object-fit: contain;
}

.card-video-wrapper:fullscreen .video-controls-bar,
.card-video-wrapper:-webkit-full-screen .video-controls-bar {
    flex-shrink: 0;
}

/* Video download fallback (wmv/zip) */
.card-download {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--color-bg);
}

.card-download-icon {
    font-size: 2rem;
    color: var(--color-text-secondary);
}

.card-download a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
}

.card-download a:hover {
    text-decoration: underline;
}

/* Text card body */
.card-body-text {
    padding: 0 16px 12px;
    font-size: 0.9375rem;
    line-height: 1.6;
    overflow-wrap: break-word;
}

.card-body-text.clamped {
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-toggle-text {
    display: inline-block;
    background: none;
    border: none;
    color: var(--color-primary);
    font-family: var(--font-family);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    padding: 4px 16px 12px;
}

.card-toggle-text:hover {
    text-decoration: underline;
}

/* Document card */
.card-document {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px;
    background: var(--color-bg);
}

.doc-icon {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #fff;
    flex-shrink: 0;
}

.doc-icon.pdf { background: var(--color-pdf); }
.doc-icon.doc { background: var(--color-doc); }
.doc-icon.xls { background: var(--color-xls); }
.doc-icon.ppt { background: var(--color-ppt); }
.doc-icon.default { background: var(--color-text-secondary); }

.doc-info {
    flex: 1;
    min-width: 0;
}

.doc-name {
    font-weight: 500;
    font-size: 0.9375rem;
    word-break: break-all;
}

.doc-action {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--color-primary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    margin-top: 4px;
}

.doc-action:hover {
    text-decoration: underline;
}

/* Card footer */
.card-footer {
    padding: 8px 16px 12px;
    display: flex;
    justify-content: flex-end;
}

/* ======================== */
/*  Skeleton Cards          */
/* ======================== */
.skeleton-card {
    background: var(--color-surface);
    border-radius: var(--radius-card);
    box-shadow: 0 1px 3px var(--color-shadow);
    overflow: hidden;
}

.skeleton-header {
    padding: 14px 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.skeleton-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
}

.skeleton-lines {
    flex: 1;
}

.skeleton-line {
    height: 12px;
    border-radius: 6px;
    margin-bottom: 6px;
}

.skeleton-line:last-child {
    width: 60%;
    margin-bottom: 0;
}

.skeleton-body {
    height: 200px;
}

.skeleton-pulse {
    background: linear-gradient(90deg, #EAEAEA 25%, #F5F5F5 50%, #EAEAEA 75%);
    background-size: 200% 100%;
    animation: skeletonPulse 1.5s ease-in-out infinite;
}

/* ======================== */
/*  Lightbox                */
/* ======================== */
.lightbox-overlay {
    position: fixed;
    inset: 0;
    z-index: 2000;
    background: rgba(0, 0, 0, 0.92);
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-overlay[hidden] {
    display: none;
}

.lightbox-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 8px;
    z-index: 10;
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.15);
    border: none;
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 12px;
    border-radius: 50%;
    z-index: 10;
    transition: background var(--transition-fast);
}

.lightbox-nav:hover {
    background: rgba(255,255,255,0.3);
}

.lightbox-prev { left: 16px; }
.lightbox-next { right: 16px; }

.lightbox-content {
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.lightbox-img {
    max-width: 90vw;
    max-height: 85vh;
    object-fit: contain;
    border-radius: 4px;
}

.lightbox-caption {
    color: #ccc;
    font-size: 0.875rem;
    margin-top: 12px;
    text-align: center;
    max-width: 600px;
}

/* ======================== */
/*  Animations              */
/* ======================== */
@keyframes cardFadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@media (prefers-reduced-motion: reduce) {
    .feed-card {
        animation: none;
        opacity: 1;
        transform: none;
    }

    .skeleton-pulse {
        animation: none;
        background: #EAEAEA;
    }
}