/* ESN design system — mobile-first. Colori da ESN Visual Identity Manual (2019): cyan #00aeef, magenta #ec008c, green #7ac143, orange #f47b20, dark blue #2e3192.
Uso: ; tema: (default dark). Font in ./fonts/ */
@font-face{font-family:"Kelson Sans";font-weight:700;font-display:swap;src:url(fonts/KelsonSans-Bold.woff2) format("woff2")}
@font-face{font-family:"Lato";font-weight:400;font-display:swap;src:url(fonts/Lato-Regular.woff2) format("woff2")}
@font-face{font-family:"Lato";font-weight:700;font-display:swap;src:url(fonts/Lato-Bold.woff2) format("woff2")}
:root{
/* brand */
--cyan:#00aeef;--magenta:#ec008c;--green:#7ac143;--orange:#f47b20;--blue:#2e3192;
/* tema dark */
--bg:#0d0f2b;--surface:#13163b;--card:#181c4a;--line:#2b3070;
--ink:#f3f5ff;--muted:#a9afd6;--line-strong:#7b85b8;--blue-bar:#6c6fe0;--accent:#00aeef;--accent-ink:#5fd0ff;--on-accent:#06122b;
--ok:#7ac143;--warn:#f47b20;--bad:#ec008c;
--focus:#f47b20;
--info-bg:rgba(0,174,239,.12);--ok-bg:rgba(122,193,67,.14);--warn-bg:rgba(244,123,32,.14);--bad-bg:rgba(236,0,140,.18);--code-bg:#0a0c24;
/* tipografia ufficiale ESN: titoli Kelson Sans, testo Lato */
--font-head:"Kelson Sans",system-ui,sans-serif;
--font-body:"Lato",system-ui,-apple-system,"Segoe UI",sans-serif;
/* scala */
--pad:clamp(16px,4.5vw,24px);--gap:12px;--r:16px;--r-sm:10px;--tap:44px;--nav-h:60px;--measure:62ch;
--magenta-ink:#ff6fc1;--orange-ink:#ff9a55;--green-ink:#8fd35a;
color-scheme:dark;
}
:root[data-theme="light"]{
--bg:#f4f7fb;--surface:#fff;--card:#fff;--line:#dfe5f1;
--ink:#1b1f3b;--muted:#566083;--accent-ink:#05638d;--line-strong:#737d9f;--blue-bar:var(--blue);--focus:#a84a00;
--magenta-ink:#b0006a;--orange-ink:#a84a00;--green-ink:#3f7a12;
--info-bg:#e6f6fd;--ok-bg:#eef8e6;--warn-bg:#fff3e8;--bad-bg:#fde6f3;--code-bg:#eef2f9;
color-scheme:light;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;min-height:100dvh;font:1rem/1.55 var(--font-body);background:var(--bg);color:var(--ink);-webkit-tap-highlight-color:transparent;overflow-wrap:break-word;padding:0 env(safe-area-inset-right) 0 env(safe-area-inset-left)}
h1,h2,h3{font-family:var(--font-head);font-weight:700;line-height:1.08;margin:0 0 .45em;letter-spacing:-.01em;text-wrap:balance}
h1{font-size:clamp(2rem,9vw,3rem)}h2{font-size:clamp(1.35rem,5.5vw,1.75rem)}h3{font-size:1.25rem;line-height:1.2}
p{margin:0 0 1em;max-width:var(--measure);text-wrap:pretty}.lead{font-size:1.125rem;color:var(--muted)}a{color:var(--accent-ink)}
img,svg{max-width:100%}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px}
[hidden]{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:8px;z-index:100;padding:10px 14px;border-radius:var(--r-sm);background:var(--orange);color:#06122b;font-weight:700}.skip:focus{left:8px}
code{background:var(--code-bg);padding:1px 6px;border-radius:6px;font-size:.92em}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
/* layout */
.wrap{max-width:720px;margin:0 auto;padding:var(--pad)}
.stack>*+*{margin-top:var(--gap)}
.row{display:flex;gap:var(--gap);align-items:center;flex-wrap:wrap}
.muted{color:var(--muted)}
.stripe{height:6px;background:linear-gradient(90deg,var(--cyan) 0 20%,var(--orange) 20% 40%,var(--green) 40% 60%,var(--magenta) 60% 80%,var(--blue) 80%)}
/* header + logo (due ![]()
: .logo-dark per tema scuro, .logo-light per chiaro) */
.top{position:sticky;top:0;z-index:40;background:var(--surface);border-bottom:1px solid var(--line);padding:max(8px,env(safe-area-inset-top)) var(--pad) 8px;display:flex;align-items:center;gap:10px}
.top .logo{height:40px;width:auto;display:block}
.top .tools{margin-left:auto;display:flex;gap:8px}
.top .logo-light{display:none}
:root[data-theme="light"] .top .logo-dark{display:none}
:root[data-theme="light"] .top .logo-light{display:block}
/* colore funzionale: data-c="cyan|orange|green|magenta|blue" assegna il colore ESN a card, lista, chip */
[data-c=cyan]{--c:var(--cyan);--c-ink:var(--accent-ink)}[data-c=orange]{--c:var(--orange);--c-ink:var(--orange-ink)}
[data-c=green]{--c:var(--green);--c-ink:var(--green-ink)}[data-c=magenta]{--c:var(--magenta);--c-ink:var(--magenta-ink)}
[data-c=blue]{--c:var(--blue-bar);--c-ink:var(--accent-ink)}
:root[data-theme="light"] [data-c=blue]{--c-ink:var(--blue)}
/* card: bordo sottile, nessuna ombra; con data-c ha una barra colorata a sinistra */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px 18px}
.card[data-c]{border-left:5px solid var(--c)}
.card>:last-child{margin-bottom:0}
a.card{display:block;color:inherit;text-decoration:none}
/* bottoni */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:var(--tap);padding:0 18px;border:2px solid var(--accent);border-radius:999px;background:var(--accent);color:var(--on-accent);font:700 1rem var(--font-body);text-decoration:none;cursor:pointer;touch-action:manipulation}
.btn:hover{filter:brightness(1.08)}.btn.ghost:hover{border-color:var(--accent);filter:none}
.btn:active{transform:scale(.98)}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line-strong)}
.btn.block{display:flex;width:100%}
.btn[disabled]{opacity:.5;pointer-events:none}
.icon-btn{display:inline-grid;place-items:center;width:var(--tap);height:var(--tap);border:2px solid var(--line-strong);border-radius:50%;background:transparent;color:var(--ink);cursor:pointer}
/* chip / badge (colore via --c) */
.chip{display:inline-block;padding:3px 10px;border-radius:var(--r-sm);font-size:.875rem;font-weight:700;background:color-mix(in srgb,var(--c,var(--cyan)) 18%,transparent);color:var(--c-ink,var(--accent-ink))}
.chip.ok{--c:var(--green);--c-ink:var(--green-ink)}.chip.warn{--c:var(--orange);--c-ink:var(--orange-ink)}.chip.bad{--c:var(--magenta);--c-ink:var(--magenta-ink)}
.chip.ok::before{content:"✓ "}.chip.warn::before{content:"! "}.chip.bad::before{content:"✕ "}
.chip[aria-pressed]{min-height:var(--tap);display:inline-flex;align-items:center;padding:0 14px;border:2px solid var(--line);background:var(--bg);color:var(--ink);border-radius:999px;font-family:inherit;cursor:pointer;touch-action:manipulation}
.chip[aria-pressed=true]{background:var(--c,var(--cyan));border-color:var(--c,var(--cyan));color:#06122b}
/* callout (info di default; .ok .warn .bad) */
.callout{padding:12px 16px;border-radius:var(--r-sm);border-left:5px solid var(--accent);background:var(--info-bg)}
.callout.ok{border-color:var(--green);background:var(--ok-bg)}.callout.warn{border-color:var(--orange);background:var(--warn-bg)}.callout.bad{border-color:var(--magenta);background:var(--bad-bg)}
.callout>:last-child{margin-bottom:0}
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