/* ============================================================
   STUDIO NAME — Architecture + BIM starter stylesheet
   Design system derived from RnD (COX/Seeper/T3 cleanliness,
   Advenser IA, FORREC motion, MaRS metadata cards)
   ============================================================ */

:root{
  --ink:#111417;
  --paper:#f7f6f2;
  --white:#ffffff;
  --grey-1:#5b6167;
  --grey-2:#9aa0a6;
  --line:#e4e1da;
  --accent:#c8862a;          /* architectural amber */
  --accent-dark:#a86d1d;
  --radius:10px;
  --shadow:0 12px 32px rgba(17,20,23,.10);
  --font-display:'Space Grotesk',sans-serif;
  --font-body:'Inter',sans-serif;
  --section-pad:clamp(72px,9vw,130px);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font-body);color:var(--ink);background:var(--paper);line-height:1.65;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{width:min(1240px,92%);margin-inline:auto}
.container.narrow{width:min(820px,92%)}
.center{text-align:center;margin-top:48px}

h1,h2,h3,h4{font-family:var(--font-display);line-height:1.12;font-weight:700;letter-spacing:-.01em}
h2{font-size:clamp(1.8rem,3.4vw,2.8rem)}
h3{font-size:1.15rem}

.section{padding-block:var(--section-pad)}
.section-head{max-width:640px;margin-bottom:56px}
.section-kicker{font-size:.8rem;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);margin-bottom:12px}
.section-sub{color:var(--grey-1);margin-top:14px}

/* ---------- Buttons ---------- */
.btn{display:inline-block;padding:14px 30px;border-radius:999px;font-weight:600;font-size:.95rem;border:2px solid transparent;cursor:pointer;transition:transform .25s ease,background .25s ease,color .25s ease,border-color .25s ease}
.btn:hover{transform:translateY(-2px)}
.btn-accent{background:var(--accent);color:var(--white)}
.btn-accent:hover{background:var(--accent-dark)}
.btn-ghost{border-color:rgba(255,255,255,.6);color:var(--white)}
.btn-ghost:hover{background:var(--white);color:var(--ink)}
.btn-dark{background:var(--ink);color:var(--white)}
.btn-dark:hover{background:#2a2f34}
.btn.full{width:100%}

/* ============================================================
   HEADER (sticky, shrinks on scroll)
   ============================================================ */
.site-header{position:fixed;inset-inline:0;top:0;z-index:100;background:rgba(247,246,242,0);transition:background .35s ease,box-shadow .35s ease}
.site-header.scrolled{background:rgba(247,246,242,.96);box-shadow:0 1px 0 var(--line);backdrop-filter:blur(10px)}
.header-inner{display:flex;align-items:center;gap:36px;padding-block:20px;transition:padding .3s ease}
.site-header.scrolled .header-inner{padding-block:12px}

.logo{font-family:var(--font-display);font-weight:700;font-size:1.25rem;letter-spacing:.04em;color:var(--white);transition:color .3s}
.logo span{color:var(--accent)}
.site-header.scrolled .logo{color:var(--ink)}

.main-nav{margin-left:auto}
.main-nav>ul{display:flex;gap:30px}
.main-nav a{font-weight:500;font-size:.95rem;color:var(--white);transition:color .3s}
.site-header.scrolled .main-nav a{color:var(--ink)}
.main-nav a:hover{color:var(--accent)}
.caret{font-size:.7em;opacity:.7}

/* Mega menu (Advenser discipline columns) */
.has-mega{position:relative}
.mega-menu{position:absolute;top:calc(100% + 16px);left:50%;transform:translate(-50%,8px);display:grid;grid-template-columns:repeat(4,190px);gap:26px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px;opacity:0;visibility:hidden;transition:opacity .25s ease,transform .25s ease}
.has-mega:hover .mega-menu,.has-mega:focus-within .mega-menu{opacity:1;visibility:visible;transform:translate(-50%,0)}
.mega-col h4{font-size:.85rem;color:var(--accent);margin-bottom:12px}
.mega-col a{display:block;font-size:.86rem;color:var(--grey-1)!important;padding-block:5px}
.mega-col a:hover{color:var(--ink)!important;padding-left:4px;transition:padding .2s}

.header-cta{margin-left:6px}

/* Hamburger */
.nav-toggle{display:none;background:none;border:0;width:42px;height:42px;flex-direction:column;justify-content:center;gap:6px;cursor:pointer;z-index:120}
.nav-toggle span{display:block;height:2px;width:26px;background:var(--white);margin-inline:auto;transition:transform .3s,opacity .3s,background .3s}
.site-header.scrolled .nav-toggle span{background:var(--ink)}
body.menu-open .nav-toggle span{background:var(--white)}
body.menu-open .nav-toggle span:nth-child(1){transform:translateY(8px) rotate(45deg)}
body.menu-open .nav-toggle span:nth-child(2){opacity:0}
body.menu-open .nav-toggle span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}

/* Mobile overlay */
.mobile-menu{position:fixed;inset:0;background:var(--ink);z-index:110;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:opacity .35s ease}
body.menu-open .mobile-menu{opacity:1;visibility:visible}
.mobile-menu nav{display:flex;flex-direction:column;gap:26px;text-align:center}
.mobile-menu a{font-family:var(--font-display);font-size:1.8rem;font-weight:700;color:var(--white)}
.mobile-menu a.accent{color:var(--accent)}

/* ============================================================
   1. HERO
   ============================================================ */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;color:var(--white);overflow:hidden}
.hero-bg{position:absolute;inset:0;background:
  linear-gradient(160deg,rgba(12,14,16,.82) 0%,rgba(12,14,16,.45) 60%,rgba(200,134,42,.28) 100%),
  repeating-linear-gradient(90deg,rgba(255,255,255,.045) 0 1px,transparent 1px 90px),
  repeating-linear-gradient(0deg,rgba(255,255,255,.045) 0 1px,transparent 1px 90px),
  #1a1d21;}
/* ↑ blueprint-grid placeholder — replace with:
   background:url('images/hero.jpg') center/cover; plus a dark overlay */
.hero-content{position:relative;z-index:2;padding-top:80px}
.hero-kicker{font-size:.85rem;letter-spacing:.22em;text-transform:uppercase;color:var(--accent);margin-bottom:22px;font-weight:600}
.hero-title{font-size:clamp(2.8rem,7.5vw,5.6rem);margin-bottom:26px}
.hero-title a{position:relative;color:var(--white)}
.hero-title a::after{content:"";position:absolute;left:0;bottom:6px;height:4px;width:0;background:var(--accent);transition:width .4s ease}
.hero-title a:hover::after{width:100%}
.hero-sub{max-width:560px;font-size:1.08rem;color:rgba(255,255,255,.82);margin-bottom:36px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.scroll-hint{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);color:var(--white);font-size:1.4rem;opacity:.7;animation:bob 2s infinite ease-in-out}
@keyframes bob{0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,10px)}}

/* ============================================================
   2. MISSION
   ============================================================ */
.mission{background:var(--paper)}
.mission-line{font-size:clamp(1.5rem,3vw,2.4rem);font-weight:500;max-width:900px}
.mission-line em{font-style:normal;color:var(--accent)}

/* ============================================================
   3. SERVICES
   ============================================================ */
.services{background:var(--white)}
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.service-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:34px 30px;transition:transform .35s ease,box-shadow .35s ease}
.service-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.service-icon{font-size:1.9rem;color:var(--accent);margin-bottom:16px}
.service-card h3{margin-bottom:14px}
.service-card ul{margin-bottom:18px}
.service-card li{font-size:.92rem;color:var(--grey-1);padding-block:4px;border-bottom:1px dashed var(--line)}
.service-card li:last-child{border-bottom:0}
.link-more{font-weight:600;font-size:.9rem;color:var(--accent)}
.link-more:hover{color:var(--accent-dark)}

/* ============================================================
   4. STATS
   ============================================================ */
.stats{background:var(--ink);color:var(--white);padding-block:70px}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;text-align:center}
.stat-num,.stat-plus{font-family:var(--font-display);font-size:clamp(2.4rem,5vw,3.6rem);font-weight:700;color:var(--accent)}
.stat p{color:rgba(255,255,255,.75);font-size:.95rem;margin-top:4px}

/* ============================================================
   5. PROJECTS
   ============================================================ */
.projects{background:var(--paper)}
.filter-bar{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.chip{padding:10px 22px;border-radius:999px;border:1px solid var(--line);background:var(--white);font-weight:500;font-size:.9rem;cursor:pointer;transition:all .25s ease}
.chip:hover{border-color:var(--accent);color:var(--accent)}
.chip.active{background:var(--ink);color:var(--white);border-color:var(--ink)}
.filter-desc{font-size:.92rem;color:var(--grey-1);margin-bottom:36px;min-height:1.4em}

.projects-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.project-card{background:var(--white);border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);transition:transform .35s ease,box-shadow .35s ease,opacity .3s ease}
.project-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.project-card.hidden{display:none}
.project-img{position:relative;aspect-ratio:4/3;overflow:hidden;background:#c9c4ba;transition:filter .4s}
/* Placeholder art — swap each .img-N for a real photo:
   .img-1{background:url('images/project1.jpg') center/cover} */
.img-1{background:linear-gradient(135deg,#8c9f8b,#4a5d4a)}
.img-2{background:linear-gradient(135deg,#5b7ba6,#1e3a5f)}
.img-3{background:linear-gradient(135deg,#c9a25f,#8a6a2e)}
.img-4{background:linear-gradient(135deg,#9a8f9e,#544a5c)}
.img-5{background:linear-gradient(135deg,#7fa6a1,#39615c)}
.img-6{background:linear-gradient(135deg,#b98a72,#7a4c37)}
.project-card:hover .project-img{filter:brightness(1.07)}
.tag{position:absolute;top:14px;left:14px;background:rgba(17,20,23,.82);color:var(--white);font-size:.72rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;padding:6px 12px;border-radius:999px}
.project-meta{padding:20px 22px 24px}
.project-meta h3{margin-bottom:4px}
.loc{font-size:.88rem;color:var(--grey-1)}
.dots{font-size:.8rem;color:var(--accent);margin-top:8px;font-weight:500}

/* ============================================================
   6. CASE STUDY SPOTLIGHT
   ============================================================ */
.case-spotlight{background:var(--white)}
.case-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.case-media{aspect-ratio:4/3.4;border-radius:var(--radius);background:
  linear-gradient(150deg,rgba(30,42,56,.9),rgba(30,42,56,.5)),
  repeating-linear-gradient(45deg,rgba(200,134,42,.25) 0 2px,transparent 2px 26px),#22303e}
/* replace with real case-study image */
.case-body h2{margin-bottom:18px}
.case-body>p{color:var(--grey-1);margin-bottom:26px}
.case-facts{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-bottom:30px}
.case-facts div{border-left:3px solid var(--accent);padding-left:14px}
.case-facts dt{font-size:.75rem;text-transform:uppercase;letter-spacing:.12em;color:var(--grey-2)}
.case-facts dd{font-family:var(--font-display);font-weight:700;font-size:1.15rem}

/* ============================================================
   7. PROCESS
   ============================================================ */
.process{background:var(--paper)}
.process-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;list-style:none}
.process-steps li{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;position:relative;transition:transform .35s ease}
.process-steps li:hover{transform:translateY(-6px)}
.process-steps span{font-family:var(--font-display);font-size:2rem;font-weight:700;color:var(--accent);opacity:.9}
.process-steps h3{margin-block:10px 8px}
.process-steps p{font-size:.92rem;color:var(--grey-1)}

/* ============================================================
   8. SECTORS
   ============================================================ */
.sectors{background:var(--white)}
.sector-tiles{display:flex;flex-wrap:wrap;gap:14px}
.sector-tiles span{padding:14px 26px;border:1px solid var(--line);border-radius:999px;font-weight:500;font-size:.95rem;transition:all .25s ease;cursor:default}
.sector-tiles span:hover{background:var(--ink);color:var(--white);border-color:var(--ink);transform:translateY(-3px)}

/* ============================================================
   9. INSIGHTS
   ============================================================ */
.insights{background:var(--paper)}
.insights-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.insight-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:30px 28px;display:flex;flex-direction:column;gap:14px;transition:transform .35s ease,box-shadow .35s ease}
.insight-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.insight-cat{font-size:.78rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--accent)}
.insight-card h3{font-size:1.12rem;line-height:1.35}
.insight-date{margin-top:auto;font-size:.85rem;color:var(--grey-2)}

/* ============================================================
   10. TESTIMONIALS
   ============================================================ */
.testimonials{background:var(--white)}
.quote-slider{max-width:760px}
.quote{display:none;animation:fadeIn .5s ease}
.quote.active{display:block}
.quote p{font-family:var(--font-display);font-size:clamp(1.2rem,2.2vw,1.6rem);font-weight:500;line-height:1.45;margin-bottom:18px}
.quote cite{font-style:normal;color:var(--grey-1);font-size:.95rem}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.quote-nav{display:flex;gap:10px;margin-top:28px}
.qdot{width:12px;height:12px;border-radius:50%;border:0;background:var(--line);cursor:pointer;transition:background .25s,transform .25s}
.qdot.active{background:var(--accent);transform:scale(1.2)}

/* ============================================================
   11. FAQ
   ============================================================ */
.faq{background:var(--paper)}
.faq details{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:22px 26px;margin-bottom:14px}
.faq summary{font-family:var(--font-display);font-weight:600;font-size:1.05rem;cursor:pointer;list-style:none;position:relative;padding-right:32px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:0;top:0;font-size:1.3rem;color:var(--accent);transition:transform .25s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{margin-top:14px;color:var(--grey-1);font-size:.95rem}

/* ============================================================
   12. CTA + CONTACT
   ============================================================ */
.cta-band{background:var(--ink);color:var(--white);padding-block:var(--section-pad)}
.cta-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:70px;align-items:start}
.cta-band h2{font-size:clamp(2rem,4vw,3.2rem);margin-bottom:18px}
.cta-band p{color:rgba(255,255,255,.78)}
.cta-contacts{margin-top:28px;font-size:1.1rem;line-height:2}
.cta-contacts a{color:var(--accent);font-weight:600}
.cta-contacts a:hover{color:var(--white)}

.contact-form{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);padding:34px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.contact-form label{display:block;font-size:.82rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:rgba(255,255,255,.65);margin-bottom:18px}
.contact-form input,.contact-form select,.contact-form textarea{width:100%;margin-top:8px;padding:13px 15px;border-radius:8px;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.07);color:var(--white);font-family:var(--font-body);font-size:.95rem;transition:border-color .25s}
.contact-form select option{color:var(--ink)}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{outline:none;border-color:var(--accent)}
.contact-form ::placeholder{color:rgba(255,255,255,.4)}
.form-note{margin-top:14px;font-size:.9rem;color:var(--accent)}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer{background:#0c0e10;color:rgba(255,255,255,.72);padding-top:70px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:50px}
.footer-logo{color:var(--white);font-size:1.3rem}
.footer-tag{margin-top:14px;font-size:.92rem}
.site-footer h4{color:var(--white);font-size:.85rem;letter-spacing:.14em;text-transform:uppercase;margin-bottom:16px}
.site-footer nav a{display:block;padding-block:5px;font-size:.92rem;transition:color .2s,padding-left .2s}
.site-footer nav a:hover{color:var(--accent);padding-left:4px}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;border-top:1px solid rgba(255,255,255,.1);padding-block:22px;font-size:.85rem;flex-wrap:wrap;gap:10px}
.socials a:hover{color:var(--accent)}

/* ============================================================
   SCROLL REVEAL (FORREC-style)
   ============================================================ */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .6s ease,transform .6s ease}
.reveal.visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .scroll-hint{animation:none}
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width:1024px){
  .services-grid,.projects-grid,.insights-grid{grid-template-columns:repeat(2,1fr)}
  .process-steps{grid-template-columns:repeat(2,1fr)}
  .mega-menu{grid-template-columns:repeat(2,180px)}
  .cta-grid{grid-template-columns:1fr;gap:50px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:720px){
  .main-nav,.header-cta{display:none}
  .nav-toggle{display:flex}
  .services-grid,.projects-grid,.insights-grid,.process-steps,.stats-grid{grid-template-columns:1fr}
  .stats-grid{gap:36px}
  .case-grid{grid-template-columns:1fr;gap:36px}
  .form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero-title{font-size:clamp(2.4rem,12vw,3.4rem)}
}