/* ===== 三子页应用：顶部导航 / 分页 / 输入端 / 空状态 ===== */
.topbar{
  display:flex; align-items:center; gap:14px; flex-wrap:wrap;
  padding:9px 20px; background:#081120; border-bottom:1px solid var(--line);
  position:sticky; top:0; z-index:60;
}
.topbar .brand{ display:flex; align-items:center; gap:9px; font-size:13.5px; font-weight:700; letter-spacing:1px; }
.topbar .brand .mi{ width:22px;height:22px;border-radius:6px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#29b6f6,#1a6fb0); font-size:12px; }
.topbar .live{ display:flex; align-items:center; gap:6px; font-size:11.5px; color:var(--green); }
.topbar .live .d{ width:7px;height:7px;border-radius:50%;background:var(--green); box-shadow:0 0 7px var(--green); animation:blink 1.6s infinite; }
.tabs{ display:flex; gap:6px; margin-left:auto; }
.tabs button{
  background:var(--panel2); border:1px solid var(--line); color:var(--dim);
  font-size:12.5px; padding:7px 16px; border-radius:8px; cursor:pointer; font-family:inherit;
  display:flex; align-items:center; gap:7px; transition:.18s;
}
.tabs button:hover{ color:var(--txt); border-color:#2f5c92; }
.tabs button.on{ color:#04121f; background:linear-gradient(135deg,#29b6f6,#1e8fd0); border-color:#29b6f6; font-weight:700; }
.tabs button .idx{ font-size:10px; opacity:.75; }

.page{ display:none; }
.page.on{ display:flex; flex-direction:column; flex:1; min-height:0; }

/* 空状态 / 模板占位 */
.empty-block{
  border:1px dashed #27446b; border-radius:10px; padding:22px 16px; text-align:center;
  color:var(--dim); font-size:12px; line-height:1.9; background:rgba(255,255,255,.012);
}
.empty-block .em{ font-size:22px; display:block; margin-bottom:6px; opacity:.6; }
.kv b.ph-value{ color:#3f5876; font-weight:400; }

/* ===== 输入端 ===== */
.input-wrap{ display:grid; grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr); gap:16px; padding:16px; align-items:start; }
.panel{
  background:var(--panel); border:1px solid var(--line); border-radius:12px; padding:16px 18px;
}
.panel .pt{ font-size:13.5px; font-weight:700; letter-spacing:1px; margin-bottom:4px; display:flex; align-items:center; gap:8px; }
.panel .pt .bar{ width:3px; height:14px; border-radius:2px; background:linear-gradient(180deg,var(--accent),#1a6fb0); }
.panel .pd{ font-size:11.5px; color:var(--dim); line-height:1.7; margin:6px 0 14px; }
.grp-t{ font-size:12px; font-weight:700; color:var(--accent); margin:14px 0 8px; letter-spacing:1.5px; }
.grp-t:first-of-type{ margin-top:2px; }
.panel.wide{ grid-column: 1 / -1; }
.dyn-head{ display:flex; align-items:center; gap:10px; margin-bottom:10px; }

/* 按日期导出 */
.export-bar{ display:flex; align-items:center; gap:10px; flex-wrap:wrap; background:var(--panel2);
  border:1px solid var(--line); border-radius:9px; padding:10px 12px; margin-bottom:6px; }
.export-bar input[type="date"]{ background:#0a1526; color:var(--txt); border:1px solid var(--line);
  border-radius:7px; padding:7px 10px; font-size:12.5px; font-family:inherit; color-scheme:dark; }
.export-bar input[type="date"]:focus{ outline:none; border-color:var(--accent); }
.export-bar .tb-btn{ background:linear-gradient(135deg,#29b6f6,#1e8fd0); border:none; color:#04121f;
  font-weight:700; font-size:12.5px; padding:8px 14px; border-radius:7px; cursor:pointer; }
.export-bar .tb-btn:hover{ filter:brightness(1.1); }
.exp-tip{ font-size:11.5px; color:var(--dim); }
.exp-tip.ok{ color:var(--green); }
.exp-tip.err{ color:var(--red); }
.frow{ display:grid; grid-template-columns:1fr 1fr; gap:10px; margin-bottom:10px; }
.frow.one{ grid-template-columns:1fr; }
.fld{ display:flex; flex-direction:column; gap:5px; }
.fld > span{ font-size:11px; color:var(--dim); }
.fld select,.fld input,.fld textarea{
  width:100%; background:#0a1526; color:var(--txt); border:1px solid var(--line);
  border-radius:8px; padding:9px 11px; font-size:12.5px; font-family:inherit;
}
.fld select:focus,.fld input:focus,.fld textarea:focus{ outline:none; border-color:var(--accent); }
.fld textarea{ min-height:96px; resize:vertical; line-height:1.7; }
.drop{
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:6px;
  border:1px dashed #2b5588; border-radius:10px; padding:18px 12px; cursor:pointer;
  color:var(--dim); font-size:12px; text-align:center; transition:.18s; background:rgba(41,182,246,.03);
}
.drop:hover,.drop.hot{ border-color:var(--accent); color:var(--accent); background:rgba(41,182,246,.08); }
.drop .em{ font-size:22px; }
.drop small{ font-size:10.5px; opacity:.8; }
.thumbs{ display:flex; gap:8px; flex-wrap:wrap; margin-top:10px; }
.thumb{ position:relative; width:104px; height:70px; border-radius:8px; overflow:hidden; border:1px solid var(--line); background:#071120; }
.thumb img,.thumb video{ width:100%; height:100%; object-fit:cover; display:block; }
.thumb .kind{ position:absolute; left:4px; top:4px; font-size:9px; padding:1px 5px; border-radius:4px; background:rgba(4,12,24,.78); color:var(--accent); }
.thumb .rm{ position:absolute; right:3px; top:3px; width:17px;height:17px;border-radius:50%; border:none;
  background:rgba(4,12,24,.8); color:#ff8f9a; font-size:11px; line-height:1; cursor:pointer; }
.thumb .nm{ position:absolute; left:0; right:0; bottom:0; font-size:8.5px; color:#cfe0f3; background:rgba(4,12,24,.82);
  padding:2px 4px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.submit{
  width:100%; margin-top:14px; border:none; border-radius:9px; padding:12px 0; font-size:13.5px; font-weight:700;
  cursor:pointer; font-family:inherit; background:linear-gradient(135deg,#29b6f6,#1e8fd0); color:#04121f;
}
.submit:hover{ filter:brightness(1.1); }
.submit:disabled{ opacity:.55; cursor:not-allowed; filter:none; }
.form-tip{ font-size:11px; color:var(--dim); margin-top:9px; line-height:1.8; }
.form-tip.ok{ color:var(--green); }
.form-tip.err{ color:var(--red); }
.recent{ display:flex; flex-direction:column; gap:9px; max-height:520px; overflow-y:auto; padding-right:2px; }
.rc{ background:var(--panel2); border:1px solid var(--line); border-radius:9px; padding:9px 11px; }
.rc .h{ display:flex; align-items:center; gap:7px; font-size:11.5px; color:var(--dim); }
.rc .h b{ color:var(--txt); font-size:12px; }
.rc .t{ font-size:12px; line-height:1.65; margin-top:5px; color:#c8d8ea; word-break:break-word; }
.rc .m{ font-size:10.5px; color:var(--accent); margin-top:5px; }

/* 时间轴节点内的真实媒体 */
.node .imgs .ph img{ position:absolute; inset:0; }
.node .imgs video{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; }
.node .imgs .ph{ cursor:pointer; }
.badge-new{ font-size:9.5px; padding:1px 6px; border-radius:8px; background:rgba(255,77,94,.18); color:var(--red); margin-left:6px; }

/* 放大查看 */
.lightbox{ position:fixed; inset:0; background:rgba(2,7,15,.92); display:none; align-items:center; justify-content:center; z-index:999; padding:24px; }
.lightbox.on{ display:flex; }
.lightbox img,.lightbox video{ max-width:94vw; max-height:88vh; border-radius:10px; border:1px solid var(--line); }
.lightbox .x{ position:absolute; top:16px; right:22px; background:none; border:none; color:#dbe7f5; font-size:26px; cursor:pointer; }

/* ===== 线路实时监控（内嵌监控平台） ===== */
#p4{ min-height:0; }
.mon-bar{
  display:flex; align-items:center; gap:14px; flex-wrap:wrap; flex:none;
  padding:11px 20px; background:var(--panel); border-bottom:1px solid var(--line);
}
.mon-bar .mb-l{ display:flex; align-items:baseline; gap:12px; flex-wrap:wrap; }
.mon-bar .mb-t{ font-size:15px; font-weight:700; letter-spacing:1.5px; color:var(--txt); }
.mon-bar .mb-t::before{ content:""; display:inline-block; width:3px; height:14px; margin-right:9px;
  background:linear-gradient(180deg,#2ee6a8,#1a9e74); border-radius:2px; transform:translateY(1px); }
.mon-bar .mb-sub{ font-size:11.5px; color:var(--dim); }
.mb-chip{ margin-left:auto; display:flex; align-items:center; gap:7px; font-size:11.5px; color:var(--dim);
  background:#0a1526; border:1px solid var(--line); border-radius:20px; padding:4px 12px; }
.mb-chip .d{ width:7px; height:7px; border-radius:50%; background:#7d93b0; }
.mb-chip.ok{ color:var(--green); border-color:rgba(46,230,168,.4); }
.mb-chip.ok .d{ background:var(--green); box-shadow:0 0 7px var(--green); animation:blink 1.6s infinite; }
.mb-act{ display:flex; gap:8px; }
.mb-act button{
  background:var(--panel2); border:1px solid var(--line); color:var(--dim); font-family:inherit;
  font-size:12px; padding:7px 14px; border-radius:8px; cursor:pointer; transition:.18s;
}
.mb-act button:hover{ color:var(--txt); border-color:#2f5c92; }
.mb-act button.pri{ background:linear-gradient(135deg,#29b6f6,#1e8fd0); border-color:#29b6f6; color:#04121f; font-weight:700; }
.mb-act button.pri:hover{ filter:brightness(1.08); }

.mon-frame{ flex:1; min-height:0; position:relative; background:#0e1116; }
.mon-frame iframe{ position:absolute; inset:0; width:100%; height:100%; border:0; display:block; }
.mon-mask{
  position:absolute; inset:0; display:none; align-items:center; justify-content:center; padding:24px;
  background:radial-gradient(circle at 50% 40%,#0d1a2c,#060d1a 70%); z-index:2; text-align:center;
}
.mon-mask.on{ display:flex; }
.mm-box{ max-width:460px; display:flex; flex-direction:column; align-items:center; gap:10px; }
.mm-em{ font-size:30px; color:var(--accent); text-shadow:0 0 18px rgba(41,182,246,.7); animation:blink 2s infinite; }
.mm-t{ font-size:15px; font-weight:700; letter-spacing:1px; }
.mm-d{ font-size:12px; color:var(--dim); line-height:1.9; }
.mm-act{ display:flex; gap:10px; margin-top:6px; flex-wrap:wrap; justify-content:center; }
.mm-act button{
  background:linear-gradient(135deg,#29b6f6,#1e8fd0); border:none; color:#04121f; font-family:inherit;
  font-size:12.5px; font-weight:700; padding:9px 16px; border-radius:8px; cursor:pointer;
}
.mm-act button + button{ background:var(--panel2); color:var(--dim); border:1px solid var(--line); font-weight:400; }
.mm-url{ font-size:10.5px; color:#3f5876; word-break:break-all; margin-top:4px; }

@media (max-width: 1100px){
  .input-wrap{ grid-template-columns:1fr; }
}
@media (max-width: 860px){
  main{ flex-direction:column; }
  .col.left{ width:100%; border-right:none; border-bottom:1px solid var(--line); }
  .steps{ overflow-x:auto; }
  .step{ min-width:96px; }
  .tabs{ width:100%; margin-left:0; }
  .tabs button{ flex:1; justify-content:center; padding:8px 6px; }
}