:root {
  --ink: #edf6f1;
  --muted: #8da59a;
  --bg: #08110f;
  --surface: #101d19;
  --surface-2: #152720;
  --surface-3: #1b3028;
  --line: #29463b;
  --moss: #66d69a;
  --moss-dark: #25835a;
  --amber: #eebc62;
  --red: #f4786f;
  --blue: #73b8e8;
  --shadow: 0 22px 60px rgba(0, 0, 0, .28);
  --radius: 18px;
  color: var(--ink);
  background: var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { min-width: 320px; background: var(--bg); scroll-behavior: smooth; }
body { margin: 0; min-height: 100vh; background: radial-gradient(circle at 83% -15%, rgba(68, 164, 116, .18), transparent 35rem), var(--bg); }
button, input, select { font: inherit; }
button { color: inherit; }
button, select { cursor: pointer; }
a { color: inherit; }
[hidden] { display: none !important; }

.app-shell { min-height: 100vh; display: grid; grid-template-columns: 252px minmax(0, 1fr); }
.sidebar { position: sticky; top: 0; z-index: 20; height: 100vh; padding: 26px 16px 20px; display: flex; flex-direction: column; gap: 28px; border-right: 1px solid var(--line); background: rgba(8, 17, 15, .95); backdrop-filter: blur(18px); }
.brand-lockup { display: flex; align-items: center; gap: 12px; }
.brand-mark { width: 43px; height: 43px; display: grid; place-items: center; flex: 0 0 auto; border-radius: 14px; color: #061b12; background: linear-gradient(145deg, #85e9b4, #47be83); font-weight: 900; font-size: 1.08rem; box-shadow: 0 10px 30px rgba(76, 198, 137, .25); }
.brand-lockup b, .brand-lockup small { display: block; }
.brand-lockup b { letter-spacing: -.02em; }
.brand-lockup small { margin-top: 2px; color: var(--muted); font-size: .7rem; letter-spacing: .08em; text-transform: uppercase; }
.sidebar nav { display: grid; gap: 5px; overflow-y: auto; }
.nav-item { min-height: 43px; padding: 8px 11px; display: grid; grid-template-columns: 25px 1fr; align-items: center; gap: 8px; border: 1px solid transparent; border-radius: 11px; color: var(--muted); background: transparent; text-align: left; font-size: .84rem; transition: .16s ease; }
.nav-item span { color: #557066; font-size: .62rem; letter-spacing: .1em; }
.nav-item:hover { color: var(--ink); border-color: rgba(102, 214, 154, .16); background: rgba(102, 214, 154, .05); }
.nav-item.active { color: var(--ink); border-color: rgba(102, 214, 154, .25); background: linear-gradient(90deg, rgba(57, 151, 103, .25), rgba(57, 151, 103, .06)); }
.nav-item.active span { color: var(--moss); }
.sidebar-foot { margin-top: auto; padding: 12px; display: flex; gap: 9px; align-items: center; border: 1px solid rgba(102, 214, 154, .18); border-radius: 12px; color: var(--muted); font-size: .68rem; line-height: 1.45; }
.pulse-dot { width: 8px; height: 8px; flex: 0 0 auto; border-radius: 50%; background: var(--moss); box-shadow: 0 0 0 5px rgba(102, 214, 154, .08); }

.workspace { min-width: 0; }
.topbar { position: sticky; top: 0; z-index: 15; min-height: 82px; padding: 0 30px; display: flex; align-items: center; gap: 20px; border-bottom: 1px solid rgba(41, 70, 59, .8); background: rgba(8, 17, 15, .83); backdrop-filter: blur(18px); }
.device-picker { display: flex; align-items: center; gap: 12px; }
.device-picker label { color: var(--muted); font-size: .7rem; font-weight: 750; letter-spacing: .07em; text-transform: uppercase; }
.device-picker select { min-width: 220px; }
.top-state { margin-left: auto; display: flex; gap: 10px; align-items: center; color: var(--muted); font-size: .7rem; }
.content { max-width: 1540px; margin: 0 auto; padding: 34px 34px 70px; }
.page { display: none; animation: reveal .18s ease; }
.page.active { display: block; }
@keyframes reveal { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }
.page-heading { margin-bottom: 22px; display: flex; align-items: flex-end; justify-content: space-between; gap: 18px; }
.page-heading h1 { margin: 4px 0 0; font-size: clamp(1.7rem, 3vw, 2.55rem); letter-spacing: -.055em; font-weight: 730; }
.kicker { margin: 0; color: var(--moss); font-size: .65rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }

.panel { padding: 20px; border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(145deg, rgba(21, 39, 32, .97), rgba(13, 27, 22, .97)); box-shadow: var(--shadow); }
.panel + .panel { margin-top: 16px; }
.panel > header { margin-bottom: 18px; display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.panel h2 { margin: 0; font-size: 1rem; letter-spacing: -.02em; }
.panel header span, .panel p { color: var(--muted); font-size: .72rem; line-height: 1.55; }
.split-grid { margin-bottom: 16px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.split-grid > .panel + .panel { margin-top: 0; }
.metric-grid { margin-bottom: 16px; display: grid; grid-template-columns: repeat(5, minmax(135px, 1fr)); gap: 12px; }
.metric-card { min-height: 132px; padding: 17px; display: flex; flex-direction: column; justify-content: space-between; border: 1px solid var(--line); border-radius: 15px; background: linear-gradient(160deg, rgba(27, 54, 44, .78), rgba(11, 24, 20, .9)); }
.metric-card .metric-label { color: var(--muted); font-size: .65rem; font-weight: 750; letter-spacing: .08em; text-transform: uppercase; }
.metric-card strong { margin-top: 11px; display: block; font-size: 1.75rem; letter-spacing: -.055em; }
.metric-card small { margin-top: 7px; color: var(--muted); font-size: .64rem; }
.metric-card.invalid { border-color: rgba(238, 188, 98, .3); }
.metric-card.invalid strong { color: var(--amber); font-size: 1rem; }
.fault-banner { margin-bottom: 16px; padding: 13px 15px; display: flex; align-items: center; gap: 12px; border: 1px solid rgba(102, 214, 154, .3); border-radius: 12px; background: rgba(102, 214, 154, .06); }
.fault-banner b { color: var(--moss); font-size: .75rem; }
.fault-banner span { color: var(--muted); font-size: .72rem; }
.fault-banner.danger { border-color: rgba(244, 120, 111, .38); background: rgba(244, 120, 111, .08); }
.fault-banner.danger b { color: var(--red); }

.relay-summary, .control-list { display: grid; gap: 9px; }
.relay-row { padding: 11px 12px; display: flex; align-items: center; gap: 10px; border: 1px solid rgba(41, 70, 59, .75); border-radius: 11px; background: rgba(5, 15, 12, .3); }
.relay-light { width: 9px; height: 9px; flex: 0 0 auto; border-radius: 50%; background: #596d64; }
.relay-light.on { background: var(--moss); box-shadow: 0 0 14px rgba(102, 214, 154, .5); }
.relay-copy { flex: 1; min-width: 0; }
.relay-copy b { display: block; font-size: .76rem; }
.relay-copy span { color: var(--muted); font-size: .65rem; }
.relay-select { width: auto; min-width: 130px; }
.detail-list { margin: 0; display: grid; grid-template-columns: minmax(120px, .8fr) minmax(0, 1.2fr); gap: 10px 18px; }
.detail-list dt { color: var(--muted); font-size: .7rem; }
.detail-list dd { margin: 0; overflow-wrap: anywhere; text-align: right; font-size: .73rem; font-weight: 700; }

.button { width: fit-content; min-height: 40px; padding: 8px 14px; border: 1px solid transparent; border-radius: 10px; font-size: .72rem; font-weight: 800; transition: .15s ease; }
.button:hover:not(:disabled) { transform: translateY(-1px); }
.button:disabled { opacity: .48; cursor: not-allowed; }
.button.primary { color: #062016; border-color: #71dda5; background: linear-gradient(145deg, #7ce3aa, #47bd82); }
.button.secondary { border-color: var(--line); background: var(--surface-3); }
.button.ghost { border-color: var(--line); color: #c5d6ce; background: rgba(18, 36, 29, .55); }
.button.danger { border-color: rgba(244, 120, 111, .5); color: #fff4f2; background: linear-gradient(145deg, #b4443e, #7f2b28); }
.button.wide { width: 100%; }
.button-row { display: flex; flex-wrap: wrap; gap: 9px; }
.danger-panel { border-color: rgba(244, 120, 111, .27); background: linear-gradient(145deg, rgba(68, 29, 25, .76), rgba(26, 21, 18, .96)); }
.status-pill, .mono-chip { min-height: 26px; padding: 5px 9px; display: inline-flex; align-items: center; border: 1px solid var(--line); border-radius: 999px; color: #b6cbc1; background: rgba(141, 165, 154, .06); font-size: .63rem; font-weight: 800; letter-spacing: .05em; text-transform: uppercase; }
.status-pill.ok { color: #8befb9; border-color: rgba(102, 214, 154, .35); background: rgba(102, 214, 154, .08); }
.status-pill.warning { color: var(--amber); border-color: rgba(238, 188, 98, .32); background: rgba(238, 188, 98, .08); }
.status-pill.danger { color: #ffaaa3; border-color: rgba(244, 120, 111, .35); background: rgba(244, 120, 111, .08); }
.mono-chip { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; text-transform: none; }

input, select { width: 100%; min-height: 42px; padding: 9px 11px; border: 1px solid #315449; border-radius: 9px; outline: none; color: var(--ink); background: rgba(4, 13, 10, .62); }
input:focus, select:focus { border-color: var(--moss); box-shadow: 0 0 0 3px rgba(102, 214, 154, .1); }
label { display: grid; gap: 7px; color: #bfd0c8; font-size: .7rem; font-weight: 700; }
.form-panel { display: grid; gap: 15px; }
.field-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.check-row { display: flex; align-items: flex-start; gap: 9px; line-height: 1.4; }
.check-row input { width: 17px; min-height: 17px; margin: 1px 0 0; }
.filter-row { margin-bottom: 17px; display: grid; grid-template-columns: minmax(180px, 1fr) 180px auto; gap: 12px; align-items: end; }

.chart-panel { min-height: 620px; }
.chart-toolbar { margin-bottom: 16px; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.segmented { display: inline-grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.segmented button { min-height: 38px; padding: 7px 13px; border: 0; border-right: 1px solid var(--line); color: var(--muted); background: transparent; font-size: .68rem; font-weight: 750; }
.segmented button:last-child { border-right: 0; }
.segmented button.active { color: #062016; background: var(--moss); }
.metric-control { margin-bottom: 13px; display: flex; flex-wrap: wrap; gap: 8px; }
.metric-toggle { padding: 7px 9px; display: flex; align-items: center; gap: 7px; border: 1px solid var(--line); border-radius: 9px; color: var(--muted); background: rgba(5, 15, 12, .3); font-size: .65rem; }
.metric-toggle input { width: 14px; min-height: 14px; accent-color: var(--moss); }
.canvas-wrap { position: relative; min-height: 440px; border: 1px solid rgba(41, 70, 59, .7); border-radius: 13px; overflow: hidden; background: linear-gradient(180deg, rgba(7, 18, 14, .75), rgba(5, 13, 11, .9)); }
#history-chart { width: 100%; height: 440px; display: block; }
.chart-empty { position: absolute; inset: 0; display: grid; place-items: center; color: var(--muted); font-size: .75rem; }
.chart-legend { margin-top: 12px; display: flex; flex-wrap: wrap; gap: 12px; }
.legend-item { display: flex; align-items: center; gap: 6px; color: var(--muted); font-size: .65rem; }
.legend-swatch { width: 16px; height: 3px; border-radius: 4px; }
.color-0 { background: #66d69a; } .color-1 { background: #73b8e8; } .color-2 { background: #eebc62; }
.color-3 { background: #f4786f; } .color-4 { background: #b89cf1; } .color-5 { background: #4fd5cc; }
.color-6 { background: #4b9fea; } .color-7 { background: #f39a57; } .color-8 { background: #dd6fa7; }
.color-9 { background: #c4d56a; } .color-10 { background: #a8b7af; }

.schedule-grid, .settings-grid, .system-grid, .fault-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 11px; }
.schedule-card, .setting-card, .system-card, .fault-card { padding: 14px; border: 1px solid var(--line); border-radius: 12px; background: rgba(6, 17, 13, .34); }
.schedule-card span, .setting-card span, .system-card span, .fault-card span { display: block; color: var(--muted); font-size: .64rem; }
.schedule-card b, .setting-card b, .system-card b, .fault-card b { margin-top: 6px; display: block; font-size: .85rem; overflow-wrap: anywhere; }
.fault-card.active { border-color: rgba(244, 120, 111, .42); background: rgba(244, 120, 111, .07); }
.fault-card.active b { color: var(--red); }
.sensor-list { margin-bottom: 16px; display: grid; gap: 8px; }
.sensor-row { padding: 13px 14px; display: grid; grid-template-columns: minmax(130px, 1fr) repeat(3, minmax(90px, .7fr)); align-items: center; gap: 12px; border: 1px solid var(--line); border-radius: 11px; background: rgba(10, 25, 20, .68); }
.sensor-row b { font-size: .75rem; }
.sensor-row span { color: var(--muted); text-align: right; font-size: .67rem; overflow-wrap: anywhere; }
.sensor-row .ok { color: var(--moss); }
.sensor-row .bad { color: var(--red); }

.event-list { max-height: 650px; overflow: auto; display: grid; gap: 7px; }
.event-row { padding: 11px 12px; display: grid; grid-template-columns: 120px minmax(170px, .6fr) minmax(0, 1.4fr); gap: 11px; align-items: center; border: 1px solid rgba(41, 70, 59, .72); border-radius: 10px; background: rgba(5, 15, 12, .34); }
.event-row time, .event-row p { margin: 0; color: var(--muted); font-size: .65rem; }
.event-row b { font-size: .7rem; overflow-wrap: anywhere; }
.event-row.warning { border-left: 3px solid var(--amber); }
.event-row.error, .event-row.critical { border-left: 3px solid var(--red); }
.firmware-actions { margin-top: 16px; }
.firmware-list { display: grid; gap: 8px; }
.firmware-row { padding: 12px 13px; display: grid; grid-template-columns: minmax(180px, 1fr) minmax(220px, 1.4fr) auto; align-items: center; gap: 14px; border: 1px solid rgba(41, 70, 59, .72); border-radius: 11px; background: rgba(5, 15, 12, .34); }
.firmware-row b, .firmware-row span { display: block; }
.firmware-row b { font-size: .75rem; }
.firmware-row div span { margin-top: 4px; color: var(--muted); font-size: .65rem; }
.firmware-row code { overflow: hidden; color: #a9c8ba; font-size: .64rem; text-overflow: ellipsis; white-space: nowrap; }
.backup-panel { margin-top: 16px; }
.backup-warning { margin: 0 0 14px; padding: 10px 12px; border: 1px solid rgba(238, 188, 98, .3); border-radius: 10px; color: var(--amber); background: rgba(238, 188, 98, .06); font-size: .68rem; line-height: 1.5; }
.coming-soon { min-height: 310px; display: flex; align-items: center; gap: 28px; }
.big-number { color: rgba(102, 214, 154, .22); font-size: clamp(6rem, 14vw, 11rem); font-weight: 900; letter-spacing: -.1em; line-height: .8; }
.config-preview { max-height: 440px; margin: 0; padding: 13px; overflow: auto; border: 1px solid rgba(41, 70, 59, .75); border-radius: 10px; color: #afcfc0; background: #06100d; font: .67rem/1.55 ui-monospace, SFMono-Regular, Menlo, monospace; white-space: pre-wrap; }

.empty-state { min-height: calc(100vh - 160px); display: grid; place-items: center; align-content: center; text-align: center; }
.empty-state h1 { margin: 18px 0 8px; font-size: 2rem; letter-spacing: -.045em; }
.empty-state p { max-width: 480px; margin: 0 0 18px; color: var(--muted); line-height: 1.6; }
.empty-orbit { width: 94px; height: 94px; display: grid; place-items: center; border: 1px solid rgba(102, 214, 154, .32); border-radius: 50%; color: var(--moss); font-size: 2.3rem; font-weight: 900; box-shadow: 0 0 0 18px rgba(102, 214, 154, .035), 0 0 0 36px rgba(102, 214, 154, .018); }
.icon-button { width: 40px; height: 40px; display: none; place-items: center; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); }
.sidebar-backdrop { display: none; }

dialog { width: min(520px, calc(100vw - 28px)); padding: 0; border: 1px solid var(--line); border-radius: 18px; color: var(--ink); background: #10201a; box-shadow: 0 30px 90px rgba(0,0,0,.55); }
dialog::backdrop { background: rgba(0, 0, 0, .7); backdrop-filter: blur(3px); }
dialog form, .token-dialog-content { padding: 22px; display: grid; gap: 15px; }
dialog header { display: flex; align-items: center; justify-content: space-between; }
dialog h2 { margin: 4px 0 0; font-size: 1.35rem; }
dialog .icon-button { display: grid; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 9px; }
.token-dialog-content p { margin: 0; color: var(--muted); font-size: .75rem; line-height: 1.6; }
#one-time-token { padding: 14px; display: block; overflow-wrap: anywhere; border: 1px solid rgba(238, 188, 98, .4); border-radius: 10px; color: var(--amber); background: rgba(238, 188, 98, .07); font-size: .8rem; line-height: 1.55; }
.toast { position: fixed; right: 24px; bottom: 24px; z-index: 60; max-width: min(430px, calc(100vw - 48px)); padding: 12px 15px; border: 1px solid var(--line); border-radius: 11px; color: var(--ink); background: #183b2b; box-shadow: var(--shadow); font-size: .73rem; opacity: 0; pointer-events: none; transform: translateY(8px); transition: .18s ease; }
.toast.show { opacity: 1; transform: none; }
.toast.error { border-color: rgba(244, 120, 111, .48); background: #522925; }

.login-page { background: radial-gradient(circle at 18% 15%, rgba(75, 177, 126, .18), transparent 30rem), radial-gradient(circle at 90% 100%, rgba(238, 188, 98, .08), transparent 28rem), var(--bg); }
.login-shell { min-height: 100vh; padding: 7vw; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(340px, .75fr); gap: 8vw; align-items: center; }
.login-story { max-width: 720px; }
.login-story .brand-lockup { margin-bottom: clamp(55px, 10vh, 110px); }
.login-story h1 { margin: 14px 0 20px; max-width: 760px; font-size: clamp(3rem, 6.7vw, 6.3rem); line-height: .94; letter-spacing: -.075em; }
.login-story h1 em { color: var(--moss); font-style: normal; }
.login-lead { max-width: 590px; color: var(--muted); font-size: clamp(.9rem, 1.3vw, 1.08rem); line-height: 1.7; }
.login-facts { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 22px; }
.login-facts span { color: var(--muted); font-size: .7rem; }
.login-facts b { margin-right: 5px; color: var(--ink); font-size: 1rem; }
.login-card { padding: clamp(25px, 4vw, 42px); border: 1px solid var(--line); border-radius: 24px; background: linear-gradient(150deg, rgba(22, 42, 34, .96), rgba(11, 24, 20, .96)); box-shadow: 0 30px 100px rgba(0,0,0,.35); }
.login-card h2 { margin: 7px 0 5px; font-size: 1.55rem; letter-spacing: -.04em; }
.login-card > div > p:last-child, .login-security { color: var(--muted); font-size: .72rem; line-height: 1.55; }
.login-card form { margin-top: 28px; display: grid; gap: 16px; }
.form-error { margin: 0; padding: 10px 12px; border: 1px solid rgba(244,120,111,.35); border-radius: 9px; color: #ffb1aa; background: rgba(244,120,111,.08); font-size: .7rem; }
.login-security { margin: 22px 0 0; padding-top: 18px; border-top: 1px solid var(--line); }

@media (max-width: 1180px) {
  .metric-grid { grid-template-columns: repeat(3, minmax(135px, 1fr)); }
  .schedule-grid, .settings-grid, .system-grid, .fault-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 860px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: fixed; left: 0; width: min(285px, 86vw); transform: translateX(-103%); transition: transform .2s ease; }
  body.menu-open .sidebar { transform: translateX(0); }
  .sidebar-backdrop { position: fixed; inset: 0; z-index: 19; display: block; border: 0; background: rgba(0,0,0,.58); opacity: 0; pointer-events: none; transition: .2s ease; }
  body.menu-open .sidebar-backdrop { opacity: 1; pointer-events: auto; }
  .icon-button { display: grid; }
  .topbar { padding: 0 18px; }
  .device-picker label, .top-state #last-update { display: none; }
  .device-picker select { min-width: 0; max-width: 42vw; }
  .content { padding: 26px 18px 55px; }
  .split-grid { grid-template-columns: 1fr; }
  .metric-grid { grid-template-columns: repeat(2, minmax(130px, 1fr)); }
  .login-shell { grid-template-columns: 1fr; padding: 28px 18px; }
  .login-story { display: none; }
  .login-card { width: min(500px, 100%); margin: auto; }
}

@media (max-width: 560px) {
  .topbar { gap: 9px; }
  .top-state { display: none; }
  .topbar .button { padding-inline: 10px; }
  .device-picker { flex: 1; }
  .device-picker select { max-width: none; }
  .content { padding-inline: 12px; }
  .page-heading { align-items: flex-start; flex-direction: column; }
  .metric-grid, .schedule-grid, .settings-grid, .system-grid, .fault-grid, .field-pair { grid-template-columns: 1fr; }
  .detail-list { grid-template-columns: 1fr; gap: 4px; }
  .detail-list dd { margin-bottom: 8px; text-align: left; }
  .filter-row { grid-template-columns: 1fr; }
  .event-row { grid-template-columns: 1fr; }
  .firmware-row { grid-template-columns: 1fr; }
  .sensor-row { grid-template-columns: 1fr 1fr; }
  .sensor-row span { text-align: left; }
  .chart-toolbar { align-items: stretch; flex-direction: column; }
  .segmented { width: 100%; }
  .coming-soon { align-items: flex-start; flex-direction: column; }
  .canvas-wrap, #history-chart { height: 340px; min-height: 340px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
}