/* ============================================================
   RICHMOND SURGICAL ARTS — Case Study
   RSA brand world · clean white + sky blue (#57bbe5) + cool ink
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500;1,600&family=Hanken+Grotesk:wght@300;400;500;600&display=swap');

:root{
  /* surfaces (named --black* for compatibility, but light/cool) */
  --black:#fbfdfe;            /* clean cool white base */
  --black-2:#eaf2f7;          /* soft sky-grey (alternating sections) */
  --black-3:#dde9f0;

  --paper:#2b343b;            /* cool charcoal ink (text) — matches wordmark */
  --muted:rgba(43,52,59,.66);
  --faint:rgba(43,52,59,.42);

  --gold:#2a86c4;             /* RSA azure accent (wordmark/button blue) */
  --gold-bright:#1c6aa6;      /* deeper azure for emphasis (readable on white) */
  --gold-deep:#134f80;
  --gold-line:rgba(87,187,229,.42);   /* brand-blue hairlines */
  --gold-glow:rgba(87,187,229,.20);
  --brand:#57bbe5;            /* logo circle blue */

  --serif:'Cormorant Garamond', 'Times New Roman', serif;
  --sans:'Hanken Grotesk', -apple-system, system-ui, sans-serif;

  --ease:cubic-bezier(.19,1,.22,1);
  --ease2:cubic-bezier(.4,0,.1,1);
  --maxw:1280px;
  --gutter:clamp(22px,5.5vw,90px);
}

*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;scroll-behavior:smooth}
body{
  font-family:var(--sans);
  background:var(--black);
  color:var(--paper);
  overflow-x:hidden;
  font-weight:300;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}

.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
section{position:relative}
.scene{min-height:100svh;display:flex;align-items:center;padding-block:clamp(80px,12vh,150px)}
.scene-tall{min-height:116svh}

/* ---- paper grain + soft edge (very subtle on light) ---- */
.grain{position:fixed;inset:0;z-index:300;pointer-events:none;opacity:.03;mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");}
html.no-grain .grain{display:none}
.vignette{position:fixed;inset:0;z-index:299;pointer-events:none;
  background:radial-gradient(135% 105% at 50% 42%, transparent 62%, rgba(40,90,120,.06) 100%);}

/* ---- soft blue glow blob ---- */
.glow{position:absolute;border-radius:50%;filter:blur(95px);background:var(--gold-glow);pointer-events:none;z-index:0}

/* ============================================================
   TYPE
   ============================================================ */
.eyebrow{
  font-family:var(--sans);font-weight:500;
  font-size:clamp(10px,.78vw,12.5px);
  letter-spacing:.32em;text-transform:uppercase;
  color:var(--gold);
  display:inline-flex;align-items:center;gap:1em;
}
.eyebrow .ln{width:34px;height:1px;background:var(--gold);opacity:.75}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px var(--brand)}

.serif{font-family:var(--serif);font-weight:500;line-height:.96;letter-spacing:-.005em}
.ital{font-family:var(--serif);font-style:italic;font-weight:500}

.display{
  font-family:var(--serif);font-weight:500;
  font-size:clamp(54px,11.5vw,172px);
  line-height:.9;letter-spacing:-.012em;
}
.h-scene{
  font-family:var(--serif);font-weight:500;
  font-size:clamp(40px,7vw,104px);
  line-height:.98;letter-spacing:-.01em;
  text-wrap:balance;
}
.h-sub{font-family:var(--serif);font-weight:500;font-size:clamp(26px,3vw,44px);line-height:1.06}

.gold{color:var(--gold)}
.gold-bright{color:var(--gold-bright)}

.lede{
  font-family:var(--sans);font-weight:300;
  font-size:clamp(16px,1.25vw,20px);
  line-height:1.64;color:var(--muted);
  max-width:48ch;
}
.lede b{color:var(--paper);font-weight:500}
.kicker{font-family:var(--sans);font-weight:600;font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--gold)}
.small{font-family:var(--sans);font-size:13px;line-height:1.5;color:var(--faint)}

/* ============================================================
   CORNER BRACKETS
   ============================================================ */
.brackets{position:absolute;inset:clamp(14px,2vw,30px);pointer-events:none;z-index:3}
.brackets .bk{position:absolute;width:26px;height:26px;border:1px solid var(--gold-line)}
.brackets .bk:nth-child(1){top:0;left:0;border-right:0;border-bottom:0}
.brackets .bk:nth-child(2){top:0;right:0;border-left:0;border-bottom:0}
.brackets .bk:nth-child(3){bottom:0;left:0;border-right:0;border-top:0}
.brackets .bk:nth-child(4){bottom:0;right:0;border-left:0;border-top:0}

/* ============================================================
   BUTTONS / CHIPS
   ============================================================ */
.btn{
  display:inline-flex;align-items:center;gap:.85em;
  font-family:var(--sans);font-weight:600;font-size:13px;letter-spacing:.1em;text-transform:uppercase;
  padding:1.15em 1.8em;cursor:pointer;border:1px solid transparent;
  transition:transform .5s var(--ease),box-shadow .4s,background .4s,color .4s;
}
.btn .arr{transition:transform .5s var(--ease)}
.btn:hover .arr{transform:translateX(6px)}
.btn-gold{background:var(--gold);color:#fff;box-shadow:0 18px 44px -22px rgba(42,156,203,.65)}
.btn-gold:hover{background:var(--gold-bright);transform:translateY(-2px);box-shadow:0 26px 56px -22px rgba(42,156,203,.75)}
.btn-line{background:transparent;border-color:var(--gold-line);color:var(--paper)}
.btn-line:hover{border-color:var(--gold);color:var(--gold-bright)}
.link-u{font-family:var(--sans);font-weight:600;font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--gold);border-bottom:1px solid var(--gold-line);padding-bottom:4px;display:inline-flex;gap:.6em;align-items:center}
.link-u:hover{color:var(--gold-bright);border-color:var(--gold)}

.chip{
  display:inline-flex;align-items:center;gap:.7em;
  font-family:var(--sans);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--gold-bright);
  padding:.6em 1.1em;border:1px solid var(--gold-line);border-radius:999px;background:rgba(87,187,229,.10);
}

/* ============================================================
   PLACEHOLDER MEDIA SLOTS (cool)
   ============================================================ */
.slot{
  position:relative;overflow:hidden;
  background-color:#e1ecf3;
  background-image:repeating-linear-gradient(-45deg,rgba(42,120,160,.10) 0 1px,transparent 1px 14px);
  display:flex;align-items:center;justify-content:center;
  min-height:160px;
}
.slot[data-fill]{background-image:none;background-size:cover;background-position:center}
.slot .tag{font-family:var(--sans);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--faint);text-align:center;line-height:1.7;padding:1.2em;position:relative;z-index:2}
.slot .tag b{display:block;color:var(--gold-bright);font-weight:600;margin-bottom:.5em;letter-spacing:.22em}
.slot::after{content:"";position:absolute;inset:10px;border:1px solid var(--gold-line);opacity:.55;pointer-events:none}
.slot-photo::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(20,50,70,.30));z-index:1}

/* ============================================================
   STATS (big number rows)
   ============================================================ */
.stat-row{display:grid;grid-template-columns:1.1fr 1fr;gap:clamp(20px,5vw,80px);align-items:baseline;
  padding-block:clamp(28px,5vh,60px);border-top:1px solid var(--gold-line)}
.stat-row:last-child{border-bottom:1px solid var(--gold-line)}
.stat-num{font-family:var(--serif);font-weight:500;font-size:clamp(72px,15vw,220px);line-height:.82;letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;color:var(--paper)}
.stat-num .u{color:var(--gold)}
.stat-meta .l{font-family:var(--sans);font-weight:600;font-size:clamp(15px,1.3vw,19px);letter-spacing:.02em}
.stat-meta .d{font-family:var(--sans);font-weight:300;font-size:15px;color:var(--muted);margin-top:.7em;line-height:1.55;max-width:34ch}
@media(max-width:820px){.stat-row{grid-template-columns:1fr;gap:14px}}

/* ============================================================
   MARQUEE
   ============================================================ */
.marquee{overflow:hidden;padding-block:clamp(22px,4vh,40px);border-block:1px solid var(--gold-line)}
.marquee-track{display:flex;width:max-content;animation:marq 40s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee-item{font-family:var(--serif);font-style:italic;font-size:clamp(26px,3.4vw,52px);white-space:nowrap;color:var(--paper)}
.marquee-item .s{font-style:normal;color:var(--brand);font-size:.5em;margin-inline:.85em;vertical-align:.18em}
@keyframes marq{to{transform:translateX(-50%)}}

/* ---- hero case dossier ---- */
.dossier{position:relative;padding:26px 30px;border:1px solid var(--gold-line);min-width:300px;max-width:380px;background:rgba(255,255,255,.62);backdrop-filter:blur(3px)}
.dossier .d-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.dossier .row{display:flex;justify-content:space-between;align-items:baseline;gap:22px;padding:11px 0;border-top:1px solid var(--gold-line)}
.dossier .k{font-family:var(--sans);font-weight:600;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--gold-bright);white-space:nowrap}
.dossier .v{font-family:var(--sans);font-weight:300;font-size:13.5px;color:var(--paper);text-align:right;line-height:1.45}
.dossier .v .gold{color:var(--gold)}

/* ============================================================
   MOTION  (scrub + reveal)
   ============================================================ */
[data-scrub]{will-change:transform,opacity}
.rise{opacity:0;transform:translateY(56px);transition:opacity 1.1s var(--ease),transform 1.2s var(--ease)}
.rise.in{opacity:1;transform:none}
[data-stagger]>*{opacity:0;transform:translateY(42px);transition:opacity 1s var(--ease),transform 1.1s var(--ease)}
[data-stagger].in>*{opacity:1;transform:none}

.mask{overflow:hidden;display:block}
.mask>span{display:block;transform:translateY(110%);transition:transform 1.15s var(--ease)}
.mask.in>span{transform:none}

.fade{opacity:0;transition:opacity 1.4s var(--ease)}
.fade.in{opacity:1}

html.no-motion .rise,html.no-motion [data-stagger]>*,html.no-motion .mask>span,html.no-motion .fade{opacity:1!important;transform:none!important}
html.no-motion [data-scrub]{transform:none!important}
html.no-motion .marquee-track{animation:none}

/* ============================================================
   PROGRESS
   ============================================================ */
.progress{position:fixed;top:0;left:0;height:2px;width:0;background:linear-gradient(90deg,var(--gold-deep),var(--brand));z-index:320}

/* utility */
.center-col{display:flex;flex-direction:column}
.between{display:flex;justify-content:space-between}
.items-center{align-items:center}
.items-end{align-items:flex-end}
.wrapf{flex-wrap:wrap}
.gap-s{gap:14px}.gap-m{gap:26px}.gap-l{gap:46px}
.mt-l{margin-top:clamp(30px,5vh,56px)}
.mb-head{margin-bottom:clamp(28px,4vh,46px)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,80px);align-items:center}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(16px,2vw,30px)}
@media(max-width:880px){.grid2,.grid3{grid-template-columns:1fr}}

/* ---- long-site showcase ---- */
.scroll-site{position:relative;height:560px;overflow:hidden;background:#e6eef4}
.scroll-site-track{animation:panSite 60s linear infinite}
.scroll-site-track img{width:100%;display:block}
@keyframes panSite{from{transform:translateY(0)}to{transform:translateY(-50%)}}
html.no-motion .scroll-site-track{animation:none;transform:translateY(0)}

/* ---- vertical phone video ---- */
.phone{position:relative;aspect-ratio:9/16;border:1px solid var(--gold-line);overflow:hidden;background:#000;box-shadow:0 40px 80px -44px rgba(20,50,70,.45)}
.phone iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.phone .ph-tag{position:absolute;bottom:0;left:0;right:0;z-index:3;padding:14px 16px;background:linear-gradient(transparent,rgba(20,50,70,.7));pointer-events:none}

/* ---- click-to-play YouTube facade ---- */
.ytlite{position:relative;cursor:pointer;overflow:hidden;background:#d7e6ef center/cover no-repeat}
.ytlite::before{content:"";position:absolute;inset:0;background:linear-gradient(rgba(20,50,70,.05),rgba(20,50,70,.34));z-index:1;transition:opacity .4s}
.ytlite .play{position:absolute;inset:0;z-index:2;display:flex;align-items:center;justify-content:center;transition:transform .5s var(--ease)}
.ytlite:hover .play{transform:scale(1.08)}
.ytlite .play span{width:74px;height:74px;border-radius:50%;border:1px solid #fff;background:rgba(255,255,255,.30);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;box-shadow:0 12px 44px -10px rgba(20,50,70,.5)}
.ytlite iframe{position:absolute;inset:0;width:100%;height:100%;border:0;z-index:5}
.ytlite.loaded .play,.ytlite.loaded::before{opacity:0;pointer-events:none}

/* ---- design note ---- */
.note{background:#e9f1f6;border-bottom:1px solid var(--gold-line);font-family:var(--sans);font-size:13px;line-height:1.7;color:var(--muted)}
.note .wrap{padding-block:26px}
.note b{color:var(--gold-bright);font-weight:600}
.note .t{font-family:var(--sans);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--gold);margin-bottom:12px;display:block}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* descender room so masked-reveal headings (e.g. "surgeon.") are not clipped */
.mask{padding-bottom:.18em;margin-bottom:-.18em}