:root{
  --navy:#0F2A43; --navy-alt:#0C2036; --ink:#0B2239; --ink-2:#33475B; --ink-3:#6B7C8F; --ink-4:#9AA9B7;
  --page:#F5F8FA; --card:#FFFFFF; --stroke:#E6ECF1; --stroke-2:#EEF3F7;
  --teal:#0E92B8; --teal-vivid:#14A0C4; --teal-text:#0E7C9B; --teal-soft:#E4F3F8;
  --ok:#1F9D6B; --ok-soft:#E5F5EE; --warn:#C98A00; --warn-soft:#FBF2DC; --danger:#E5484D; --danger-soft:#FCE9E9;
  --r:14px; --sh:0 1px 2px rgba(11,34,57,.05),0 8px 24px rgba(11,34,57,.05);
  --sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --mono:ui-monospace,Menlo,Consolas,monospace;
  --appbar-h:58px; --drawer-w:220px;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{font-family:var(--sans);background:var(--page);color:var(--ink);font-size:14px;-webkit-font-smoothing:antialiased}
a{color:var(--teal-text)}

/* App bar */
.appbar{height:var(--appbar-h);background:linear-gradient(90deg,var(--navy),var(--navy-alt));color:#fff;display:flex;align-items:center;gap:12px;padding:0 16px;position:sticky;top:0;z-index:30}
.appbar .burger{background:none;border:none;color:#fff;font-size:22px;cursor:pointer;padding:4px 8px;display:none;line-height:1}
.appbar .logo{width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,var(--teal-vivid),#0b6d88);display:grid;place-items:center;font-size:16px;flex-shrink:0}
.appbar h1{font-size:16px;font-weight:600;white-space:nowrap}
.appbar h1 small{color:#9fb6c8;font-weight:500;font-size:12px;margin-left:6px}
.appbar .spacer{flex:1}
.clock{font-family:var(--mono);font-size:12px;color:#9fb6c8;white-space:nowrap}
.pill{display:inline-flex;align-items:center;gap:7px;padding:5px 11px;border-radius:999px;font-size:12px;font-weight:600;background:rgba(255,255,255,.12)}
.pill .blip{width:8px;height:8px;border-radius:50%;background:var(--teal-vivid);animation:pulse 1.6s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(20,160,196,.5)}70%{box-shadow:0 0 0 7px rgba(20,160,196,0)}100%{box-shadow:0 0 0 0 rgba(20,160,196,0)}}

.body{display:flex;min-height:calc(100vh - var(--appbar-h))}
.backdrop{display:none;position:fixed;inset:var(--appbar-h) 0 0 0;background:rgba(11,34,57,.4);z-index:25}
.backdrop.show{display:block}

/* Drawer */
.drawer{width:var(--drawer-w);background:var(--card);border-right:1px solid var(--stroke);padding:14px 10px;flex-shrink:0}
.drawer .grp{font-size:10.5px;text-transform:uppercase;letter-spacing:.08em;color:var(--ink-4);padding:12px 12px 6px;font-weight:700}
.drawer a.menu{display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:9px;color:var(--ink-2);text-decoration:none;font-weight:500;font-size:13.5px}
.drawer a.menu .ic{width:18px;text-align:center}
.drawer a.menu:hover{background:var(--page)}
.drawer a.menu.active{background:var(--teal-soft);color:var(--teal-text)}

.content{flex:1;min-width:0;padding:20px}
.view{display:none;flex-direction:column;gap:16px}
.view.active{display:flex}
.view .title{font-size:18px;font-weight:700}

/* KPI cards */
.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.kpi{background:var(--card);border:1px solid var(--stroke);border-radius:var(--r);padding:15px 17px;box-shadow:var(--sh)}
.kpi .lbl{color:var(--ink-3);font-size:12px;font-weight:500}
.kpi .val{font-size:30px;font-weight:700;margin-top:6px;font-variant-numeric:tabular-nums;letter-spacing:.5px}
.kpi .val small{font-size:15px;color:var(--ink-4);font-weight:500}

/* Cards */
.card{background:var(--card);border:1px solid var(--stroke);border-radius:var(--r);box-shadow:var(--sh);overflow:hidden}
.card>h3{font-size:13px;font-weight:600;padding:13px 16px;border-bottom:1px solid var(--stroke-2);display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.card>h3 .muted{color:var(--ink-3);font-weight:500;font-size:12px}
.card>h3 select{margin-left:auto}
select{font-family:var(--sans);font-size:12.5px;border:1px solid var(--stroke);border-radius:7px;padding:5px 9px;color:var(--ink);background:var(--card)}

/* Gauges */
.gauges{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:6px;padding:10px}
.gaugebox{text-align:center}
.glabel{font-size:11.5px;color:var(--ink-3);font-weight:600;margin-top:6px}
.gcanvas{height:150px;width:100%}

.chart{height:260px;width:100%;padding:4px}
/* isolate keeps Leaflet's internal high z-indexes from covering the drawer/appbar */
.map{height:calc(100vh - 240px);min-height:360px;width:100%;position:relative;z-index:0;isolation:isolate}
.map-lbl{background:rgba(15,42,67,.85);color:#fff;border:none;font-size:11px;font-weight:600;padding:1px 6px;box-shadow:none}
.map-lbl::before{display:none}

/* Table */
.tablewrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:13px;min-width:720px}
thead th{text-align:left;color:var(--ink-3);font-weight:600;font-size:11px;text-transform:uppercase;letter-spacing:.04em;padding:9px 14px}
tbody td{padding:10px 14px;border-top:1px solid var(--stroke-2);vertical-align:middle}
tbody tr:hover{background:#FAFCFD}
.vname{font-weight:600;display:flex;align-items:center;gap:9px}
.sdot{width:9px;height:9px;border-radius:50%;flex-shrink:0}
.s-nav{background:var(--teal-vivid)} .s-anc{background:var(--ink-4)} .s-off{background:#C3CFD9} .s-crit{background:var(--danger)}
.mono{font-family:var(--mono);font-size:12px;font-variant-numeric:tabular-nums;color:var(--ink-2)}
.chip{display:inline-block;padding:2px 8px;border-radius:999px;font-size:11px;font-weight:600}
.c-crit{background:var(--danger-soft);color:#B4292E} .c-warn{background:var(--warn-soft);color:#8A5F00} .c-ok{background:var(--ok-soft);color:#14724D}
.acts{display:flex;gap:5px;flex-wrap:wrap}
.acts.wrap{margin-top:12px;padding-top:12px;border-top:1px solid var(--stroke-2)}
.acts button{border:1px solid var(--stroke);background:var(--card);border-radius:7px;padding:5px 9px;font-family:var(--sans);font-size:11.5px;font-weight:600;color:var(--ink-2);cursor:pointer}
.acts button:hover{border-color:var(--teal);color:var(--teal-text);background:var(--teal-soft)}
.acts button.danger:hover{border-color:var(--danger);color:#B4292E;background:var(--danger-soft)}
.acts button.active{background:var(--navy);border-color:var(--navy);color:#fff}
.acts button.active-fault{background:var(--danger);border-color:var(--danger);color:#fff}
.acts button.busy{opacity:.55}

/* Dashboard vessel cards with mini gauges + throttle lever */
.vgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(330px,1fr));gap:14px;padding:12px}
.vsub{font-size:11px;color:var(--ink-3);margin:2px 0 8px}
.cgauges{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;margin-bottom:6px}
.cg{text-align:center;min-width:0}
.cgc{height:62px;width:100%}
.cgl{font-size:8px;color:var(--ink-3);text-transform:uppercase;letter-spacing:.02em;margin-top:-8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cstate{display:flex;gap:6px;flex-wrap:wrap;margin:8px 0 10px}

/* Throttle lever */
.throttle-row{display:flex;align-items:center;gap:10px;background:var(--page);border-radius:10px;padding:8px 12px;margin:4px 0 6px}
.throttle-row .thl{font-size:11px;font-weight:600;color:var(--ink-2);white-space:nowrap}
.throttle-row .thv{margin-left:auto;font-weight:700;color:var(--teal-text);min-width:38px;text-align:right}
input.throttle{flex:1;-webkit-appearance:none;appearance:none;height:8px;border-radius:6px;background:var(--stroke);outline:none;cursor:pointer}
input.throttle::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:22px;height:22px;border-radius:50%;background:var(--navy);border:3px solid #fff;box-shadow:0 1px 4px rgba(11,34,57,.3);cursor:grab}
input.throttle::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:var(--navy);border:3px solid #fff;cursor:grab}

/* Alarms + info */
#alarms,#alarms-active{padding:6px 0;max-height:220px;overflow:auto}
.alarm{display:flex;align-items:center;gap:10px;padding:9px 16px;border-bottom:1px solid var(--stroke-2);font-size:13px}
.alarm .code{font-weight:600} .alarm .muted{color:var(--ink-3)}
.alarm.empty{color:var(--ink-3);justify-content:center;padding:20px}
.log{max-height:calc(100vh - 360px);overflow:auto}
.log .row{display:flex;align-items:center;gap:10px;padding:8px 14px;border-bottom:1px solid var(--stroke-2);font-size:12.5px}
.log .row .ts{font-family:var(--mono);color:var(--ink-4);font-size:11px;min-width:64px}
.log .row.raised{background:#FEF6F6}
.info-list .kv{display:flex;justify-content:space-between;gap:16px;padding:11px 16px;border-bottom:1px solid var(--stroke-2);font-size:13px}
.info-list .kv span:first-child{color:var(--ink-3)}

/* Vessel cards */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px}
.vcard{background:var(--card);border:1px solid var(--stroke);border-radius:var(--r);box-shadow:var(--sh);padding:16px}
.vcard h4{font-size:15px;font-weight:700;display:flex;align-items:center;gap:9px;margin-bottom:10px}
.vcard .kv{display:flex;justify-content:space-between;gap:12px;padding:5px 0;font-size:13px;border-top:1px solid var(--stroke-2)}
.vcard .kv span:first-child{color:var(--ink-3)}

/* MQTT inspector */
.note{margin:12px 16px;padding:11px 14px;background:var(--teal-soft);color:var(--teal-text);border-radius:10px;font-size:12.5px;line-height:1.5}
.note code{background:rgba(14,146,184,.15);padding:1px 5px;border-radius:4px;font-family:var(--mono)}
.mqtt{border-top:1px solid var(--stroke-2);padding:12px 16px}
.mqtt .topic{font-family:var(--mono);font-size:12.5px;color:var(--teal-text);font-weight:600;margin-bottom:8px}
.mqtt pre{background:#0B2239;color:#CFE3EE;border-radius:10px;padding:12px 14px;overflow-x:auto;font-family:var(--mono);font-size:12px;line-height:1.5;max-height:320px;overflow-y:auto}

/* About */
.about-body{padding:16px 18px;line-height:1.6;max-width:820px}
.about-body h4{margin:16px 0 6px;font-size:14px;color:var(--teal-text)}
.about-body p{margin-bottom:6px;color:var(--ink-2)}
.about-body .features{margin:6px 0 6px 18px}
.about-body .features li{margin-bottom:5px;color:var(--ink-2)}

/* Marine HMI (E/S) */
.hmi-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px}
.led-list{padding:8px 6px}
.led-row{display:flex;align-items:center;gap:12px;width:100%;padding:9px 12px;border:none;background:none;font-family:var(--sans);font-size:13.5px;font-weight:600;color:var(--ink);cursor:pointer;border-radius:8px;text-align:left}
.led-row:hover{background:var(--page)}
.led{width:16px;height:16px;border-radius:50%;flex-shrink:0;box-shadow:inset 0 0 3px rgba(0,0,0,.25)}
.led-on{background:radial-gradient(circle at 35% 35%,#5fdba0,var(--ok));box-shadow:0 0 8px rgba(31,157,107,.6)}
.led-off{background:radial-gradient(circle at 35% 35%,#f08a8d,var(--danger));box-shadow:0 0 8px rgba(229,72,77,.5)}
.ai-list{padding:8px 0}
.ai-row{display:flex;justify-content:space-between;padding:11px 16px;border-bottom:1px solid var(--stroke-2);font-size:13.5px;font-weight:600}
.ai-row .mono{font-size:15px;color:var(--teal-text);font-weight:700}
.sysstatus{padding:14px 16px;display:flex;flex-direction:column;gap:12px}
.sys-row{display:flex;align-items:center;gap:10px;font-weight:700;font-size:14px}
.sys-row.general{justify-content:center;padding:16px;border-radius:12px;letter-spacing:.06em;font-size:15px}
.ga-green{background:var(--ok-soft);color:#14724D;border:2px solid var(--ok)}
.ga-red{background:var(--danger);color:#fff;border:2px solid #B4292E;animation:gablink 1s infinite}
@keyframes gablink{50%{opacity:.55}}
.sys-row.buzzer{color:#B4292E;font-size:12.5px}
.blink{animation:gablink 1s infinite}
.btn-ack{border:1px solid var(--danger);background:var(--danger);color:#fff;border-radius:8px;padding:6px 14px;font-family:var(--sans);font-weight:700;font-size:12px;cursor:pointer;margin-left:auto}
.btn-ack:hover{background:#c73a3f}
.csvbar{display:flex;align-items:center;gap:10px;padding:14px 16px;flex-wrap:wrap;font-size:13px}
.csv-int{border:1px solid var(--stroke);background:var(--card);border-radius:8px;padding:7px 16px;font-family:var(--sans);font-weight:700;font-size:12.5px;cursor:pointer}
.csv-int.active{background:var(--navy);border-color:var(--navy);color:#fff}
.btn-dl{margin-left:auto;font-weight:700;font-size:12.5px;text-decoration:none;border:1px solid var(--teal);color:var(--teal-text);border-radius:8px;padding:7px 14px}
.btn-dl:hover{background:var(--teal-soft)}

/* Trends */
.trend-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.chart.trend{height:200px}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .hmi-grid{grid-template-columns:1fr}
  .trend-grid{grid-template-columns:1fr}
  .appbar .burger{display:block}
  .appbar h1 small{display:none}
  .drawer{position:fixed;top:var(--appbar-h);bottom:0;left:0;z-index:26;transform:translateX(-100%);transition:transform .22s ease;box-shadow:0 8px 30px rgba(11,34,57,.2)}
  .drawer.open{transform:none}
  .content{padding:14px}
  .kpis{grid-template-columns:repeat(2,1fr);gap:10px}
  .kpi .val{font-size:24px}
  .gauges{grid-template-columns:repeat(2,1fr)}
  .map{height:calc(100vh - 200px)}
}
@media(max-width:480px){
  .pill .pilltxt{display:none}
  .clock{display:none}
  .gauges{grid-template-columns:repeat(2,1fr)}
  .cards{grid-template-columns:1fr}
}