:root{
  --bg:#080B10;
  --panel:#121826;
  --panel-alt:#161E2E;
  --border:#223047;
  --border-soft:#1A2436;
  --text:#E8EDF2;
  --text-dim:#7C8B9C;
  --text-faint:#4E5C6E;
  --teal:#17C3B2;
  --teal-glow:rgba(23,195,178,0.35);
  --orange:#FF6B35;
  --amber:#FFB020;
  --red:#FF4C4C;
  --grain:#C9A66B;
  --font-display:'Space Grotesk',Arial,sans-serif;
  --font-mono:'JetBrains Mono',ui-monospace,monospace;
  --font-body:'Inter',system-ui,sans-serif;
}
*{ box-sizing:border-box; }
html,body{ margin:0; padding:0; }
body{
  background:
    radial-gradient(ellipse 1200px 600px at 20% -10%, rgba(23,195,178,0.06), transparent 60%),
    radial-gradient(ellipse 1000px 700px at 100% 10%, rgba(255,107,53,0.05), transparent 55%),
    linear-gradient(var(--border-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-soft) 1px, transparent 1px),
    var(--bg);
  background-size: auto, auto, 44px 44px, 44px 44px, auto;
  background-position: 0 0, 0 0, -1px -1px, -1px -1px, 0 0;
  color:var(--text);
  font-family:var(--font-body);
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}
a{ color:inherit; }
.app{ max-width:1400px; margin:0 auto; padding:20px 24px 60px; }

/* ---------- HEADER / NAV ---------- */
.topbar{ display:flex; align-items:center; gap:16px; padding:12px 20px;
  background:linear-gradient(180deg, var(--panel), var(--panel-alt));
  border:1px solid var(--border); border-radius:12px; margin-bottom:14px; flex-wrap:wrap; }
.brand{ display:flex; align-items:center; gap:10px; }
.brand svg{ width:34px; height:34px; flex-shrink:0; }
.brand-text{ line-height:1.15; }
.brand-name{ font-family:var(--font-display); font-weight:700; font-size:15px; letter-spacing:0.5px; }
.brand-name span{ color:var(--orange); }
.brand-sub{ font-size:10px; color:var(--text-dim); letter-spacing:1.2px; text-transform:uppercase; }
.topbar-spacer{ flex:1; }
.user-chip{ display:flex; align-items:center; gap:8px; }
.user-chip .op-name{ font-family:var(--font-mono); font-size:12px; color:var(--text-dim); }
.status-pill{ display:flex; align-items:center; gap:8px; padding:7px 14px; border-radius:999px;
  background:rgba(23,195,178,0.1); border:1px solid rgba(23,195,178,0.4);
  font-family:var(--font-mono); font-size:12px; font-weight:600; letter-spacing:1px; color:var(--teal); white-space:nowrap; }
.status-pill .dot{ width:8px; height:8px; border-radius:50%; background:var(--teal); box-shadow:0 0 8px var(--teal-glow); animation:blink 1.6s ease-in-out infinite; }
.status-pill.stopped{ background:rgba(124,139,156,0.1); border-color:rgba(124,139,156,0.35); color:var(--text-dim); }
.status-pill.stopped .dot{ background:var(--text-dim); box-shadow:none; animation:none; }
@keyframes blink{ 0%,100%{opacity:1;} 50%{opacity:0.35;} }
.clock{ font-family:var(--font-mono); font-size:12px; color:var(--text-dim); text-align:right; line-height:1.4; }
.clock b{ color:var(--text); font-size:13px; }
.btn{ font-family:var(--font-body); font-weight:600; font-size:13px; padding:9px 16px; border-radius:8px;
  border:1px solid var(--border); background:var(--panel-alt); color:var(--text); cursor:pointer; transition:all .15s ease; }
.btn:hover{ border-color:var(--teal); }
.btn.run{ background:var(--red); border-color:var(--red); color:#fff; }
.btn.run:hover{ filter:brightness(1.1); }
.btn.go{ background:var(--teal); border-color:var(--teal); color:#04201c; }
.btn.go:hover{ filter:brightness(1.1); }
.btn.small{ padding:5px 12px; font-size:12px; }
.btn.wide{ width:100%; padding:12px; font-size:14px; }

.navbar{ display:flex; gap:4px; flex-wrap:wrap; padding:8px 12px; background:var(--panel);
  border:1px solid var(--border); border-radius:12px; margin-bottom:20px; }
.navbar a{ padding:9px 16px; border-radius:8px; font-size:13px; font-weight:600; color:var(--text-dim);
  text-decoration:none; border:1px solid transparent; transition:all .15s ease; }
.navbar a:hover{ color:var(--text); background:var(--panel-alt); }
.navbar a.active{ color:var(--teal); background:rgba(23,195,178,0.1); border-color:rgba(23,195,178,0.35); }

/* ---------- PANELS ---------- */
.panel{ background:linear-gradient(180deg, var(--panel), var(--panel-alt)); border:1px solid var(--border);
  border-radius:12px; padding:18px 20px; margin-bottom:20px; }
.panel-head{ display:flex; align-items:baseline; justify-content:space-between; margin-bottom:14px; gap:10px; flex-wrap:wrap; }
.panel-head h2{ font-family:var(--font-display); font-size:14px; letter-spacing:1px; text-transform:uppercase;
  margin:0; color:var(--text-dim); font-weight:700; }
.panel-head .tag{ font-family:var(--font-mono); font-size:11px; color:var(--text-faint); }
.page-head{ margin-bottom:18px; }
.page-head h1{ font-family:var(--font-display); font-size:22px; margin:0 0 4px; font-weight:700; }
.page-head p{ margin:0; font-size:13px; color:var(--text-dim); }

.grid2{ display:grid; grid-template-columns:1.35fr 1fr; gap:20px; align-items:start; }
@media (max-width:980px){ .grid2{ grid-template-columns:1fr; } }

/* ---------- KPI CARDS ---------- */
.kpi-grid{ display:grid; grid-template-columns:repeat(auto-fit,minmax(150px,1fr)); gap:14px; }
.kpi-card{ background:var(--panel-alt); border:1px solid var(--border-soft); border-radius:10px; padding:14px 16px; }
.kpi-label{ font-size:11px; color:var(--text-dim); text-transform:uppercase; letter-spacing:1px; font-weight:600; }
.kpi-value{ font-family:var(--font-mono); font-size:26px; font-weight:700; margin-top:6px; }
.kpi-value .unit{ font-size:13px; color:var(--text-dim); margin-left:3px; font-weight:500; }
.kpi-value.warn{ color:var(--amber); }
.kpi-value.alarm{ color:var(--red); }
.kpi-delta{ font-size:11px; margin-top:5px; color:var(--text-dim); font-family:var(--font-mono); }

/* ---------- GAUGES ---------- */
.gauges{ display:grid; grid-template-columns:repeat(3,1fr); gap:14px; }
@media (max-width:520px){ .gauges{ grid-template-columns:1fr; } }
.gauge-card{ background:var(--panel-alt); border:1px solid var(--border-soft); border-radius:10px; padding:14px 10px; text-align:center; }
.gauge-card svg{ width:100px; height:100px; }
.gauge-ring-bg{ fill:none; stroke:var(--border); stroke-width:9; }
.gauge-ring{ fill:none; stroke-width:9; stroke-linecap:round; transition:stroke-dashoffset 1.2s ease; }
.gauge-num{ font-family:var(--font-mono); font-size:19px; font-weight:700; fill:var(--text); }
.gauge-unit{ font-family:var(--font-mono); font-size:10px; fill:var(--text-dim); }
.gauge-label{ font-family:var(--font-body); font-size:11px; color:var(--text-dim); letter-spacing:1px; text-transform:uppercase; margin-top:6px; font-weight:600; }

/* ---------- BARS ---------- */
.bar-row{ display:flex; align-items:center; gap:10px; margin-bottom:12px; }
.bar-row:last-child{ margin-bottom:0; }
.bar-label{ width:78px; font-size:11px; color:var(--text-dim); font-weight:600; letter-spacing:0.5px; flex-shrink:0; }
.bar-track{ flex:1; height:10px; background:var(--panel-alt); border:1px solid var(--border-soft); border-radius:6px; overflow:hidden; }
.bar-fill{ height:100%; border-radius:6px; transition:width 1.2s ease, background-color .4s ease; }
.bar-val{ width:70px; text-align:right; font-family:var(--font-mono); font-size:13px; font-weight:700; flex-shrink:0; }

/* ---------- TABLES ---------- */
.table-wrap{ overflow-x:auto; }
table.data-table{ width:100%; border-collapse:collapse; font-size:13px; min-width:640px; }
.data-table th{ text-align:left; padding:9px 10px; color:var(--text-dim); font-size:11px; text-transform:uppercase;
  letter-spacing:0.5px; border-bottom:1px solid var(--border); font-weight:600; white-space:nowrap; }
.data-table td{ padding:10px; border-bottom:1px solid var(--border-soft); font-family:var(--font-mono); vertical-align:middle; }
.data-table tr:hover td{ background:var(--panel-alt); }
.data-table td.msg{ font-family:var(--font-body); color:var(--text); }

/* ---------- BADGES ---------- */
.badge{ display:inline-flex; align-items:center; gap:5px; padding:3px 10px; border-radius:999px; font-size:11px; font-weight:700; letter-spacing:0.5px; white-space:nowrap; }
.badge.ok{ color:var(--teal); background:rgba(23,195,178,0.12); }
.badge.warn{ color:var(--amber); background:rgba(255,176,32,0.12); }
.badge.alarm{ color:var(--red); background:rgba(255,76,76,0.12); }
.badge.info{ color:var(--text-dim); background:rgba(124,139,156,0.12); }
.badge.acked{ color:var(--text-faint); background:rgba(124,139,156,0.08); }

/* ---------- FILTER TABS ---------- */
.filter-tabs{ display:flex; gap:8px; margin-bottom:14px; flex-wrap:wrap; }
.filter-tabs button{ font-family:var(--font-body); font-weight:600; font-size:12px; padding:7px 14px; border-radius:999px;
  border:1px solid var(--border); background:var(--panel-alt); color:var(--text-dim); cursor:pointer; }
.filter-tabs button.active{ color:var(--teal); background:rgba(23,195,178,0.1); border-color:rgba(23,195,178,0.4); }

/* ---------- CHARTS ---------- */
.chart-wrap svg{ width:100%; height:auto; display:block; }
.chart-legend{ display:flex; gap:16px; flex-wrap:wrap; margin-top:12px; font-size:12px; }
.chart-legend label{ display:flex; align-items:center; gap:6px; cursor:pointer; color:var(--text-dim); user-select:none; }
.chart-legend input{ accent-color:var(--teal); }
.chart-legend i{ width:10px; height:3px; display:inline-block; border-radius:2px; }

/* ---------- LOG ---------- */
.log{ font-family:var(--font-mono); font-size:12px; max-height:260px; overflow-y:auto; }
.log::-webkit-scrollbar{ width:6px; }
.log::-webkit-scrollbar-thumb{ background:var(--border); border-radius:3px; }
.log-entry{ display:flex; gap:10px; padding:6px 0; border-bottom:1px solid var(--border-soft); }
.log-entry:last-child{ border-bottom:none; }
.log-time{ color:var(--text-faint); flex-shrink:0; }
.log-tag{ flex-shrink:0; font-weight:700; width:64px; }
.log-tag.SYSTEM{ color:var(--teal); }
.log-tag.INFO{ color:var(--text-dim); }
.log-tag.OPERATOR{ color:#2FD3E6; }
.log-tag.WARNING{ color:var(--amber); }
.log-tag.ALARM{ color:var(--red); }
.log-msg{ color:var(--text); }

/* ---------- FOOTER ---------- */
.footer-bar{ margin-top:20px; display:flex; flex-wrap:wrap; gap:20px; justify-content:space-between; align-items:center;
  padding:12px 20px; border:1px solid var(--border); border-radius:12px; background:var(--panel);
  font-family:var(--font-mono); font-size:11px; color:var(--text-dim); }
.footer-bar b{ color:var(--text); }
.legend{ display:flex; gap:16px; flex-wrap:wrap; }
.legend span{ display:inline-flex; align-items:center; gap:6px; }
.legend i{ width:8px; height:8px; border-radius:50%; display:inline-block; }

/* ---------- DIAGRAM (P&ID page) ---------- */
.diagram-wrap.stopped svg .spin{ animation-play-state:paused; }
.diagram-wrap.stopped svg .flow-dash{ animation-play-state:paused; }
.diagram-wrap.stopped{ opacity:0.55; filter:grayscale(0.4); }
.diagram-wrap svg{ width:100%; height:auto; display:block; }
.spin{ transform-box:fill-box; transform-origin:center; animation:rotate linear infinite; }
@keyframes rotate{ to{ transform:rotate(360deg); } }
.pulse-dot{ animation:pulseDot 2s ease-in-out infinite; transform-box:fill-box; transform-origin:center; }
@keyframes pulseDot{ 0%,100%{ opacity:1; transform:scale(1); } 50%{ opacity:0.55; transform:scale(1.3); } }
.flow-dash{ stroke-dasharray:6 6; animation:dashMove 1s linear infinite; }
@keyframes dashMove{ to{ stroke-dashoffset:-24; } }
.elevator-flow{ animation:elevatorMove 1.4s linear infinite; }
@keyframes elevatorMove{ to{ stroke-dashoffset:-60; } }
.sensor-label{ font-family:var(--font-mono); font-size:11px; fill:var(--text-dim); letter-spacing:1px; }
.sensor-value{ font-family:var(--font-mono); font-size:20px; font-weight:700; fill:var(--text); }
.sensor-unit{ font-family:var(--font-mono); font-size:12px; fill:var(--text-dim); }
.sensor-value.alarm{ fill:var(--red); }
.sensor-value.warn{ fill:var(--amber); }
.level-fill{ transition:y 1.4s ease, height 1.4s ease; }

/* ---------- LOGIN ---------- */
.login-wrap{ min-height:80vh; display:flex; align-items:center; justify-content:center; padding:20px; }
.login-card{ width:100%; max-width:380px; background:linear-gradient(180deg, var(--panel), var(--panel-alt));
  border:1px solid var(--border); border-radius:14px; padding:30px 28px; }
.login-card .brand{ justify-content:center; margin-bottom:22px; }
.login-card h1{ font-family:var(--font-display); font-size:18px; text-align:center; margin:0 0 4px; }
.login-card p.sub{ text-align:center; font-size:12px; color:var(--text-dim); margin:0 0 22px; }
.field{ margin-bottom:14px; }
.field label{ display:block; font-size:11px; color:var(--text-dim); text-transform:uppercase; letter-spacing:1px; font-weight:600; margin-bottom:6px; }
.field input{ width:100%; padding:11px 12px; border-radius:8px; border:1px solid var(--border); background:var(--bg);
  color:var(--text); font-family:var(--font-body); font-size:14px; }
.field input:focus{ outline:none; border-color:var(--teal); }
.login-note{ margin-top:16px; font-size:11px; color:var(--text-faint); text-align:center; line-height:1.5; }
.login-error{ color:var(--red); font-size:12px; margin-bottom:12px; display:none; }
.login-error.show{ display:block; }
.login-links{ display:flex; justify-content:space-between; margin-top:14px; font-size:12px; }
.login-links a{ color:var(--text-faint); text-decoration:none; }

@media (max-width:640px){
  .topbar{ padding:12px; }
  .clock{ text-align:left; }
}

/* ---------- UHT P&ID SYMBOLS ---------- */
.diagram-wrap.stopped svg .pump-spin{ animation-play-state:paused; }
.diagram-wrap.stopped svg .pipe-flow{ animation-play-state:paused; }
.pump-spin{ transform-box:fill-box; transform-origin:center; animation:pumpspin linear infinite; }
@keyframes pumpspin{ to{ transform:rotate(360deg); } }
.pipe-flow{ stroke-dasharray:10 8; animation:pipeflow 1s linear infinite; }
@keyframes pipeflow{ to{ stroke-dashoffset:-36; } }
.instr-bubble circle{ fill:#121826; stroke:#3A4A60; stroke-width:2; }
.instr-bubble text{ font-family:'JetBrains Mono',monospace; fill:#E8EDF2; text-anchor:middle; }
.instr-tag{ font-size:9px; fill:#7C8B9C; }
.instr-fn{ font-size:10px; font-weight:700; }
.equip-label{ font-family:'Inter',sans-serif; font-size:10.5px; font-weight:700; fill:#AEB9C4; letter-spacing:0.4px; text-anchor:middle; }
.equip-sub{ font-family:'JetBrains Mono',monospace; font-size:8.5px; fill:#5E6E80; text-anchor:middle; }
.valve-open polygon{ fill:#17C3B2; stroke:#0B2E2A; stroke-width:1.5; }
.valve-closed polygon{ fill:#FF4C4C; stroke:#3A0E0E; stroke-width:1.5; }
.valve-modulating polygon{ fill:#FFB020; stroke:#3A2A00; stroke-width:1.5; }
.pipe-milk{ stroke:#E7D9AE; }
.pipe-hotwater{ stroke:#FF6B35; }
.pipe-chilledwater{ stroke:#2FA8E6; }
.pipe-divert{ stroke:#FF4C4C; stroke-dasharray:4 5; }
.readout-box{ fill:#121826; stroke:#223047; stroke-width:1.5; }
.readout-label{ font-family:'JetBrains Mono',monospace; font-size:9.5px; fill:#7C8B9C; letter-spacing:0.5px; }
.readout-val{ font-family:'JetBrains Mono',monospace; font-size:15px; font-weight:700; fill:#E8EDF2; }
.readout-val.dev-warn{ fill:#FFB020; }
.readout-val.dev-alarm{ fill:#FF4C4C; }
.readout-unit{ font-family:'JetBrains Mono',monospace; font-size:9.5px; fill:#7C8B9C; }