/*
 * iot-liveness.css — nodash IoT "liveness" system
 * DEPENDENCY: load AFTER app.css (overrides the flat .sensor-module spine).
 *
 * Two parts:
 *  1) Shared upgrade — turns every IoT module's flat 3px left border into a
 *     gradient signal-spine with a glowing head dot. Applies to all tabs via
 *     the existing .sensor-module / --sm-color system, no markup change.
 *  2) Device-health components — fleet strip, roster lists, meters, node cards.
 *     Freshness (last-seen age) is the primary metric here.
 */

/* ── 1. Upgraded signal-spine (all IoT modules) ─────────────────────────── */
.sensor-module {
  border-left-color: transparent;   /* replaced by the gradient rail below */
  padding-left: calc(var(--space-4) + 9px);
}
.sensor-module::before {
  content: '';
  position: absolute;
  left: 0; top: 10px; bottom: 10px;
  width: 3px; border-radius: 3px;
  background: linear-gradient(
    to bottom,
    var(--sm-color, var(--border-default)),
    color-mix(in srgb, var(--sm-color, transparent) 6%, transparent) 94%);
}
/* lift the header dot into a glowing node at the top of the rail */
.sensor-module-dot {
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--sm-color, var(--color-brand)) 14%, transparent);
}

/* ── shared: freshness age-chip ─────────────────────────────────────────── */
.age-chip {
  font-family: var(--font-family-mono);
  font-size: 10.5px; font-weight: var(--font-weight-semibold);
  letter-spacing: .02em; white-space: nowrap;
  color: var(--text-light);
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  padding: 2px 7px;
  display: inline-flex; align-items: center; gap: 5px;
}
.age-chip::before {
  content: ''; width: 5px; height: 5px; border-radius: 50%;
  background: var(--color-success); flex-shrink: 0;
}
.age-chip--warn {
  color: var(--color-warning);
  background: color-mix(in srgb, var(--color-warning) 14%, transparent);
  border-color: color-mix(in srgb, var(--color-warning) 40%, transparent);
}
.age-chip--warn::before { background: var(--color-warning); }
.age-chip--bad {
  color: var(--color-danger);
  background: color-mix(in srgb, var(--color-danger) 14%, transparent);
  border-color: color-mix(in srgb, var(--color-danger) 40%, transparent);
}
.age-chip--bad::before { background: var(--color-danger); }

/* ── Vitals strip (Sensors / Energy / Sleep tabs) ───────────────────────── */
.iot-vitals {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(158px, 1fr));
  gap: var(--space-3); margin-bottom: var(--space-5);
}
.vital {
  position: relative; overflow: hidden;
  background: var(--bg-card); border: 1px solid var(--border-default);
  border-radius: var(--radius-md); box-shadow: var(--shadow-sm);
  padding: 12px 14px;
}
.vital::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--vc, var(--color-brand));
}
.vital--warn::before { background: var(--color-warning); }
.vital--high::before { background: var(--color-high); }
.vital--bad::before  { background: var(--color-danger); }
.vital-top { display: flex; align-items: center; justify-content: space-between; gap: 6px; margin-bottom: 9px; }
.vital-name {
  display: flex; align-items: center; gap: 7px;
  font-size: 11px; font-weight: var(--font-weight-bold);
  letter-spacing: .05em; text-transform: uppercase; color: var(--text-muted);
}
.vital-name .d {
  width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0;
  background: var(--vc, var(--color-brand));
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--vc, var(--color-brand)) 15%, transparent);
}
.vital-val { display: flex; align-items: baseline; gap: 5px; }
.vital-val .n {
  font-family: var(--font-family-mono); font-size: var(--font-size-metric-lg); font-weight: 650;
  line-height: 1; letter-spacing: -.02em; font-variant-numeric: tabular-nums; color: var(--text-primary);
}
.vital-val .u { font-size: 12px; font-weight: var(--font-weight-semibold); color: var(--text-muted); }

/* ── 2a. Fleet strip ────────────────────────────────────────────────────── */
.iot-band {
  font-family: var(--font-family-mono);
  font-size: 11px; font-weight: var(--font-weight-semibold);
  letter-spacing: .11em; text-transform: uppercase; color: var(--text-light);
  display: flex; align-items: center; gap: 9px;
  margin: var(--space-6) 0 var(--space-3);
}
.iot-band::after { content: ''; flex: 1; height: 1px; background: var(--border-light); }

.fleet-strip {
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--space-4) var(--space-5);
  display: flex; align-items: center; gap: var(--space-6); flex-wrap: wrap;
}
.fleet-stat { display: flex; flex-direction: column; gap: 3px; }
.fleet-stat .n {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-metric-lg); font-weight: 650; line-height: 1;
  font-variant-numeric: tabular-nums; letter-spacing: -.02em; color: var(--text-primary);
}
.fleet-stat .k {
  font-size: 10.5px; font-weight: var(--font-weight-bold);
  letter-spacing: .06em; text-transform: uppercase; color: var(--text-muted);
}
.fleet-stat--ok   .n { color: var(--color-success); }
.fleet-stat--warn .n { color: var(--color-warning); }
.fleet-stat--bad  .n { color: var(--color-danger); }
.fleet-sep { width: 1px; align-self: stretch; background: var(--border-light); }
.fleet-dist { flex: 1; min-width: 220px; display: flex; flex-direction: column; gap: 7px; }
.fleet-dist .lab {
  font-size: 10.5px; font-weight: var(--font-weight-bold);
  letter-spacing: .06em; text-transform: uppercase; color: var(--text-muted);
  display: flex; justify-content: space-between;
}
.fleet-dist .lab .mono { font-family: var(--font-family-mono); color: var(--text-light); font-weight: var(--font-weight-medium); }
.distbar { height: 9px; border-radius: var(--radius-full); overflow: hidden; display: flex; background: var(--bg-subtle); }
.distbar > span { height: 100%; }

/* ── 2b. Roster (freshness / battery / signal) ──────────────────────────── */
.iot-roster { display: flex; flex-direction: column; }
.roster-row {
  display: grid;
  grid-template-columns: 13px minmax(0, 1.5fr) minmax(84px, 1fr) auto;
  gap: var(--space-3); align-items: center;
  padding: 9px 10px; border-radius: var(--radius-sm);
}
.roster-row + .roster-row { border-top: 1px solid var(--border-light); }
.roster-row:hover { background: var(--bg-subtle); }
.roster-row--warn { background: color-mix(in srgb, var(--color-warning) 6%, transparent); }
.roster-row--bad  { background: color-mix(in srgb, var(--color-danger) 7%, transparent); }
.roster-dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--rc, var(--color-neutral));
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--rc, var(--color-neutral)) 15%, transparent);
}
.roster-name { min-width: 0; }
.roster-name b {
  font-size: var(--font-size-sm); font-weight: var(--font-weight-bold);
  display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: var(--text-primary);
}
.roster-name span {
  font-family: var(--font-family-mono); font-size: 10.5px; color: var(--text-light);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; display: block;
}
.hmeter { height: 6px; border-radius: 3px; background: var(--bg-subtle); overflow: hidden; box-shadow: inset 0 0 0 1px var(--border-light); }
.hmeter > i { display: block; height: 100%; border-radius: 3px; background: var(--mc, var(--color-success)); }
.roster-val {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-base); font-weight: 650; font-variant-numeric: tabular-nums;
  letter-spacing: -.02em; text-align: right; min-width: 60px; color: var(--text-primary);
}
.roster-val small {
  display: block; font-size: 9.5px; font-weight: var(--font-weight-semibold);
  letter-spacing: .04em; text-transform: uppercase; color: var(--text-light);
}
.roster-val--ok   { color: var(--color-success); }
.roster-val--warn { color: var(--color-warning); }
.roster-val--bad  { color: var(--color-danger); }

.roster-pair { display: grid; grid-template-columns: repeat(auto-fit, minmax(360px, 1fr)); gap: var(--space-4); }
.roster-pair .sensor-module { margin-bottom: 0; }

/* ── 2c. Node cards ─────────────────────────────────────────────────────── */
.node-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--space-3); }
.node-card {
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--space-4);
  position: relative; overflow: hidden;
}
.node-card::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--sm-color, var(--color-neutral));
}
.node-hd { display: flex; align-items: center; gap: var(--space-2-half); margin-bottom: var(--space-3); }
.node-hd .sensor-module-ico { opacity: 1; }
.node-name { font-size: var(--font-size-sm); font-weight: var(--font-weight-extrabold); letter-spacing: -.01em; color: var(--text-primary); }
.node-name small {
  display: block; font-family: var(--font-family-mono); font-size: 10px;
  font-weight: var(--font-weight-normal); color: var(--text-light); letter-spacing: .02em;
}
.node-hd .age-chip { margin-left: auto; }
.node-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(74px, 1fr)); gap: 9px 12px; }
.node-stat .k {
  font-size: 9.5px; font-weight: var(--font-weight-bold); letter-spacing: .05em;
  text-transform: uppercase; color: var(--text-muted); margin-bottom: 3px;
}
.node-stat .v {
  font-family: var(--font-family-mono); font-size: var(--font-size-lg); font-weight: var(--font-weight-semibold);
  font-variant-numeric: tabular-nums; letter-spacing: -.02em; color: var(--text-primary);
}
.node-stat .v u { text-decoration: none; font-size: 11px; color: var(--text-muted); }
.node-stat .v--ok   { color: var(--color-success); }
.node-stat .v--warn { color: var(--color-warning); }
.node-stat .v--bad  { color: var(--color-danger); }
.node-kiosk {
  margin-top: var(--space-3); padding-top: var(--space-2-half);
  border-top: 1px solid var(--border-light);
  display: flex; gap: 7px; flex-wrap: wrap; align-items: center;
}
.kchip {
  font-size: 11px; font-weight: var(--font-weight-bold); padding: 3px 9px;
  border-radius: var(--radius-full); background: var(--bg-subtle); color: var(--text-muted);
  border: 1px solid var(--border-light);
}
.kchip small { font-family: var(--font-family-mono); font-weight: var(--font-weight-normal); opacity: .7; }
.kchip--active {
  background: color-mix(in srgb, var(--color-success) 15%, transparent);
  color: var(--color-success);
  border-color: color-mix(in srgb, var(--color-success) 38%, transparent);
}
.kchip--warn {
  background: color-mix(in srgb, var(--color-warning) 15%, transparent);
  color: var(--color-warning);
  border-color: color-mix(in srgb, var(--color-warning) 38%, transparent);
}
.kchip--bad {
  background: color-mix(in srgb, var(--color-danger) 15%, transparent);
  color: var(--color-danger);
  border-color: color-mix(in srgb, var(--color-danger) 38%, transparent);
}

@media (max-width: 768px) {
  .fleet-strip { gap: var(--space-4); }
  .fleet-sep { display: none; }
  .roster-row { grid-template-columns: 13px minmax(0,1.4fr) auto; }
  .roster-row .hmeter { display: none; }
}