:root, [data-theme="dark"]{
  --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;
  --blue:#2FA8E6;
  --purple:#9B8CFF;
  --grid-line:rgba(255,255,255,0.03);
  --font-display:'Space Grotesk',Arial,sans-serif;
  --font-mono:'JetBrains Mono',ui-monospace,monospace;
  --font-body:'Inter',system-ui,sans-serif;
}
[data-theme="light"]{
  --bg:#F0F3F7;
  --panel:#FFFFFF;
  --panel-alt:#F5F7FA;
  --border:#D8DFE8;
  --border-soft:#E4E9F0;
  --text:#101826;
  --text-dim:#5B6B7D;
  --text-faint:#8A97A6;
  --teal:#0E8F82;
  --teal-glow:rgba(14,143,130,0.25);
  --orange:#D9531A;
  --amber:#B87200;
  --red:#D6362E;
  --blue:#1A73B0;
  --purple:#6A56D6;
  --grid-line:rgba(16,24,38,0.05);
}

*{ box-sizing:border-box; }
html,body{ margin:0; padding:0; }
body{
  background:
    radial-gradient(ellipse 1200px 600px at 20% -10%, var(--teal-glow), transparent 60%),
    radial-gradient(ellipse 1000px 700px at 100% 10%, rgba(255,107,53,0.05), transparent 55%),
    var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
  transition:background-color .2s ease, color .2s ease;
}
a{ color:inherit; }
.app{ max-width:1500px; margin:0 auto; padding:20px 24px 60px; }

/* ---------- HEADER / NAV ---------- */
.topbar{ display:flex; align-items:center; gap:14px; 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); }
.theme-toggle{ width:38px; height:38px; border-radius:10px; border:1px solid var(--border); background:var(--panel-alt);
  color:var(--text); cursor:pointer; display:flex; align-items:center; justify-content:center; font-size:16px; }
.theme-toggle:hover{ border-color:var(--teal); }
.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; }
@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.small{ padding:5px 12px; font-size:12px; }
.btn.wide{ width:100%; padding:12px; font-size:14px; }
.btn.primary{ background:var(--teal); border-color:var(--teal); color:#04201c; }
.btn.primary:hover{ filter:brightness(1.1); }

.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:var(--teal-glow); border-color:var(--teal); }

/* ---------- 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:1.4fr 1fr; gap:20px; align-items:start; }
.grid3{ display:grid; grid-template-columns:repeat(3,1fr); gap:16px; }
.grid4{ display:grid; grid-template-columns:repeat(4,1fr); gap:16px; }
@media (max-width:980px){ .grid2,.grid3,.grid4{ grid-template-columns:1fr; } }

/* ---------- KPI CARDS ---------- */
.kpi-grid{ display:grid; grid-template-columns:repeat(auto-fit,minmax(160px,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:24px; font-weight:700; margin-top:6px; }
.kpi-value .unit{ font-size:12px; color:var(--text-dim); margin-left:3px; font-weight:500; }
.kpi-value.warn{ color:var(--amber); }
.kpi-value.alarm{ color:var(--red); }
.kpi-value.good{ color:var(--teal); }
.kpi-delta{ font-size:11px; margin-top:5px; color:var(--text-dim); font-family:var(--font-mono); }

/* ---------- TABLES ---------- */
.table-wrap{ overflow-x:auto; max-height:640px; overflow-y:auto; }
table.data-table{ width:100%; border-collapse:collapse; font-size:12.5px; min-width:900px; }
.data-table th{ text-align:left; padding:9px 10px; color:var(--text-dim); font-size:10.5px; text-transform:uppercase;
  letter-spacing:0.5px; border-bottom:1px solid var(--border); font-weight:700; white-space:nowrap;
  background:var(--panel); position:sticky; top:0; }
.data-table td{ padding:8px 10px; border-bottom:1px solid var(--border-soft); font-family:var(--font-mono); vertical-align:middle; white-space:nowrap; }
.data-table tr:hover td{ background:var(--panel-alt); }
.data-table td.msg{ font-family:var(--font-body); color:var(--text); white-space:normal; }

/* ---------- BADGES ---------- */
.badge{ display:inline-flex; align-items:center; gap:5px; padding:3px 10px; border-radius:999px; font-size:10.5px; font-weight:700; letter-spacing:0.5px; white-space:nowrap; }
.badge.ok{ color:var(--teal); background:var(--teal-glow); }
.badge.warn{ color:var(--amber); background:rgba(255,176,32,0.14); }
.badge.alarm{ color:var(--red); background:rgba(255,76,76,0.14); }
.badge.info{ color:var(--text-dim); background:rgba(124,139,156,0.14); }
.badge.import{ color:var(--blue); background:rgba(47,168,230,0.14); }
.badge.export{ color:var(--purple); background:rgba(155,140,255,0.14); }
.badge.standby{ 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:var(--teal-glow); border-color:var(--teal); }

/* ---------- SEARCH ---------- */
.search-input{ width:100%; max-width:320px; padding:9px 12px; border-radius:8px; border:1px solid var(--border);
  background:var(--bg); color:var(--text); font-family:var(--font-body); font-size:13px; margin-bottom:14px; }
.search-input:focus{ outline:none; border-color:var(--teal); }

/* ---------- CHARTS ---------- */
.chart-wrap svg{ width:100%; height:auto; display:block; }
.chart-legend{ display:flex; gap:14px; 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; }

/* ---------- PARAM PICKER (Trends compare) ---------- */
.param-picker{ display:flex; flex-wrap:wrap; gap:8px; max-height:220px; overflow-y:auto; padding:10px;
  background:var(--panel-alt); border:1px solid var(--border-soft); border-radius:10px; }
.param-chip{ display:flex; align-items:center; gap:6px; padding:6px 10px; border-radius:999px; border:1px solid var(--border);
  background:var(--bg); font-size:11.5px; cursor:pointer; user-select:none; color:var(--text-dim); }
.param-chip.selected{ border-color:var(--teal); color:var(--text); background:var(--teal-glow); }
.param-chip .dot{ width:8px; height:8px; border-radius:50%; }

/* ---------- LOG ---------- */
.log{ font-family:var(--font-mono); font-size:12px; max-height:260px; overflow-y:auto; }
.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.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; }

/* ---------- SLD ---------- */
.sld-wrap{ overflow-x:auto; overflow-y:hidden; border-radius:10px; }
.sld-wrap svg{ display:block; }
.sld-wrap.stopped .pulse-dot{ animation-play-state:paused; opacity:0.4; }
.pulse-dot{ animation:sldPulse 1.8s ease-in-out infinite; transform-box:fill-box; transform-origin:center; }
@keyframes sldPulse{ 0%,100%{ opacity:1; } 50%{ opacity:0.45; } }
.sld-label{ font-family:var(--font-body); font-size:10px; font-weight:700; fill:var(--text-dim); }
.sld-sub{ font-family:var(--font-mono); font-size:8.5px; fill:var(--text-faint); }
.sld-val{ font-family:var(--font-mono); font-size:10px; font-weight:700; fill:var(--text); }

/* ---------- TRANSFORMER CARDS ---------- */
.xfmr-card{ background:var(--panel-alt); border:1px solid var(--border-soft); border-radius:10px; padding:14px; }
.xfmr-card svg{ width:100%; height:100px; display:block; margin-bottom:8px; }
.xfmr-name{ font-family:var(--font-display); font-size:13px; font-weight:700; margin-bottom:2px; }
.xfmr-sub{ font-family:var(--font-mono); font-size:10.5px; color:var(--text-dim); margin-bottom:10px; }
.xfmr-row{ display:flex; justify-content:space-between; font-size:12px; padding:4px 0; border-bottom:1px solid var(--border-soft); }
.xfmr-row:last-child{ border-bottom:none; }
.xfmr-row .k{ color:var(--text-dim); }
.xfmr-row .v{ font-family:var(--font-mono); font-weight:700; }
.load-bar{ height:6px; background:var(--bg); border-radius:4px; overflow:hidden; margin-top:8px; }
.load-bar-fill{ height:100%; border-radius:4px; transition:width 1s ease, background-color .3s ease; }

/* ---------- REPORTS ---------- */
.report-tabs{ display:flex; gap:8px; margin-bottom:18px; }
.report-tabs button{ font-family:var(--font-body); font-weight:700; font-size:13px; padding:9px 18px; border-radius:8px;
  border:1px solid var(--border); background:var(--panel-alt); color:var(--text-dim); cursor:pointer; }
.report-tabs button.active{ color:#04201c; background:var(--teal); border-color:var(--teal); }
.report-header{ text-align:center; padding:14px 0 20px; border-bottom:2px solid var(--border); margin-bottom:18px; }
.report-header h1{ font-family:var(--font-display); font-size:20px; margin:0 0 4px; }
.report-header p{ margin:0; font-size:12px; color:var(--text-dim); }

@media print{
  body{ background:#fff !important; color:#111 !important; }
  .topbar,.navbar,.no-print{ display:none !important; }
  .panel{ border:1px solid #ccc !important; background:#fff !important; break-inside:avoid; }
  .app{ max-width:100%; padding:0; }
}

/* ---------- 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; }
}