/* ============================================
   category.css — 包印网商城 栏目页
   布局：面包屑条 → 两栏（左 240 栏目侧栏 + 右商品区）→ 底部横向推荐
        与上一版「全宽大横幅 + 通栏网格」明显不同
   配色：品牌墨蓝 #04539F + 亮蓝 #198DFB + 阳光橙 #F5871F + 暖纸白底 #F6F4F0
   类名前缀：by_c_ （商品卡片复用 app.css 的 .by_pcard）
   ============================================ */

.by_c_page { background: var(--by-paper); padding-bottom: 50px; }
.by_c_in { max-width: 1300px; margin: 0 auto; padding: 0 20px; }

/* ============================================
   ① 面包屑条
   ============================================ */
.by_c_crumb_bar { background: #fff; border-bottom: 1px solid var(--by-line); }
.by_c_crumb { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; height: 46px; font-size: 13px; color: var(--by-ink-3); }
.by_c_crumb a { color: var(--by-ink-2); transition: color .18s; }
.by_c_crumb a:hover { color: var(--by-blue); }
.by_c_crumb .sep { color: var(--by-line); }
.by_c_crumb .cur { color: var(--by-blue-deep); font-weight: 600; }

/* ============================================
   ② 两栏骨架
   ============================================ */
.by_c_wrap { display: grid; grid-template-columns: 240px 1fr; gap: 20px; align-items: start; padding-top: 20px; }

/* ---------- 左侧栏 ---------- */
.by_c_side { display: flex; flex-direction: column; gap: 14px; position: sticky; top: 68px; }

.by_c_box { background: #fff; border: 1px solid var(--by-line); border-radius: var(--by-radius); overflow: hidden; }
.by_c_box_hd { display: flex; align-items: center; gap: 8px; padding: 13px 16px; font-size: 14.5px; font-weight: 700; color: var(--by-navy); border-bottom: 1px solid var(--by-line-soft); }
.by_c_box_hd i { color: var(--by-orange); }

.by_c_nav_link { display: flex; align-items: center; gap: 10px; padding: 0 16px; height: 44px; font-size: 13.5px; color: var(--by-ink); border-bottom: 1px dashed var(--by-line-soft); transition: all .16s; }
.by_c_nav_link > i:first-child { width: 16px; text-align: center; font-size: 13px; color: var(--by-blue); flex-shrink: 0; }
.by_c_nav_link em { margin-left: auto; font-style: normal; font-size: 11.5px; color: var(--by-ink-3); }
.by_c_nav_link:hover { background: var(--by-blue-tint); color: var(--by-blue-deep); }
.by_c_nav_link.active { background: var(--by-orange-tint); color: var(--by-orange-deep); font-weight: 700; box-shadow: inset 3px 0 0 var(--by-orange); }
.by_c_nav_link.active > i:first-child, .by_c_nav_link.active em { color: var(--by-orange-deep); }
.by_c_nav_sub { background: var(--by-paper); border-bottom: 1px dashed var(--by-line-soft); padding: 4px 0; }
.by_c_nav_sub a { display: block; padding: 7px 16px 7px 42px; font-size: 12.5px; color: var(--by-ink-2); transition: all .16s; }
.by_c_nav_sub a:hover { color: var(--by-blue); background: #fff; }
.by_c_nav_sub a.active { color: var(--by-orange-deep); font-weight: 700; }

/* 侧栏热销小条 */
.by_c_hot_item { display: flex; align-items: center; gap: 10px; padding: 11px 14px; border-bottom: 1px dashed var(--by-line-soft); transition: background .16s; }
.by_c_hot_item:last-child { border-bottom: none; }
.by_c_hot_item:hover { background: var(--by-blue-tint); }
.by_c_hot_no { width: 18px; height: 18px; flex-shrink: 0; border-radius: var(--by-radius-sm); background: var(--by-paper-2); color: var(--by-ink-3); font-size: 11px; font-weight: 700; display: inline-flex; align-items: center; justify-content: center; }
.by_c_hot_item:nth-child(-n+3) .by_c_hot_no { background: var(--by-grad-orange); color: #fff; }
.by_c_hot_thumb { width: 42px; height: 42px; flex-shrink: 0; border-radius: var(--by-radius-sm); overflow: hidden; background: var(--by-paper); }
.by_c_hot_thumb img { width: 100%; height: 100%; object-fit: contain; padding: 3px; }
.by_c_hot_tx { min-width: 0; flex: 1; }
.by_c_hot_name { font-size: 12.5px; line-height: 1.5; color: var(--by-ink); height: 37px; overflow: hidden; }
.by_c_hot_price { font-size: 13px; font-weight: 800; color: var(--by-orange-deep); margin-top: 2px; }
.by_c_hot_price::before { content: '¥'; font-size: 10px; margin-right: 1px; }

/* 侧栏客服 / 入驻卡 */
.by_c_cta { background: var(--by-grad-navy); border-radius: var(--by-radius); padding: 18px 16px; color: #fff; }
.by_c_cta_ic { width: 38px; height: 38px; border-radius: var(--by-radius); background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.22); display: inline-flex; align-items: center; justify-content: center; font-size: 16px; }
.by_c_cta strong { display: block; margin-top: 12px; font-size: 15px; font-weight: 700; }
.by_c_cta p { margin-top: 7px; font-size: 12px; line-height: 1.75; color: rgba(255,255,255,.66); }
.by_c_cta_tel { display: block; margin-top: 10px; font-size: 17px; font-weight: 800; color: var(--by-orange-light); letter-spacing: .3px; }
.by_c_cta_btn { display: flex; align-items: center; justify-content: center; gap: 7px; margin-top: 13px; height: 36px; border-radius: var(--by-radius); background: var(--by-grad-orange); color: #fff; font-size: 13px; font-weight: 700; transition: filter .18s; }
.by_c_cta_btn:hover { filter: brightness(1.08); color: #fff; }

/* ---------- 右侧主区 ---------- */
.by_c_main { min-width: 0; }

/* 栏目头卡（紧凑，不再是全宽大横幅） */
.by_c_head { display: flex; align-items: center; gap: 18px; background: #fff; border: 1px solid var(--by-line); border-left: 4px solid var(--by-orange); border-radius: var(--by-radius); padding: 20px 24px; }
.by_c_head_ic { width: 56px; height: 56px; flex-shrink: 0; border-radius: var(--by-radius); background: var(--by-grad-blue); color: #fff; display: inline-flex; align-items: center; justify-content: center; font-size: 24px; }
.by_c_head_tt { min-width: 0; flex: 1; }
.by_c_head_tt h1 { font-size: 24px; font-weight: 800; color: var(--by-navy); letter-spacing: .5px; }
.by_c_head_tt p { margin-top: 7px; font-size: 13px; line-height: 1.8; color: var(--by-ink-2); }
.by_c_head_stat { flex-shrink: 0; text-align: center; padding-left: 20px; border-left: 1px dashed var(--by-line); }
.by_c_head_stat b { display: block; font-size: 26px; font-weight: 900; color: var(--by-orange-deep); line-height: 1; }
.by_c_head_stat span { display: block; margin-top: 6px; font-size: 12px; color: var(--by-ink-3); }

/* 子分类 chips */
.by_c_chips { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; background: #fff; border: 1px solid var(--by-line); border-top: none; border-radius: 0 0 var(--by-radius) var(--by-radius); margin-top: -1px; padding: 14px 24px; }
.by_c_chips_label { font-size: 12.5px; color: var(--by-ink-3); margin-right: 4px; }
.by_c_chip { display: inline-flex; align-items: center; gap: 5px; height: 28px; padding: 0 13px; border: 1px solid var(--by-line); border-radius: var(--by-radius-sm); background: #fff; font-size: 12.5px; color: var(--by-ink-2); transition: all .16s; }
.by_c_chip em { font-style: normal; font-size: 11px; color: var(--by-ink-3); }
.by_c_chip:hover { border-color: var(--by-blue); color: var(--by-blue); }
.by_c_chip.active { background: var(--by-blue); border-color: var(--by-blue); color: #fff; }
.by_c_chip.active em { color: rgba(255,255,255,.72); }

/* 排序条（白底 + 橙色下划线 tab） */
.by_c_bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; background: #fff; border: 1px solid var(--by-line); border-radius: var(--by-radius); margin-top: 14px; padding: 0 20px; }
.by_c_sort { display: flex; align-items: center; gap: 2px; flex-wrap: wrap; }
.by_c_sort_btn { position: relative; display: inline-flex; align-items: center; gap: 5px; height: 48px; padding: 0 16px; font-size: 13.5px; font-weight: 600; color: var(--by-ink-2); transition: color .18s; }
.by_c_sort_btn i { font-size: 11px; opacity: .7; }
.by_c_sort_btn:hover { color: var(--by-blue); }
.by_c_sort_btn.active { color: var(--by-orange-deep); }
.by_c_sort_btn.active::after { content: ''; position: absolute; left: 12px; right: 12px; bottom: 0; height: 3px; border-radius: 2px 2px 0 0; background: var(--by-grad-orange); }
.by_c_count { font-size: 12.5px; color: var(--by-ink-3); white-space: nowrap; }
.by_c_count strong { color: var(--by-orange-deep); font-size: 15px; font-weight: 800; margin: 0 2px; }

/* 商品网格 */
.by_c_grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 16px; }

/* 空态 */
.by_c_empty { background: #fff; border: 1px dashed var(--by-line); border-radius: var(--by-radius); padding: 66px 24px; text-align: center; margin-top: 16px; }
.by_c_empty_ic { width: 72px; height: 72px; margin: 0 auto; border-radius: 50%; background: var(--by-paper); color: var(--by-line); display: flex; align-items: center; justify-content: center; font-size: 30px; }
.by_c_empty h3 { font-size: 17px; font-weight: 700; color: var(--by-ink); margin-top: 18px; }
.by_c_empty p { font-size: 13px; color: var(--by-ink-3); margin-top: 8px; }
.by_c_empty_links { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 9px; margin-top: 18px; }
.by_c_empty_links a { height: 32px; display: inline-flex; align-items: center; padding: 0 16px; border: 1px solid var(--by-line); border-radius: var(--by-radius-sm); font-size: 13px; color: var(--by-ink-2); transition: all .16s; }
.by_c_empty_links a:hover { background: var(--by-orange); border-color: var(--by-orange); color: #fff; }

/* ============================================
   ③ 底部横向推荐
   ============================================ */
.by_c_tail { margin-top: 30px; }
.by_c_tail_head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 16px; }
.by_c_tail_head_l { display: flex; align-items: flex-start; gap: 12px; }
.by_c_tail_bar { width: 5px; height: 34px; margin-top: 2px; border-radius: 3px; background: var(--by-grad-orange); flex-shrink: 0; }
.by_c_tail_head h3 { font-size: 22px; font-weight: 800; color: var(--by-navy); letter-spacing: .5px; }
.by_c_tail_head p { font-size: 12.5px; color: var(--by-ink-3); margin-top: 5px; }
.by_c_tail_more { display: inline-flex; align-items: center; gap: 6px; height: 32px; padding: 0 15px; border: 1px solid var(--by-line); border-radius: var(--by-radius); background: #fff; font-size: 13px; font-weight: 600; color: var(--by-ink-2); transition: all .18s; }
.by_c_tail_more:hover { border-color: var(--by-orange); background: var(--by-orange); color: #fff; }
.by_c_tail_grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1200px) {
    .by_c_wrap { grid-template-columns: 210px 1fr; }
    .by_c_grid { grid-template-columns: repeat(3, 1fr); }
    .by_c_tail_grid { grid-template-columns: repeat(4, 1fr); }
    .by_c_tail_grid > :nth-child(5) { display: none; }
}

@media (max-width: 992px) {
    .by_c_wrap { grid-template-columns: 1fr; }
    .by_c_side { position: static; flex-direction: row; flex-wrap: wrap; }
    .by_c_side .by_c_box:first-child { flex: 1 1 100%; }
    .by_c_side .by_c_box:nth-child(2) { display: none; }
    .by_c_cta { flex: 1 1 100%; display: flex; align-items: center; gap: 16px; }
    .by_c_cta_ic { margin: 0; }
    .by_c_cta strong { margin-top: 0; }
    .by_c_cta p { display: none; }
    .by_c_cta_tel { margin-top: 0; margin-left: auto; }
    .by_c_cta_btn { margin-top: 0; padding: 0 18px; }
    .by_c_tail_grid { grid-template-columns: repeat(3, 1fr); }
    .by_c_tail_grid > :nth-child(4) { display: none; }
}

@media (max-width: 768px) {
    .by_c_in { padding: 0 14px; }
    .by_c_head { flex-wrap: wrap; gap: 12px; padding: 16px; }
    .by_c_head_ic { width: 44px; height: 44px; font-size: 19px; }
    .by_c_head_tt h1 { font-size: 19px; }
    .by_c_head_stat { padding-left: 0; border-left: none; margin-left: auto; text-align: right; }
    .by_c_head_stat b { font-size: 20px; }
    .by_c_chips { padding: 12px 16px; }
    .by_c_bar { padding: 0 8px; }
    .by_c_sort { width: 100%; overflow-x: auto; flex-wrap: nowrap; }
    .by_c_sort_btn { height: 44px; padding: 0 12px; white-space: nowrap; }
    .by_c_count { display: none; }
    .by_c_grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .by_c_tail_grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .by_c_tail_grid > :nth-child(3) { display: none; }
    .by_c_tail_head h3 { font-size: 18px; }
    .by_c_cta { flex-wrap: wrap; }
    .by_c_cta_tel { margin-left: 0; }
    .by_c_cta_btn { width: 100%; }
}

/* ============================================
   搜索页专用（search.blade.php 复用本文件）
   结构：墨蓝搜索条 → 排序条(.by_c_bar) → 商品网格(.by_c_grid) → 底部推荐(.by_c_tail)
   类名前缀：by_s_
   ============================================ */
.by_s_bar { background: var(--by-grad-navy); position: relative; overflow: hidden; }
.by_s_bar::after { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 88% 130%, rgba(245,135,31,.30) 0%, transparent 46%); }
.by_s_bar_in { position: relative; z-index: 1; max-width: 1300px; margin: 0 auto; padding: 26px 20px 24px; display: flex; align-items: center; justify-content: space-between; gap: 26px; flex-wrap: wrap; }
.by_s_bar_tx { min-width: 0; }
.by_s_bar_tx h1 { font-size: 24px; font-weight: 800; color: #fff; letter-spacing: .5px; }
.by_s_bar_tx h1 em { font-style: normal; color: var(--by-orange-light); }
.by_s_bar_tx p { margin-top: 8px; font-size: 13px; color: rgba(255,255,255,.7); }
.by_s_bar_tx p strong { color: #fff; font-weight: 800; font-size: 15px; margin: 0 2px; }

.by_s_form { flex: 0 0 auto; display: flex; align-items: stretch; height: 44px; width: 420px; max-width: 100%; background: #fff; border-radius: var(--by-radius); overflow: hidden; }
.by_s_form input { flex: 1; border: none; outline: none; background: transparent; padding: 0 10px 0 18px; font-size: 14px; color: var(--by-ink); font-family: inherit; min-width: 0; }
.by_s_form input::placeholder { color: var(--by-ink-3); }
.by_s_form button { flex-shrink: 0; display: inline-flex; align-items: center; gap: 7px; padding: 0 24px; border: none; cursor: pointer; background: var(--by-grad-orange); color: #fff; font-size: 14.5px; font-weight: 700; transition: filter .2s; }
.by_s_form button:hover { filter: brightness(1.07); }

.by_s_hot { max-width: 1300px; margin: 0 auto; padding: 14px 20px 0; display: flex; align-items: center; flex-wrap: wrap; gap: 8px 10px; font-size: 12.5px; }
.by_s_hot > span { color: var(--by-ink-3); }
.by_s_hot a { color: var(--by-ink-2); padding: 4px 12px; background: #fff; border: 1px solid var(--by-line); border-radius: var(--by-radius-sm); transition: all .16s; }
.by_s_hot a:hover { background: var(--by-orange); border-color: var(--by-orange); color: #fff; }
.by_s_hot a.active { background: var(--by-blue); border-color: var(--by-blue); color: #fff; }

.by_s_body { max-width: 1300px; margin: 0 auto; padding: 16px 20px 0; }

@media (max-width: 768px) {
    .by_s_bar_in { padding: 20px 14px; gap: 16px; }
    .by_s_bar_tx h1 { font-size: 19px; }
    .by_s_form { width: 100%; height: 42px; }
    .by_s_form button { padding: 0 16px; }
    .by_s_hot { padding: 12px 14px 0; }
    .by_s_body { padding: 14px 14px 0; }
}