/* ============================================================
   app.css (全站共享样式) — 校友互助留言板
   来源: header.php <style>
   规范: 全站共享样式只进本文件，页面内联 <style> 一律禁止（2026-09-08 大A 定）
   ============================================================ */

:root{
  --brand:#0b8fe0; --cyan:#26c6f2; --grad:linear-gradient(135deg,#0b8fe0,#26c6f2);
  --ink:#1c2733; --muted:#7a8898; --line:#e3e9f1; --bg:#eef2f7; --card:#fff;
  --hd1:#0b1322; --hd2:#101d33; --hd-line:#26344d; --hd-ink:#c9d6e8;
  --ask:#e2622b; --askbg:#fdeee5; --give:#0b8a4c; --givebg:#e8f6ef; --burn:#d6336c; --burnbg:#fdebf1;
  --rad:12px; --rad-s:9px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{overflow-y:scroll}      /* 永远为垂直滚动条预留位置 → 跨页面无水平 CLS */
body{overflow-x:hidden;font:14px/1.6 -apple-system,BlinkMacSystemFont,"PingFang SC","Segoe UI","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--ink);min-height:100vh;display:flex;flex-direction:column}
a{color:var(--brand);text-decoration:none}
a:hover{opacity:.85}
/* ---- header ---- */
.site-head{background:linear-gradient(135deg,var(--hd1),var(--hd2));color:var(--hd-ink);position:sticky;top:0;z-index:50}
.head-in{max-width:1180px;margin:0 auto;display:flex;align-items:center;gap:18px;padding:0 18px;height:60px}
.brand{display:flex;align-items:center;gap:10px;color:#fff}
.logo{width:34px;height:34px;border-radius:10px;background:var(--grad);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;font-size:17px;flex:none}
.brand b{font-size:16px;letter-spacing:.5px}
.brand small{display:block;font-size:10px;color:#7d8ea8;letter-spacing:1px}
.head-nav{display:flex;gap:4px;margin-left:auto}
.head-nav a{color:var(--hd-ink);padding:7px 13px;border-radius:8px;font-size:13.5px}
.head-nav a.on{color:#fff;background:rgba(255,255,255,.08)}
.head-nav a.dot{position:relative}
.head-nav a .p1{position:absolute;top:0;right:0;min-width:15px;padding:1px 4px;background:#ff5d7e;color:#fff;font-size:9.5px;line-height:1.2;border-radius:8px;font-weight:600;text-align:center}
.head-side{display:flex;align-items:center;gap:10px}
.lang-sw{background:rgba(255,255,255,.07);border:1px solid var(--hd-line);color:var(--hd-ink);padding:5px 11px;border-radius:999px;font-size:12px;cursor:pointer}
.user-chip{display:flex;align-items:center;gap:8px;color:#fff}
.avatar{width:30px;height:30px;border-radius:50%;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:600;flex:none}
.avatar.gray{background:#b8c4d4;color:#fff}
.user-chip .nm{line-height:1.25;font-size:13px;max-width:130px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.user-chip small{display:block;color:#9fb0c8;font-size:10px}
.btn{border:0;border-radius:var(--rad-s);padding:8px 15px;font-size:13.5px;cursor:pointer;transition:.15s}
.btn-pri{background:var(--grad);color:#fff}
.btn-pri:hover{opacity:.9}
.btn-ghost{background:transparent;border:1px solid var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-sm{padding:5px 11px;font-size:12.5px}
.btn-xs{padding:3px 9px;font-size:12px}
.burger{display:none;background:rgba(255,255,255,.07);border:1px solid var(--hd-line);color:#fff;border-radius:8px;padding:6px 10px;font-size:16px}
/* 移动菜单 */
.mnav{display:none;flex-direction:column;padding:4px 18px 14px;border-top:1px solid rgba(255,255,255,.06)}
.mnav.open{display:flex}
.mnav a{color:var(--hd-ink);padding:10px 6px;border-bottom:1px solid rgba(255,255,255,.05);font-size:14px}
.mnav .mode-row{display:flex;gap:10px;margin-top:12px}
/* ---- body ---- */
.wrap{max-width:1180px;margin:0 auto;width:100%;padding:22px 18px 30px;flex:1}
.card{background:var(--card);border-radius:var(--rad);box-shadow:0 2px 10px rgba(16,30,50,.05)}
.card-b{padding:18px 20px}
/* ---- 通用布局/标题/更多（首页、个人页复用） ---- */
.layout{display:grid;grid-template-columns:1fr 300px;gap:18px;align-items:start}
.tagbar{display:flex;gap:8px;align-items:center;background:#eef6ff;border:1px solid #cfe3f7;color:#2b5c94;border-radius:10px;padding:7px 12px;margin:0 0 12px;font-size:13px;flex-wrap:wrap}
.tagbar .btn{margin-left:auto}
.more-wrap{text-align:center;margin:6px 0 18px}
@media (max-width:900px){ .layout{grid-template-columns:1fr} }
/* ---- footer ---- */
.site-foot{margin-top:auto;background:linear-gradient(135deg,var(--hd2),var(--hd1));color:#93a2b8;font-size:12.5px}
.foot-in{max-width:1180px;margin:0 auto;padding:22px 18px;display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.foot-in a{color:#c3d2e6}
@media (max-width:860px){
  .head-nav,.user-chip{display:none}
  .burger{display:inline-block}
}
@media (max-width:600px){
  .lang-sw{display:none}
  .brand small{display:none}
  .wrap{padding:14px 10px 24px}
}
/* ---- 用户名片弹层（首页点留言人名字） ---- */
.who-name{cursor:pointer}
.who-name:hover{color:var(--brand);text-decoration:underline}
#ucard{position:fixed;left:0;top:0;right:0;bottom:0;z-index:900;display:none}
#ucard.on{display:block}
.uc-bg{position:absolute;left:0;top:0;right:0;bottom:0;background:rgba(16,24,34,.45)}
.uc-panel{position:relative;width:92%;max-width:440px;margin:7vh auto;background:var(--card);border-radius:var(--rad);box-shadow:0 14px 40px rgba(16,24,34,.28);overflow:hidden}
.uc-x{position:absolute;right:12px;top:6px;font-size:22px;line-height:1;color:var(--muted);cursor:pointer;z-index:3}
.uc-x:hover{color:var(--ink)}
.uc-body{max-height:78vh;overflow:auto;padding:18px 18px 20px}
.uc-load{padding:16px 0;text-align:center;color:var(--muted);font-size:13px}
.ucc-hd{display:flex;gap:12px;align-items:center;margin-bottom:14px}
.ucc-av{width:44px;height:44px;flex:none;border-radius:50%;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px}
.ucc-hd-t{min-width:0}
.ucc-nm{font-size:15px;font-weight:600;color:var(--ink);display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.ucc-sub{font-size:12px;color:var(--muted);margin-top:3px}
.ucc-sec{margin-bottom:12px}
.ucc-lb{font-size:12px;color:var(--muted);margin-bottom:5px}
.ucc-edu-i{font-size:13.5px;color:var(--ink);padding:2px 0}
.ucc-yr{color:var(--muted);font-size:12px}
.ucc-vl{font-size:13.5px;color:var(--ink);word-break:break-word}
.ucc-ct{display:flex;gap:10px;font-size:13.5px;padding:2px 0}
.ucc-ck{color:var(--muted);width:38px;flex:none}
.ucc-cv{color:var(--ink);word-break:break-all}
.ucc-none{font-size:12.5px;color:var(--muted)}
.ucc-tip{font-size:12px;color:var(--muted);margin-top:6px}
.ucc-acts{margin-top:14px;display:flex;gap:8px}
.uc-msgs{margin-top:16px;border-top:1px solid var(--line);padding-top:12px}
.uc-sec-t{font-size:12px;color:var(--muted);margin-bottom:8px}
/* ================= 留言卡片流（gb_render_card 单一出口：首页/个人页/异步加载共用） ================= */
.msg{border:1px solid var(--line);border-radius:var(--rad);padding:16px 18px;margin-bottom:14px;position:relative}
.msg.solved{opacity:.78;background:#fbfcfd}
.msg.dim{opacity:.6}
.pin-tag{position:absolute;top:-9px;left:16px;background:#0b8fe0;color:#fff;font-size:11px;padding:2px 10px;border-radius:999px;box-shadow:0 2px 6px rgba(11,143,224,.4)}
.msg-head{display:flex;gap:10px;align-items:flex-start}
.msg-head .who{flex:1}
.msg-head .who b{font-size:14.5px}
.msg-head .meta{text-align:right;font-size:12px;color:var(--muted);white-space:nowrap}
.msg-head .meta .geo{color:#5a6b7e}
.life{display:inline-block;background:#f0f4f9;color:#5a6b7e;border-radius:6px;padding:1px 7px;margin-top:2px}
.life.burn{background:var(--burnbg);color:var(--burn)}
.life.perm{background:#f0f4f9}
.life.exp{background:#e9edf3;color:#8a97a6}
.msg.expired{background:#fafbfd;border-color:#d7dfe9}
.t-chip{display:inline-block;font-size:11.5px;border-radius:6px;padding:1px 8px;margin-left:6px;vertical-align:1px}
.t-chip.ask{background:var(--askbg);color:var(--ask)}
.t-chip.give{background:var(--givebg);color:var(--give)}
.t-chip.done{background:#e8f6ef;color:#0b8a4c}
.stamp-chip{display:inline-block;font-size:11.5px;background:#fff4d6;color:#96730e;border-radius:6px;padding:1px 8px;margin-left:6px;vertical-align:1px}
/* 发布者标签（留言自带，点标签筛选同主题） */
.kw-row{margin:2px 0 0 40px;display:flex;gap:6px;flex-wrap:wrap}
.tags-inline{display:contents}   /* 标签 chips 直接参与 .msg-acts 的 flex 换行 */
.tags-inline .kw{margin-left:2px}
a.kw{display:inline-block;font-size:11.5px;background:#eef3fb;color:#3a6ea5;border:1px solid #d8e4f2;border-radius:999px;padding:1px 10px;text-decoration:none}
a.kw:hover{background:#dbe9f9;color:#1d4e8c}
.badge{display:inline-block;font-size:10.5px;border-radius:5px;padding:1px 6px;margin-left:4px;vertical-align:1px}
.b-ver{background:#e0f0fd;color:#0b6ab8}
.b-trust{background:#e8f0fe;color:#2f6fe0}
.b-admin{background:linear-gradient(135deg,#0b1e33,#0a7d93);color:#fff;font-weight:600}
.b-mod{background:linear-gradient(135deg,#5b3a9c,#8e5cd6);color:#fff;font-weight:600}
.b-vet{background:#fff4e0;color:#a86e10}
.b-master{background:linear-gradient(135deg,#b8860b,#f0c33c);color:#fff;font-weight:600}
.msg-body{padding:10px 0 4px 40px}
.msg-body p{word-break:break-word;white-space:pre-line}
.lock-row{margin:6px 0 4px 40px;background:#f7f9fc;border:1px dashed var(--line);border-radius:8px;padding:6px 10px;font-size:12.5px;color:var(--muted);display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.lock-row.open{border-style:solid;border-color:#b8e0cd;background:#f2fbf6;color:#0b7a4c}
.lock-row .ct{font-weight:600;color:#0b7a4c;font-size:13px}
.msg-acts{display:flex;gap:6px;flex-wrap:wrap;margin:8px 0 0 40px}
.btn.ok{border-color:#bfe8d2;color:#0b8a4c}
.btn.danger{color:#b3261e}
.solved-by{font-size:12px;color:#0b8a4c}
.replies{margin:10px 0 0 40px;border-top:1px dashed var(--line);padding-top:10px}
.rep{display:flex;gap:8px;margin-bottom:10px;font-size:13.5px}
.rep .rep-del{margin-left:auto;align-self:flex-start;opacity:.45;flex:none}
.rep .rep-del:hover{opacity:1}
.rep .nm{font-weight:600;font-size:12.5px}
.rep .nm .tm{color:var(--muted);font-weight:400;font-size:11px;margin-left:6px}
.rep .txt{color:#35404d}
.rep.thank{background:#fff8e6;border:1px dashed #e6c97a;border-radius:8px;padding:6px 10px;color:#8a6d1a}
.reply-box{display:flex;gap:8px;margin-top:6px}
.reply-box input{flex:1;padding:8px 12px;border:1px solid var(--line);border-radius:8px;font-size:13px}
.ghost-note{color:var(--muted);font-size:12.5px;padding:4px 0}
/* 附件 chips 与图片灯箱 */
.att-row{display:flex;gap:8px;flex-wrap:wrap;margin:8px 0 0 40px}
.att-chip{display:inline-flex;align-items:center;gap:5px;font-size:12.5px;color:var(--brand);background:#eef6fd;border:1px solid #d5e9f8;border-radius:8px;padding:6px 10px;text-decoration:none;max-width:280px}
.att-chip:hover{background:#e0f0fc}
.att-chip .att-ico{flex:none;font-size:18px;line-height:1}
.att-chip .att-meta{display:flex;flex-direction:column;gap:2px;min-width:0;font-size:12.5px;color:var(--ink);overflow:hidden}
.att-chip .att-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.att-chip .att-sz{color:var(--muted);font-size:11px;flex:none}
.att-chip.att-img{padding:6px;gap:8px;max-width:320px}
.att-chip.att-img img{width:128px;height:128px;object-fit:cover;border-radius:8px;flex:none;background:#dde8f2;display:block}
.att-chip.att-img:hover{background:#e0f0fc}
#lb{position:fixed;inset:0;background:rgba(10,18,28,.82);display:none;align-items:center;justify-content:center;z-index:999;cursor:zoom-out;flex-direction:column;gap:12px;padding:24px}
#lb.on{display:flex}
#lb img{max-width:min(92vw,960px);max-height:78vh;border-radius:10px;box-shadow:0 12px 48px rgba(0,0,0,.45)}
#lb .lb-name{color:#dfe9f3;font-size:13px;max-width:80vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
#lb .lb-x{position:absolute;top:14px;right:20px;color:#fff;font-size:26px;line-height:1;opacity:.8}
/* 密码锁留言（卡片正文区） */
.pass-lock{background:linear-gradient(135deg,#fff7ed,#fdf1e2);border:1px dashed #e0b98b;border-radius:var(--rad-s);padding:12px 14px;margin:2px 0 4px}
.pass-lock .pl-t{display:flex;gap:8px;align-items:center;font-size:14px;color:#8a5a21}
.pass-lock .pl-ic{font-size:16px}
.pass-lock .pl-hint{font-size:12.5px;color:#9a6a2f;margin:7px 0 9px;line-height:1.6}
.pl-row{display:flex;gap:8px}
.pass-in{flex:1;max-width:240px;padding:8px 12px;border:1px solid #e2b98a;border-radius:8px;font-size:13px;background:#fff;outline:0}
.pass-in:focus{border-color:var(--brand)}
.pl-on{font-size:11.5px;color:var(--muted);margin-top:4px}
.opt-hint{font-size:11.5px;color:var(--muted)}
/* ================= 右侧栏（side.php：首页 / 个人页共用） ================= */
.side{display:flex;flex-direction:column;gap:14px;position:sticky;top:76px}
.side .card h3{font-size:14px;margin-bottom:12px}
.search-box{display:flex;gap:8px;align-items:center;margin-bottom:6px}
.search-box input{flex:1;min-width:0;padding:8px 11px;border:1px solid var(--line);border-radius:8px;font-size:13px}
.search-box .btn{flex:none;padding:8px 14px}
.side .opt-hint{font-size:11.5px;color:var(--muted)}
.cloud{display:flex;flex-wrap:wrap;gap:7px 8px;align-items:baseline;line-height:1.5}
.cloud-tag{display:inline-flex;align-items:baseline;gap:3px;text-decoration:none;color:#2b5c94;background:#eef6ff;border:1px solid #cfe3f7;border-radius:999px;padding:2px 10px;transition:background .15s}
.cloud-tag:hover{background:#dbe9f9;color:#1d4e8c}
.cloud-tag .cc{font-size:10px;color:#7d97b5;font-weight:600}
.rule-item{display:flex;gap:8px;font-size:12.5px;color:#3a4756;margin-bottom:8px;align-items:flex-start}
.rule-item .no{background:var(--grad);color:#fff;border-radius:50%;width:18px;height:18px;font-size:10px;display:flex;align-items:center;justify-content:center;flex:none;margin-top:2px}
.toplist .item{display:flex;gap:8px;padding:7px 0;border-bottom:1px dashed #eef2f6;font-size:12.5px;align-items:flex-start}
.toplist .item:last-child{border:0}
.toplist b{color:#3a4756;font-weight:600}
@media (max-width:900px){ .side{position:static} }
@media (max-width:600px){
  .msg-body,.lock-row,.msg-acts,.replies,.kw-row{margin-left:0}
  .side{display:none}
}