/* =====================================================================
   失物招领公示平台 · tech_dark 科技深色设计系统
   统一前台 / 后台 视觉基座（基于 Bootstrap 5.3.3 局部覆盖）
   ===================================================================== */

/* ---------- 1. 设计变量 ---------- */
:root {
    /* 背景层级 */
    --bg:            #0a0e17;
    --bg-glow:       radial-gradient(1200px 600px at 80% -10%, rgba(45,212,191,.10), transparent 60%),
                     radial-gradient(900px 500px at -10% 10%, rgba(56,189,248,.08), transparent 55%);
    --panel:         #121826;
    --panel-2:       #1a2233;
    --panel-3:       #202b40;
    /* 边框 / 分隔 */
    --border:        #263041;
    --border-strong: #364560;
    /* 文字层级 */
    --text:          #e8eef6;
    --text-dim:      #9fb0c3;
    --text-faint:    #66788f;
    /* 主题色（科技青蓝） */
    --accent:        #2dd4bf;
    --accent-2:      #38bdf8;
    --accent-glow:   rgba(45,212,191,.35);
    --accent-grad:   linear-gradient(135deg, #2dd4bf 0%, #38bdf8 100%);
    /* 状态色 */
    --green:         #34d399;
    --amber:         #fbbf24;
    --red:           #f87171;
    --purple:        #a78bfa;
    /* 形状 */
    --r:             12px;
    --r-sm:          8px;
    --r-pill:        999px;
    --shadow:        0 6px 24px rgba(0,0,0,.40);
    --shadow-glow:   0 8px 30px rgba(45,212,191,.18);

    /* 覆盖 Bootstrap 语义变量，使原生组件自动适配深色 */
    --bs-body-bg:        #0a0e17;
    --bs-body-color:     #e8eef6;
    --bs-border-color:   #263041;
    --bs-primary:        #2dd4bf;
    --bs-primary-rgb:    45,212,191;
    --bs-secondary:      #1a2233;
    --bs-secondary-rgb:  26,34,51;
    --bs-success:        #34d399;
    --bs-success-rgb:    52,211,153;
    --bs-warning:        #fbbf24;
    --bs-warning-rgb:    251,191,36;
    --bs-danger:         #f87171;
    --bs-danger-rgb:     248,113,113;
    --bs-emphasis-color: #e8eef6;
}

/* ---------- 2. 基础 ---------- */
* { box-sizing: border-box; }

html {
    background: var(--bg);
}

body {
    background: none;
    color: var(--text);
    font-family: "Segoe UI", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-2); text-decoration: none; }
a:hover { color: var(--accent); }

/* 滚动条 */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #2a3548; border-radius: 8px; }
::-webkit-scrollbar-thumb:hover { background: #364560; }

/* ---------- 3. 通用面板 / 卡片 ---------- */
.panel {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--r);
    box-shadow: var(--shadow);
}

.muted { color: var(--text-dim); }
.faint { color: var(--text-faint); }

/* ---------- 4. 按钮（覆盖 Bootstrap） ---------- */
.btn { border-radius: var(--r-sm); font-weight: 600; transition: all .18s ease; }
.btn:focus, .btn:focus-visible { box-shadow: 0 0 0 .2rem var(--accent-glow); }

.btn-primary {
    background: var(--accent-grad); border: none; color: #04201c;
    background-size: 160% 160%;
}
.btn-primary:hover { color: #04201c; filter: brightness(1.08); transform: translateY(-1px); box-shadow: var(--shadow-glow); }
.btn-primary:active { transform: translateY(0); }

.btn-success { background: var(--green); border-color: var(--green); color: #04231a; }
.btn-success:hover { background: #2bbd87; border-color: #2bbd87; color: #04231a; box-shadow: 0 6px 20px rgba(52,211,153,.25); }

.btn-warning { background: var(--amber); border-color: var(--amber); color: #2a1d00; }
.btn-warning:hover { background: #eab308; border-color: #eab308; color: #2a1d00; }

.btn-danger { background: var(--red); border-color: var(--red); color: #2a0808; }
.btn-danger:hover { background: #ef4444; border-color: #ef4444; }

.btn-secondary { background: var(--panel-3); border-color: var(--border-strong); color: var(--text-dim); }
.btn-secondary:hover { background: #28344c; color: var(--text); }

.btn-outline-secondary { border-color: var(--border-strong); color: var(--text-dim); }
.btn-outline-secondary:hover { background: var(--panel-2); color: var(--text); border-color: var(--accent); }

.btn-outline-light { border-color: var(--border-strong); color: var(--text-dim); }
.btn-outline-light:hover { color: var(--text); border-color: var(--accent); background: rgba(45,212,191,.08); }

.btn-sm { border-radius: var(--r-sm); }

/* ---------- 5. 表单控件（覆盖 Bootstrap） ---------- */
.form-label { color: var(--text-dim); font-weight: 600; font-size: 13px; margin-bottom: 6px; }
.form-control, .form-select {
    /* 注意：这里必须用 background-color 长属性。用 background 简写会把 Bootstrap .form-select 的
       background-repeat:no-repeat / background-position / background-size 一并重置为默认值（repeat），
       导致下拉箭头 SVG 被平铺成"一排箭头"。 */
    background-color: var(--panel-2);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: var(--r-sm);
    transition: border-color .15s, box-shadow .15s;
}
.form-control::placeholder { color: var(--text-faint); }
.form-control:focus, .form-select:focus {
    background-color: var(--panel-2);
    border-color: var(--accent);
    color: var(--text);
    box-shadow: 0 0 0 .2rem var(--accent-glow);
}
.form-control:disabled, .form-control[readonly] { background-color: var(--panel); color: var(--text-faint); }
.form-select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='%239fb0c3' d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right .625rem center;
    background-size: 12px 9px;
    padding-right: 2rem;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}
.form-check-input { background-color: var(--panel-2); border-color: var(--border-strong); }
.form-check-input:checked { background-color: var(--accent); border-color: var(--accent); }
.form-check-label { color: var(--text-dim); font-size: 13px; }
.form-text { color: var(--text-faint); font-size: 12px; }

/* ---------- 6. 模态框（覆盖 Bootstrap） ---------- */
.modal-content {
    background: var(--panel);
    border: 1px solid var(--border-strong);
    border-radius: var(--r);
    box-shadow: 0 20px 60px rgba(0,0,0,.6);
}
.modal-header { border-bottom: 1px solid var(--border); padding: 16px 20px; }
.modal-title { color: var(--text); font-weight: 700; letter-spacing: .5px; }
.modal-body { padding: 20px; }
.modal-footer { border-top: 1px solid var(--border); padding: 14px 20px; }
.modal .btn-close { filter: invert(1) grayscale(100%) brightness(200%); opacity: .7; }
.modal .btn-close:hover { opacity: 1; }
.modal .form-text { font-size: 12px; }

/* =====================================================================
   前台（失物招领公示）
   ===================================================================== */

/* ---------- 7. 顶部标题栏 ---------- */
.site-header {
    position: sticky; top: 0; z-index: 1030;
    background: rgba(10,14,23,.85);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}
.site-header-inner {
    max-width: 1400px; margin: 0 auto;
    display: flex; align-items: center; justify-content: space-between;
    padding: 12px 20px;
}
.site-logo {
    display: flex; align-items: center; gap: 10px;
    font-size: 19px; font-weight: 800; letter-spacing: 1.5px; color: var(--text);
}
.site-logo:hover { color: var(--text); }
.site-logo .logo-img {
    width: 40px; height: 40px; max-width: 40px; max-height: 40px;
    flex-shrink: 0; aspect-ratio: 1 / 1;
    border-radius: 10px;            /* 四角圆角 */
    object-fit: contain; display: block;
    box-shadow: var(--shadow-glow);
    background: var(--panel-2);
}
.site-logo .logo-text { line-height: 1.1; }

/* 顶部右侧操作按钮组 */
.header-actions {
    display: flex; align-items: center; gap: 10px;
    flex-wrap: wrap; justify-content: flex-end;
}
.header-actions .btn {
    padding: 8px 16px; font-size: 14px; white-space: nowrap;
}
@media (max-width: 767px) {
    .site-header-inner { padding: 9px 12px; gap: 8px; }
    .site-logo { font-size: 16px; gap: 8px; }
    .site-logo .logo-img { width: 34px; height: 34px; max-width: 34px; max-height: 34px; border-radius: 8px; }
    .header-actions { gap: 6px; }
    .header-actions .btn { padding: 6px 10px; font-size: 12px; }
}

/* ---------- 独立发布/领取页面 ---------- */
.publish-page {
    display: flex; justify-content: center;
    padding: 18px 0 24px;
}
.publish-card {
    width: 100%; max-width: 620px;
    background: var(--panel, #1c2740);
    border: 1px solid var(--border-strong, #33415e);
    border-radius: 14px;
    padding: 22px 24px 24px;
    box-shadow: var(--shadow-glow, 0 0 0 rgba(0,0,0,0));
}
.publish-title {
    font-size: 20px; font-weight: 700; color: var(--text, #eaf2ff);
    margin: 0 0 18px; padding-bottom: 12px;
    border-bottom: 1px solid var(--border-strong, #33415e);
}
.publish-card .form-label { color: var(--text-dim, #9fb2d4); margin-bottom: 4px; }
.publish-card .form-control,
.publish-card .form-select {
    background-color: var(--panel-2, #14203a);
    border: 1px solid var(--border-strong, #33415e);
    color: var(--text, #eaf2ff);
}
.publish-card .form-control:focus,
.publish-card .form-select:focus {
    border-color: var(--accent, #2dd4bf);
    box-shadow: 0 0 0 .2rem rgba(45, 212, 191, .18);
}
.publish-card textarea.form-control { resize: vertical; }
.publish-card .form-check-input { accent-color: var(--accent, #2dd4bf); }
.publish-card .form-check-label { color: var(--text-dim, #9fb2d4); }
.publish-card #cl_info {
    background: var(--panel-2, #14203a);
    border-color: var(--border-strong, #33415e) !important;
    color: var(--text-dim, #9fb2d4);
    font-size: 13px; line-height: 1.7;
}
.publish-actions {
    display: flex; gap: 12px; justify-content: flex-end;
    margin-top: 22px; padding-top: 16px;
    border-top: 1px solid var(--border-strong, #33415e);
}
.publish-actions .btn { min-width: 96px; }

/* 发布成功页 */
.success-card { text-align: center; padding: 36px 28px 28px; }
.success-icon {
    font-size: 64px; line-height: 1; margin-bottom: 14px;
    filter: drop-shadow(0 6px 16px rgba(45, 212, 191, .35));
}
.success-title {
    font-size: 24px; font-weight: 800; color: var(--text, #eaf2ff);
    margin: 0 0 18px; padding-bottom: 0; border-bottom: none;
}
.success-no {
    display: inline-block;
    font-size: 16px; padding: 10px 20px; margin-bottom: 16px;
    background: var(--panel-2, #14203a);
    border: 1px solid var(--border-strong, #33415e);
    border-radius: 10px;
}
.success-no-label { color: var(--text-dim, #9fb2d4); }
.success-no-value { color: var(--accent, #2dd4bf); font-weight: 800; letter-spacing: 1px; }
.success-tip {
    font-size: 14px; color: var(--text-dim, #9fb2d4);
    line-height: 1.7; margin: 0 auto 6px; max-width: 420px;
}

/* 分区标题 */
.form-section { margin-bottom: 20px; padding-bottom: 18px; border-bottom: 1px dashed var(--border, #33415e); }
.form-section:last-of-type { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.section-h {
    font-size: 14px; font-weight: 700; color: var(--accent, #2dd4bf);
    margin-bottom: 12px; padding-left: 10px; border-left: 3px solid var(--accent, #2dd4bf);
}
.form-hint { font-size: 12px; color: var(--text-faint, #8aa0bd); margin-top: 6px; }

/* 多照片上传 */
.photo-uploader { display: flex; flex-wrap: wrap; gap: 10px; }
.photo-thumbs { display: flex; flex-wrap: wrap; gap: 10px; }
.photo-thumb {
    position: relative; width: 84px; border-radius: 10px; overflow: hidden;
    border: 1px solid var(--border-strong, #33415e); background: var(--panel-2, #14203a);
    display: flex; flex-direction: column;
}
.photo-thumb img { width: 100%; height: 84px; object-fit: cover; display: block; }
.photo-thumb .thumb-del {
    position: absolute; top: 2px; right: 4px; width: 18px; height: 18px; line-height: 16px; text-align: center;
    background: rgba(0,0,0,.6); color: #fff; border-radius: 50%; cursor: pointer; font-size: 13px; z-index: 2;
}
.photo-thumb .thumb-name {
    font-size: 10px; color: #cdd9ec; background: rgba(0,0,0,.35); padding: 1px 3px;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.photo-thumb .thumb-default {
    display: flex; align-items: center; gap: 3px; font-size: 10px; color: #9fb3d1;
    padding: 2px 4px; cursor: pointer; background: rgba(255,255,255,.04);
}
.photo-thumb .thumb-default.active { color: #4ade80; background: rgba(74,222,128,.12); }
.photo-thumb .thumb-default input { margin: 0; }
.photo-add {
    width: 84px; height: 84px; border-radius: 10px; border: 1.5px dashed var(--border-strong, #33415e);
    display: flex; align-items: center; justify-content: center; cursor: pointer; color: var(--text-faint, #8aa0bd);
    background: rgba(255,255,255,.02); transition: all .15s;
}
.photo-add:hover { border-color: var(--accent, #2dd4bf); color: var(--accent, #2dd4bf); }
.photo-add .plus { font-size: 32px; line-height: 1; }

/* 存放位置只读（二维码定位） */
.loc-readonly {
    padding: 10px 14px; border-radius: 8px; font-size: 14px;
    background: var(--panel-2, #14203a); border: 1px solid var(--border-strong, #33415e); color: var(--text-dim, #9fb2d4);
}
.loc-readonly.active { color: var(--text, #eaf2ff); border-color: var(--accent, #2dd4bf); }

/* 「我捡到了」引导弹窗 */
.guide-msg {
    color: var(--text, #eaf2ff);
    font-size: 14px; line-height: 1.9;
    margin: 0 0 16px;
    padding: 12px 14px;
    background: var(--panel-2, #14203a);
    border: 1px solid var(--border, #33415e);
    border-left: 3px solid var(--accent, #38bdf8);
    border-radius: 8px;
}
.guide-locs { display: flex; flex-wrap: wrap; gap: 8px; }
.guide-locs .loc-tag {
    display: inline-block;
    padding: 5px 12px;
    font-size: 13px;
    color: var(--text, #eaf2ff);
    background: rgba(56,189,248,.12);
    border: 1px solid rgba(56,189,248,.35);
    border-radius: 999px;
}
.guide-locs .text-faint { color: var(--text-faint, #8aa0bd); }
.guide-steps {
    margin: 0;
    padding-left: 22px;
    color: var(--text, #eaf2ff);
    font-size: 14px; line-height: 2;
}
.guide-steps li { margin-bottom: 6px; }

/* 前台内容容器 */
.site-main { max-width: 1400px; margin: 0 auto; padding: 10px 20px 20px 20px; background: #293757; border-radius: 12px; }

/* ---------- 8. 顶部导航（页面切换） ---------- */
.main-nav {
    display: flex; flex-wrap: wrap; gap: 8px;
    margin-bottom: 14px;
}
.main-nav .nav-link {
    color: var(--text-dim); font-weight: 600; font-size: 14px;
    padding: 9px 20px; border-radius: var(--r-pill, 999px);
    border: 1px solid var(--border-strong);
    background: var(--panel-2);
    transition: all .18s;
}
.main-nav .nav-link:hover {
    color: var(--text);
    border-color: var(--accent);
    background: rgba(45, 212, 191, .10);
}
.main-nav .nav-link.active {
    color: #04201c; font-weight: 700;
    border-color: transparent;
    background: var(--accent-grad);
    box-shadow: var(--shadow-glow);
}

/* ---------- 9. 卡片网格 + 物品卡 ---------- */
.card-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
}
@media (max-width: 1199px) { .card-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 767px) { .card-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; } }

.item-card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--r);
    overflow: hidden;
    display: flex; flex-direction: column;
    box-shadow: var(--shadow);
    transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}
.item-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    box-shadow: var(--shadow-glow);
}
.item-card .thumb {
    width: 100%; aspect-ratio: 4 / 5; object-fit: cover;
    background: var(--panel-2) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='48' height='48' viewBox='0 0 24 24' fill='none' stroke='%2366788f' stroke-width='1.5'%3E%3Crect x='3' y='3' width='18' height='18' rx='2'/%3E%3Ccircle cx='8.5' cy='8.5' r='1.5'/%3E%3Cpath d='m21 15-5-5L5 21'/%3E%3C/svg%3E") center / 40px no-repeat;
    border-bottom: 1px solid var(--border);
}
.item-card .body { padding: 12px 14px; font-size: 13px; }
.item-card .no {
    color: var(--text-faint); font-size: 12px;
    font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
    letter-spacing: .3px;
}
.item-card .name {
    font-weight: 700; color: var(--text); margin: 4px 0 8px;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.item-card .time { color: var(--text-faint); font-size: 12px; margin-top: 4px; }

/* ---------- 遗失公示列表卡（小图，横向布局） ---------- */
.lost-card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--r);
    overflow: hidden;
    display: flex; align-items: stretch; gap: 12px;
    padding: 10px;
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease;
}
.lost-card:hover {
    transform: translateY(-3px);
    border-color: var(--accent);
    box-shadow: var(--shadow-glow);
}
.lost-thumb {
    flex: 0 0 84px; width: 84px; height: 84px;
    border-radius: 10px; overflow: hidden;
    background: var(--panel-2);
    display: flex; align-items: center; justify-content: center;
}
.lost-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.lost-thumb--empty { flex-direction: column; color: var(--text-faint); font-size: 11px; gap: 2px; }
.lost-thumb--empty span { font-size: 10px; }
.lost-body { flex: 1; min-width: 0; padding: 2px 2px; display: flex; flex-direction: column; gap: 6px; }
.lost-head { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; }
.lost-name { font-weight: 700; color: var(--text); }
.lost-desc {
    color: var(--text-dim); font-size: 12.5px; line-height: 1.45;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.lost-loc { color: var(--text-faint); font-size: 12px; }
.lost-loc-row {
    display: flex; align-items: center; justify-content: space-between; gap: 8px;
    min-width: 0;
}
.lost-loc-row .lost-loc { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lost-date { color: var(--text-faint); font-size: 11.5px; white-space: nowrap; flex: 0 0 auto; opacity: .9; }

/* ---------- 遗失详情弹窗 ---------- */
.lost-detail { display: flex; flex-direction: column; gap: 2px; }
.ld-photo { position: relative; text-align: center; margin-bottom: 10px; }
.ld-photo img {
    max-width: 100%; max-height: 240px; border-radius: 12px;
    border: 1px solid var(--border); object-fit: contain; background: var(--panel-2);
}
.ld-nav {
    position: absolute; top: 50%; transform: translateY(-50%);
    width: 34px; height: 34px; border-radius: 50%; border: none;
    background: rgba(0,0,0,.45); color: #fff; font-size: 22px; line-height: 1;
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    transition: background .15s;
}
.ld-nav:hover { background: rgba(0,0,0,.72); }
.ld-prev { left: 8px; }
.ld-next { right: 8px; }
.ld-count {
    position: absolute; bottom: 8px; left: 50%; transform: translateX(-50%);
    background: rgba(0,0,0,.5); color: #fff; font-size: 12px;
    padding: 2px 10px; border-radius: 999px;
}
.ld-row {
    display: flex; gap: 12px; padding: 8px 4px;
    border-bottom: 1px dashed var(--border);
}
.ld-row:last-child { border-bottom: none; }
.ld-label { flex: 0 0 116px; color: var(--text-faint); font-size: 13px; }
.ld-val { flex: 1; color: var(--text); font-size: 13.5px; word-break: break-word; }

/* ---------- 领取页：搜索结果 / 选中态 / 物品详情 ---------- */
.claim-results { grid-template-columns: repeat(3, 1fr); margin: 4px 0 18px; }
@media (max-width: 767px) { .claim-results { grid-template-columns: repeat(2, 1fr); } }
.claim-results .item-card { cursor: pointer; }
.item-card.selected {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent), var(--shadow-glow);
}
.claim-info {
    background: var(--panel-2, #14203a);
    border: 1px solid var(--border-strong, #33415e);
    border-radius: 10px;
    padding: 12px 14px;
    color: var(--text-dim, #9fb2d4);
    font-size: 13px; line-height: 1.8;
}
.claim-info b { color: var(--text, #eaf2ff); font-weight: 600; }
.claim-empty { color: var(--text-faint); font-size: 13px; padding: 6px 0 14px; }

/* ---------- 10. 状态徽标 ---------- */
.badge-tag {
    display: inline-block; padding: 2px 9px; border-radius: var(--r-pill);
    font-size: 11px; font-weight: 700; line-height: 1.6;
    background: rgba(56,189,248,.14); color: var(--accent-2);
    border: 1px solid rgba(56,189,248,.30);
}
.badge-claimed {
    background: rgba(52,211,153,.15); color: var(--green);
    border: 1px solid rgba(52,211,153,.32);
}
.badge-lost {
    background: rgba(251,191,36,.15); color: var(--amber);
    border: 1px solid rgba(251,191,36,.32);
}
.badge-dot { display: inline-flex; align-items: center; gap: 5px; }
.badge-dot::before {
    content: ""; width: 7px; height: 7px; border-radius: 50%;
    background: currentColor; box-shadow: 0 0 6px currentColor;
}

/* ---------- 11. 列表状态（骨架 / 空 / 到底） ---------- */
.skeleton-card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--r);
    overflow: hidden;
}
.skeleton-card .sk-thumb { aspect-ratio: 4/5; background: linear-gradient(100deg, #161d2b 30%, #1f293c 50%, #161d2b 70%); background-size: 200% 100%; animation: sk 1.2s infinite; }
.skeleton-card .sk-line { height: 10px; margin: 10px 14px; border-radius: 6px; background: linear-gradient(100deg, #161d2b 30%, #1f293c 50%, #161d2b 70%); background-size: 200% 100%; animation: sk 1.2s infinite; }
.skeleton-card .sk-line.short { width: 50%; }
@keyframes sk { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

.empty-state {
    grid-column: 1 / -1;
    text-align: center; padding: 50px 20px; color: var(--text-faint);
}
.empty-state .empty-icon {
    font-size: 46px; margin-bottom: 12px; opacity: .6;
    filter: drop-shadow(0 0 12px var(--accent-glow));
}
.empty-state .empty-text { font-size: 14px; }
.empty-state .empty-sub { font-size: 12px; margin-top: 4px; color: var(--text-faint); }

.list-end {
    grid-column: 1 / -1;
    text-align: center; padding: 18px; color: var(--text-faint); font-size: 12px;
    letter-spacing: 1px;
}
.list-end::before, .list-end::after { content: "·"; margin: 0 10px; color: var(--accent); }

/* ---------- 12. 回到顶部 ---------- */
#backTop {
    position: fixed; right: 22px; bottom: 22px; z-index: 1040;
    width: 44px; height: 44px; border-radius: 50%;
    background: var(--accent-grad); color: #04201c; border: none;
    font-size: 20px; cursor: pointer; display: none;
    box-shadow: var(--shadow-glow);
    transition: transform .18s, opacity .18s;
}
#backTop:hover { transform: translateY(-3px); }
#backTop.show { display: block; animation: fadeUp .25s ease; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* =====================================================================
   后台（管理端）
   ===================================================================== */

/* ---------- 13. 后台框架 ---------- */
.admin-body { display: flex; min-height: 100vh; }

.admin-sidebar {
    width: 232px; flex-shrink: 0;
    background: linear-gradient(180deg, #0e1422 0%, #0a0e17 100%);
    border-right: 1px solid var(--border);
    display: flex; flex-direction: column;
    position: sticky; top: 0; height: 100vh;
    transition: transform .25s ease;
    z-index: 1040;
}
.admin-brand {
    display: flex; align-items: center; gap: 10px;
    padding: 18px 18px; font-weight: 800; color: var(--text);
    border-bottom: 1px solid var(--border);
}
.admin-brand .logo-mark {
    width: 30px; height: 30px; border-radius: 8px; flex-shrink: 0;
    background: var(--accent-grad); display: grid; place-items: center;
    color: #04201c; font-size: 15px; font-weight: 900; box-shadow: var(--shadow-glow);
}
.admin-brand small { display: block; color: var(--text-faint); font-size: 11px; font-weight: 500; }

.admin-nav { padding: 12px 10px; overflow-y: auto; flex: 1; }
.nav-group-title {
    padding: 14px 12px 6px; color: var(--text-faint);
    font-size: 11px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase;
}
.admin-nav a {
    display: flex; align-items: center; gap: 11px;
    color: var(--text-dim); padding: 10px 13px; margin: 2px 0;
    border-radius: var(--r-sm); text-decoration: none; font-size: 14px;
    transition: all .15s;
}
.admin-nav a .nav-ico {
    width: 18px; text-align: center; font-size: 15px; opacity: .9;
}
.admin-nav a:hover { background: var(--panel-2); color: var(--text); }
.admin-nav a.active {
    background: linear-gradient(90deg, rgba(45,212,191,.18), rgba(45,212,191,.02));
    color: var(--accent); font-weight: 700;
    box-shadow: inset 3px 0 0 var(--accent);
}

.admin-main { flex: 1; display: flex; flex-direction: column; min-width: 0; }

.admin-topbar {
    position: sticky; top: 0; z-index: 1030;
    display: flex; align-items: center; gap: 14px;
    padding: 12px 22px;
    background: rgba(10,14,23,.85); backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}
.sidebar-toggle {
    display: none; background: var(--panel-2); border: 1px solid var(--border);
    color: var(--text-dim); width: 38px; height: 34px; border-radius: var(--r-sm);
    cursor: pointer; font-size: 16px;
}
.sidebar-toggle:hover { color: var(--text); border-color: var(--accent); }
.admin-breadcrumb { color: var(--text-faint); font-size: 13px; }
.admin-breadcrumb b { color: var(--text); font-weight: 600; }
.admin-user { margin-left: auto; display: flex; align-items: center; gap: 14px; color: var(--text-dim); font-size: 13px; }
.admin-user .u-name { color: var(--text); font-weight: 600; }
.admin-user a { color: var(--text-dim); }
.admin-user a:hover { color: var(--accent); }
/* 右上角【平台首页】按钮：新窗口打开前台 */
.admin-user .btn-home {
    display: inline-flex; align-items: center; gap: 5px;
    padding: 6px 12px; border-radius: var(--r-sm);
    border: 1px solid var(--border-strong);
    background: var(--panel-2);
    color: var(--text-dim); font-size: 13px; line-height: 1;
    text-decoration: none; white-space: nowrap;
    transition: color .15s, border-color .15s, background .15s;
}
.admin-user .btn-home:hover {
    color: var(--accent); border-color: var(--accent);
    background: rgba(45,212,191,.08);
}

.admin-content { padding: 22px; flex: 1; }

/* 移动端遮罩 */
.admin-backdrop {
    display: none; position: fixed; inset: 0; z-index: 1035;
    background: rgba(0,0,0,.5); backdrop-filter: blur(2px);
}

/* ---------- 14. 后台页面通用件 ---------- */
.page-head { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.page-title { font-size: 20px; font-weight: 800; color: var(--text); margin: 0; letter-spacing: .5px; }
.page-title .bar { display: inline-block; width: 4px; height: 18px; background: var(--accent-grad); border-radius: 2px; margin-right: 10px; vertical-align: -3px; }
.page-sub { color: var(--text-faint); font-size: 13px; }

/* 统计卡 */
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 18px; }
@media (max-width: 991px) { .stat-row { grid-template-columns: repeat(2, 1fr); } }
.stat-card {
    background: var(--panel); border: 1px solid var(--border);
    border-radius: var(--r); padding: 16px 18px; position: relative; overflow: hidden;
}
.stat-card::after {
    content: ""; position: absolute; right: -20px; top: -20px;
    width: 80px; height: 80px; border-radius: 50%;
    background: radial-gradient(circle, var(--accent-glow), transparent 70%); opacity: .5;
}
.stat-card .s-label { color: var(--text-dim); font-size: 13px; }
.stat-card .s-value { font-size: 28px; font-weight: 800; color: var(--text); margin-top: 6px; letter-spacing: .5px; }
.stat-card .s-value.accent { color: var(--accent); }
.stat-card .s-value.green { color: var(--green); }
.stat-card .s-value.amber { color: var(--amber); }

/* 筛选 / 表单 卡片 */
.toolbar-card {
    background: var(--panel); border: 1px solid var(--border);
    border-radius: var(--r); padding: 16px 18px; margin-bottom: 16px;
}
.toolbar-card .row { --bs-gutter-x: 14px; }
.toolbar-actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: flex-end; }

/* ---------- 15. 表格（覆盖 Bootstrap .table） ---------- */
.table { color: var(--text); margin: 0; }
.table > :not(caption) > * > * { background: transparent; border-bottom-color: var(--border); padding: 12px 14px; }
.table thead th {
    color: var(--text-dim); font-weight: 700; font-size: 12px; letter-spacing: .5px;
    border-bottom: 1px solid var(--border-strong); white-space: nowrap;
}
.table tbody tr { transition: background .15s; }
.table tbody tr:hover { background: var(--panel-2); }
.table td { vertical-align: middle; font-size: 13px; }
.table .thumb-sm {
    width: 52px; height: 40px; object-fit: cover; border-radius: 6px;
    border: 1px solid var(--border); background: var(--panel-2);
}
.cell-no { font-family: ui-monospace, monospace; color: var(--text-dim); font-size: 12px; }
.cell-name { font-weight: 600; color: var(--text); }
.cell-sub { color: var(--text-faint); font-size: 12px; }

/* 二维码弹窗 */
.qr-box {
    display: inline-block; padding: 14px; border-radius: 10px;
    background: #fff; line-height: 0; box-shadow: 0 4px 18px rgba(0,0,0,.35);
}
.qr-box img { width: 240px; height: 240px; }
.qr-url { margin-top: 12px; font-size: 12px; color: var(--text-faint); word-break: break-all; }

/* 表格操作按钮组 */
.row-actions { display: flex; gap: 6px; }
.btn-ico {
    display: inline-flex; align-items: center; gap: 5px;
    padding: 5px 11px; border-radius: var(--r-sm); font-size: 12px; font-weight: 600;
    border: 1px solid var(--border-strong); background: var(--panel-2); color: var(--text-dim);
    cursor: pointer; transition: all .15s;
}
.btn-ico:hover { color: var(--text); border-color: var(--accent); background: rgba(45,212,191,.08); }
.btn-ico.info:hover { border-color: var(--accent-2); color: var(--accent-2); background: rgba(56,189,248,.08); }
.btn-ico.danger:hover { border-color: var(--red); color: var(--red); background: rgba(248,113,113,.08); }

/* 分页 */
.pager { display: flex; gap: 8px; align-items: center; margin-top: 16px; }
.pager .pbtn {
    padding: 7px 14px; border-radius: var(--r-sm); border: 1px solid var(--border-strong);
    background: var(--panel-2); color: var(--text-dim); cursor: pointer; font-size: 13px;
}
.pager .pbtn:hover:not(:disabled) { color: var(--accent); border-color: var(--accent); }
.pager .pbtn:disabled { opacity: .4; cursor: not-allowed; }
.pager .pinfo { color: var(--text-faint); font-size: 13px; margin: 0 6px; }

/* ---------- 16. 详情弹窗 ---------- */
.detail-grid { display: grid; grid-template-columns: 160px 1fr; gap: 12px 18px; }
.detail-grid .d-label { color: var(--text-dim); font-weight: 600; font-size: 13px; }
.detail-grid .d-value { color: var(--text); font-size: 13px; }
.detail-photo { width: 100%; max-height: 240px; object-fit: contain; border-radius: var(--r-sm); border: 1px solid var(--border); background: var(--panel-2); }
@media (max-width: 575px) { .detail-grid { grid-template-columns: 1fr; } }

/* ---------- 17. 登录 / 改密 页 ---------- */
.auth-wrap {
    min-height: 100vh; display: grid; place-items: center; padding: 20px;
    background: var(--bg); background-image: var(--bg-glow);
}
.auth-card {
    width: 100%; max-width: 400px;
    background: var(--panel); border: 1px solid var(--border-strong);
    border-radius: var(--r); box-shadow: var(--shadow); padding: 30px 28px;
    position: relative; overflow: hidden;
}
.auth-card::before {
    content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: var(--accent-grad);
}
.auth-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 20px; }
.auth-logo .logo-mark {
    width: 38px; height: 38px; border-radius: 9px; background: var(--accent-grad);
    display: grid; place-items: center; color: #04201c; font-weight: 900; font-size: 18px;
    box-shadow: var(--shadow-glow);
}
.auth-logo h1 { font-size: 18px; font-weight: 800; color: var(--text); margin: 0; }
.auth-logo p { font-size: 12px; color: var(--text-faint); margin: 0; }
.auth-card .form-control { margin-bottom: 14px; }
.auth-tip { color: var(--text-faint); font-size: 12px; text-align: center; margin-top: 14px; }

/* ---------- 18. 工具类 ---------- */
.mt-16 { margin-top: 16px; }
.flex-end { display: flex; justify-content: flex-end; gap: 8px; }
.nowrap { white-space: nowrap; }

/* ---------- 19. 响应式：后台移动端 ---------- */
@media (max-width: 767px) {
    .admin-sidebar {
        position: fixed; left: 0; top: 0;
        transform: translateX(-100%);
        box-shadow: 0 0 40px rgba(0,0,0,.6);
    }
    .admin-sidebar.open { transform: translateX(0); }
    .admin-backdrop.show { display: block; }
    .sidebar-toggle { display: inline-flex; align-items: center; justify-content: center; }
    .stat-row { grid-template-columns: repeat(2, 1fr); }
    .admin-content { padding: 16px; }
    .table-responsive { border: 1px solid var(--border); border-radius: var(--r); }
}

/* ---------- 8b. 顶部导航行 + 筛选按钮 ---------- */
.main-nav-row {
    display: flex; align-items: center; justify-content: space-between;
    gap: 12px; flex-wrap: wrap; margin-bottom: 14px;
}
.btn-filter {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 16px; font-size: 14px; font-weight: 600;
    color: var(--text); background: var(--panel-2);
    border: 1px solid var(--border-strong); border-radius: var(--r-pill, 999px);
    transition: all .18s; white-space: nowrap;
}
.btn-filter:hover { border-color: var(--accent); color: var(--accent); }
.btn-filter .fi { color: var(--accent); }

/* 筛选状态条 */
.filter-bar {
    display: flex; align-items: center; justify-content: space-between;
    gap: 10px; margin-bottom: 12px; padding: 8px 14px;
    background: var(--panel-2); border: 1px solid var(--border); border-radius: 10px;
}
.filter-summary { color: var(--text-dim); font-size: 13px; }
.filter-clear { background: none; border: none; color: var(--accent); font-size: 13px; cursor: pointer; padding: 0; }
.filter-clear:hover { text-decoration: underline; }

/* 筛选弹窗：分类树 */
.filter-cats { max-height: 46vh; overflow: auto; padding-right: 6px; }
.cat-group { border: 1px solid var(--border); border-radius: 10px; padding: 8px 10px; margin-bottom: 8px; background: var(--panel-2); }
.cat-parent { display: flex; align-items: center; justify-content: space-between; gap: 8px; cursor: pointer; }
.cat-parent-label { display: flex; align-items: center; gap: 8px; font-weight: 600; color: var(--text); margin: 0; cursor: pointer; }
.cat-toggle { color: var(--text-faint); font-size: 12px; user-select: none; }
.cat-children { display: grid; grid-template-columns: repeat(2, 1fr); gap: 4px 14px; margin-top: 8px; padding-left: 24px; }
.cat-children.collapsed { display: none; }
.cat-child { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text-dim); margin: 0; }
.cat-count { color: var(--accent, #4da3ff); font-size: 12px; font-weight: 500; margin-left: 2px; }

/* 分类徽标（招领卡片上的分类） */
.badge-cat { background: rgba(96,165,250,.15); color: #93c5fd; border: 1px solid rgba(96,165,250,.35); }

/* ---------- 8c. 后台：配置分类 ---------- */
.cat-panel-head {
    display: flex; align-items: center; justify-content: space-between;
    gap: 10px; padding: 12px 14px; border-bottom: 1px solid var(--border);
}
.cat-top-name { font-weight: 700; color: var(--text); }
.cat-top-ico { color: var(--accent); margin-right: 6px; }
.cat-add-child { padding: 10px 14px; border-bottom: 1px solid var(--border); }
.empty-sub { color: var(--text-faint); font-size: 13px; text-align: center; padding: 10px; }
.alert-danger { background: rgba(248,113,113,.12); border: 1px solid rgba(248,113,113,.40); color: #fca5a5; }

@media (max-width: 767px) {
    .main-nav-row { gap: 8px; }
    .btn-filter { padding: 6px 12px; font-size: 12px; }
    .cat-children { grid-template-columns: 1fr; padding-left: 18px; }
}