/* Prime Core Constructions — shared styles
   Brand tokens: core #111111, field #F3F6F1, material #DCE8DD, graph #637268
   Type: Cormorant Garamond (serif/display) + Inter (sans/utility) */

html {
  scroll-behavior: smooth;
}

body {
  background-color: #F3F6F1;
  color: #111111;
  font-family: 'Inter', ui-sans-serif, system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background-color: #111111;
  color: #F3F6F1;
}

/* ---------- Focus states (accessibility) ---------- */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid #637268;
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------- Eyebrow label (from brand guideline "01 / SECTION" pattern) ---------- */
.eyebrow {
  font-family: 'Inter', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: #637268;
}

.font-serif-display {
  font-family: 'Cormorant Garamond', ui-serif, Georgia, serif;
}

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1), transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity, transform;
}
.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1.in-view { transition-delay: 0.1s; }
.reveal-delay-2.in-view { transition-delay: 0.2s; }
.reveal-delay-3.in-view { transition-delay: 0.3s; }
.reveal-delay-4.in-view { transition-delay: 0.4s; }
.reveal-delay-5.in-view { transition-delay: 0.5s; }

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  html { scroll-behavior: auto; }
}

/* ---------- Ken Burns hero image ---------- */
@keyframes kenburns {
  0% { transform: scale(1.08) translate3d(0,0,0); }
  100% { transform: scale(1.16) translate3d(-1%, -1%, 0); }
}
.kenburns {
  animation: kenburns 18s ease-out forwards;
}

/* ---------- Nav underline link ---------- */
.nav-link {
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 1px;
  background-color: #111111;
  transition: width 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}
.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* ---------- Dropdown ---------- */
.dropdown-panel {
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
}
.dropdown:hover .dropdown-panel,
.dropdown:focus-within .dropdown-panel,
.dropdown-panel.force-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* ---------- Buttons ---------- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 2rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border-radius: 9999px;
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.35s ease, background-color 0.35s ease, color 0.35s ease, border-color 0.35s ease;
  white-space: nowrap;
}
.btn-primary {
  background-color: #111111;
  color: #F3F6F1;
  border: 1px solid #111111;
}
.btn-primary:hover {
  background-color: #637268;
  border-color: #637268;
  box-shadow: 0 12px 28px -10px rgba(17,17,17,0.45);
  transform: translateY(-2px);
}
.btn-outline {
  background-color: transparent;
  color: #111111;
  border: 1px solid #111111;
}
.btn-outline:hover {
  background-color: #111111;
  color: #F3F6F1;
  transform: translateY(-2px);
}
.btn-outline-light {
  background-color: transparent;
  color: #F3F6F1;
  border: 1px solid rgba(243,246,241,0.55);
}
.btn-outline-light:hover {
  background-color: #F3F6F1;
  color: #111111;
  border-color: #F3F6F1;
  transform: translateY(-2px);
}
.btn-light {
  background-color: #F3F6F1;
  color: #111111;
  border: 1px solid #F3F6F1;
}
.btn-light:hover {
  background-color: transparent;
  color: #F3F6F1;
  border-color: rgba(243,246,241,0.55);
  transform: translateY(-2px);
}

/* ---------- Card image zoom on hover ---------- */
.img-zoom {
  overflow: hidden;
}
.img-zoom img {
  transition: transform 0.7s cubic-bezier(0.22, 1, 0.36, 1), filter 0.7s ease;
}
.img-zoom:hover img {
  transform: scale(1.08);
}

/* ---------- Card lift ---------- */
.card-lift {
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.4s ease, border-color 0.4s ease;
}
.card-lift:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 48px -20px rgba(17,17,17,0.25);
}

/* ---------- Header ---------- */
#site-header {
  transition: box-shadow 0.35s ease, background-color 0.35s ease, padding 0.35s ease;
}
#site-header.scrolled {
  box-shadow: 0 8px 30px -18px rgba(17,17,17,0.35);
}

/* ---------- Hamburger icon (morphs to X) ---------- */
.hamburger {
  position: relative;
  display: inline-block;
  width: 22px;
  height: 16px;
}
.hamburger-line {
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.6px;
  background-color: #111111;
  border-radius: 1px;
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.25s ease, top 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}
.hamburger-line:nth-child(1) { top: 0; }
.hamburger-line:nth-child(2) { top: 7px; }
.hamburger-line:nth-child(3) { top: 14px; }
#menu-toggle.is-open .hamburger-line:nth-child(1) { top: 7px; transform: rotate(45deg); }
#menu-toggle.is-open .hamburger-line:nth-child(2) { opacity: 0; }
#menu-toggle.is-open .hamburger-line:nth-child(3) { top: 7px; transform: rotate(-45deg); }

/* ---------- Mobile menu ---------- */
#mobile-menu {
  transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.4s ease;
  transform: translateX(100%);
}
#mobile-menu.open {
  transform: translateX(0);
}
.mobile-link {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
#mobile-menu.open .mobile-link {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Marquee strip ---------- */
.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee 32s linear infinite;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- Number badges ---------- */
.step-num {
  font-family: 'Cormorant Garamond', serif;
  font-weight: 600;
}

/* ---------- Divider line grow-in ---------- */
.line-grow {
  transform-origin: left;
  transform: scaleX(0);
  transition: transform 1s cubic-bezier(0.22, 1, 0.36, 1);
}
.line-grow.in-view {
  transform: scaleX(1);
}

/* Utility: balanced headings */
.text-balance { text-wrap: balance; }

/* ---------- Project filter buttons ---------- */
.filter-btn {
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}
.filter-btn.is-active {
  background-color: #111111;
  color: #F3F6F1;
  border-color: #111111;
}

/* Form fields */
.field-input {
  width: 100%;
  background-color: #FFFFFF;
  border: 1px solid #DCE8DD;
  padding: 0.9rem 1.1rem;
  font-size: 0.95rem;
  color: #111111;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.field-input:focus {
  outline: none;
  border-color: #637268;
  box-shadow: 0 0 0 3px rgba(99,114,104,0.15);
}
.field-input::placeholder {
  color: #9aa79f;
}