/* Icarus Growth — Case Studies
   Light editorial web system (THE-BRAIN/BRAND.md §6). Light is the default;
   dark rides along on the toggle. Role swap, not inversion:
     highlight  lime #E0F014  -> green  #15803D
     accent     magenta       -> purple #8E009E
     button     lime          -> unchanged (the one thing you click) */

:root[data-theme="light"]{
  --bg:#F8F8F8; --panel:#FFFFFF; --panel2:#F3F3F5;
  --ink:#14151C; --ink-2:#3A3B42; --ink-3:#14151C;
  --mute:#5F6068; --mute2:#8A8B93; --line:#E2E2E6;
  --hl:#15803D; --accent:#8E009E; --orange:#D93F00;
  --tint-hl:rgba(21,128,61,.07); --line-hl:rgba(21,128,61,.34);
  --glow1:rgba(142,0,158,.06); --glow2:rgba(21,128,61,.045);
  --shadow:0 8px 24px rgba(20,21,28,.10); --shadow-h:0 10px 30px rgba(20,21,28,.16);
  --veil:rgba(248,248,248,.96);
}
:root[data-theme="dark"]{
  --bg:#14151C; --panel:#1b1c24; --panel2:#20212b;
  --ink:#F8F8F8; --ink-2:#cfcfd6; --ink-3:#e8e8ee;
  --mute:#9a9aa4; --mute2:#6f7079; --line:#2a2b35;
  --hl:#E0F014; --accent:#E600FF; --orange:#FF4F00;
  --tint-hl:rgba(224,240,20,.07); --line-hl:rgba(224,240,20,.42);
  --glow1:rgba(230,0,255,.10); --glow2:rgba(224,240,20,.05);
  --shadow:0 8px 24px rgba(0,0,0,.34); --shadow-h:0 10px 30px rgba(0,0,0,.46);
  --veil:rgba(20,21,28,.96);
}
:root{
  --btn-bg:#E0F014; --btn-fg:#14151C; --btn-bg-h:#eaff2e;
  --grad:linear-gradient(135deg,#E600FF,#19c37d);
  --sans:'DM Sans',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,'SFMono-Regular',Menlo,monospace;
  --serif:'Fraunces',Georgia,serif; --wrap:1120px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;background:var(--bg)}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);
  font-size:16px;line-height:1.62;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  background-image:radial-gradient(1100px 460px at 78% -8%,var(--glow1),transparent 60%),
                   radial-gradient(900px 420px at 8% 4%,var(--glow2),transparent 55%);
  background-repeat:no-repeat;background-attachment:fixed}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.m{color:var(--hl);font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:-.005em}

/* ── top bar ── */
.bar{position:sticky;top:0;z-index:40;background:var(--veil);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line)}
.bar .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.brand{display:flex;align-items:center;gap:11px;font-weight:700;letter-spacing:-.01em;color:var(--ink)}
.dot{width:22px;height:22px;border-radius:7px;background:var(--grad);flex:0 0 auto;
  box-shadow:0 0 0 1px rgba(20,21,28,.06),0 6px 18px rgba(230,0,255,.22)}
.brand small{display:block;font-family:var(--mono);font-weight:500;font-size:10px;
  letter-spacing:.24em;text-transform:uppercase;color:var(--mute);margin-top:1px}
.barright{display:flex;align-items:center;gap:10px}
.themebtn{appearance:none;cursor:pointer;background:none;border:1px solid var(--line);
  border-radius:999px;color:var(--mute);font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;
  text-transform:uppercase;padding:8px 13px;transition:color .18s,border-color .18s}
.themebtn:hover{color:var(--ink);border-color:var(--mute2)}
/* the one filled lime element on the page — §6: lime stays the thing you click */
.barcta{font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--btn-fg);background:var(--btn-bg);text-decoration:none;padding:10px 16px;
  border-radius:999px;font-weight:700;transition:background .18s,transform .18s}
.barcta:hover{background:var(--btn-bg-h);transform:translateY(-1px)}
@media(max-width:640px){.barcta{display:none}}

/* ── hero ── */
.hero{padding:86px 0 44px}
.eyebrow{font-family:var(--mono);font-size:12px;font-weight:500;letter-spacing:.26em;
  text-transform:uppercase;color:var(--accent);margin:0 0 22px}
.hero h1{font-weight:800;font-size:clamp(52px,9vw,92px);line-height:.98;letter-spacing:-.04em;margin:0}
.hero .sub{color:var(--mute);font-size:19px;margin:20px 0 0;max-width:44ch}

/* ── tabs ── */
.tabsrail{position:sticky;top:64px;z-index:30;background:var(--veil);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);border-top:1px solid var(--line)}
.tabs{display:flex;gap:2px;overflow-x:auto;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.tab{flex:0 0 auto;appearance:none;background:none;border:0;cursor:pointer;font-family:var(--mono);
  font-size:12.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--mute);padding:17px 16px;
  position:relative;white-space:nowrap;transition:color .18s}
.tab:hover{color:var(--ink)}
.tab[aria-selected="true"]{color:var(--ink);font-weight:700}
.tab[aria-selected="true"]::after{content:"";position:absolute;left:16px;right:16px;bottom:-1px;height:2px;
  background:var(--hl);border-radius:2px 2px 0 0}
.tab:focus-visible{outline:2px solid var(--accent);outline-offset:-4px;border-radius:6px}

main{padding:56px 0 40px;min-height:60vh}
.panel[hidden]{display:none}
.panel{animation:fade .34s ease both}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.peyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.24em;text-transform:uppercase;
  color:var(--accent);margin:0 0 14px}
.ptitle{font-weight:800;font-size:clamp(30px,4.6vw,44px);letter-spacing:-.03em;margin:0;text-wrap:balance}
.plede{color:var(--mute);max-width:66ch;font-size:17px;margin:14px 0 44px}

/* ── overview: type + hairlines, no containers (Boxes Are A Scarce Resource) ── */
.overview{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:8px 52px}
@media(max-width:760px){.overview{grid-template-columns:1fr}}
.ov{padding:22px 0;border-top:1px solid var(--line)}
.ovco{font-family:var(--mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--accent);margin:0 0 12px}
.ovlines{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.ovlines li{position:relative;padding-left:22px;font-size:19.5px;line-height:1.42;color:var(--ink-2)}
.ovlines li::before{content:"";position:absolute;left:2px;top:11px;width:6px;height:6px;border-radius:50%;
  background:var(--mute2)}

/* ── cards ── */
.cards{display:flex;flex-direction:column;gap:22px}
.card{display:grid;grid-template-columns:1fr 300px;background:var(--panel);border:1px solid var(--line);
  border-radius:18px;overflow:hidden;box-shadow:var(--shadow)}
.cbody{padding:34px 36px 32px}
.ceyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--mute);margin:0 0 12px}
.cname{font-weight:800;font-size:28px;letter-spacing:-.026em;margin:0 0 18px}
.pts{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:13px}
.pts li{position:relative;padding-left:20px;color:var(--ink-2);font-size:16px;line-height:1.6}
.pts li::before{content:"";position:absolute;left:2px;top:11px;width:6px;height:6px;border-radius:50%;
  background:var(--mute2)}
.result{margin-top:22px;padding-top:22px;border-top:1px solid var(--line)}
.rlabel{display:inline-block;font-family:var(--mono);font-size:11px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--hl);font-weight:700;margin-bottom:12px}
.result p{margin:0;font-size:24px;line-height:1.42;font-weight:500;color:var(--ink)}
.quote{margin:24px 0 0;padding:20px 0 0;border-top:1px dashed var(--line);display:flex;flex-direction:column;gap:10px}
.quote p{margin:0;font-family:var(--serif);font-style:italic;font-size:19px;line-height:1.5;color:var(--ink)}
.quote p::before{content:"\201C";color:var(--hl);margin-right:1px}
.quote p::after{content:"\201D";color:var(--hl)}
.quote cite{font-family:var(--mono);font-style:normal;font-size:11px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--mute)}

/* ── portrait well (stays dark in both themes — it is a photo, not a surface) ── */
.shot{position:relative;margin:0;border-left:1px solid var(--line);background:#0f1015;min-height:280px}
.shot img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 20%}
.shot figcaption{position:absolute;left:0;right:0;bottom:0;padding:46px 18px 16px;display:flex;
  flex-direction:column;gap:2px;color:#fff;
  background:linear-gradient(to top,rgba(10,10,14,.95) 10%,rgba(10,10,14,.5) 55%,transparent)}
.shot .tag{font-family:var(--mono);font-size:9.5px;letter-spacing:.18em;text-transform:uppercase;
  color:rgba(255,255,255,.92);margin-bottom:6px;display:inline-flex;align-items:center;gap:6px}
.shot .tag::before{content:"";width:0;height:0;border-style:solid;border-width:4px 0 4px 6px;
  border-color:transparent transparent transparent rgba(255,255,255,.92)}
.shot .pn{font-weight:700;font-size:15px;letter-spacing:-.01em}
.shot .pr{font-family:var(--mono);font-size:10px;letter-spacing:.05em;color:rgba(255,255,255,.66);
  text-transform:uppercase}
@media(max-width:780px){
  .card{grid-template-columns:1fr}
  .shot{border-left:0;border-top:1px solid var(--line);order:-1;min-height:0;height:300px}
  .cbody{padding:26px 24px 24px}
  .result p{font-size:21px}
}

/* ── footer ── */
.foot{border-top:1px solid var(--line);margin-top:44px;padding:40px 0 60px}
.foot .wrap{display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between}
.foot .note{color:var(--mute2);font-size:13px;max-width:54ch}
.foot .url{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--hl);font-weight:700;text-decoration:none}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}