/* ─── FOKUSWERK CASE STUDY STYLESHEET ───────────────────────────────────── */

/* ─── FONT ──────────────────────────────────────────────────────────────── */
@font-face{font-family:'Inter';font-style:normal;font-weight:400 900;font-display:swap;src:url('/fonts/inter-var.woff2') format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;}

/* ─── RESET ─────────────────────────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;scroll-behavior:smooth;}
img,video{display:block;max-width:100%;height:auto;}
a{text-decoration:none;}
button{font:inherit;border:none;background:none;cursor:pointer;}

/* ─── VARIABLES ─────────────────────────────────────────────────────────── */
:root{
  --white:#FFFFFF;
  --bg:#F7F7F5;
  --bg2:#EFEFEA;
  --bg3:#E5E5DF;
  --fg:#0A0A0A;
  --fg2:#525252;
  --fg3:#636363;
  --dark:#353535;
  --dark2:#1A1A1A;
  --border:rgba(10,10,10,.07);
  --border-d:rgba(255,255,255,.08);
  --green:#22C55E;
  --ff:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;
  --pad:clamp(1.25rem,5vw,5rem);
  --r:12px;
  --r-lg:20px;
  --ease:cubic-bezier(.16,1,.3,1);
  --sh-sm:0 1px 3px rgba(0,0,0,.07),0 1px 2px rgba(0,0,0,.05);
  --sh-md:0 4px 16px rgba(0,0,0,.08),0 2px 6px rgba(0,0,0,.04);
  --sh-lg:0 12px 40px rgba(0,0,0,.12),0 4px 12px rgba(0,0,0,.06);
  /* Case accent colors — overridden per page */
  --ca:#22C55E;      /* accent color */
  --ca2:rgba(34,197,94,.15); /* accent tint */
  --ch1:#0D2010;     /* hero bg dark */
  --ch2:#0A0A0A;     /* hero bg end */
  --cg1:rgba(34,197,94,.5);  /* glow 1 */
  --cg2:rgba(34,197,94,.25); /* glow 2 */
}

body{font-family:var(--ff);background:var(--bg);color:var(--fg);overflow-x:hidden;line-height:1.6;}

/* ─── PROGRESS BAR ──────────────────────────────────────────────────────── */
#progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:200;background:var(--dark2);transform:scaleX(0);transform-origin:left;transition:transform .1s linear;}

/* ─── NAV ───────────────────────────────────────────────────────────────── */
#nav{position:fixed;top:0;left:0;right:0;z-index:100;padding:0 var(--pad);transition:background .4s,border-color .4s,backdrop-filter .4s;border-bottom:1px solid transparent;}
#nav.scrolled{background:rgba(247,247,245,.92);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border-bottom-color:var(--border);}
.nav-in{max-width:1280px;margin:0 auto;display:flex;align-items:center;height:72px;gap:1.5rem;}
.nav-brand{display:flex;align-items:center;gap:.75rem;text-decoration:none;flex-shrink:0;}
.nav-brand img{
  height:20px;width:auto;
  filter:brightness(0) invert(1); /* weißes Logo auf dunklem Hero */
  transition:filter .4s;
}
#nav.scrolled .nav-brand img{
  filter:none; /* dunkles Original-Logo auf weißem Nav */
}
.nav-brand-txt{display:none;}
.nav-back{margin-left:auto;display:inline-flex;align-items:center;gap:.5rem;font-size:.875rem;font-weight:500;color:rgba(255,255,255,.55);text-decoration:none;transition:color .2s;}
.nav-back:hover{color:#fff;}
#nav.scrolled .nav-back{color:var(--fg3);}
#nav.scrolled .nav-back:hover{color:var(--fg);}
.nav-back-arr{display:inline-block;transition:transform .3s var(--ease);}
.nav-back:hover .nav-back-arr{transform:translateX(-4px);}

/* ─── WRAP ───────────────────────────────────────────────────────────────── */
.wrap{max-width:1280px;margin:0 auto;padding:0 var(--pad);}
.wrap-sm{max-width:900px;margin:0 auto;padding:0 var(--pad);}

/* ─── EYEBROW ────────────────────────────────────────────────────────────── */
.eyebrow{font-size:.5625rem;font-weight:700;text-transform:uppercase;letter-spacing:.14em;line-height:1;}

/* ─── HERO ───────────────────────────────────────────────────────────────── */
.cs-hero{
  min-height:100svh;
  background:var(--ch1);
  position:relative;
  display:flex;
  flex-direction:column;
  justify-content:flex-end;
  padding:0 var(--pad) clamp(3rem,6vw,5rem);
  overflow:hidden;
}
.cs-hero::before{
  content:'';
  position:absolute;
  width:900px;height:900px;border-radius:50%;
  background:radial-gradient(circle,var(--cg1) 0%,var(--cg2) 38%,transparent 68%);
  top:-200px;right:-100px;pointer-events:none;
}
.cs-hero::after{
  content:'';
  position:absolute;
  width:700px;height:700px;border-radius:50%;
  background:radial-gradient(circle,var(--cg2) 0%,transparent 65%);
  bottom:-250px;left:-100px;pointer-events:none;
}
.cs-hero-grid{
  content:'';
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:80px 80px;
  -webkit-mask-image:radial-gradient(ellipse 90% 85% at 50% 50%,black 30%,transparent 75%);
  mask-image:radial-gradient(ellipse 90% 85% at 50% 50%,black 30%,transparent 75%);
  pointer-events:none;
}
.cs-hero-inner{
  position:relative;z-index:2;
  max-width:1280px;
  width:100%;
  margin:0 auto;
  padding-top:calc(72px + clamp(3rem,6vw,5rem));
  display:flex;
  flex-direction:column;
  gap:2.5rem;
}
.cs-hero-top{display:flex;flex-direction:column;gap:1.25rem;}
.cs-hero-cat{
  display:inline-flex;align-items:center;gap:.75rem;
  font-size:.5625rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:rgba(255,255,255,.45);
}
.cs-hero-cat-dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--ca);
  box-shadow:0 0 8px var(--ca);
  flex-shrink:0;
}
/* Client name — the BIG primary identity */
.cs-hero-client{
  font-size:clamp(2.75rem,6.5vw,5.5rem);
  font-weight:800;
  color:#fff;
  letter-spacing:-.045em;
  line-height:1;
}
/* Accent bar between name and tagline */
.cs-hero-divider{
  width:44px;height:4px;
  background:var(--ca);
  border-radius:3px;
  margin:1.375rem 0 1.25rem;
}
/* Tagline — supporting statement, smaller */
.cs-hero-tagline{
  font-size:clamp(1.125rem,2.25vw,1.875rem);
  font-weight:700;
  color:rgba(255,255,255,.55);
  letter-spacing:-.025em;
  line-height:1.25;
  max-width:720px;
}
.cs-hero-sub{
  font-size:clamp(.9375rem,1.5vw,1.0625rem);
  color:rgba(255,255,255,.48);
  line-height:1.7;
  max-width:540px;
}
/* Stats row */
.cs-stats{
  display:flex;
  align-items:flex-start;
  gap:clamp(2rem,4vw,4rem);
  padding-top:2rem;
  border-top:1px solid var(--border-d);
  flex-wrap:wrap;
}
.cs-stat{}
.cs-stat-n{
  font-size:clamp(2rem,3.5vw,3.25rem);
  font-weight:800;
  color:#fff;
  letter-spacing:-.045em;
  line-height:1;
  margin-bottom:.375rem;
}
.cs-stat-n span{color:inherit;}
.cs-stat-l{
  font-size:.5625rem;font-weight:700;
  text-transform:uppercase;letter-spacing:.12em;
  color:rgba(255,255,255,.35);
}
/* Hero media frame */
.cs-hero-media{
  position:relative;
  border-radius:16px;
  overflow:hidden;
  aspect-ratio:16/7;
  background:linear-gradient(135deg,var(--ch1) 0%,rgba(255,255,255,.04) 50%,var(--ch1) 100%);
  border:1px solid var(--border-d);
  /* Remove when real media added: */
  display:flex;align-items:center;justify-content:center;
}
.cs-hero-media img,
.cs-hero-media video,
.cs-hero-media iframe{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
}
.cs-media-ph-lbl{
  font-size:.5625rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:rgba(255,255,255,.18);
  user-select:none;pointer-events:none;
}

/* ─── SECTION SHARED ─────────────────────────────────────────────────────── */
section{padding:clamp(4rem,8vw,7rem) 0;}
.cs-section-eyebrow{
  font-size:.5rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
  color:var(--ca);margin-bottom:1.125rem;
}
.cs-section-h2{
  font-size:clamp(1.625rem,3vw,2.625rem);font-weight:800;
  color:var(--dark2);letter-spacing:-.04em;line-height:1.1;
  margin-bottom:1.25rem;
}
.cs-section-h2-wh{color:#fff;}
.cs-section-p{
  font-size:.9375rem;color:var(--fg2);line-height:1.78;
  max-width:600px;
}
.cs-section-p-wh{color:rgba(255,255,255,.5);}

/* ─── BRIEF (Challenge + Approach) ──────────────────────────────────────── */
#cs-brief{background:var(--white);}
.cs-brief-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:clamp(2.5rem,6vw,6rem);
  align-items:start;
}
.cs-brief-services{
  display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1.5rem;
}
.cs-service-tag{
  font-size:.5625rem;font-weight:700;letter-spacing:.06em;
  text-transform:uppercase;
  background:var(--bg2);color:var(--dark2);
  padding:.3rem .75rem;border-radius:100px;
}
.cs-service-tag-ac{
  background:var(--ca2);color:var(--dark2);
}
.cs-divider{
  height:1px;background:var(--border);
  margin:clamp(2rem,4vw,3.5rem) 0;
}
/* Approach list */
.cs-approach-list{
  display:flex;flex-direction:column;gap:1.25rem;
  margin-top:1.5rem;
}
.cs-ai{display:flex;align-items:flex-start;gap:.875rem;}
.cs-ai-dot{
  width:22px;height:22px;border-radius:50%;flex-shrink:0;margin-top:.1em;
  background:var(--ca2);
  display:flex;align-items:center;justify-content:center;
}
.cs-ai-dot::after{content:'';width:8px;height:8px;border-radius:50%;background:var(--ca);}
.cs-ai-text{font-size:.875rem;color:var(--fg2);line-height:1.6;}
.cs-ai-text strong{color:var(--dark2);font-weight:600;}

/* ─── MEDIA SECTION ──────────────────────────────────────────────────────── */
#cs-media{background:var(--ch2);}
.cs-media-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  grid-template-rows:auto auto;
  gap:.875rem;
  margin-top:2.5rem;
}
.cs-media-item{
  position:relative;overflow:hidden;border-radius:14px;
  background:var(--ch1);
  border:1px solid var(--border-d);
}
.cs-media-item::before{content:'';display:block;padding-top:75%;} /* 4:3 */
.cs-media-item.wide{grid-column:span 2;}
.cs-media-item.wide::before{padding-top:56.25%;} /* 16:9 */
.cs-media-item.tall::before{padding-top:133%;} /* 3:4 portrait */
.cs-media-item img,
.cs-media-item video,
.cs-media-item iframe{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border:none;
}
.cs-media-caption{
  position:absolute;bottom:0;left:0;right:0;
  padding:.75rem 1rem;
  background:linear-gradient(to top,rgba(0,0,0,.65) 0%,transparent 100%);
  font-size:.5rem;font-weight:700;color:rgba(255,255,255,.65);
  letter-spacing:.1em;text-transform:uppercase;
}
/* Placeholder state for media items */
.cs-media-item.ph{
  background:linear-gradient(135deg,var(--ch1) 0%,rgba(255,255,255,.04) 100%);
}
.cs-media-ph-inner{
  position:absolute;inset:0;
  display:flex;align-items:center;justify-content:center;
}
/* Video embed wrapper */
.cs-video-full{
  position:relative;
  border-radius:14px;overflow:hidden;
  aspect-ratio:9/16;
  max-width:340px;
  background:var(--ch1);
  border:1px solid var(--border-d);
}
.cs-video-full video,
.cs-video-full iframe{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border:none;
}
.cs-reels-row{
  display:flex;gap:.875rem;
  overflow-x:auto;
  padding-bottom:.5rem;
  margin-top:2.5rem;
  scrollbar-width:none;
}
.cs-reels-row::-webkit-scrollbar{display:none;}
.cs-reel{
  flex-shrink:0;
  width:220px;
  aspect-ratio:9/16;
  border-radius:14px;
  overflow:hidden;
  background:var(--ch1);
  border:1px solid var(--border-d);
  position:relative;
}
.cs-reel video,
.cs-reel iframe{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border:none;
}
.cs-reel.ph{
  background:linear-gradient(180deg,var(--ch1) 0%,rgba(255,255,255,.05) 50%,var(--ch1) 100%);
  display:flex;align-items:center;justify-content:center;
}

/* ─── RESULTS ────────────────────────────────────────────────────────────── */
#cs-results{background:var(--white);}
.cs-results-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:1.5rem;
  margin-top:3rem;
}
.cs-result-card{
  background:var(--bg);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:2rem 1.75rem;
}
.cs-result-n{
  font-size:clamp(2.25rem,3.5vw,3.5rem);
  font-weight:800;color:var(--dark2);
  letter-spacing:-.05em;line-height:1;
  margin-bottom:.5rem;
}
.cs-result-n em{font-style:normal;color:inherit;}
.cs-result-l{
  font-size:.5625rem;font-weight:700;
  text-transform:uppercase;letter-spacing:.1em;
  color:var(--fg3);margin-bottom:.75rem;
}
.cs-result-desc{font-size:.875rem;color:var(--fg2);line-height:1.6;}
/* Timeline row */
.cs-timeline{
  margin-top:3.5rem;
  display:flex;flex-direction:column;gap:0;
  border-left:2px solid var(--border);
  padding-left:2rem;
}
.cs-tl-item{
  position:relative;
  padding-bottom:2.25rem;
}
.cs-tl-item:last-child{padding-bottom:0;}
.cs-tl-item::before{
  content:'';
  position:absolute;left:-2.5625rem;top:.2rem;
  width:10px;height:10px;border-radius:50%;
  background:var(--ca);
  box-shadow:0 0 0 3px var(--white),0 0 0 4px var(--ca);
}
.cs-tl-phase{
  font-size:.5rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ca);margin-bottom:.375rem;
}
.cs-tl-title{
  font-size:.9375rem;font-weight:700;color:var(--dark2);
  letter-spacing:-.02em;margin-bottom:.375rem;
}
.cs-tl-desc{font-size:.875rem;color:var(--fg2);line-height:1.6;}

/* ─── QUOTE / TESTIMONIAL ────────────────────────────────────────────────── */
#cs-quote{background:var(--ch2);}
.cs-quote{
  max-width:760px;margin:0 auto;text-align:center;
}
.cs-quote-mark{
  font-size:5rem;font-weight:800;color:var(--ca);
  line-height:.5;margin-bottom:2rem;font-family:Georgia,serif;
}
.cs-quote-text{
  font-size:clamp(1.25rem,2.5vw,2rem);font-weight:700;
  color:#fff;letter-spacing:-.035em;line-height:1.35;
  margin-bottom:2rem;
}
.cs-quote-attr{
  display:flex;align-items:center;justify-content:center;gap:1rem;
}
.cs-quote-photo{
  width:48px;height:48px;border-radius:50%;object-fit:cover;
  border:2px solid rgba(255,255,255,.15);
  background:rgba(255,255,255,.08);
  flex-shrink:0;
}
.cs-quote-name{font-size:.875rem;font-weight:600;color:#fff;text-align:left;}
.cs-quote-role{font-size:.75rem;color:rgba(255,255,255,.4);text-align:left;}

/* ─── CTA ────────────────────────────────────────────────────────────────── */
#cs-cta{background:var(--ch2);padding:clamp(4rem,8vw,6rem) 0;}
.cs-cta-inner{
  max-width:640px;
  text-align:center;
  margin:0 auto;
}
.cs-cta-h{
  font-size:clamp(1.75rem,3.5vw,3rem);font-weight:800;
  color:#fff;letter-spacing:-.04em;line-height:1.1;
  margin-bottom:1.25rem;
}
.cs-cta-sub{
  font-size:.9375rem;color:rgba(255,255,255,.45);
  line-height:1.7;margin-bottom:2.5rem;
  max-width:480px;margin-left:auto;margin-right:auto;
}
.btn{
  display:inline-flex;align-items:center;gap:.5rem;
  background:var(--green);color:#fff;
  padding:.875rem 2rem;border-radius:10px;
  font-family:var(--ff);font-weight:700;font-size:.9375rem;
  text-decoration:none;letter-spacing:-.01em;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s;
  box-shadow:0 0 0 0 rgba(34,197,94,.3);
}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(34,197,94,.25);filter:brightness(1.08);}
.btn:active{transform:translateY(0);transition-duration:.1s;}
/* Next cases nav */
.cs-nav-cases{
  display:flex;gap:1rem;justify-content:center;
  margin-top:3.5rem;flex-wrap:wrap;
}
.cs-nav-case{
  display:flex;align-items:center;gap:.75rem;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.08);
  border-radius:12px;padding:.875rem 1.25rem;
  text-decoration:none;
  transition:background .2s,border-color .2s;
  flex:1;min-width:200px;max-width:280px;
}
.cs-nav-case:hover{background:rgba(255,255,255,.09);border-color:rgba(255,255,255,.14);}
.cs-nav-case-txt{flex:1;}
.cs-nav-case-lbl{font-size:.5rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:rgba(255,255,255,.32);margin-bottom:.25rem;}
.cs-nav-case-name{font-size:.875rem;font-weight:700;color:rgba(255,255,255,.82);}
.cs-nav-case-arr{font-size:1rem;color:rgba(255,255,255,.3);transition:transform .3s var(--ease);}
.cs-nav-case:hover .cs-nav-case-arr{transform:translateX(4px);}

/* ─── FOOTER ─────────────────────────────────────────────────────────────── */
footer.cs-footer{
  background:var(--fg);
  padding:2rem var(--pad);
}
.cs-footer-inner{
  max-width:1280px;margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;
  flex-wrap:wrap;gap:1rem;
}
.cs-footer-brand{
  display:flex;align-items:center;gap:.75rem;text-decoration:none;
}
.cs-footer-brand img{height:16px;width:auto;opacity:.6;}
.cs-footer-copy{font-size:.75rem;color:rgba(255,255,255,.3);}
.cs-footer-links{display:flex;gap:1.5rem;}
.cs-footer-links a{font-size:.75rem;color:rgba(255,255,255,.3);text-decoration:none;transition:color .2s;}
.cs-footer-links a:hover{color:rgba(255,255,255,.7);}

/* ─── SCROLL REVEAL ──────────────────────────────────────────────────────── */
.rv{opacity:0;transform:translateY(28px);transition:opacity .7s var(--ease),transform .7s var(--ease);}
.rv.in{opacity:1;transform:none;}
.rv2{opacity:0;transform:translateY(20px);transition:opacity .65s var(--ease),transform .65s var(--ease);}
.rv2.in{opacity:1;transform:none;}

/* ─── RESPONSIVE ─────────────────────────────────────────────────────────── */
@media(max-width:900px){
  .cs-brief-grid{grid-template-columns:1fr;}
  .cs-results-grid{grid-template-columns:1fr 1fr;}
  .cs-media-grid{grid-template-columns:1fr 1fr;}
  .cs-media-item.wide{grid-column:span 2;}
}
@media(max-width:600px){
  .cs-stats{gap:1.5rem;}
  .cs-results-grid{grid-template-columns:1fr;}
  .cs-media-grid{grid-template-columns:1fr;}
  .cs-media-item.wide{grid-column:span 1;}
  .cs-media-item.wide::before{padding-top:75%;}
  .cs-hero-h1{font-size:clamp(1.875rem,8vw,2.5rem);}
  .cs-nav-cases{flex-direction:column;align-items:center;}
  .cs-nav-case{max-width:100%;width:100%;}
}