/* Site layout — built on the Modernist tokens in modernist.css.
   One system for every page: a side index (.side) next to the content (.main). */

:root {
  --gutter: 48px;
  --rule: 2px solid var(--color-divider);
  --rule-thin: 1px solid var(--color-divider);
}
@media (max-width: 720px) { :root { --gutter: 20px; } }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
a { color: var(--color-accent); }
a:hover { color: var(--color-accent-700); }

.page {
  max-width: 1280px; margin: 0 auto;
  background: var(--color-bg); color: var(--color-text);
  display: grid; grid-template-columns: 280px minmax(0, 1fr);
}
@media (min-width: 1300px) { .page { border-inline: var(--rule); } }
.page-simple { display: block; min-height: 100vh; }
.page-simple .main { border-left: 0; }
.nf-en { font-size: clamp(28px, 3.2vw, 40px); }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: 8px; top: -60px; z-index: 10;
  padding: 8px 12px; background: var(--color-text); color: var(--color-bg);
}
.skip-link:focus-visible { top: 8px; color: var(--color-bg); }

/* — shared type — */
.kicker { font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--color-accent-700); }
.meta { font-size: 12px; color: var(--color-neutral-700); }
.code { font-weight: 600; color: var(--color-accent-700); }
.page h1, .page h2, .page h3, .page p { margin: 0; }
.page h2.kicker { font-family: var(--font-body); font-weight: 400; font-size: 12px; letter-spacing: .1em; line-height: 1.55; }
.page h3 { letter-spacing: normal; }

/* — buttons: wide buttons keep the label flush left, arrow on the right — */
.btn.btn-primary, .btn.btn-primary:hover { color: var(--color-bg); }
/* Small text in the accent uses the deep ramp step for 4.5:1 contrast, as the readme advises. */
.btn.btn-ghost, .btn.btn-ghost:hover { color: var(--color-accent-700); }
.tag-outline { color: var(--color-accent-700); border-color: var(--color-accent-700); }
.btn-wide { justify-content: space-between; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; }

/* — cells: a grid whose 2px gaps draw the internal rules — */
.cells { display: grid; gap: 2px; background: var(--color-divider); }
.cells > * { background: var(--color-bg); min-width: 0; }
.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.rule-top { border-top: var(--rule); }
.rule-bottom { border-bottom: var(--rule); }
@media (max-width: 1024px) {
  .cols-3, .cols-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .cols-2, .cols-3, .cols-4 { grid-template-columns: minmax(0, 1fr); }
}

/* ══════════════ side index ══════════════ */
.side { padding: 32px 28px; display: flex; flex-direction: column; gap: 32px; }
.side-id { display: flex; flex-direction: column; gap: 4px; }
.side-id .name { font-weight: 800; font-size: 22px; line-height: 1.1; color: var(--color-text); text-decoration: none; }
.side-id .role { font-size: 13px; }
.side-photo { aspect-ratio: 4 / 5; overflow: hidden; }
.side-photo img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 30%; }
.menu { display: flex; flex-direction: column; border-top: var(--rule); font-size: 14px; }
.menu a {
  padding: 10px 8px; border-bottom: var(--rule-thin); display: flex; gap: 12px;
  color: var(--color-text); text-decoration: none;
}
.menu a .code { font-weight: 600; }
.menu a:hover { background: var(--color-surface); color: var(--color-text); }
.menu a[aria-current='page'] { background: var(--color-surface); font-weight: 800; }
.side-block { display: flex; flex-direction: column; border-top: var(--rule); font-size: 13px; }
.side-block .title { padding: 8px 0; color: var(--color-neutral-700); }
.side-block a { padding: 6px 0; color: var(--color-text); text-decoration: none; }
.side-block a:hover { color: var(--color-accent); }
.side-note { gap: 8px; padding-top: 12px; }
.side-foot { display: flex; flex-direction: column; gap: 8px; margin-top: auto; }
.side-foot .btn { padding: 12px 14px; }
.side-links { display: flex; justify-content: space-between; align-items: center; gap: 16px; font-size: 12px; }
.side-links .social { color: var(--color-text); text-decoration: none; }
.side-links .social:hover { color: var(--color-accent); }
.lang-switch { display: flex; gap: 6px; font-size: 12px; }
.lang-switch a { color: var(--color-text); text-decoration: none; }
.lang-switch a:hover { color: var(--color-accent); }
.lang-switch a[aria-current='true'] { font-weight: 800; }
.main { border-left: var(--rule); min-width: 0; }

@media (min-width: 1025px) and (min-height: 760px) {
  .side { position: sticky; top: 0; height: 100vh; align-self: start; overflow-y: auto; }
}
@media (max-width: 1024px) {
  .page { grid-template-columns: minmax(0, 1fr); }
  .side {
    display: grid; grid-template-columns: auto minmax(0, 1fr) auto;
    grid-template-areas: "photo id foot" "menu menu menu";
    align-items: center; gap: 16px 20px; padding: 20px var(--gutter);
  }
  .side-id { grid-area: id; }
  .side-photo { grid-area: photo; width: 56px; }
  .side-foot { grid-area: foot; margin-top: 0; align-items: flex-end; }
  .menu { grid-area: menu; flex-direction: row; overflow-x: auto; border-top: 0; }
  .menu a { border-bottom: 0; white-space: nowrap; gap: 6px; }
  .side-block { display: none; }
  .main { border-left: 0; border-top: var(--rule); }
}
@media (max-width: 640px) {
  .side-foot .btn { display: none; }
  .lang-switch { font-size: 13px; }
}

/* ══════════════ content blocks ══════════════ */
.hero { padding: 56px var(--gutter); border-bottom: var(--rule); display: flex; flex-direction: column; gap: 20px; }
.hero h1 {
  font-size: clamp(34px, 4.6vw, 58px); line-height: 1.04; letter-spacing: -.025em;
  max-width: 860px; text-wrap: balance;
}
.hero-sm h1 { font-size: clamp(32px, 4.1vw, 52px); line-height: 1.05; max-width: 820px; }
.hero > p { font-size: 17px; max-width: 700px; }
.hero-sm > p { font-size: 16px; max-width: 680px; }
.hero-open { border-bottom: 0; padding-bottom: 32px; }

.traits {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  max-width: 860px; margin-top: 8px; border-top: var(--rule);
}
.trait { display: flex; flex-direction: column; gap: 4px; }
.trait:first-child { padding: 16px 24px 0 0; border-right: var(--rule); }
.trait:last-child { padding: 16px 0 0 24px; }
.trait strong { font-size: 15px; font-weight: 800; }
.trait span { font-size: 13px; }
@media (max-width: 720px) {
  .traits { grid-template-columns: minmax(0, 1fr); }
  .trait:first-child { padding: 16px 0; border-right: 0; border-bottom: var(--rule); }
  .trait:last-child { padding: 16px 0 0; }
}

.block { padding: 48px var(--gutter); }
.block-ruled { border-bottom: var(--rule); }
.block-head { padding: 48px var(--gutter) 24px; }
.block-head-row { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; }
.block > .kicker { margin-bottom: 24px; }

/* principles */
.principle { padding: 28px 24px 32px; display: flex; flex-direction: column; gap: 10px; }
.principle .n { font-size: 32px; font-weight: 800; color: var(--color-accent); line-height: 1; }
.principle h3 { font-size: 17px; }
.principle p { font-size: 13px; }

/* collaboration modes */
.modes { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: var(--rule); }
.mode { padding: 16px 20px 0 0; display: flex; flex-direction: column; gap: 8px; }
.mode .meta { font-size: 12px; }
.mode span { font-size: 15px; font-weight: 600; }
@media (max-width: 720px) { .modes { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 24px; } }

/* AI */
.ai-head { padding: 48px var(--gutter) 32px; display: flex; flex-direction: column; gap: 16px; }
.ai-head h2 { font-size: clamp(28px, 3.2vw, 40px); line-height: 1.08; max-width: 760px; }
.ai-head p { font-size: 15px; max-width: 680px; }
.ai-item { padding: 32px var(--gutter); display: flex; flex-direction: column; gap: 14px; }
.ai-item .top { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.ai-item .letter { font-size: 15px; font-weight: 800; color: var(--color-accent-700); }
.ai-item h3 { font-size: 24px; line-height: 1.15; }
.ai-item p { font-size: 14px; }

/* case cards (featured on home) */
.case-card { padding: 28px 24px; display: flex; flex-direction: column; gap: 10px; }
.case-card .top { display: flex; justify-content: space-between; gap: 12px; font-size: 12px; }
.case-card a.code { text-decoration: none; }
.case-card a.code:hover { text-decoration: underline; }
.case-card h3 { font-size: 19px; }
.case-card p { font-size: 13px; flex: 1; }
@media (max-width: 640px) { .case-card { padding: 28px var(--gutter); } }

/* contact box closing every page */
.close { padding: 48px var(--gutter); }
.close-box {
  background: var(--color-accent); color: var(--color-bg); padding: 40px;
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px;
}
.close-box .lead { display: flex; flex-direction: column; gap: 12px; }
.close-box .page-kicker { font-size: 12px; letter-spacing: .1em; text-transform: uppercase; }
.close-box h2 { font-size: clamp(26px, 2.8vw, 36px); line-height: 1.05; }
.close-box h2.h2-sm { font-size: clamp(26px, 2.6vw, 32px); }
.close-box .reach { display: flex; flex-direction: column; gap: 6px; justify-content: flex-end; }
.close-box .email { font-size: 20px; font-weight: 800; color: inherit; text-decoration: none; overflow-wrap: anywhere; }
.close-box .email:hover { color: inherit; text-decoration: underline; }
.close-box .note { font-size: 14px; }
.close-box .social { font-size: 16px; font-weight: 800; color: inherit; text-underline-offset: 3px; }
.close-box .social:hover { color: inherit; text-decoration-thickness: 2px; }
@media (max-width: 900px) {
  .close-box { grid-template-columns: minmax(0, 1fr); padding: 32px 24px; }
}
@media (max-width: 640px) { .close { padding: 32px 0 0; } }

/* ══════════════ Competenze ══════════════ */
.domain {
  display: grid; grid-template-columns: 56px minmax(0, 1.2fr) minmax(0, 1fr) 120px; gap: 24px;
  padding: 28px var(--gutter); border-bottom: var(--rule); align-items: start;
}
.domain .n { font-size: 15px; font-weight: 800; color: var(--color-accent-700); }
.domain .what { display: flex; flex-direction: column; gap: 8px; }
.domain h3 { font-size: 24px; line-height: 1.15; }
.domain p { font-size: 14px; }
.domain .refs { display: flex; flex-direction: column; gap: 4px; font-size: 12px; }
.domain .refs a { font-weight: 600; color: var(--color-accent-700); text-decoration: none; }
.domain .refs a:hover { text-decoration: underline; }
@media (max-width: 1024px) {
  .domain { grid-template-columns: 40px minmax(0, 1fr); row-gap: 14px; }
  .domain > :not(.n) { grid-column: 2; }
  .domain .refs { flex-direction: row; gap: 8px; }
}

.levels { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 2px solid var(--color-text); }
.level { padding: 16px 24px 0 0; display: flex; flex-direction: column; gap: 12px; }
.level h3 { font-size: 20px; }
.level ul { list-style: none; margin: 0; padding: 0; }
.level li { font-size: 14px; padding: 6px 0; border-bottom: var(--rule-thin); }
.languages {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px 24px;
  margin-top: 32px; border-top: var(--rule); padding-top: 16px; font-size: 14px;
}
.languages .meta { font-size: 14px; }
@media (max-width: 720px) {
  .levels, .languages { grid-template-columns: minmax(0, 1fr); }
  .level { padding-right: 0; padding-bottom: 16px; }
}

.eras { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.era { display: flex; flex-direction: column; gap: 8px; padding-right: 20px; }
.era .bar { height: 10px; background: var(--color-text); opacity: var(--op); margin-right: -20px; }
.era .when { font-size: 13px; font-weight: 600; margin-top: 8px; }
.era h3 { font-size: 19px; line-height: 1.15; }
.era p { font-size: 13px; }
@media (max-width: 720px) {
  .eras { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 28px; }
}

/* ══════════════ Casi ══════════════ */
.filters { padding: 0 var(--gutter) 24px; display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.filters[hidden] { display: none; }
.filters .meta { margin-right: 8px; }
.filter {
  padding: 7px 12px; font: inherit; font-size: 13px; cursor: pointer;
  border: var(--rule-thin); border-radius: var(--radius-md);
  background: transparent; color: var(--color-text);
}
.filter:hover { border-color: var(--color-text); }
.filter[aria-pressed='true'] { background: var(--color-text); color: var(--color-bg); border-color: var(--color-text); }
.filters .count { margin-left: auto; font-size: 13px; }

/* Cards draw their own right/bottom rules; the grid clips the outer right edge,
   so an odd number of visible cards still leaves a clean last row. */
.case-grid {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: var(--rule); overflow: hidden;
}
.case {
  padding: 32px var(--gutter); border-right: var(--rule); border-bottom: var(--rule); margin-right: -2px;
  display: flex; flex-direction: column; gap: 14px; scroll-margin-top: 24px;
}
.case[hidden] { display: none; }
.case:target { background: var(--color-surface); }
.case .top { display: flex; justify-content: space-between; gap: 12px; font-size: 12px; }
.case h3 { font-size: 22px; line-height: 1.15; }
.case dl {
  display: grid; grid-template-columns: 90px minmax(0, 1fr); gap: 8px 16px; margin: 0;
  font-size: 14px; border-top: var(--rule-thin); padding-top: 14px;
}
.case dt { font-size: 12px; color: var(--color-neutral-700); }
.case dd { margin: 0; }
.case dd.strong { font-weight: 600; }
@media (max-width: 900px) { .case-grid { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 480px) { .case dl { grid-template-columns: minmax(0, 1fr); gap: 2px; } .case dd { margin-bottom: 8px; } }