:root {
  --bg: #0c0e12;
  --bg-raised: #14171d;
  --bg-panel: #181b22;
  --bg-input: #0f1116;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #e8eaee;
  --text-dim: #8b93a1;
  --text-faint: #5a6172;
  --amber: #f2a900;
  --amber-bright: #ffc233;
  --amber-dim: rgba(242, 169, 0, 0.14);
  --green: #3ddc84;
  --red: #ff5c5c;
  --status-good: #0ca30c;
  --status-critical: #d03b3b;
  --status-critical-text: #e88686;
  --status-warning: #fab219;
  --viz-series: #3987e5;
  --radius: 10px;
  --font-ui: "Segoe UI", "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "Consolas", "JetBrains Mono", ui-monospace, "SF Mono", monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  min-height: 100vh;
}

body {
  background-image:
    radial-gradient(circle at 15% -10%, rgba(242, 169, 0, 0.05), transparent 40%),
    radial-gradient(circle at 85% 0%, rgba(61, 220, 132, 0.03), transparent 35%);
}

/* ---------- Topbar ---------- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 32px;
  background: linear-gradient(180deg, var(--bg-raised), var(--bg));
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background: linear-gradient(145deg, #1e222b, #12141a);
  border: 1px solid var(--border-strong);
  color: var(--amber);
  font-weight: 700;
  font-family: var(--font-mono);
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0.5px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.06), 0 0 18px rgba(242,169,0,0.08);
}

.brand-text h1 {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.2px;
}

.brand-text p {
  margin: 2px 0 0;
  font-size: 12.5px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.6px;
}

.status-strip {
  display: flex;
  align-items: center;
  gap: 22px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-dim);
}

.status-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.clock {
  color: var(--text-faint);
  min-width: 72px;
}

.led {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--text-faint);
  box-shadow: 0 0 6px rgba(0,0,0,0.4);
  display: inline-block;
}

.led.on {
  background: var(--green);
  box-shadow: 0 0 8px rgba(61, 220, 132, 0.9), 0 0 2px rgba(61, 220, 132, 1);
}

.led.off {
  background: var(--red);
  box-shadow: 0 0 8px rgba(255, 92, 92, 0.9);
}

.hazard-rule {
  height: 3px;
  background: repeating-linear-gradient(
    -45deg,
    var(--amber) 0 10px,
    #1a1d24 10px 20px
  );
  opacity: 0.55;
}

/* ---------- Layout ---------- */

main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 36px 32px 64px;
}

/* ---------- Search panel ---------- */

.search-panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 28px 24px;
  margin-bottom: 28px;
  box-shadow: 0 1px 0 rgba(255,255,255,0.03) inset, 0 12px 30px -20px rgba(0,0,0,0.6);
}

.search-label {
  display: block;
  font-size: 12.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-dim);
  margin-bottom: 12px;
}

.search-row {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-input);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  padding: 4px 4px 4px 16px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.search-row:focus-within {
  border-color: var(--amber);
  box-shadow: 0 0 0 3px var(--amber-dim);
}

.search-icon {
  width: 20px;
  height: 20px;
  color: var(--text-faint);
  flex-shrink: 0;
}

#serialInput {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 20px;
  letter-spacing: 1px;
  padding: 14px 0;
}

#serialInput::placeholder {
  color: var(--text-faint);
  letter-spacing: 0.3px;
}

.primary-btn {
  background: linear-gradient(180deg, var(--amber-bright), var(--amber));
  color: #241a00;
  border: none;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  padding: 14px 26px;
  border-radius: 6px;
  cursor: pointer;
  transition: filter 0.15s ease, transform 0.05s ease;
}

.primary-btn:hover { filter: brightness(1.08); }
.primary-btn:active { transform: translateY(1px); }

.hint {
  margin: 12px 2px 0;
  font-size: 12.5px;
  color: var(--text-faint);
}

/* ---------- Results panel ---------- */

.results-panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  border-bottom: 1px solid var(--border);
}

.panel-header h2 {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-dim);
}

.count-badge {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--amber);
  background: var(--amber-dim);
  border: 1px solid rgba(242, 169, 0, 0.3);
  border-radius: 20px;
  padding: 3px 11px;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

thead th {
  text-align: left;
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-faint);
  font-weight: 600;
  padding: 10px 22px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

tbody td {
  padding: 13px 22px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  white-space: nowrap;
}

tbody tr {
  cursor: pointer;
  transition: background 0.1s ease;
}

tbody tr:hover {
  background: rgba(242, 169, 0, 0.06);
}

tbody tr:last-child td {
  border-bottom: none;
}

td.serial-cell {
  font-family: var(--font-mono);
  color: var(--amber-bright);
  font-weight: 600;
}

td.dim { color: var(--text-dim); }

.empty-state, .loading-state {
  padding: 40px 22px;
  text-align: center;
  color: var(--text-faint);
  font-size: 13.5px;
}

/* ---------- Drawer ---------- */

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(2px);
  z-index: 10;
}

.drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(720px, 94vw);
  background: var(--bg-raised);
  border-left: 1px solid var(--border-strong);
  z-index: 20;
  flex-direction: column;
  box-shadow: -20px 0 60px -20px rgba(0,0,0,0.7);
  animation: slideIn 0.18s ease-out;
}

/* [hidden] only wins the cascade when no author rule sets `display` on the
   same element - scope `display: flex` to the visible state so it doesn't
   fight the hidden attribute. */
.drawer:not([hidden]) {
  display: flex;
}

@keyframes slideIn {
  from { transform: translateX(24px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.drawer-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 24px 24px 20px;
  border-bottom: 1px solid var(--border);
}

.drawer-eyebrow {
  margin: 0 0 4px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-faint);
}

.drawer-header h2 {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 22px;
  color: var(--amber-bright);
}

.icon-btn {
  background: transparent;
  border: 1px solid var(--border-strong);
  color: var(--text-dim);
  width: 32px;
  height: 32px;
  border-radius: 6px;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
}

.icon-btn:hover { color: var(--text); border-color: var(--text-dim); }

.drawer-body {
  padding: 22px 24px 28px;
  overflow-y: auto;
  flex: 1;
}

.spec-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 18px;
  margin-bottom: 24px;
}

.spec-item {
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
}

.spec-item.full { grid-column: 1 / -1; }

.spec-label {
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-faint);
  margin-bottom: 4px;
}

.spec-value {
  font-family: var(--font-mono);
  font-size: 14.5px;
  color: var(--text);
  word-break: break-word;
}

.spec-value.empty { color: var(--text-faint); }

.download-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: linear-gradient(180deg, var(--amber-bright), var(--amber));
  color: #241a00;
  border: none;
  font-weight: 700;
  font-size: 14.5px;
  letter-spacing: 0.3px;
  padding: 16px;
  border-radius: 8px;
  cursor: pointer;
  box-shadow: 0 8px 24px -8px rgba(242, 169, 0, 0.45);
  transition: filter 0.15s ease, transform 0.05s ease;
}

.download-btn svg {
  width: 18px;
  height: 18px;
}

.download-btn:hover { filter: brightness(1.06); }
.download-btn:active { transform: translateY(1px); }

.download-hint {
  margin: 10px 2px 22px;
  font-size: 12px;
  color: var(--text-faint);
  line-height: 1.5;
}

.download-hint code {
  font-family: var(--font-mono);
  color: var(--text-dim);
}

.ghost-btn {
  width: 100%;
  background: transparent;
  border: 1px solid var(--border-strong);
  color: var(--text-dim);
  font-size: 13px;
  padding: 12px;
  border-radius: 8px;
  cursor: pointer;
}

.ghost-btn:hover { color: var(--text); border-color: var(--text-dim); }

.raw-config {
  margin-top: 16px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 360px;
  overflow-y: auto;
}

/* ---------- Tabs ---------- */

.tab-bar {
  display: flex;
  gap: 4px;
  padding: 14px 32px 0;
  max-width: 1080px;
  margin: 0 auto;
}

.tab-btn {
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-dim);
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.2px;
  padding: 10px 16px;
  cursor: pointer;
}

.tab-btn:hover { color: var(--text); }

.tab-btn.active {
  color: var(--amber-bright);
  border-bottom-color: var(--amber);
}

/* ---------- KPI tiles ---------- */

.kpi-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.kpi-tile {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}

.kpi-label {
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-faint);
  margin-bottom: 8px;
}

.kpi-value {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 600;
  color: var(--text);
}

.kpi-value.good { color: var(--status-good); }
.kpi-value.critical { color: var(--status-critical); }

/* ---------- Filter row ---------- */

.filter-row {
  display: flex;
  gap: 12px;
}

.search-row.grow { flex: 1; }

.result-filter {
  background: var(--bg-input);
  border: 1px solid var(--border-strong);
  color: var(--text);
  font-size: 14px;
  padding: 0 14px;
  border-radius: 8px;
  cursor: pointer;
}

/* ---------- Badges ---------- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.3px;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 20px;
  border: 1px solid transparent;
}

.badge.good {
  color: var(--status-good);
  background: rgba(12, 163, 12, 0.14);
  border-color: rgba(12, 163, 12, 0.35);
}

.badge.critical {
  color: var(--status-critical-text);
  background: rgba(208, 59, 59, 0.16);
  border-color: rgba(208, 59, 59, 0.4);
}

.badge.warning {
  color: var(--status-warning);
  background: rgba(250, 178, 25, 0.14);
  border-color: rgba(250, 178, 25, 0.35);
}

/* ---------- Result banner (session drawer) ---------- */

.result-banner { margin-bottom: 20px; }

.result-banner-head { margin-bottom: 8px; }

.fail-list {
  margin: 0;
  padding: 12px 16px;
  background: rgba(208, 59, 59, 0.08);
  border: 1px solid rgba(208, 59, 59, 0.25);
  border-radius: 8px;
  color: var(--text);
  font-size: 13px;
  line-height: 1.6;
}

/* ---------- Chart ---------- */

.chart-card {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 16px 8px;
  margin: 20px 0;
}

.chart-card-header h3 {
  margin: 0 0 8px;
  font-size: 12.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--text-dim);
}

.viz-root {
  position: relative;
}

.viz-svg {
  width: 100%;
  height: auto;
  overflow: visible;
}

.viz-grid { stroke: var(--border); stroke-width: 1; }
.viz-axis { stroke: var(--border-strong); stroke-width: 1; }
.viz-tick { fill: var(--text-faint); font-size: 10px; font-family: var(--font-mono); }
.viz-axis-label { fill: var(--text-faint); font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.4px; }

.viz-line {
  stroke: var(--viz-series);
  stroke-width: 2;
  stroke-linejoin: round;
  stroke-linecap: round;
}

.viz-dot {
  fill: var(--viz-series);
  stroke: var(--bg-input);
  stroke-width: 2;
}

.viz-dot.hovered {
  r: 6;
  stroke: var(--text);
}

.viz-hit {
  fill: transparent;
  cursor: crosshair;
}

.viz-crosshair {
  stroke: var(--border-strong);
  stroke-width: 1;
  stroke-dasharray: 3 3;
}

.viz-target-dot {
  fill: var(--amber);
  stroke: var(--bg-input);
  stroke-width: 2;
}

.viz-target-label {
  fill: var(--amber-bright);
  font-size: 10.5px;
  font-weight: 600;
}

.viz-tooltip {
  position: absolute;
  min-width: 140px;
  background: var(--bg-raised);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  padding: 10px 12px;
  box-shadow: 0 12px 28px -12px rgba(0,0,0,0.7);
  pointer-events: none;
}

.viz-tooltip-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  font-size: 12px;
  padding: 2px 0;
}

.viz-tooltip-label { color: var(--text-faint); }
.viz-tooltip-value {
  color: var(--text);
  font-family: var(--font-mono);
  font-weight: 600;
}

/* ---------- Points table ---------- */

.points-table-wrap {
  margin: 20px 0;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.points-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 11.5px;
}

.points-table th {
  text-align: left;
  font-family: var(--font-ui);
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--text-faint);
  padding: 9px 10px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.points-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  color: var(--text-dim);
  white-space: nowrap;
}

.points-table tr:last-child td { border-bottom: none; }

@media (max-width: 640px) {
  .topbar { padding: 16px 18px; }
  .status-strip { display: none; }
  main { padding: 22px 16px 48px; }
  .spec-grid { grid-template-columns: 1fr; }
  .kpi-row { grid-template-columns: repeat(2, 1fr); }
  .filter-row { flex-direction: column; }
  .tab-bar { padding: 14px 16px 0; }
}