:root {
  --bg: #0a101c;
  --bg2: #0f1828;
  --panel: #131d30;
  --panel2: #17233a;
  --line: #24324a;
  --text: #e9effc;
  --muted: #8fa2c2;
  --accent: #4f8cff;
  --accent2: #2fd1a0;
  --danger: #ff5d6c;
  --warn: #ffb020;
  --radius: 14px;
  --sidebar: 218px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: radial-gradient(1000px 500px at 15% -10%, #17294a 0%, var(--bg) 55%);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14.5px;
  line-height: 1.5;
  min-height: 100vh;
}
.hidden { display: none !important; }
.muted { color: var(--muted); }
.link { color: var(--accent); text-decoration: none; font-size: 13px; }
.hint { color: var(--muted); font-size: 12.5px; margin: 8px 0 0; }
.error { color: var(--danger); font-size: 13px; min-height: 18px; margin-top: 8px; }
code {
  background: #0a1322; border: 1px solid var(--line); border-radius: 6px;
  padding: 1px 5px; font-size: 12px; word-break: break-all;
}
a { color: var(--accent); }
h1, h2, h3, p { margin-top: 0; }
button, input, select, textarea { font-family: inherit; font-size: 14px; }
button { cursor: pointer; }
button:active { transform: translateY(1px); }

/* login */
.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login-card {
  width: min(420px, 100%); padding: 30px 26px; text-align: center;
  background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.015));
  border: 1px solid var(--line); border-radius: 20px;
  box-shadow: 0 24px 70px rgba(0,0,0,.5);
}
.login-card .logo { font-size: 36px; color: var(--accent); }
.login-card h1 { font-size: 22px; margin: 10px 0 4px; }
.login-card p { margin-bottom: 18px; }
.login-card input {
  width: 100%; padding: 12px 14px; margin: 8px 0; border-radius: 10px;
  border: 1px solid var(--line); background: #081120; color: var(--text);
}
.login-card button { width: 100%; margin-top: 10px; }

/* shell */
#app { min-height: 100vh; }
.sidebar {
  position: fixed; inset: 0 auto 0 0; width: var(--sidebar); z-index: 30;
  background: #0b1322; border-right: 1px solid var(--line);
  padding: 18px 14px; display: flex; flex-direction: column; gap: 16px;
}
.brand { display: flex; gap: 10px; align-items: center; }
.brand .logo { color: var(--accent); font-size: 24px; }
.brand b { display: block; font-size: 14px; }
.brand small { display: block; color: var(--muted); font-size: 11px; }
.nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.nav a {
  color: var(--muted); text-decoration: none; padding: 10px 12px; border-radius: 10px;
  display: flex; gap: 8px; align-items: center; font-size: 14px;
}
.nav a:hover { background: rgba(255,255,255,.04); color: var(--text); }
.nav a.active { background: rgba(79,140,255,.16); color: #cfe0ff; box-shadow: inset 0 0 0 1px rgba(79,140,255,.3); }
.side-foot { border-top: 1px solid var(--line); padding-top: 10px; }
.side-device { display: flex; align-items: center; gap: 8px; padding: 7px 6px; border-radius: 8px; font-size: 12px; color: var(--muted); }
.side-device b { color: var(--text); font-weight: 600; }
.side-device .dot { width: 7px; height: 7px; border-radius: 50%; background: #64748b; flex: 0 0 auto; }
.side-device .dot.on { background: var(--accent2); box-shadow: 0 0 0 3px rgba(47,209,160,.16); }
.shell { margin-left: var(--sidebar); min-height: 100vh; }
.topbar {
  position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: 12px;
  padding: 12px 18px; background: #0b1322; border-bottom: 1px solid var(--line);
}
.title-wrap { flex: 1; min-width: 0; }
.title-wrap h1 { font-size: 17px; margin: 0; }
.title-wrap p { margin: 1px 0 0; font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.top-actions { display: flex; align-items: center; gap: 8px; }
.pill { font-size: 11px; color: var(--muted); border: 1px solid var(--line); padding: 4px 8px; border-radius: 999px; white-space: nowrap; }
.pill.on { color: var(--accent2); border-color: rgba(47,209,160,.4); }
.icon-btn { background: transparent; border: 0; color: var(--text); font-size: 20px; padding: 4px 8px; line-height: 1; }
#menuBtn { display: none; }
main { padding: 16px 18px 90px; max-width: 1280px; margin: 0 auto; }
.page { display: none; }
.page.active { display: block; }

/* panels */
.panel {
  background: linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.012));
  border: 1px solid var(--line); border-radius: var(--radius); padding: 14px;
  margin-bottom: 14px;
}
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 10px; flex-wrap: wrap; }
.panel-head h3 { font-size: 15px; margin: 0; }
.tools { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.hero { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.hero h2 { font-size: 20px; margin: 0 0 2px; }
.hero p { margin: 0; }
.grid.two { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 14px; }
.stat {
  background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.015));
  border: 1px solid var(--line); border-radius: var(--radius); padding: 13px;
}
.stat b { display: block; font-size: 22px; line-height: 1.2; }
.stat span { color: var(--muted); font-size: 12px; }

/* buttons and forms */
button {
  border: 1px solid var(--line); background: var(--panel2); color: var(--text);
  border-radius: 10px; padding: 9px 13px;
}
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.danger { background: rgba(255,93,108,.14); border-color: rgba(255,93,108,.45); color: #ffc0c6; }
button.ghost { background: transparent; }
button.mini { padding: 4px 8px; font-size: 12px; }
button.block { width: 100%; }
input, select, textarea {
  background: #081120; color: var(--text); border: 1px solid var(--line);
  border-radius: 10px; padding: 9px 11px; outline: none;
}
input:focus, select:focus, textarea:focus { border-color: rgba(79,140,255,.65); }
textarea { width: 100%; resize: vertical; }
.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 10px; }
.filters input { flex: 1; min-width: 150px; }
.form { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.form label { display: flex; flex-direction: column; gap: 5px; font-size: 12px; color: var(--muted); }
.form label.check { flex-direction: row; align-items: center; gap: 8px; color: var(--text); font-size: 13px; }
.form input[type=checkbox] { width: 17px; height: 17px; accent-color: var(--accent); }
.button-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0; }
.kv { display: grid; gap: 8px; }
.kv > div { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.kv > div > span { min-width: 74px; color: var(--muted); font-size: 12px; }
.kv code { flex: 1; }

/* device cards */
.device-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 10px; }
.device-card {
  border: 1px solid var(--line); border-radius: 12px; padding: 12px;
  background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.01));
}
.device-card .dc-head { display: flex; align-items: center; gap: 8px; }
.device-card .dc-head b { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: #64748b; }
.dot.on { background: var(--accent2); box-shadow: 0 0 0 3px rgba(47,209,160,.15); }
.dc-meta { color: var(--muted); font-size: 12px; margin: 7px 0; line-height: 1.7; }
.dc-actions { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
.dc-actions button { padding: 6px 9px; font-size: 12px; }
.badge { display: inline-block; font-size: 11px; border: 1px solid var(--line); border-radius: 999px; padding: 2px 7px; color: var(--muted); }
.badge.green { color: var(--accent2); border-color: rgba(47,209,160,.35); }
.badge.red { color: #ffb3ba; border-color: rgba(255,93,108,.35); }
.badge.blue { color: #cfe0ff; border-color: rgba(79,140,255,.4); }

/* lists */
.device-list, .list, .mini-list { display: flex; flex-direction: column; gap: 8px; }
.list-item {
  border: 1px solid var(--line); border-radius: 11px; padding: 10px 12px;
  background: rgba(255,255,255,.02);
}
.list-item.unread { border-left: 3px solid var(--accent); background: rgba(79,140,255,.06); }
.li-top { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 12.5px; }
.li-top b { font-size: 13.5px; }
.li-top .time { margin-left: auto; color: var(--muted); font-size: 11.5px; }
.li-content { margin-top: 5px; white-space: pre-wrap; word-break: break-word; color: #d9e4f8; }
.li-actions { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 7px; }
.li-actions button { padding: 4px 8px; font-size: 11.5px; }
.mini-item { display: flex; gap: 8px; padding: 8px 2px; border-bottom: 1px solid rgba(36,50,74,.55); font-size: 12.5px; }
.mini-item:last-child { border-bottom: 0; }
.mini-item .grow { flex: 1; min-width: 0; }
.mini-item .txt { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: #d9e4f8; }
.mini-item .tm { color: var(--muted); font-size: 11px; white-space: nowrap; }
.empty { text-align: center; color: var(--muted); padding: 24px 10px; border: 1px dashed var(--line); border-radius: 10px; }

/* control */
.control-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px; }
.control-grid button { padding: 14px 10px; font-size: 13.5px; }
.control-grid button:hover { border-color: rgba(79,140,255,.6); }

/* map */
.map { width: 100%; height: 400px; background: #0b1424; border: 1px solid var(--line); }
.map-fallback { color: var(--muted); font-size: 12px; margin-top: 8px; }
.leaflet-container { background: #0b1424; font-family: inherit; }
.leaflet-popup-content-wrapper, .leaflet-popup-tip { background: #16233a; color: var(--text); }

/* modal */
.modal { position: fixed; inset: 0; z-index: 100; background: rgba(0,0,0,.6); display: grid; place-items: center; padding: 16px; }
.modal-card {
  width: min(720px, 100%); max-height: 88vh; overflow: auto;
  background: #101a2b; border: 1px solid var(--line); border-radius: 16px;
  box-shadow: 0 30px 90px rgba(0,0,0,.6);
}
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 13px 16px; border-bottom: 1px solid var(--line); position: sticky; top: 0; background: #101a2b; }
.modal-head h3 { margin: 0; font-size: 16px; }
.modal-body { padding: 16px; }
.modal-foot { padding: 12px 16px; border-top: 1px solid var(--line); display: flex; gap: 8px; justify-content: flex-end; flex-wrap: wrap; position: sticky; bottom: 0; background: #101a2b; }
.modal-body .form { grid-template-columns: 1fr; }
.modal-body audio { width: 100%; margin: 6px 0; }

/* toast / bottom nav */
.toast {
  position: fixed; left: 50%; bottom: calc(20px + env(safe-area-inset-bottom)); transform: translateX(-50%);
  z-index: 200; background: #1b2942; border: 1px solid var(--line); color: var(--text);
  padding: 10px 16px; border-radius: 999px; font-size: 13px; max-width: 92vw;
  box-shadow: 0 12px 40px rgba(0,0,0,.5);
}
.toast.err { border-color: rgba(255,93,108,.55); color: #ffc4ca; }
.bottom-nav { display: none; }

@media (max-width: 900px) {
  .sidebar { transform: translateX(-100%); transition: transform .2s ease; width: 250px; }
  .sidebar.open { transform: translateX(0); }
  .shell { margin-left: 0; }
  #menuBtn { display: block; }
  .grid.two { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  main { padding: 12px 12px 92px; }
  .topbar { padding: 10px 12px; }
  .bottom-nav {
    display: flex; position: fixed; left: 0; right: 0; bottom: 0; z-index: 40;
    background: #0b1322; border-top: 1px solid var(--line);
    padding: 6px 4px calc(6px + env(safe-area-inset-bottom));
  }
  .bottom-nav a {
    flex: 1; text-align: center; text-decoration: none; color: var(--muted);
    font-size: 11px; padding: 5px 2px; border-radius: 8px;
  }
  .bottom-nav a.active { color: #cfe0ff; background: rgba(79,140,255,.14); }
  .form { grid-template-columns: 1fr; }
  .map { height: 320px; }
  .hero { align-items: flex-start; flex-direction: column; }
  .title-wrap p { display: none; }
}
@media (max-width: 420px) {
  .stats { grid-template-columns: 1fr 1fr; }
  .device-grid { grid-template-columns: 1fr; }
  .top-actions .ghost { padding: 7px 8px; }
}