/* ============================================================
   DURVA ENTERPRISES : Design System
   Swiss-inspired editorial system for an architectural execution firm.
   Type: Archivo (display) + Inter (body)
   Signature: hairline rule + solid dot marker, rotated section labels
   : both lifted directly from Durva's own portfolio deck language.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Archivo:wght@500;600;700;800&family=Inter:wght@400;500;600&display=swap');

:root{
  --ink:        #15213B;   /* primary, matches logo navy */
  --ink-soft:   #3B4560;
  --paper:      #FAF9F6;   /* warm off-white ground */
  --stone:      #E7E2D8;   /* hairline / card fill */
  --stone-line: #D8D2C4;
  --bronze:     #96754F;   /* matches logo bronze */
  --bronze-soft:#B79A78;
  --steel:      #6B7280;
  --white:      #FFFFFF;

  --display: 'Archivo', sans-serif;
  --body: 'Inter', sans-serif;

  --container: 1240px;
  --edge: clamp(24px, 5vw, 72px);
}

*{box-sizing:border-box; margin:0; padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family: var(--body);
  color: var(--ink);
  background: var(--paper);
  font-size: 16px;
  line-height:1.6;
  -webkit-font-smoothing: antialiased;
}
img{max-width:100%; display:block;}
a{color:inherit; text-decoration:none;}
ul{list-style:none;}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:0.01ms !important; transition-duration:0.01ms !important;}
}

/* ---------- Layout helpers ---------- */
.wrap{max-width:var(--container); margin:0 auto; padding:0 var(--edge);}
.hairline{border:none; border-top:1px solid var(--stone-line); margin:0;}
.vhairline{width:1px; background:var(--stone-line); align-self:stretch;}

.eyebrow{
  font-family:var(--body);
  font-size:12px;
  font-weight:600;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--bronze);
}

h1,h2,h3,h4{
  font-family:var(--display);
  font-weight:700;
  color:var(--ink);
  line-height:1.05;
  letter-spacing:-0.01em;
}

.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--body);
  font-weight:600;
  font-size:14px;
  letter-spacing:.02em;
  padding:15px 28px;
  border:1px solid var(--ink);
  color:var(--ink);
  background:transparent;
  transition: background .25s ease, color .25s ease, border-color .25s ease;
  white-space:nowrap;
}
.btn:hover{background:var(--ink); color:var(--paper);}
.btn.primary{background:var(--ink); color:var(--paper);}
.btn.primary:hover{background:var(--bronze); border-color:var(--bronze); color:var(--white);}
.btn svg{width:14px; height:14px; transition:transform .25s ease;}
.btn:hover svg{transform:translateX(3px);}

/* signature dot marker used at section joins, echoes the portfolio deck */
.marker-line{
  position:relative;
  height:1px;
  background:var(--stone-line);
}
.marker-line::before{
  content:'';
  position:absolute;
  left:var(--edge);
  top:50%;
  transform:translateY(-50%);
  width:9px; height:9px;
  border-radius:50%;
  background:var(--ink);
}

/* rotated section label, matching the deck's vertical "ABOUT / AGENDA" type */
.rail-label{
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-family:var(--display);
  font-weight:700;
  font-size:clamp(28px, 4vw, 42px);
  letter-spacing:-0.01em;
  color:var(--ink);
  text-transform:uppercase;
  white-space:nowrap;
}

/* ---------- Nav ---------- */
header.site-header{
  position:sticky; top:0; z-index:50;
  background:rgba(250,249,246,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--stone-line);
}
.nav{
  display:flex; align-items:center; justify-content:space-between;
  padding:18px var(--edge);
  max-width:var(--container); margin:0 auto;
}
.nav .logo img{height:46px; width:auto;}
.nav-links{display:flex; align-items:center; gap:40px;}
.nav-links a{
  font-size:13px; font-weight:600; letter-spacing:.06em; text-transform:uppercase;
  color:var(--ink-soft);
  position:relative;
  padding-bottom:4px;
}
.nav-links a::after{
  content:''; position:absolute; left:0; bottom:0; height:1px; width:0;
  background:var(--bronze); transition:width .25s ease;
}
.nav-links a:hover::after{width:100%;}
.nav-links a:hover{color:var(--ink);}
.nav .btn{padding:11px 22px; font-size:12px;}
.nav-toggle{display:none;}

@media (max-width:860px){
  .nav-links{
    position:fixed; inset:66px 0 0 0; background:var(--paper);
    flex-direction:column; justify-content:flex-start; align-items:flex-start;
    padding:32px var(--edge); gap:26px; border-top:1px solid var(--stone-line);
    transform:translateY(-8px); opacity:0; pointer-events:none; transition:all .25s ease;
  }
  .nav-links.open{transform:translateY(0); opacity:1; pointer-events:auto;}
  .nav-links a{font-size:16px;}
  .nav-toggle{
    display:flex; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:6px;
  }
  .nav-toggle span{width:22px; height:1.5px; background:var(--ink);}
}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  min-height:88vh;
  display:flex; align-items:flex-end;
  overflow:hidden;
  background:var(--ink);
}
.hero-media{position:absolute; inset:0;}
.hero-media img{width:100%; height:100%; object-fit:cover; opacity:.55;}
.hero-media::after{
  content:'';
  position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(21,33,59,.55) 0%, rgba(21,33,59,.35) 40%, rgba(21,33,59,.92) 100%);
}
.hero-inner{
  position:relative; z-index:2;
  width:100%;
  padding:0 var(--edge) 64px;
  max-width:var(--container); margin:0 auto;
}
.hero-eyebrow{
  color:var(--bronze-soft); font-size:13px; font-weight:600; letter-spacing:.18em; text-transform:uppercase;
  display:flex; align-items:center; gap:12px; margin-bottom:22px;
}
.hero-eyebrow .dash{width:36px; height:1px; background:var(--bronze-soft);}
.hero h1{
  color:var(--white);
  font-size:clamp(40px, 6.4vw, 92px);
  max-width:16ch;
  font-weight:700;
}
.hero p.lede{
  color:#D9DBE4;
  font-size:clamp(16px, 1.6vw, 19px);
  max-width:46ch;
  margin-top:24px;
  font-weight:400;
}
.hero-actions{display:flex; gap:16px; margin-top:40px; flex-wrap:wrap;}
.hero .btn{border-color:rgba(255,255,255,.35); color:var(--white);}
.hero .btn:hover{background:var(--white); color:var(--ink);}
.hero .btn.primary{background:var(--bronze); border-color:var(--bronze); color:var(--white);}
.hero .btn.primary:hover{background:var(--white); color:var(--ink);}

.hero-stats{
  display:flex; gap:0; margin-top:56px; border-top:1px solid rgba(255,255,255,.18); padding-top:26px; flex-wrap:wrap;
}
.hero-stats .stat{padding-right:48px; margin-right:48px; border-right:1px solid rgba(255,255,255,.18);}
.hero-stats .stat:last-child{border-right:none; margin-right:0; padding-right:0;}
.hero-stats .num{font-family:var(--display); font-size:clamp(24px,3vw,34px); color:var(--white); font-weight:700;}
.hero-stats .label{font-size:12px; color:#B9BCC9; letter-spacing:.05em; text-transform:uppercase; margin-top:4px;}

/* ---------- Section scaffolding ---------- */
section{padding:112px 0;}
@media (max-width:760px){ section{padding:72px 0;} }

.section-head{
  display:grid; grid-template-columns: 1fr 1fr; gap:48px; align-items:end;
  margin-bottom:64px;
}
.section-head h2{font-size:clamp(30px, 3.6vw, 48px);}
.section-head .desc{color:var(--steel); font-size:15.5px; max-width:44ch;}
@media (max-width:760px){ .section-head{grid-template-columns:1fr;} }

/* ---------- About ---------- */
.about{display:grid; grid-template-columns: 88px 1fr 1fr; gap:0; align-items:stretch;}
.about .rail{display:flex; align-items:flex-start; justify-content:center; padding-top:8px;}
.about .copy{padding-right:48px;}
.about .copy p{color:var(--ink-soft); font-size:16px; margin-bottom:20px; max-width:52ch;}
.about .figure{position:relative;}
.about .figure img{width:100%; height:100%; object-fit:cover; aspect-ratio: 4/5;}
.about .figure .cap{
  position:absolute; left:0; right:0; bottom:0;
  background:var(--ink); color:var(--paper);
  font-size:12px; letter-spacing:.05em; padding:14px 18px;
}
@media (max-width:860px){
  .about{grid-template-columns:1fr;}
  .about .rail{display:none;}
  .about .copy{padding-right:0; margin-bottom:36px;}
}

.stat-row{display:grid; grid-template-columns:repeat(3,1fr); margin-top:56px;}
.stat-row .cell{padding:28px var(--edge) 0 0; border-top:1px solid var(--stone-line);}
.stat-row .cell:first-child{padding-left:0;}
.stat-row .num{font-family:var(--display); font-size:clamp(26px,3vw,36px); font-weight:700;}
.stat-row .label{color:var(--steel); font-size:13.5px; margin-top:8px;}
@media (max-width:760px){ .stat-row{grid-template-columns:1fr; gap:24px;} .stat-row .cell{padding-left:0;} }

/* ---------- Services ---------- */
.services-list{border-top:1px solid var(--stone-line);}
.service-row{
  display:grid; grid-template-columns: 90px 1.3fr 1fr; gap:32px;
  padding:40px 0;
  border-bottom:1px solid var(--stone-line);
  align-items:start;
  transition:background .25s ease;
}
.service-row:hover{background:rgba(150,117,79,.045);}
.service-row .idx{font-family:var(--display); font-size:14px; color:var(--bronze); font-weight:700; padding-top:6px;}
.service-row h3{font-size:clamp(20px,2.2vw,26px); margin-bottom:10px;}
.service-row .items{color:var(--steel); font-size:14.5px; line-height:1.9;}
.service-row .items span{display:inline-block; margin-right:6px;}
.service-row .items span:not(:last-child)::after{content:'/'; margin-left:10px; color:var(--stone-line);}
@media (max-width:760px){
  .service-row{grid-template-columns:1fr; gap:10px;}
}

/* ---------- Industries ---------- */
.industry-grid{
  display:grid; grid-template-columns:repeat(3,1fr);
  border-top:1px solid var(--stone-line); border-left:1px solid var(--stone-line);
}
.industry-cell{
  border-right:1px solid var(--stone-line); border-bottom:1px solid var(--stone-line);
  padding:36px 32px; min-height:190px;
  display:flex; flex-direction:column; justify-content:space-between;
}
.industry-cell .n{font-family:var(--display); font-size:12px; color:var(--steel);}
.industry-cell h4{font-size:19px; margin-top:26px;}
.industry-cell p{color:var(--steel); font-size:14px; margin-top:8px;}
@media (max-width:860px){ .industry-grid{grid-template-columns:repeat(2,1fr);} }
@media (max-width:560px){ .industry-grid{grid-template-columns:1fr;} }

/* ---------- Why / commitment ---------- */
.why-wrap{display:grid; grid-template-columns:1fr 1fr; gap:64px;}
.why-media{position:relative; aspect-ratio:4/5; overflow:hidden;}
.why-media img{width:100%; height:100%; object-fit:cover;}
.why-list .item{padding:26px 0; border-top:1px solid var(--stone-line); display:flex; gap:22px;}
.why-list .item:last-child{border-bottom:1px solid var(--stone-line);}
.why-list .item .mark{font-family:var(--display); color:var(--bronze); font-weight:700; font-size:14px; padding-top:2px;}
.why-list h4{font-size:17px; margin-bottom:6px;}
.why-list p{color:var(--steel); font-size:14.5px;}
@media (max-width:860px){ .why-wrap{grid-template-columns:1fr;} .why-media{order:2;} }

/* ---------- Process ---------- */
.process-strip{
  display:grid; grid-template-columns:repeat(6,1fr);
  border-top:1px solid var(--stone-line);
}
.process-cell{
  padding:32px 20px 0 0;
  border-left:1px solid var(--stone-line);
  padding-left:20px;
}
.process-cell .n{font-family:var(--display); font-size:13px; color:var(--bronze); font-weight:700;}
.process-cell h4{font-size:15px; margin-top:16px; line-height:1.3;}
.process-cell p{font-size:13px; color:var(--steel); margin-top:8px; line-height:1.6;}
@media (max-width:1000px){ .process-strip{grid-template-columns:repeat(3,1fr); row-gap:36px;} }
@media (max-width:600px){ .process-strip{grid-template-columns:repeat(2,1fr);} }

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--ink); color:var(--paper);
  padding:96px 0;
}
.cta-inner{display:flex; justify-content:space-between; align-items:flex-end; gap:40px; flex-wrap:wrap;}
.cta-band h2{color:var(--white); font-size:clamp(28px,4vw,46px); max-width:16ch;}
.cta-band p{color:#B9BCC9; margin-top:14px; max-width:40ch;}
.cta-band .btn{border-color:rgba(255,255,255,.3); color:var(--white);}
.cta-band .btn.primary{background:var(--bronze); border-color:var(--bronze);}
.cta-band .btn.primary:hover{background:var(--white); color:var(--ink);}

/* ---------- Footer ---------- */
footer{background:var(--ink); color:#AEB2C1; padding:64px 0 32px;}
.footer-grid{display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px; padding-bottom:48px;}
.footer-grid .logo img{height:40px; margin-bottom:18px;}
.footer-grid p{font-size:13.5px; color:#8D91A3; max-width:32ch; line-height:1.7;}
.footer-col h5{font-size:12px; letter-spacing:.1em; text-transform:uppercase; color:#7B7F90; margin-bottom:18px;}
.footer-col a, .footer-col span{display:block; font-size:14px; color:#C9CBD6; margin-bottom:12px;}
.footer-col a:hover{color:var(--white);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1); padding-top:24px;
  display:flex; justify-content:space-between; font-size:12.5px; color:#767A8B; flex-wrap:wrap; gap:10px;
}
@media (max-width:860px){ .footer-grid{grid-template-columns:1fr 1fr; row-gap:32px;} }
@media (max-width:560px){ .footer-grid{grid-template-columns:1fr;} }

/* ---------- Reveal on scroll ---------- */
.reveal{opacity:0; transform:translateY(16px); transition:opacity .7s ease, transform .7s ease;}
.reveal.in{opacity:1; transform:translateY(0);}

/* ---------- Contact page specific ---------- */
.contact-hero{
  padding:170px 0 64px;
  background:var(--ink); color:var(--white);
}
.contact-hero .eyebrow{color:var(--bronze-soft);}
.contact-hero h1{color:var(--white); font-size:clamp(36px,5vw,64px); margin-top:16px; max-width:14ch;}
.contact-hero p{color:#C7C9D4; margin-top:18px; max-width:46ch; font-size:16px;}

.contact-grid{display:grid; grid-template-columns:1fr 1.2fr; gap:72px;}
@media (max-width:900px){ .contact-grid{grid-template-columns:1fr;} }

.contact-info .row{padding:24px 0; border-top:1px solid var(--stone-line);}
.contact-info .row:last-child{border-bottom:1px solid var(--stone-line);}
.contact-info .row .k{font-size:12px; letter-spacing:.08em; text-transform:uppercase; color:var(--steel); margin-bottom:8px;}
.contact-info .row .v{font-family:var(--display); font-size:19px; font-weight:600;}
.contact-info .row a.v:hover{color:var(--bronze);}

form.contact-form{display:flex; flex-direction:column; gap:26px;}
.field{display:flex; flex-direction:column; gap:8px;}
.field label{font-size:12px; letter-spacing:.06em; text-transform:uppercase; color:var(--steel);}
.field input, .field select, .field textarea{
  font-family:var(--body); font-size:16px; color:var(--ink);
  border:none; border-bottom:1px solid var(--stone-line);
  background:transparent; padding:10px 2px;
  transition:border-color .2s ease;
}
.field input:focus, .field select:focus, .field textarea:focus{
  outline:none; border-color:var(--ink);
}
.field textarea{resize:vertical; min-height:110px;}
.two-col{display:grid; grid-template-columns:1fr 1fr; gap:26px;}
@media (max-width:560px){ .two-col{grid-template-columns:1fr;} }
form.contact-form .btn{align-self:flex-start; margin-top:8px;}
.form-note{font-size:13px; color:var(--steel); margin-top:4px;}

.map-strip{aspect-ratio: 21/7; overflow:hidden; margin-top:96px;}
.map-strip iframe{width:100%; height:100%; border:0; filter:grayscale(45%) contrast(1.05);}

a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
  outline:2px solid var(--bronze); outline-offset:3px;
}