/* ============================
   R1 — TEMPLATE LIBRARY
   Uses the existing --nk-* design tokens from style.css
   ============================ */

/* --- Hero --- */
.nk-hero,
.nk-lib-hero {
    text-align: center;
    padding: 3.5rem 1.5rem 1rem;
    max-width: 800px;
    margin: 0 auto;
}
.nk-lib-hero h1 {
    font-size: clamp(1.9rem, 4.5vw, 2.9rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin: 0 0 0.85rem;
    color: var(--nk-text);
}
.nk-lib-hero p {
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--nk-muted);
    margin: 0 0 1.25rem;
}
.nk-lib-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.75rem;
    justify-content: center;
    font-size: 0.9rem;
    color: var(--nk-muted);
}
.nk-lib-stats strong { color: var(--nk-accent); font-weight: 700; }

/* --- Category filters --- */
.nk-cat-pills,
.nk-lib-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
    padding: 1.25rem 1.5rem 0.5rem;
}
.nk-cat-pill {
    background: var(--nk-surface);
    border: 1px solid var(--nk-border);
    color: var(--nk-muted);
    font-size: 0.85rem;
    font-weight: 600;
    font-family: inherit;
    padding: 0.42rem 1rem;
    border-radius: 999px;
    cursor: pointer;
    transition: all 0.2s ease;
}
.nk-cat-pill:hover {
    border-color: var(--nk-accent);
    color: var(--nk-accent);
}
.nk-cat-pill.active {
    background: var(--nk-accent);
    border-color: var(--nk-accent);
    color: #fff;
}

/* --- Grid + cards --- */
.nk-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
    gap: 1.75rem;
    max-width: 1180px;
    margin: 1.5rem auto 2rem;
    padding: 0 1.5rem;
}
.nk-card {
    background: var(--nk-card);
    border: 1px solid var(--nk-border);
    border-radius: 16px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.nk-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 40px rgba(35, 131, 226, 0.13);
}
.nk-tpl-thumb { position: relative; overflow: hidden; background: #fbfbfa; }
.nk-tpl-thumb img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform 0.4s ease;
}
.nk-tpl-card:hover .nk-tpl-thumb img { transform: scale(1.03); }

.nk-tpl-cat {
    position: absolute;
    top: 0.75rem;
    left: 0.75rem;
    background: rgba(45, 42, 61, 0.85);
    color: #fff;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    padding: 0.22rem 0.6rem;
    border-radius: 999px;
    backdrop-filter: blur(4px);
}

.nk-card-body {
    padding: 1.25rem 1.35rem 1.35rem;
    display: flex;
    flex-direction: column;
    flex: 1;
}
.nk-card-title {
    font-size: 1.08rem;
    font-weight: 700;
    margin: 0 0 0.55rem;
    color: var(--nk-text);
    line-height: 1.35;
}
.nk-card-excerpt {
    font-size: 0.875rem;
    line-height: 1.65;
    color: var(--nk-muted);
    margin: 0 0 1rem;
}
.nk-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 1.1rem;
}
.nk-badge {
    background: rgba(35, 131, 226, 0.08);
    border: 1px solid rgba(35, 131, 226, 0.18);
    color: var(--nk-accent);
    font-size: 0.7rem;
    font-weight: 600;
    padding: 0.18rem 0.55rem;
    border-radius: 999px;
}

.nk-tpl-actions { margin-top: auto; }
.nk-btn {
    display: block;
    width: 100%;
    text-align: center;
    padding: 0.72rem 1rem;
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 700;
    font-family: inherit;
    text-decoration: none;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
}
.nk-btn-primary {
    background: var(--nk-accent);
    color: #fff;
}
.nk-btn-primary:hover {
    background: #1a6fc4;
    transform: translateY(-1px);
    box-shadow: 0 8px 22px rgba(35, 131, 226, 0.28);
}

.nk-lib-empty {
    text-align: center;
    padding: 3rem 1.5rem;
    color: var(--nk-muted);
}

/* --- How-to note --- */
.nk-lib-note {
    max-width: 760px;
    margin: 1rem auto 3.5rem;
    padding: 1.75rem 2rem;
    background: var(--nk-surface);
    border: 1px solid var(--nk-border);
    border-radius: 16px;
}
.nk-lib-note h2 {
    font-size: 1.12rem;
    margin: 0 0 0.9rem;
    color: var(--nk-text);
}
.nk-lib-note ol {
    margin: 0 0 1rem;
    padding-left: 1.3rem;
    color: var(--nk-muted);
    font-size: 0.9rem;
    line-height: 1.8;
}
.nk-lib-note p {
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--nk-muted);
    margin: 0;
}
.nk-lib-note code {
    background: rgba(35, 131, 226, 0.08);
    color: var(--nk-accent);
    padding: 0.1rem 0.4rem;
    border-radius: 4px;
    font-size: 0.85em;
}

.nk-tpl-card[hidden] { display: none !important; }

/* 2026-11-05 排版修复：隐藏无样式 ♥；分类 chip 移入卡片正文后的样式 */
.nk-like { display: none !important; }
.nk-card-body .nk-badge.nk-tpl-cat-inline { align-self: flex-start; margin-bottom: 0.6rem; }

@media (max-width: 768px) {
    .nk-grid { gap: 1.25rem; padding: 0 1rem; grid-template-columns: 1fr; }
    .nk-lib-note { margin-left: 1rem; margin-right: 1rem; padding: 1.4rem 1.25rem; }
    .nk-lib-hero { padding-top: 2.5rem; }
}

.nk-card-excerpt{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;min-height:4.3rem}