/* ==========================================================================
   MOD Architecture + Design — Design System
   Colors pulled directly from brand logo files (MOD.svg):
     black/wordmark: #231F20
     primary blue:   #0079AB
     accent blue:    #2A8EBF
   ========================================================================== */

:root {
  --color-ink: #231f20;
  --color-blue: #0079ab;
  --color-blue-light: #2a8ebf;
  --color-gray: #8a8d90;
  --color-gray-light: #e9e9e8;
  --color-bg: #ffffff;
  --color-bg-offwhite: #f7f6f4;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;

  --container-max: 1280px;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 7rem;

  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-ink);
  background: var(--color-bg);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

h1, h2, h3, h4 {
  font-weight: 500;
  line-height: 1.15;
  margin: 0 0 var(--space-sm);
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.4rem, 5vw, 4rem); font-weight: 300; }
h2 { font-size: clamp(1.8rem, 3.2vw, 2.6rem); font-weight: 300; }
h3 { font-size: 1.3rem; font-weight: 500; }

p { margin: 0 0 var(--space-sm); color: #4a4a4a; }

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.75rem;
  color: var(--color-blue);
  font-weight: 600;
  margin-bottom: var(--space-xs);
  display: inline-block;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 0.85rem 2rem;
  border: 1px solid var(--color-ink);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  background: transparent;
}
.btn:hover { background: var(--color-ink); color: #fff; }
.btn-solid {
  background: var(--color-ink);
  color: #fff;
  border-color: var(--color-ink);
}
.btn-solid:hover { background: var(--color-blue); border-color: var(--color-blue); }
.btn-light { border-color: #fff; color: #fff; }
.btn-light:hover { background: #fff; color: var(--color-ink); }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem var(--space-md);
  transition: var(--transition);
  background: transparent;
}
.site-header.scrolled {
  background: rgba(255,255,255,0.96);
  box-shadow: 0 1px 0 rgba(0,0,0,0.06);
  padding: 1rem var(--space-md);
}
.site-header .logo { flex-shrink: 0; }
.site-header .logo img { height: 34px; transition: var(--transition); }
.site-header nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 1.5rem 1.75rem;
  flex: 1 1 auto;
  min-width: 0;
}
.site-header nav a {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
  transition: var(--transition);
}
.site-header.scrolled nav a,
.site-header.light nav a { color: var(--color-ink); }
.site-header.scrolled .logo-white,
.site-header.light .logo-white { display: none; }
.site-header .logo-dark { display: none; }
.site-header.scrolled .logo-dark,
.site-header.light .logo-dark { display: block; }
.site-header nav a:hover { color: var(--color-blue); }
.site-header nav a.btn {
  color: #fff;
  border-color: #fff;
}
.site-header.scrolled nav a.btn,
.site-header.light nav a.btn {
  color: var(--color-ink);
  border-color: var(--color-ink);
}
.site-header.scrolled nav a.btn:hover,
.site-header.light nav a.btn:hover,
.site-header nav a.btn:hover { background: var(--color-ink); color: #fff; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 30px;
  height: 30px;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  z-index: 110;
}
.nav-toggle .bar {
  display: block;
  width: 100%;
  height: 2px;
  background: #fff;
  transition: var(--transition);
}
.site-header.scrolled .nav-toggle .bar,
.site-header.light .nav-toggle .bar,
.site-header.nav-open .nav-toggle .bar { background: var(--color-ink); }
.site-header.nav-open .nav-toggle .bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.site-header.nav-open .nav-toggle .bar:nth-child(2) { opacity: 0; }
.site-header.nav-open .nav-toggle .bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.site-header.nav-open { background: rgba(255,255,255,0.98); }
.site-header.nav-open .logo-white { display: none; }
.site-header.nav-open .logo-dark { display: block; }

/* ---------- Nav dropdown ---------- */
.nav-dropdown { position: relative; }
.nav-dropdown > a::after {
  content: '\25BE';
  display: inline-block;
  font-size: 0.6rem;
  margin-left: 0.35rem;
  vertical-align: 1px;
}
.nav-dropdown .dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  margin-top: 0.9rem;
  min-width: 190px;
  background: #fff;
  box-shadow: 0 16px 36px rgba(0,0,0,0.14);
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(-6px);
  transition: var(--transition);
  z-index: 200;
}
.nav-dropdown:hover .dropdown-menu,
.nav-dropdown:focus-within .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.nav-dropdown .dropdown-menu a {
  display: block;
  padding: 0.85rem 1.25rem;
  color: var(--color-ink) !important;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
  white-space: nowrap;
}
.nav-dropdown .dropdown-menu a:hover { background: var(--color-bg-offwhite); color: var(--color-blue) !important; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  height: 100vh;
  min-height: 560px;
  display: flex;
  align-items: flex-end;
  color: #fff;
  overflow: hidden;
  background-color: var(--color-ink);
}
.hero img.hero-bg,
.hero video.hero-bg,
.hero .hero-bg-placeholder {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-bg-placeholder {
  background: linear-gradient(135deg, #2c2c2c 0%, #1a1a1a 60%, #0079ab 160%);
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(0,0,0,0.55) 0%, rgba(0,0,0,0.05) 55%, rgba(0,0,0,0.25) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: 0 var(--space-md) var(--space-xl);
  max-width: 760px;
}
.hero-content h1 { color: #fff; margin-bottom: var(--space-sm); }
.hero-content p { color: rgba(255,255,255,0.85); font-size: 1.1rem; max-width: 540px; }

.hero-sm { min-height: max(60vh, 480px); }
.hero-sm .hero-content { padding-bottom: calc(var(--space-xl) - 1rem); }

/* ---------- Sections ---------- */
section { padding: var(--space-xl) 0; }
.section-offwhite { background: var(--color-bg-offwhite); }
.section-dark { background: var(--color-ink); color: #fff; }
.section-dark p { color: rgba(255,255,255,0.75); }

.section-head {
  max-width: 640px;
  margin-bottom: var(--space-lg);
}
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

/* ---------- Two-office split ---------- */
.offices-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}
.office-panel {
  padding: var(--space-lg) var(--space-md);
  position: relative;
}
.office-panel.manhattan { background: var(--color-bg-offwhite); }
.office-panel.denver { background: var(--color-ink); color: #fff; }
.office-panel.denver p { color: rgba(255,255,255,0.75); }
.office-panel.denver .eyebrow { color: var(--color-blue-light); }
.office-panel h3.location {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-blue);
  margin-bottom: 0.4rem;
}
.office-panel.denver h3.location { color: var(--color-blue-light); }
.office-panel ul {
  list-style: none;
  padding: 0;
  margin: var(--space-sm) 0;
}
.office-panel li {
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(0,0,0,0.08);
  font-size: 0.95rem;
}
.office-panel.denver li { border-bottom-color: rgba(255,255,255,0.12); }

/* ---------- Reusable two-column content grid ----------
   Use this (instead of inline display:grid/grid-template-columns)
   for any side-by-side text+image or two-panel section so it
   automatically stacks to one column on mobile. */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}
@media (max-width: 700px) {
  .grid-2 { grid-template-columns: 1fr; }
}

/* ---------- Project grid ---------- */
.filter-bar {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: var(--space-md);
}
.filter-btn {
  padding: 0.5rem 1.2rem;
  border: 1px solid var(--color-gray-light);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  background: #fff;
  cursor: pointer;
  transition: var(--transition);
}
.filter-btn:hover { border-color: var(--color-ink); }
.filter-btn.active { background: var(--color-ink); color: #fff; border-color: var(--color-ink); }

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}
.project-card {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--color-gray-light);
  display: block;
}
.project-card img,
.project-card .img-placeholder {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.project-card .img-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #d8d8d6, #bfc4c6);
  color: #6b6b6b;
  font-size: 0.75rem;
  text-align: center;
  padding: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.project-card:hover img { transform: scale(1.06); }
.project-card::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 50%;
  background: linear-gradient(0deg, rgba(0,0,0,0.92) 0%, rgba(0,0,0,0.92) 35%, rgba(0,0,0,0) 100%);
  pointer-events: none;
  z-index: 1;
}
.project-card .card-info {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 1.25rem 1.4rem;
  color: #fff;
  z-index: 2;
}
.project-card .card-info .loc {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-blue-light);
  display: block;
  margin-bottom: 0.15rem;
}
.project-card .card-info .name { font-weight: 500; font-size: 1.05rem; }
.project-card.hidden { display: none; }

/* ---------- For-Sale Listings ---------- */
.btn-cta {
  background: var(--color-blue);
  color: #fff !important;
  border-color: var(--color-blue) !important;
}
.btn-cta:hover { background: #fff; color: var(--color-blue) !important; }

.listing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}
.listing-card {
  background: #fff;
  border: 1px solid var(--color-gray-light);
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}
.listing-card:hover { box-shadow: 0 18px 40px rgba(0,0,0,0.1); transform: translateY(-3px); }
.listing-card .listing-image {
  aspect-ratio: 4/3;
  overflow: hidden;
}
.listing-card .listing-body { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; }
.listing-card .loc {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-blue);
  font-weight: 600;
  margin-bottom: 0.4rem;
}
.status-badge {
  display: inline-block;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  padding: 0.3rem 0.7rem;
  margin-bottom: 0.85rem;
  align-self: flex-start;
}
.status-badge.available { background: var(--color-blue); color: #fff; }
.status-badge.coming-soon { background: var(--color-ink); color: #fff; }
.status-badge.interest-list { background: var(--color-gray-light); color: var(--color-ink); }
.listing-card .price {
  font-size: 0.85rem;
  color: var(--color-gray);
  margin-bottom: 0.75rem;
}
.listing-card h3 { margin-bottom: 0.25rem; }
.listing-card p { flex: 1; }
.listing-card .btn { align-self: flex-start; margin-top: 0.5rem; }

.for-sale-section {
  background: var(--color-bg-offwhite);
  border-top: 3px solid var(--color-blue);
  border-bottom: 3px solid var(--color-blue);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-ink);
  color: rgba(255,255,255,0.8);
  padding: var(--space-lg) 0 var(--space-md);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}
.footer-grid h4 {
  color: #fff;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 1rem;
}
.footer-grid p, .footer-grid a { font-size: 0.9rem; display: block; margin-bottom: 0.4rem; color: rgba(255,255,255,0.7); }
.footer-grid a:hover { color: var(--color-blue-light); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: var(--space-sm);
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .offices-split { grid-template-columns: 1fr; }
  .project-grid { grid-template-columns: repeat(2, 1fr); }
  .listing-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-toggle { display: flex; }

  .site-header nav {
    display: none;
    position: fixed;
    inset: 0;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 0;
    padding: 6.5rem 2rem 2rem;
    overflow-y: auto;
    z-index: 99;
  }
  .site-header.nav-open nav { display: flex; }
  .site-header nav a {
    color: var(--color-ink) !important;
    font-size: 1.1rem;
    width: 100%;
    padding: 1rem 0;
    border-bottom: 1px solid var(--color-gray-light);
  }
  .site-header nav a.btn {
    border: 1px solid var(--color-ink);
    text-align: center;
    margin-top: 1.5rem;
    padding: 0.9rem 0;
  }
  .nav-dropdown { width: 100%; }
  .nav-dropdown > a::after { display: none; }
  .nav-dropdown .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    margin-top: 0;
    min-width: 0;
    background: transparent;
  }
  .nav-dropdown .dropdown-menu a {
    font-size: 0.9rem;
    color: var(--color-gray) !important;
    padding: 0.85rem 0 0.85rem 1rem;
    border-bottom: 1px dashed var(--color-gray-light);
  }
}
@media (max-width: 700px) {
  .project-gallery { grid-template-columns: 1fr !important; }
}
@media (max-width: 640px) {
  .listing-grid { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .project-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}