:root {
  color-scheme: dark;
  --bg: #0d1018;
  --panel: rgba(17, 21, 33, 0.88);
  --panel-border: rgba(255, 255, 255, 0.09);
  --text: #eef1ff;
  --muted: #97a0c0;
  --accent: #f25f5c;
  --accent-2: #6ee7ff;
  --good: #54d68a;
  --shadow: 0 18px 60px rgba(0, 0, 0, 0.38);
  --radius: 20px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(242, 95, 92, 0.14), transparent 28%),
    radial-gradient(circle at top right, rgba(110, 231, 255, 0.12), transparent 24%),
    linear-gradient(180deg, #0b0e15 0%, #101521 100%);
  color: var(--text);
}

.shell {
  width: min(1200px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 36px;
}

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 20px;
  align-items: start;
  margin-bottom: 20px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.72rem;
  color: var(--accent-2);
  margin: 0 0 8px;
}

h1, h2, h3, p { margin-top: 0; }
h1 { font-size: clamp(2.2rem, 4vw, 4rem); margin-bottom: 10px; }
h2 { font-size: 1.35rem; margin-bottom: 0; }
.lede { max-width: 64ch; color: var(--muted); line-height: 1.6; }

.card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.controls {
  padding: 18px;
  display: grid;
  gap: 16px;
}
.control-group { display: grid; gap: 8px; }
label { font-weight: 600; }
select, button {
  font: inherit;
}
select {
  width: 100%;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(4, 7, 12, 0.7);
  color: var(--text);
  padding: 12px 14px;
}
select[multiple] { min-height: 160px; }
small { color: var(--muted); }

.range-buttons, .actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
button {
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.04);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 120ms ease, background 120ms ease, border-color 120ms ease;
}
button:hover { transform: translateY(-1px); border-color: rgba(255,255,255,0.24); }
button.active, .primary {
  background: linear-gradient(135deg, var(--accent), #ff8f70);
  border-color: transparent;
  color: #fff;
}

.grid {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(280px, 0.8fr);
  gap: 20px;
  align-items: start;
}
.chart-card { padding: 18px; min-height: 560px; }
.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}
.status {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  color: var(--muted);
  font-size: 0.95rem;
}
.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--muted);
  box-shadow: 0 0 0 5px rgba(255,255,255,0.03);
}
.dot.loading { background: #f0c674; }
.dot.good { background: var(--good); }
.dot.bad { background: var(--accent); }

canvas { width: 100% !important; height: 470px !important; }
.column { display: grid; gap: 20px; }
.stat-card { padding: 18px; }
.stat-card h3 { font-size: 2rem; margin-bottom: 8px; }
.stat-card p { color: var(--muted); line-height: 1.6; }
.footer-card { margin-top: 20px; padding: 14px 18px; color: var(--muted); }

@media (max-width: 900px) {
  .hero, .grid { grid-template-columns: 1fr; }
  .chart-card { min-height: 460px; }
  canvas { height: 380px !important; }
}