/* ============ FONTS ============ */
@font-face{font-family:'Space Grotesk';src:url('assets/fonts/space-grotesk-500.woff2') format('woff2');font-weight:500;font-display:swap}
@font-face{font-family:'Space Grotesk';src:url('assets/fonts/space-grotesk-600.woff2') format('woff2');font-weight:600;font-display:swap}
@font-face{font-family:'Space Grotesk';src:url('assets/fonts/space-grotesk-700.woff2') format('woff2');font-weight:700;font-display:swap}
@font-face{font-family:'Inter';src:url('assets/fonts/inter-400.woff2') format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:'Inter';src:url('assets/fonts/inter-500.woff2') format('woff2');font-weight:500;font-display:swap}
@font-face{font-family:'Inter';src:url('assets/fonts/inter-600.woff2') format('woff2');font-weight:600;font-display:swap}
@font-face{font-family:'Inter';src:url('assets/fonts/inter-700.woff2') format('woff2');font-weight:700;font-display:swap}

/* ============ TOKENS ============ */
:root{
  --bg:#fbfaf9; --surface:#fff; --surface-2:#f7f4f1;
  --border:#ece7e1; --border-soft:#f0ebe5; --border-strong:#ddd5cb;
  --text:#1c1917; --text-2:#44403c; --text-3:#57534e; --muted:#78716c; --faint:#a8a29e;
  --accent:#ea580c; --accent-hover:#c2410c; --accent-wash:#fff1e8;
  --radius:6px; --radius-sm:4px;
  --rail-w:340px; --maxw:1240px;
  --font-display:'Space Grotesk',system-ui,sans-serif;
  --font-body:'Inter',system-ui,sans-serif;
  --step:1.6;
  --ease:cubic-bezier(.4,0,.2,1);
}
[data-theme="dark"]{
  --bg:#0d0b0a; --surface:#161210; --surface-2:#1b1614;
  --border:#271f1a; --border-soft:#221b16; --border-strong:#352a22;
  --text:#f5f3f1; --text-2:#d6d0cb; --text-3:#a8a29e; --muted:#8a807a; --faint:#6b625c;
  --accent:#fb923c; --accent-hover:#fdba74; --accent-wash:#231510;
}

/* ============ RESET / BASE ============ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  font-family:var(--font-body);font-size:16px;line-height:var(--step);
  background:var(--bg);color:var(--text);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  transition:background .2s var(--ease),color .2s var(--ease);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:600;letter-spacing:-.02em;line-height:1.15}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:var(--radius-sm)}
::selection{background:var(--accent);color:#fff}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}

/* ============ LAYOUT SHELL ============ */
.topbar{position:sticky;top:0;z-index:40;display:flex;justify-content:space-between;align-items:center;
  padding:18px clamp(20px,4vw,44px);background:color-mix(in srgb,var(--bg) 88%,transparent);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--border-soft)}
.topbar .brand{font-family:var(--font-display);font-weight:700;font-size:17px;letter-spacing:-.02em}
.nav{display:flex;align-items:center;gap:clamp(16px,2vw,28px)}
.nav-links{display:flex;align-items:center;gap:clamp(16px,2vw,28px)}
.nav a{font-weight:500;font-size:14px;color:var(--text-3);transition:color .15s var(--ease)}
.nav a:hover,.nav a[aria-current="page"]{color:var(--accent)}
.theme-toggle{width:38px;height:38px;display:grid;place-items:center;border:1px solid var(--border);
  border-radius:var(--radius);background:var(--surface);color:var(--text-2);cursor:pointer;transition:border-color .15s var(--ease),color .15s var(--ease)}
.theme-toggle:hover{border-color:var(--accent);color:var(--accent)}
.nav-toggle{display:none;width:38px;height:38px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--text-2);cursor:pointer}

.shell{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:var(--rail-w) 1fr;
  gap:0;align-items:start}
.rail{position:sticky;top:73px;align-self:start;padding:clamp(40px,5vw,56px) clamp(28px,3vw,40px);
  border-right:1px solid var(--border-soft)}
.content{padding:clamp(40px,5vw,56px) clamp(28px,4vw,48px);min-width:0}

/* rail internals */
.avatar{width:92px;height:92px;border-radius:50%;object-fit:cover;background:var(--surface-2);
  border:1px solid var(--border);margin-bottom:36px}
.eyebrow{font-weight:600;font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--faint);margin-bottom:20px}
.rail h1{font-size:27px;line-height:1.18;margin-bottom:28px}
.rail h1 .hl{color:var(--accent)}
.rail p{font-size:14px;line-height:1.75;color:var(--text-2);margin-bottom:24px}
.rail p.sm{font-size:13px;color:var(--muted)}
.cta{display:flex;align-items:center;gap:14px;margin-top:40px;flex-wrap:wrap}
.icon-btn{width:46px;height:46px;display:grid;place-items:center;border:1px solid var(--border);
  border-radius:var(--radius);background:var(--surface);color:var(--text-2);
  font-weight:600;font-size:14px;transition:border-color .15s var(--ease),color .15s var(--ease)}
.icon-btn:hover{border-color:var(--accent);color:var(--accent)}
.rail-foot{margin-top:44px;padding-top:28px;border-top:1px solid var(--border-soft);
  font-size:12.5px;line-height:2.1;color:var(--muted)}
.rail-foot a:hover{color:var(--accent)}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:14px;
  padding:14px 26px;border-radius:var(--radius);background:var(--accent);color:#fff;
  border:1px solid var(--accent);cursor:pointer;transition:background .15s var(--ease),border-color .15s var(--ease)}
.btn:hover{background:var(--accent-hover);border-color:var(--accent-hover)}
.btn.ghost{background:transparent;color:var(--text);border-color:var(--border)}
.btn.ghost:hover{background:transparent;border-color:var(--accent);color:var(--accent)}

/* section label */
.section-label{display:flex;align-items:center;gap:14px;font-weight:600;font-size:11.5px;
  letter-spacing:.08em;text-transform:uppercase;color:var(--faint);margin-bottom:32px}
.section-label::after{content:"";flex:1;height:1px;background:var(--border)}

/* page footer */
.site-foot{max-width:var(--maxw);margin:0 auto;padding:40px clamp(28px,4vw,48px);
  border-top:1px solid var(--border-soft);display:flex;justify-content:space-between;
  flex-wrap:wrap;gap:16px;font-size:13px;color:var(--muted)}
.site-foot a:hover{color:var(--accent)}

/* ============ WORK CARDS ============ */
.work-list{display:flex;flex-direction:column;gap:28px}
.work-card{display:block;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:clamp(22px,3vw,34px);transition:border-color .15s var(--ease)}
.work-card:hover{border-color:var(--border-strong)}
.work-card:hover .wc-title{color:var(--accent-hover)}
.wc-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:14px}
.wc-title{font-size:20px;color:var(--accent);margin:0;transition:color .15s var(--ease)}
.wc-tag{font-size:11px;font-weight:600;color:var(--faint);white-space:nowrap;padding-top:6px}
.wc-desc{font-size:14px;line-height:1.7;color:var(--text-3);margin-bottom:28px;max-width:60ch}
.badge{display:inline-block;font-size:10.5px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;
  padding:4px 9px;border-radius:var(--radius-sm);background:var(--accent-wash);color:var(--accent);border:1px solid var(--border)}

/* screenshot slot (placeholder + real) */
.shot{border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;background:var(--surface-2)}
.shot.is-placeholder{aspect-ratio:16/9;display:grid;place-items:center;text-align:center;padding:20px;
  color:var(--muted);font-size:13px;line-height:1.7;
  background:repeating-linear-gradient(45deg,var(--surface-2),var(--surface-2) 12px,var(--surface) 12px,var(--surface) 24px)}

/* metrics */
.metrics{display:flex;flex-wrap:wrap;gap:clamp(24px,4vw,40px);margin-top:30px;padding-top:26px;border-top:1px solid var(--border-soft)}
.metric .n{font-family:var(--font-display);font-weight:700;font-size:21px;letter-spacing:-.02em;color:var(--accent)}
.metric .l{font-size:11px;color:var(--muted);font-weight:500;margin-top:6px}

/* ============ CASE STUDY ============ */
.cs-header{margin-bottom:40px}
.cs-header h1{font-size:clamp(30px,5vw,44px);margin-bottom:14px}
.cs-header .tagline{font-size:17px;color:var(--text-3);max-width:60ch}
.glance{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1px;
  background:var(--border);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;margin-bottom:48px}
.glance div{background:var(--surface);padding:18px 20px}
.glance dt{font-size:11px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--faint);margin-bottom:6px}
.glance dd{font-size:14px;color:var(--text-2);font-weight:500}
.glance dd.metric-hl{color:var(--accent);font-family:var(--font-display);font-weight:700}
.cs-section{margin-bottom:48px}
.cs-section h2{font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--faint);margin-bottom:18px}
.cs-section h3{font-size:16px;color:var(--text);margin-bottom:8px}
.cs-section p{font-size:16px;line-height:1.8;color:var(--text-2);margin-bottom:16px;max-width:68ch}
.cs-section ul{margin:0 0 16px 1.1em;color:var(--text-2);line-height:1.8;max-width:68ch}
.cs-section ul li{margin-bottom:8px}
.cs-section .pillar{margin-bottom:24px}
.cs-visuals{display:flex;flex-direction:column;gap:24px}
.figure figcaption{font-size:12.5px;color:var(--muted);margin-top:10px}
.cs-nav{display:flex;justify-content:space-between;gap:16px;margin-top:56px;padding-top:28px;border-top:1px solid var(--border-soft)}
.cs-nav a{font-weight:600;font-size:14px;color:var(--text-3)}
.cs-nav a:hover{color:var(--accent)}
.inprogress{border:1px dashed var(--border-strong);border-radius:var(--radius);background:var(--accent-wash);
  padding:18px 20px;font-size:14px;line-height:1.7;color:var(--text-3);margin-bottom:40px}
.inprogress a{color:var(--accent);font-weight:600}

/* ============ GALLERY ============ */
.gallery-head{margin-bottom:30px}
.gallery-head h1{font-size:27px;margin-bottom:12px}
.gallery-head p{font-size:14px;line-height:1.7;color:var(--text-3);max-width:60ch}
.filters{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px}
.chip{font-weight:600;font-size:12.5px;padding:9px 16px;border-radius:var(--radius);
  border:1px solid var(--border);background:var(--surface);color:var(--text-3);cursor:pointer;transition:.15s var(--ease)}
.chip:hover{border-color:var(--accent);color:var(--accent)}
.chip[aria-pressed="true"]{background:var(--accent);border-color:var(--accent);color:#fff}
.masonry{column-count:3;column-gap:18px}
.tile{break-inside:avoid;margin-bottom:18px;border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;background:var(--surface);cursor:pointer;width:100%;text-align:left;
  font-family:inherit;color:inherit;transition:border-color .15s var(--ease);padding:0}
.tile:hover{border-color:var(--accent)}
.tile img{width:100%;display:block}
.tile .tph{aspect-ratio:4/5;display:grid;place-items:center;color:var(--muted);font-size:12px;padding:14px;text-align:center;
  background:repeating-linear-gradient(45deg,var(--surface-2),var(--surface-2) 12px,var(--surface) 12px,var(--surface) 24px)}
.tile .cap{padding:13px 15px}
.tile .cap h4{font-size:13.5px;margin-bottom:3px}
.tile .cap span{font-size:11.5px;font-weight:500;color:var(--faint)}
.tile[hidden]{display:none}

/* lightbox */
.lightbox{position:fixed;inset:0;z-index:80;display:none;place-items:center;
  background:rgba(12,10,9,.86);padding:24px}
.lightbox.open{display:grid}
.lightbox img{max-width:min(92vw,1100px);max-height:82vh;border-radius:var(--radius)}
.lb-cap{position:absolute;bottom:20px;left:0;right:0;text-align:center;color:#f5f3f1;font-size:13px}
.lb-btn{position:absolute;top:50%;transform:translateY(-50%);width:48px;height:48px;display:grid;place-items:center;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);border-radius:var(--radius);
  color:#fff;font-size:20px;cursor:pointer}
.lb-prev{left:24px}.lb-next{right:24px}
.lb-close{position:absolute;top:24px;right:24px;width:44px;height:44px;display:grid;place-items:center;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);border-radius:var(--radius);color:#fff;font-size:18px;cursor:pointer}

/* ============ REVEAL ANIMATION ============ */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ============ RESPONSIVE ============ */
@media (max-width:900px){
  .shell{grid-template-columns:1fr}
  .rail{position:static;border-right:0;border-bottom:1px solid var(--border-soft)}
  .masonry{column-count:2}
}
@media (max-width:600px){
  .masonry{column-count:1}
  .nav{position:relative}
  .nav-links{display:none;position:absolute;top:calc(100% + 14px);right:0;left:auto;min-width:180px;
    flex-direction:column;align-items:stretch;gap:0;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;z-index:50}
  .nav-links.open{display:flex}
  .nav-links a{padding:13px 18px;border-bottom:1px solid var(--border-soft)}
  .nav-links a:last-child{border-bottom:0}
  .nav-toggle{display:grid;place-items:center}
}