/* ==========================================================================
   DELARCAD ASSOCIATE LIMITED — Design System
   Concept: an architecture practice's drafting table — blueprint linework,
   editorial serif headlines, brass instrument accents. Quiet everywhere
   except the hero.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root{
  --ink:        #16233A;   /* blueprint navy — headings, nav, footer */
  --ink-2:      #223350;   /* lighter navy for panels */
  --paper:      #F6F4EF;   /* page background */
  --paper-2:    #EFECE3;   /* recessed panel background */
  --graphite:   #2A2A26;   /* body text */
  --steel:      #6E7268;   /* muted / secondary text */
  --line:       #D6D2C4;   /* hairline rule on paper */
  --line-dark:  rgba(246,244,239,0.22); /* hairline rule on navy */
  --brass:      #A9812C;   /* accent — links, CTAs, marks */
  --brass-dark: #8A6A22;
  --white:      #FFFFFF;

  --serif:  'Fraunces', Georgia, serif;
  --sans:   'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono:   'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;

  --max: 1180px;
  --gutter: clamp(20px, 5vw, 64px);

  color-scheme: light;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *{ animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

body{
  margin:0;
  font-family: var(--sans);
  background: var(--paper);
  color: var(--graphite);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img{ max-width:100%; display:block; }

a{ color: inherit; }

:focus-visible{
  outline: 2px solid var(--brass);
  outline-offset: 3px;
}

.wrap{
  max-width: var(--max);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

h1,h2,h3,h4{
  font-family: var(--serif);
  font-weight: 500;
  color: var(--ink);
  margin: 0 0 0.4em;
  line-height: 1.12;
  letter-spacing: -0.01em;
}
h1{ font-size: clamp(2.4rem, 5vw, 4.1rem); font-weight: 500; }
h2{ font-size: clamp(1.7rem, 3.2vw, 2.5rem); }
h3{ font-size: clamp(1.2rem, 2vw, 1.5rem); }

p{ margin: 0 0 1.1em; max-width: 62ch; }
.lede{ font-size: 1.2rem; color: var(--steel); max-width: 46ch; }

.mono-label{
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: var(--brass-dark);
}

/* ---------- Buttons ---------- */
.btn{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 0.85em 1.5em;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.96rem;
  border-radius: 2px;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease;
}
.btn-primary{ background: var(--brass); color: var(--white); }
.btn-primary:hover{ background: var(--brass-dark); }
.btn-ghost{ background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-ghost:hover{ background: var(--ink); color: var(--paper); }
.btn-ghost-light{ background: transparent; color: var(--paper); border-color: var(--line-dark); }
.btn-ghost-light:hover{ background: var(--paper); color: var(--ink); }

/* ---------- Header / Nav ---------- */
.site-header{
  background: var(--ink);
  color: var(--paper);
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid var(--line-dark);
}
.site-header .wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height: 78px;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  text-decoration:none;
  color: var(--paper);
}
.brand-badge{
  background: var(--paper);
  border-radius: 6px;
  padding: 5px 8px;
  display:flex;
  align-items:center;
  flex: none;
  box-shadow: 0 1px 2px rgba(0,0,0,0.25);
}
.brand-badge img{
  height: 34px;
  width: auto;
  display:block;
}
.brand-mark{
  width: 30px; height: 30px;
  border: 1.5px solid var(--brass);
  display:flex; align-items:center; justify-content:center;
  font-family: var(--serif);
  font-size: 15px;
  color: var(--brass);
  flex: none;
}
.footer-brand .brand-badge{ margin-bottom: 6px; }
.brand-name{
  font-family: var(--serif);
  font-size: 1.02rem;
  letter-spacing: 0.01em;
}
.brand-name b{ font-weight: 600; color: var(--brass); }

.nav-links{
  display:flex;
  gap: 30px;
  list-style:none;
  margin:0; padding:0;
  font-size: 0.93rem;
}
.nav-links a{
  text-decoration:none;
  color: var(--paper);
  opacity: 0.82;
  position: relative;
  padding-bottom: 4px;
}
.nav-links a:hover{ opacity: 1; }
.nav-links a.active{ opacity: 1; }
.nav-links a.active::after{
  content:"";
  position:absolute;
  left:0; right:0; bottom:-4px;
  height:2px;
  background: var(--brass);
}
.nav-cta{ display:flex; align-items:center; gap: 18px; }
.nav-cta .btn{ padding: 0.6em 1.1em; font-size: 0.86rem; }

.nav-toggle{
  display:none;
  background:none; border:none;
  color: var(--paper);
  width: 30px; height: 22px;
  position: relative;
  cursor:pointer;
}
.nav-toggle span, .nav-toggle::before, .nav-toggle::after{
  content:"";
  position:absolute; left:0; right:0;
  height:1.5px; background:var(--paper);
}
.nav-toggle span{ top:50%; transform: translateY(-50%); }
.nav-toggle::before{ top:0; }
.nav-toggle::after{ bottom:0; }

@media (max-width: 860px){
  .nav-links{
    position:absolute; top:78px; left:0; right:0;
    background: var(--ink);
    flex-direction:column;
    gap:0;
    max-height:0;
    overflow:hidden;
    border-bottom: 1px solid var(--line-dark);
    transition: max-height 220ms ease;
  }
  .nav-links.open{ max-height: 360px; }
  .nav-links li{ border-top: 1px solid var(--line-dark); }
  .nav-links a{ display:block; padding: 16px var(--gutter); }
  .nav-links a.active::after{ display:none; }
  .nav-cta .btn-ghost-light{ display:none; }
  .nav-toggle{ display:block; }
}

/* ---------- Hero ---------- */
.hero{
  background: var(--ink) url('delarcad-hero.jpg') center 32% / cover no-repeat;
  color: var(--paper);
  position: relative;
  overflow:hidden;
  border-bottom: 1px solid var(--line-dark);
}
.hero::before{
  content:"";
  position:absolute; inset:0;
  background: linear-gradient(100deg, rgba(15,20,32,0.92) 0%, rgba(15,20,32,0.78) 34%, rgba(15,20,32,0.42) 62%, rgba(15,20,32,0.22) 100%);
  z-index:1;
}
.hero .wrap{
  position:relative;
  z-index:2;
  padding-top: clamp(80px, 14vw, 160px);
  padding-bottom: clamp(80px, 14vw, 160px);
}
.hero-content{ max-width: 640px; }
.hero h1{ color: var(--paper); }
.hero .lede{ color: rgba(246,244,239,0.78); }
.hero-cta{ display:flex; gap:14px; margin-top: 28px; flex-wrap:wrap; }

.blueprint-grid{
  position:absolute; inset:0;
  background-image:
    linear-gradient(var(--line-dark) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-dark) 1px, transparent 1px);
  background-size: 42px 42px;
  opacity: 0.5;
  mask-image: linear-gradient(to bottom, transparent, black 20%, black 80%, transparent);
}

.elevation-svg{ width:100%; height:auto; }
.elevation-svg line, .elevation-svg path, .elevation-svg rect, .elevation-svg circle{
  stroke: var(--brass);
}
.elevation-svg text{
  fill: rgba(246,244,239,0.55);
  font-family: var(--mono);
}

.page-hero{
  background: var(--ink);
  color: var(--paper);
  border-bottom: 1px solid var(--line-dark);
}
.page-hero .wrap{
  position:relative; z-index:2;
  padding-top: clamp(52px, 8vw, 88px);
  padding-bottom: clamp(44px, 7vw, 72px);
}
.page-hero h1{ color: var(--paper); max-width: 18ch; }
.page-hero .lede{ color: rgba(246,244,239,0.72); margin-top: 14px; }

/* ---------- Sections ---------- */
section{ padding: clamp(56px, 8vw, 96px) 0; }
.section-tight{ padding: clamp(36px, 5vw, 56px) 0; }
.section-alt{ background: var(--paper-2); }

.section-head{
  display:flex;
  justify-content:space-between;
  align-items:flex-end;
  gap: 30px;
  margin-bottom: 44px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 22px;
}
.section-head p{ margin:0; }

.hr{ border:none; border-top: 1px solid var(--line); margin: 0; }

/* ---------- Grids / Cards ---------- */
.grid{ display:grid; gap: 34px; }
.grid-3{ grid-template-columns: repeat(3, 1fr); }
.grid-2{ grid-template-columns: repeat(2, 1fr); }
@media (max-width: 900px){
  .grid-3{ grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px){
  .grid-3, .grid-2{ grid-template-columns: 1fr; }
}

.panel{
  border-top: 2px solid var(--ink);
  padding-top: 20px;
}
.panel .mono-label{ display:block; margin-bottom: 10px; }

.stat{ border-left: 1px solid var(--line); padding-left: 22px; }
.stat .num{
  font-family: var(--serif);
  font-size: clamp(2.1rem, 4vw, 3rem);
  color: var(--ink);
  display:block;
  line-height:1;
  margin-bottom: 6px;
}
.stat .label{ color: var(--steel); font-size: 0.94rem; }

/* Project / work cards */
.work-card{
  text-decoration:none;
  color: inherit;
  display:block;
}
.work-thumb{
  aspect-ratio: 4/3;
  background: var(--ink);
  position:relative;
  overflow:hidden;
  margin-bottom: 16px;
}
.work-thumb svg{ width:100%; height:100%; }
.work-card h3{ margin-bottom: 4px; }
.work-meta{ color: var(--steel); font-size: 0.92rem; }

/* Process steps (a true sequence — numbering earned) */
.process{
  display:grid;
  gap: 0;
  border-top: 1px solid var(--line);
}
.process-step{
  display:grid;
  grid-template-columns: 90px 1fr;
  gap: 26px;
  padding: 34px 0;
  border-bottom: 1px solid var(--line);
}
.process-step .step-num{
  font-family: var(--serif);
  font-size: 2rem;
  color: var(--brass);
}
@media (max-width: 640px){
  .process-step{ grid-template-columns: 50px 1fr; }
  .process-step .step-num{ font-size: 1.4rem; }
}

/* Values / list rows */
.rowlist{ list-style:none; margin:0; padding:0; }
.rowlist li{
  display:flex;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.rowlist li:first-child{ border-top: 1px solid var(--line); }
.rowlist .rl-label{ flex: 0 0 200px; color: var(--steel); font-size: 0.94rem; }

/* Resource cards */
.resource-card{
  border: 1px solid var(--line);
  padding: 26px;
  display:flex;
  flex-direction:column;
  gap: 10px;
  height:100%;
}
.resource-kind{
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--brass-dark);
  letter-spacing: 0.02em;
}

/* Quote / pull */
.pull{
  font-family: var(--serif);
  font-size: clamp(1.3rem, 2.4vw, 1.7rem);
  color: var(--ink);
  border-left: 2px solid var(--brass);
  padding-left: 26px;
  max-width: 60ch;
}
.pull cite{ display:block; font-style:normal; font-size:0.9rem; color: var(--steel); margin-top:14px; font-family: var(--sans); }

/* ---------- Forms ---------- */
.form-grid{ display:grid; gap: 22px; grid-template-columns: 1fr 1fr; }
.form-grid .full{ grid-column: 1 / -1; }
@media (max-width: 700px){ .form-grid{ grid-template-columns: 1fr; } }

label{
  display:block;
  font-size: 0.88rem;
  color: var(--steel);
  margin-bottom: 8px;
}
input, select, textarea{
  width:100%;
  font-family: var(--sans);
  font-size: 1rem;
  padding: 0.8em 0.9em;
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--graphite);
  border-radius: 2px;
}
input:focus, select:focus, textarea:focus{
  outline: none;
  border-color: var(--brass);
}
textarea{ resize: vertical; min-height: 120px; }

.form-note{ font-size: 0.86rem; color: var(--steel); margin-top: 16px; }
.form-success{
  display:none;
  border: 1px solid var(--brass);
  background: #FBF6EA;
  padding: 18px 22px;
  margin-top: 18px;
  font-size: 0.95rem;
}
.form-success.show{ display:block; }

/* ---------- Footer ---------- */
.site-footer{
  background: var(--ink);
  color: rgba(246,244,239,0.75);
  border-top: 1px solid var(--line-dark);
}
.footer-top{
  padding: 56px 0 40px;
  display:grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 30px;
}
@media (max-width: 800px){
  .footer-top{ grid-template-columns: 1fr 1fr; }
}
.footer-top h4{
  color: var(--paper);
  font-family: var(--sans);
  font-weight:600;
  font-size: 0.86rem;
  letter-spacing: 0.02em;
  margin-bottom: 16px;
}
.footer-top ul{ list-style:none; margin:0; padding:0; }
.footer-top li{ margin-bottom: 10px; font-size: 0.92rem; }
.footer-top a{ text-decoration:none; color: inherit; opacity:0.85; }
.footer-top a:hover{ opacity:1; color: var(--brass); }
.footer-brand p{ color: rgba(246,244,239,0.6); font-size: 0.92rem; margin-top: 14px; }
.footer-bottom{
  border-top: 1px solid var(--line-dark);
  padding: 22px 0;
  display:flex;
  justify-content:space-between;
  font-size: 0.82rem;
  color: rgba(246,244,239,0.5);
  flex-wrap:wrap;
  gap: 10px;
}

/* ---------- Utility ---------- */
.center{ text-align:center; }
.mt-0{ margin-top:0; }
.narrow{ max-width: 68ch; }
.tag-row{ display:flex; gap:10px; flex-wrap:wrap; margin-top: 18px; }
.tag{
  border:1px solid var(--line);
  padding: 5px 12px;
  font-size: 0.8rem;
  color: var(--steel);
  font-family: var(--mono);
}