:root {
  color-scheme: dark;
  --background: #0c1117;
  --surface: #151d26;
  --surface-soft: #1b2632;
  --line: #2a3948;
  --text: #ecf3f9;
  --muted: #91a2b2;
  --cyan: #54d8d0;
  --blue: #5ca9ff;
  --orange: #ffad66;
  --red: #ff7878;
  --green: #5ce0a3;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, "Segoe UI", system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 15% -10%, #163448 0, transparent 34rem),
    radial-gradient(circle at 95% 5%, #193233 0, transparent 30rem),
    var(--background);
}
button, input, select { font: inherit; }
button {
  border: 1px solid transparent;
  border-radius: .65rem;
  padding: .72rem 1rem;
  color: #071314;
  background: var(--cyan);
  font-weight: 700;
  cursor: pointer;
}
button:hover { filter: brightness(1.08); }
button:disabled { opacity: .55; cursor: wait; }
button.secondary { color: var(--text); background: transparent; border-color: var(--line); }
.topbar {
  min-height: 6rem;
  padding: 1rem clamp(1rem, 5vw, 5rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255,255,255,.08);
  background: rgba(12,17,23,.76);
  backdrop-filter: blur(14px);
}
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 0; letter-spacing: -.04em; font-size: 2rem; }
h2 { font-size: clamp(1.6rem, 3vw, 2.5rem); margin-bottom: .7rem; }
h3 { margin-bottom: 0; font-size: 1.25rem; }
.eyebrow, .section-kicker {
  margin-bottom: .3rem;
  color: var(--cyan);
  font-size: .7rem;
  font-weight: 800;
  letter-spacing: .13em;
  text-transform: uppercase;
}
.session-summary { display: flex; gap: 1rem; align-items: center; }
main { width: min(1440px, 100%); margin: 0 auto; padding: clamp(1rem, 4vw, 3.5rem); }
.login-shell { min-height: calc(100vh - 10rem); display: grid; place-items: center; }
.panel {
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: linear-gradient(145deg, rgba(27,38,50,.93), rgba(18,26,34,.93));
  box-shadow: 0 1.5rem 4rem rgba(0,0,0,.22);
}
.login-card { width: min(28rem, 100%); padding: 2rem; }
label { display: block; margin: 1rem 0 .4rem; color: var(--muted); font-size: .85rem; }
input {
  width: 100%;
  padding: .8rem .9rem;
  border: 1px solid var(--line);
  border-radius: .65rem;
  color: var(--text);
  background: #0f171f;
  outline: none;
}
input:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(84,216,208,.12); }
.login-card button { width: 100%; margin-top: 1.25rem; }
.muted, .empty { color: var(--muted); }
.error { min-height: 1.25rem; margin: .8rem 0 0; color: var(--red); }
.dashboard-heading, .panel-heading { display: flex; justify-content: space-between; align-items: flex-end; gap: 1rem; }
.metric-row { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; margin: 1.2rem 0 1.5rem; }
.metric { padding: 1.1rem 1.2rem; border: 1px solid var(--line); border-radius: .9rem; background: rgba(21,29,38,.76); }
.metric span { display: block; color: var(--cyan); font-size: 2rem; font-weight: 800; }
.metric small { color: var(--muted); }
.agent-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(310px, 1fr)); gap: 1rem; }
.agent-card { padding: 1.2rem; border: 1px solid var(--line); border-radius: 1rem; background: var(--surface); }
.agent-card header { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; }
.agent-card h3 { margin-bottom: .3rem; }
.agent-id { color: var(--muted); font: .75rem ui-monospace, monospace; overflow-wrap: anywhere; }
.status { padding: .25rem .55rem; border-radius: 2rem; font-size: .72rem; font-weight: 800; }
.status.online { color: #082117; background: var(--green); }
.status.offline { color: #2a1605; background: var(--orange); }
.detail-list { margin: 1rem 0 0; display: grid; grid-template-columns: 7rem 1fr; gap: .4rem .8rem; font-size: .82rem; }
.detail-list dt { color: var(--muted); }
.detail-list dd { margin: 0; overflow-wrap: anywhere; }
.adapter-panel { margin-top: 1rem; padding-top: .9rem; border-top: 1px solid var(--line); }
.adapter-title { margin-bottom: .45rem; font-size: .78rem; font-weight: 700; }
.adapter-controls { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: .55rem; }
.adapter-controls button { padding: .62rem .8rem; }
.adapter-select {
  min-width: 0;
  width: 100%;
  padding: .62rem .7rem;
  border: 1px solid var(--line);
  border-radius: .6rem;
  color: var(--text);
  background: #0f171f;
  outline: none;
}
.adapter-select:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(84,216,208,.12); }
.adapter-select:disabled { opacity: .6; }
.adapter-selection-status { min-height: 1.1rem; margin-top: .45rem; color: var(--muted); font-size: .75rem; }
.adapter-selection-status.confirmed { color: var(--green); }
.adapter-selection-status.pending { color: var(--orange); }
.adapter-selection-status.error-inline { color: var(--red); }
.read-did-panel { margin-top: .9rem; padding-top: .9rem; border-top: 1px solid var(--line); }
.read-did-controls { display: grid; grid-template-columns: 6.5rem 8.5rem 8.5rem auto; gap: .5rem; align-items: end; }
.diagnostic-field { margin: 0; }
.diagnostic-field span { display: block; margin-bottom: .25rem; color: var(--muted); font-size: .7rem; }
.diagnostic-field input { padding: .58rem .6rem; font-family: ui-monospace, monospace; text-transform: uppercase; }
.read-did-controls button { padding: .62rem .8rem; white-space: nowrap; }
.diagnostic-note { margin-top: .45rem; color: var(--muted); font-size: .7rem; }
.job-result { min-height: 1.2rem; margin-top: .65rem; color: var(--muted); font-size: .76rem; overflow-wrap: anywhere; }
.job-result strong, .job-result code { display: block; margin-top: .25rem; }
.job-result.running, .job-result.delivered, .job-result.queued { color: var(--orange); }
.job-result.completed { color: var(--green); }
.job-result.failed, .job-result.rejected, .job-error { color: var(--red); }
.job-result code { padding: .35rem; border-radius: .35rem; color: var(--text); background: #0f171f; font-family: ui-monospace, monospace; }
.chips { display: flex; flex-wrap: wrap; gap: .35rem; margin-top: .8rem; }
.chip { padding: .2rem .45rem; border-radius: .35rem; color: var(--blue); background: rgba(92,169,255,.1); font-size: .7rem; }
.chip.ready { color: var(--blue); }
.chip.unavailable { color: var(--muted); background: rgba(145,162,178,.08); }
.lower-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 1.5rem; }
.lower-grid .panel { padding: 1.25rem; }
.compact-list { display: grid; gap: .55rem; margin-top: 1rem; }
.list-row { padding: .8rem; display: flex; justify-content: space-between; gap: 1rem; border: 1px solid var(--line); border-radius: .7rem; background: rgba(12,17,23,.35); }
.list-row strong { display: block; }
.list-row small { color: var(--muted); }
.brand-row {
  width: 100%;
  padding: .8rem;
  color: var(--text);
  text-align: left;
  font-weight: inherit;
  cursor: pointer;
}
.brand-row:hover { border-color: var(--cyan); background: rgba(84,216,208,.08); }
.breadcrumb { display: flex; align-items: center; gap: .8rem; margin-bottom: 1.4rem; color: var(--muted); }
.compact-button { padding: .5rem .75rem; }
.page-heading { margin-bottom: 1.5rem; }
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 25rem)); gap: 1rem; }
.feature-card { padding: 1.4rem; }
.feature-card p { min-height: 3.8rem; margin: .7rem 0 1.2rem; }
.feature-icon {
  display: inline-grid;
  place-items: center;
  min-width: 3rem;
  height: 2rem;
  margin-bottom: 1rem;
  border-radius: .5rem;
  color: var(--cyan);
  background: rgba(84,216,208,.1);
  font: 800 .75rem ui-monospace, monospace;
}
.operation-panel, .results-panel { padding: 1.25rem; }
.operation-fields { display: grid; grid-template-columns: minmax(16rem, 2fr) minmax(8rem, 1fr) minmax(8rem, 1fr); gap: .8rem; }
.operation-fields label { margin: 0; }
.operation-fields label > span { display: block; margin-bottom: .4rem; }
.operation-fields input { font-family: ui-monospace, monospace; text-transform: uppercase; }
.operation-actions { display: flex; align-items: center; gap: 1rem; margin-top: 1rem; color: var(--muted); font-size: .78rem; }
.results-panel { margin-top: 1rem; }
.flash-panel { margin-top: 1rem; padding: 1.25rem; border-color: rgba(255,173,102,.55); }
.warning-text { margin: .9rem 0 1rem; color: var(--orange); }
.firmware-upload-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .75rem; margin-bottom: .8rem; }
.firmware-file { margin: 0; padding: .85rem; border: 1px solid var(--line); border-radius: .7rem; background: rgba(12,17,23,.38); }
.firmware-file span, .firmware-file strong, .firmware-file small { display: block; }
.firmware-file strong { margin: .25rem 0 .65rem; color: var(--text); font: .78rem ui-monospace, monospace; overflow-wrap: anywhere; }
.firmware-file input { padding: .55rem; font-size: .75rem; }
.firmware-file small { margin-top: .55rem; color: var(--muted); overflow-wrap: anywhere; }
.firmware-file small.verified { color: var(--green); }
.firmware-file small.uploading { color: var(--orange); }
.flash-preflight { display: grid; gap: .45rem; margin: 1rem 0; padding: .9rem; border-radius: .7rem; background: rgba(12,17,23,.38); font-size: .8rem; }
.flash-preflight strong { display: inline-block; min-width: 4.5rem; color: var(--muted); }
.flash-confirmation-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem; }
.flash-confirmation-grid label { margin: 0; }
.flash-confirmation-grid label > span, .flash-confirmation-grid small { display: block; margin-bottom: .4rem; }
.flash-confirmation-grid small { margin-top: .35rem; color: var(--orange); }
.power-confirmation { display: flex; gap: .65rem; align-items: flex-start; margin: 1rem 0; color: var(--text); }
.power-confirmation input { width: auto; margin-top: .15rem; }
.danger-button { color: #fff; background: #a43c3c; border-color: var(--red); }
.flash-progress-wrap { display: grid; grid-template-columns: 1fr auto; gap: .8rem; align-items: center; margin-top: 1rem; }
.flash-progress-wrap progress { width: 100%; height: 1rem; accent-color: var(--cyan); }
.results-message { margin: .8rem 0; }
.status-label { color: var(--muted); font-size: .78rem; font-weight: 800; }
.status-label.running, .status-label.delivered, .status-label.queued { color: var(--orange); }
.status-label.completed { color: var(--green); }
.status-label.failed, .status-label.rejected { color: var(--red); }
.results-table-wrap { overflow-x: auto; }
.results-table { width: 100%; border-collapse: collapse; font-size: .8rem; }
.results-table th, .results-table td { padding: .7rem .55rem; border-top: 1px solid var(--line); text-align: left; vertical-align: top; }
.results-table th { color: var(--muted); font-size: .7rem; text-transform: uppercase; letter-spacing: .06em; }
.results-table .mono { font-family: ui-monospace, monospace; }
.results-table .hex-value { max-width: 25rem; overflow-wrap: anywhere; color: var(--blue); }
.did-state.completed { color: var(--green); }
.did-state.negative-response, .did-state.no-response { color: var(--orange); }
.did-state.failed { color: var(--red); }
.empty.compact { margin: 1rem 0 0; }
.admin-customers-panel { margin-top: 1.5rem; padding: 1.25rem; }
.customer-form {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: .8rem;
  align-items: end;
  margin-top: 1rem;
}
.customer-form label { margin: 0; }
.customer-form label > span { display: block; margin-bottom: .4rem; }
.customer-programming {
  grid-column: span 2;
  display: flex;
  align-items: center;
  gap: .6rem;
  min-height: 2.9rem;
  color: var(--text);
}
.customer-programming input { width: auto; }
.customer-programming span { margin: 0 !important; }
.customer-list { display: grid; gap: .55rem; margin-top: 1rem; }
.customer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: .85rem;
  border: 1px solid var(--line);
  border-radius: .7rem;
  background: rgba(12,17,23,.35);
}
.customer-row strong, .customer-row small { display: block; }
.customer-row small { margin-top: .3rem; color: var(--muted); }
.customer-row-controls { display: flex; align-items: center; gap: .6rem; }
[hidden] { display: none !important; }

@media (max-width: 760px) {
  .topbar { align-items: flex-start; }
  .session-summary { flex-direction: column; align-items: flex-end; }
  .metric-row { grid-template-columns: 1fr 1fr; }
  .lower-grid { grid-template-columns: 1fr; }
  .adapter-controls { grid-template-columns: 1fr; }
  .read-did-controls { grid-template-columns: 1fr 1fr 1fr; }
  .read-did-controls button { grid-column: 1 / -1; }
  .operation-fields { grid-template-columns: 1fr 1fr; }
  .operation-agent-field { grid-column: 1 / -1; }
  .operation-actions { align-items: stretch; flex-direction: column; }
  .firmware-upload-grid, .flash-confirmation-grid { grid-template-columns: 1fr; }
  .customer-form { grid-template-columns: 1fr; }
  .customer-programming { grid-column: auto; }
  .customer-row { align-items: flex-start; flex-direction: column; }
}