:root {
  --bg: #f5f6f8; --panel: #fff; --text: #202126; --muted: #727680;
  --line: #e5e7ec; --accent: #ef2b2d; --ok: #1c9b63; --warn: #ed971f;
  --bad: #d84343; --blue: #3478f6; --shadow: 0 8px 28px rgba(23, 31, 45, .07);
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.45 Inter, "Segoe UI", Arial, sans-serif; }
a { color: inherit; text-decoration: none; }
.topbar { height: 68px; background: #fff; border-bottom: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; padding: 0 max(24px, calc((100vw - 1440px)/2)); position: sticky; top: 0; z-index: 10; }
.brand { display: flex; align-items: center; gap: 11px; font-weight: 750; font-size: 18px; }
.brand-mark { display: grid; place-items: center; width: 34px; height: 34px; color: white; background: var(--accent); border-radius: 11px; font-size: 24px; }
nav { display: flex; gap: 8px; }
nav a { padding: 9px 13px; border-radius: 9px; color: #4f535c; }
nav a:hover { background: #f2f3f6; color: #111; }
.container { width: min(1440px, calc(100% - 40px)); margin: 30px auto 60px; }
h1 { margin: 0 0 5px; font-size: clamp(25px, 3vw, 36px); line-height: 1.1; }
h2 { margin: 0 0 14px; font-size: 20px; }
.muted { color: var(--muted); }
.page-head { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 24px; }
.page-head p { margin: 6px 0 0; }
.head-actions { display: flex; align-items: center; justify-content: flex-end; flex-wrap: wrap; gap: 8px; }
.head-actions form { margin: 0; }
.report-form { display: flex; align-items: center; gap: 6px; }
.report-form select { width: auto; min-width: 155px; margin: 0; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 24px; box-shadow: var(--shadow); }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 40px; padding: 9px 16px; border: 1px solid #d9dce3; border-radius: 10px; background: #fff; color: #25272b; cursor: pointer; font: inherit; font-weight: 650; }
.button:hover { border-color: #aeb4bf; }
.button.primary { background: #24262b; border-color: #24262b; color: white; }
.button.ghost { margin-left: 7px; }
.button.active { border-color: var(--blue); color: var(--blue); }
.button:disabled { opacity: .45; cursor: not-allowed; }
.flash { margin: 0 0 18px; padding: 13px 16px; border-radius: 10px; background: #eaf6ef; color: #126b43; border: 1px solid #bee4ce; }
.flash.error { background: #fff0f0; color: #a82929; border-color: #f1c2c2; }
.summary { display: grid; grid-template-columns: repeat(4, 1fr); gap: 15px; margin-bottom: 22px; }
.summary-card { background: white; border: 1px solid var(--line); border-radius: 14px; padding: 18px; display: flex; flex-direction: column; box-shadow: var(--shadow); }
.summary-card strong { font-size: 31px; line-height: 1; margin-bottom: 8px; }
.summary-card span { color: var(--muted); }
.summary-card.ok strong { color: var(--ok); } .summary-card.warn strong { color: var(--warn); } .summary-card.bad strong { color: var(--bad); }
.sensor-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 17px; }
.sensor-card { position: relative; background: white; border: 1px solid var(--line); border-top: 4px solid #979ba5; border-radius: 15px; padding: 20px; box-shadow: var(--shadow); }
.sensor-card.status-normal { border-top-color: var(--ok); } .sensor-card.status-cold { border-top-color: var(--blue); } .sensor-card.status-hot { border-top-color: var(--bad); } .sensor-card.status-offline,.sensor-card.status-stale,.sensor-card.status-invalid { border-top-color: var(--warn); }
.sensor-top { display: flex; align-items: center; gap: 7px; color: var(--muted); font-size: 13px; margin-bottom: 14px; }
.status-dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; background: #979ba5; }
.status-normal .status-dot,.status-dot.status-normal { background: var(--ok); } .status-cold .status-dot,.status-dot.status-cold { background: var(--blue); } .status-hot .status-dot,.status-dot.status-hot { background: var(--bad); } .status-offline .status-dot,.status-stale .status-dot,.status-invalid .status-dot,.status-dot.status-offline,.status-dot.status-stale,.status-dot.status-invalid { background: var(--warn); }
.store-name { margin-bottom: 3px; font-size: 23px; } .device-name { margin: 0; color: var(--muted); }
.hub-name { margin: 2px 0 0; color: #969ba5; font-size: 11px; }
.sensor-stats { margin: 6px 0 0; color: #666c76; font-size: 12px; }
.last-seen { display: flex; flex-direction: column; gap: 1px; }
.last-seen-age { color: #969ba5; font-size: 10px; }
.metrics { display: flex; gap: 32px; margin: 22px 0; }
.metrics div { display: flex; align-items: baseline; gap: 5px; }
.metrics strong { font-size: 42px; line-height: 1; letter-spacing: -1px; }
.metrics span { color: var(--muted); font-size: 16px; }
.metrics.large strong { font-size: 55px; }
.sensor-foot { display: flex; justify-content: space-between; gap: 12px; border-top: 1px solid var(--line); padding-top: 13px; color: var(--muted); font-size: 12px; }
.card-link { display: inline-block; margin-top: 15px; color: var(--blue); font-weight: 650; }
.dashboard-tools { padding: 14px; margin-bottom: 16px; }
.store-tabs { display: flex; gap: 7px; overflow-x: auto; padding-bottom: 10px; scrollbar-width: thin; }
.store-tab,.view-switch button { border: 1px solid var(--line); background: #fff; border-radius: 9px; padding: 8px 11px; color: #555b65; white-space: nowrap; cursor: pointer; font: inherit; }
.store-tab span { padding-left: 5px; color: #9297a1; }
.store-tab.active,.view-switch button.active { background: #24262b; border-color: #24262b; color: #fff; }
.store-tab.active span { color: #cdd0d5; }
.tool-row { display: flex; align-items: end; justify-content: space-between; gap: 16px; padding-top: 3px; }
.list-controls { display: flex; align-items: end; gap: 10px; width: min(720px, 100%); }
.sensor-search { margin: 0; width: min(420px, 100%); color: var(--muted); font-size: 12px; }
.sensor-search input { margin-top: 4px; }
.sensor-sort { margin: 0; min-width: 245px; color: var(--muted); font-size: 12px; }
.view-switch { display: flex; gap: 5px; }
.sensor-list-head { display: none; }
.data-problem { margin: 10px 0 0; padding: 7px 9px; border-radius: 7px; background: #fff3dd; color: #875610; font-size: 12px; }

.sensor-grid.view-compact { grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 10px; }
.view-compact .sensor-card { padding: 14px; }
.view-compact .sensor-top { margin-bottom: 8px; }
.view-compact .store-name { font-size: 17px; }
.view-compact .metrics { margin: 13px 0; }
.view-compact .metrics strong { font-size: 31px; }
.view-compact .sensor-foot { display: none; }
.view-compact .sensor-stats { font-size: 11px; }
.view-compact .card-link { margin-top: 10px; font-size: 13px; }

body[data-dashboard-view="list"] .sensor-list-head { display: grid; grid-template-columns: 125px minmax(240px,2fr) 130px 115px 170px 120px; gap: 12px; padding: 0 15px 8px; color: var(--muted); font-size: 11px; text-transform: uppercase; }
.sensor-grid.view-list { display: block; }
.view-list .sensor-card { display: grid; grid-template-columns: 125px minmax(240px,2fr) 130px 115px 170px 120px; gap: 12px; align-items: center; min-height: 58px; margin-bottom: 6px; padding: 9px 14px; border-top-width: 1px; border-left: 4px solid #979ba5; border-radius: 10px; box-shadow: none; }
.view-list .sensor-card.status-normal { border-left-color: var(--ok); }.view-list .sensor-card.status-cold { border-left-color: var(--blue); }.view-list .sensor-card.status-hot { border-left-color: var(--bad); }.view-list .sensor-card.status-offline,.view-list .sensor-card.status-stale,.view-list .sensor-card.status-invalid { border-left-color: var(--warn); }
.view-list .sensor-top { margin: 0; }
.view-list .sensor-identity { min-width: 0; }
.view-list .store-name { margin: 0; overflow: hidden; font-size: 18px; line-height: 1.15; text-overflow: ellipsis; white-space: nowrap; }
.view-list .device-name { overflow: hidden; font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.view-list .hub-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.view-list .metrics { display: contents; }
.view-list .metrics div { gap: 3px; }
.view-list .metrics strong { font-size: 22px; letter-spacing: 0; }
.view-list .metrics span { font-size: 12px; }
.view-list .sensor-foot { display: contents; }
.view-list .sensor-foot span:first-child { display: none; }
.view-list .last-seen { border: 0; padding: 0; font-size: 12px; }
.view-list .card-link { margin: 0; font-size: 12px; text-align: right; }
.view-list .data-problem { grid-column: 2 / -1; margin: 0; }
.settings-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; align-items: start; }
form label { display: block; font-weight: 650; margin: 13px 0; }
input,select { display: block; width: 100%; height: 42px; margin-top: 6px; border: 1px solid #d9dce3; border-radius: 9px; padding: 8px 11px; background: #fff; font: inherit; }
input:focus,select:focus { outline: 3px solid rgba(52,120,246,.14); border-color: var(--blue); }
.inline-form { display: inline-block; margin: 5px 0; }
.connection { padding: 10px 12px; background: #fff3dd; color: #875610; border-radius: 8px; }
.connection.connected { background: #eaf6ef; color: #126b43; }
.code-block { display: block; padding: 12px; overflow-x: auto; background: #f3f4f6; border: 1px solid var(--line); border-radius: 9px; }
details summary { cursor: pointer; }
.device-list { display: grid; gap: 13px; }
.device-row { padding: 0; overflow: hidden; }
.device-row summary { display: grid; grid-template-columns: 14px 1.4fr 1.4fr 1fr auto; gap: 12px; align-items: center; padding: 18px 20px; }
.device-row[open] summary { border-bottom: 1px solid var(--line); }
.device-row summary::marker { display: none; }
.mono { font: 12px Consolas, monospace; color: var(--muted); }
.tag { padding: 5px 8px; border-radius: 99px; background: #eaf6ef; color: #126b43; font-size: 12px; }
.muted-tag { background: #f0f1f3; color: var(--muted); }
.device-form { padding: 20px; }
.form-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 5px 14px; }
.checkbox { display: flex; align-items: center; gap: 9px; }
.checkbox input { width: 18px; height: 18px; margin: 0; }
.device-meta { display: flex; flex-wrap: wrap; gap: 15px; margin: 14px 0; color: var(--muted); font-size: 12px; }
.chart-panel { margin-bottom: 18px; }
.chart { min-height: 330px; width: 100%; }
.chart svg { width: 100%; height: auto; overflow: visible; }
.temp-line { fill: none; stroke: var(--blue); stroke-width: 3; stroke-linejoin: round; stroke-linecap: round; }
.grid-line { stroke: #e6e8ed; stroke-width: 1; } .limit-line { stroke: var(--bad); stroke-width: 1; stroke-dasharray: 7 6; }
.axis-label { fill: var(--muted); font: 12px sans-serif; }
.periods { display: flex; gap: 7px; }
.back { display: inline-block; margin-bottom: 10px; color: var(--blue); }
.table-wrap { overflow-x: auto; } table { width: 100%; border-collapse: collapse; } th, td { padding: 11px 10px; border-bottom: 1px solid var(--line); text-align: left; white-space: nowrap; } th { color: var(--muted); font-size: 12px; text-transform: uppercase; }
.empty { grid-column: 1/-1; text-align: center; padding: 50px 25px; }
.login-card { width: min(430px, 100%); margin: 80px auto; }

@media (max-width: 900px) {
  .summary { grid-template-columns: repeat(2, 1fr); }
  .settings-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: repeat(2, 1fr); }
  .device-row summary { grid-template-columns: 14px 1fr auto; }
  .device-row summary > span:nth-of-type(2), .device-row .mono { display: none; }
  body[data-dashboard-view="list"] .sensor-list-head { display: none; }
  .sensor-grid.view-list { display: grid; grid-template-columns: 1fr; }
  .view-list .sensor-card { display: grid; grid-template-columns: 1fr auto; }
  .view-list .sensor-top,.view-list .sensor-foot,.view-list .card-link,.view-list .data-problem { grid-column: 1 / -1; }
  .view-list .metrics { display: flex; margin: 8px 0; }
  .view-list .sensor-foot { display: flex; }
}
@media (max-width: 650px) {
  .topbar { height: auto; min-height: 64px; padding: 12px 16px; align-items: flex-start; }
  .brand span:last-child { display: none; }
  nav { flex-wrap: wrap; justify-content: flex-end; gap: 2px; }
  nav a { padding: 7px 8px; font-size: 13px; }
  .container { width: min(100% - 24px, 1440px); margin-top: 20px; }
  .page-head { align-items: flex-start; flex-direction: column; }
  .head-actions { width: 100%; justify-content: flex-start; }
  .report-form { width: 100%; flex-wrap: wrap; }
  .summary { grid-template-columns: repeat(2, 1fr); gap: 9px; }
  .summary-card { padding: 14px; }
  .sensor-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .device-row summary { grid-template-columns: 14px 1fr; }
  .device-row summary .tag { display: none; }
  .sensor-foot { flex-direction: column; }
  .periods { flex-wrap: wrap; }
  .tool-row { align-items: stretch; flex-direction: column; }
  .list-controls { align-items: stretch; flex-direction: column; }
  .sensor-sort { min-width: 0; width: 100%; }
  .view-switch { display: grid; grid-template-columns: repeat(3, 1fr); }
}