/* Redesign 2026-07: tema scuro OLED (unico, deliberato: monitoraggio
   notturno in barca), palette per entita' validata contro daltonismo e
   contrasto sul fondo #0B1220. I grafici leggono i token via
   getComputedStyle, quindi i colori delle serie vivono solo qui.

   Richiami 2026-07 (v2) alla UI LVGL/SquareLine dei dispositivi (Home
   screen, ui_comp_cardbg): stesso gradiente verticale sulle card
   (#252541 -> #0F0E1D), stesso bordo accento blu (#1458D6), stesso
   raggio ampio (24px sulle card principali, 10px sulle secondarie) e
   ombra morbida verso il basso. Qui il gradiente/bordo restano un
   overlay sopra i token --surface esistenti, cosi' i grafici e il
   contrasto testo non cambiano. */
:root {
  color-scheme: dark;
  --page:           #0B1220;
  --surface:        #101A2E;
  --surface-2:      #16233C;
  --text-primary:   #E8EDF6;
  --text-secondary: #9FAEC8;
  --text-muted:     #7A8AA6;
  --grid:           #1B2740;
  --axis:           #2C3E5F;
  --border:         #22314E;
  --accent:         #E8A845;   /* ambra "sole": nav attiva, focus */
  --good:           #0ca30c;
  --good-text:      #4ED14E;
  --critical:       #d03b3b;
  --warning:        #fab219;
  /* serie per entita': 1 = pannello/produzione (ambra),
     2 = batteria servizi (verde), 3 = batteria motore (magenta),
     4 = inverter/temperatura (blu) */
  --series-1:       #c98500;
  --series-2:       #008300;
  --series-3:       #d55181;
  --series-4:       #3987e5;

  /* richiami device (SquareLine ui_comp_cardbg / ui_Home) */
  --card-grad-top:    #252541;
  --card-grad-bottom: #0F0E1D;
  --card-accent:      #1458D6;
  --card-radius:      16px;
  --card-radius-lg:   24px;
  --card-shadow:      0 20px 40px -12px rgba(5, 10, 18, 0.55);
}

/* Fira Sans per l'interfaccia, Fira Code per i numeri: self-hosted. */
@font-face {
  font-family: "Fira Sans";
  src: url("../fonts/FiraSans-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Fira Sans";
  src: url("../fonts/FiraSans-SemiBold.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Fira Code";
  src: url("../fonts/FiraCode-Medium.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--page);
  color: var(--text-primary);
  font-family: "Fira Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 14.5px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

/* ---- struttura ---- */
.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 5;
}
.topbar-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.user-box { display: flex; align-items: center; gap: 10px; margin: 0; margin-left: auto; }
.user-name { color: var(--text-secondary); font-size: 13.5px; }
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 16.5px;
}
.brand svg { display: block; }
.topbar nav { display: flex; gap: 4px; }
.topbar nav a {
  color: var(--text-secondary);
  text-decoration: none;
  padding: 7px 14px;
  border-radius: 6px;
  transition: background 0.18s, color 0.18s;
}
.topbar nav a:hover { background: var(--surface-2); color: var(--text-primary); }
.topbar nav a.active {
  background: #1C2A45;
  color: var(--text-primary);
  font-weight: 600;
  box-shadow: inset 0 -2px 0 var(--accent);
}
.brand svg { filter: drop-shadow(0 0 6px rgba(20, 88, 214, 0.55)); }

.nav-toggle-state { display: none; }
.nav-toggle-btn { display: none; }
.nav-user-box { display: none; }

@media (max-width: 720px) {
  .topbar-inner {
    flex-wrap: wrap;
    padding: 10px 16px;
  }
  .nav-toggle-btn {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    width: 32px;
    height: 32px;
    margin-left: auto;
    cursor: pointer;
    border-radius: 6px;
  }
  .nav-toggle-btn span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text-secondary);
    border-radius: 2px;
  }
  .nav-toggle-btn:hover span { background: var(--text-primary); }

  .topbar-user-box { display: none; }

  .topbar nav {
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    order: 3;
    gap: 2px;
    padding-top: 10px;
    margin-top: 10px;
    border-top: 1px solid var(--border);
  }
  .nav-toggle-state:checked ~ .topbar-inner nav {
    display: flex;
  }
  .topbar nav a { padding: 10px 14px; }
  .topbar nav a.active { box-shadow: inset 2px 0 0 var(--accent); }

  .nav-user-box {
    display: flex;
    margin: 6px 0 0;
    padding-top: 10px;
    border-top: 1px solid var(--border);
  }

  .hide-mobile { display: none; }
}

.page {
  max-width: 1240px;
  margin: 0 auto;
  padding: 24px 20px 48px;
}

h1 { font-size: 22px; font-weight: 700; letter-spacing: -0.01em; margin: 0 0 2px; text-wrap: balance; }
.subtitle { color: var(--text-muted); font-size: 13px; margin: 0 0 20px; }

/* ---- riga filtri (unica, sopra i contenuti) ---- */
.filters {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.range-group {
  display: inline-flex;
  gap: 2px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 3px;
}
.range-group button {
  border: 0;
  background: transparent;
  color: var(--text-secondary);
  font: inherit;
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.18s, color 0.18s;
}
.range-group button:hover { background: var(--surface-2); color: var(--text-primary); }
.range-group button.selected {
  background: #243459;
  color: var(--text-primary);
  font-weight: 600;
}
.filters select, .filters input {
  background: var(--surface);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 12px;
  font: inherit;
  font-size: 13px;
}

/* ---- KPI ---- */
.kpi-row {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 10px;
  margin-bottom: 10px;
}
@media (max-width: 480px) {
  .kpi-row { grid-template-columns: repeat(2, 1fr); }
}
.tile {
  background: linear-gradient(180deg, var(--card-grad-top), var(--card-grad-bottom));
  border: 1px solid var(--card-accent);
  border-radius: var(--card-radius);
  padding: 12px 14px 10px;
  box-shadow: var(--card-shadow);
  transition: border-color 0.18s, transform 0.18s;
}
.tile:hover { border-color: #2E7BF0; transform: translateY(-1px); }
.tile .label {
  color: var(--text-muted);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.tile .value {
  font-family: "Fira Code", "Cascadia Mono", Consolas, monospace;
  font-weight: 500;
  font-size: 24px;
  font-variant-numeric: tabular-nums;
  line-height: 1.3;
  margin-top: 2px;
}
.tile .value .unit { font-size: 13px; color: var(--text-secondary); margin-left: 2px; }
.tile .hint { color: var(--text-muted); font-size: 12px; margin-top: 2px; }

/* ---- card grafici ---- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 10px;
}
@media (max-width: 840px) {
  .grid-2 { grid-template-columns: 1fr; }
}
.card {
  background: linear-gradient(180deg, var(--card-grad-top), var(--card-grad-bottom));
  border: 1px solid var(--card-accent);
  border-radius: var(--card-radius-lg);
  padding: 16px 18px;
  min-width: 0;
  box-shadow: var(--card-shadow);
}
.card h2 { font-size: 14px; font-weight: 600; margin: 0 0 10px; }
.card .chart-wrap { position: relative; height: 240px; }

/* ---- tabelle ---- */
.table-wrap { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  font-family: "Fira Code", "Cascadia Mono", Consolas, monospace;
  font-size: 12.5px;
  font-variant-numeric: tabular-nums;
}
th {
  text-align: left;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
td {
  padding: 7px 10px;
  border-bottom: 1px solid var(--grid);
  white-space: nowrap;
  color: var(--text-secondary);
}
td:first-child { color: var(--text-primary); }
tr:hover td { background: var(--surface-2); }
td.num, th.num { text-align: right; }

/* ---- badge di stato (icona + etichetta, mai solo colore) ---- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  font-weight: 600;
}
.badge::before { content: ""; width: 8px; height: 8px; border-radius: 50%; }
.badge.online  { color: var(--good-text); }
.badge.online::before  { background: var(--good); box-shadow: 0 0 8px rgba(12, 163, 12, 0.5); }
.badge.offline { color: var(--text-muted); }
.badge.offline::before { background: var(--text-muted); }

.level { font-weight: 600; font-size: 12px; }
.level.ERROR { color: var(--critical); }
.level.WARN  { color: var(--warning); }
.level.INFO  { color: var(--text-secondary); }
.level.DEBUG { color: var(--text-muted); }

/* ---- avvisi ---- */
.notice {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--warning);
  border-radius: var(--card-radius);
  padding: 14px 16px;
  margin-bottom: 20px;
}
.notice code {
  background: var(--surface-2);
  border-radius: 4px;
  padding: 1px 5px;
  font-family: "Fira Code", "Cascadia Mono", Consolas, monospace;
  font-size: 12px;
}
.notice-ok { border-left-color: var(--good-text); }
.empty {
  color: var(--text-muted);
  text-align: center;
  padding: 32px 0;
}

/* refetch: i grafici tengono il render precedente a opacita' ridotta */
.loading .card, .loading .kpi-row { opacity: 0.5; transition: opacity 0.15s; }

/* finestra di enrollment (pagina Dispositivi) */
.enroll-row { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.enroll-actions { display: inline-flex; gap: 8px; }
.btn {
  background: var(--surface-2);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 6px 14px;
  font: inherit;
  font-size: 13.5px;
  cursor: pointer;
  transition: border-color 0.18s, background 0.18s, box-shadow 0.18s;
}
.btn:hover { border-color: var(--card-accent); background: #1C2A45; box-shadow: 0 0 0 3px rgba(20, 88, 214, 0.18); }
.btn:disabled { opacity: 0.45; cursor: default; }
.btn-danger { color: #E66767; border-color: var(--critical); }
.btn-small { padding: 3px 10px; font-size: 12.5px; }
a.btn { display: inline-block; text-decoration: none; }
a.btn.btn-disabled { opacity: 0.35; cursor: default; pointer-events: none; }

/* paginazione (pagina Log) */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin: 14px 0;
}
.page-indicator { color: var(--text-secondary); font-size: 13px; }

/* login social (pagina Account/Login) */
.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  margin: 0;
  background: var(--page);
  font-family: "Fira Sans", sans-serif;
}
.login-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  width: 320px;
  padding: 32px 28px;
  background: linear-gradient(180deg, var(--card-grad-top), var(--card-grad-bottom));
  border: 1px solid var(--card-accent);
  border-radius: var(--card-radius-lg);
  box-shadow: var(--card-shadow);
}
.login-card .brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
}
.login-card .subtitle { margin: 0 0 20px; color: var(--text-secondary); font-size: 13.5px; }
.login-card form { display: flex; flex-direction: column; gap: 10px; width: 100%; }
.login-btn {
  width: 100%;
  padding: 10px 16px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text-primary);
  font: inherit;
  font-size: 14px;
  cursor: pointer;
  transition: border-color 0.18s, background 0.18s;
}
.login-btn:hover { border-color: var(--axis); background: #1C2A45; }
.login-btn-google:hover { border-color: #4285F4; }
.login-btn-microsoft:hover { border-color: #00A4EF; }

/* abbinamento dispositivo (pagina Devices/Claim) */
.pairing-form { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.pairing-form input[type="text"] {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font: inherit;
  font-size: 20px;
  letter-spacing: 4px;
  padding: 8px 14px;
  width: 160px;
  text-align: center;
}
.pairing-form input[type="text"]:focus { outline: 2px solid var(--accent); border-color: transparent; }
.device-actions { display: inline-flex; gap: 6px; white-space: nowrap; }