/* ============================================================
   SK Management Consulting — Design System
   style.css · Extracted from demo-homepage-light.html
   Extended with sub-page styles
   ============================================================ */


/* ── RESET & ROOT ── */

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  /* Backgrounds */
  --bg:#ffffff;
  --bg-warm:#f8f9fc;
  --bg-section:#f1f4f9;
  --bg-card:#ffffff;
  --bg-dark:#0c1a2e;
  --bg-dark-mid:#132040;

  /* Borders */
  --border:#e2e6ef;
  --border-light:#edf0f5;
  --border-accent:rgba(0,136,253,.2);

  /* Brand */
  --blue:#0074e0;
  --blue-light:#0ea5e9;
  --blue-dark:#005bb5;
  --blue-bg:rgba(0,116,224,.04);
  --blue-bg-strong:rgba(0,116,224,.08);
  --navy:#0c1a2e;

  /* Text */
  --t1:#0f1729;
  --t2:#374151;
  --t3:#6b7280;
  --t4:#9ca3af;

  /* Type */
  --serif:'Merriweather',Georgia,'Times New Roman',serif;
  --sans:'DM Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --mono:'JetBrains Mono','SF Mono','Consolas',monospace;

  --section-gap:clamp(60px,8vw,100px);
  --max:1200px;
  --pad:clamp(20px,4vw,48px);
}
html{scroll-behavior:smooth}
body{font-family:var(--sans);background:var(--bg);color:var(--t2);line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
.container{max-width:var(--max);margin:0 auto;padding:0 var(--pad)}


/* ── GLOBAL UTILITIES ── */

.label{
  font-family:var(--mono);font-size:11px;font-weight:500;
  letter-spacing:3px;text-transform:uppercase;color:var(--blue);
}
.section-heading{
  font-family:var(--serif);font-size:clamp(28px,4vw,42px);
  font-weight:700;color:var(--t1);line-height:1.2;margin-bottom:.5em;
}
.section-sub{font-size:16px;color:var(--t2);max-width:600px;line-height:1.7}
/* Reveal-Animation: nur aktiv wenn JS geladen hat (js-ready auf html) */
.js-ready .reveal{opacity:0;transform:translateY(20px);transition:opacity .6s cubic-bezier(.22,1,.36,1),transform .6s cubic-bezier(.22,1,.36,1)}
.js-ready .reveal.visible{opacity:1;transform:translateY(0)}


/* ── HEADER ── */

.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(255,255,255,.85);backdrop-filter:blur(20px) saturate(1.4);
  border-bottom:1px solid transparent;transition:border-color .3s;
}
.site-header.scrolled{border-bottom-color:var(--border)}
.header-inner{
  max-width:var(--max);margin:0 auto;padding:0 var(--pad);
  display:flex;align-items:center;justify-content:space-between;height:72px;
}
.logo{
  font-family:var(--sans);font-size:20px;font-weight:700;
  color:var(--t1);text-decoration:none;letter-spacing:.5px;
}
.logo .sep{color:var(--blue);margin:0 4px;font-weight:300}
.nav-links{display:flex;align-items:center;gap:32px;list-style:none}
.nav-links a{
  font-size:14px;font-weight:500;color:var(--t2);text-decoration:none;
  transition:color .25s;position:relative;
}
.nav-links a:hover{color:var(--t1)}
.nav-links a::after{
  content:'';position:absolute;bottom:-4px;left:0;width:0;height:1.5px;
  background:var(--blue);transition:width .3s;
}
.nav-links a:hover::after{width:100%}
.nav-cta{
  font-size:13px!important;font-weight:600!important;color:#fff!important;
  background:linear-gradient(135deg,var(--blue),var(--blue-dark));
  padding:9px 22px;border-radius:6px;transition:transform .2s,box-shadow .2s;
}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 6px 20px rgba(0,116,224,.2)}
.nav-cta::after{display:none!important}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--t1);margin:5px 0;transition:.3s}


/* ── HERO ── */

.hero{
  min-height:min(100vh,800px);display:flex;align-items:center;
  background:var(--bg);
  position:relative;overflow:hidden;padding:120px 0 80px;
}
.hero::before{
  content:'';position:absolute;width:900px;height:900px;top:-300px;right:-200px;
  background:radial-gradient(circle,rgba(0,116,224,.05) 0%,transparent 60%);pointer-events:none;
}
.hero-grid{
  position:absolute;inset:0;
  background-image:
    linear-gradient(var(--border-light) 1px,transparent 1px),
    linear-gradient(90deg,var(--border-light) 1px,transparent 1px);
  background-size:80px 80px;
  mask-image:radial-gradient(ellipse 60% 50% at 50% 50%,black,transparent);
  pointer-events:none;
}
.hero-content{position:relative;z-index:2;max-width:720px}
.hero-label{
  font-family:var(--mono);font-size:11px;letter-spacing:4px;text-transform:uppercase;
  color:var(--blue);margin-bottom:24px;
}
.hero-title{
  font-family:var(--serif);font-size:clamp(36px,5.5vw,64px);
  font-weight:400;font-style:italic;line-height:1.15;
  color:var(--t1);margin-bottom:8px;
}
.hero-title strong{
  font-weight:700;font-style:normal;
  background:linear-gradient(135deg,var(--blue),var(--blue-light));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.hero-subtitle{
  font-size:clamp(16px,2vw,19px);color:var(--t2);
  max-width:540px;line-height:1.7;margin:24px 0 36px;
}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.btn-primary{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--sans);font-size:15px;font-weight:600;color:#fff;
  background:linear-gradient(135deg,var(--blue),var(--blue-dark));
  padding:14px 32px;border-radius:8px;text-decoration:none;border:none;cursor:pointer;
  transition:transform .2s,box-shadow .3s;
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 32px rgba(0,116,224,.2)}
.btn-secondary{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--sans);font-size:15px;font-weight:500;
  color:var(--t2);background:transparent;
  border:1px solid var(--border);
  padding:14px 32px;border-radius:8px;text-decoration:none;cursor:pointer;
  transition:border-color .3s,color .3s;
}
.btn-secondary:hover{border-color:var(--blue);color:var(--t1)}

.hero-stats{
  display:flex;gap:40px;margin-top:48px;padding-top:24px;
  border-top:1px solid var(--border);
}
.hero-stat .stat-value{font-family:var(--mono);font-size:28px;font-weight:600;color:var(--t1);line-height:1}
.hero-stat .stat-label{font-size:12px;color:var(--t3);margin-top:6px}
@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}


/* ── PROBLEM ── */

.problem{padding:var(--section-gap) 0;background:var(--bg)}
.problem-inner{max-width:800px;margin:0 auto;text-align:center}
.problem-text{
  font-family:var(--serif);font-size:clamp(20px,3vw,28px);
  font-weight:400;font-style:italic;color:var(--t1);line-height:1.5;margin-bottom:20px;
}
.problem-sub{font-size:15px;color:var(--t2);line-height:1.8;max-width:620px;margin:0 auto}


/* ── EXPERTISEN ── */

.expertisen{padding:var(--section-gap) 0;background:var(--bg-warm)}
.expertisen-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:36px}
.expertise-card{
  background:var(--bg-card);border:1px solid var(--border-light);border-radius:14px;
  padding:32px 28px;transition:border-color .4s,box-shadow .4s,transform .3s;
  position:relative;overflow:hidden;
}
.expertise-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--blue),var(--blue-light));
  opacity:0;transition:opacity .4s;
}
.expertise-card:hover{
  border-color:var(--border);
  box-shadow:0 12px 40px rgba(0,0,0,.06);
  transform:translateY(-4px);
}
.expertise-card:hover::before{opacity:1}
.expertise-icon{
  width:52px;height:52px;border-radius:12px;
  background:var(--blue-bg);
  display:flex;align-items:center;justify-content:center;margin-bottom:24px;
}
.expertise-icon svg{width:24px;height:24px;stroke:var(--blue);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.expertise-card h3{font-family:var(--serif);font-size:20px;font-weight:700;color:var(--t1);margin-bottom:12px}
.expertise-card p{font-size:14px;color:var(--t2);line-height:1.7;margin-bottom:20px}
.expertise-ref{
  font-family:var(--mono);font-size:11px;color:var(--t3);
  padding-top:16px;border-top:1px solid var(--border-light);line-height:1.6;
}
.card-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;color:var(--blue);
  text-decoration:none;margin-top:16px;transition:gap .3s;
}
.card-link:hover{gap:10px}


/* ── BERATUNGSANSATZ ── */

.approach{padding:var(--section-gap) 0;background:var(--bg)}
.phases{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:48px;position:relative}
.phases::before{
  content:'';position:absolute;top:44px;left:15%;right:15%;height:1px;
  background:linear-gradient(90deg,transparent,var(--border-accent),var(--border-accent),transparent);
}
.phase{text-align:center;padding:0 24px;position:relative}
.phase-number{
  font-family:var(--mono);font-size:13px;font-weight:600;color:var(--blue);
  width:44px;height:44px;border:2px solid var(--blue);border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  margin-bottom:24px;background:var(--bg);position:relative;z-index:2;
}
.phase h3{font-family:var(--serif);font-size:18px;font-weight:700;color:var(--t1);margin-bottom:6px}
.phase .phase-claim{font-family:var(--serif);font-size:13px;font-style:italic;color:var(--t3);margin-bottom:16px}
.phase ul{list-style:none;text-align:left}
.phase li{font-size:13px;color:var(--t2);padding:6px 0 6px 16px;position:relative;line-height:1.5}
.phase li::before{content:'';position:absolute;left:0;top:13px;width:5px;height:5px;border-radius:50%;background:var(--blue);opacity:.35}
.phase-result{font-size:12px;color:var(--t3);margin-top:16px;padding-top:12px;border-top:1px solid var(--border-light);font-style:italic}


/* ── REFERENZEN ── */

.referenzen{padding:var(--section-gap) 0;background:var(--bg-warm)}
.timeline{margin-top:48px;position:relative;padding-left:32px}
.timeline::before{
  content:'';position:absolute;left:7px;top:8px;bottom:8px;width:1px;
  background:linear-gradient(180deg,var(--blue),var(--border),transparent);
}
.timeline-item{position:relative;padding:0 0 40px 32px}
.timeline-item::before{
  content:'';position:absolute;left:-28px;top:8px;width:11px;height:11px;
  border-radius:50%;background:var(--bg-warm);border:2px solid var(--blue);
}
.timeline-item.active::before{background:var(--blue);box-shadow:0 0 0 4px rgba(0,116,224,.12)}
.timeline-date{font-family:var(--mono);font-size:12px;color:var(--blue);margin-bottom:6px}
.timeline-title{font-size:16px;font-weight:600;color:var(--t1);margin-bottom:4px}
.timeline-desc{font-size:14px;color:var(--t2);line-height:1.6}
.timeline-tag{
  display:inline-block;font-family:var(--mono);font-size:10px;font-weight:500;
  letter-spacing:.5px;color:var(--blue);background:var(--blue-bg);
  padding:3px 10px;border-radius:4px;margin-top:8px;
}


/* ── PROFIL ── */

.profil{padding:var(--section-gap) 0;background:var(--bg)}
.profil-inner{display:grid;grid-template-columns:280px 1fr;gap:60px;align-items:start}
.profil-photo{
  width:280px;height:340px;border-radius:12px;
  background:linear-gradient(135deg,var(--bg-section),var(--border-light));
  border:1px solid var(--border-light);
  display:flex;align-items:center;justify-content:center;
  color:var(--t3);font-size:13px;overflow:hidden;
  margin-right:24px;flex-shrink:0;
}
.profil-photo img{
  width:100%;height:100%;object-fit:cover;object-position:center top;
  border-radius:12px;
}
.profil-content h2{font-family:var(--serif);font-size:32px;font-weight:700;color:var(--t1);margin-bottom:4px}
.profil-content .profil-role{font-size:14px;color:var(--blue);margin-bottom:20px}
.profil-content p{font-size:15px;line-height:1.8;margin-bottom:16px}
.profil-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
.profil-tag{
  font-family:var(--mono);font-size:11px;color:var(--t2);
  background:var(--bg-warm);border:1px solid var(--border);
  padding:6px 14px;border-radius:6px;
}


/* ── CTA-SECTION (dunkler Block) ── */

.cta-section{padding:var(--section-gap) 0;background:var(--bg-warm)}
.cta-inner{
  background:linear-gradient(135deg,var(--bg-dark),var(--bg-dark-mid));
  border-radius:20px;padding:clamp(48px,6vw,80px);
  text-align:center;position:relative;overflow:hidden;
}
.cta-inner::before{
  content:'';position:absolute;width:500px;height:500px;top:-250px;right:-100px;
  background:radial-gradient(circle,rgba(0,116,224,.1),transparent 60%);pointer-events:none;
}
.cta-inner .label{color:var(--blue-light)}
.cta-inner h2{font-family:var(--serif);font-size:clamp(26px,3.5vw,38px);font-weight:700;color:#fff;margin-bottom:12px;position:relative}
.cta-inner p{font-size:16px;color:rgba(255,255,255,.6);max-width:500px;margin:0 auto 32px;line-height:1.7;position:relative}


/* ── FOOTER ── */

.site-footer{border-top:1px solid var(--border);padding:60px 0 40px;background:var(--bg)}
.footer-inner{max-width:var(--max);margin:0 auto;padding:0 var(--pad)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px;margin-bottom:48px}
.footer-logo{font-family:var(--sans);font-size:20px;font-weight:700;color:var(--t1);text-decoration:none;letter-spacing:.5px;display:inline-block;margin-bottom:16px}
.footer-logo .sep{color:var(--blue);margin:0 4px;font-weight:300}
.footer-desc{font-size:13px;color:var(--t3);line-height:1.7;max-width:280px}
.footer-location{font-size:12px;color:var(--t4);margin-top:8px}
.footer-heading{font-family:var(--sans);font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:1.5px;color:var(--t3);margin-bottom:20px}
.footer-links,.footer-col ul,.footer-legal{list-style:none;margin:0;padding:0}
.footer-links li,.footer-col li{margin-bottom:10px;font-size:14px;color:var(--t2)}
.footer-links a{font-size:14px;color:var(--t2);text-decoration:none;transition:color .2s}
.footer-links a:hover{color:var(--t1)}
.footer-col a{font-size:14px;color:var(--t2);text-decoration:none;transition:color .2s}
.footer-col a:hover{color:var(--t1)}
.footer-cta-link{color:var(--blue)!important;font-weight:600}
.footer-bottom{padding-top:32px;border-top:1px solid var(--border);display:flex;justify-content:space-between;align-items:center}
.footer-copy{font-size:12px;color:var(--t4)}
.footer-legal{list-style:none;display:flex;gap:24px;margin:0;padding:0}
.footer-legal a{color:var(--t3);text-decoration:none;font-size:12px;transition:color .2s}
.footer-legal a:hover{color:var(--t2)}


/* ============================================================
   SUB-PAGE STYLES
   ============================================================ */


/* ── SERVICE / EXPERTISE DETAIL PAGES ── */

.page-hero{padding:calc(72px + 60px) 0 60px;background:var(--bg)}
.page-hero .label{margin-bottom:16px}
.page-hero h1{font-family:var(--serif);font-size:clamp(32px,4vw,48px);font-weight:700;color:var(--t1);line-height:1.2;margin-bottom:12px}
.page-hero p{font-size:17px;color:var(--t2);max-width:640px;line-height:1.7}
.content-section{padding:var(--section-gap) 0}
.content-section:nth-child(even){background:var(--bg-warm)}
.content-section h2{font-family:var(--serif);font-size:24px;font-weight:700;color:var(--t1);margin-bottom:16px}
.content-section h3{font-family:var(--sans);font-size:16px;font-weight:600;color:var(--t1);margin-bottom:8px}
.content-section p{font-size:15px;line-height:1.8;margin-bottom:16px;max-width:720px}
.content-section ul{list-style:none;margin-bottom:24px}
.content-section li{font-size:14px;color:var(--t2);padding:8px 0 8px 20px;position:relative;line-height:1.6}
.content-section li::before{content:'';position:absolute;left:0;top:15px;width:6px;height:6px;border-radius:50%;background:var(--blue);opacity:.35}


/* ── BLOG ── */

.blog-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:24px;margin-top:40px}
.blog-card{background:var(--bg-card);border:1px solid var(--border-light);border-radius:12px;overflow:hidden;transition:border-color .3s,box-shadow .3s,transform .3s}
.blog-card:hover{border-color:var(--border);box-shadow:0 8px 30px rgba(0,0,0,.05);transform:translateY(-3px)}
.blog-card-body{padding:24px}
.blog-card-date{font-family:var(--mono);font-size:11px;color:var(--t3);margin-bottom:8px}
.blog-card h3{font-family:var(--serif);font-size:18px;font-weight:700;color:var(--t1);margin-bottom:8px;line-height:1.3}
.blog-card h3 a{color:inherit;text-decoration:none}
.blog-card h3 a:hover{color:var(--blue)}
.blog-card p{font-size:14px;color:var(--t2);line-height:1.6}
.article-header{padding:calc(72px + 60px) 0 40px;background:var(--bg)}
.article-header .label{margin-bottom:12px}
.article-header h1{font-family:var(--serif);font-size:clamp(28px,4vw,40px);font-weight:700;color:var(--t1);line-height:1.25;margin-bottom:12px;max-width:720px}
.article-meta{font-family:var(--mono);font-size:12px;color:var(--t3)}
.article-body{padding:48px 0 var(--section-gap);max-width:720px}
.article-body h2{font-family:var(--serif);font-size:24px;font-weight:700;color:var(--t1);margin:40px 0 16px}
.article-body h3{font-size:18px;font-weight:600;color:var(--t1);margin:32px 0 12px}
.article-body p{font-size:16px;line-height:1.85;margin-bottom:20px}
.article-body ul,.article-body ol{margin:0 0 20px 20px}
.article-body li{font-size:15px;line-height:1.7;margin-bottom:8px}
.article-body blockquote{border-left:3px solid var(--blue);padding:12px 24px;margin:24px 0;background:var(--blue-bg);border-radius:0 8px 8px 0}
.article-body code{font-family:var(--mono);font-size:14px;background:var(--bg-warm);padding:2px 6px;border-radius:4px}


/* ── FAQ ── */

.faq-list{max-width:720px;margin-top:40px}
.faq-item{border-bottom:1px solid var(--border-light);padding:24px 0}
.faq-item h3{font-size:16px;font-weight:600;color:var(--t1);margin-bottom:8px;cursor:pointer;display:flex;justify-content:space-between;align-items:center}
.faq-item p{font-size:14px;color:var(--t2);line-height:1.7}


/* ── KONTAKT ── */

.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;margin-top:48px}
.contact-form label{display:block;font-size:13px;font-weight:500;color:var(--t1);margin-bottom:6px}
.contact-form input,.contact-form textarea{width:100%;padding:12px 16px;font-family:var(--sans);font-size:14px;border:1px solid var(--border);border-radius:8px;background:var(--bg);color:var(--t1);transition:border-color .3s;margin-bottom:20px}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:var(--blue)}
.contact-form textarea{min-height:140px;resize:vertical}
.contact-form .checkbox-row{display:flex;gap:10px;align-items:flex-start;margin-bottom:24px}
.contact-form .checkbox-row input{width:auto;margin:0}
.contact-form .checkbox-row label{font-size:12px;color:var(--t3);line-height:1.5}
.contact-info h3{font-family:var(--serif);font-size:20px;font-weight:700;color:var(--t1);margin-bottom:16px}
.contact-info p{font-size:14px;line-height:1.8;margin-bottom:20px}
.contact-info a{color:var(--blue);text-decoration:none}
.contact-info a:hover{text-decoration:underline}
.contact-form-wrap h2,.contact-info h2{font-family:var(--serif);font-size:24px;font-weight:700;color:var(--t1);margin-bottom:10px}
.contact-form-intro{font-size:14px;color:var(--t2);margin-bottom:24px;line-height:1.6}
.contact-info-block{display:flex;gap:14px;align-items:flex-start;margin-bottom:24px}
.contact-info-icon{flex-shrink:0;width:36px;height:36px;border-radius:8px;background:var(--surface);display:flex;align-items:center;justify-content:center;color:var(--blue)}
.contact-info-label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--t3);margin-bottom:4px}
.contact-info-value{font-size:14px;color:var(--t1);line-height:1.6}
.contact-info-value a{color:var(--blue);text-decoration:none}
.contact-info-value a:hover{text-decoration:underline}
.contact-info-note{margin-top:32px;padding:20px;background:var(--surface);border-radius:12px;font-size:13px;color:var(--t2);line-height:1.7}

/* ── PAGE SECTION ── */
.page-section{padding:64px 0 96px}
.page-hero-title{font-family:var(--serif);font-size:clamp(32px,4vw,48px);font-weight:700;color:var(--t1);line-height:1.2;margin-bottom:12px}
.page-hero-sub{font-size:17px;color:var(--t2);max-width:640px;line-height:1.7}

/* ── LEGAL CONTENT ── */
.legal-content{max-width:760px}
.legal-content h2{font-family:var(--serif);font-size:22px;font-weight:700;color:var(--t1);margin:48px 0 16px;padding-bottom:8px;border-bottom:1px solid var(--border)}
.legal-content h2:first-child{margin-top:0}
.legal-content h3{font-family:var(--serif);font-size:17px;font-weight:700;color:var(--t1);margin:28px 0 10px}
.legal-content p{font-size:15px;color:var(--t2);line-height:1.8;margin-bottom:16px}
.legal-content ul{padding-left:20px;margin-bottom:16px}
.legal-content li{font-size:15px;color:var(--t2);line-height:1.8;margin-bottom:8px}
.legal-content a{color:var(--blue);text-decoration:none;word-break:break-all}
.legal-content a:hover{text-decoration:underline}


/* ── BREADCRUMB ── */

.breadcrumb{padding-top:calc(72px + 20px);padding-bottom:0}
.breadcrumb ol{list-style:none;display:flex;gap:8px;font-size:12px;color:var(--t3)}
.breadcrumb a{color:var(--t3);text-decoration:none}
.breadcrumb a:hover{color:var(--blue)}
.breadcrumb .sep{margin:0 4px}


/* ============================================================
   RESPONSIVE
   ============================================================ */


/* ── 900px Breakpoint ── */

@media(max-width:900px){
  .expertisen-grid{grid-template-columns:1fr}
  .phases{grid-template-columns:1fr;gap:40px}
  .phases::before{display:none}
  .phase{text-align:left;padding:0}
  .profil-inner{grid-template-columns:1fr}
  .profil-photo{width:100%;max-width:280px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hero-stats{flex-wrap:wrap;gap:24px}
  .contact-grid{grid-template-columns:1fr}
  .blog-grid{grid-template-columns:1fr}
}

/* ── 640px Breakpoint ── */

@media(max-width:640px){
  .nav-links{display:none}
  .nav-toggle{display:block}
  .hero-actions{flex-direction:column}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;gap:12px;text-align:center}
}

/* ── Mobile Nav Open State ── */

.nav-links.open{display:flex;flex-direction:column;position:absolute;top:72px;left:0;right:0;background:var(--bg);border-bottom:1px solid var(--border);padding:20px var(--pad);gap:16px}
.nav-toggle.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}