/* ============================================================
   DECINOVA — Design System (Option C: Dark Hero + Light Body)
   ============================================================ */
:root{
  --dark:#1A1D21;--dark-elevated:#21252B;--dark-surface:#282D34;--dark-border:rgba(255,255,255,.08);--dark-text:#D4D8DD;--dark-muted:#8891A0;
  --light:#F8F6F1;--light-warm:#F0ECE3;--light-card:#FFFFFF;--light-border:rgba(0,0,0,.07);--light-border-strong:rgba(0,0,0,.12);
  --ink:#1A1A1A;--text:#555555;--text-muted:#888888;--text-on-dark:#C8C8C8;
  --emerald:#2D8264;--emerald-light:#3DA67E;--emerald-dark:#246E54;--emerald-faint:rgba(45,130,100,.06);--emerald-glow:rgba(45,130,100,.1);--emerald-border:rgba(45,130,100,.18);--amber:#D4940A;
  --font-display:'Source Serif 4',Georgia,serif;--font-body:'Albert Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;--font-mono:'JetBrains Mono','Fira Code',monospace;
  --ease-out:cubic-bezier(.16,1,.3,1);
  --anthracite:var(--dark);--anthracite-soft:var(--dark-elevated);--stone:var(--light);--stone-warm:var(--light-warm);--white:var(--light-card);--text-light:var(--text-muted);--text-faint:var(--text-muted);--stone-deep:var(--light-warm);--graphite:#4A4A4A;--anthracite-mid:var(--dark-surface);--emerald-glow:var(--emerald-glow);--red-soft:#C0392B
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font-body);font-weight:300;color:var(--text);background:var(--light);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,svg[role="img"]{max-width:100%;height:auto}
pre,code,[style*="font-mono"]{word-break:break-word;overflow-wrap:break-word}
table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;max-width:100%}
a{color:var(--emerald);text-decoration:none;transition:color .3s ease}
.container{max-width:1200px;margin:0 auto;padding:0 2rem;width:100%}
section{padding:5rem 0}
h1,h2,h3{font-family:var(--font-display);color:var(--ink);line-height:1.2}
h1{font-size:clamp(2rem,4vw,3rem);font-weight:500}
h2{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:500;margin-bottom:1.5rem}
h3{font-size:1.2rem;font-weight:500;margin-bottom:.8rem}
h4{font-size:1.05rem}
p{line-height:1.65;margin-bottom:1rem;font-size:.95rem}
.label{font-family:var(--font-mono);font-size:.58rem;letter-spacing:.22em;text-transform:uppercase;color:var(--emerald);margin-bottom:.5rem}
.skip-link{position:absolute;top:-100%;left:50%;transform:translateX(-50%);background:var(--emerald);color:#fff;padding:.8rem 1.5rem;font-size:.85rem;font-weight:500;z-index:9999;border-radius:0 0 4px 4px;transition:top .2s ease}
.skip-link:focus{top:0!important}

/* NAV */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;padding:1.1rem 0;transition:all .4s var(--ease-out)}
.nav:not(.scrolled){background:transparent}
.nav.scrolled{background:rgba(248,246,241,.95);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--light-border);padding:.7rem 0}
.nav.nav--hidden{transform:translateY(-100%)}
.nav__inner{max-width:1200px;margin:0 auto;padding:0 2rem;display:flex;align-items:center;justify-content:space-between}
.nav__logo{display:flex;align-items:center;gap:.5rem;text-decoration:none}
.nav__logo svg{width:28px;height:auto}
.nav__logo-text{font-family:var(--font-display);font-size:1.05rem;font-weight:500;color:#fff;transition:color .4s ease}
.nav.scrolled .nav__logo-text{color:var(--ink)}
.nav.scrolled .nav__logo svg path[stroke]{stroke:var(--emerald)}
.nav.scrolled .nav__logo svg path[fill="#2D8264"]{fill:var(--emerald)}
.nav__links{display:flex;align-items:center;gap:.15rem;list-style:none}
.nav__links li{list-style:none}
.nav__links li > a{font-family:var(--font-body);font-size:.8rem;font-weight:400;color:rgba(255,255,255,.7);padding:.5rem .8rem;text-decoration:none;transition:all .3s ease;border-radius:4px;display:inline-block}
.nav__links li > a:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav.scrolled .nav__links li > a{color:var(--text)}
.nav.scrolled .nav__links li > a:hover{color:var(--ink);background:rgba(0,0,0,.03)}
.nav__cta{background:var(--emerald)!important;color:#fff!important;padding:.5rem 1.1rem!important;border-radius:4px!important;font-weight:500!important;letter-spacing:.02em}
.nav__cta:hover{background:var(--emerald-dark)!important}
.nav__dropdown-trigger{cursor:pointer}
.nav__dropdown-wrap{position:relative}
.nav__dropdown{display:none;position:absolute;top:100%;left:0;background:var(--light-card);border:1px solid var(--light-border);border-radius:6px;padding:.5rem 0;min-width:220px;box-shadow:0 8px 30px rgba(0,0,0,.1);z-index:200}
.nav__dropdown-wrap:hover .nav__dropdown{display:block}
.nav__dropdown a{display:block;padding:.45rem 1.2rem;font-size:.78rem;color:var(--text)!important;text-decoration:none;transition:all .2s ease;background:transparent!important}
.nav__dropdown a:hover{background:var(--emerald-faint)!important;color:var(--emerald)!important}
.nav__burger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px;background:none;border:none;min-width:44px;min-height:44px;align-items:center;justify-content:center}
.nav__burger span{width:20px;height:1.5px;background:#fff;transition:all .3s ease}
.nav.scrolled .nav__burger span{background:var(--ink)}
.nav__mobile{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:var(--light-card);z-index:300;padding:2rem;flex-direction:column}
.nav__mobile.active{display:flex}
.nav__mobile-close{position:absolute;top:1.5rem;right:1.5rem;font-size:1.5rem;cursor:pointer;color:var(--text);background:none;border:none}
.nav__mobile a{font-size:1.1rem;padding:.8rem 0;color:var(--ink);text-decoration:none;border-bottom:1px solid var(--light-border)}

/* Pages with dark nav (hero sections) */
.nav[data-theme="dark"]{color:var(--dark-text)}
.nav[data-theme="dark"] .nav__links li > a{color:rgba(255,255,255,.7)}
.nav[data-theme="dark"] .nav__links li > a:hover{color:#fff}
.nav[data-theme="dark"] .nav__burger span{background:#fff}

/* BUTTONS */
.btn{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--font-body);font-size:.78rem;font-weight:500;letter-spacing:.06em;text-transform:uppercase;padding:.95rem 1.9rem;border-radius:4px;cursor:pointer;border:none;text-decoration:none;transition:all .4s var(--ease-out)}
.btn--primary{background:var(--emerald);color:#fff;position:relative;overflow:hidden}
.btn--primary:hover{background:var(--emerald-dark);transform:translateY(-2px);box-shadow:0 8px 30px rgba(45,130,100,.25)}
.btn--primary::after{content:'';position:absolute;top:50%;left:50%;width:0;height:0;border-radius:50%;background:rgba(255,255,255,.1);transform:translate(-50%,-50%);transition:width .5s,height .5s}
.btn--primary:hover::after{width:300px;height:300px}
.btn--dark{border:1px solid var(--dark-border);color:var(--emerald-light);background:transparent}
.btn--dark:hover{background:var(--emerald);color:#fff;border-color:var(--emerald)}
.btn--dark-ghost{background:transparent;color:var(--dark-text);border:1px solid var(--dark-border)}
.btn--dark-ghost:hover{border-color:rgba(255,255,255,.2);color:#fff}
.btn--outline{background:transparent;color:var(--ink);border:1px solid var(--light-border-strong);border-radius:2px}
.btn--outline:hover{border-color:var(--emerald);color:var(--emerald)}
.btn--ghost{background:transparent;color:var(--text);padding:.85rem 0}
.btn--ghost:hover{color:var(--ink)}
.btn--ghost .arrow{transition:transform .3s var(--ease-out)}
.btn--ghost:hover .arrow{transform:translateX(4px)}

/* PAGE HERO (dark) */
.page-hero{background:var(--dark);padding:8rem 0 3rem;position:relative;overflow:hidden}
.page-hero::before{content:'';position:absolute;top:-30%;right:-10%;width:600px;height:600px;border-radius:50%;background:radial-gradient(circle,rgba(45,130,100,.08) 0%,transparent 60%);pointer-events:none}
.page-hero .container{position:relative;z-index:1}
.page-hero .label{color:var(--emerald-light);display:flex;align-items:center;gap:.6rem}
.page-hero .label::before{content:'';width:20px;height:1px;background:var(--emerald-light)}
.page-hero h1{color:#F0EDE8;margin-bottom:1rem}
.page-hero p{color:var(--dark-muted);max-width:600px;font-size:1.05rem;line-height:1.6}
.breadcrumb{font-family:var(--font-mono);font-size:.6rem;letter-spacing:.08em;margin-bottom:1.5rem;display:flex;flex-wrap:wrap;gap:.3rem;align-items:center}
.breadcrumb a{color:var(--dark-muted);text-decoration:none;transition:color .3s ease}
.breadcrumb a:hover{color:#F0EDE8}
.breadcrumb span{color:rgba(255,255,255,.2)}

/* LIGHT SECTIONS */
.section--warm{background:var(--light-warm)}
.section--light{background:var(--light)}

/* PILLAR / COMPETENCY GRID (light backgrounds) */
.pillars-overview{background:var(--light-warm)}
.comp-grid{background:var(--light);border-top:1px solid var(--light-border);border-bottom:1px solid var(--light-border)}
.section-detail{background:var(--light-warm)}

/* CTA SECTION (dark) */
.page-cta{background:var(--dark);text-align:center;padding:6rem 0;position:relative;overflow:hidden}
.page-cta::before{content:'';position:absolute;top:50%;left:50%;width:500px;height:500px;transform:translate(-50%,-50%);border-radius:50%;background:radial-gradient(circle,var(--emerald-glow) 0%,transparent 70%)}
.page-cta .container{position:relative;z-index:1}
.page-cta h2{color:#F0EDE8;margin-bottom:1rem;font-weight:400}
.page-cta p{color:var(--dark-muted);max-width:500px;margin:0 auto 2rem}

/* CALLOUTS */
.callout{background:var(--emerald-faint);border-left:3px solid var(--emerald);padding:1.5rem;border-radius:0 6px 6px 0;margin:2rem 0;display:flex;gap:1rem;align-items:flex-start}
.callout__icon{font-size:1.1rem;flex-shrink:0;line-height:1.4}
.callout p{margin:0;font-size:.9rem}
.callout--amber{background:rgba(212,148,10,.06);border-color:var(--amber)}
.callout strong{color:var(--emerald-dark)}

/* FOOTER (dark) */
.footer{background:var(--dark);padding:3rem 0 2rem;border-top:1px solid var(--dark-border)}
.footer__inner{max-width:1200px;margin:0 auto;padding:0 2rem}
.footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:2rem;padding-bottom:2rem;border-bottom:1px solid var(--dark-border);margin-bottom:1.5rem}
.footer__logo{font-family:var(--font-display);font-size:1.2rem;font-weight:600;color:#F0EDE8;margin-bottom:.5rem}
.footer__desc{font-size:.8rem;color:var(--dark-muted);line-height:1.5}
.footer__col-title{font-family:var(--font-mono);font-size:.55rem;letter-spacing:.15em;text-transform:uppercase;color:var(--emerald-light);margin-bottom:.7rem}
.footer__col a{display:block;font-size:.78rem;color:var(--dark-text);padding:.2rem 0;transition:color .3s ease;text-decoration:none;position:relative}
.footer__col a::after{content:'';position:absolute;bottom:0;left:0;width:0;height:1px;background:var(--emerald);transition:width .3s var(--ease-out)}
.footer__col a:hover{color:#F0EDE8}
.footer__col a:hover::after{width:100%}
.footer__bottom{display:flex;justify-content:space-between;align-items:center;font-size:.7rem;color:var(--dark-muted)}
.footer__bottom a{color:var(--dark-muted);text-decoration:none}
.footer__bottom a:hover{color:var(--emerald-light)}

/* ANIMATIONS */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s var(--ease-out),transform .7s var(--ease-out)}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal-delay-1{transition-delay:.1s}.reveal-delay-2{transition-delay:.2s}.reveal-delay-3{transition-delay:.3s}
.reveal-left{opacity:0;transform:translateX(-24px);transition:opacity .7s var(--ease-out),transform .7s var(--ease-out)}
.reveal-left.visible{opacity:1;transform:translateX(0)}
.reveal-right{opacity:0;transform:translateX(24px);transition:opacity .7s var(--ease-out),transform .7s var(--ease-out)}
.reveal-right.visible{opacity:1;transform:translateX(0)}

/* FOCUS & ACCESSIBILITY */
:focus-visible{outline:2px solid var(--emerald);outline-offset:2px;border-radius:2px}
a:focus-visible{outline:2px solid var(--emerald);outline-offset:2px}
button:focus-visible,.btn:focus-visible{outline:2px solid var(--emerald);outline-offset:2px}

/* VIEW TRANSITIONS */
@view-transition{navigation:auto}
::view-transition-old(root){animation:vt-fadeOut .2s ease-out}
::view-transition-new(root){animation:vt-fadeIn .3s ease-in}
@keyframes vt-fadeOut{to{opacity:0;transform:translateY(-8px)}}
@keyframes vt-fadeIn{from{opacity:0;transform:translateY(8px)}}

/* DARK MODE */
@media(prefers-color-scheme:dark){
  :root{--light:#1A1A1A;--light-warm:#1E1E1E;--light-card:#222;--light-border:rgba(255,255,255,.06);--light-border-strong:rgba(255,255,255,.1);--ink:#E8E8E8;--text:#C0C0C0;--text-muted:#888}
  body{background:var(--light);color:var(--text)}
  .nav.scrolled{background:rgba(26,26,26,.95)}
  .nav.scrolled .nav__logo-text{color:var(--ink)}
  .nav.scrolled .nav__links li > a{color:var(--text)}
  .nav.scrolled .nav__links li > a:hover{color:var(--emerald-light)}
  .nav.scrolled .nav__burger span{background:var(--ink)}
  .nav__dropdown{background:var(--light-card);border-color:rgba(255,255,255,.06)}
  .nav__mobile{background:var(--light-card)}
  .callout{background:rgba(45,130,100,.08);border-color:rgba(45,130,100,.15)}
}

/* RESPONSIVE */
@media(max-width:900px){.footer__grid{grid-template-columns:1fr 1fr;gap:1.5rem}}
@media(max-width:768px){.nav__burger{display:flex}.nav__links{display:none}a,button,.btn{min-height:44px}}
@media(max-width:600px){section{padding:4rem 0}.container{padding:0 1.2rem}h1{font-size:clamp(1.6rem,5vw,2.4rem)}h2{font-size:clamp(1.3rem,4vw,1.8rem)}.page-hero{padding:6rem 0 2.5rem}.page-hero h1{font-size:clamp(1.4rem,5vw,2rem)}.breadcrumb{font-size:.55rem}.callout{padding:1.2rem;flex-direction:column;gap:.5rem}.footer__grid{grid-template-columns:1fr}}
@media(max-width:400px){.container{padding:0 1rem}}