/*
 * style.css — stile minimale della dashboard.
 * Niente framework: font di sistema, una manciata di token, card + tabelle.
 * Tema neutro chiaro: la dashboard è uno strumento, non deve gridare.
 */

:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --border: #e3e6ea;
  --text: #1a1d21;
  --muted: #6b7280;
  --accent: #2563eb;
  --danger: #dc2626;
  --radius: 10px;
  --space: 16px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.06);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.45;
  font-size: 14px;
}

h1 { font-size: 18px; margin: 0; }
h2 { font-size: 14px; margin: 0 0 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }

/* === Barra superiore: token + filtri === */
.topbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  padding: 12px var(--space);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar .spacer { flex: 1; }

label { font-size: 12px; color: var(--muted); display: inline-flex; gap: 6px; align-items: center; }

input, select, button {
  font: inherit;
  font-size: 13px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
}

input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: -1px; }

button {
  cursor: pointer;
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
button:hover { opacity: .92; }
button.ghost { background: transparent; color: var(--accent); }

/* === Layout pagina === */
main { padding: var(--space); max-width: 1100px; margin: 0 auto; }
section { margin-bottom: 28px; }

/* === KPI cards === */
.kpis {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}
.card .value { font-size: 26px; font-weight: 650; }
.card .key { font-size: 12px; color: var(--muted); margin-top: 2px; }

/* === Tabelle === */
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
th { font-size: 11px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: #f3f5f8; }

/* === Heatmap viewer === */
.hm-controls { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-bottom: 12px; }
.hm-stage {
  position: relative;
  background: #fafbfc;
  border: 1px dashed var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.hm-stage canvas { display: block; width: 100%; height: auto; }

/* === Stati e messaggi === */
.muted { color: var(--muted); }
.empty { color: var(--muted); font-style: italic; padding: 12px 0; }
.error { color: var(--danger); }
.banner {
  display: none;
  padding: 10px var(--space);
  background: #fef2f2;
  color: var(--danger);
  border-bottom: 1px solid #fecaca;
}
.banner.show { display: block; }