:root{
  --bg:#eef3f6; --card:#ffffff; --ink:#0f1c26; --muted:#5a6b78; --line:#d5dfe6;
  --brand:#0d3b56; --brand-ink:#ffffff; --accent:#0f7aa8;
  --red:#d62828; --white-buoy:#ffffff; --ok:#1f9d55; --warn:#d98e04; --bad:#c0392b;
  --sel:#0d3b56; --sel-ink:#fff;
  --radius:16px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#071520; --card:#0f2433; --ink:#eaf2f7; --muted:#93a8b7; --line:#21394a;
    --brand:#0a2d42; --accent:#4fb8e6; --sel:#4fb8e6; --sel-ink:#04121b;
    color-scheme: dark;
  }
}
:root[data-theme="dark"]{
  --bg:#071520; --card:#0f2433; --ink:#eaf2f7; --muted:#93a8b7; --line:#21394a;
  --brand:#0a2d42; --accent:#4fb8e6; --sel:#4fb8e6; --sel-ink:#04121b;
  color-scheme: dark;
}

*{box-sizing:border-box}
html,body{margin:0}
body{
  background:var(--bg); color:var(--ink);
  font:16px/1.45 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  padding-bottom:calc(74px + env(safe-area-inset-bottom));
  -webkit-tap-highlight-color:transparent;
}
button{font:inherit;color:inherit;cursor:pointer}

/* header */
.top{
  position:sticky;top:0;z-index:5;display:flex;align-items:center;justify-content:space-between;gap:8px;
  background:var(--brand);color:var(--brand-ink);
  padding:calc(10px + env(safe-area-inset-top)) 16px 10px;
}
.brand{display:flex;align-items:center;gap:10px}
.brand{min-width:0}
.brand strong{display:block;font-size:17px;line-height:1.15;white-space:nowrap}
.brand small{display:block;opacity:.75;font-size:12px;white-space:nowrap}
.brand svg{flex:none}
.top-actions{display:flex;gap:6px}
.chip{background:rgba(255,255,255,.14);border:0;border-radius:999px;padding:6px 11px;font-size:13px;color:#fff;white-space:nowrap}
.chip.on{background:#f2b705;color:#1b1b1b}

main{max-width:640px;margin:0 auto;padding:14px 16px}
.tab{display:none}
.tab.active{display:block}

.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin-bottom:14px}
.label{color:var(--muted);text-transform:uppercase;letter-spacing:.06em;font-size:12px;font-weight:600}
.link{background:none;border:0;color:var(--accent);font-weight:600;padding:4px 0}
.hint{background:#fff4d6;color:#5c4300;border-radius:12px;padding:10px 12px;margin:-4px 0 14px;font-size:14px}
.hint button{margin-left:6px;background:#5c4300;color:#fff;border:0;border-radius:8px;padding:4px 10px;font-size:13px}

/* direzione */
.dir-switch{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:14px}
.dir{
  display:flex;align-items:center;gap:10px;text-align:left;
  background:var(--card);border:2px solid var(--line);border-radius:var(--radius);padding:12px;
}
.dir b{display:block;font-size:17px}
.dir small{display:block;color:var(--muted);font-size:12px;line-height:1.25}
.dir-arrow{font-size:28px;font-weight:700;width:30px;text-align:center}
.dir[aria-checked="true"]{background:var(--sel);border-color:var(--sel);color:var(--sel-ink)}
.dir[aria-checked="true"] small{color:inherit;opacity:.8}

/* boe */
.boe-card{display:grid;grid-template-columns:1fr 110px;gap:12px;align-items:center}
.boe-row{display:flex;align-items:center;gap:12px;margin-bottom:10px}
.boe-row small{display:block;color:var(--muted);font-size:12px;font-weight:600;letter-spacing:.03em}
.boe-row strong{display:block;font-size:26px;line-height:1.1;text-transform:uppercase}
.dot{width:30px;height:30px;border-radius:50%;flex:none;border:2px solid #1b2733}
.dot.red{background:var(--red)}
.dot.white{background:#fff}
.boe-tip{margin:4px 0 0;color:var(--muted);font-size:14px}
.boe-schema svg{width:100%;height:auto;display:block}

/* tachimetro */
.speed-main{display:flex;align-items:baseline;justify-content:center;gap:8px}
.speed-num{font-size:84px;font-weight:800;line-height:1;font-variant-numeric:tabular-nums;letter-spacing:-.03em}
.speed-unit{font-size:20px;color:var(--muted);font-weight:600}
.speed-sub,.meteo-sub{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin-top:12px;text-align:center}
.speed-sub small,.meteo-sub small{display:block;color:var(--muted);font-size:12px}
.speed-sub b,.meteo-sub b{font-size:17px;font-variant-numeric:tabular-nums;white-space:nowrap}
.meteo-sub b{font-size:15px}
.gps-line{display:flex;align-items:center;gap:8px;margin-top:12px;padding-top:10px;border-top:1px solid var(--line);font-size:14px;color:var(--muted)}
.gps-line .link{margin-left:auto}
.gps-dot{width:10px;height:10px;border-radius:50%;background:var(--muted)}
.gps-dot.ok{background:var(--ok)} .gps-dot.warn{background:var(--warn)} .gps-dot.bad{background:var(--bad)}

/* paese */
.town-main{display:flex;align-items:baseline;justify-content:space-between;gap:10px;margin-top:4px}
.town-main strong{font-size:30px;line-height:1.1}
.town-dist{font-size:20px;font-weight:700;color:var(--accent);white-space:nowrap}
.town-riva{margin:4px 0 0;color:var(--muted);font-size:14px}
.town-next{display:flex;justify-content:space-between;gap:10px;margin-top:12px;padding-top:10px;border-top:1px solid var(--line)}
.town-next small{color:var(--muted)}
.town-next span{font-weight:600;text-align:right}

/* meteo */
.meteo-head{display:flex;justify-content:space-between;align-items:center}
.meteo-main{display:flex;align-items:center;gap:14px;margin-top:6px}
.meteo-icon{font-size:48px;line-height:1;width:56px;text-align:center}
.meteo-temp{display:block;font-size:44px;font-weight:800;line-height:1}
.meteo-desc{display:block;color:var(--muted)}
.meteo-agg{margin:10px 0 0;font-size:12px;color:var(--muted)}

/* prontuario */
.toc{display:flex;gap:8px;overflow-x:auto;margin-bottom:14px;padding-bottom:2px}
.toc a{flex:none;background:var(--card);border:1px solid var(--line);border-radius:999px;padding:7px 14px;color:var(--ink);text-decoration:none;font-size:14px;font-weight:600}
h2{font-size:20px;margin:0 0 8px}
h3{font-size:16px;margin:0 0 2px}
h3.sub{margin-top:18px}
.card p{margin:0 0 10px}
.note{color:var(--muted);font-size:14px}
.tbl{width:100%;border-collapse:collapse;margin:6px 0 12px;font-size:15px}
.tbl th,.tbl td{border:1px solid var(--line);padding:10px 8px;text-align:center}
.tbl th small{color:var(--muted);font-weight:400}
.tbl thead th{background:var(--bg)}
.tbl td{font-weight:800}
.tbl td.r{color:#fff;background:var(--red)}
.tbl td.w{color:#1b2733;background:#fff}
.rombo-grid{display:grid;gap:10px;margin:10px 0}
.rombo-item{display:flex;align-items:center;gap:14px;padding:8px 0}
.rombo{flex:none;filter:drop-shadow(0 1px 1px rgba(0,0,0,.2))}
.rombo-item p{margin:0;color:var(--muted)}
.defs{margin:6px 0 10px}
.defs dt{font-weight:700;margin-top:8px}
.defs dd{margin:0;color:var(--muted)}
.list{margin:0 0 10px;padding-left:20px}
.list li{margin-bottom:6px}
.town-list{list-style:none;margin:0;padding:0}
.town-list li{display:flex;justify-content:space-between;padding:9px 0;border-bottom:1px solid var(--line)}
.town-list li span{color:var(--muted);font-size:14px}
.town-list li.near{font-weight:700}

/* nav in basso */
.bottom{
  position:fixed;left:0;right:0;bottom:0;z-index:5;display:grid;grid-template-columns:repeat(3,1fr);
  background:var(--card);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom);
}
.bottom button{background:none;border:0;padding:9px 4px 10px;font-size:13px;font-weight:600;color:var(--muted);display:flex;flex-direction:column;align-items:center;gap:2px}
.bottom button span{font-size:20px;line-height:1}
.bottom button.active{color:var(--accent)}

@media (max-width:380px){
  .speed-num{font-size:70px}
  .boe-card{grid-template-columns:1fr 84px}
  .boe-row strong{font-size:22px}
  .dir small{display:none}
}

/* GPS aiuto */
.btn-small{margin-left:auto;white-space:nowrap;background:var(--accent);color:#fff;border:0;border-radius:999px;padding:6px 14px;font-size:14px;font-weight:700}
.btn-small[hidden]{display:none}
.btn-small:not([hidden]) + .link{margin-left:8px}
.gps-help{margin-top:10px;background:#fff4d6;color:#4d3800;border-radius:12px;padding:10px 12px;font-size:14px;line-height:1.45}

/* installazione */
.install-banner{display:flex;align-items:center;gap:10px;background:var(--card);border:2px solid var(--accent);border-radius:var(--radius);padding:10px 12px;margin-bottom:14px;font-size:14px}
.install-banner[hidden]{display:none}
.install-banner span{flex:1}
.install-banner button{border:0;border-radius:999px;font-weight:700}
#bannerInstall{background:var(--accent);color:#fff;padding:7px 14px}
.install-banner .x{background:none;color:var(--muted);font-size:16px;padding:4px}
.btn{background:var(--accent);color:#fff;border:0;border-radius:12px;padding:12px 18px;font-weight:700;font-size:16px;width:100%}
.btn[hidden]{display:none}

/* intestazione: pulsanti compatti */
.chip{padding:6px 10px;font-size:15px;min-width:36px}
.brand strong{font-size:16px}

/* logo in fondo */
.logo-fondo{display:flex;flex-direction:column;align-items:center;gap:6px;margin:6px 0 10px}
.logo-fondo img{width:110px;height:auto;border-radius:16px;display:block;box-shadow:0 2px 8px rgba(0,0,0,.25)}
.logo-fondo small{color:var(--muted);font-size:12px}

/* iPhone: più spazio sotto Dynamic Island e barra di stato */
@supports (padding-top: env(safe-area-inset-top)){
  .top{padding-top:calc(env(safe-area-inset-top) + 18px)}
}
@media (display-mode: standalone){
  .top{padding-top:calc(env(safe-area-inset-top) + 22px);padding-bottom:12px}
}