/* ==========================================================================
   Manufatura Enxuta / Lean Hub — Global Stylesheet
   Design language: "shop-floor / andon board" — station plates, hairline
   blueprint rules, andon status strip. Built for speed: no framework.
   ========================================================================== */

:root{
  /* -- Color tokens -- */
  --graphite-900:#1B1F23;
  --graphite-800:#242A30;
  --graphite-700:#333B42;
  --steel-100:#F1F2EE;
  --paper:#FAFAF8;
  --line:#DAD9D2;
  --ink:#1B1F23;
  --ink-soft:#4B535A;
  --kaizen-red:#C23B22;
  --kaizen-red-dark:#9C2F1B;
  --andon-green:#2F7A4D;
  --andon-yellow:#E8A93B;

  /* -- Type -- */
  --font-display:'Oswald', 'Arial Narrow', sans-serif;
  --font-body:'Inter', -apple-system, Segoe UI, Roboto, sans-serif;
  --font-mono:'IBM Plex Mono', 'Courier New', monospace;

  --radius:2px;
  --maxw:1180px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--paper);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--kaizen-red-dark);text-decoration:none;}
a:hover{text-decoration:underline;}
h1,h2,h3,h4{
  font-family:var(--font-display);
  text-transform:uppercase;
  letter-spacing:.02em;
  line-height:1.15;
  color:var(--graphite-900);
  margin:0 0 .5em;
}
h1{font-size:clamp(2rem,4vw,3.4rem);}
h2{font-size:clamp(1.5rem,2.6vw,2.1rem);}
h3{font-size:1.25rem;}
p{margin:0 0 1.1em;}
:focus-visible{outline:3px solid var(--kaizen-red);outline-offset:2px;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;}

/* -- Andon status strip: signature divider element -- */
.andon-strip{display:flex;height:6px;width:100%;}
.andon-strip span{flex:1;}
.andon-strip .g{background:var(--andon-green);}
.andon-strip .y{background:var(--andon-yellow);}
.andon-strip .r{background:var(--kaizen-red);}

/* -- Header -- */
.site-header{background:var(--graphite-900);color:#fff;position:sticky;top:0;z-index:50;}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:72px;}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-family:var(--font-display);font-size:1.25rem;letter-spacing:.03em;text-transform:uppercase;}
.brand:hover{text-decoration:none;}
.brand .mark{width:30px;height:30px;background:var(--kaizen-red);display:flex;align-items:center;justify-content:center;font-family:var(--font-mono);font-weight:700;color:#fff;font-size:.85rem;border-radius:1px;}
.brand small{display:block;font-family:var(--font-body);text-transform:none;letter-spacing:0;font-size:.62rem;color:#9AA3AA;font-weight:400;}
nav.main-nav ul{list-style:none;display:flex;gap:28px;margin:0;padding:0;}
nav.main-nav a{color:#D8DBDD;font-size:.86rem;text-transform:uppercase;letter-spacing:.06em;font-weight:600;}
nav.main-nav a:hover,nav.main-nav a.active{color:#fff;text-decoration:none;border-bottom:2px solid var(--kaizen-red);}
.lang-switch{display:flex;gap:6px;margin-left:24px;}
.lang-switch a{font-family:var(--font-mono);font-size:.72rem;color:#9AA3AA;border:1px solid #444C52;padding:3px 7px;border-radius:2px;}
.lang-switch a.active,.lang-switch a:hover{color:#fff;border-color:var(--kaizen-red);text-decoration:none;}
.nav-toggle{display:none;background:none;border:1px solid #444C52;color:#fff;width:40px;height:36px;border-radius:2px;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:4px;}
.nav-toggle span{display:block;width:18px;height:2px;background:#fff;}

/* -- Hero -- */
.hero{background:var(--graphite-900);color:#fff;padding:64px 0 56px;position:relative;}
.hero .eyebrow{font-family:var(--font-mono);color:var(--andon-yellow);font-size:.8rem;text-transform:uppercase;letter-spacing:.12em;margin-bottom:14px;}
.hero h1{color:#fff;max-width:820px;}
.hero p.lede{color:#C7CCCF;font-size:1.15rem;max-width:640px;margin-top:16px;}
.hero .cta-row{margin-top:28px;display:flex;gap:14px;flex-wrap:wrap;}

/* -- Buttons -- */
.btn{display:inline-block;font-family:var(--font-body);font-weight:700;font-size:.88rem;text-transform:uppercase;letter-spacing:.05em;padding:13px 24px;border-radius:2px;border:2px solid transparent;}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--kaizen-red);color:#fff;}
.btn-primary:hover{background:var(--kaizen-red-dark);}
.btn-ghost{border-color:#5A6167;color:#fff;}
.btn-ghost:hover{border-color:#fff;}

/* -- Section scaffolding -- */
section{padding:56px 0;}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:20px;margin-bottom:30px;border-bottom:1px solid var(--line);padding-bottom:14px;flex-wrap:wrap;}
.section-head .tag{font-family:var(--font-mono);font-size:.75rem;color:var(--kaizen-red-dark);text-transform:uppercase;letter-spacing:.1em;}

/* -- Card grid (article cards) -- */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
@media(max-width:900px){.grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:640px){.grid{grid-template-columns:1fr;}}
.card{background:#fff;border:1px solid var(--line);display:flex;flex-direction:column;transition:box-shadow .15s,transform .15s;}
.card:hover{box-shadow:0 8px 24px rgba(27,31,35,.09);transform:translateY(-2px);}
.card img{aspect-ratio:16/10;object-fit:cover;background:var(--steel-100);}
.card .body{padding:18px 20px 22px;flex:1;display:flex;flex-direction:column;}
.card .cat{font-family:var(--font-mono);font-size:.68rem;color:var(--kaizen-red-dark);text-transform:uppercase;letter-spacing:.08em;margin-bottom:8px;}
.card h3{font-size:1.05rem;margin-bottom:10px;}
.card h3 a{color:var(--graphite-900);}
.card h3 a:hover{color:var(--kaizen-red-dark);text-decoration:none;}
.card p{color:var(--ink-soft);font-size:.92rem;flex:1;}
.card .meta{font-size:.76rem;color:#8A9096;margin-top:10px;font-family:var(--font-mono);}

/* -- Station plate (numbered process content — used only for real sequences: 5S steps, TPS pillars, JIT flow) -- */
.station{display:flex;gap:18px;border:1px solid var(--line);background:#fff;padding:20px;margin-bottom:16px;align-items:flex-start;}
.station .num{font-family:var(--font-mono);font-weight:700;background:var(--graphite-900);color:#fff;min-width:52px;height:52px;display:flex;align-items:center;justify-content:center;font-size:1.1rem;flex-shrink:0;}
.station h4{margin:0 0 6px;text-transform:none;font-family:var(--font-body);font-size:1.05rem;font-weight:700;}
.station p{margin:0;color:var(--ink-soft);font-size:.95rem;}

/* -- Category chips -- */
.chips{display:flex;flex-wrap:wrap;gap:8px;}
.chip{font-family:var(--font-mono);font-size:.74rem;text-transform:uppercase;letter-spacing:.04em;border:1px solid var(--line);padding:6px 12px;color:var(--ink-soft);background:#fff;}
.chip:hover{border-color:var(--kaizen-red);color:var(--kaizen-red-dark);text-decoration:none;}

/* -- Article page -- */
.article-header{background:var(--graphite-900);color:#fff;padding:44px 0 36px;}
.breadcrumb{font-family:var(--font-mono);font-size:.75rem;color:#9AA3AA;margin-bottom:16px;}
.breadcrumb a{color:#C7CCCF;}
.article-header h1{color:#fff;max-width:880px;}
.article-meta{display:flex;gap:18px;flex-wrap:wrap;color:#9AA3AA;font-family:var(--font-mono);font-size:.78rem;margin-top:18px;}
.article-body{max-width:760px;margin:0 auto;padding:48px 24px 20px;}
.article-body h2{margin-top:1.6em;font-size:1.5rem;}
.article-body h3{margin-top:1.2em;}
.article-body p{color:var(--ink-soft);font-size:1.05rem;}
.article-body ul,.article-body ol{color:var(--ink-soft);font-size:1.05rem;padding-left:1.3em;}
.article-body li{margin-bottom:.5em;}
.article-body img{margin:1.4em 0;border:1px solid var(--line);}
.article-body figcaption{font-family:var(--font-mono);font-size:.78rem;color:#8A9096;margin-top:8px;}
.article-body a{border-bottom:1px solid currentColor;}
.toc{background:var(--steel-100);border:1px solid var(--line);padding:20px 24px;margin:1.6em 0;}
.toc .tag{font-family:var(--font-mono);font-size:.72rem;text-transform:uppercase;color:var(--kaizen-red-dark);letter-spacing:.08em;}
.toc ol{margin:.6em 0 0;padding-left:1.1em;font-size:.94rem;}
.pull-quote{border-left:4px solid var(--kaizen-red);padding:4px 0 4px 20px;margin:1.8em 0;font-family:var(--font-display);font-size:1.15rem;text-transform:none;letter-spacing:0;color:var(--graphite-900);}
.ad-slot{background:var(--steel-100);border:1px dashed var(--line);text-align:center;padding:14px;font-family:var(--font-mono);font-size:.72rem;color:#8A9096;text-transform:uppercase;letter-spacing:.08em;margin:1.8em 0;}
.cta-box{background:var(--graphite-900);color:#fff;padding:32px;text-align:center;margin:2.4em 0 1em;}
.cta-box h3{color:#fff;margin-bottom:10px;}
.cta-box p{color:#C7CCCF;margin-bottom:18px;}

/* -- Related / internal links -- */
.related{background:var(--steel-100);}

/* -- Footer -- */
footer.site-footer{background:var(--graphite-900);color:#9AA3AA;padding:48px 0 24px;margin-top:60px;}
footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;padding-bottom:30px;border-bottom:1px solid #363D43;}
@media(max-width:800px){footer .cols{grid-template-columns:1fr 1fr;}}
footer h5{color:#fff;font-family:var(--font-mono);font-size:.76rem;text-transform:uppercase;letter-spacing:.08em;margin-bottom:14px;}
footer ul{list-style:none;padding:0;margin:0;}
footer li{margin-bottom:8px;}
footer a{color:#9AA3AA;font-size:.88rem;}
footer a:hover{color:#fff;}
.footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;padding-top:20px;font-size:.78rem;font-family:var(--font-mono);}

/* -- 404 -- */
.error-page{background:var(--graphite-900);color:#fff;min-height:60vh;display:flex;align-items:center;}
.error-page .code{font-family:var(--font-mono);color:var(--kaizen-red);font-size:5rem;line-height:1;}

@media(max-width:800px){
  nav.main-nav{display:none;position:absolute;top:72px;left:0;right:0;background:var(--graphite-900);border-top:1px solid #363D43;padding:8px 0;}
  nav.main-nav.open{display:block;}
  nav.main-nav ul{flex-direction:column;gap:0;}
  nav.main-nav li{border-bottom:1px solid #2E343B;}
  nav.main-nav a{display:block;padding:14px 24px;}
  nav.main-nav a.active{border-bottom:none;background:var(--graphite-800);}
  .nav-toggle{display:flex;}
  .lang-switch{margin-left:auto;}
}

/* -- Author box -- */
.author-box{display:flex;gap:18px;align-items:flex-start;border:1px solid var(--line);background:#fff;padding:22px;margin:2.6em 0 0;}
.author-box img{width:76px;height:76px;border-radius:50%;flex-shrink:0;border:none !important;margin:0 !important;object-fit:cover;}
.author-box .ab-label{font-family:var(--font-mono);font-size:.68rem;color:#8A9096;text-transform:uppercase;letter-spacing:.1em;margin:0 0 4px;}
.author-box .ab-name{font-family:var(--font-display);font-size:1.1rem;color:var(--ink);margin:0 0 2px;}
.author-box .ab-name a{border-bottom:none;color:inherit;}
.author-box .ab-role{font-family:var(--font-mono);font-size:.72rem;color:var(--andon-green);text-transform:uppercase;letter-spacing:.06em;margin:0 0 10px;}
.author-box p{font-size:.92rem;line-height:1.55;margin:0 0 10px;}
.author-box .ab-links a{font-family:var(--font-mono);font-size:.78rem;margin-right:16px;}
@media (max-width:520px){.author-box{flex-direction:column;}}