/* Palette ispirata a tecnoenergia.trentino.it (blu marchio) + metodo
   dataviz standard per grafici/accessibilita'. */

.viz-root, .login-page {
  --surface-1:      #fcfcfb;
  --page-plane:     #f4f6f9;
  --text-primary:   #0b0b0b;
  --text-secondary: #52514e;
  --muted:          #898781;
  --gridline:       #e1e0d9;
  --baseline:       #c3c2b7;
  --border:         rgba(11,11,11,0.10);

  --brand-navy:     #003e7e;
  --brand-blue:     #0c4da2;
  --brand-sky:      #2ea3f2;

  --series-1: #0c4da2; /* blu (marchio) */
  --series-2: #1baf7a; /* aqua */
  --series-3: #eda100; /* giallo */
  --series-4: #008300; /* verde */
  --series-5: #4a3aa7; /* violetto */
  --series-6: #e34948; /* rosso */
  --series-7: #e87ba4; /* magenta */
  --series-8: #eb6834; /* arancio */

  --status-good: #0ca30c;
  --status-warning: #fab219;
  --status-serious: #ec835a;
  --status-critical: #d03b3b;

  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--text-primary);
  background: var(--page-plane);
}

@media (prefers-color-scheme: dark) {
  .viz-root, .login-page {
    --surface-1:      #1a1a19;
    --page-plane:     #0d0d0d;
    --text-primary:   #ffffff;
    --text-secondary: #c3c2b7;
    --muted:          #898781;
    --gridline:       #2c2c2a;
    --baseline:       #383835;
    --border:         rgba(255,255,255,0.10);

    --series-1: #3987e5;
    --series-2: #199e70;
    --series-3: #c98500;
    --series-4: #008300;
    --series-5: #9085e9;
    --series-6: #e66767;
    --series-7: #d55181;
    --series-8: #d95926;
  }
}

* { box-sizing: border-box; }
body { margin: 0; }

/* ---------- Login ---------- */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}
.login-card {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px 36px;
  width: 320px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.08);
  text-align: center;
}
.login-logo { height: 32px; margin-bottom: 16px; }
.login-card h1 { font-size: 18px; margin: 0 0 4px; color: var(--brand-navy); }
.login-subtitle { color: var(--text-secondary); font-size: 13px; margin: 0 0 20px; }
.login-card label {
  display: block;
  text-align: left;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 14px;
}
.login-card input {
  display: block;
  width: 100%;
  margin-top: 4px;
  padding: 9px 10px;
  border: 1px solid var(--baseline);
  border-radius: 6px;
  font-size: 14px;
  background: var(--surface-1);
  color: var(--text-primary);
}
.login-card button {
  width: 100%;
  padding: 10px;
  border: none;
  border-radius: 6px;
  background: var(--brand-blue);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 6px;
}
.login-card button:hover { background: var(--brand-navy); }
.login-error {
  background: rgba(208,59,59,0.08);
  color: var(--status-critical);
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 13px;
  margin-bottom: 14px;
}

/* ---------- Top bar ---------- */
.topbar {
  background: var(--brand-navy);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
}
.topbar-brand { display: flex; align-items: center; gap: 14px; }
.topbar-logo { height: 28px; filter: brightness(0) invert(1); }
.topbar h1 { font-size: 17px; margin: 0; }
.topbar-subtitle { font-size: 12px; margin: 2px 0 0; color: rgba(255,255,255,0.75); }
.topbar-status { display: flex; align-items: center; gap: 18px; font-size: 13px; }
.last-update { color: rgba(255,255,255,0.85); }
.topbar-user a { color: #fff; text-decoration: underline; }
.plant-select {
  background: rgba(255,255,255,0.12);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 13px;
}
.plant-select option { color: var(--text-primary); }

/* ---------- Layout ---------- */
.dashboard { padding: 24px; max-width: 1280px; margin: 0 auto; }

/* ---------- KPI tiles ---------- */
.kpi-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}
.kpi-tile {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
}
.kpi-label {
  font-size: 12px;
  color: var(--text-secondary);
  margin: 0 0 6px;
}
.kpi-value {
  font-size: 26px;
  font-weight: 600;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}
.kpi-unit {
  font-size: 13px;
  color: var(--muted);
  margin-left: 4px;
  font-weight: 400;
}
.kpi-tile.status-good .kpi-value { color: var(--status-good); }
.kpi-tile.status-warning .kpi-value { color: var(--status-warning); }
.kpi-tile.status-critical .kpi-value { color: var(--status-critical); }

/* ---------- Range controls ---------- */
.range-controls { display: flex; gap: 8px; margin-bottom: 16px; }
.range-btn {
  background: var(--surface-1);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  cursor: pointer;
}
.range-btn.active {
  background: var(--brand-blue);
  border-color: var(--brand-blue);
  color: #fff;
  font-weight: 600;
}

/* ---------- Charts ---------- */
.chart-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.chart-card {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
}
.chart-card-wide { grid-column: 1 / -1; }
.chart-card h2 {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0 0 10px;
  font-weight: 600;
}
/* Altezza fissata esplicitamente: Chart.js con maintainAspectRatio:false
   richiede un contenitore di dimensione definita in CSS, altrimenti il
   canvas puo' crescere ad ogni redraw (bug noto senza questo vincolo). */
.chart-canvas-wrap {
  position: relative;
  height: 260px;
}
.chart-canvas-wrap-sm {
  height: 200px;
}

.no-js-note {
  text-align: center;
  color: var(--muted);
  margin-top: 40px;
}

@media (max-width: 800px) {
  .chart-grid { grid-template-columns: 1fr; }
  .chart-card-wide { grid-column: auto; }
  .topbar { flex-direction: column; align-items: flex-start; gap: 8px; }
}