/* 素材总览（卡片 + 标签筛选）与详情（桌面一屏四宫格，手机可轻滚） */

.tag-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 0.75rem;
    align-items: center;
    margin-bottom: 1.25rem;
}

.tag-filter input {
    border: 1px solid var(--color-border-medium);
    border-radius: 6px;
    padding: 0.35rem 0.6rem;
    min-width: 10rem;
}

.filter-tag,
.mat-card .tag {
    display: inline-block;
    padding: 0.2rem 0.55rem;
    margin: 0.15rem 0.2rem 0.15rem 0;
    border-radius: 999px;
    background: var(--color-tag-bg);
    color: var(--color-tag-text);
    font-size: 0.8rem;
    cursor: pointer;
    user-select: none;
}

.filter-tag.active {
    background: var(--color-accent-blue);
    color: var(--color-text);
}

.clear-filter {
    margin-left: 0.35rem;
    border: 1px solid var(--color-border-dark);
    background: var(--color-surface);
    border-radius: 6px;
    padding: 0.2rem 0.55rem;
    cursor: pointer;
    font-size: 0.8rem;
}

.mat-overview {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.mat-card {
    width: 200px;
    border: 1px solid var(--color-border-medium);
    padding: 0.5rem;
    background: var(--color-surface);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
    border-radius: 8px;
}

.mat-card > a {
    color: inherit;
    text-decoration: none;
    background-image: none;
}

.mat-card > a:hover {
    background-image: none;
}

.mat-card img,
.mat-card-placeholder {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    display: block;
    border-radius: 6px;
    background: var(--color-surface-dim);
}

.mat-card-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 600;
    color: var(--color-text-subtle);
}

.mat-card h3 {
    margin: 0.5rem 0 0.25rem;
    font-size: 0.95rem;
}

.mat-card p {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin: 0;
    line-height: 1.45;
}

.mat-empty {
    color: var(--color-text-muted);
}

/* ---------- 详情：四宫格 ---------- */
body.mat-detail-page {
    min-height: 100vh;
}

body.mat-detail-page .content {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    box-sizing: border-box;
}

body.mat-detail-page header,
body.mat-detail-page footer {
    flex-shrink: 0;
}

body.mat-detail-page main.mat-detail-main {
    display: flex;
    flex-direction: column;
    min-height: 0;
    /* 桌面尽量一屏：视口减去头尾与外边距的粗略空间 */
    height: calc(100vh - 11rem);
    max-height: calc(100vh - 11rem);
    overflow: hidden;
    padding: 1rem;
    background: transparent;
    box-shadow: none;
}

.mat-panels {
    display: grid;
    grid-template-columns: 1.45fr 0.9fr;
    grid-template-rows: auto 1fr auto;
    grid-template-areas:
        "demo download"
        "demo intro"
        "demo license";
    gap: 0.85rem;
    flex: 1;
    min-height: 0;
    height: 100%;
}

.mat-panel-demo { grid-area: demo; }
.mat-panel-download { grid-area: download; }
.mat-panel-intro { grid-area: intro; }
.mat-panel-license { grid-area: license; }

.mat-panel {
    background: var(--color-blog-body-bg, var(--color-surface));
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 0.85rem 1rem;
    display: flex;
    flex-direction: column;
    min-height: 0;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.mat-panel-download,
.mat-panel-license {
    flex-shrink: 0;
}

.mat-panel-download-btn,
.mat-panel-download-empty,
.mat-panel-download-list {
    align-items: stretch;
    justify-content: center;
    text-align: center;
    gap: 0.45rem;
    text-decoration: none !important;
    color: var(--color-text) !important;
    background-image: none !important;
}

.mat-panel-download-list {
    padding: 0.55rem;
}

.mat-download-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.2rem;
    padding: 0.55rem 0.65rem;
    border-radius: 10px;
    background: var(--color-link-mark);
    text-decoration: none !important;
    color: var(--color-text) !important;
    background-image: none !important;
    transition: filter 0.15s ease, box-shadow 0.15s ease;
}

.mat-download-link:hover,
.mat-download-link:focus-visible {
    filter: brightness(0.97);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    background-image: none !important;
    text-decoration: none !important;
}

.mat-panel-download-btn {
    background: var(--color-link-mark);
    border-color: transparent;
    cursor: pointer;
    transition: filter 0.15s ease, box-shadow 0.15s ease;
    align-items: center;
}

.mat-panel-download-btn:hover,
.mat-panel-download-btn:focus-visible {
    filter: brightness(0.97);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    background-image: none !important;
    text-decoration: none !important;
}

.mat-panel-download-empty {
    opacity: 0.75;
    align-items: center;
}

.mat-download-label {
    font-size: 1.15rem;
    font-weight: 700;
    line-height: 1.2;
}

.mat-download-name {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    word-break: break-all;
    max-width: 100%;
}

.mat-panel-intro {
    min-height: 0;
}

.mat-panel-download h2,
.mat-panel-intro h2,
.mat-panel-license h2 {
    font-size: 0.95rem;
}

.mat-panel-demo h2 {
    font-size: 1.05rem;
}

.mat-panel h2 {
    margin: 0 0 0.5rem;
    flex-shrink: 0;
}

.mat-panel-body {
    flex: 1;
    min-height: 0;
    overflow: auto;
    line-height: 1.55;
    color: var(--color-text);
    font-size: 0.9rem;
}

.mat-panel-demo .mat-panel-body {
    font-size: 0.95rem;
}

.mat-panel-media {
    display: flex;
    align-items: center;
    justify-content: center;
}

.mat-demo-media {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 8px;
}

.mat-muted {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

@media (max-width: 800px) {
    body.mat-detail-page main.mat-detail-main {
        height: auto;
        max-height: none;
        overflow: visible;
    }

    .mat-panels {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
        grid-template-areas:
            "demo"
            "download"
            "intro"
            "license";
        height: auto;
    }

    .mat-panel {
        overflow: visible;
        min-height: 12rem;
    }

    .mat-panel-body {
        overflow: visible;
    }

    .mat-demo-media {
        max-height: 50vh;
    }
}