/* ===========================================================
   LOADLINE — design tokens
   Palette: paper mist background, deep forest ink, live-copper accent
   (copper = the conductor the whole system is built around)
=========================================================== */
:root {
  --paper: #f1f4ef;
  --paper-raised: #ffffff;
  --ink: #16211c;
  --ink-soft: #55635b;
  --ink-faint: #8b978d;
  --line: #dde3d8;
  --line-soft: #e8ebe4;

  --copper: #c1702e;
  --copper-deep: #9c5720;
  --copper-tint: #f3dcc2;

  --signal: #3f7d58;
  --signal-tint: #dbe9df;
  --alert: #b8433a;
  --alert-tint: #f3ddda;
  --amber: #c99a2e;
  --amber-tint: #f2e6c4;

  --slate: #4c5c73;
  --slate-tint: #dde4ea;
  --plum: #7a5372;
  --plum-tint: #ecdfe9;
  --teal: #2f7770;
  --teal-tint: #d9e9e6;
  --rose: #a8524f;
  --rose-tint: #ecd8d6;

  --font-display: "Space Grotesk", "Arial Narrow", sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", monospace;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;

  --shadow-card: 0 1px 2px rgba(22, 33, 28, 0.04), 0 8px 24px -14px rgba(22, 33, 28, 0.18);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
  background: var(--paper);
  background-image:
    radial-gradient(circle at 100% 0%, rgba(193, 112, 46, 0.06), transparent 45%),
    radial-gradient(circle at 0% 100%, rgba(63, 125, 88, 0.05), transparent 40%);
  color: var(--ink);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

::selection { background: var(--copper-tint); }

*:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 2px;
  border-radius: 4px;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

/* ===========================================================
   APP SHELL
=========================================================== */
.app-shell {
  display: grid;
  grid-template-columns: 248px 1fr;
  min-height: 100vh;
}

/* ---- Sidebar ---- */
.sidebar {
  border-right: 1px solid var(--line);
  padding: 28px 20px;
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}

.brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: linear-gradient(155deg, var(--copper) 0%, var(--copper-deep) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.brand-mark svg { width: 16px; height: 16px; }

.brand-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.18rem;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.brand-tag {
  font-size: 10.5px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 26px 40px;
}

.device-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  margin-bottom: 24px;
}

.pulse-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 3px var(--signal-tint);
  flex-shrink: 0;
  animation: pulse 2.2s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.45; } }

.device-pill-text { font-size: 11.5px; line-height: 1.35; }
.device-pill-text .t1 { color: var(--ink); font-weight: 600; }
.device-pill-text .t2 { color: var(--ink-faint); font-family: var(--font-mono); font-size: 10.5px; }

.nav-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 2px; }

.nav-link {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--ink-soft);
  transition: background 0.15s ease, color 0.15s ease;
}
.nav-link svg { width: 17px; height: 17px; flex-shrink: 0; opacity: 0.75; }
.nav-link:hover { background: var(--line-soft); color: var(--ink); }
.nav-link.active {
  background: var(--ink);
  color: var(--paper);
}
.nav-link.active svg { opacity: 1; }

.sidebar-footer {
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 10.5px;
  color: var(--ink-faint);
  line-height: 1.6;
}
.sidebar-footer b { color: var(--ink-soft); }

/* ---- Main ---- */
.main {
  padding: 34px 44px 60px;
  max-width: 1180px;
}

.page { display: none; }
.page.active { display: block; animation: fadeIn 0.25s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 30px;
}

.eyebrow {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--copper-deep);
  font-weight: 600;
  margin: 0 0 6px;
}

.page-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: 0;
  color: var(--ink);
}

.page-sub { color: var(--ink-soft); font-size: 13.5px; margin-top: 6px; max-width: 46ch; }

/* ===========================================================
   CARD PRIMITIVES
=========================================================== */
.card {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.card-pad { padding: 24px; }

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 18px;
}
.card-head h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  margin: 0;
}
.card-head .card-meta { font-size: 11px; color: var(--ink-faint); letter-spacing: 0.03em; }

/* ===========================================================
   OVERVIEW: hero row
=========================================================== */
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1.4fr;
  gap: 20px;
  margin-bottom: 20px;
}
@media (max-width: 980px) { .hero-grid { grid-template-columns: 1fr; } }

.hero-stat {
  padding: 30px 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.hero-stat .label { font-size: 11.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); }

.hero-stat .value-row { display: flex; align-items: baseline; gap: 8px; margin-top: 12px; }
.hero-stat .value { font-family: var(--font-display); font-size: 3.4rem; font-weight: 600; letter-spacing: -0.01em; line-height: 1; }
.hero-stat .unit { font-size: 1.1rem; color: var(--ink-faint); font-weight: 500; }

.hero-stat .sub-row { display: flex; gap: 18px; margin-top: 20px; }
.hero-stat .sub-item { font-size: 12px; color: var(--ink-soft); }
.hero-stat .sub-item b { color: var(--ink); font-family: var(--font-mono); }

.delta-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11.5px;
  font-weight: 600;
  padding: 4px 9px;
  border-radius: 999px;
  margin-top: 14px;
  width: fit-content;
}
.delta-badge.down { background: var(--signal-tint); color: var(--signal); }
.delta-badge.up { background: var(--alert-tint); color: var(--alert); }

/* ---- Ring (signature element) ---- */
.ring-card { display: flex; align-items: center; gap: 26px; padding: 24px 28px; }
.ring-wrap { position: relative; width: 190px; height: 190px; flex-shrink: 0; }
.ring-center {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.ring-center .rc-value { font-family: var(--font-mono); font-size: 1.5rem; font-weight: 600; }
.ring-center .rc-label { font-size: 9.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); margin-top: 3px; }

.ring-legend { display: flex; flex-direction: column; gap: 9px; flex: 1; }
.ring-legend-item { display: flex; align-items: center; gap: 9px; font-size: 12px; }
.ring-legend-dot { width: 9px; height: 9px; border-radius: 3px; flex-shrink: 0; }
.ring-legend-name { color: var(--ink); font-weight: 500; flex: 1; }
.ring-legend-pct { font-family: var(--font-mono); color: var(--ink-faint); font-size: 11.5px; }

/* ===========================================================
   SCREEN-TIME STYLE RANKED LIST
=========================================================== */
.rank-list { display: flex; flex-direction: column; }
.rank-row {
  display: grid;
  grid-template-columns: 30px 34px 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 13px 4px;
  border-bottom: 1px solid var(--line-soft);
  transition: background 0.12s ease;
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.rank-row:last-child { border-bottom: none; }
.rank-row:hover { background: var(--line-soft); }

.rank-num { font-family: var(--font-mono); font-size: 11px; color: var(--ink-faint); }

.appliance-icon {
  width: 34px; height: 34px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.appliance-icon svg { width: 18px; height: 18px; }

.rank-main { min-width: 0; }
.rank-name-row { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; margin-bottom: 6px; }
.rank-name { font-weight: 600; font-size: 13.5px; color: var(--ink); }
.rank-substate { font-size: 10.5px; color: var(--ink-faint); }
.rank-bar-track { height: 6px; border-radius: 999px; background: var(--line-soft); overflow: hidden; }
.rank-bar-fill { height: 100%; border-radius: 999px; }

.rank-figures { text-align: right; white-space: nowrap; }
.rank-kwh { font-family: var(--font-mono); font-size: 13px; font-weight: 600; color: var(--ink); }
.rank-time { font-size: 10.5px; color: var(--ink-faint); margin-top: 2px; }

.status-tag {
  font-size: 9.5px; letter-spacing: 0.06em; text-transform: uppercase;
  padding: 2px 7px; border-radius: 5px; font-weight: 600;
}
.status-tag.on { background: var(--signal-tint); color: var(--signal); }
.status-tag.standby { background: var(--amber-tint); color: var(--amber); }
.status-tag.off { background: var(--line-soft); color: var(--ink-faint); }

/* ===========================================================
   INFERENCE STRIP
=========================================================== */
.infer-strip {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 16px 22px;
  margin-top: 20px;
}
.infer-tag {
  font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); font-weight: 600;
}
.infer-state { font-family: var(--font-display); font-weight: 600; font-size: 1.05rem; transition: color 0.6s ease; }
.infer-conf-track { width: 130px; height: 6px; border-radius: 999px; background: var(--line-soft); overflow: hidden; }
.infer-conf-fill {
  height: 100%; border-radius: 999px; width: 0%;
  background: var(--copper);
  transition: width 0.6s cubic-bezier(.4,0,.2,1), background 0.6s ease;
}
.infer-conf-text { font-family: var(--font-mono); font-size: 12px; color: var(--ink-soft); }
.infer-meta { margin-left: auto; display: flex; gap: 22px; font-size: 11px; color: var(--ink-faint); font-family: var(--font-mono); }

.infer-dot {
  width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0;
  background: var(--copper);
  box-shadow: 0 0 0 3px var(--copper-tint);
  animation: pulse 2.2s ease-in-out infinite;
}

/* ---- Activity log (homeowner-facing event feed) ---- */
.activity-log { display: flex; flex-direction: column; max-height: 260px; overflow-y: auto; }
.activity-row {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 10px 2px; border-bottom: 1px solid var(--line-soft);
}
.activity-row:last-child { border-bottom: none; }
.activity-dot { width: 8px; height: 8px; border-radius: 50%; margin-top: 4px; flex-shrink: 0; }
.activity-text { font-size: 12px; color: var(--ink); line-height: 1.45; }
.activity-time { font-size: 10.5px; color: var(--ink-faint); font-family: var(--font-mono); margin-top: 2px; }

/* ===========================================================
   GRID LAYOUTS
=========================================================== */
.two-col { display: grid; grid-template-columns: 1.4fr 1fr; gap: 20px; margin-top: 20px; }
@media (max-width: 980px) { .two-col { grid-template-columns: 1fr; } }

.kpi-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 20px; }
@media (max-width: 900px) { .kpi-row { grid-template-columns: repeat(2, 1fr); } }

.kpi-card { padding: 18px 20px; border-top: 3px solid var(--copper); }
.kpi-card .kpi-label { font-size: 10.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: 8px; }
.kpi-card .kpi-value { font-family: var(--font-mono); font-size: 1.55rem; font-weight: 600; }
.kpi-card .kpi-unit { font-size: 0.75rem; color: var(--ink-faint); margin-left: 3px; }

/* ===========================================================
   APPLIANCE DETAIL
=========================================================== */
.detail-header {
  display: flex; align-items: center; gap: 18px;
  padding: 26px 28px;
  margin-bottom: 20px;
}
.detail-icon { width: 56px; height: 56px; border-radius: 16px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.detail-icon svg { width: 28px; height: 28px; }
.detail-title-row { display: flex; align-items: center; gap: 10px; }
.detail-name { font-family: var(--font-display); font-size: 1.5rem; font-weight: 600; }
.detail-category { font-size: 12px; color: var(--ink-soft); margin-top: 3px; }
.detail-back {
  margin-left: auto;
  font-size: 12px; font-weight: 600; color: var(--ink-soft);
  display: flex; align-items: center; gap: 5px;
  padding: 8px 13px; border-radius: 999px; border: 1px solid var(--line);
}
.detail-back:hover { background: var(--line-soft); color: var(--ink); }

.readout-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
@media (max-width: 900px) { .readout-row { grid-template-columns: repeat(2, 1fr); } }
.readout { background: var(--paper-raised); border: 1px solid var(--line); border-radius: var(--radius-md); padding: 14px 16px; }
.readout .r-label { font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: 6px; }
.readout .r-value { font-family: var(--font-mono); font-size: 1.25rem; font-weight: 600; }
.metric-unit { font-family: var(--font-body); font-size: 0.75rem; color: var(--ink-faint); font-weight: 400; margin-left: 2px; }

.chart-box { position: relative; height: 220px; }

.appliance-picker-wrap { position: relative; margin-bottom: 22px; }
.appliance-picker {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
  padding: 2px 2px 10px;
  scroll-snap-type: x proximity;
}
.appliance-picker::-webkit-scrollbar { height: 5px; }
.appliance-picker::-webkit-scrollbar-thumb { background: var(--line); border-radius: 4px; }

/* edge fade cues that more chips exist off-screen — scales to any count */
.appliance-picker-wrap::before,
.appliance-picker-wrap::after {
  content: ""; position: absolute; top: 0; bottom: 10px; width: 28px; z-index: 1; pointer-events: none;
}
.appliance-picker-wrap::before { left: 0; background: linear-gradient(90deg, var(--paper) 0%, transparent 100%); }
.appliance-picker-wrap::after { right: 0; background: linear-gradient(270deg, var(--paper) 0%, transparent 100%); }

.picker-chip {
  font-size: 11.5px; font-weight: 500;
  padding: 6px 11px; border-radius: 999px; border: 1px solid var(--line);
  background: var(--paper-raised); color: var(--ink-soft);
  display: flex; align-items: center; gap: 6px;
  white-space: nowrap; flex-shrink: 0; scroll-snap-align: start;
}
.picker-chip:hover { border-color: var(--copper); color: var(--ink); }
.picker-chip.active { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.picker-chip .dot { width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0; }

.picker-count {
  font-size: 10.5px; color: var(--ink-faint); margin: -14px 0 14px; letter-spacing: 0.02em;
}

/* ===========================================================
   TRENDS
=========================================================== */
.chart-card { padding: 24px; }
.stacked-legend { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 16px; }
.stacked-legend-item { display: flex; align-items: center; gap: 6px; font-size: 11.5px; color: var(--ink-soft); }
.stacked-legend-dot { width: 8px; height: 8px; border-radius: 2px; }

.insight-list { display: flex; flex-direction: column; gap: 10px; }
.insight-row { display: flex; gap: 12px; padding: 12px 4px; border-bottom: 1px solid var(--line-soft); }
.insight-row:last-child { border-bottom: none; }
.insight-icon { width: 30px; height: 30px; border-radius: 9px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; }
.insight-icon svg { width: 16px; height: 16px; }
.insight-text .it-title { font-size: 12.5px; font-weight: 600; }
.insight-text .it-sub { font-size: 11.5px; color: var(--ink-faint); margin-top: 2px; }

/* ===========================================================
   ALERTS
=========================================================== */
.alert-list { display: flex; flex-direction: column; gap: 14px; }
.alert-card { display: flex; gap: 16px; padding: 18px 20px; border-left: 4px solid var(--line); }
.alert-card.severity-high { border-left-color: var(--alert); }
.alert-card.severity-med { border-left-color: var(--amber); }
.alert-card.severity-low { border-left-color: var(--signal); }

.alert-icon { width: 38px; height: 38px; border-radius: 11px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; }
.alert-body { flex: 1; }
.alert-top { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.alert-title { font-weight: 600; font-size: 13.5px; }
.alert-time { font-size: 10.5px; color: var(--ink-faint); font-family: var(--font-mono); }
.alert-desc { font-size: 12.5px; color: var(--ink-soft); margin-top: 5px; line-height: 1.5; }
.alert-action {
  display: inline-block; margin-top: 10px; font-size: 11.5px; font-weight: 600;
  color: var(--copper-deep); padding: 5px 11px; border-radius: 999px; background: var(--copper-tint);
}

/* severity chip badge */
.sev-chip { font-size: 9.5px; letter-spacing: 0.06em; text-transform: uppercase; font-weight: 700; padding: 2px 8px; border-radius: 5px; }
.sev-chip.high { background: var(--alert-tint); color: var(--alert); }
.sev-chip.med { background: var(--amber-tint); color: var(--amber); }
.sev-chip.low { background: var(--signal-tint); color: var(--signal); }

/* ===========================================================
   RESPONSIVE
=========================================================== */
@media (prefers-reduced-motion: reduce) {
  .pulse-dot,
  .infer-dot,
  .rank-bar-fill,
  .infer-conf-fill,
  .infer-state,
  .readout .r-value,
  .page.active {
    animation: none !important;
    transition: none !important;
  }
}

@media (max-width: 860px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar {
    position: sticky; top: 0; height: auto; z-index: 20;
    flex-direction: row; align-items: center; padding: 14px 18px;
    border-right: none; border-bottom: 1px solid var(--line);
    background: var(--paper);
    overflow-x: auto;
  }
  .brand-tag, .sidebar-footer, .device-pill-text .t2 { display: none; }
  .brand { margin-bottom: 0; }
  .device-pill { margin-bottom: 0; }
  .nav-list { flex-direction: row; margin-left: auto; }
  .nav-link span { display: none; }
  .main { padding: 22px 18px 50px; }
  .ring-card { flex-direction: column; }
  .page-title { font-size: 1.5rem; }
  .hero-stat .value { font-size: 2.4rem; }
}

/* ========================================================
   LIVE TEST TAB — intentionally minimal
======================================================== */
.lt-tile {
  background: #1a1a1a;
  border: 1px solid #2a2a2a;
  border-radius: 8px;
  padding: 12px 18px;
  min-width: 110px;
  font-family: 'IBM Plex Mono', monospace;
}
.lt-tile-label {
  font-size: 0.7rem;
  color: #666;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}
.lt-tile-val {
  font-size: 1.3rem;
  font-weight: 600;
  color: #a3e635;
}

#lt-appliance-table td, #lt-appliance-table th {
  padding: 8px 12px;
  border-bottom: 1px solid #222;
  font-family: 'IBM Plex Mono', monospace;
}
#lt-appliance-table tr:last-child td { border-bottom: none; }
#lt-appliance-body tr td:first-child { color: #a3e635; font-weight: 600; }
#lt-appliance-body tr td:nth-child(2) { color: #f9a825; }
#lt-appliance-body tr td:nth-child(3) { color: #7dd3fc; }