/* ============================================================
   calcolatriceoraria.com — Design system "Quadrante"
   Inspired by the Solari di Udine flip-clock (Italian design)
   System fonts only → zero render-blocking, perfect CWV
   ============================================================ */
:root{
  --ink:#17181c;
  --ink-2:#3a3d45;
  --paper:#f2f1ec;
  --card:#ffffff;
  --flap:#1d1f24;
  --flap-2:#26282e;
  --digit:#f8f7f3;
  --accent:#c8401a;          /* rosso segnale FS */
  --accent-dark:#a33312;
  --line:#d9d7cf;
  --ok:#1f7a4d;
  --radius:10px;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,"SF Mono","Cascadia Mono","Segoe UI Mono",Menlo,Consolas,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
body{font-family:var(--sans);background:var(--paper);color:var(--ink);line-height:1.65;font-size:17px}
img,svg{max-width:100%;height:auto}
a{color:var(--accent-dark)}
a:hover{color:var(--accent)}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{max-width:1060px;margin:0 auto;padding:0 20px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;z-index:100}
.skip-link:focus{left:8px;top:8px}

/* ---------- Header ---------- */
.site-header{background:var(--flap);color:var(--digit);border-bottom:4px solid var(--accent)}
.site-header .container{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;flex-wrap:wrap;padding-top:8px;padding-bottom:8px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--digit);font-weight:800;font-size:1.15rem;letter-spacing:-.01em}
.brand .tick{font-family:var(--mono);background:var(--accent);color:#fff;padding:3px 8px;border-radius:6px;font-size:.95rem;font-weight:700}
.brand span b{color:var(--accent);font-weight:800}
.main-nav{display:flex;gap:4px;flex-wrap:wrap}
.main-nav a{color:#cfd0d6;text-decoration:none;font-size:.92rem;font-weight:600;padding:8px 12px;border-radius:8px}
.main-nav a:hover,.main-nav a[aria-current="page"]{background:var(--flap-2);color:#fff}
.main-nav a[aria-current="page"]{box-shadow:inset 0 -3px 0 var(--accent)}

/* ---------- Hero ---------- */
.hero{padding:40px 0 8px;text-align:center}
.hero h1{font-size:clamp(1.7rem,4.4vw,2.6rem);letter-spacing:-.02em;line-height:1.15;font-weight:800}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero p.lead{max-width:760px;margin:14px auto 0;color:var(--ink-2);font-size:1.06rem}

/* ---------- Calculator card ---------- */
.calc{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 10px 30px rgba(23,24,28,.07);margin:28px auto 0;max-width:880px;overflow:hidden}
.tabs{display:flex;flex-wrap:wrap;background:var(--flap);padding:8px 8px 0;gap:4px}
.tab-btn{appearance:none;border:0;background:transparent;color:#b9bbc3;font:inherit;font-weight:700;font-size:.92rem;padding:11px 14px;border-radius:8px 8px 0 0;cursor:pointer}
.tab-btn:hover{color:#fff;background:var(--flap-2)}
.tab-btn[aria-selected="true"]{background:var(--card);color:var(--ink)}
.panel{padding:26px 24px 28px;display:none}
.panel.is-active{display:block}
.panel h2{font-size:1.15rem;margin-bottom:4px}
.panel .hint{color:var(--ink-2);font-size:.92rem;margin-bottom:18px}

.field{display:flex;flex-direction:column;gap:6px}
.field label{font-weight:700;font-size:.88rem}
.field input,.field select{font:inherit;font-family:var(--mono);padding:11px 12px;border:1.5px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);width:100%}
.field input:focus,.field select:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 3px rgba(200,64,26,.15)}
.grid{display:grid;gap:14px}
.grid.cols-2{grid-template-columns:repeat(2,1fr)}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}
.grid.cols-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:640px){.grid.cols-3,.grid.cols-4{grid-template-columns:repeat(2,1fr)}.grid.cols-2{grid-template-columns:1fr}}

.row-list{display:flex;flex-direction:column;gap:10px;margin-bottom:14px}
.time-row{display:grid;grid-template-columns:90px 1fr 1fr 1fr 42px;gap:10px;align-items:end}
@media(max-width:640px){.time-row{grid-template-columns:70px 1fr 1fr 1fr 38px;gap:6px}}
.btn{appearance:none;border:0;font:inherit;font-weight:800;cursor:pointer;border-radius:9px;padding:13px 22px}
.btn-primary{background:var(--accent);color:#fff;font-size:1.02rem;letter-spacing:.01em;width:100%;margin-top:16px;box-shadow:0 4px 0 var(--accent-dark);transition:transform .06s ease}
.btn-primary:hover{background:#d9491f}
.btn-primary:active{transform:translateY(2px);box-shadow:0 2px 0 var(--accent-dark)}
.btn-ghost{background:transparent;border:1.5px dashed var(--line);color:var(--ink-2);padding:10px 16px;font-weight:700;font-size:.9rem}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-x{background:#f3f2ee;color:var(--ink-2);border-radius:8px;padding:0;height:44px;font-size:1.1rem;line-height:1}
.btn-x:hover{background:#e9e7e0;color:var(--accent)}
.seg{display:inline-flex;background:#f0efe9;border:1px solid var(--line);border-radius:9px;padding:3px;gap:3px;margin-bottom:16px}
.seg button{appearance:none;border:0;background:transparent;font:inherit;font-weight:700;font-size:.9rem;padding:8px 14px;border-radius:7px;cursor:pointer;color:var(--ink-2)}
.seg button[aria-pressed="true"]{background:var(--flap);color:#fff}

/* ---------- Flip-clock result (signature element) ---------- */
.result{margin-top:22px;display:none}
.result.show{display:block;animation:pop .25s ease}
@keyframes pop{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.flap-board{background:var(--flap);border-radius:12px;padding:22px 18px 18px;text-align:center;position:relative;overflow:hidden}
.flap-board::after{content:"";position:absolute;left:0;right:0;top:50%;height:2px;background:rgba(0,0,0,.45);pointer-events:none}
.flap-label{color:#9a9ca5;font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.14em;margin-bottom:10px}
.flap-digits{font-family:var(--mono);font-weight:700;font-size:clamp(2.2rem,8vw,3.6rem);color:var(--digit);letter-spacing:.04em;display:inline-flex;gap:.12em;align-items:baseline}
.flap-digits .unit{font-size:.38em;color:var(--accent);font-weight:800;letter-spacing:.06em}
.flap-sub{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:14px}
.flap-chip{font-family:var(--mono);font-size:.88rem;background:var(--flap-2);color:#d8d9de;border:1px solid #34363d;border-radius:7px;padding:6px 12px}
.flap-chip b{color:#fff}
.result-actions{display:flex;gap:10px;justify-content:center;margin-top:12px}
.copy-btn{background:#fff;border:1.5px solid var(--line);color:var(--ink-2);font-size:.85rem;font-weight:700;padding:8px 14px;border-radius:8px;cursor:pointer}
.copy-btn:hover{border-color:var(--accent);color:var(--accent)}
.error-msg{display:none;margin-top:14px;background:#fdecea;border:1px solid #f5c6c0;color:#9c2412;border-radius:8px;padding:10px 14px;font-size:.92rem;font-weight:600}
.error-msg.show{display:block}

/* ---------- Timesheet table ---------- */
.ts-table{width:100%;border-collapse:collapse;font-size:.92rem}
.ts-table th{text-align:left;font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-2);padding:6px 6px;border-bottom:2px solid var(--line)}
.ts-table td{padding:6px 4px;border-bottom:1px solid #ecebe5}
.ts-table input{font-family:var(--mono);font-size:.95rem;width:100%;padding:9px 8px;border:1.5px solid var(--line);border-radius:7px}
.ts-table input:focus{border-color:var(--accent);outline:none}
.ts-table .day-name{font-weight:700;white-space:nowrap}
.ts-table .day-total{font-family:var(--mono);font-weight:700;white-space:nowrap;text-align:right}
@media(max-width:700px){
  .ts-table thead{display:none}
  .ts-table tr{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;padding:10px 0;border-bottom:1px solid var(--line)}
  .ts-table td{border:0;padding:0}
  .ts-table .day-name{grid-column:1/3;align-self:center}
  .ts-table .day-total{align-self:center}
  .ts-table td[data-l]::before{content:attr(data-l);display:block;font-size:.7rem;font-weight:700;text-transform:uppercase;color:var(--ink-2);margin-bottom:2px}
}

/* ---------- Content sections ---------- */
.content{max-width:880px;margin:0 auto;padding:46px 0 10px}
.content h2{font-size:1.5rem;letter-spacing:-.01em;margin:38px 0 14px;padding-top:8px}
.content h2:first-child{margin-top:0}
.content h3{font-size:1.12rem;margin:26px 0 10px}
.content p{margin-bottom:14px;color:var(--ink-2)}
.content p strong,.content li strong{color:var(--ink)}
.content ul,.content ol{margin:0 0 16px 24px;color:var(--ink-2)}
.content li{margin-bottom:8px}
.content .example{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:8px;padding:16px 18px;margin:18px 0;font-size:.95rem}
.content .example code{font-family:var(--mono);background:#f0efe9;padding:2px 6px;border-radius:5px;font-size:.9em}
.content table{width:100%;border-collapse:collapse;margin:18px 0;background:var(--card);border:1px solid var(--line);border-radius:8px;overflow:hidden;font-size:.93rem}
.content th{background:var(--flap);color:#fff;text-align:left;padding:10px 14px;font-size:.85rem}
.content td{padding:9px 14px;border-bottom:1px solid #ecebe5;color:var(--ink-2)}
.content td:first-child{font-family:var(--mono);font-weight:600;color:var(--ink)}

/* FAQ accordion */
.faq details{background:var(--card);border:1px solid var(--line);border-radius:9px;margin-bottom:10px;overflow:hidden}
.faq summary{cursor:pointer;font-weight:700;padding:15px 18px;list-style:none;position:relative;padding-right:44px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:16px;top:50%;transform:translateY(-50%);font-family:var(--mono);font-size:1.3rem;color:var(--accent);font-weight:700}
.faq details[open] summary::after{content:"−"}
.faq details>div{padding:0 18px 16px;color:var(--ink-2);font-size:.96rem}

/* Tool cards */
.tool-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:18px 0}
@media(max-width:700px){.tool-cards{grid-template-columns:1fr}}
.tool-card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:18px;text-decoration:none;display:block;transition:transform .12s ease,box-shadow .12s ease}
.tool-card:hover{transform:translateY(-3px);box-shadow:0 10px 24px rgba(23,24,28,.1)}
.tool-card .tc-time{font-family:var(--mono);font-weight:700;color:var(--accent);font-size:.9rem;background:#faf3f0;display:inline-block;padding:3px 9px;border-radius:6px;margin-bottom:10px}
.tool-card h3{font-size:1.04rem;color:var(--ink);margin-bottom:6px}
.tool-card p{color:var(--ink-2);font-size:.9rem;margin:0}

/* Breadcrumb */
.crumbs{font-size:.85rem;color:var(--ink-2);padding:18px 0 0}
.crumbs ol{list-style:none;display:flex;gap:8px;flex-wrap:wrap;margin:0}
.crumbs li+li::before{content:"›";margin-right:8px;color:#b3b1a8}
.crumbs a{color:var(--ink-2);text-decoration:none}
.crumbs a:hover{color:var(--accent)}

/* ---------- Footer ---------- */
.site-footer{background:var(--flap);color:#b9bbc3;margin-top:64px;border-top:4px solid var(--accent)}
.site-footer .container{padding:36px 20px 28px;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:28px}
@media(max-width:700px){.site-footer .container{grid-template-columns:1fr}}
.site-footer h4{color:#fff;font-size:.92rem;text-transform:uppercase;letter-spacing:.08em;margin-bottom:12px}
.site-footer ul{list-style:none}
.site-footer li{margin-bottom:8px}
.site-footer a{color:#b9bbc3;text-decoration:none;font-size:.92rem}
.site-footer a:hover{color:#fff}
.site-footer p{font-size:.9rem;line-height:1.6}
.footer-bottom{border-top:1px solid #34363d;text-align:center;padding:14px 20px;font-size:.82rem;color:#84868f}

/* ---------- EEAT additions ---------- */
.updated-date{font-size:.85rem;color:#84868f;margin-top:12px}
.updated-date b{color:var(--ink-2)}
.sources{background:var(--card);border:1px solid var(--line);border-radius:9px;padding:16px 18px;margin:26px 0 0;font-size:.88rem;color:var(--ink-2)}
.sources h2{font-size:1rem;margin:0 0 8px;padding:0}

/* ---------- Print (timesheet) ---------- */
@media print{
  .site-header,.site-footer,.main-nav,.crumbs,.btn,.copy-btn,.result-actions,.skip-link,.content .faq,.tool-cards{display:none!important}
  body{background:#fff;font-size:12pt}
  .calc{box-shadow:none;border:1px solid #999}
  .flap-board{background:#fff!important;border:2px solid #000}
  .flap-board::after{display:none}
  .flap-digits,.flap-label{color:#000!important}
  .flap-chip{background:#fff;color:#000;border:1px solid #666}
  .flap-digits .unit{color:#000}
  .hero h1{font-size:18pt}
  .hero p.lead{display:none}
}