:root {
  color-scheme: dark;
  --bg: #070a10;
  --panel: #101722;
  --panel-2: #151f2d;
  --line: #243247;
  --text: #edf5ff;
  --muted: #8fa1b8;
  --cyan: #39d0ff;
  --green: #56e39f;
  --amber: #ffbf47;
  --red: #ff6678;
  --purple: #a68cff;
  font-family: Inter, "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: radial-gradient(circle at 20% 0%, #112238 0, var(--bg) 42%); color: var(--text); }
button, input { font: inherit; }
.shell { width: min(1180px, 100%); margin: 0 auto; padding: 24px clamp(16px, 4vw, 44px) 48px; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-bottom: 28px; }
h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 0; font-size: clamp(2rem, 5vw, 3.5rem); letter-spacing: -0.04em; }
.eyebrow { margin-bottom: 6px; color: var(--cyan); font-size: .72rem; font-weight: 800; letter-spacing: .18em; }
.muted { color: var(--muted); }
.hidden { display: none !important; }
.topbar-actions { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }
.server-time { color: var(--muted); font-variant-numeric: tabular-nums; }
.button { border: 1px solid var(--line); border-radius: 10px; padding: 10px 16px; cursor: pointer; color: var(--text); background: var(--panel-2); }
.button:hover { border-color: var(--cyan); }
.button.primary { background: linear-gradient(135deg, #0c84b8, #2457d6); border-color: transparent; font-weight: 700; }
.button.ghost { background: transparent; }
.login-panel { display: grid; place-items: center; min-height: 62vh; }
.login-card { width: min(440px, 100%); display: grid; gap: 14px; padding: 28px; border: 1px solid var(--line); border-radius: 18px; background: rgba(16, 23, 34, .94); box-shadow: 0 30px 80px rgba(0,0,0,.35); }
.login-card input { width: 100%; border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; background: #090e16; color: var(--text); }
.error { min-height: 1.2em; color: var(--red); }
.summary-row { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin-bottom: 18px; }
.summary-row div { border: 1px solid var(--line); border-radius: 14px; padding: 14px 18px; background: rgba(16,23,34,.84); }
.summary-row span { display: block; font-size: 1.6rem; font-weight: 800; }
.summary-row small { color: var(--muted); text-transform: uppercase; letter-spacing: .1em; }
.device-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(310px, 1fr)); gap: 16px; }
.device-card { border: 1px solid var(--line); border-radius: 18px; padding: 20px; background: linear-gradient(160deg, rgba(21,31,45,.98), rgba(11,16,25,.98)); box-shadow: 0 18px 50px rgba(0,0,0,.22); }
.device-card[data-presence="online"] { border-color: rgba(86,227,159,.48); }
.device-card[data-presence="stale"] { border-color: rgba(255,191,71,.48); }
.card-header, .card-footer, .session-strip { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.device-group { margin-bottom: 4px; color: var(--purple); font-size: .72rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.device-name { margin-bottom: 4px; font-size: 1.35rem; }
.device-location { margin-bottom: 0; }
.presence-badge { border-radius: 999px; padding: 6px 10px; font-size: .72rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.presence-badge.online { color: var(--green); background: rgba(86,227,159,.1); }
.presence-badge.stale { color: var(--amber); background: rgba(255,191,71,.1); }
.presence-badge.offline { color: var(--red); background: rgba(255,102,120,.1); }
.session-strip { margin: 18px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 12px 0; }
.lock-state { color: var(--cyan); }
.idle-state { color: var(--muted); }
.temperature-grid, .metric-grid { display: grid; gap: 10px; }
.temperature-grid { grid-template-columns: repeat(3, 1fr); margin-bottom: 12px; }
.metric-grid { grid-template-columns: repeat(2, 1fr); }
.temperature-grid div, .metric-grid div { padding: 12px; border-radius: 12px; background: rgba(7,10,16,.55); }
.temperature-grid small, .metric-grid small { display: block; margin-bottom: 4px; color: var(--muted); }
.temperature-grid strong { font-size: 1.35rem; }
.card-footer { margin-top: 18px; color: var(--muted); font-size: .82rem; }
@media (max-width: 680px) {
  .topbar { align-items: flex-start; flex-direction: column; }
  .topbar-actions { justify-content: flex-start; }
  .summary-row { grid-template-columns: repeat(2, 1fr); }
  .device-grid { grid-template-columns: 1fr; }
}
.remote-control-panel {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}
.remote-control-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}
.remote-control-header small {
  display: block;
  margin-bottom: 4px;
  color: var(--purple);
  font-weight: 800;
  letter-spacing: .1em;
}
.remote-capabilities {
  font-size: .86rem;
  color: var(--muted);
}
.command-state {
  max-width: 48%;
  text-align: right;
  color: var(--muted);
  font-size: .8rem;
}
.command-state.succeeded { color: var(--green); }
.command-state.failed,
.command-state.rejected,
.command-state.expired { color: var(--red); }
.command-state.accepted,
.command-state.delivered,
.command-state.queued { color: var(--amber); }
.command-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}
.command-button {
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 10px;
  color: var(--text);
  background: rgba(26, 43, 61, .8);
  cursor: pointer;
}
.command-button:hover:not(:disabled) {
  border-color: var(--cyan);
  transform: translateY(-1px);
}
.command-button:disabled {
  opacity: .35;
  cursor: not-allowed;
}
.command-button.diagnostic {
  color: var(--cyan);
}
.command-button.caution {
  color: var(--amber);
}
.command-button.danger {
  color: #ff93a0;
  background: rgba(96, 25, 38, .32);
}
.command-button.ghost-command {
  background: transparent;
}
.command-cancel {
  grid-column: span 2;
}
@media (max-width: 680px) {
  .command-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .command-cancel { grid-column: span 2; }
  .remote-control-header { flex-direction: column; }
  .command-state { max-width: 100%; text-align: left; }
}

/* v0.5 remote inspection and intelligent forced-power workflow */
.inspect-command {
  color: var(--purple);
  background: rgba(73, 54, 123, .26);
}
.force-command {
  color: #ffb0ba;
  background: rgba(126, 24, 44, .42);
  border-color: rgba(255, 102, 120, .38);
}
.command-cancel {
  grid-column: span 2;
}
.inspection-panel {
  margin-top: 14px;
  padding: 14px;
  border: 1px solid rgba(166, 140, 255, .30);
  border-radius: 12px;
  background: rgba(13, 14, 26, .62);
}
.inspection-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
}
.inspection-header small {
  display: block;
  margin-bottom: 4px;
  color: var(--purple);
  font-weight: 800;
  letter-spacing: .08em;
}
.inspection-active {
  display: block;
  overflow-wrap: anywhere;
}
.inspection-time {
  color: var(--muted);
  font-size: .78rem;
  white-space: nowrap;
}
.inspection-summary {
  margin: 10px 0 8px;
  font-size: .84rem;
}
.inspection-window-list,
.force-window-list {
  display: grid;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.inspection-window-list li,
.force-window-list li {
  padding: 8px 10px;
  border-radius: 9px;
  background: rgba(7, 10, 16, .62);
  overflow-wrap: anywhere;
}
.window-process {
  color: var(--cyan);
  font-weight: 700;
}
.window-title {
  display: block;
  margin-top: 2px;
  color: var(--text);
}
.window-evidence {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: .78rem;
}
.window-unsaved-confirmed {
  border-left: 3px solid var(--red);
}
.window-unsaved-likely {
  border-left: 3px solid var(--amber);
}
.window-shutdown-blocker {
  box-shadow: inset 0 0 0 1px rgba(255, 191, 71, .35);
}
.modal-backdrop {
  position: fixed;
  z-index: 1000;
  inset: 0;
  display: grid;
  place-items: center;
  padding: max(16px, env(safe-area-inset-top)) 16px max(16px, env(safe-area-inset-bottom));
  background: rgba(0, 0, 0, .76);
  backdrop-filter: blur(8px);
}
.modal-card {
  width: min(760px, 100%);
  max-height: min(860px, 92vh);
  overflow: auto;
  padding: 24px;
  border: 1px solid rgba(255, 102, 120, .44);
  border-radius: 18px;
  background: linear-gradient(160deg, rgba(27, 28, 42, .99), rgba(10, 13, 21, .99));
  box-shadow: 0 30px 100px rgba(0, 0, 0, .58);
}
.modal-card h2 {
  margin-bottom: 10px;
}
.modal-warning {
  color: #ffd1d6;
  line-height: 1.45;
}
.preflight-active-block {
  margin: 14px 0;
  padding: 12px;
  border-radius: 12px;
  background: rgba(57, 208, 255, .08);
}
.preflight-active-block small {
  display: block;
  margin-bottom: 4px;
  color: var(--cyan);
  font-weight: 800;
  letter-spacing: .08em;
}
.preflight-summary {
  margin: 12px 0;
  color: var(--muted);
}
.force-confirm-label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 18px;
  padding: 12px;
  border: 1px solid rgba(255, 102, 120, .28);
  border-radius: 12px;
  color: #ffd9dd;
}
.force-confirm-label input {
  margin-top: 3px;
  transform: scale(1.18);
}
.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 18px;
}
.force-confirm {
  border-color: rgba(255, 102, 120, .55);
  background: rgba(126, 24, 44, .68);
  color: #fff;
}
.force-confirm:disabled {
  opacity: .35;
  cursor: not-allowed;
}
body.modal-open {
  overflow: hidden;
}
@media (max-width: 680px) {
  .inspection-header {
    flex-direction: column;
  }
  .inspection-time {
    white-space: normal;
  }
  .modal-card {
    padding: 18px;
    max-height: 94vh;
  }
  .modal-actions {
    flex-direction: column-reverse;
  }
  .modal-actions .button {
    width: 100%;
  }
}

/* v0.6 signed production update status */
.update-panel {
  margin-top: 16px;
  padding: 14px;
  border: 1px solid rgba(57, 208, 255, .25);
  border-radius: 12px;
  background: rgba(8, 22, 34, .58);
}
.update-panel.update-available {
  border-color: rgba(86, 227, 159, .48);
  box-shadow: inset 0 0 0 1px rgba(86, 227, 159, .10);
}
.update-panel.update-error {
  border-color: rgba(255, 102, 120, .48);
}
.update-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}
.update-header small {
  display: block;
  margin-bottom: 4px;
  color: var(--cyan);
  font-weight: 800;
  letter-spacing: .08em;
}
.update-state {
  max-width: 48%;
  color: var(--green);
  font-size: .82rem;
  text-align: right;
  overflow-wrap: anywhere;
}
.update-panel.update-error .update-state {
  color: var(--red);
}
.update-summary {
  margin: 10px 0;
  font-size: .8rem;
  overflow-wrap: anywhere;
}
.update-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}
.update-command {
  color: var(--cyan);
  background: rgba(24, 82, 108, .28);
}
.update-install {
  color: var(--green);
  background: rgba(28, 100, 72, .27);
}
@media (max-width: 680px) {
  .update-header { flex-direction: column; }
  .update-state { max-width: 100%; text-align: left; }
}