/* Case studies page - builds on styles.css */
.nav-links a.active{color:var(--text);position:relative}
.nav-links a.active::after{content:'';position:absolute;left:0;right:0;bottom:-6px;height:2px;border-radius:2px;background:var(--accent)}

/* ── HERO ── */
#cs-hero{position:relative;padding:150px 0 30px;overflow:hidden;text-align:center;background:var(--bg)}
#cs-hero::before{content:'';position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(rgba(196,168,122,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(196,168,122,.07) 1px,transparent 1px);background-size:56px 56px;-webkit-mask-image:radial-gradient(ellipse 70% 60% at 50% 25%,#000 20%,transparent 75%);mask-image:radial-gradient(ellipse 70% 60% at 50% 25%,#000 20%,transparent 75%)}
.orb{position:absolute;border-radius:50%;filter:blur(80px);pointer-events:none;animation:cs-float 9s ease-in-out infinite}
.orb.o1{width:420px;height:420px;left:-120px;top:40px;background:rgba(196,168,122,.16)}
.orb.o2{width:360px;height:360px;right:-100px;top:140px;background:rgba(139,115,85,.22);animation-delay:-4s}
@keyframes cs-float{0%,100%{transform:translateY(0)}50%{transform:translateY(-26px)}}
.cs-hero-inner{position:relative;z-index:1;max-width:860px;margin:0 auto;padding:0 24px}
.cs-hero-inner .subhead{max-width:620px}
.cs-stats{position:relative;z-index:1;max-width:980px;margin:44px auto 0;padding:0 24px;display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.cs-stat{padding:22px 14px;border-radius:16px;background:rgba(42,34,22,.65);border:1px solid rgba(196,168,122,.22);backdrop-filter:blur(10px);box-shadow:0 14px 40px rgba(0,0,0,.35);transition:transform .25s,border-color .25s}
.cs-stat:hover{transform:translateY(-4px);border-color:rgba(196,168,122,.5)}
.cs-stat b{display:block;font-size:32px;font-weight:650;letter-spacing:-.03em;background:linear-gradient(135deg,#E3C99B,#C4A87A);-webkit-background-clip:text;background-clip:text;color:transparent}
.cs-stat span{font-size:12px;color:var(--muted)}

/* ── INDUSTRY TILES ── */
#case-tiles{padding:56px 0 90px;scroll-margin-top:70px}
.tiles-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:22px}
.tiles-head h2{font-size:20px;font-weight:650;letter-spacing:-.01em}
.tiles-head p{font-size:13px;color:var(--muted)}
.tiles{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.tile{position:relative;display:flex;flex-direction:column;gap:4px;padding:18px 16px;border-radius:16px;background:#2A2218;border:1px solid rgba(196,168,122,.18);text-decoration:none;color:var(--text);overflow:hidden;transition:transform .25s,border-color .25s,background .25s,box-shadow .25s}
.tile::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 30% 0%,rgba(196,168,122,.14),transparent 60%);opacity:0;transition:opacity .3s}
.tile:hover,.tile:focus-visible{transform:translateY(-4px);border-color:rgba(196,168,122,.55);background:#352B1C;box-shadow:0 0 0 4px rgba(196,168,122,.1),0 14px 34px rgba(0,0,0,.45);outline:none}
.tile:hover::before{opacity:1}
.tile-ico{width:44px;height:44px;border-radius:12px;background:rgba(196,168,122,.12);display:grid;place-items:center;font-size:22px;margin-bottom:8px;position:relative}
.tile-name{font-size:14px;font-weight:600;position:relative}
.tile-metric{font-size:12px;color:var(--accent);position:relative}
.tile-go{position:absolute;right:14px;top:16px;color:var(--muted);transition:transform .2s,color .2s}
.tile:hover .tile-go{color:var(--accent);transform:translate(3px,-3px)}

/* ── CASE SECTIONS ── */
.case{padding:90px 0;scroll-margin-top:50px;border-top:1px solid rgba(196,168,122,.12);background:var(--bg)}
.case.alt{background:#211B12}
.case-head .section-sub{max-width:700px;margin-bottom:44px}
.case-top{display:grid;grid-template-columns:1.05fr 1fr;gap:52px;align-items:center;margin-bottom:60px}
.case.flip .case-img{order:-1}
.cs-block h3{font-size:12px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);margin-bottom:8px}
.cs-block p{color:var(--muted);line-height:1.75;font-size:15px;margin-bottom:22px}
.cs-block ul{list-style:none;display:grid;gap:8px}
.cs-block li{font-size:14px;color:var(--text);padding-left:26px;position:relative}
.cs-block li::before{content:'';position:absolute;left:0;top:3px;width:16px;height:16px;border-radius:50%;background:rgba(196,168,122,.18);border:1px solid rgba(196,168,122,.5)}
.cs-block li::after{content:'';position:absolute;left:5px;top:6px;width:4px;height:7px;border:solid var(--accent);border-width:0 2px 2px 0;transform:rotate(45deg)}
.case-img{position:relative;margin:0;border-radius:20px;overflow:hidden;border:1px solid rgba(196,168,122,.25);box-shadow:0 24px 60px rgba(0,0,0,.5)}
.case-img img{display:block;width:100%;height:auto;transition:transform .6s}
.case-img:hover img{transform:scale(1.03)}
.case-img figcaption{position:absolute;right:14px;top:14px;font-size:12px;padding:6px 12px;border-radius:20px;background:rgba(26,22,16,.82);border:1px solid rgba(196,168,122,.25);backdrop-filter:blur(8px);color:var(--muted)}
.sub-title{font-size:12px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);margin:0 0 16px}

/* process flow */
.flow-wrap{margin-bottom:56px}
.flow{display:flex;align-items:stretch}
.flow-step{flex:1;padding:22px 16px;border-radius:16px;background:#2A2218;border:1px solid rgba(196,168,122,.18);text-align:center;transition:border-color .25s,transform .25s,background .25s}
.case.alt .flow-step{background:#2A2218}
.flow-step:hover{border-color:rgba(196,168,122,.5);background:#352B1C;transform:translateY(-3px)}
.flow-ico{display:grid;place-items:center;width:48px;height:48px;margin:0 auto 12px;border-radius:50%;background:rgba(196,168,122,.12);border:1px solid rgba(196,168,122,.3);font-size:22px}
.flow-step b{display:block;font-size:14px;margin-bottom:4px}
.flow-step small{display:block;font-size:12px;color:var(--muted);line-height:1.5}
.flow-arrow{align-self:center;padding:0 8px;color:rgba(196,168,122,.6);font-size:20px;animation:cs-nudge 1.8s ease-in-out infinite}
@keyframes cs-nudge{0%,100%{transform:translateX(0)}50%{transform:translateX(5px)}}

/* KPIs */
.kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:16px}
.kpi{padding:28px 24px;border-radius:16px;background:linear-gradient(160deg,#352B1C,#2A2218);border:1px solid rgba(196,168,122,.22)}
.kpi-num{font-size:46px;font-weight:650;letter-spacing:-.03em;line-height:1.1;background:linear-gradient(135deg,#E3C99B,#C4A87A);-webkit-background-clip:text;background-clip:text;color:transparent}
.kpi-label{font-size:13px;color:var(--muted);margin-top:6px}

/* charts */
.charts{display:grid;grid-template-columns:1.3fr 1.2fr .8fr;gap:16px;margin-bottom:40px}
.chart-card{padding:24px;border-radius:16px;background:#2A2218;border:1px solid rgba(196,168,122,.15)}
.chart-card h4{font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:16px}
.legend{display:flex;gap:16px;font-size:11px;color:var(--muted);margin-bottom:16px}
.legend i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:6px;vertical-align:-1px}
.legend .lb{background:#6b5d45}.legend .la{background:linear-gradient(90deg,#8B7355,#E3C99B)}
.bar-row{margin-bottom:18px}
.bar-label{display:block;font-size:12px;color:var(--text);margin-bottom:7px}
.bar-track{display:flex;align-items:center;gap:8px;margin-bottom:5px}
.bar-track .bar{display:block;height:9px;border-radius:5px;width:0;transition:width 1.3s cubic-bezier(.2,.8,.2,1)}
.bar.before{background:#6b5d45}
.bar.after{background:linear-gradient(90deg,#8B7355,#E3C99B)}
.bar-track em{font-style:normal;font-size:11px;color:var(--muted);min-width:34px}
.in .bar{width:var(--w)}
.line-svg{display:block;width:100%;height:auto}
.line-svg text{fill:#C8B898;font-size:9px}
.line-svg .grid{stroke:rgba(196,168,122,.14);stroke-width:1}
.line{fill:none;stroke:#C4A87A;stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:1;stroke-dashoffset:1;transition:stroke-dashoffset 1.8s ease}
.area{fill:rgba(196,168,122,.12);opacity:0;transition:opacity 1s 1.2s}
.dot{fill:#1A1610;stroke:#C4A87A;stroke-width:2;opacity:0;transition:opacity .4s 1.5s}
.in .line{stroke-dashoffset:0}
.in .area,.in .dot{opacity:1}
.donut-wrap{display:grid;place-items:center;gap:10px;text-align:center}
.donut{width:130px;height:130px}
.donut-bg{fill:none;stroke:rgba(196,168,122,.15);stroke-width:12}
.donut-fg{fill:none;stroke:#C4A87A;stroke-width:12;stroke-linecap:round;stroke-dasharray:0 100;transition:stroke-dasharray 1.6s ease}
.in .donut-fg{stroke-dasharray:var(--p) 100}
.donut text{fill:#F5F0E8;font-size:22px;font-weight:650;text-anchor:middle}
.donut-wrap small{font-size:12px;color:var(--muted);line-height:1.5;max-width:150px}

/* quote + CTA */
.quote{margin:0 0 30px;padding:28px 32px;border-left:3px solid var(--accent);background:rgba(196,168,122,.06);border-radius:0 16px 16px 0;font-size:18px;line-height:1.6;font-style:italic}
.quote cite{display:block;font-size:13px;font-style:normal;color:var(--muted);margin-top:12px}
.case-cta{display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.back-link{color:var(--muted);text-decoration:none;font-size:14px;transition:color .2s}
.back-link:hover{color:var(--accent)}
.cs-note{padding:34px 0 0;text-align:center;font-size:12px;color:var(--muted);opacity:.8}
.cs-note-wrap{padding:30px 24px;background:#211B12;border-top:1px solid rgba(196,168,122,.12)}

/* reveal */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s,transform .7s}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .bar,.line,.area,.dot,.donut-fg,.orb,.flow-arrow{transition:none;animation:none}
  .bar{width:var(--w)}.line{stroke-dashoffset:0}.area,.dot{opacity:1}.donut-fg{stroke-dasharray:var(--p) 100}
}

/* responsive */
@media(max-width:1100px){.tiles{grid-template-columns:repeat(3,1fr)}}
@media(max-width:900px){
  .case-top{grid-template-columns:1fr;gap:32px}
  .case.flip .case-img{order:0}
  .charts{grid-template-columns:1fr}
  .flow{flex-direction:column;gap:6px}
  .flow-arrow{transform:rotate(90deg);animation:none;padding:2px 0}
  .cs-stats{grid-template-columns:repeat(2,1fr)}
  .kpis{grid-template-columns:1fr}
  .case{padding:64px 0}
}
@media(max-width:560px){
  #cs-hero{padding-top:120px}
  .tiles{grid-template-columns:repeat(2,1fr)}
  .quote{padding:22px;font-size:16px}
}