/* ============================================
   ACDesign Stage 2 — FAQ 卡片化 + 搜索 + 分类
   2026-05-04 (yeungmingkei)
   ============================================ */

/* === 工具条（搜索 + tabs） === */
.ac-faq-toolbar {
    max-width: 1200px;
    margin: 0 auto 40px;
    padding: 0 20px;
}

.ac-faq-search-wrap {
    position: relative;
    max-width: 560px;
    margin: 0 auto 28px;
}
.ac-faq-search-icon {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gold);
    font-size: 16px;
    pointer-events: none;
    opacity: 0.7;
}
#ac-faq-search {
    width: 100%;
    padding: 14px 18px 14px 48px !important;
    background: var(--dark-card) !important;
    border: 1px solid var(--dark-border) !important;
    border-bottom: 1px solid var(--dark-border) !important;
    border-radius: 30px !important;
    color: var(--text-primary) !important;
    font-size: 15px !important;
    font-family: var(--font-sans) !important;
    transition: border-color 0.3s, box-shadow 0.3s;
}
#ac-faq-search:focus {
    outline: none !important;
    border-color: var(--gold) !important;
    box-shadow: 0 0 0 3px rgba(198, 169, 98, 0.15) !important;
}
#ac-faq-search::placeholder { color: var(--text-dim) !important; }

.ac-faq-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}
.ac-faq-tabs button {
    padding: 9px 18px;
    background: transparent;
    border: 1px solid var(--dark-border);
    border-radius: 24px;
    color: var(--text-secondary);
    font-size: 13px;
    font-family: var(--font-sans);
    letter-spacing: 0.04em;
    cursor: pointer;
    transition: all 0.25s;
}
.ac-faq-tabs button:hover {
    border-color: var(--gold);
    color: var(--gold);
}
.ac-faq-tabs button.active {
    background: var(--gold);
    border-color: var(--gold);
    color: var(--dark);
    font-weight: 600;
}
.ac-faq-tabs button span {
    display: inline-block;
    margin-left: 4px;
    font-size: 11px;
    opacity: 0.8;
}

/* === 网格 === */
.ac-faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
    gap: 28px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px 60px;
}
@media (max-width: 480px) {
    .ac-faq-grid { grid-template-columns: 1fr; gap: 20px; }
    .ac-faq-toolbar { margin-bottom: 28px; }
    .ac-faq-tabs button { padding: 7px 14px; font-size: 12px; }
}

/* === 卡片 === */
.ac-faq-card {
    display: flex !important;
    flex-direction: column;
    background: var(--dark-card) !important;
    border: 1px solid var(--dark-border) !important;
    border-radius: 8px;
    overflow: hidden;
    text-decoration: none !important;
    transition: transform 0.35s var(--ease-out-expo), border-color 0.35s, box-shadow 0.35s;
}
.ac-faq-card:hover {
    transform: translateY(-4px);
    border-color: var(--gold) !important;
    box-shadow: 0 12px 32px -12px rgba(198, 169, 98, 0.22);
}

.ac-faq-card-img {
    aspect-ratio: 16 / 10;
    background-size: cover;
    background-position: center;
    background-color: var(--dark-subtle);
    transition: transform 0.6s var(--ease-out-expo);
    position: relative;
}
.ac-faq-card-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(12,12,12,0.45) 100%);
    pointer-events: none;
}
.ac-faq-card:hover .ac-faq-card-img { transform: scale(1.05); }

.ac-faq-card-body {
    padding: 18px 20px 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
}

.ac-faq-card-cat {
    display: inline-block;
    align-self: flex-start;
    font-size: 11px;
    letter-spacing: 0.12em;
    padding: 4px 10px;
    border-radius: 3px;
    text-transform: uppercase;
    font-family: var(--font-sans);
    font-weight: 500;
    background: rgba(198, 169, 98, 0.12);
    color: var(--gold) !important;
    border: 1px solid rgba(198, 169, 98, 0.3);
}
.ac-faq-card-cat-estate    { background: rgba(198,169,98,0.14); color: var(--gold) !important; border-color: rgba(198,169,98,0.35); }
.ac-faq-card-cat-material  { background: rgba(120,180,200,0.12); color: #94c4d4 !important; border-color: rgba(120,180,200,0.3); }
.ac-faq-card-cat-monitor   { background: rgba(220,120,120,0.12); color: #d49494 !important; border-color: rgba(220,120,120,0.3); }
.ac-faq-card-cat-payment   { background: rgba(220,170,90,0.12); color: #d4b06b !important; border-color: rgba(220,170,90,0.3); }
.ac-faq-card-cat-trending  { background: rgba(160,200,140,0.12); color: #a8c89b !important; border-color: rgba(160,200,140,0.3); }
.ac-faq-card-cat-evergreen { background: rgba(232,228,222,0.06); color: rgba(232,228,222,0.7) !important; border-color: rgba(232,228,222,0.2); }

.ac-faq-card-title {
    font-family: var(--font-serif) !important;
    font-size: 19px !important;
    line-height: 1.45 !important;
    color: var(--text-primary) !important;
    margin: 0 !important;
    font-weight: 400 !important;
    letter-spacing: 0.01em !important;
    /* 限制 2 行 */
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.ac-faq-card:hover .ac-faq-card-title { color: var(--gold) !important; }

.ac-faq-card-excerpt {
    font-size: 13.5px !important;
    line-height: 1.7 !important;
    color: rgba(232, 228, 222, 0.65) !important;
    margin: 0 !important;
    /* 限制 3 行 */
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ac-faq-card-date {
    margin-top: auto;
    padding-top: 8px;
    font-size: 12px;
    color: var(--text-dim) !important;
    letter-spacing: 0.05em;
    font-family: var(--font-sans);
}

/* === 空结果 === */
.ac-faq-empty {
    text-align: center;
    padding: 60px 20px;
    max-width: 520px;
    margin: 0 auto;
}
.ac-faq-empty p {
    color: var(--text-secondary) !important;
    line-height: 1.9 !important;
    font-size: 15px !important;
}
.ac-faq-empty a {
    color: var(--gold) !important;
    border-bottom: 1px solid var(--gold);
}

/* === 隐藏旧的 ul/li 备用样式（如果有残留） === */
.entry-content > div > ul:not(.ac-faq-tabs):not(.menu) > li > a[href*="/faq/"]:only-child {
    /* 避免和旧 ul/li 冲突 */
}