/* ═══════════════════════════════════════════════════════════
   POWERGUARD SCADA — REFINERY DARK THEME
   Palette: Warm Charcoal · Amber-Gold · Slate
   ═══════════════════════════════════════════════════════════ */

/* ─── RESET ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ─── TOKENS ─────────────────────────────────────────────── */
:root {
  /* Backgrounds — warm near-black, not blue */
  --bg:       #0e0e10;
  --bg-2:     #141416;
  --bg-3:     #1a1a1d;
  --bg-4:     #202025;
  --bg-5:     #26262c;

  /* Borders — warm gray, never blue */
  --line:     #2a2a30;
  --line-2:   #38383f;
  --line-3:   #50505a;

  /* Brand — petroleum amber/gold */
  --gold:     #d97706;
  --gold-lt:  #f59e0b;
  --gold-dk:  #92400e;
  --gold-bg:  #d9770610;
  --gold-bg2: #d9770622;

  /* Status */
  --green:    #22c55e;
  --green-bg: #22c55e12;
  --red:      #e84040;
  --red-bg:   #e8404012;
  --amber:    #f59e0b;
  --amber-bg: #f59e0b12;
  --blue:     #3b82f6;
  --blue-bg:  #3b82f612;

  /* Text */
  --t1: #f0f0f2;
  --t2: #a0a0b0;
  --t3: #606070;
  --t4: #38383f;

  /* Fonts */
  --sans: 'IBM Plex Sans', system-ui, sans-serif;
  --mono: 'IBM Plex Mono', 'Courier New', monospace;

  /* Geometry */
  --r:   6px;
  --r2: 10px;
}

/* ─── BASE ───────────────────────────────────────────────── */
html { font-size: 13px; scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--t1);
  min-height: 100vh;
  overflow-x: hidden;
}

::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--bg-5); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--line-3); }

/* ─── TOPBAR ─────────────────────────────────────────────── */
.topbar {
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 18px;
  background: var(--bg-2);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 200;
}

.topbar-left { display: flex; align-items: center; gap: 16px; }
.topbar-right { display: flex; align-items: center; gap: 14px; }
.topbar-divider { width: 1px; height: 22px; background: var(--line); }

.brand { display: flex; align-items: center; gap: 10px; }
.brand-text { display: flex; flex-direction: column; line-height: 1; }
.brand-name { font-size: 14px; font-weight: 700; color: var(--gold); letter-spacing: 0.2px; }
.brand-sub  { font-size: 10px; color: var(--t3); font-family: var(--mono); margin-top: 2px; }

.plant-label {
  font-size: 11px; font-weight: 500; color: var(--t3);
  letter-spacing: 0.8px; text-transform: uppercase; font-family: var(--mono);
}

/* Nav */
.topbar-nav { display: flex; gap: 2px; }
.nav-btn {
  display: flex; align-items: center; gap: 6px;
  padding: 5px 13px;
  background: none; border: 1px solid transparent;
  border-radius: var(--r); color: var(--t3);
  font-family: var(--sans); font-size: 12px; font-weight: 500;
  cursor: pointer; transition: color 0.15s, background 0.15s, border-color 0.15s;
  position: relative; white-space: nowrap;
}
.nav-btn:hover { color: var(--t1); background: var(--bg-3); }
.nav-btn.active {
  color: var(--gold); background: var(--gold-bg2);
  border-color: var(--gold-dk);
}
.alarm-nav { }
.alarm-badge {
  background: var(--red); color: #fff; border-radius: 8px;
  padding: 1px 5px; font-size: 10px; font-weight: 700;
  display: none; min-width: 16px; text-align: center;
}
.alarm-badge.show { display: inline-block; }

/* Status */
.sys-status { display: flex; align-items: center; gap: 6px; }
.led {
  width: 7px; height: 7px; border-radius: 50%;
}
.led-green {
  background: var(--green);
  box-shadow: 0 0 0 2px var(--green-bg);
  animation: led-pulse 2.4s ease-in-out infinite;
}
@keyframes led-pulse {
  0%, 100% { box-shadow: 0 0 0 2px var(--green-bg); }
  50%       { box-shadow: 0 0 0 5px transparent; }
}
.sys-status-text { font-size: 11px; font-weight: 600; color: var(--green); letter-spacing: 0.6px; font-family: var(--mono); }

.clock-block { display: flex; flex-direction: column; align-items: flex-end; line-height: 1; }
.clock-label { font-size: 9px; color: var(--t3); letter-spacing: 0.8px; }
.clock-val { font-family: var(--mono); font-size: 13px; font-weight: 600; color: var(--t1); }

.iec-tag {
  font-size: 9px; font-weight: 700; letter-spacing: 0.8px;
  padding: 3px 7px; border: 1px solid var(--gold-dk);
  border-radius: 4px; color: var(--gold); background: var(--gold-bg);
  font-family: var(--mono);
}

/* ─── MARQUEE BAR ────────────────────────────────────────── */
.marq-bar {
  height: 26px; background: var(--bg-2);
  border-bottom: 1px solid var(--line);
  display: flex; align-items: center; gap: 10px;
  padding: 0 14px; overflow: hidden;
}
.marq-tag {
  font-size: 9px; font-weight: 700; letter-spacing: 1px; color: var(--gold);
  background: var(--gold-bg2); padding: 2px 7px; border-radius: 3px;
  white-space: nowrap; font-family: var(--mono);
}
.marq-wrap { flex: 1; overflow: hidden; }
.marq-text {
  display: inline-block;
  font-family: var(--mono); font-size: 10px; color: var(--t2);
  white-space: nowrap;
  animation: marq 50s linear infinite;
}
@keyframes marq { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ─── PAGE WRAPPER ───────────────────────────────────────── */
.app-main { padding: 14px 16px; min-height: calc(100vh - 78px); }
.page { display: none; animation: pg-in 0.25s ease; }
.page.active { display: block; }
@keyframes pg-in { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

/* ─── KPI STRIP ──────────────────────────────────────────── */
.kpi-strip {
  display: flex; align-items: center;
  background: var(--bg-2); border: 1px solid var(--line);
  border-radius: var(--r2); padding: 10px 18px;
  margin-bottom: 12px; gap: 0;
}
.kpi-item {
  display: flex; flex-direction: column; align-items: center;
  padding: 0 18px; position: relative; min-width: 70px;
}
.kpi-badge-item { flex-direction: row; gap: 6px; align-items: center; }
.kpi-val {
  font-family: var(--mono); font-size: 22px; font-weight: 600;
  color: var(--t1); line-height: 1;
}
.kpi-val.kpi-green  { color: var(--green); }
.kpi-val.kpi-red    { color: var(--red); }
.kpi-val.kpi-amber  { color: var(--amber); }
.kpi-val.kpi-gold   { color: var(--gold-lt); }
.kpi-val.kpi-dim    { color: var(--t3); }
.kpi-label {
  font-size: 9px; font-weight: 600; letter-spacing: 0.8px;
  color: var(--t3); text-transform: uppercase; margin-top: 3px;
}
.kpi-sep { width: 1px; height: 34px; background: var(--line); }

/* ─── UPS GRID ───────────────────────────────────────────── */
.ups-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 12px;
}

.ups-card {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--r2);
  padding: 12px 14px;
  cursor: default;
  transition: border-color 0.2s, box-shadow 0.2s;
  position: relative;
}
.ups-card:hover { border-color: var(--line-2); box-shadow: 0 4px 16px #00000040; }

/* Left accent bar */
.ups-card::before {
  content: '';
  position: absolute; left: 0; top: 12px; bottom: 12px;
  width: 3px; border-radius: 2px;
  background: var(--line-2);
  transition: background 0.3s;
}
.ups-card.st-online::before  { background: var(--green); }
.ups-card.st-battery::before { background: var(--amber); }
.ups-card.st-fault::before   { background: var(--red); animation: bar-blink 0.8s step-end infinite; }
.ups-card.st-bypass::before  { background: var(--blue); }
@keyframes bar-blink { 0%,100%{opacity:1}50%{opacity:0.2} }

.ups-card-top {
  display: flex; justify-content: space-between; align-items: flex-start;
  margin-bottom: 10px;
}
.ups-id-block {}
.ups-id  { font-family: var(--mono); font-size: 13px; font-weight: 600; color: var(--t1); }
.ups-ip  { font-family: var(--mono); font-size: 9px; color: var(--t3); margin-top: 1px; }
.ups-pill {
  font-size: 9px; font-weight: 700; letter-spacing: 0.4px;
  padding: 2px 7px; border-radius: 3px;
}
.pill-online  { background: var(--green-bg);  color: var(--green); border: 1px solid #22c55e44; }
.pill-battery { background: var(--amber-bg);  color: var(--amber); border: 1px solid #f59e0b44; }
.pill-fault   { background: var(--red-bg);    color: var(--red);   border: 1px solid #e8404044; }
.pill-bypass  { background: var(--blue-bg);   color: var(--blue);  border: 1px solid #3b82f644; }

/* Ring + metrics row */
.ups-body {
  display: flex; gap: 10px; align-items: center;
}
.ring-wrap {
  flex-shrink: 0; position: relative; width: 58px; height: 58px;
}
.ring-wrap svg { display: block; }
.ring-center {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  line-height: 1;
}
.ring-pct { font-family: var(--mono); font-size: 13px; font-weight: 600; color: var(--t1); }
.ring-unit { font-size: 8px; color: var(--t3); margin-top: 1px; }

.ups-metrics { flex: 1; display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.met { display: flex; flex-direction: column; gap: 1px; }
.met-l { font-size: 8px; color: var(--t3); letter-spacing: 0.4px; text-transform: uppercase; }
.met-v { font-family: var(--mono); font-size: 14px; font-weight: 500; color: var(--t1); }
.met-u { font-size: 8px; color: var(--t3); }

.ups-card-foot {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: 10px; padding-top: 8px; border-top: 1px solid var(--line);
  font-family: var(--mono); font-size: 9px; color: var(--t3);
}
.poll-dot {
  display: inline-block; width: 5px; height: 5px;
  background: var(--green); border-radius: 50%;
  margin-right: 4px; animation: led-pulse 2s infinite;
}

/* ─── BOTTOM PANELS ──────────────────────────────────────── */
.dash-bottom { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.panel {
  background: var(--bg-2); border: 1px solid var(--line);
  border-radius: var(--r2); padding: 12px 14px;
}
.panel-head {
  font-size: 10px; font-weight: 700; letter-spacing: 0.8px; color: var(--t2);
  margin-bottom: 10px; display: flex; align-items: center; gap: 6px;
  text-transform: uppercase;
}
.panel-dot { width: 6px; height: 6px; border-radius: 50%; }
.panel-dot-green { background: var(--green); }
.panel-dot-blue  { background: var(--blue); }
.panel-dot-amber { background: var(--gold); }

.panel-rows { display: flex; flex-direction: column; }
.panel-row {
  display: flex; align-items: center; gap: 8px;
  padding: 5px 0; border-bottom: 1px solid var(--line);
  font-size: 11px;
}
.panel-row:last-child { border-bottom: none; }
.pr-key { font-family: var(--mono); font-size: 9px; color: var(--t3); min-width: 46px; }
.pr-val { flex: 1; color: var(--t2); }
.status-pip {
  font-family: var(--mono); font-size: 9px; font-weight: 700;
  padding: 1px 6px; border-radius: 3px;
}
.pip-ok { background: var(--green-bg); color: var(--green); }
.pip-err { background: var(--red-bg); color: var(--red); }

.int-lozenge {
  font-size: 9px; font-weight: 700; padding: 2px 6px;
  border-radius: 3px; font-family: var(--mono);
}
.loz-pi  { background: #1e3a5c; color: #60a5fa; }
.loz-sap { background: #1a3020; color: var(--green); }
.loz-dcs { background: #2a1a1a; color: var(--red); }
.loz-db  { background: #2a1a2a; color: #c084fc; }

.check-icon { color: var(--green); font-size: 12px; min-width: 14px; }

/* ─── SNMP FLOW PAGE ─────────────────────────────────────── */
.flow-page { max-width: 1060px; margin: 0 auto; }
.flow-hero { text-align: center; margin-bottom: 24px; }
.flow-hero h2 { font-size: 20px; font-weight: 700; color: var(--t1); margin-bottom: 5px; }
.flow-hero p  { font-size: 12px; color: var(--t2); }
.flow-ctrls { display: flex; gap: 8px; justify-content: center; margin-top: 14px; }

.btn-solid {
  padding: 8px 18px; background: var(--gold); color: #0e0e10;
  border: none; border-radius: var(--r); font-family: var(--sans);
  font-size: 12px; font-weight: 700; cursor: pointer; transition: background 0.15s;
}
.btn-solid:hover { background: var(--gold-lt); }
.btn-outlined {
  padding: 8px 18px; background: transparent; border: 1px solid;
  border-radius: var(--r); font-family: var(--sans);
  font-size: 12px; font-weight: 600; cursor: pointer; transition: background 0.15s;
}
.btn-fault { color: var(--red); border-color: var(--red); }
.btn-fault:hover { background: var(--red-bg); }
.btn-ghost {
  padding: 8px 18px; background: transparent; border: 1px solid var(--line-2);
  border-radius: var(--r); color: var(--t2); font-family: var(--sans);
  font-size: 12px; cursor: pointer; transition: border-color 0.15s, color 0.15s;
}
.btn-ghost:hover { border-color: var(--line-3); color: var(--t1); }

/* Stepper */
.stepper-wrap {
  background: var(--bg-2); border: 1px solid var(--line);
  border-radius: var(--r2); padding: 24px 28px; margin-bottom: 12px;
}
.stepper {
  display: flex; align-items: flex-start;
  position: relative;
}
/* horizontal line behind circles */
.stepper::before {
  content: '';
  position: absolute; top: 20px; left: 20px; right: 20px; height: 1px;
  background: var(--line-2); z-index: 0;
}
.step-node {
  flex: 1; display: flex; flex-direction: column; align-items: center;
  position: relative; z-index: 1;
}
.step-circle {
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--bg-3); border: 2px solid var(--line-2);
  display: flex; align-items: center; justify-content: center;
  color: var(--t3); transition: border-color 0.3s, color 0.3s, background 0.3s;
  margin-bottom: 8px;
}
.step-node.active .step-circle {
  border-color: var(--gold); color: var(--gold);
  background: var(--gold-bg2); box-shadow: 0 0 0 4px var(--gold-bg);
}
.step-node.done .step-circle {
  border-color: var(--green); color: var(--green); background: var(--green-bg);
}
.step-node.fault .step-circle {
  border-color: var(--red); color: var(--red); background: var(--red-bg);
}
.step-label { font-size: 11px; font-weight: 600; color: var(--t2); text-align: center; line-height: 1.3; }
.step-node.active .step-label { color: var(--gold); }
.step-node.done .step-label   { color: var(--green); }
.step-sub { font-family: var(--mono); font-size: 9px; color: var(--t3); margin-top: 3px; text-align: center; }

/* Connector line between steps (overrides the ::before background reveal) */
.step-connector {
  position: absolute; top: 20px; left: 50%; right: -50%;
  height: 2px; background: var(--line-2); z-index: -1;
  transition: background 0.3s;
}
.step-node:last-child .step-connector { display: none; }
.step-node.active .step-connector,
.step-node.done  .step-connector { background: var(--gold); }

/* Step detail cards */
.step-detail-row {
  display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px;
  margin-bottom: 14px;
}
.step-detail {
  background: var(--bg-2); border: 1px solid var(--line);
  border-radius: var(--r); padding: 12px;
  transition: border-color 0.3s, background 0.3s;
}
.step-detail.inactive { opacity: 0.45; }
.step-detail.active   { opacity: 1; border-color: var(--gold); background: var(--gold-bg); }
.step-detail.done     { opacity: 0.8; border-color: #22c55e44; }
.sd-num { font-family: var(--mono); font-size: 9px; color: var(--t3); margin-bottom: 5px; letter-spacing: 1px; }
.step-detail.active .sd-num { color: var(--gold); }
.sd-title { font-size: 11px; font-weight: 600; color: var(--t1); margin-bottom: 5px; }
.sd-body  { font-size: 10px; color: var(--t2); line-height: 1.5; }
.sd-oid   { font-family: var(--mono); font-size: 9px; color: var(--amber); margin-top: 6px; background: var(--amber-bg); padding: 3px 6px; border-radius: 3px; word-break: break-all; }

/* OID Card */
.oid-card {
  background: var(--bg-2); border: 1px solid var(--line);
  border-radius: var(--r2); overflow: hidden;
}
.oid-card-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px; background: var(--bg-3); border-bottom: 1px solid var(--line);
  font-family: var(--mono); font-size: 10px; color: var(--t2);
}
.oid-live-dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--green);
  animation: led-pulse 2s infinite;
}
.oid-scroll { overflow-x: auto; }
.oid-tbl { width: 100%; border-collapse: collapse; font-size: 11px; }
.oid-tbl th {
  background: var(--bg-3); color: var(--t3);
  padding: 7px 12px; text-align: left; font-size: 9px;
  letter-spacing: 0.6px; font-weight: 700; text-transform: uppercase;
  border-bottom: 1px solid var(--line);
}
.oid-tbl td { padding: 7px 12px; border-bottom: 1px solid #ffffff06; font-family: var(--mono); }
.oid-tbl tr:last-child td { border-bottom: none; }
.oid-tbl tr:hover td { background: var(--bg-3); }
.oid-tbl .oid-col { color: var(--t3); font-size: 10px; }
.st-ok   { color: var(--green); }
.st-warn { color: var(--amber); }
.st-fault{ color: var(--red); font-weight: 600; }

/* ─── ARCHITECTURE PAGE ──────────────────────────────────── */
.arch-page { max-width: 1060px; margin: 0 auto; }
.arch-hero { text-align: center; margin-bottom: 18px; }
.arch-hero h2 { font-size: 20px; font-weight: 700; margin-bottom: 4px; }
.arch-hero p  { font-size: 12px; color: var(--t2); }

.purdue-wrap { display: grid; grid-template-columns: 1fr 340px; gap: 12px; align-items: start; }
.purdue-levels {
  border: 1px solid var(--line); border-radius: var(--r2); overflow: hidden;
}

.plvl {
  display: flex; align-items: stretch;
  border-bottom: 1px solid var(--line);
  cursor: pointer; transition: filter 0.15s;
  min-height: 82px;
}
.plvl:last-child { border-bottom: none; }
.plvl:hover { filter: brightness(1.07); }
.plvl.selected { outline: 2px solid var(--gold); outline-offset: -2px; }

.plvl-label {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  min-width: 148px; padding: 10px 12px; text-align: center;
  border-right: 1px solid var(--line);
}
.plvl-badge {
  font-family: var(--mono); font-size: 9px; font-weight: 700; letter-spacing: 0.8px;
  padding: 2px 8px; border-radius: 3px; margin-bottom: 5px;
}
.plvl-name { font-size: 11px; font-weight: 600; }
.plvl-content {
  flex: 1; display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; flex-wrap: wrap;
}
.arch-comp {
  background: var(--bg-3); border: 1px solid var(--line);
  border-radius: var(--r); padding: 8px 10px;
  display: flex; flex-direction: column; gap: 2px;
  transition: border-color 0.15s;
}
.arch-comp:hover { border-color: var(--line-3); }
.comp-ico  { font-size: 16px; }
.comp-name { font-size: 10px; font-weight: 600; color: var(--t1); }
.comp-desc { font-family: var(--mono); font-size: 9px; color: var(--t3); }

/* Level colors */
.plvl-0 { background: #111410; }
.plvl-0 .plvl-label { background: #0e110c; }
.plvl-0 .plvl-badge { background: #22c55e18; color: var(--green); border: 1px solid #22c55e44; }
.plvl-0 .plvl-name  { color: var(--green); }

.plvl-12 { background: #111510; }
.plvl-12 .plvl-label { background: #0e1208; }
.plvl-12 .plvl-badge { background: #4ade8018; color: #4ade80; border: 1px solid #4ade8044; }
.plvl-12 .plvl-name  { color: #4ade80; }

.plvl-35 { background: #151108; }
.plvl-35 .plvl-label { background: #120e06; }
.plvl-35 .plvl-badge { background: var(--gold-bg2); color: var(--gold); border: 1px solid var(--gold-dk); }
.plvl-35 .plvl-name  { color: var(--gold); }

.plvl-3 { background: #0f1118; }
.plvl-3 .plvl-label { background: #0c0f16; }
.plvl-3 .plvl-badge { background: var(--blue-bg); color: var(--blue); border: 1px solid #3b82f644; }
.plvl-3 .plvl-name  { color: var(--blue); }

.plvl-34 { background: #130f18; }
.plvl-34 .plvl-label { background: #100c16; }
.plvl-34 .plvl-badge { background: #a855f718; color: #a855f7; border: 1px solid #a855f744; }
.plvl-34 .plvl-name  { color: #a855f7; }

/* Inspector panel */
.arch-inspector {
  background: var(--bg-2); border: 1px solid var(--line);
  border-radius: var(--r2); padding: 16px; min-height: 320px;
  display: flex; flex-direction: column;
}
.inspector-placeholder {
  flex: 1; display: flex; flex-direction: column; align-items: center;
  justify-content: center; gap: 10px;
}
.inspector-placeholder p { font-size: 12px; color: var(--t3); }
.inspector-content h3 { font-size: 14px; font-weight: 700; color: var(--gold); margin-bottom: 8px; }
.inspector-content p  { font-size: 12px; color: var(--t2); line-height: 1.6; margin-bottom: 12px; }
.spec-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  font-family: var(--mono); font-size: 10px;
  padding: 3px 8px; border-radius: 4px; border: 1px solid var(--line-2);
  color: var(--t2);
}
.chip-g { border-color: #22c55e55; color: var(--green); background: var(--green-bg); }
.chip-a { border-color: var(--gold-dk); color: var(--gold); background: var(--gold-bg); }
.chip-r { border-color: #e8404055; color: var(--red); background: var(--red-bg); }
.chip-b { border-color: #3b82f655; color: var(--blue); background: var(--blue-bg); }

/* ─── TRENDS PAGE ────────────────────────────────────────── */
.trends-page { max-width: 1060px; }
.trends-topbar {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 14px; flex-wrap: wrap; gap: 10px;
}
.trends-topbar h2 { font-size: 20px; font-weight: 700; }
.trends-ctrls { display: flex; gap: 10px; align-items: center; }
.sel {
  background: var(--bg-2); border: 1px solid var(--line-2);
  color: var(--t1); padding: 6px 10px; border-radius: var(--r);
  font-family: var(--mono); font-size: 11px; cursor: pointer; outline: none;
  appearance: none;
}
.sel:focus { border-color: var(--gold); }
.range-tabs { display: flex; background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
.range-tab {
  padding: 5px 14px; background: none; border: none; color: var(--t3);
  font-family: var(--mono); font-size: 11px; font-weight: 600; cursor: pointer;
  transition: background 0.15s, color 0.15s;
  border-right: 1px solid var(--line);
}
.range-tab:last-child { border-right: none; }
.range-tab.active { background: var(--gold-bg2); color: var(--gold); }
.range-tab:hover:not(.active) { color: var(--t1); background: var(--bg-3); }

.charts-2x2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.chart-pane {
  background: var(--bg-2); border: 1px solid var(--line);
  border-radius: var(--r2); padding: 14px;
}
.chart-pane-head {
  display: flex; align-items: center; gap: 7px;
  font-size: 11px; font-weight: 600; color: var(--t2); margin-bottom: 12px;
}
.cpane-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }

.stat-ribbon {
  display: flex; gap: 0; margin-top: 10px;
  background: var(--bg-2); border: 1px solid var(--line);
  border-radius: var(--r2); overflow: hidden;
}
.sr-stat {
  flex: 1; padding: 10px 14px; border-right: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 2px;
}
.sr-stat:last-child { border-right: none; }
.sr-label { font-size: 9px; color: var(--t3); letter-spacing: 0.6px; text-transform: uppercase; font-family: var(--mono); }
.sr-val   { font-family: var(--mono); font-size: 16px; font-weight: 600; }

/* ─── ALARMS PAGE ────────────────────────────────────────── */
.alarms-page { max-width: 1200px; }
.alarms-topbar {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 12px; flex-wrap: wrap; gap: 10px;
}
.alarms-topbar h2 { font-size: 20px; font-weight: 700; }
.alarm-actions { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }

.btn-trig {
  padding: 6px 12px; border-radius: var(--r); font-family: var(--sans);
  font-size: 11px; font-weight: 600; cursor: pointer; border: 1px solid;
  transition: background 0.15s;
}
.trig-major { background: var(--red-bg); color: var(--red); border-color: #e8404055; }
.trig-major:hover { background: #e8404022; }
.trig-warn  { background: var(--amber-bg); color: var(--amber); border-color: #f59e0b55; }
.trig-warn:hover { background: #f59e0b22; }
.trig-ghost { background: transparent; color: var(--t2); border-color: var(--line-2); }
.trig-ghost:hover { color: var(--t1); border-color: var(--line-3); }
.trig-sep { width: 1px; height: 24px; background: var(--line); }

.alarm-kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-bottom: 12px; }
.akpi {
  border-radius: var(--r2); padding: 12px 16px; text-align: center;
  border: 1px solid; display: flex; flex-direction: column; align-items: center;
}
.akpi-major { background: var(--red-bg);   border-color: #e8404044; }
.akpi-warn  { background: var(--amber-bg); border-color: #f59e0b44; }
.akpi-minor { background: var(--blue-bg);  border-color: #3b82f644; }
.akpi-ack   { background: var(--bg-2);     border-color: var(--line); }

.akpi-n {
  font-family: var(--mono); font-size: 30px; font-weight: 700; line-height: 1;
}
.akpi-major .akpi-n { color: var(--red); }
.akpi-warn  .akpi-n { color: var(--amber); }
.akpi-minor .akpi-n { color: var(--blue); }
.akpi-ack   .akpi-n { color: var(--t3); }
.akpi-l {
  font-size: 9px; font-weight: 700; letter-spacing: 0.8px;
  color: var(--t3); margin-top: 4px;
}

.alarm-tbl-wrap {
  background: var(--bg-2); border: 1px solid var(--line);
  border-radius: var(--r2); overflow: hidden;
}
.alarm-tbl { width: 100%; border-collapse: collapse; font-size: 11px; }
.alarm-tbl th {
  background: var(--bg-3); color: var(--t3);
  padding: 8px 12px; text-align: left; font-size: 9px;
  letter-spacing: 0.6px; font-weight: 700; text-transform: uppercase;
  border-bottom: 1px solid var(--line);
}
.alarm-tbl td { padding: 9px 12px; border-bottom: 1px solid #ffffff05; vertical-align: middle; }
.alarm-tbl tr:last-child td { border-bottom: none; }
.alarm-tbl tr:hover td { background: var(--bg-3); }
.alarm-tbl tr.row-acked td { opacity: 0.45; }
.alarm-tbl tr.row-new td  { animation: row-flash 0.5s ease; }
@keyframes row-flash { from { background: #e8404018; } to {} }

.sev {
  display: inline-block; font-family: var(--mono); font-size: 9px; font-weight: 700;
  padding: 2px 6px; border-radius: 3px; letter-spacing: 0.4px;
}
.sev-major { background: var(--red-bg);   color: var(--red);   border: 1px solid #e8404055; }
.sev-warn  { background: var(--amber-bg); color: var(--amber); border: 1px solid #f59e0b55; }
.sev-minor { background: var(--blue-bg);  color: var(--blue);  border: 1px solid #3b82f655; }

.alarm-active { color: var(--red); font-weight: 600; font-family: var(--mono); font-size: 10px; }
.alarm-ack    { color: var(--t3);  font-family: var(--mono); font-size: 10px; }

.btn-ack {
  padding: 4px 10px; background: var(--bg-3); border: 1px solid var(--line-2);
  border-radius: var(--r); color: var(--t2); font-size: 10px; font-family: var(--sans);
  cursor: pointer; transition: border-color 0.15s, color 0.15s;
}
.btn-ack:hover:not(:disabled) { border-color: var(--green); color: var(--green); }
.btn-ack:disabled { opacity: 0.3; cursor: default; }

.alarm-empty {
  padding: 56px 20px; text-align: center; display: none;
  flex-direction: column; align-items: center;
}
.ae-icon { margin-bottom: 14px; }
.ae-title { font-size: 15px; font-weight: 600; color: var(--green); margin-bottom: 5px; }
.ae-sub   { font-size: 11px; color: var(--t3); }