:root {
  --bg: #0b1020;
  --card: rgba(20, 29, 55, 0.8);
  --muted: #9fb0d1;
  --text: #e5ecff;
  --accent: #63b3ff;
  --accent-strong: #2f80ed;
  --border: rgba(125, 160, 230, 0.3);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top right, #1c2f5a, var(--bg) 50%);
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 0.75rem 1.5rem;
  display: grid;
  gap: 0.65rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 0.9rem;
  backdrop-filter: blur(6px);
  box-shadow: 0 10px 30px rgba(5, 10, 22, 0.25);
}

.hero {
  text-align: center;
}

.hero h1 {
  margin: 0.2rem 0 0;
}

.tag {
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 700;
  margin: 0;
}

.controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.8rem;
  align-items: end;
}

.field {
  display: grid;
  gap: 0.4rem;
}

label {
  font-size: 0.85rem;
  color: var(--muted);
}

input,
button {
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(8, 14, 28, 0.7);
  color: var(--text);
  padding: 0.7rem 0.8rem;
  font-size: 0.95rem;
}

input:focus,
button:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

button {
  cursor: pointer;
  background: linear-gradient(120deg, var(--accent-strong), #5aa4ff);
  font-weight: 600;
  border: 0;
}

.status p,
.hero p,
.matrix-header p {
  color: var(--muted);
  margin: 0;
}

.matrix table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 0.6rem;
}

.matrix th,
.matrix td {
  padding: 0.7rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.matrix th {
  color: var(--accent);
  font-weight: 600;
}

.charts-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.65rem;
}

.chart {
  width: 100%;
  height: 220px;
}

@media (min-width: 980px) {
  .charts-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .chart {
    height: 250px;
  }
}