/* ════════════════════════════════════════════════════════════════
   COMPONENTS — nav, buttons, cards, forms
   ════════════════════════════════════════════════════════════════ */

/* ───────────────────────────────────────────────────────────────
   1. NAVIGATION
   ─────────────────────────────────────────────────────────────── */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  padding: 24px var(--section-pad-h-tight);
  background: transparent;
  transition: background var(--transition-base), padding var(--transition-base), border-color var(--transition-base);
  border-bottom: 1px solid transparent;
}

.nav--scrolled {
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  padding: 18px var(--section-pad-h-tight);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max);
  margin: 0 auto;
}

.nav__logo {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: var(--weight-regular);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-white);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: opacity var(--transition-fast);
}

.nav__logo:hover { opacity: 0.7; }

.nav__logo-mark {
  display: inline-block;
  width: 4px;
  height: 4px;
  background: currentColor;
  border-radius: 50%;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: clamp(20px, 2.4vw, 38px);
}

.nav__link {
  font-size: 11px;
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-ultra);
  text-transform: uppercase;
  color: var(--color-white);
  position: relative;
  padding: 4px 0;
  transition: opacity var(--transition-fast), letter-spacing var(--transition-base);
  opacity: 0.78;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav__link:hover {
  opacity: 1;
  letter-spacing: 0.26em;
}
.nav__link:hover::after { transform: scaleX(1); }

.nav__link--active {
  opacity: 1;
}
.nav__link--active::after { transform: scaleX(1); }

.nav__menu-btn {
  display: none;
  width: 36px;
  height: 36px;
  position: relative;
  z-index: calc(var(--z-modal) + 1);
}

.nav__menu-btn span {
  position: absolute;
  left: 6px;
  right: 6px;
  height: 1px;
  background: var(--color-white);
  transition: transform var(--transition-base), opacity var(--transition-fast), top var(--transition-base);
}
.nav__menu-btn span:nth-child(1) { top: 13px; }
.nav__menu-btn span:nth-child(2) { top: 22px; }

.nav__menu-btn.is-open span:nth-child(1) {
  top: 17px;
  transform: rotate(45deg);
}
.nav__menu-btn.is-open span:nth-child(2) {
  top: 17px;
  transform: rotate(-45deg);
}

/* ── Mobile menu overlay ── */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: var(--color-black);
  z-index: var(--z-modal);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s ease;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 80px 32px;
}

.nav-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.nav-overlay__links {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding-left: 20px;
}

.nav-overlay__link {
  font-family: var(--font-display);
  font-size: clamp(36px, 9vw, 72px);
  font-weight: var(--weight-light);
  color: var(--color-white);
  letter-spacing: var(--tracking-tight);
  line-height: 1;
  display: inline-flex;
  align-items: center;
  gap: 18px;
  transition: opacity var(--transition-fast), padding-left var(--transition-base);
  opacity: 0.8;
  transform: translateY(20px);
  opacity: 0;
}

.nav-overlay.is-open .nav-overlay__link {
  animation: navItemIn 0.7s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.nav-overlay.is-open .nav-overlay__link:nth-child(1) { animation-delay: 0.05s; }
.nav-overlay.is-open .nav-overlay__link:nth-child(2) { animation-delay: 0.10s; }
.nav-overlay.is-open .nav-overlay__link:nth-child(3) { animation-delay: 0.15s; }
.nav-overlay.is-open .nav-overlay__link:nth-child(4) { animation-delay: 0.20s; }
.nav-overlay.is-open .nav-overlay__link:nth-child(5) { animation-delay: 0.25s; }
.nav-overlay.is-open .nav-overlay__link:nth-child(6) { animation-delay: 0.30s; }
.nav-overlay.is-open .nav-overlay__link:nth-child(7) { animation-delay: 0.35s; }
.nav-overlay.is-open .nav-overlay__link:nth-child(8) { animation-delay: 0.40s; }

@keyframes navItemIn {
  to { opacity: 1; transform: translateY(0); }
}

.nav-overlay__link:hover { padding-left: 12px; opacity: 1; }

.nav-overlay__num {
  font-family: var(--font-body);
  font-size: 11px;
  letter-spacing: 0.2em;
  font-weight: var(--weight-medium);
  opacity: 0.4;
  align-self: flex-start;
  margin-top: 14px;
}

.nav-overlay__footer {
  margin-top: 60px;
  padding-left: 20px;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: var(--weight-medium);
  color: rgba(255, 255, 255, 0.4);
}

/* ───────────────────────────────────────────────────────────────
   2. BUTTONS
   ─────────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 16px 38px;
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-ultra);
  text-transform: uppercase;
  border: 1px solid currentColor;
  background: transparent;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: color var(--transition-base);
  white-space: nowrap;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: currentColor;
  transform: translateY(101%);
  transition: transform 0.5s cubic-bezier(0.65, 0, 0.35, 1);
  z-index: 0;
}

.btn span,
.btn .arrow { position: relative; z-index: 1; }

.btn:hover::before { transform: translateY(0); }

.btn--on-black {
  color: var(--color-white);
}
.btn--on-black:hover {
  color: var(--color-black);
}

.btn--on-white {
  color: var(--color-black);
}
.btn--on-white:hover {
  color: var(--color-white);
}

.btn--filled-black {
  background: var(--color-black);
  color: var(--color-white);
  border-color: var(--color-black);
}
.btn--filled-black::before {
  background: var(--color-white);
}
.btn--filled-black:hover { color: var(--color-black); }

.btn .arrow {
  display: inline-block;
  width: 14px;
  height: 1px;
  background: currentColor;
  position: relative;
  transition: width 0.3s ease;
}
.btn .arrow::after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  width: 6px;
  height: 6px;
  border-top: 1px solid currentColor;
  border-right: 1px solid currentColor;
  transform: translateY(-50%) rotate(45deg);
}
.btn:hover .arrow { width: 22px; }

/* link button (text only) */
.btn-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-ultra);
  text-transform: uppercase;
  padding: 6px 0;
  position: relative;
  transition: gap var(--transition-base);
}

.btn-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform-origin: right;
  transform: scaleX(1);
  transition: transform 0.5s cubic-bezier(0.65, 0, 0.35, 1);
}

.btn-link:hover { gap: 16px; }
.btn-link:hover::after {
  transform-origin: left;
  transform: scaleX(0);
  animation: linkUnderline 0.7s cubic-bezier(0.65, 0, 0.35, 1) forwards;
}

@keyframes linkUnderline {
  0% { transform-origin: right; transform: scaleX(1); }
  50% { transform-origin: right; transform: scaleX(0); }
  51% { transform-origin: left; transform: scaleX(0); }
  100% { transform-origin: left; transform: scaleX(1); }
}

/* ───────────────────────────────────────────────────────────────
   3. PROJECT CARD
   ─────────────────────────────────────────────────────────────── */

.project-card {
  position: relative;
  display: block;
  overflow: hidden;
  cursor: pointer;
  background: var(--color-near-black);
}

.project-card__media {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
}

.project-card__media img,
.project-card__media video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: var(--filter-bw);
  transition: transform 1.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.project-card:hover .project-card__media img,
.project-card:hover .project-card__media video {
  transform: scale(1.06);
}

.project-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top,
    rgba(0,0,0,0.95) 0%,
    rgba(0,0,0,0.6) 35%,
    rgba(0,0,0,0.05) 75%);
  z-index: 1;
}

.project-card__content {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 28px 28px 30px;
  z-index: 2;
}

.project-card__num {
  font-size: 11px;
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-ultra);
  color: rgba(255,255,255,0.4);
  margin-bottom: 12px;
  display: block;
}

.project-card__category {
  font-size: 10px;
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-ultra);
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
  margin-bottom: 10px;
}

.project-card__title {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.4vw, 32px);
  font-weight: var(--weight-light);
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--color-white);
  margin-bottom: 14px;
}

.project-card__excerpt {
  font-size: 12px;
  line-height: 1.6;
  font-weight: var(--weight-light);
  color: rgba(255,255,255,0.6);
  max-width: 90%;
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  transition: opacity 0.5s ease, max-height 0.5s ease, margin 0.4s ease;
}

.project-card:hover .project-card__excerpt {
  opacity: 1;
  max-height: 70px;
  margin-bottom: 14px;
}

.project-card__cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 10px;
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-ultra);
  text-transform: uppercase;
  color: var(--color-white);
  padding-bottom: 4px;
  border-bottom: 1px solid rgba(255,255,255,0.4);
  transition: gap 0.3s ease, border-color 0.3s ease;
}

.project-card:hover .project-card__cta {
  gap: 16px;
  border-bottom-color: var(--color-white);
}

.project-card__line {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--color-white);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.7s cubic-bezier(0.65, 0, 0.35, 1);
  z-index: 3;
}

.project-card:hover .project-card__line {
  transform: scaleX(1);
  transform-origin: left;
}

/* ───────────────────────────────────────────────────────────────
   4. STAT BLOCK
   ─────────────────────────────────────────────────────────────── */

.stat {
  text-align: center;
}

.stat__number {
  font-family: var(--font-display);
  font-size: clamp(48px, 7vw, 96px);
  font-weight: var(--weight-light);
  line-height: 1;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
  display: block;
}

.stat__label {
  font-size: 11px;
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-ultra);
  text-transform: uppercase;
  opacity: 0.6;
}

/* ───────────────────────────────────────────────────────────────
   5. FORM
   ─────────────────────────────────────────────────────────────── */

.field {
  position: relative;
  margin-bottom: 36px;
}

.field input,
.field textarea {
  width: 100%;
  padding: 14px 0;
  background: transparent;
  border: none;
  border-bottom: 1px solid rgba(255,255,255,0.18);
  color: var(--color-white);
  font-size: 14px;
  font-weight: var(--weight-light);
  letter-spacing: 0.02em;
  outline: none;
  transition: border-color 0.3s;
  resize: none;
  font-family: inherit;
}

.field--on-light input,
.field--on-light textarea {
  color: var(--color-black);
  border-bottom-color: rgba(0,0,0,0.18);
}

.field input:focus,
.field textarea:focus {
  border-bottom-color: var(--color-white);
}

.field--on-light input:focus,
.field--on-light textarea:focus {
  border-bottom-color: var(--color-black);
}

.field label {
  position: absolute;
  left: 0;
  top: 14px;
  font-size: 11px;
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-ultra);
  text-transform: uppercase;
  pointer-events: none;
  transition: top 0.3s ease, font-size 0.3s ease, opacity 0.3s ease;
  opacity: 0.5;
}

.field input:focus + label,
.field input:not(:placeholder-shown) + label,
.field textarea:focus + label,
.field textarea:not(:placeholder-shown) + label {
  top: -8px;
  font-size: 9px;
  opacity: 1;
}

/* ───────────────────────────────────────────────────────────────
   6. FOOTER
   ─────────────────────────────────────────────────────────────── */

.footer {
  background: var(--color-black);
  color: var(--color-white);
  padding: var(--space-2xl) var(--section-pad-h) 40px;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.footer__top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 60px;
  padding-bottom: 80px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer__brand-name {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 64px);
  font-weight: var(--weight-light);
  line-height: 0.95;
  letter-spacing: var(--tracking-tight);
  margin-bottom: 18px;
}

.footer__tagline {
  font-size: 12px;
  font-weight: var(--weight-light);
  letter-spacing: 0.04em;
  color: rgba(255,255,255,0.55);
  max-width: 380px;
  line-height: 1.7;
}

.footer__col-title {
  font-size: 10px;
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-ultra);
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
  margin-bottom: 22px;
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer__list a {
  font-size: 13px;
  font-weight: var(--weight-light);
  color: rgba(255,255,255,0.85);
  transition: opacity 0.3s, transform 0.3s;
  display: inline-block;
}

.footer__list a:hover {
  transform: translateX(4px);
  opacity: 1;
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  font-size: 10px;
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-ultra);
  text-transform: uppercase;
  color: rgba(255,255,255,0.35);
}

@media (max-width: 768px) {
  .footer__top {
    grid-template-columns: 1fr;
    gap: 50px;
    padding-bottom: 50px;
  }
  .footer__bottom {
    flex-direction: column;
    gap: 18px;
    text-align: center;
  }
}

/* ───────────────────────────────────────────────────────────────
   7. SCROLL INDICATOR
   ─────────────────────────────────────────────────────────────── */

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  color: var(--color-white);
  z-index: 3;
}

.scroll-indicator__line {
  width: 1px;
  height: 50px;
  background: var(--color-white);
  position: relative;
  overflow: hidden;
  opacity: 0.3;
}

.scroll-indicator__line::after {
  content: '';
  position: absolute;
  top: -50%;
  left: 0;
  width: 100%;
  height: 50%;
  background: var(--color-white);
  animation: scrollIndicator 2.4s cubic-bezier(0.65, 0, 0.35, 1) infinite;
}

@keyframes scrollIndicator {
  0% { top: -50%; }
  100% { top: 100%; }
}

.scroll-indicator__label {
  font-size: 9px;
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-ultra);
  text-transform: uppercase;
  opacity: 0.6;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}

/* ───────────────────────────────────────────────────────────────
   8. PAGE HEADER (interior pages)
   ─────────────────────────────────────────────────────────────── */

.page-header {
  background: var(--color-black);
  color: var(--color-white);
  padding: clamp(140px, 18vw, 220px) var(--section-pad-h) clamp(60px, 9vw, 120px);
  position: relative;
  overflow: hidden;
}

.page-header__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.page-header__eyebrow {
  font-size: 11px;
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-ultra);
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin-bottom: 24px;
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.page-header__eyebrow::before {
  content: '';
  width: 32px;
  height: 1px;
  background: currentColor;
  opacity: 0.6;
}

.page-header__title {
  font-family: var(--font-display);
  font-size: clamp(60px, 10vw, 160px);
  font-weight: var(--weight-light);
  line-height: 0.92;
  letter-spacing: -0.035em;
  color: var(--color-white);
}

.page-header__sub {
  margin-top: 28px;
  font-size: var(--text-body);
  font-weight: var(--weight-light);
  line-height: 1.7;
  max-width: 540px;
  color: rgba(255,255,255,0.7);
}

/* subtle backdrop letter mark behind header */
.page-header__bg-letter {
  position: absolute;
  bottom: -20%;
  right: -3%;
  font-family: var(--font-display);
  font-size: clamp(280px, 38vw, 600px);
  font-weight: var(--weight-thin);
  line-height: 1;
  color: rgba(255,255,255,0.025);
  pointer-events: none;
  user-select: none;
  z-index: 1;
  letter-spacing: -0.05em;
}

/* ───────────────────────────────────────────────────────────────
   9. RESPONSIVE NAV
   ─────────────────────────────────────────────────────────────── */

@media (max-width: 960px) {
  .nav__links { display: none; }
  .nav__menu-btn { display: block; }
}

/* ───────────────────────────────────────────────────────────────
   10. LIGHTBOX
   ─────────────────────────────────────────────────────────────── */

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.97);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

.lightbox.is-open {
  opacity: 1;
  pointer-events: auto;
}

.lightbox__inner {
  max-width: 90vw;
  max-height: 90vh;
  position: relative;
}

.lightbox__img {
  max-width: 100%;
  max-height: 90vh;
  object-fit: contain;
  filter: var(--filter-bw);
}

.lightbox__close {
  position: absolute;
  top: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  cursor: pointer;
  z-index: 2;
  transition: border-color 0.3s, transform 0.3s;
}

.lightbox__close:hover {
  border-color: var(--color-white);
  transform: rotate(90deg);
}

.lightbox__close span {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 1px;
  background: var(--color-white);
}
.lightbox__close span:nth-child(1) { transform: translate(-50%, -50%) rotate(45deg); }
.lightbox__close span:nth-child(2) { transform: translate(-50%, -50%) rotate(-45deg); }