:root{color-scheme:dark;--bg:#0c1519;--panel:#142126;--line:#2a393e;--text:#ecf2f0;--muted:#93a6aa;--orange:#f1b47d;--green:#70d7bd;--blue:#83c5e9}*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 90% 0, #1c3337 0,transparent 42%),var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC",sans-serif;font-size:14px}.shell{max-width:1320px;margin:auto;padding:0 48px}header{height:88px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}a{color:inherit;text-decoration:none}.brand{font-size:24px;color:var(--green);display:flex;gap:12px;align-items:center}.brand span{font-size:12px;letter-spacing:2px;color:var(--text);font-weight:700}.brand small{border-left:1px solid var(--line);padding-left:16px;font-size:11px;color:var(--muted)}.pill{padding:9px 14px;border:1px solid var(--line);border-radius:24px;color:var(--muted);font-size:12px}.pill.good{color:var(--green);background:#17352f;border-color:#2e5449}.intro{padding:44px 0 28px;display:flex;align-items:center;justify-content:space-between}.eyebrow{color:var(--green);font-size:12px;letter-spacing:2px}h1{font-size:38px;font-weight:550;margin:14px 0;letter-spacing:-1px}h1 span{font-size:15px;font-weight:400;color:var(--muted);margin-left:18px;letter-spacing:1px}.intro p{color:var(--muted);font-size:13px}.device{display:flex;flex-direction:column;gap:8px;text-align:right}.device span,.device small{color:var(--muted);font-size:11px}.device strong{font-size:16px;font-weight:500}.notice{background:#20302d;border-left:3px solid var(--green);padding:12px 16px;line-height:1.6;color:#bbd8d0;font-size:12px;margin-bottom:22px}.notice.warning{border-color:var(--orange);background:#322a22;color:#edcfb2}.metrics{display:grid;grid-template-columns:1fr 1fr 1.04fr;gap:16px}.metric{padding:25px 26px;background:linear-gradient(125deg,#1a292e,var(--panel));border:1px solid var(--line);border-radius:16px}.label{display:flex;justify-content:space-between;gap:10px;align-items:center;font-size:14px}.label small{font-size:9px;letter-spacing:1px;color:var(--muted)}.warm .label{color:var(--orange)}.cool .label{color:var(--blue)}.value{display:flex;align-items:baseline;gap:8px;margin:24px 0 22px}.value strong{font-size:65px;font-weight:450;letter-spacing:-3px;font-variant-numeric:tabular-nums}.value span{color:var(--muted);font-size:19px}.range{display:flex;justify-content:space-between;color:var(--muted);font-size:11px;border-top:1px solid var(--line);padding-top:16px}.range b{color:var(--text);font-weight:400;margin-left:6px}.flow{margin-top:28px;display:grid;gap:22px}.flow div{display:flex;align-items:center;gap:10px;font-size:12px}.flow b{margin-left:auto;color:var(--muted);font-size:11px;font-weight:400}i{display:inline-block;width:7px;height:7px;background:#5f6e72;border-radius:50%}i.on{background:var(--green);box-shadow:0 0 10px #70d7bd33}.charts{margin-top:25px;border:1px solid var(--line);border-radius:16px;padding:26px;background:#122026}.section-head{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:24px}h2{font-size:18px;font-weight:500;margin:0 0 8px}.section-head p{font-size:11px;color:var(--muted);margin:0}.controls{display:flex;gap:12px;align-items:center}.seg{background:#0d191e;display:flex;padding:3px;border-radius:8px}button{cursor:pointer;font:inherit;color:var(--muted);border:0;background:none;padding:8px 13px;font-size:11px;border-radius:6px}button.active{background:#294740;color:#c5f5e5}.export{border:1px solid var(--line);border-radius:8px;padding:10px 12px;font-size:11px}.plot-head{display:flex;justify-content:space-between;margin:18px 0 10px;font-size:12px}.plot-head b{font-size:10px;color:var(--muted);font-weight:400}.plot-head small{color:var(--muted);margin-left:6px}.legend{margin-right:9px}.temp{background:var(--orange)}.hum{background:var(--blue)}.plot{height:175px;position:relative}.plot svg{width:100%;height:100%;overflow:visible}.empty{height:100%;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:8px;border:1px dashed #2b4148;border-radius:8px;background:repeating-linear-gradient(0deg,transparent,transparent 42px,#1c2b30 43px);color:var(--muted);font-size:12px}.empty small{font-size:10px;color:#6f898f}footer{display:flex;justify-content:space-between;gap:18px;color:#7d969c;font-size:10px;padding:23px 0 35px;line-height:1.6}@media(max-width:900px){.shell{padding:0 22px}.metrics{grid-template-columns:1fr 1fr}.status{grid-column:1/-1}.flow{grid-template-columns:1fr 1fr 1fr;gap:18px}.flow div{flex-wrap:wrap}.section-head{align-items:flex-start;flex-direction:column}.device{display:none}h1{font-size:30px}h1 span{display:block;margin:10px 0 0;font-size:12px}.brand small{display:none}}@media(max-width:520px){.metrics{grid-template-columns:1fr}.status{grid-column:auto}.value strong{font-size:58px}.flow{grid-template-columns:1fr}.controls{flex-wrap:wrap}.charts{padding:18px}.pill{font-size:10px}.brand span{font-size:10px}footer{flex-direction:column}.intro{padding-top:30px}}

@media(max-width:600px){.metric .label small{display:none}.flow{grid-template-columns:1fr}.flow div{flex-wrap:nowrap}}

header{gap:14px}.brand{margin-right:auto}.sensor-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:16px}.sensor{padding:22px;background:var(--panel);border:1px solid var(--line);border-radius:16px}.sensor-title{display:flex;flex-direction:column;gap:8px;font-size:14px}.sensor-title small{font-size:10px;color:var(--muted)}.sensor>strong{font-size:35px;font-weight:450;display:block;margin:22px 0 14px}.sensor p{font-size:10px;line-height:1.7;color:var(--muted);margin:12px 0 0}.level{height:5px;background:#2b3c43;border-radius:5px}.level span{height:100%;background:#bcadf0;display:block;max-width:100%}.axes{display:flex;justify-content:space-between;gap:5px;margin-top:25px}.axes div{display:grid;gap:12px}.axes span{color:var(--muted);font-size:11px}.axes b{font-size:20px;font-weight:450}.buttons-state{display:flex;gap:10px;margin-top:28px}.buttons-state span{background:#23343b;padding:12px;border-radius:9px;font-size:12px}.buttons-state .pressed{color:var(--green);background:#25483d}.light{background:var(--green)}.sound{background:#bcadf0}.ai-panel{padding:26px;background:var(--panel);border:1px solid var(--line);border-radius:16px;margin-top:24px}textarea,input,select{font:inherit;color:var(--text);background:#0c1a20;border:1px solid var(--line);border-radius:7px;padding:10px;outline:none}textarea:focus,input:focus{border-color:var(--green)}textarea{width:100%;min-height:90px;resize:vertical}input[type=checkbox]{width:auto;margin-right:6px}.ai-actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin:14px 0}.ai-actions label{font-size:11px;color:var(--muted)}button.primary{background:#70d7bd;color:#0a251e;font-weight:600;padding:10px 16px}.ai-actions .primary{margin-left:auto}#aiReply{white-space:pre-wrap;line-height:1.8;font-size:13px;color:#bed1d5;border-top:1px solid var(--line);padding-top:18px}dialog{color:var(--text);background:#14242b;border:1px solid #3b545c;border-radius:16px;padding:24px;width:min(600px,94vw);max-height:90vh}dialog::backdrop{background:#0009}.modal-head{display:flex;align-items:center;justify-content:space-between}dialog form>label{display:flex;flex-direction:column;gap:8px;margin:16px 0;font-size:12px;color:#c5d7da}dialog form>label.check{flex-direction:row}#aiSettingsMessage,.subtle{font-size:11px;line-height:1.8;color:var(--muted)}dialog input,dialog select{width:100%}dialog label span{display:flex;gap:6px}dialog label span input{width:auto}button:disabled{opacity:.5;cursor:wait}[hidden]{display:none!important}@media(max-width:1000px){.sensor-grid{grid-template-columns:1fr 1fr}}@media(max-width:600px){.sensor-grid{grid-template-columns:1fr}.brand span{font-size:9px;letter-spacing:1px}header{gap:7px}.pill{padding:7px}.export{padding:8px}.axes{justify-content:space-around}}

[data-sensor][hidden]{display:none!important}fieldset{border:1px solid #30434a;border-radius:12px;padding:14px;margin:18px 0}legend{color:#70d7bd}fieldset .check{display:inline-flex;margin:8px 18px 8px 0}

.device-manager{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:24px}.device-manager select,.rule-grid select{background:#17282e;color:#ecf2f0;border:1px solid #30434a;border-radius:10px;padding:10px}.rule-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.rule-grid label{min-width:0}.device-admin-row{padding:14px 0;border-bottom:1px solid #30434a}.device-admin-row small{display:block;margin:6px 0}.device-admin-row button{margin-top:8px}#smartStatusPanel[hidden]{display:none!important}@media(max-width:550px){.rule-grid{grid-template-columns:1fr}}

#schoolLogo{width:42px;height:42px;object-fit:contain;flex-shrink:0}#schoolLogoPreview{max-width:120px;max-height:120px;object-fit:contain;background:#ecf2f0;border-radius:8px;padding:8px}.brand #schoolName{white-space:normal;line-height:1.4;letter-spacing:1px;max-width:420px}img[hidden]{display:none}

/* Campus observatory */
:root{color-scheme:dark}body{background:#0a1217;background-image:radial-gradient(ellipse at 85% 0%,#173b3e80,transparent 52%);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif}.shell{max-width:1520px;margin:auto;padding:0 48px}header{min-height:100px}.brand small{font-size:12px}.overview{display:flex;align-items:center;justify-content:space-between;gap:36px;padding:56px 0 46px;border-bottom:1px solid #253b42}.overview h1{font-size:clamp(28px,3.2vw,46px);letter-spacing:-1px;margin:16px 0}.overview p,.fleet-section p{color:#91a8ae;line-height:1.8}.overview-stats{display:flex;gap:40px}.overview-stats div{display:flex;flex-direction:column;gap:8px;min-width:70px}.overview-stats b{font-size:36px;color:#90e2ce;font-weight:500}.overview-stats span{font-size:12px;color:#91a8ae}.fleet-section{padding:30px 0}.fleet-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:16px}.fleet-card{text-align:left;background:linear-gradient(130deg,#192e34,#101e25);border:1px solid #2d444b;border-radius:16px;padding:22px;color:#edf5f4;cursor:pointer;transition:transform .2s,border-color .2s}.fleet-card:hover{transform:translateY(-3px);border-color:#76d7be}.fleet-card.selected{border-color:#76d7be;box-shadow:inset 3px 0 #76d7be}.fleet-top{display:flex;justify-content:space-between;gap:12px}.fleet-top strong{font-size:18px}.fleet-top span{font-size:12px}.fleet-online{color:#7ae3bb}.fleet-offline{color:#d3aa87}.fleet-values{display:flex;gap:30px;font-size:28px;margin:24px 0 16px;font-variant-numeric:tabular-nums}.fleet-values span+span{color:#91cae9}.fleet-card small{font-size:12px;color:#8fa8af}.device-manager{border-top:1px solid #263c43;border-bottom:1px solid #263c43;padding:16px 0;margin:0}.intro{padding:30px 0}.intro h1{font-size:30px}.intro h1 span{font-size:14px}.metric,.sensor,.charts,.ai-panel{border-radius:16px}.metric{background:linear-gradient(150deg,#192c32,#101d24)}.charts{background:#101d23}.notice{border-radius:8px}.section-head h2{font-size:20px}.sensor-grid{gap:16px}footer{padding:30px 0}
/* Dedicated administrator routes */
.admin-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:36px;padding-top:34px;min-height:calc(100vh - 100px)}.admin-sidebar{border-right:1px solid #283c44;padding-right:24px}.admin-sidebar nav{display:flex;flex-direction:column;gap:10px;margin-top:24px}.admin-sidebar nav a{display:flex;gap:15px;padding:15px 12px;text-decoration:none;color:#99b0b7;border-radius:10px}.admin-sidebar nav a span{opacity:.5;font-size:12px}.admin-sidebar nav a.active{background:#183e3c;color:#91e3cd}.back-dashboard{display:block;margin-top:40px;font-size:13px;color:#8ea9b1;text-decoration:none}.admin-content{min-width:0;padding-bottom:50px}.admin-content .device-manager{padding:16px 0;margin-bottom:28px}.admin-workspace{display:block;width:100%;max-width:100%;border:0;background:none;padding:0;color:#e1eeed}.admin-workspace .modal-head{padding:0 0 16px;border-bottom:1px solid #263c43}.admin-workspace h2{font-size:28px;margin:12px 0}.admin-view{max-width:880px}.admin-view fieldset{border:1px solid #2d444b;border-radius:16px;background:#112127;padding:28px;margin:22px 0}.admin-view legend{color:#8ee1c9;padding:0 10px;font-weight:600}.admin-view>label{background:#112127;padding:22px;border-radius:12px;margin:18px 0}.admin-view label{font-size:14px;line-height:1.8}.admin-view input,.admin-view select{margin-top:8px}.admin-workspace small{line-height:1.8;color:#8da8af}.admin-savebar{padding-top:24px;margin-top:20px;border-top:1px solid #2d444b}.admin-page .dashboard-hidden{display:none!important}.admin-workspace #loginForm{max-width:460px;margin:32px 0;padding:28px;background:#12262c;border-radius:16px}.admin-workspace #loginForm[hidden],.admin-workspace #settingsForm[hidden],.admin-view[hidden]{display:none!important}.admin-page .rule-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.device-admin-row{padding:18px 0;border-bottom:1px solid #294049}.device-admin-row:last-child{border:0}
@media(max-width:900px){.shell{padding:0 20px}.overview{flex-direction:column;align-items:flex-start;padding-top:32px}.overview-stats{gap:38px}.admin-layout{grid-template-columns:1fr;gap:20px}.admin-sidebar{border-right:0;border-bottom:1px solid #283c44;padding:0 0 16px}.admin-sidebar nav{flex-direction:row;overflow:auto;margin-top:12px;gap:4px}.admin-sidebar nav a{white-space:nowrap;padding:10px}.admin-sidebar nav a span,.back-dashboard{display:none}.brand small{display:none}.admin-view fieldset{padding:18px}.fleet-values{font-size:24px}}

/* Keep form labels and controls on separate rows at every width. */
.admin-workspace #loginForm{display:grid;grid-template-columns:minmax(0,1fr);gap:20px;box-sizing:border-box;width:min(100%,480px)}.admin-workspace #loginForm label,.admin-view label:not(.check){display:grid;grid-template-columns:minmax(0,1fr);gap:6px;margin:0 0 18px}.admin-workspace input:not([type=checkbox]),.admin-workspace select{box-sizing:border-box;display:block;width:100%;min-width:0}.admin-workspace #loginForm button{justify-self:start}.admin-workspace #loginForm[hidden]{display:none!important}.admin-workspace .check{display:flex;align-items:center;gap:8px}.admin-workspace input[type=checkbox]{width:auto;flex:0 0 auto}.admin-sidebar [data-nav]{text-decoration:none}.user-row{display:grid;grid-template-columns:1fr auto;gap:12px;padding:16px 0;border-bottom:1px solid #2b4148}.user-row strong,.user-row small{display:block;overflow-wrap:anywhere}.user-preview{width:100%;border-collapse:collapse;font-size:13px}.user-preview td,.user-preview th{text-align:left;border-bottom:1px solid #2b4148;padding:10px}.admin-view button{margin:8px 8px 8px 0}[hidden]{display:none!important}