/* ODA Interiors — demo (e.systems) · architectural editorial system */
:root{
  --ink:#17130E;--ink-2:#0E0B07;--ink-3:#070504;
  --paper:#FBF8F2;--bone:#F4EEE3;--sand:#EADFCD;--stone:#DCCFB9;
  --brass:#B0894E;--brass-l:#C9A86B;--brass-d:#8A6A39;
  --ink-soft:rgba(23,19,14,.72);--ink-faint:rgba(23,19,14,.46);--line:rgba(23,19,14,.13);
  --on-dark:#F3ECDD;--on-dark-soft:rgba(243,236,221,.60);--on-dark-line:rgba(243,236,221,.16);
  --d:'Fraunces',serif;--b:'Hanken Grotesk',system-ui,sans-serif;
  --e:cubic-bezier(.22,.61,.36,1);--e2:cubic-bezier(.65,0,.35,1);
  --nav-h:74px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--b);background:var(--bone);color:var(--ink);line-height:1.65;font-size:17px;-webkit-font-smoothing:antialiased;overflow-x:hidden}
h1,h2,h3,h4{font-family:var(--d);font-weight:400;line-height:1.06;letter-spacing:-.018em}
h1{font-size:clamp(2.6rem,6.4vw,5.4rem)}
h2{font-size:clamp(2rem,4.4vw,3.5rem)}
h3{font-size:clamp(1.3rem,2.2vw,1.85rem)}
p{color:var(--ink-soft)}
strong{color:var(--ink);font-weight:600}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{max-width:1240px;margin:0 auto;padding:0 clamp(20px,5vw,64px)}
.narrow{max-width:780px;margin:0 auto;padding:0 clamp(20px,5vw,64px)}
section{padding:clamp(64px,10vw,128px) 0;position:relative}
.section-paper{background:var(--paper)}
.section-bone{background:var(--bone)}
.section-sand{background:var(--sand)}
.section-dark{background:var(--ink-2);color:var(--on-dark)}
.section-dark p{color:var(--on-dark-soft)}
.ital{font-style:italic;color:var(--brass)}
.overline{font-size:.74rem;font-weight:700;letter-spacing:.26em;text-transform:uppercase;color:var(--brass);display:inline-flex;align-items:center;gap:.8em}
.overline::before{content:"";width:26px;height:1px;background:var(--brass);opacity:.7}
.overline.center::before{display:none}
.lead{font-size:clamp(1.08rem,1.55vw,1.34rem);color:var(--ink-soft);line-height:1.6}
.section-dark .lead{color:var(--on-dark-soft)}

/* grain + scroll progress */
.grain{position:fixed;inset:0;z-index:200;pointer-events:none;opacity:.035;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='.85'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
.progress{position:fixed;top:0;left:0;height:2px;background:linear-gradient(90deg,var(--brass),var(--brass-l));z-index:300;width:0}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:.6em;font-weight:600;font-size:.96rem;padding:1.02em 1.8em;border-radius:100px;transition:.4s var(--e);cursor:pointer;border:1px solid transparent;white-space:nowrap}
.btn-arrow{transition:transform .4s var(--e)}
.btn:hover .btn-arrow{transform:translateX(5px)}
.btn-primary{background:var(--brass);color:#241808}
.btn-primary:hover{background:var(--brass-l);transform:translateY(-2px);box-shadow:0 16px 34px -18px rgba(176,137,78,.8)}
.btn-ghost{border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--ink);transform:translateY(-2px)}
.btn-on-dark{border-color:var(--on-dark-line);color:var(--on-dark)}
.btn-on-dark:hover{border-color:var(--brass-l);color:var(--brass-l)}

/* nav */
.nav{position:fixed;top:0;left:0;right:0;height:var(--nav-h);z-index:120;display:flex;align-items:center;justify-content:space-between;padding:0 clamp(18px,5vw,56px);transition:background .5s var(--e),box-shadow .5s var(--e),height .4s var(--e);color:var(--on-dark)}
.nav.scrolled{background:rgba(10,8,5,.86);backdrop-filter:blur(14px);box-shadow:0 1px 0 var(--on-dark-line);height:64px}
.brand{display:flex;align-items:center;gap:.6em;color:inherit}
.brand .crow{width:30px;height:30px;color:var(--brass-l);flex-shrink:0}
.brand .wm{font-family:var(--d);font-size:1.5rem;letter-spacing:.12em;line-height:1}
.brand .wm sup{font-size:.5em;vertical-align:super;opacity:.7}
.brand .wm small{display:block;font-family:var(--b);font-size:.42rem;letter-spacing:.42em;font-weight:600;opacity:.7;margin-top:2px}
.nav-links{display:flex;gap:32px;font-size:.92rem;font-weight:500;letter-spacing:.01em}
.nav-links a{position:relative;color:inherit;opacity:.85;transition:.3s}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-6px;height:1px;width:0;background:var(--brass-l);transition:width .35s var(--e)}
.nav-links a:hover{opacity:1}.nav-links a:hover::after{width:100%}
.nav-right{display:flex;align-items:center;gap:18px}
.lang{display:flex;gap:2px;border:1px solid var(--on-dark-line);border-radius:100px;padding:3px}
.lang button{background:none;border:none;color:var(--on-dark-soft);font:inherit;font-size:.78rem;font-weight:600;padding:5px 11px;border-radius:100px;cursor:pointer;transition:.3s;letter-spacing:.05em}
.lang button.active{background:var(--brass);color:#241808}
.nav-cta{padding:.7em 1.3em;font-size:.86rem}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
.burger span{width:24px;height:2px;background:var(--on-dark);transition:.3s}
.mobile-menu{position:fixed;inset:0;z-index:115;background:var(--ink-2);display:flex;flex-direction:column;justify-content:center;align-items:center;gap:8px;transform:translateY(-100%);transition:transform .5s var(--e);padding:40px}
.mobile-menu.open{transform:none}
.mobile-menu a{font-family:var(--d);font-size:1.9rem;color:var(--on-dark);padding:10px}

/* reveal */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .9s var(--e),transform .9s var(--e)}
.reveal.in{opacity:1;transform:none}
.reveal[data-d="1"]{transition-delay:.08s}.reveal[data-d="2"]{transition-delay:.18s}
.reveal[data-d="3"]{transition-delay:.28s}.reveal[data-d="4"]{transition-delay:.38s}.reveal[data-d="5"]{transition-delay:.48s}

/* ===== HERO ===== */
.hero{min-height:100vh;background:var(--ink-2);color:var(--on-dark);display:flex;align-items:center;position:relative;overflow:hidden;padding-top:var(--nav-h)}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.34;filter:saturate(.85) contrast(1.05);transform:scale(1.08);animation:heroZoom 18s var(--e) forwards}
@keyframes heroZoom{to{transform:scale(1)}}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,var(--ink-3) 18%,rgba(7,5,4,.6) 52%,rgba(7,5,4,.25) 100%)}
.hero-ring{position:absolute;right:-12vw;top:50%;transform:translateY(-50%);width:62vw;max-width:840px;aspect-ratio:1;z-index:1;opacity:.5;pointer-events:none}
.hero .container{position:relative;z-index:2;width:100%}
.hero-eyebrow{color:var(--brass-l)}
.hero h1{color:var(--on-dark);max-width:16ch;margin:.34em 0 .5em}
.hero h1 .ln{display:block;overflow:hidden}
.hero h1 .ln span{display:block;transform:translateY(110%);animation:lineUp 1s var(--e) forwards}
.hero h1 .ln:nth-child(2) span{animation-delay:.12s}
.hero h1 .ln:nth-child(3) span{animation-delay:.24s}
@keyframes lineUp{to{transform:none}}
.hero-lead{max-width:44ch;color:var(--on-dark-soft)}
.hero-actions{display:flex;gap:14px;margin-top:2.2em;flex-wrap:wrap}
.hero-meta{display:flex;gap:clamp(24px,4vw,52px);margin-top:3.4em;flex-wrap:wrap}
.hero-meta .stat .n{font-family:var(--d);font-size:clamp(1.9rem,3vw,2.6rem);color:var(--brass-l);line-height:1}
.hero-meta .stat .l{font-size:.82rem;color:var(--on-dark-soft);margin-top:.5em;max-width:16ch}
.scroll-cue{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:2;font-size:.7rem;letter-spacing:.24em;text-transform:uppercase;color:var(--on-dark-soft);display:flex;flex-direction:column;align-items:center;gap:8px}
.scroll-cue::after{content:"";width:1px;height:38px;background:linear-gradient(var(--brass-l),transparent);animation:cue 2s var(--e) infinite}
@keyframes cue{0%{transform:scaleY(0);transform-origin:top}45%{transform:scaleY(1);transform-origin:top}55%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* marquee */
.marquee{background:var(--ink);color:var(--on-dark);padding:22px 0;overflow:hidden;white-space:nowrap;border-top:1px solid var(--on-dark-line);border-bottom:1px solid var(--on-dark-line)}
.marquee-track{display:inline-flex;gap:54px;animation:scroll 34s linear infinite;will-change:transform}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee span{font-family:var(--d);font-size:1.45rem;color:var(--on-dark-soft);display:inline-flex;align-items:center;gap:54px}
.marquee span::after{content:"✦";color:var(--brass);font-size:.7em}
@keyframes scroll{to{transform:translateX(-50%)}}

/* intro statement */
.statement h2{max-width:20ch}
.statement .big{font-size:clamp(1.5rem,3vw,2.4rem);font-family:var(--d);line-height:1.32;color:var(--ink);max-width:24ch}
.statement .big em{font-style:italic;color:var(--brass)}

/* expertise */
.xp-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin-top:54px}
.xp{background:var(--paper);padding:clamp(26px,3vw,40px);transition:.5s var(--e);position:relative}
.xp:hover{background:var(--ink-2);color:var(--on-dark)}
.xp:hover p{color:var(--on-dark-soft)}
.xp:hover .xp-n{color:var(--brass-l)}
.xp-n{font-family:var(--d);font-size:.95rem;color:var(--brass);letter-spacing:.1em}
.xp h3{margin:.7em 0 .35em;font-size:1.35rem}
.xp p{font-size:.92rem}

/* projects showcase */
.proj{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,72px);align-items:center;margin-top:clamp(54px,7vw,96px)}
.proj:first-of-type{margin-top:54px}
.proj.flip .proj-media{order:2}
.proj-media{position:relative;overflow:hidden;border-radius:4px;aspect-ratio:4/5}
.proj-media img{width:100%;height:100%;object-fit:cover;transition:transform 1.1s var(--e);transform:scale(1.02)}
.proj:hover .proj-media img{transform:scale(1.07)}
.proj-media .tagline{position:absolute;left:18px;bottom:16px;background:rgba(10,8,5,.7);backdrop-filter:blur(6px);color:var(--on-dark);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;padding:8px 14px;border-radius:100px}
.proj-cat{font-size:.76rem;letter-spacing:.2em;text-transform:uppercase;color:var(--brass);font-weight:700}
.proj h3{font-size:clamp(1.7rem,3vw,2.5rem);margin:.4em 0 .2em}
.proj .meta{display:flex;gap:20px;font-size:.84rem;color:var(--ink-faint);margin-bottom:1.1em;flex-wrap:wrap}
.proj .meta b{color:var(--ink);font-weight:600}
.proj p{font-size:.98rem}
.proj .plink{display:inline-flex;align-items:center;gap:.5em;margin-top:1.3em;font-weight:600;font-size:.9rem;color:var(--ink);border-bottom:1px solid var(--brass);padding-bottom:3px;transition:.3s}
.proj .plink:hover{gap:.9em;color:var(--brass)}

/* project index list */
.index-list{margin-top:46px;border-top:1px solid var(--on-dark-line)}
.index-row{display:grid;grid-template-columns:2.4fr 1.6fr .8fr auto;gap:18px;align-items:baseline;padding:24px 6px;border-bottom:1px solid var(--on-dark-line);transition:.4s var(--e)}
.index-row:hover{padding-left:20px;background:rgba(243,236,221,.03)}
.index-row .ix-name{font-family:var(--d);font-size:clamp(1.2rem,2vw,1.7rem);color:var(--on-dark)}
.index-row:hover .ix-name{color:var(--brass-l)}
.index-row .ix-cat{font-size:.86rem;color:var(--on-dark-soft)}
.index-row .ix-yr{font-size:.86rem;color:var(--on-dark-soft);text-align:right}
.index-row .ix-ar{color:var(--brass-l);opacity:0;transform:translateX(-8px);transition:.4s var(--e)}
.index-row:hover .ix-ar{opacity:1;transform:none}

/* corvus */
.corvus{background:radial-gradient(120% 90% at 80% 20%,#1b160e 0%,var(--ink-2) 55%);color:var(--on-dark);overflow:hidden}
.corvus-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(30px,5vw,70px);align-items:center}
.corvus-art{position:relative;aspect-ratio:1;display:grid;place-items:center}
.corvus-art .halo{position:absolute;width:90%;aspect-ratio:1;border-radius:50%;background:radial-gradient(circle,rgba(201,168,107,.22),transparent 62%)}
.corvus-art .ring2{position:absolute;width:100%;aspect-ratio:1;animation:spin 40s linear infinite}
.corvus-art .ring3{position:absolute;width:74%;aspect-ratio:1;animation:spin 28s linear infinite reverse}
.corvus-art img{position:relative;width:60%;border-radius:50%;animation:float 7s ease-in-out infinite;box-shadow:0 40px 80px -30px rgba(0,0,0,.7)}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes float{0%,100%{transform:translateY(-10px)}50%{transform:translateY(10px)}}
.badge-patent{display:inline-flex;align-items:center;gap:.5em;border:1px solid var(--brass);color:var(--brass-l);border-radius:100px;padding:6px 14px;font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;margin-bottom:1.2em}
.corvus h2{color:var(--on-dark)}
.corvus .feat4{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:1.6em}
.corvus .f4{border:1px solid var(--on-dark-line);border-radius:12px;padding:16px 18px}
.corvus .f4 .fn{font-family:var(--d);color:var(--brass-l);font-size:1.5rem;line-height:1}
.corvus .f4 .ft{font-size:.84rem;color:var(--on-dark-soft);margin-top:.3em}

/* sub-brands */
.brands-row{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;margin-top:48px;align-items:center}
.brandcard{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:26px 18px;text-align:center;transition:.45s var(--e)}
.brandcard:hover{transform:translateY(-6px);box-shadow:0 26px 50px -34px rgba(23,19,14,.45)}
.brandcard .bimg{height:54px;display:grid;place-items:center;margin-bottom:14px}
.brandcard .bimg img{max-height:48px;width:auto;object-fit:contain;filter:grayscale(1) contrast(.9);opacity:.8;transition:.4s}
.brandcard:hover .bimg img{filter:none;opacity:1}
.brandcard .bn{font-family:var(--d);font-size:1.1rem}
.brandcard .bd{font-size:.78rem;color:var(--ink-faint);margin-top:.2em}
.brandcard.oda .bimg{font-family:var(--d);font-size:1.7rem;letter-spacing:.1em;color:var(--ink)}

/* studio / team */
.studio-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(30px,5vw,68px);align-items:center}
.team-mosaic{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.team-mosaic img{width:100%;aspect-ratio:3/4;object-fit:cover;border-radius:3px;filter:grayscale(1) contrast(1.02);transition:.5s var(--e)}
.team-mosaic img:hover{filter:none}
.team-mosaic img:nth-child(1){grid-row:span 2;aspect-ratio:3/4;height:100%}
.founders{display:flex;gap:30px;margin-top:1.6em;flex-wrap:wrap}
.founder .fname{font-family:var(--d);font-size:1.2rem}
.founder .frole{font-size:.84rem;color:var(--brass);font-weight:600}
.pullq{font-family:var(--d);font-size:clamp(1.5rem,2.6vw,2.1rem);line-height:1.3;color:var(--ink);margin:.4em 0 .6em;font-style:italic}
.section-dark .pullq{color:var(--on-dark)}

/* stats band */
.band{background:var(--ink-2);color:var(--on-dark)}
.band-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.band .n{font-family:var(--d);font-size:clamp(2.2rem,4vw,3.4rem);color:var(--brass-l);line-height:1}
.band .l{font-size:.86rem;color:var(--on-dark-soft);margin-top:.6em}

/* contact / cta */
.cta-final{text-align:center}
.cta-final h2{max-width:18ch;margin:.3em auto .4em;color:var(--on-dark)}
.cta-final p{max-width:46ch;margin:0 auto 2em}
.contact-row{display:flex;gap:clamp(20px,4vw,48px);justify-content:center;flex-wrap:wrap;margin-top:2.6em;font-size:.92rem}
.contact-row a{color:var(--on-dark)}
.contact-row .lab{color:var(--on-dark-soft);font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;display:block;margin-bottom:.4em}
.contact-row .v:hover{color:var(--brass-l)}

/* footer */
.footer{background:var(--ink-3);color:var(--on-dark-soft);padding:64px 0 30px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:30px}
.footer .brand{color:var(--on-dark);margin-bottom:14px}
.footer p{font-size:.9rem;max-width:30ch}
.footer-col h5{font-family:var(--b);font-size:.74rem;letter-spacing:.18em;text-transform:uppercase;color:var(--on-dark);margin-bottom:14px}
.footer-col a{display:block;font-size:.9rem;color:var(--on-dark-soft);padding:5px 0;transition:.3s}
.footer-col a:hover{color:var(--brass-l)}
.footer-hr{border:none;border-top:1px solid var(--on-dark-line);margin:40px 0 22px}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:.8rem}
.footer-bottom .social{display:flex;gap:14px}
.footer-bottom .social a{width:34px;height:34px;border:1px solid var(--on-dark-line);border-radius:50%;display:grid;place-items:center;transition:.3s}
.footer-bottom .social a:hover{border-color:var(--brass-l);color:var(--brass-l)}
.footer-bottom .social svg{width:16px;height:16px}

/* demo ribbon */
.demo-ribbon{position:fixed;bottom:0;left:0;right:0;z-index:130;background:rgba(10,8,5,.9);backdrop-filter:blur(8px);color:var(--on-dark-soft);font-size:.76rem;text-align:center;padding:9px 16px;border-top:1px solid var(--brass)}
.demo-ribbon b{color:var(--brass-l);letter-spacing:.12em}

/* utility */
.center{text-align:center}
.mt-h{max-width:680px}
.mauto{margin-left:auto;margin-right:auto}

/* responsive */
@media(max-width:960px){
  .nav-links{display:none}
  .burger{display:flex}
  .xp-grid{grid-template-columns:1fr 1fr}
  .proj,.corvus-grid,.studio-grid{grid-template-columns:1fr}
  .proj.flip .proj-media{order:0}
  .proj-media{aspect-ratio:16/11}
  .brands-row{grid-template-columns:repeat(2,1fr)}
  .band-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .index-row{grid-template-columns:1.6fr 1fr auto;gap:12px}
  .index-row .ix-yr{display:none}
}
@media(max-width:560px){
  body{font-size:16px}
  .nav-right .lang{display:none}
  .xp-grid{grid-template-columns:1fr}
  .team-mosaic{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero-meta{gap:22px}
  .corvus .feat4{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important}
  .reveal{opacity:1;transform:none;transition:none}
  .hero h1 .ln span{transform:none}
  .hero-bg img{transform:none}
}