/* =========================================================
   benjaminroos.de — Design System v3 (LIGHT)
   Crisp editorial · Space Grotesk + Inter + JetBrains Mono
   White canvas · sharp corners · grid detailing
   Lime signal accent · dark "island" sections for rhythm
   ========================================================= */

:root{
  --bg:#ffffff;          /* white canvas */
  --bg-2:#f2f3f1;        /* light neutral section (not cream) */
  --surface:#ffffff;     /* cards */
  --surface-2:#f7f8f6;
  --line:#e5e7e2;        /* hairline */
  --line-2:#d3d6cf;      /* stronger */

  --fg:#14161a;          /* near-black text */
  --fg-soft:#41464e;     /* secondary */
  --fg-mute:#767c86;     /* muted */

  --accent:#c6f24e;      /* signal lime — fills/graphics */
  --accent-2:#b6e63b;
  --accent-ink:#0b0c0f;  /* text on lime */
  --accent-text:#4f7a12; /* readable green — labels/links/emphasis on white */

  /* dark island palette (for .bg-ink sections) */
  --d-bg:#0d0f13; --d-surface:#14161d; --d-line:#23262e; --d-line2:#333846;
  --d-fg:#f4f4f2; --d-soft:#b7bbc4; --d-mute:#868b95;

  /* legacy aliases */
  --ink:var(--fg); --ink-soft:var(--fg-soft); --ink-mute:var(--fg-mute);
  --paper:var(--bg); --paper-2:var(--bg-2); --card:var(--surface); --green:var(--accent-text);

  --radius:4px; --radius-card:10px;
  --maxw:1180px;
  --ff-display:"Space Grotesk",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --ff-sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --ff-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--ff-sans);color:var(--fg);background:var(--bg);
  line-height:1.65;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
::selection{background:var(--accent);color:var(--accent-ink)}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}

/* ---------- Typography ---------- */
h1,h2,h3,h4{font-family:var(--ff-display);font-weight:500;line-height:1.02;letter-spacing:-.02em;color:var(--fg)}
h1{font-size:clamp(2.9rem,7vw,5.6rem);font-weight:600;letter-spacing:-.035em}
h2{font-size:clamp(2rem,4.4vw,3.4rem);font-weight:600;letter-spacing:-.03em}
h3{font-size:clamp(1.15rem,2vw,1.45rem);font-weight:500}
h1 em{font-style:normal;color:var(--fg)}
h2 em{font-style:normal;color:var(--accent-text)}
p{color:var(--fg-soft)}
.lead{font-size:clamp(1.08rem,1.6vw,1.32rem);color:var(--fg-soft);max-width:44ch;line-height:1.6}
.eyebrow{
  font-family:var(--ff-mono);font-size:.74rem;font-weight:500;letter-spacing:.22em;
  text-transform:uppercase;color:var(--accent-text);display:inline-flex;align-items:center;gap:10px;margin-bottom:22px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--accent);display:inline-block}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.55em;background:transparent;color:var(--fg);
  padding:.9em 1.5em;border-radius:var(--radius);font-weight:600;font-size:.92rem;font-family:var(--ff-sans);
  border:1px solid var(--line-2);transition:border-color .18s ease,color .18s ease,background .18s ease,transform .18s ease;cursor:pointer;
}
.btn:hover{border-color:var(--fg);background:var(--fg);color:#fff;transform:translateY(-2px)}
.btn.accent{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.btn.accent:hover{background:var(--accent-2);border-color:var(--accent-2);color:var(--accent-ink)}
.btn.ghost{background:transparent}
.cta-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:36px}
.arrow{transition:transform .18s ease}
.btn:hover .arrow{transform:translateX(4px)}

/* ---------- Header ---------- */
header.site{
  position:sticky;top:0;z-index:50;background:rgba(255,255,255,.82);
  backdrop-filter:saturate(140%) blur(14px);border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:74px}
.logo{font-family:var(--ff-display);font-size:1.3rem;font-weight:600;letter-spacing:-.03em}
.logo span{color:var(--accent-text)}
.nav nav ul{display:flex;gap:30px;list-style:none;align-items:center}
.nav nav a{font-size:.9rem;font-weight:500;color:var(--fg-soft);transition:color .15s}
.nav nav a:hover{color:var(--fg)}
.nav-right{display:flex;align-items:center;gap:20px}
.lang{font-family:var(--ff-mono);font-size:.78rem;font-weight:500;letter-spacing:.05em;color:var(--fg-mute)}
.lang a.active{color:var(--accent-text)}
.menu-toggle{display:none;background:none;border:0;font-size:1.6rem;cursor:pointer;color:var(--fg)}

/* ---------- Hero ---------- */
.hero{
  padding:clamp(56px,9vw,120px) 0 clamp(48px,6vw,80px);position:relative;overflow:hidden;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:100% 100%,72px 100%;background-position:0 0;
}
.hero::before{content:"";position:absolute;inset:0;background:
  linear-gradient(90deg,var(--bg) 0%,transparent 12%,transparent 88%,var(--bg) 100%),
  linear-gradient(var(--bg) 0%,transparent 30%);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1.18fr .82fr;gap:60px;align-items:center;position:relative;z-index:2}
.hero h1{margin:16px 0 26px}
.hero h1 em{position:relative;white-space:nowrap}
.hero h1 em::after{content:"";position:absolute;left:0;right:0;bottom:.04em;height:.32em;background:var(--accent);opacity:.5;z-index:-1}
.hero .lead{max-width:47ch}
.hero .eyebrow{position:relative;z-index:2}
.portrait-frame{position:relative}
.hero-portrait{
  border-radius:var(--radius-card);aspect-ratio:4/5;object-fit:cover;
  border:1px solid var(--line-2);background:var(--bg-2);
}
.portrait-frame .tag{
  position:absolute;left:-16px;bottom:24px;background:var(--surface);border:1px solid var(--line-2);
  border-radius:var(--radius);padding:11px 15px;font-size:.8rem;font-weight:500;font-family:var(--ff-mono);
  letter-spacing:.02em;box-shadow:0 6px 20px rgba(20,22,26,.08);color:var(--fg-soft);
}
.portrait-frame .tag b{color:var(--accent-text);font-weight:600}
.growthline{position:absolute;inset:0;pointer-events:none;z-index:1;opacity:1}

/* ---------- Proof strip ---------- */
.proof{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-2)}
.proof .wrap{display:flex;align-items:center;gap:36px;flex-wrap:wrap;padding-top:26px;padding-bottom:26px}
.proof .label{font-family:var(--ff-mono);font-size:.72rem;font-weight:500;letter-spacing:.16em;text-transform:uppercase;color:var(--fg-mute)}
.proof .brands{display:flex;gap:30px;flex-wrap:wrap;align-items:center}
.proof .brands span{font-family:var(--ff-display);font-size:1.05rem;color:var(--fg);font-weight:500}

/* ---------- Sections ---------- */
section{padding:clamp(64px,9vw,116px) 0;position:relative}
.section-head{max-width:62ch;margin-bottom:56px}
.section-head p{margin-top:16px;font-size:1.1rem}
.bg-alt{background:var(--bg-2)}

/* dark "island" sections */
.bg-ink{background:var(--d-bg);color:var(--d-fg);border-top:1px solid var(--d-bg);border-bottom:1px solid var(--d-bg)}
.bg-ink h2,.bg-ink h3{color:var(--d-fg)}
.bg-ink h2 em{color:var(--accent)}
.bg-ink p,.bg-ink .section-head p,.bg-ink .lead{color:var(--d-soft)}
.bg-ink .eyebrow{color:var(--accent)}
.bg-ink .eyebrow::before{background:var(--accent)}

/* ---------- Services grid ---------- */
.services{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden}
.service{background:var(--surface);padding:38px 34px;transition:background .2s ease;position:relative;display:flex;flex-direction:column;gap:14px}
.service:hover{background:var(--surface-2)}
.service .num{font-family:var(--ff-mono);font-size:.82rem;color:var(--accent-text);font-weight:600;letter-spacing:.1em}
.service h3{font-size:1.5rem}
.service p{font-size:1rem}
.service .more{margin-top:auto;font-weight:600;font-size:.9rem;color:var(--accent-text);display:inline-flex;gap:.4em;align-items:center;padding-top:6px}
.service .kw{font-family:var(--ff-mono);font-size:.74rem;color:var(--fg-mute);letter-spacing:.02em;line-height:1.7}
a.service:hover .more{gap:.7em}

/* ---------- Metrics (always dark stat panel) ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--d-line);border:1px solid var(--d-line);border-radius:var(--radius-card);overflow:hidden;margin-top:8px}
.metric{background:var(--d-bg);padding:34px 28px}
.metric .n{font-family:var(--ff-display);font-size:clamp(2.4rem,4.2vw,3.4rem);font-weight:600;line-height:1;color:var(--d-fg);letter-spacing:-.03em}
.metric .n em{color:var(--accent);font-style:normal}
.metric .l{margin-top:12px;font-size:.92rem;color:var(--d-soft)}

/* ---------- Timeline ---------- */
.timeline{display:grid;gap:0;margin-top:12px;border-top:1px solid var(--line)}
.tl-item{display:grid;grid-template-columns:170px 1fr;gap:32px;padding:30px 0;border-bottom:1px solid var(--line);transition:padding-left .2s ease}
.tl-item:hover{padding-left:10px}
.tl-date{font-family:var(--ff-mono);font-weight:500;color:var(--accent-text);font-size:.9rem;letter-spacing:.04em;padding-top:5px}
.tl-body h3{font-size:1.3rem;margin-bottom:6px}
.tl-body .role{font-weight:600;color:var(--fg);font-size:.95rem;margin-bottom:8px}
.tl-body p{font-size:.98rem}
.bg-ink .timeline{border-color:var(--d-line)}
.bg-ink .tl-item{border-color:var(--d-line)}
.bg-ink .tl-date{color:var(--accent)}
.bg-ink .tl-body h3,.bg-ink .tl-body .role{color:var(--d-fg)}
.bg-ink .tl-body p{color:var(--d-soft)}

/* ---------- Companies / references ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:30px;display:flex;flex-direction:column;gap:12px;transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease}
.card:hover{border-color:var(--line-2);transform:translateY(-3px);box-shadow:0 10px 30px rgba(20,22,26,.06)}
.card .pos{font-family:var(--ff-mono);font-size:.74rem;font-weight:500;color:var(--accent-text);letter-spacing:.06em;text-transform:uppercase}
.card h3{font-size:1.3rem}
.card p{font-size:.95rem}
.card a.mehr{margin-top:auto;font-weight:600;font-size:.9rem;color:var(--fg);border-bottom:2px solid var(--accent);align-self:flex-start;padding-bottom:2px;transition:color .15s}
.card a.mehr:hover{color:var(--accent-text)}

/* ---------- Audience ---------- */
.audience{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.aud{display:flex;gap:16px;padding:22px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card)}
.aud .dot{width:8px;height:8px;background:var(--accent-text);margin-top:9px;flex:none;transform:rotate(45deg)}
.aud b{display:block;margin-bottom:4px;color:var(--fg);font-family:var(--ff-display);font-weight:500;font-size:1.05rem}
.aud p{font-size:.93rem}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line)}
.faq summary{
  cursor:pointer;list-style:none;padding:24px 0;font-family:var(--ff-display);font-size:1.2rem;font-weight:500;
  display:flex;justify-content:space-between;align-items:center;gap:16px;color:var(--fg);transition:color .15s;
}
.faq summary:hover{color:var(--accent-text)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--accent-text);font-size:1.5rem;font-family:var(--ff-sans);font-weight:400}
.faq[open] summary::after{content:"–"}
.faq p{padding:0 0 24px;font-size:1rem;max-width:72ch}
.faq:last-of-type{border-bottom:1px solid var(--line)}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:52px;align-items:start}
.contact-methods{display:flex;flex-direction:column;gap:2px;margin-top:30px;border-top:1px solid var(--line)}
.contact-methods a{display:flex;gap:14px;align-items:center;font-weight:600;color:var(--fg);padding:16px 0;border-bottom:1px solid var(--line);transition:color .15s}
.contact-methods a:hover{color:var(--accent-text)}
.contact-methods a span{font-family:var(--ff-mono);color:var(--fg-mute);font-weight:500;width:84px;font-size:.76rem;letter-spacing:.08em;text-transform:uppercase}
form.anfrage{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:30px;box-shadow:0 10px 30px rgba(20,22,26,.05)}
form.anfrage label{display:block;font-family:var(--ff-mono);font-size:.74rem;letter-spacing:.08em;text-transform:uppercase;font-weight:500;color:var(--fg-mute);margin:16px 0 7px}
form.anfrage input,form.anfrage textarea,form.anfrage select{
  width:100%;padding:13px 15px;border:1px solid var(--line-2);border-radius:var(--radius);
  font-family:inherit;font-size:.95rem;background:var(--bg);color:var(--fg);transition:border-color .15s;
}
form.anfrage input:focus,form.anfrage textarea:focus,form.anfrage select:focus{outline:none;border-color:var(--accent-text)}
form.anfrage textarea{min-height:120px;resize:vertical}
form.anfrage .btn{width:100%;justify-content:center;margin-top:22px}

/* contact section sits in a dark island (.bg-ink) -> keep form readable */
.bg-ink .contact-methods{border-color:var(--d-line)}
.bg-ink .contact-methods a{color:var(--d-fg);border-color:var(--d-line)}
.bg-ink .contact-methods a:hover{color:var(--accent)}
.bg-ink .contact-methods a span{color:var(--d-mute)}
.bg-ink form.anfrage{background:var(--d-surface);border-color:var(--d-line);box-shadow:none}
.bg-ink form.anfrage label{color:var(--d-mute)}
.bg-ink form.anfrage input,.bg-ink form.anfrage textarea,.bg-ink form.anfrage select{background:var(--d-bg);border-color:var(--d-line2);color:var(--d-fg)}
.bg-ink form.anfrage input:focus,.bg-ink form.anfrage textarea:focus,.bg-ink form.anfrage select:focus{border-color:var(--accent)}
.bg-ink .btn.ghost{color:var(--d-fg);border-color:var(--d-line2)}
.bg-ink .btn.ghost:hover{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}

/* ---------- Footer ---------- */
footer.site{background:var(--bg-2);color:var(--fg-soft);padding:64px 0 34px;border-top:1px solid var(--line)}
footer.site .cols{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:36px;margin-bottom:40px}
footer.site h4{color:var(--fg);font-family:var(--ff-mono);font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;margin-bottom:16px;font-weight:500}
footer.site a{color:var(--fg-soft);font-size:.92rem;display:block;padding:5px 0;transition:color .15s}
footer.site a:hover{color:var(--accent-text)}
footer.site .brand{font-family:var(--ff-display);font-size:1.5rem;color:var(--fg);margin-bottom:12px;font-weight:600;letter-spacing:-.03em}
footer.site .legal{border-top:1px solid var(--line);padding-top:24px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-family:var(--ff-mono);font-size:.78rem;letter-spacing:.03em}
footer.site .legal a{display:inline;padding:0}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.reveal.show{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .portrait-frame{max-width:380px}
  .services,.audience,.contact-grid{grid-template-columns:1fr}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .cards{grid-template-columns:1fr}
  footer.site .cols{grid-template-columns:1fr 1fr}
  .nav nav{display:none}
  .nav nav.open{display:block;position:absolute;top:74px;left:0;right:0;background:var(--bg);border-bottom:1px solid var(--line);padding:18px 28px}
  .nav nav.open ul{flex-direction:column;gap:8px;align-items:flex-start}
  .menu-toggle{display:block}
  .tl-item{grid-template-columns:1fr;gap:8px}
  .tl-item:hover{padding-left:0}
}
@media(max-width:520px){
  .metrics{grid-template-columns:1fr 1fr}
  footer.site .cols{grid-template-columns:1fr}
  .hero{background-size:100% 100%,48px 100%}
}