/* Materia — osservatorio materie prime. Carta calda, inchiostro, numeri in mono. */
:root {
  --bg: #f5f1e8; --paper: #fbf9f4; --ink: #171511; --muted: #6f685c; --line: #e3ddd0;
  --accent: #c9821b; --up: #1f7a4d; --down: #b4321f; --hot: #c9821b;
  --serif: "Fraunces", Georgia, serif; --sans: "IBM Plex Sans", system-ui, sans-serif; --mono: "IBM Plex Mono", ui-monospace, monospace;
  --r: 10px; --cat: var(--accent);
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #12110e; --paper: #1b1a16; --ink: #ede8dc; --muted: #9a9283; --line: #2c2a24;
    --accent: #e9a23b; --up: #4fbf85; --down: #ef6b55; --hot: #e9a23b; }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.55 var(--sans); }
a { color: inherit; }
.wrap { max-width: 1240px; margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .wrap { padding: 0 28px; } }
.mono { font-family: var(--mono); font-feature-settings: "tnum"; }
.muted { color: var(--muted); }
.small { font-size: 12.5px; }
.up { color: var(--up); } .down { color: var(--down); } .hot { color: var(--hot); font-weight: 500; }
.eyebrow { font: 500 12px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin: 0 0 14px; }
.eyebrow a { text-decoration: none; color: var(--cat); }

/* masthead */
.masthead { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.masthead__row { display: flex; align-items: center; justify-content: space-between; height: 58px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font: 800 22px/1 var(--serif); letter-spacing: -.01em; }
.brand svg { width: 26px; height: 26px; fill: none; stroke: var(--accent); stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.nav { display: flex; gap: 4px; }
.nav a { text-decoration: none; padding: 7px 12px; border-radius: 999px; font-weight: 500; font-size: 14px; color: var(--muted); }
.nav a:hover { color: var(--ink); }
.nav a[aria-current] { background: var(--ink); color: var(--bg); }

.tape { overflow: hidden; border-top: 1px solid var(--line); font: 12.5px/1 var(--mono); }
.tape__track { display: flex; width: max-content; animation: tape 90s linear infinite; }
.tape:hover .tape__track { animation-play-state: paused; }
.tape__item { display: flex; gap: 8px; padding: 9px 18px; white-space: nowrap; text-decoration: none; border-right: 1px solid var(--line); }
.tape__item > span:first-child { color: var(--muted); }
@keyframes tape { to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) { .tape__track { animation: none; } }

.demo-banner { background: var(--ink); color: var(--bg); text-align: center; font-size: 13px; padding: 8px 16px; }

/* hero */
.hero { padding: 56px 16px 28px; }
.hero--compact { padding-bottom: 8px; }
.hero h1 { font: 600 clamp(36px, 6vw, 68px)/1.02 var(--serif); letter-spacing: -.025em; margin: 0 0 18px; }
.hero h1 em { font-style: italic; font-weight: 400; color: var(--accent); }
.lede { max-width: 640px; font-size: 17px; color: var(--muted); margin: 0 0 32px; }
.note { max-width: 820px; background: var(--paper); border: 1px solid var(--line); border-left: 3px solid var(--accent); padding: 14px 18px; border-radius: 6px; font-size: 14px; margin-bottom: 24px; }

.movers { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
@media (min-width: 860px) { .movers { grid-template-columns: repeat(3, 1fr); } }
.movers__col { background: var(--paper); padding: 18px 20px; }
.mini { font: 500 12px/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 0 0 12px; }
.movers__list { list-style: none; margin: 0; padding: 0; counter-reset: m; }
.movers__list li { display: flex; justify-content: space-between; gap: 10px; padding: 6px 0; border-top: 1px dashed var(--line); font-size: 14px; }
.movers__list li:first-child { border-top: 0; }
.movers__list a { text-decoration: none; font-weight: 500; }
.movers__list a:hover { text-decoration: underline; }
.movers__list .muted { font-size: 12px; }

/* chips */
.chips { display: flex; flex-wrap: wrap; gap: 8px; padding-top: 20px; padding-bottom: 8px; position: sticky; top: 58px; z-index: 5; }
.chip { border: 1px solid var(--line); background: var(--paper); color: var(--ink); padding: 7px 14px; border-radius: 999px; font: 500 13px var(--sans); cursor: pointer; }
.chip::before { content: ""; display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--cat, var(--ink)); margin-right: 8px; vertical-align: 1px; }
.chip.is-on { background: var(--ink); color: var(--bg); border-color: var(--ink); }

/* categorie */
.cat { padding: 36px 0 8px; scroll-margin-top: 110px; }
.cat__head { display: flex; align-items: baseline; gap: 12px; border-bottom: 2px solid var(--ink); padding-bottom: 10px; margin-bottom: 18px; flex-wrap: wrap; }
.cat__head h2 { font: 600 28px/1.1 var(--serif); margin: 0; letter-spacing: -.01em; }
.cat__head h2::before { content: ""; display: inline-block; width: 12px; height: 12px; background: var(--cat); border-radius: 3px; margin-right: 12px; vertical-align: 3px; }
.cat__count { color: var(--muted); font-size: 13px; }
.cat__link { margin-left: auto; font-size: 13px; color: var(--muted); text-decoration: none; }
.cat__link:hover { color: var(--cat); }

.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); }
.card { display: block; background: var(--paper); border: 1px solid var(--line); border-radius: var(--r); padding: 16px 16px 12px; text-decoration: none; transition: transform .15s, box-shadow .15s, border-color .15s; position: relative; overflow: hidden; }
.card::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--cat); opacity: .8; }
.card:hover { transform: translateY(-2px); border-color: color-mix(in srgb, var(--cat) 40%, var(--line)); box-shadow: 0 8px 24px -14px rgba(0,0,0,.35); }
.card__top { display: flex; justify-content: space-between; gap: 8px; align-items: baseline; }
.card__top h3 { margin: 0; font: 600 16px/1.25 var(--sans); }
.card__top .mono { font-size: 11.5px; }
.card__price { margin: 8px 0 4px; display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.big { font-size: 24px; font-weight: 500; letter-spacing: -.02em; }
.unit { font-size: 12px; }

.spark { width: 100%; height: 56px; display: block; margin: 4px 0 8px; }
.spark--row { width: 120px; height: 34px; margin: 0; }
.spark__line { fill: none; stroke-width: 1.6; vector-effect: non-scaling-stroke; stroke-linejoin: round; }
.spark__area { stroke: none; opacity: .14; }
.spark.is-up .spark__line { stroke: var(--up); } .spark.is-up .spark__area { fill: var(--up); }
.spark.is-down .spark__line { stroke: var(--down); } .spark.is-down .spark__area { fill: var(--down); }

.card__stats { display: grid; grid-template-columns: repeat(4, 1fr); margin: 0; border-top: 1px solid var(--line); padding-top: 9px; }
.card__stats dt { font: 500 10.5px/1 var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin-bottom: 4px; }
.card__stats dd { margin: 0; font-size: 13px; }
.chg { font-family: var(--mono); font-feature-settings: "tnum"; font-weight: 500; }

/* dettaglio */
.detail { padding-top: 40px; padding-bottom: 40px; }
.detail__head { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 22px; }
.detail__head h1 { font: 600 clamp(34px, 5vw, 56px)/1 var(--serif); letter-spacing: -.025em; margin: 0; }
.detail__price { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.huge { font-size: 36px; font-weight: 500; letter-spacing: -.02em; }
.strip { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; margin: 0 0 18px; }
.strip > div { background: var(--paper); padding: 12px 14px; }
.strip dt { font: 500 11px/1.2 var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin-bottom: 6px; }
.strip dd { margin: 0; font-size: 17px; }

.panel { background: var(--paper); border: 1px solid var(--line); border-radius: var(--r); padding: 18px 20px; margin-bottom: 18px; }
.panel__head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 10px; margin-bottom: 12px; }
.panel h2 { font: 600 20px/1.2 var(--serif); margin: 0; }
.panel__head a { font-size: 13px; color: var(--muted); }
.chartbox { position: relative; height: 380px; }
.chartbox--sm { height: 260px; }
@media (max-width: 600px) { .chartbox { height: 280px; } }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.seg button { border: 0; background: transparent; color: var(--muted); font: 500 12.5px var(--mono); padding: 7px 11px; cursor: pointer; }
.seg button + button { border-left: 1px solid var(--line); }
.seg button.is-on { background: var(--ink); color: var(--bg); }
.two { display: grid; gap: 18px; }
@media (min-width: 900px) { .two { grid-template-columns: 1.6fr 1fr; } }
.two .panel { margin-bottom: 0; }
.two + .panel { margin-top: 18px; }
.callout { border-top: 3px solid var(--cat); }
.callout__big { font-size: 40px; font-weight: 500; margin: 10px 0 8px; color: var(--cat); }
.badge { display: inline-block; font: 500 11px/1 var(--mono); padding: 4px 8px; border-radius: 999px; border: 1px solid currentColor; white-space: nowrap; }
.badge.hot { background: color-mix(in srgb, var(--hot) 14%, transparent); }
.related { list-style: none; margin: 0; padding: 0; }
.related li { padding: 9px 0; border-top: 1px dashed var(--line); }
.related li:first-child { border-top: 0; }

/* screener */
.tablewrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r); background: var(--paper); }
.sc { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 900px; }
.sc th { font: 500 11px/1.2 var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--muted); text-align: left; padding: 12px 12px; border-bottom: 1px solid var(--line); white-space: nowrap; }
.sc td { padding: 12px; border-top: 1px solid var(--line); vertical-align: middle; }
.sc tbody tr:first-child td { border-top: 0; }
.sc tbody tr:hover { background: color-mix(in srgb, var(--cat) 5%, transparent); }
.sc .num { text-align: right; }
.score { display: inline-block; width: 64px; height: 6px; background: var(--line); border-radius: 3px; overflow: hidden; vertical-align: middle; margin-right: 8px; }
.score span { display: block; height: 100%; background: var(--cat); }
.fine { margin: 28px 0 10px; max-width: 900px; }
@media (max-width: 700px) { .hide-sm { display: none; } .sc { min-width: 720px; } }

/* prose */
.prose { max-width: 760px; padding-top: 48px; padding-bottom: 48px; font-size: 16.5px; }
.prose h1 { font: 600 52px/1.05 var(--serif); letter-spacing: -.02em; margin: 0 0 24px; }
.prose h2 { font: 600 24px/1.2 var(--serif); margin: 36px 0 10px; }
.prose table { border-collapse: collapse; width: 100%; font-size: 14.5px; margin: 14px 0; }
.prose th, .prose td { border-bottom: 1px solid var(--line); padding: 9px 8px; text-align: left; }

/* footer */
.footer { border-top: 1px solid var(--line); margin-top: 48px; padding: 28px 0 40px; font-size: 13.5px; color: var(--muted); }
.footer strong { color: var(--ink); font-family: var(--serif); }
.footer__row { display: grid; gap: 14px; }
@media (min-width: 860px) { .footer__row { grid-template-columns: 1fr 1.3fr; } }
.footer__legal { margin: 0; font-size: 12.5px; }

/* stati di caricamento */
.card.is-loading .big, .card.is-loading .spark { opacity: .35; }
.card.is-loading .spark { background: linear-gradient(90deg, var(--line), transparent, var(--line)); background-size: 200% 100%; animation: shimmer 1.4s infinite; border-radius: 4px; }
.card.is-empty .big { font-size: 15px; color: var(--muted); }
@keyframes shimmer { to { background-position: -200% 0; } }
.chart-empty { position: absolute; inset: 0; display: grid; place-items: center; text-align: center; padding: 20px; margin: 0; }
.chart-empty[hidden] { display: none; }