/* ==========================================================================
   De Impiana Concept (Design System)
   Modern architectural studio: white/off-white base, ink black headings,
   lime green (#7AC142) accent, thin blueprint/technical-drawing lines.
   ========================================================================== */

:root{
  --color-bg: #FCFCFA;
  --color-bg-alt: #F3F3EE;
  --color-ink: #101210;
  --color-ink-soft: #3A3D3A;
  --color-gray: #6E7268;
  --color-line: #DEDED6;
  --color-line-strong: #C9C9BE;
  --color-lime: #7AC142;
  --color-lime-dark: #5C9A2E;
  --color-lime-soft: #EAF5DD;
  --color-white: #ffffff;

  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;

  --container: 1200px;
  --gutter: clamp(1.25rem, 4vw, 3rem);

  --ease: cubic-bezier(.16,.84,.44,1);
}

/* ---------- Reset ---------- */
*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: auto; }
body, h1, h2, h3, h4, p, figure, blockquote, dl, dd{ margin: 0; }
html, body{ height: 100%; }
body{
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img{ max-width: 100%; display: block; }
a{ color: inherit; text-decoration: none; }
ul{ list-style: none; padding: 0; }
button{ font: inherit; cursor: pointer; }
input, select, textarea{ font: inherit; }
h1,h2,h3,h4{
  font-family: var(--font-heading);
  color: var(--color-ink);
  line-height: 1.1;
  letter-spacing: -0.01em;
  font-weight: 600;
}
.lenis{ scroll-behavior: auto !important; }

/* ---------- Layout helpers ---------- */
.container{
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section{ padding-block: clamp(4rem, 9vw, 7.5rem); position: relative; }
.section-alt{ background: var(--color-bg-alt); }
.section-dark{ background: var(--color-ink); color: var(--color-white); }
.section-dark h2, .section-dark h3{ color: var(--color-white); }
.section-lime{ background: var(--color-lime); color: var(--color-ink); }

.section-head{ max-width: 640px; margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.section-head.center{ margin-inline: auto; text-align: center; }
.eyebrow{
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-lime-dark);
  margin-bottom: 0.9rem;
}
.eyebrow::before{
  content: "";
  width: 22px;
  height: 2px;
  background: var(--color-lime);
  display: inline-block;
}
.section-dark .eyebrow{ color: var(--color-lime); }
.section-head h2{ font-size: clamp(1.8rem, 3.4vw, 2.75rem); }
.section-head p{ color: var(--color-gray); font-size: 1.05rem; margin-top: 0.9rem; }
.section-dark .section-head p{ color: #C9CCC5; }

/* ---------- Blueprint decorative accents ---------- */
.blueprint-grid{
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--color-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-line) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.35;
  mask-image: linear-gradient(to bottom, black, transparent 85%);
  z-index: 0;
}
.section-dark .blueprint-grid{
  background-image:
    linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px);
  opacity: 1;
}
.corner-mark{
  position: absolute;
  width: 34px;
  height: 34px;
  pointer-events: none;
  opacity: 0.55;
  z-index: 1;
  color: var(--color-ink-soft);
}
.corner-mark svg{ width: 100%; height: 100%; }
.section-dark .corner-mark{ color: rgba(255,255,255,0.5); }
.corner-mark.tl{ top: clamp(1rem,3vw,2rem); left: clamp(1rem,3vw,2rem); }
.corner-mark.tr{ top: clamp(1rem,3vw,2rem); right: clamp(1rem,3vw,2rem); transform: scaleX(-1); }
.corner-mark.bl{ bottom: clamp(1rem,3vw,2rem); left: clamp(1rem,3vw,2rem); transform: scaleY(-1); }
.corner-mark.br{ bottom: clamp(1rem,3vw,2rem); right: clamp(1rem,3vw,2rem); transform: scale(-1,-1); }

.dim-line{ display: flex; align-items: center; gap: 0.6rem; color: var(--color-gray); font-size: 0.8rem; letter-spacing: 0.08em; }
.dim-line::before, .dim-line::after{ content:""; height:1px; width: 28px; background: var(--color-line-strong); }

/* ---------- Buttons ---------- */
.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.9rem 1.7rem;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 2px;
  border: 1.5px solid transparent;
  transition: transform 0.35s var(--ease), background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
  white-space: nowrap;
}
.btn:hover{ transform: translateY(-2px); }
.btn--primary{ background: var(--color-lime); color: var(--color-ink); }
.btn--primary:hover{ background: var(--color-lime-dark); }
.btn--outline{ border-color: var(--color-ink); color: var(--color-ink); background: transparent; }
.btn--outline:hover{ background: var(--color-ink); color: var(--color-white); }
.section-dark .btn--outline{ border-color: var(--color-white); color: var(--color-white); }
.section-dark .btn--outline:hover{ background: var(--color-white); color: var(--color-ink); }
.btn--full{ width: 100%; }
.btn-row{ display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; }

/* ==========================================================================
   Header / Nav
   ========================================================================== */
.site-header{
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem var(--gutter);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, padding 0.3s ease;
}
/* backdrop-filter lives on a pseudo-element, not the header itself, so the
   header never becomes a containing block for its fixed mobile nav-menu. */
.site-header::before{
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(252,252,250,0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.site-header.is-scrolled{
  border-bottom-color: var(--color-line);
  box-shadow: 0 8px 24px rgba(16,18,16,0.05);
  padding-block: 0.75rem;
}
.brand{ display: flex; align-items: center; gap: 0.7rem; }
.brand img{ height: 38px; width: auto; }
.nav-menu{
  display: flex;
  align-items: center;
  gap: clamp(1.4rem, 3vw, 2.4rem);
}
.nav-menu a{
  font-family: var(--font-heading);
  font-size: 0.92rem;
  font-weight: 500;
  position: relative;
  padding-bottom: 3px;
}
.nav-menu a::after{
  content:"";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--color-lime);
  transition: width 0.3s var(--ease);
}
.nav-menu a:hover::after, .nav-menu a[aria-current="page"]::after{ width: 100%; }
.nav-menu a[aria-current="page"]{ color: var(--color-lime-dark); }
.nav-right{ display: flex; align-items: center; gap: 1.4rem; }
.nav-toggle{
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 6px;
  z-index: 600;
}
.nav-toggle span{ width: 24px; height: 2px; background: var(--color-ink); transition: transform 0.3s var(--ease), opacity 0.3s ease; }
.nav-toggle.is-active span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-active span:nth-child(2){ opacity: 0; }
.nav-toggle.is-active span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero{
  position: relative;
  padding-top: clamp(7.5rem, 16vw, 11rem);
  padding-bottom: clamp(4rem, 8vw, 6rem);
  overflow: hidden;
}
.hero .container{
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
  position: relative;
  z-index: 2;
}
.hero-kicker{
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-heading);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-lime-dark);
  background: var(--color-lime-soft);
  border: 1px solid var(--color-lime);
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  margin-bottom: 1.6rem;
}
.hero h1{
  font-size: clamp(2.3rem, 5.2vw, 3.75rem);
  margin-bottom: 1.4rem;
}
.hero h1 em{
  font-style: normal;
  color: var(--color-lime-dark);
  position: relative;
}
.hero p.lede{
  font-size: 1.1rem;
  color: var(--color-ink-soft);
  max-width: 46ch;
  margin-bottom: 2.2rem;
}
.hero-meta{
  display: flex;
  gap: clamp(1.5rem, 4vw, 3rem);
  margin-top: 2.75rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--color-line);
}
.hero-meta div strong{
  display: block;
  font-family: var(--font-heading);
  font-size: 1.4rem;
  color: var(--color-ink);
}
.hero-meta div span{ font-size: 0.82rem; color: var(--color-gray); }

.hero-visual{ position: relative; }
.hero-visual .frame-main{
  aspect-ratio: 4 / 5;
  overflow: hidden;
  border-radius: 4px;
  position: relative;
  border: 1px solid var(--color-line-strong);
}
.hero-visual .frame-main img{ width: 100%; height: 100%; object-fit: cover; }
.hero-visual .frame-float{
  position: absolute;
  width: 46%;
  aspect-ratio: 4 / 3;
  bottom: -8%;
  left: -12%;
  border-radius: 4px;
  overflow: hidden;
  border: 4px solid var(--color-bg);
  box-shadow: 0 20px 45px rgba(16,18,16,0.18);
}
.hero-visual .frame-float img{ width: 100%; height: 100%; object-fit: cover; }
.hero-visual .tag-chip{
  position: absolute;
  top: -18px;
  right: 6%;
  background: var(--color-ink);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: 0.8rem;
  padding: 0.7rem 1.1rem;
  border-radius: 3px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 12px 30px rgba(16,18,16,0.22);
}
.tag-chip .dot{ width: 8px; height: 8px; border-radius: 50%; background: var(--color-lime); }

/* ==========================================================================
   Feature / What we do
   ========================================================================== */
.feature-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--color-line);
  border: 1px solid var(--color-line);
  position: relative;
  z-index: 1;
}
.feature-card{
  background: var(--color-bg);
  padding: clamp(1.75rem, 3vw, 2.5rem);
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}
.feature-card .num{
  font-family: var(--font-heading);
  font-size: 0.85rem;
  color: var(--color-lime-dark);
}
.feature-card .icon{
  width: 46px; height: 46px;
  display: flex; align-items: center; justify-content: center;
}
.feature-card .icon svg{ width: 100%; height: 100%; }
.feature-card h3{ font-size: 1.2rem; }
.feature-card p{ color: var(--color-gray); font-size: 0.95rem; }

/* ==========================================================================
   Stat / social proof band
   ========================================================================== */
.stat-band{
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
.stat-number{
  font-family: var(--font-heading);
  font-size: clamp(3.2rem, 8vw, 5.5rem);
  color: var(--color-lime);
  line-height: 1;
}
.stat-band h2{ margin-bottom: 1rem; }
.stat-band p{ color: #C9CCC5; max-width: 48ch; margin-bottom: 1.75rem; }
.stat-card{
  border: 1px solid rgba(255,255,255,0.18);
  padding: clamp(1.5rem, 3vw, 2.25rem);
  border-radius: 4px;
  background: rgba(255,255,255,0.03);
}

/* ==========================================================================
   Portfolio grid (home snapshot + full page)
   ========================================================================== */
.portfolio-grid{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(0.75rem, 1.5vw, 1.25rem);
}
.portfolio-grid.snapshot{ grid-template-columns: repeat(4, 1fr); }
.portfolio-item{
  position: relative;
  overflow: hidden;
  border-radius: 3px;
  aspect-ratio: 1 / 1;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-line);
}
.portfolio-item img{
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.7s var(--ease);
}
.portfolio-item:hover img{ transform: scale(1.06); }
.portfolio-item .cap{
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 0.9rem 1rem;
  background: linear-gradient(to top, rgba(16,18,16,0.85), transparent);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.35s ease, transform 0.35s ease;
}
.portfolio-item:hover .cap{ opacity: 1; transform: translateY(0); }

/* full portfolio page variations */
.portfolio-full{ grid-template-columns: repeat(4, 1fr); grid-auto-rows: minmax(160px, 1fr); }
.portfolio-full .portfolio-item{ aspect-ratio: auto; }
.portfolio-full .span-2{ grid-column: span 2; }
.portfolio-full .row-2{ grid-row: span 2; }

.section-foot-cta{ margin-top: clamp(2.5rem, 5vw, 3.5rem); text-align: center; }

/* ==========================================================================
   CTA band
   ========================================================================== */
.cta-band{
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-band h2{ font-size: clamp(1.9rem, 4vw, 3rem); max-width: 20ch; margin-inline: auto; margin-bottom: 1.5rem; }
.cta-band .btn-row{ justify-content: center; }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer{
  background: var(--color-ink);
  color: #C9CCC5;
  padding-block: clamp(3rem, 6vw, 4.5rem) 1.75rem;
}
.footer-grid{
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
  gap: clamp(2rem, 4vw, 3rem);
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.footer-brand img{ height: 34px; margin-bottom: 1rem; }
.footer-brand p{ font-size: 0.9rem; max-width: 32ch; color: #A7ABA1; }
.footer-col h4{
  font-family: var(--font-heading);
  color: var(--color-white);
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1.1rem;
}
.footer-col ul{ display: flex; flex-direction: column; gap: 0.65rem; font-size: 0.92rem; }
.footer-col a:hover{ color: var(--color-lime); }
.footer-bottom{
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 1.75rem;
  font-size: 0.8rem;
  color: #82867C;
}
.footer-bottom .reg{ letter-spacing: 0.03em; }

/* ==========================================================================
   Page hero banner (Portfolio / About / Contact)
   ========================================================================== */
.page-hero{
  padding-top: clamp(7.5rem, 14vw, 10rem);
  padding-bottom: clamp(3rem, 6vw, 4.5rem);
  position: relative;
}
.page-hero .eyebrow{ margin-bottom: 1.1rem; }
.page-hero h1{ font-size: clamp(2.1rem, 4.6vw, 3.2rem); max-width: 16ch; }
.page-hero p{ color: var(--color-gray); font-size: 1.05rem; max-width: 54ch; margin-top: 1.1rem; }

/* ==========================================================================
   About page
   ========================================================================== */
.about-grid{
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}
.about-grid img{ border-radius: 4px; border: 1px solid var(--color-line-strong); }
.about-copy p + p{ margin-top: 1.1rem; }
.about-copy p{ color: var(--color-ink-soft); }

.reason-list{ display: flex; flex-direction: column; gap: 1.5rem; }
.reason-item{ display: flex; gap: 1.1rem; align-items: flex-start; }
.reason-item .mark{
  flex-shrink: 0;
  width: 40px; height: 40px;
  border: 1.5px solid var(--color-lime);
  color: var(--color-lime-dark);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  border-radius: 2px;
}
.reason-item h4{ font-size: 1.05rem; margin-bottom: 0.35rem; }
.reason-item p{ color: var(--color-gray); font-size: 0.95rem; }

.credibility-note{
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-line);
  font-size: 0.82rem;
  color: var(--color-gray);
  letter-spacing: 0.02em;
}

/* ==========================================================================
   Contact page
   ========================================================================== */
.contact-grid{
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(2rem, 5vw, 3.5rem);
  align-items: start;
}
.contact-card{
  border: 1px solid var(--color-line);
  border-radius: 4px;
  padding: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 1.25rem;
  background: var(--color-bg);
}
.contact-card h4{
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-lime-dark);
  margin-bottom: 0.6rem;
}
.contact-card p, .contact-card address{ font-style: normal; font-size: 1rem; color: var(--color-ink-soft); }
.contact-card a.link-line{
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-ink);
  padding-bottom: 2px;
}
.contact-card a.link-line:hover{ color: var(--color-lime-dark); border-color: var(--color-lime-dark); }
.map-embed{
  width: 100%;
  aspect-ratio: 16/11;
  border: 1px solid var(--color-line);
  border-radius: 4px;
  overflow: hidden;
}
.map-embed iframe{ width: 100%; height: 100%; border: 0; }

.form-card{
  border: 1px solid var(--color-line);
  border-radius: 4px;
  padding: clamp(1.75rem, 3.5vw, 2.75rem);
  background: var(--color-bg-alt);
}
.form-row{ margin-bottom: 1.3rem; }
.form-row label{
  display: block;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
}
.form-row input, .form-row select, .form-row textarea{
  width: 100%;
  padding: 0.85rem 1rem;
  border: 1px solid var(--color-line-strong);
  border-radius: 2px;
  background: var(--color-white);
  color: var(--color-ink);
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus{
  outline: none;
  border-color: var(--color-lime);
  box-shadow: 0 0 0 3px var(--color-lime-soft);
}
.form-row textarea{ resize: vertical; min-height: 120px; }
.form-two{ display: grid; grid-template-columns: 1fr 1fr; gap: 1rem 1.3rem; }
.form-note{ font-size: 0.8rem; color: var(--color-gray); margin-top: 0.9rem; text-align: center; }

/* ==========================================================================
   Reveal animation base state (GSAP controls the rest)
   ========================================================================== */
.reveal{ visibility: hidden; }
.no-js .reveal{ visibility: visible; }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1024px){
  .hero .container{ grid-template-columns: 1fr; }
  .hero-visual{ max-width: 480px; }
  .stat-band{ grid-template-columns: 1fr; }
  .about-grid, .contact-grid{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr 1fr; }
}
@media (max-width: 860px){
  .nav-menu{
    position: fixed;
    inset: 0;
    top: 0;
    background: var(--color-ink);
    flex-direction: column;
    justify-content: center;
    gap: 2.2rem;
    transform: translateX(100%);
    transition: transform 0.45s var(--ease);
    z-index: 550;
  }
  .nav-menu.is-open{ transform: translateX(0); }
  .nav-menu a{ color: var(--color-white); font-size: 1.4rem; }
  .nav-menu a::after{ background: var(--color-lime); }
  .nav-right .btn--primary{ display: none; }
  .nav-menu .nav-cta-mobile{ display: inline-flex; }
  .nav-toggle{ display: flex; }
  .feature-grid{ grid-template-columns: 1fr; }
  .portfolio-grid.snapshot{ grid-template-columns: repeat(2, 1fr); }
  .portfolio-full{ grid-template-columns: repeat(2, 1fr); }
  .portfolio-full .span-2{ grid-column: span 2; }
}
@media (min-width: 861px){
  .nav-cta-mobile{ display: none; }
}
@media (max-width: 640px){
  .hero-visual .frame-float{ display: none; }
  .form-two{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr; }
  .footer-bottom{ flex-direction: column; align-items: flex-start; }
  .stat-band{ text-align: left; }
}