/* =========================================================
   Italian SME Index — Prestatech design system
   Hanken Grotesk (display/UI) + Roboto (body)
   Blue 500 #0063FF · Ink Blue 800 #06173B · Canvas Grey 400
   ========================================================= */
:root{
  /* brand blue ramp */
  --blue:#0063FF;
  --blue-600:#1247BA;
  --blue-700:#0D3282;
  --blue-800:#06173B;
  --blue-300:#85B4FF;
  --blue-200:#C2D9FF;
  --blue-100:#EBF2FF;
  /* accents */
  --violet:#7168E0;
  --violet-50:#EFEEFC;
  --celeste:#66ADFF;
  --celeste-50:#EBF4FF;
  --green:#52B75B;
  --green-50:#D4EDD6;
  --red:#E0453B;
  --red-50:#FBE3E1;
  --amber:#EE742B;
  --amber-50:#FDF2EC;
  /* ink + surfaces (cool greys) */
  --ink:#06173B;
  --ink-2:#3A4045;
  --ink-3:#8A8A8D;
  --bg:#F5F5F7;
  --card:#FFFFFF;
  --line:#DDE3EC;
  --line-2:#EDF1F7;
  /* accent (tweakable) */
  --accent:var(--blue);
  --accent-600:var(--blue-600);
  --accent-100:var(--blue-200);
  --accent-50:var(--blue-100);
  /* type */
  --sans:'Roboto','Helvetica Neue',Arial,sans-serif;
  --display:'Hanken Grotesk','Helvetica Neue',Arial,sans-serif;
  --mono:ui-monospace,'SF Mono',Menlo,Consolas,monospace;
  --r:14px;
  --r-sm:10px;
  /* blue-tinted, low-contrast shadows */
  --shadow:0 12px 28px rgba(6,23,59,.10), 0 4px 10px rgba(6,23,59,.06);
  --shadow-sm:0 1px 3px rgba(6,23,59,.08), 0 1px 2px rgba(6,23,59,.04);
  --shadow-brand:0 8px 24px rgba(0,99,255,.26);
  font-synthesis:none;
}
body[data-accent="violet"] { --accent:#7168E0; --accent-600:#5B52C9; --accent-100:#CECBF6; --accent-50:#EFEEFC; }
body[data-accent="celeste"]{ --accent:#1F87FF; --accent-600:#0063FF; --accent-100:#C2DEFF; --accent-50:#EBF4FF; }
body[data-accent="ink"]    { --accent:#0D3282; --accent-600:#06173B; --accent-100:#C2D9FF; --accent-50:#EBF2FF; }

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0; background:var(--bg); color:var(--ink);
  font-family:var(--sans); font-size:16px; line-height:1.5;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
}
.tnum{ font-variant-numeric:tabular-nums; }

/* ---------- layout ---------- */
.wrap{ max-width:1200px; margin:0 auto; padding:0 28px; }
section{ position:relative; }

/* ---------- top nav ---------- */
.nav{ position:sticky; top:0; z-index:30; background:rgba(245,245,247,.82); backdrop-filter:blur(12px); border-bottom:1px solid var(--line); }
.nav .wrap{ display:flex; align-items:center; gap:28px; height:68px; }
.logo{ display:flex; align-items:center; gap:10px; }
.logo img{ height:26px; width:auto; display:block; }
.nav .links{ display:flex; gap:24px; margin-left:8px; }
.nav .links a{ color:var(--ink-2); text-decoration:none; font-size:14.5px; font-weight:600; white-space:nowrap; }
.nav .links a:hover{ color:var(--accent); }
.nav .right{ margin-left:auto; display:flex; align-items:center; gap:14px; }

/* ---------- shared bits ---------- */
.eyebrow{ font-family:var(--display); font-size:12.5px; letter-spacing:.14em; text-transform:uppercase; color:var(--accent); font-weight:700; }
.eyebrow.muted{ color:var(--ink-3); }
.card{ background:var(--card); border:1px solid var(--line); border-radius:var(--r); box-shadow:var(--shadow-sm); }
h1,h2,h3{ margin:0; letter-spacing:-.01em; }
.section-h{ font-family:var(--display); font-size:32px; font-weight:800; letter-spacing:-.025em; color:var(--ink); }
.lead{ color:var(--ink-2); font-size:17px; line-height:1.6; }

/* select / pill controls */
.pill{ display:inline-flex; align-items:center; gap:8px; height:38px; padding:0 14px; border-radius:999px; border:1px solid var(--line); background:var(--card); color:var(--ink); font-weight:600; font-size:14px; cursor:pointer; box-shadow:var(--shadow-sm); }
.pill .cal{ width:7px; height:7px; border-radius:2px; background:var(--accent); }
.pill svg{ color:var(--ink-3); }

.seg{ display:inline-flex; padding:3px; background:var(--bg); border:1px solid var(--line); border-radius:999px; }
.seg button{ font-family:var(--display); border:none; background:transparent; color:var(--ink-2); font-weight:600; font-size:13.5px; padding:7px 15px; border-radius:999px; cursor:pointer; transition:all 180ms cubic-bezier(.2,0,0,1); }
.seg button.on{ background:var(--accent); color:#fff; box-shadow:var(--shadow-brand); }

.delta{ display:inline-flex; align-items:center; gap:6px; font-weight:700; font-variant-numeric:tabular-nums; }
.delta .arr{ font-size:.78em; }
.delta.up{ color:var(--green); }
.delta.down{ color:var(--red); }
.deltapill{ display:inline-flex; align-items:center; gap:6px; padding:5px 11px; border-radius:999px; font-weight:700; font-size:14px; }
.deltapill.up{ background:var(--green-50); color:var(--green); }
.deltapill.down{ background:var(--red-50); color:var(--red); }

/* ---------- hero ---------- */
.hero{ padding:64px 0 30px; }
.hero::before{ content:""; position:absolute; inset:0; z-index:-1; pointer-events:none;
  background:radial-gradient(70% 120% at 12% 0%, var(--blue-100), transparent 60%); }
.hero-grid{ display:grid; grid-template-columns:1.05fr .95fr; gap:48px; align-items:center; }
.hero h1{ font-family:var(--display); font-size:58px; font-weight:800; line-height:1.0; letter-spacing:-.03em; margin:16px 0 20px; color:var(--ink); }
.hero h1 .reg{ color:var(--ink-2); }
.hero .lead{ max-width:460px; }
.hero .meta{ display:flex; align-items:center; gap:14px; margin-top:26px; }
.hero .meta .since{ font-family:var(--mono); font-size:12.5px; color:var(--ink-3); }

.value-card{ padding:34px 36px; border-radius:20px; position:relative; overflow:hidden; background:
  radial-gradient(120% 120% at 100% 0%, var(--accent-50), #fff 62%); }
.value-card .vc-top{ display:flex; align-items:center; justify-content:space-between; }
.value-card .num{ font-family:var(--display); font-size:132px; font-weight:800; line-height:.86; letter-spacing:-.04em; color:var(--accent); margin:8px 0 4px; font-variant-numeric:tabular-nums; }
.value-card .scale{ font-family:var(--mono); font-size:12.5px; color:var(--ink-3); }
.vc-basis{ display:flex; align-items:center; gap:14px; margin-top:14px; flex-wrap:wrap; }
.sa-toggle-row{ display:flex; align-items:center; gap:10px; cursor:pointer; }
.sa-label{ font-family:var(--display); font-size:12px; letter-spacing:.06em; color:var(--ink-2); font-weight:600; }
.twk-toggle{ position:relative; width:36px; height:20px; border:0; border-radius:999px; background:rgba(6,23,59,.15); transition:background .15s; cursor:pointer; padding:0; flex:none; }
.twk-toggle[data-on="1"]{ background:var(--accent); }
.twk-toggle i{ position:absolute; top:3px; left:3px; width:14px; height:14px; border-radius:50%; background:#fff; box-shadow:0 1px 2px rgba(6,23,59,.25); transition:transform .15s; pointer-events:none; display:block; }
.twk-toggle[data-on="1"] i{ transform:translateX(16px); }
.value-card .deltas{ display:flex; gap:14px; margin-top:24px; padding-top:22px; border-top:1px solid var(--line); }
.value-card .dl{ flex:1; }
.value-card .dl .k{ font-family:var(--display); font-size:11px; letter-spacing:.1em; text-transform:uppercase; color:var(--ink-3); font-weight:700; }
.value-card .dl .v{ font-size:30px; font-weight:800; margin-top:6px; font-variant-numeric:tabular-nums; }

/* ---------- chart card ---------- */
.panel{ padding:28px 30px 22px; border-radius:var(--r); }
.panel-head{ display:flex; align-items:flex-start; justify-content:space-between; gap:16px; flex-wrap:wrap; }
.panel h3, .mini h3{ font-family:var(--display); font-size:22px; font-weight:800; letter-spacing:-.02em; color:var(--ink); }
.legend{ display:flex; align-items:center; gap:18px; margin-top:16px; flex-wrap:wrap; }
.lg{ display:inline-flex; align-items:center; gap:8px; font-size:13.5px; font-weight:600; color:var(--ink-2); }
.lg .sw{ width:22px; height:3px; border-radius:3px; background:var(--accent); display:inline-block; }
.lg .sw.raw{ background:var(--accent); opacity:.3; }
.lg .sw.trend{ height:0; border-top:3px dashed var(--amber); background:none; }
.lg.toggle{ cursor:pointer; padding:5px 11px; border-radius:999px; border:1px solid var(--line); background:var(--card); user-select:none; transition:opacity .15s; }
.lg.toggle[aria-pressed="false"]{ opacity:.38; }
#desToggle[aria-pressed="true"],
#rawToggle[aria-pressed="true"]  { border-color:var(--accent); background:var(--accent-50); }
#trendToggle[aria-pressed="true"]{ border-color:var(--amber); background:var(--amber-50); color:var(--amber); }
.lg.toggle .sw.trend{ border-top-color:var(--amber); }
.chart-wrap{ margin-top:8px; position:relative; }
.chart-tip{
  position:absolute; top:6px; left:0; pointer-events:none; z-index:6;
  background:#fff; border:1px solid var(--line); border-radius:12px;
  box-shadow:var(--shadow); padding:11px 13px; min-width:168px;
}
.chart-tip .tip-h{ font-family:var(--mono); font-size:12px; letter-spacing:.1em; text-transform:uppercase; color:var(--ink-3); margin-bottom:8px; }
.chart-tip .tip-r{ display:flex; align-items:center; gap:9px; font-size:13.5px; color:var(--ink-2); font-weight:600; padding:3px 0; }
.chart-tip .tip-r b{ margin-left:auto; color:var(--ink); font-weight:800; font-variant-numeric:tabular-nums; }
.chart-tip .dot{ width:11px; height:11px; border-radius:3px; flex:none; }
.chart-tip .dot.des{ background:var(--accent); }
.chart-tip .dot.raw{ background:var(--accent); opacity:.34; }
.chart-tip .dot.tr{ background:var(--amber); }
.chart-wrap svg{ display:block; width:100%; height:auto; overflow:visible; }
.axis-label{ font-family:var(--mono); font-size:12px; fill:var(--ink-3); }
.gridline{ stroke:var(--line-2); stroke-width:1; }
.zeroline{ stroke:var(--line); stroke-width:1.5; stroke-dasharray:2 5; }
.x-tick{ stroke:var(--ink-3); stroke-width:1; }
.callout-pill{ fill:var(--accent); }
.callout-txt{ font-family:var(--display); font-weight:800; fill:#fff; font-size:15px; }

/* ---------- seasonality ---------- */
.grid-2{ display:grid; grid-template-columns:1fr 1fr; gap:24px; }
.grid-3{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.mini{ padding:28px 30px 22px; border-radius:var(--r); }
.mini .sub{ color:var(--ink-3); font-size:14px; margin-top:6px; line-height:1.5; }

/* readings cards */
.read{ padding:24px; border-radius:var(--r); display:flex; flex-direction:column; gap:14px; }
.tile{ width:46px; height:46px; border-radius:12px; display:flex; align-items:center; justify-content:center; }
.tile.blue{ background:var(--accent-50); color:var(--accent); }
.tile.violet{ background:var(--violet-50); color:var(--violet); }
.tile.green{ background:var(--green-50); color:var(--green); }
.read h3{ font-size:16.5px; font-weight:700; }
.read .rval{ font-size:15px; font-weight:700; }
.read .rtxt{ color:var(--ink-2); font-size:14px; line-height:1.5; }

/* ---------- about ---------- */
.note{ color:var(--ink-2); font-size:15px; line-height:1.7; max-width:760px; margin:10px 0 0; text-wrap:pretty; }

/* ---------- footer — dark ink (Blue 800) ---------- */
.foot{ margin-top:72px; background:var(--blue-800); color:rgba(255,255,255,.72);
  background-image:radial-gradient(80% 130% at 100% 0%, rgba(0,99,255,.22), transparent 55%); }
.foot .wrap{ padding:48px 28px 52px; display:flex; gap:40px; flex-wrap:wrap; justify-content:space-between; align-items:flex-start; }
.foot .foot-brand{ display:flex; flex-direction:column; gap:18px; max-width:560px; }
.foot .foot-brand img{ height:26px; width:auto; align-self:flex-start; max-width:180px; }
.foot .note{ color:rgba(255,255,255,.62); font-size:14px; line-height:1.6; margin:0; }
.foot .chips{ display:flex; gap:10px; flex-wrap:wrap; margin-top:14px; }
.foot .chip{ font-family:var(--mono); font-size:12px; color:rgba(255,255,255,.7); background:rgba(255,255,255,.06); border:1px solid rgba(255,255,255,.14); border-radius:999px; padding:6px 12px; }
.foot .fr{ font-family:var(--mono); font-size:12.5px; color:rgba(255,255,255,.5); text-align:right; line-height:1.7; }

@media (max-width:980px){
  .hero-grid{ grid-template-columns:1fr; gap:30px; }
  .hero h1{ font-size:56px; }
  .value-card .num{ font-size:120px; }
  .grid-3{ grid-template-columns:1fr; }
  .grid-2{ grid-template-columns:1fr; }
  .nav .links{ display:none; }
}

/* anchor offsets for sticky nav */
#index, #charts, #about, #press{ scroll-margin-top:84px; }