:root {
  --bg: #f4f6fb;
  --surface: #ffffff;
  --surface-soft: #f8fbff;
  --text: #172033;
  --muted: #667085;
  --line: #d9e2ef;
  --soft: #eef4fb;
  --primary: #1976d2;
  --primary-dark: #0d47a1;
  --accent: #ff8a3d;
  --accent-2: #1976d2;
  --shadow: 0 10px 28px rgba(15, 23, 42, .11);
  --shadow-strong: 0 22px 55px rgba(15, 23, 42, .14);
}

html, body {
  margin: 0;
  padding: 0;
  background: radial-gradient(circle at 10% 0%, rgba(25,118,210,.16), transparent 34rem), radial-gradient(circle at 90% 5%, rgba(255,138,61,.14), transparent 28rem), var(--bg);
  color: var(--text);
  font-family: Roboto, Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
}

* { box-sizing: border-box; }

.app-shell {
  max-width: 1280px;
  margin: 0 auto;
  padding: 28px 24px 34px;
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-end;
  margin-bottom: 22px;
  padding: 8px 2px 0;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--primary);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1;
  letter-spacing: -0.045em;
}

.subtitle {
  margin: 10px 0 0;
  max-width: 760px;
  color: var(--muted);
  font-size: 16px;
}

.status-card {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 260px;
  padding: 14px 16px;
  background: rgba(255,255,255,.88);
  border: 1px solid rgba(216,226,239,.9);
  border-radius: 16px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.status-card strong,
.status-card span:not(.status-dot) {
  display: block;
}

.status-card strong { font-size: 13px; }
.status-card span:not(.status-dot) { color: var(--muted); font-size: 12px; margin-top: 3px; }

.status-dot {
  width: 12px;
  height: 12px;
  border-radius: 99px;
  background: #d5dbe5;
  box-shadow: 0 0 0 5px rgba(213,219,229,.35);
  flex: none;
}
.status-dot.online { background: #20b26b; box-shadow: 0 0 0 5px rgba(32,178,107,.14); }
.status-dot.warn { background: #f39c35; box-shadow: 0 0 0 5px rgba(243,156,53,.15); }

.control-card,
.graph-card,
.table-card {
  background: rgba(255,255,255,.94);
  border: 1px solid rgba(216,222,232,.95);
  border-radius: 22px;
  box-shadow: var(--shadow);
}

.control-card {
  padding: 18px;
  margin-bottom: 18px;
}

.control-grid {
  display: grid;
  grid-template-columns: 140px 220px minmax(0, 1fr);
  gap: 18px;
  align-items: end;
}

.field > span,
.range-head span,
.filter-group > span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .06em;
  text-transform: uppercase;
}

select,
input[type="search"] {
  width: 100%;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  color: var(--text);
  font-size: 15px;
  font-weight: 800;
  padding: 0 12px;
  outline: none;
}

input[type="search"] {
  font-weight: 700;
}

input[type="search"]::placeholder {
  color: #9aa5b6;
  font-weight: 600;
}

.range-head {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: center;
}

.range-head strong {
  color: var(--accent);
  font-size: 14px;
}

.double-range {
  position: relative;
  height: 42px;
  padding-top: 12px;
}

.slider-track,
.slider-selection {
  position: absolute;
  top: 20px;
  height: 8px;
  border-radius: 999px;
}
.slider-track { left: 0; right: 0; background: #e5ecf6; border: 1px solid #d0d9e7; }
.slider-selection { background: linear-gradient(90deg, var(--primary), var(--accent)); }

.double-range input[type="range"] {
  position: absolute;
  left: 0;
  top: 13px;
  width: 100%;
  margin: 0;
  appearance: none;
  background: none;
  pointer-events: none;
}
.double-range input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 20px;
  height: 20px;
  border: 3px solid #fff;
  background: var(--accent);
  border-radius: 999px;
  pointer-events: auto;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(255,138,61,.38);
}
.double-range input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border: 3px solid #fff;
  background: var(--accent);
  border-radius: 999px;
  pointer-events: auto;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(255,138,61,.38);
}
.double-range input[type="range"]::-webkit-slider-runnable-track,
.double-range input[type="range"]::-moz-range-track { background: transparent; }

.filter-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 16px;
}

.filter-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px;
  background: var(--soft);
  border-radius: 16px;
}
.filter-group > span { margin: 0 8px 0 0; }
.filter-group label {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 9px;
  background: #fff;
  border: 1px solid #dce4ef;
  border-radius: 999px;
  color: #384256;
  font-size: 13px;
  font-weight: 700;
}
.filter-group input { accent-color: var(--accent); }

.graph-card,
.table-card {
  padding: 18px;
}

.table-card {
  margin-top: 18px;
}

.graph-title-row,
.table-title-row {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: start;
  margin-bottom: 12px;
}
.graph-title-row h2,
.table-title-row h2 { margin: 0; font-size: 20px; letter-spacing: -.02em; }
.graph-title-row p,
.table-title-row p { margin: 5px 0 0; color: var(--muted); font-size: 14px; }
.stats {
  padding: 9px 12px;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  border-radius: 999px;
  font-size: 12px;
  white-space: nowrap;
}

.canvas-wrap {
  position: relative;
  overflow: hidden;
  border-radius: 16px;
  border: 1px solid #cfd8e5;
  background: #eef4f8;
}

#graphCanvas {
  display: block;
  width: 100%;
  height: 500px;
  background: #eef4f8;
}

.tooltip {
  position: absolute;
  min-width: 200px;
  padding: 10px 12px;
  background: rgba(255,255,255,.97);
  border: 1px solid #d3dbe7;
  border-radius: 12px;
  box-shadow: 0 12px 30px rgba(18,32,54,.16);
  font-size: 12px;
  line-height: 1.45;
  pointer-events: none;
  z-index: 20;
}
.tooltip::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -8px;
  transform: translateX(-50%);
  border-width: 8px 7px 0 7px;
  border-style: solid;
  border-color: rgba(255,255,255,.97) transparent transparent transparent;
}
.hidden { display: none; }

.table-wrap {
  width: 100%;
  overflow: auto;
  border: 1px solid #d5deea;
  border-radius: 16px;
  background: #fff;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 980px;
  font-size: 13px;
}

th, td {
  padding: 10px 12px;
  border-bottom: 1px solid #edf1f6;
  text-align: left;
  white-space: nowrap;
}

th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: #f7faff;
  color: #596477;
  font-size: 11px;
  letter-spacing: .06em;
  text-transform: uppercase;
}

tbody tr:hover {
  background: #fff4ea;
}

.mode-pill {
  display: inline-block;
  min-width: 48px;
  padding: 4px 8px;
  border-radius: 999px;
  color: #fff;
  font-size: 11px;
  font-weight: 800;
  text-align: center;
}

.empty-cell {
  text-align: center;
  color: var(--muted);
  padding: 24px 12px;
}

@media (max-width: 860px) {
  .hero,
  .graph-title-row,
.table-title-row { flex-direction: column; align-items: stretch; }
  .control-grid,
  .filter-grid { grid-template-columns: 1fr; }
  .status-card { min-width: 0; }
  #graphCanvas { height: 430px; }
}

.muted {
  color: var(--muted);
  font-size: 12px;
}