:root {
  --bg: #f4f6f9;
  --panel: #ffffff;
  --panel-2: #f8f9fb;
  --text: #182033;
  --muted: #64708a;
  --line: #e1e5ec;
  --accent: #2563eb;
  --accent-soft: #e8efff;
  --on-accent: #ffffff;
  --ok: #138a4b;
  --ok-soft: #e3f5ea;
  --warn: #b26a00;
  --warn-soft: #fff3dc;
  --bad: #c62828;
  --bad-soft: #fdecec;
  --canvas: #ffffff;
  --grid: #eceff4;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .08);
  --radius: 12px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e131b; --panel: #161c26; --panel-2: #1b2230; --text: #e5e9f0; --muted: #94a0b6; --line: #273042;
    --accent: #5b8fff; --accent-soft: #1d2a47; --on-accent: #0b1222; --ok: #4ad295; --ok-soft: #13301f;
    --warn: #f3b444; --warn-soft: #33270f; --bad: #ff7272; --bad-soft: #3a1a1c; --canvas: #121822; --grid: #222b3a;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4); color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0e131b; --panel: #161c26; --panel-2: #1b2230; --text: #e5e9f0; --muted: #94a0b6; --line: #273042;
  --accent: #5b8fff; --accent-soft: #1d2a47; --on-accent: #0b1222; --ok: #4ad295; --ok-soft: #13301f;
  --warn: #f3b444; --warn-soft: #33270f; --bad: #ff7272; --bad-soft: #3a1a1c; --canvas: #121822; --grid: #222b3a;
  --shadow: 0 1px 2px rgba(0, 0, 0, .4); color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--text); font: 14px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; }
h1 { font-size: 20px; margin: 0; letter-spacing: -.01em; }
h2 { font-size: 15px; margin: 0; }
h3 { font-size: 12px; margin: 0 0 8px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); font-weight: 600; }
.hidden { display: none !important; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.num { font-variant-numeric: tabular-nums; }

/* top bar */
.topbar { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: 18px; padding: 0 16px; height: 54px; background: var(--panel); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 9px; color: var(--text); font-weight: 700; font-size: 15px; white-space: nowrap; }
.logo { width: 24px; height: 24px; border-radius: 7px; background: var(--accent); position: relative; }
.logo::after { content: ""; position: absolute; inset: 6px 5px; border-top: 2px solid #fff; border-bottom: 2px solid #fff; }
nav { display: flex; gap: 4px; }
nav a { color: var(--muted); padding: 7px 11px; border-radius: 8px; font-weight: 500; display: flex; align-items: center; gap: 6px; }
nav a.active { color: var(--text); background: var(--panel-2); }
.spacer { flex: 1; }
.badge { background: var(--bad); color: #fff; border-radius: 99px; font-size: 11px; padding: 0 6px; font-weight: 700; line-height: 18px; }
.userbtn { border: 1px solid var(--line); background: var(--panel); color: var(--text); width: 34px; height: 34px; border-radius: 50%; font-weight: 700; cursor: pointer; }
.menu { position: absolute; right: 12px; top: 50px; background: var(--panel); border: 1px solid var(--line); border-radius: 10px; box-shadow: var(--shadow); min-width: 210px; padding: 6px; }
.menu-head { padding: 8px 10px; border-bottom: 1px solid var(--line); margin-bottom: 4px; }
.menu button { display: block; width: 100%; text-align: left; border: 0; background: none; color: var(--text); padding: 8px 10px; border-radius: 7px; font: inherit; cursor: pointer; }
.menu button:hover { background: var(--panel-2); }
@media (max-width: 640px) {
  .topbar { gap: 8px; padding: 0 10px; }
  .brand span:not(.logo) { display: none; }
  .brand { font-size: 0; }
  nav a { padding: 7px 8px; }
}

/* layout */
main { max-width: 1280px; margin: 0 auto; padding: 18px 16px 48px; }
.pagehead { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-bottom: 16px; }
.pagehead .grow { flex: 1; min-width: 0; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px; }
.card + .card, .stack > * + * { margin-top: 16px; }
.grid2 { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 16px; align-items: start; }
@media (max-width: 980px) { .grid2 { grid-template-columns: minmax(0, 1fr); } }

/* controls */
.btn { font: inherit; font-weight: 500; border: 1px solid var(--line); background: var(--panel); color: var(--text); padding: 7px 13px; border-radius: 8px; cursor: pointer; display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
.btn:hover { border-color: var(--muted); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); font-weight: 600; }
.btn.danger { color: var(--bad); }
.btn.small { padding: 4px 9px; font-size: 12px; }
.btn:disabled { opacity: .5; cursor: default; }
.btn.icon { padding: 7px 9px; }
input, select { font: inherit; color: var(--text); background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 7px 10px; min-width: 0; }
input:focus, select:focus, .btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
label.field { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--muted); font-weight: 500; }
label.field > input, label.field > select { font-size: 14px; }
.row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.seg { display: inline-flex; background: var(--panel-2); border: 1px solid var(--line); border-radius: 9px; padding: 3px; gap: 2px; }
.seg button, .seg a { border: 0; background: none; color: var(--muted); font: inherit; font-weight: 600; padding: 6px 14px; border-radius: 7px; cursor: pointer; display: flex; align-items: center; gap: 6px; }
.seg .on { background: var(--panel); color: var(--text); box-shadow: var(--shadow); }
.pill { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 600; padding: 2px 9px; border-radius: 99px; background: var(--panel-2); color: var(--muted); white-space: nowrap; }
.pill.ok { background: var(--ok-soft); color: var(--ok); }
.pill.warn { background: var(--warn-soft); color: var(--warn); }
.pill.bad { background: var(--bad-soft); color: var(--bad); }
.dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; display: inline-block; }

/* login */
.login { max-width: 380px; margin: 9vh auto 0; }
.login .card { padding: 28px; }
.login h1 { margin: 14px 0 4px; }
.login form { display: flex; flex-direction: column; gap: 14px; margin-top: 22px; }
.login .logo { width: 40px; height: 40px; border-radius: 11px; }
.login .logo::after { inset: 10px 9px; border-width: 3px; }
.error { color: var(--bad); font-size: 13px; min-height: 18px; }

/* dashboard */
.sites { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 380px), 1fr)); gap: 16px; }
.site { cursor: pointer; transition: border-color .15s; }
.site:hover { border-color: var(--accent); }
.site h2 { font-size: 17px; }
.walls3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 14px 0; }
.wallbox { border: 1px solid var(--line); border-radius: 10px; padding: 10px; color: var(--text); background: var(--panel-2); display: block; }
.wallbox:hover { border-color: var(--accent); }
.wallbox .v { font-size: 20px; font-weight: 700; font-variant-numeric: tabular-nums; }
.wallbox .k { font-size: 12px; color: var(--muted); text-transform: capitalize; font-weight: 600; }
.wallbox.warn { background: var(--warn-soft); border-color: transparent; }
.wallbox.bad { background: var(--bad-soft); border-color: transparent; }
.wallbox.warn .v { color: var(--warn); }
.wallbox.bad .v { color: var(--bad); }
.sensorlist { display: grid; gap: 4px; margin-top: 8px; }
.sensorrow { display: grid; grid-template-columns: 16px 1fr auto; gap: 8px; align-items: center; font-size: 13px; }
.sensorrow .dot.ok { color: var(--ok); } .sensorrow .dot.warn { color: var(--warn); } .sensorrow .dot.bad { color: var(--bad); } .sensorrow .dot.off { color: var(--line); }

/* wall view */
.toolbar { display: flex; flex-wrap: wrap; gap: 10px 14px; align-items: flex-end; }
.bigdate { font-size: 22px; font-weight: 700; letter-spacing: -.01em; font-variant-numeric: tabular-nums; }
.mapwrap { position: relative; margin-top: 14px; }
canvas { display: block; width: 100%; }
#map { cursor: pointer; touch-action: manipulation; }
.tip { position: absolute; pointer-events: none; background: rgba(15, 20, 30, .92); color: #fff; font-size: 12px; padding: 6px 9px; border-radius: 7px; white-space: nowrap; transform: translate(-50%, -110%); z-index: 3; }
.legend { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; margin-top: 12px; font-size: 12px; color: var(--muted); }
.scale { display: flex; align-items: center; gap: 6px; }
.scale .bar { width: 200px; height: 10px; border-radius: 5px; }
.key { display: inline-flex; align-items: center; gap: 6px; }
.key i { width: 14px; height: 14px; border-radius: 3px; display: inline-block; }
.timeline { margin-top: 18px; }
.sliderrow { display: flex; align-items: center; gap: 10px; }
.sliderrow input[type=range] { flex: 1; accent-color: var(--accent); padding: 0; border: 0; background: none; height: 28px; }
.ticks { display: flex; justify-content: space-between; font-size: 11px; color: var(--muted); margin: -2px 44px 0 50px; }
.chartwrap { position: relative; margin-top: 8px; }
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 10px; }
.kpi { background: var(--panel-2); border-radius: 10px; padding: 10px 12px; }
.kpi .v { font-size: 20px; font-weight: 700; font-variant-numeric: tabular-nums; }
.kpi .k { font-size: 12px; color: var(--muted); }
.kpi.warn .v { color: var(--warn); } .kpi.bad .v { color: var(--bad); }
.note { background: var(--warn-soft); color: var(--warn); border-radius: 9px; padding: 8px 12px; font-size: 13px; }
.note.info { background: var(--accent-soft); color: var(--accent); }
.side h2 { margin-bottom: 4px; }
.empty { text-align: center; padding: 40px 16px; color: var(--muted); }

/* tables / lists */
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { font-size: 12px; color: var(--muted); font-weight: 600; }
tr:last-child td { border-bottom: 0; }
.tablewrap { overflow-x: auto; }
.alertgroup { border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.alertgroup + .alertgroup { margin-top: 10px; }
.alerthead { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; padding: 12px 14px; background: var(--panel); cursor: pointer; }
.alerthead .title { font-weight: 600; flex: 1; min-width: 200px; }
.alertgroup.critical { border-left: 4px solid var(--bad); }
.alertgroup.warning { border-left: 4px solid var(--warn); }
.alertgroup.resolved { border-left: 4px solid var(--line); }
.alertbody { border-top: 1px solid var(--line); background: var(--panel-2); padding: 4px 6px; }
.alertline { display: grid; grid-template-columns: 1fr auto; gap: 8px; align-items: center; padding: 8px; border-radius: 7px; }
.alertline + .alertline { border-top: 1px solid var(--line); }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 16px; }
.tabs button { border: 0; background: none; color: var(--muted); font: inherit; font-weight: 600; padding: 9px 12px; cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tabs button.on { color: var(--text); border-color: var(--accent); }
.formgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 14px; }
.formgrid .hint { font-size: 11px; color: var(--muted); font-weight: 400; }
fieldset { border: 1px solid var(--line); border-radius: 10px; padding: 14px; margin: 0 0 14px; }
legend { font-weight: 600; padding: 0 6px; }
.token { font-family: ui-monospace, monospace; background: var(--panel-2); padding: 10px 12px; border-radius: 8px; word-break: break-all; user-select: all; }

/* dialog + toast */
dialog { border: 1px solid var(--line); border-radius: 14px; padding: 0; background: var(--panel); color: var(--text); width: min(440px, calc(100vw - 32px)); box-shadow: 0 20px 50px rgba(0, 0, 0, .25); }
dialog::backdrop { background: rgba(10, 15, 25, .45); }
dialog form { padding: 20px; display: flex; flex-direction: column; gap: 14px; }
dialog .actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 4px; }
.toast { position: fixed; left: 50%; bottom: 22px; transform: translateX(-50%); background: #1b2333; color: #fff; padding: 10px 16px; border-radius: 10px; box-shadow: var(--shadow); z-index: 50; max-width: calc(100vw - 32px); }
.toast.err { background: var(--bad); }

/* alarm levels: 1 green, 2 orange, 3 red */
:root { --l1: #2e7d32; --l1-soft: #e3f3e4; --l2: #b26a00; --l2-soft: #fff1d6; --l3: #c62828; --l3-soft: #fde8e8; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) { --l1: #5fd07a; --l1-soft: #15301c; --l2: #f3b444; --l2-soft: #33270f; --l3: #ff7272; --l3-soft: #3a1a1c; } }
:root[data-theme="dark"] { --l1: #5fd07a; --l1-soft: #15301c; --l2: #f3b444; --l2-soft: #33270f; --l3: #ff7272; --l3-soft: #3a1a1c; }
.pill.l0 { background: var(--panel-2); color: var(--muted); }
.pill.l1 { background: var(--l1-soft); color: var(--l1); }
.pill.l2 { background: var(--l2-soft); color: var(--l2); }
.pill.l3 { background: var(--l3-soft); color: var(--l3); }
.kpi.l1 .v { color: var(--l1); } .kpi.l2 .v { color: var(--l2); } .kpi.l3 .v { color: var(--l3); }
.kpi.l1 { background: var(--l1-soft); } .kpi.l2 { background: var(--l2-soft); } .kpi.l3 { background: var(--l3-soft); }
.wallbox.w1 { background: var(--l1-soft); border-color: transparent; } .wallbox.w1 .v { color: var(--l1); }
.wallbox.w2 { background: var(--l2-soft); border-color: transparent; } .wallbox.w2 .v { color: var(--l2); }
.wallbox.w3 { background: var(--l3-soft); border-color: transparent; } .wallbox.w3 .v { color: var(--l3); }
.alertgroup.lv1 { border-left: 4px solid var(--l1); }
.alertgroup.lv2 { border-left: 4px solid var(--l2); }
.alertgroup.lv3 { border-left: 4px solid var(--l3); }
.legendrow { display: flex; justify-content: space-between; gap: 6px; margin-top: 6px; font-size: 12px; color: var(--muted); flex-wrap: wrap; }
.scale .bar { display: block; height: 12px; border-radius: 6px; }
tr.clickrow { cursor: pointer; }
tr.clickrow:hover td { background: var(--panel-2); }
.kpis .kpi[style*="grid-column"] .v { font-size: 24px; }