/* ============================================================
   ECM — Case History
   Estende css/v3.css. Non ridefinisce nulla di v3: usa i suoi token
   (--paper, --ink, --accent, --deep, --line, --ff-mono, --container).
   ============================================================ */

/* ---------- Hero di sezione ---------- */
.ch-hero { padding-block: clamp(48px, 7vw, 96px) clamp(32px, 4vw, 56px); }
.ch-hero h1 {
  font-family: var(--ff-display);
  font-size: clamp(2.4rem, 6.4vw, 5rem);
  line-height: .96; letter-spacing: -.03em; font-weight: 900;
  color: var(--ink); margin-bottom: 26px;
}
.ch-hero h1 em { font-style: normal; color: var(--accent); }
.ch-hero .ch-lead {
  font-size: clamp(1.05rem, 1.6vw, 1.32rem);
  line-height: 1.6; color: var(--ink-2); max-width: 62ch;
}
.ch-hero .ch-lead strong { color: var(--ink); font-weight: 700; }

/* ---------- Blocco "la verità nei dati" (apertura, fondo scuro) ---------- */
.truth { background: var(--deep); color: #EAF2F3; padding-block: clamp(56px, 7vw, 104px); }
.truth h2 {
  font-family: var(--ff-display); font-weight: 900;
  font-size: clamp(1.8rem, 4vw, 3.1rem); line-height: 1.04;
  letter-spacing: -.02em; color: #fff; margin-bottom: 20px;
}
.truth h2 em { font-style: normal; color: var(--accent); }
.truth .truth-lead { font-size: 1.06rem; line-height: 1.7; color: #B9CDD1; max-width: 66ch; margin-bottom: 40px; }
.truth .truth-lead strong { color: #fff; font-weight: 700; }

.truth-table { width: 100%; border-collapse: collapse; font-size: .95rem; }
.truth-table caption { text-align: left; margin-bottom: 14px; color: #8FA9AD; font-family: var(--ff-mono); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; }
.truth-table th, .truth-table td { padding: 14px 16px; text-align: left; border-bottom: 1px solid rgba(255,255,255,.14); }
.truth-table th { font-family: var(--ff-mono); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; color: #8FA9AD; font-weight: 400; }
.truth-table td { color: #DCE8EA; }
.truth-table td:first-child { font-weight: 700; color: #fff; }
.truth-table .num { font-family: var(--ff-mono); white-space: nowrap; }
.truth-table .bad { color: var(--accent); font-weight: 700; }
.truth-note { margin-top: 26px; font-size: .95rem; line-height: 1.7; color: #B9CDD1; max-width: 70ch; }
.truth-note strong { color: #fff; }
@media (max-width: 720px) {
  .truth-table thead { position: absolute; left: -9999px; }
  .truth-table tr { display: block; padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,.14); }
  .truth-table td { display: flex; justify-content: space-between; gap: 16px; border: 0; padding: 5px 0; }
  .truth-table td::before { content: attr(data-l); font-family: var(--ff-mono); font-size: .66rem; letter-spacing: .08em; text-transform: uppercase; color: #8FA9AD; }
  .truth-table td:first-child::before { content: none; }
}

/* ---------- Griglia case history ---------- */
.ch-grid { display: grid; gap: 2px; background: var(--line); border: 1px solid var(--line); }
@media (min-width: 820px) { .ch-grid { grid-template-columns: 1fr 1fr; } }

.ch-card {
  display: flex; flex-direction: column;
  background: var(--paper); padding: 30px 28px 26px;
  text-decoration: none; color: inherit;
  transition: background .25s;
}
.ch-card:hover, .ch-card:focus-visible { background: var(--paper-2); }
.ch-card:focus-visible { outline: 3px solid var(--accent); outline-offset: -3px; }

.ch-card-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; margin-bottom: 18px; }
.ch-card-shot {
  width: 96px; height: 66px; flex-shrink: 0;
  object-fit: cover; object-position: top center;
  border: 1px solid var(--line); background: var(--paper-2);
}
.ch-card-id h3 {
  font-family: var(--ff-display); font-weight: 800;
  font-size: clamp(1.3rem, 2.4vw, 1.7rem); line-height: 1.05;
  letter-spacing: -.02em; color: var(--ink); margin-bottom: 8px;
}
.ch-card-meta { font-family: var(--ff-mono); font-size: .66rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); line-height: 1.9; }
.ch-card-meta .rel { color: var(--accent); }

.ch-card-claim {
  font-size: 1.02rem; line-height: 1.55; color: var(--ink-2);
  padding-bottom: 20px; margin-bottom: 20px; border-bottom: var(--rule);
  flex-grow: 1;
}
.ch-card-claim strong { color: var(--ink); font-weight: 700; }

.ch-card-metric { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; }
.ch-card-figure .v {
  font-family: var(--ff-display); font-weight: 900;
  font-size: clamp(1.9rem, 4vw, 2.7rem); line-height: 1;
  letter-spacing: -.03em; color: var(--accent);
}
.ch-card-figure .l { font-family: var(--ff-mono); font-size: .64rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); margin-top: 7px; max-width: 26ch; line-height: 1.7; }
.ch-card-spark { flex-shrink: 0; }
.ch-card-go { margin-top: 22px; font-family: var(--ff-mono); font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink); font-weight: 700; }
.ch-card:hover .ch-card-go { color: var(--accent); }

/* sparkline nelle card */
.spark { display: block; overflow: visible; }
.spark .s-line { fill: none; stroke: var(--ink); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.spark .s-line.up { stroke: var(--accent); }
.spark .s-dot { fill: var(--accent); }
.spark .s-base { stroke: var(--line); stroke-width: 1; stroke-dasharray: 3 3; }

/* ---------- Pagina singola: intestazione ---------- */
.case-head { padding-block: clamp(40px, 6vw, 84px) 0; }
.case-kicker { font-family: var(--ff-mono); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 22px; display: block; }
.case-kicker a { color: var(--ink-3); text-decoration: none; }
.case-kicker a:hover { color: var(--accent); }
.case-head h1 {
  font-family: var(--ff-display); font-weight: 900;
  font-size: clamp(2.1rem, 5.4vw, 4.2rem); line-height: 1;
  letter-spacing: -.03em; color: var(--ink); margin-bottom: 24px; max-width: 20ch;
}
.case-head h1 em { font-style: normal; color: var(--accent); }
.case-sub { font-size: clamp(1.05rem, 1.5vw, 1.28rem); line-height: 1.6; color: var(--ink-2); max-width: 60ch; }

.case-facts {
  display: grid; gap: 1px; background: var(--line);
  border: 1px solid var(--line); margin-top: 44px;
}
@media (min-width: 700px) { .case-facts { grid-template-columns: repeat(4, 1fr); } }
.case-fact { background: var(--paper); padding: 20px 22px; }
.case-fact .k { font-family: var(--ff-mono); font-size: .64rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); display: block; margin-bottom: 8px; }
.case-fact .v { font-weight: 700; font-size: 1rem; color: var(--ink); line-height: 1.4; }

/* ---------- Blocchi di testo ---------- */
.case-block { padding-block: clamp(48px, 6vw, 88px); }
.case-block + .case-block { border-top: var(--rule); }
.case-block .bl-num { font-family: var(--ff-mono); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); }
.case-block h2 {
  font-family: var(--ff-display); font-weight: 900;
  font-size: clamp(1.7rem, 3.6vw, 2.7rem); line-height: 1.06;
  letter-spacing: -.02em; color: var(--ink); margin: 12px 0 26px;
}
.case-block h2 em { font-style: normal; color: var(--accent); }
.case-prose { font-size: 1.06rem; line-height: 1.75; color: var(--ink-2); max-width: 68ch; }
.case-prose p + p { margin-top: 1.1em; }
.case-prose strong { color: var(--ink); font-weight: 700; }
.case-prose em { font-style: italic; }

/* citazione dai dati (pull-quote) */
.data-pull {
  margin: 34px 0; padding: 26px 30px;
  border-left: 4px solid var(--accent); background: var(--paper-2);
  font-size: clamp(1.1rem, 2vw, 1.35rem); line-height: 1.5;
  font-weight: 700; color: var(--ink); max-width: 62ch;
}
.data-pull .mono { display: block; margin-bottom: 10px; color: var(--ink-3); font-weight: 400; }

/* ---------- Il loop dell'intervento ---------- */
.loop { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 38px; }
@media (min-width: 780px) { .loop { grid-template-columns: repeat(4, 1fr); } }
.loop-step { background: var(--paper); padding: 24px 22px 26px; }
.loop-step .n { font-family: var(--ff-mono); font-size: .68rem; letter-spacing: .1em; color: var(--accent); font-weight: 700; }
.loop-step h3 { font-family: var(--ff-display); font-size: 1.12rem; font-weight: 800; letter-spacing: -.01em; color: var(--ink); margin: 10px 0 9px; }
.loop-step p { font-size: .94rem; line-height: 1.6; color: var(--ink-2); }

/* ---------- Grafico ---------- */
.chart-figure { margin: 0; }
.chart-box { border: 1px solid var(--line); background: var(--paper); padding: 26px 22px 18px; }
.chart-title { font-family: var(--ff-display); font-weight: 800; font-size: 1.1rem; letter-spacing: -.01em; color: var(--ink); margin-bottom: 4px; }
.chart-sub { font-family: var(--ff-mono); font-size: .66rem; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 22px; }
.chart-svg { width: 100%; height: auto; display: block; overflow: visible; }

.chart-svg .grid-l { stroke: var(--line-2); stroke-width: 1; }
.chart-svg .grid-base { stroke: var(--line); stroke-width: 1.5; }
.chart-svg .ax { font-family: var(--ff-mono); font-size: 13px; fill: var(--ink-3); letter-spacing: .06em; }
.chart-svg .ax-y { text-anchor: end; }
.chart-svg .ax-x { text-anchor: middle; }

.chart-svg .serie { fill: none; stroke-width: 3; stroke-linejoin: round; stroke-linecap: round; }
.chart-svg .serie-a { stroke: var(--accent); }
.chart-svg .serie-b { stroke: var(--ink-2); stroke-width: 2.5; stroke-dasharray: 7 5; }
.chart-svg .fill-a { fill: var(--accent); opacity: .09; }
.chart-svg .dot { fill: var(--accent); stroke: var(--paper); stroke-width: 3; }
.chart-svg .dot-b { fill: var(--ink-2); stroke: var(--paper); stroke-width: 3; }

.chart-svg .marker { stroke: var(--ink); stroke-width: 1.5; stroke-dasharray: 4 4; opacity: .5; }
.chart-svg .marker-lab { font-family: var(--ff-mono); font-size: 12px; fill: var(--ink); letter-spacing: .06em; font-weight: 700; }
.chart-svg .note { font-family: var(--ff-mono); font-size: 12.5px; fill: var(--ink-3); letter-spacing: .04em; }
.chart-svg .note-strong { fill: var(--accent); font-weight: 700; font-size: 14px; }
.chart-svg .bar { fill: var(--accent); }
.chart-svg .bar-lab { font-family: var(--ff-mono); font-size: 13px; fill: var(--ink); text-anchor: middle; font-weight: 700; }

.chart-legend { display: flex; flex-wrap: wrap; gap: 22px; margin-top: 20px; padding-top: 16px; border-top: var(--rule); }
.chart-legend span { display: inline-flex; align-items: center; gap: 9px; font-family: var(--ff-mono); font-size: .68rem; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-2); }
.chart-legend i { width: 22px; height: 3px; background: var(--accent); flex-shrink: 0; }
.chart-legend i.dash { background: repeating-linear-gradient(90deg, var(--ink-2) 0 6px, transparent 6px 11px); height: 2px; }
.chart-caption { margin-top: 18px; font-size: .95rem; line-height: 1.7; color: var(--ink-2); max-width: 72ch; }
.chart-caption strong { color: var(--ink); }

/* ---------- KPI ---------- */
.kpi-grid { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 8px; }
@media (min-width: 640px) { .kpi-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 980px) { .kpi-grid { grid-template-columns: repeat(4, 1fr); } }
.kpi { background: var(--paper); padding: 30px 24px 28px; }
.kpi .v {
  font-family: var(--ff-display); font-weight: 900;
  font-size: clamp(2rem, 3.6vw, 2.9rem); line-height: 1;
  letter-spacing: -.03em; color: var(--accent); display: block;
}
.kpi .v small { font-size: .5em; letter-spacing: 0; }
.kpi .k { display: block; margin-top: 12px; font-weight: 700; font-size: .98rem; color: var(--ink); line-height: 1.4; }
.kpi .d { display: block; margin-top: 7px; font-size: .88rem; line-height: 1.6; color: var(--ink-3); }
.kpi.quiet .v { color: var(--ink); }

/* ---------- Onestà: cosa resta da fare ---------- */
.honest {
  margin-top: 40px; border: 1px solid var(--line); border-left: 4px solid var(--ink-3);
  background: var(--paper-2); padding: 26px 28px;
}
.honest .mono { color: var(--ink-3); display: block; margin-bottom: 12px; }
.honest p { font-size: 1rem; line-height: 1.7; color: var(--ink-2); max-width: 68ch; }
.honest p strong { color: var(--ink); }
.honest ul { margin: 12px 0 0 18px; }
.honest li { font-size: 1rem; line-height: 1.7; color: var(--ink-2); }

/* ---------- Citazione cliente ---------- */
.quote-box { border-top: 2px solid var(--ink); padding-top: 34px; margin-top: 8px; }
.quote-box blockquote {
  font-family: var(--ff-display); font-weight: 800;
  font-size: clamp(1.4rem, 3vw, 2.1rem); line-height: 1.28;
  letter-spacing: -.02em; color: var(--ink); max-width: 24ch;
}
.quote-box cite { display: block; margin-top: 20px; font-style: normal; font-family: var(--ff-mono); font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); }

/* ---------- Navigazione tra case ---------- */
.case-nav { display: grid; gap: 1px; background: var(--line); border-block: 1px solid var(--line); }
@media (min-width: 720px) { .case-nav { grid-template-columns: 1fr 1fr; } }
.case-nav a { background: var(--paper); padding: 30px 28px; text-decoration: none; display: block; transition: background .2s; }
.case-nav a:hover { background: var(--paper-2); }
.case-nav .mono { color: var(--ink-3); display: block; margin-bottom: 10px; }
.case-nav strong { font-family: var(--ff-display); font-size: 1.3rem; font-weight: 800; letter-spacing: -.02em; color: var(--ink); }
.case-nav a:hover strong { color: var(--accent); }
.case-nav .next { text-align: right; }

/* ---------- Metodo (riuso in hub) ---------- */
.method-note { margin-top: 34px; font-size: .95rem; line-height: 1.75; color: var(--ink-3); max-width: 70ch; }
.method-note strong { color: var(--ink-2); }

/* ---------- Striscia prova in home (4 tessere) ---------- */
.ch-strip { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
@media (min-width: 700px)  { .ch-strip { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1040px) { .ch-strip { grid-template-columns: repeat(4, 1fr); } }
.ch-tile {
  background: var(--paper); padding: 26px 22px 22px;
  text-decoration: none; color: inherit;
  display: flex; flex-direction: column; transition: background .25s;
}
.ch-tile:hover, .ch-tile:focus-visible { background: var(--paper-2); }
.ch-tile:focus-visible { outline: 3px solid var(--accent); outline-offset: -3px; }
.ch-tile h3 { font-family: var(--ff-display); font-weight: 800; font-size: 1.16rem; letter-spacing: -.02em; color: var(--ink); }
.ch-tile .sect { font-family: var(--ff-mono); font-size: .62rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); margin-top: 6px; }
.ch-tile .claim { font-size: .95rem; line-height: 1.55; color: var(--ink-2); margin-top: 14px; padding-bottom: 16px; flex-grow: 1; }
.ch-tile .fig { display: flex; align-items: flex-end; justify-content: space-between; gap: 12px; padding-top: 16px; border-top: var(--rule); }
.ch-tile .fig .v { font-family: var(--ff-display); font-weight: 900; font-size: 1.9rem; line-height: 1; letter-spacing: -.03em; color: var(--accent); }
.ch-tile .fig .l { font-family: var(--ff-mono); font-size: .58rem; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); margin-top: 6px; line-height: 1.7; }
.ch-tile:hover h3 { color: var(--accent); }
/* striscia con 2 sole tessere (pagine servizio) */
@media (min-width: 700px)  { .ch-strip.two { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1040px) { .ch-strip.two { grid-template-columns: repeat(2, 1fr); } }