/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --black: #0a0a0a;
  --white: #fafafa;
  --grey-100: #f4f4f4;
  --grey-300: #d4d4d4;
  --grey-500: #888888;
  --grey-700: #444444;

  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;

  --nav-h: 72px;
  --container: 1180px;
  --section-gap: 128px;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--white);
  color: var(--black);
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

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


/* ============================================================
   TYPOGRAPHY UTILITIES
   ============================================================ */
.section-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--grey-500);
  margin-bottom: 1.25rem;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--black);
}


/* ============================================================
   LAYOUT
   ============================================================ */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 5vw, 3rem);
}

.section {
  padding: var(--section-gap) 0;
}

.section-header {
  margin-bottom: 4rem;
}


/* ============================================================
   ANIMATIONS
   ============================================================ */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.8s var(--ease-out) forwards;
}

.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.services-grid .reveal:nth-child(1) { transition-delay: 0.05s; }
.services-grid .reveal:nth-child(2) { transition-delay: 0.12s; }
.services-grid .reveal:nth-child(3) { transition-delay: 0.19s; }
.services-grid .reveal:nth-child(4) { transition-delay: 0.26s; }

.cases-grid .reveal:nth-child(1) { transition-delay: 0.05s; }
.cases-grid .reveal:nth-child(2) { transition-delay: 0.14s; }
.cases-grid .reveal:nth-child(3) { transition-delay: 0.23s; }

.experience-list .reveal:nth-child(1) { transition-delay: 0.05s; }
.experience-list .reveal:nth-child(2) { transition-delay: 0.12s; }
.experience-list .reveal:nth-child(3) { transition-delay: 0.19s; }

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


/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  border-radius: 2px;
  cursor: pointer;
  transition: background 0.25s var(--ease-out), color 0.25s var(--ease-out), transform 0.2s var(--ease-out), box-shadow 0.25s var(--ease-out);
  border: 1.5px solid transparent;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: var(--black);
  color: var(--white);
  border-color: var(--black);
}

.btn-primary:hover {
  background: var(--grey-700);
  border-color: var(--grey-700);
}

.btn-ghost {
  background: transparent;
  color: var(--black);
  border-color: var(--grey-300);
}

.btn-ghost:hover {
  border-color: var(--black);
}

.btn-large {
  padding: 1.1rem 2.6rem;
  font-size: 0.9rem;
}


/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(1.5rem, 5vw, 3rem);
  transition: background 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out);
}

.nav.scrolled {
  background: rgba(250, 250, 250, 0.96);
  box-shadow: 0 1px 0 var(--grey-300);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-logo {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--black);
  transition: opacity 0.2s;
}

.nav-logo:hover {
  opacity: 0.6;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-links a {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--grey-700);
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--black);
}

.nav-cta {
  padding: 0.6rem 1.4rem;
  border: 1.5px solid var(--grey-300) !important;
  border-radius: 2px;
  color: var(--black) !important;
  transition: border-color 0.2s, background 0.2s, color 0.2s !important;
}

.nav-cta:hover {
  border-color: var(--black) !important;
  background: var(--black);
  color: var(--white) !important;
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  width: 32px;
  height: 32px;
}

.nav-hamburger span {
  display: block;
  height: 1.5px;
  background: var(--black);
  transition: transform 0.3s var(--ease-out), opacity 0.3s;
}

.nav-hamburger.open span:first-child {
  transform: translateY(6.5px) rotate(45deg);
}

.nav-hamburger.open span:last-child {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 90;
  background: var(--white);
  padding: calc(var(--nav-h) + 2rem) 2rem 2rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease-out);
}

.mobile-menu.open {
  opacity: 1;
  pointer-events: all;
}

.mobile-menu ul {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.mobile-menu a {
  font-size: 2rem;
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--black);
}


/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: 100svh;
  display: grid;
  grid-template-columns: 55fr 45fr;
  position: relative;
  overflow: hidden;
}

.hero-inner {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: calc(var(--nav-h) + 4rem) clamp(2rem, 4vw, 4rem) 6rem clamp(1.5rem, 5vw, 5rem);
  max-width: 700px;
}

.hero-image {
  position: relative;
  overflow: hidden;
}

.hero-image img {
  position: absolute;
  top: var(--nav-h);
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: calc(100% - var(--nav-h));
  object-fit: cover;
  object-position: center 15%;
  filter: grayscale(100%);
  transition: transform 0.8s var(--ease-out);
}

.hero-image::after {
  content: '';
  position: absolute;
  top: var(--nav-h);
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to right, var(--white) 0%, transparent 15%),
              linear-gradient(to top, var(--white) 0%, transparent 8%);
  pointer-events: none;
  z-index: 1;
}

.hero-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--grey-500);
  margin-bottom: 2rem;
}

.hero-headline {
  font-family: var(--font-serif);
  font-size: clamp(4rem, 10vw, 8.5rem);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.025em;
  color: var(--black);
  margin-bottom: 2.5rem;
}

.hero-sub {
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  font-weight: 400;
  color: var(--grey-700);
  max-width: 480px;
  margin-bottom: 3rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: clamp(1.5rem, 5vw, 3rem);
}

.hero-scroll-hint span {
  display: block;
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--black), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 1; transform: scaleY(1); }
  50% { opacity: 0.3; transform: scaleY(0.8); }
}


/* ============================================================
   ABOUT
   ============================================================ */
.about {
  background: var(--grey-100);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 4rem 6rem;
  align-items: start;
}

.about-body {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--grey-700);
  margin-bottom: 1.5rem;
}

.about-stats {
  display: flex;
  gap: 3rem;
  margin-top: 3rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--grey-300);
}

.stat-number {
  display: block;
  font-family: var(--font-serif);
  font-size: 2.8rem;
  font-weight: 700;
  line-height: 1;
  color: var(--black);
  margin-bottom: 0.4rem;
}

.stat-label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--grey-500);
}


/* ============================================================
   SERVICES
   ============================================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--grey-300);
  border: 1px solid var(--grey-300);
}

.service-card {
  background: var(--white);
  padding: 3rem;
  transition: background 0.3s var(--ease-out);
}

.service-card:hover {
  background: var(--black);
}

.service-card:hover .service-num,
.service-card:hover .service-title,
.service-card:hover .service-desc {
  color: var(--white);
}

.service-num {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--grey-500);
  margin-bottom: 1.5rem;
  display: block;
  transition: color 0.3s;
}

.service-title {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--black);
  margin-bottom: 1rem;
  transition: color 0.3s;
}

.service-desc {
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--grey-700);
  transition: color 0.3s;
}


/* ============================================================
   EXPERIENCE
   ============================================================ */
.experience {
  background: var(--grey-100);
}

.experience-list {
  display: flex;
  flex-direction: column;
}

.exp-item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 2rem 4rem;
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--grey-300);
  align-items: start;
}

.exp-item:first-child {
  border-top: 1px solid var(--grey-300);
}

.exp-period {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--grey-500);
  padding-top: 0.3rem;
}

.exp-role {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--black);
  margin-bottom: 0.3rem;
}

.exp-org {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--grey-500);
  margin-bottom: 0.8rem;
}

.exp-desc {
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--grey-700);
}


/* ============================================================
   CASE STUDIES
   ============================================================ */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--grey-300);
  border: 1px solid var(--grey-300);
}

.case-card {
  background: var(--white);
  padding: 2.8rem;
  display: flex;
  flex-direction: column;
}

.case-tag {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--grey-500);
  margin-bottom: 1.5rem;
}

.case-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--black);
  margin-bottom: 1rem;
  flex: 1;
}

.case-desc {
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--grey-700);
  margin-bottom: 2rem;
}

.case-outcome {
  border-top: 1px solid var(--grey-300);
  padding-top: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.outcome-label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--grey-500);
}

.outcome-text {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--black);
}


/* ============================================================
   CASE STUDIES — two-column variant
   ============================================================ */
.cases-grid--two {
  grid-template-columns: repeat(2, 1fr);
}


/* ============================================================
   THINKING
   ============================================================ */
.thinking {
  background: var(--grey-100);
}

.thinking-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 4rem 6rem;
  align-items: start;
}

.thinking-intro {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--grey-700);
  margin-top: 1.5rem;
  margin-bottom: 1rem;
}

.thinking-coming {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--grey-500);
}

.interest-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--grey-300);
  border: 1px solid var(--grey-300);
}

.interest-card {
  background: var(--grey-100);
  padding: 2rem;
  transition: background 0.3s var(--ease-out);
}

.interest-card:hover {
  background: var(--white);
}

.interest-num {
  display: block;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--grey-500);
  margin-bottom: 1rem;
  transition: color 0.3s;
}

.interest-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--black);
  margin-bottom: 0.6rem;
}

.interest-desc {
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--grey-700);
}

/* Stagger thinking cards */
.interest-grid .reveal:nth-child(1) { transition-delay: 0.05s; }
.interest-grid .reveal:nth-child(2) { transition-delay: 0.12s; }
.interest-grid .reveal:nth-child(3) { transition-delay: 0.19s; }
.interest-grid .reveal:nth-child(4) { transition-delay: 0.26s; }


/* ============================================================
   MEDIA
   ============================================================ */
.media-list {
  display: flex;
  flex-direction: column;
}

.media-item {
  display: grid;
  grid-template-columns: 44px 90px 1fr 24px;
  gap: 1rem 1.5rem;
  align-items: center;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--grey-300);
  text-decoration: none;
  color: inherit;
  transition: opacity 0.2s;
}

.media-item:first-child {
  border-top: 1px solid var(--grey-300);
}

.media-item:not(.media-item--no-link):hover {
  opacity: 0.6;
}

.media-item--no-link {
  grid-template-columns: 44px 90px 1fr;
  cursor: default;
}

.media-logo {
  width: 36px;
  height: 36px;
  object-fit: contain;
  border-radius: 6px;
  display: block;
}

.media-logo--fallback {
  width: 36px;
  height: 36px;
  background: var(--grey-300);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--grey-700);
}

.media-type {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--grey-500);
}

.media-title {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--black);
  margin-bottom: 0.2rem;
}

.media-source {
  font-size: 0.8rem;
  color: var(--grey-500);
}

.media-arrow {
  font-size: 1rem;
  color: var(--grey-500);
  justify-self: end;
}

/* Stagger media items */
.media-list .reveal:nth-child(1) { transition-delay: 0.04s; }
.media-list .reveal:nth-child(2) { transition-delay: 0.1s; }
.media-list .reveal:nth-child(3) { transition-delay: 0.16s; }
.media-list .reveal:nth-child(4) { transition-delay: 0.22s; }


/* ============================================================
   CONTACT
   ============================================================ */
.contact {
  background: var(--black);
}

.contact-inner {
  max-width: 680px;
}

.contact .section-label {
  color: var(--grey-500);
}

.contact-title {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 6vw, 5.5rem);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--white);
  margin-bottom: 2rem;
}

.contact-sub {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--grey-500);
  margin-bottom: 3rem;
}

.contact .btn-primary {
  background: var(--white);
  color: var(--black);
  border-color: var(--white);
  margin-bottom: 2rem;
}

.contact .btn-primary:hover {
  background: var(--grey-100);
  border-color: var(--grey-100);
}

.contact-links {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--grey-500);
}

.contact-links a {
  transition: color 0.2s;
}

.contact-links a:hover {
  color: var(--white);
}

.divider {
  color: var(--grey-700);
}


/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--black);
  border-top: 1px solid #1a1a1a;
  padding: 2rem 0;
}

.footer-copy {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--grey-700);
  letter-spacing: 0.04em;
}


/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .cases-grid,
  .cases-grid--two {
    grid-template-columns: 1fr;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .thinking-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 768px) {
  :root {
    --section-gap: 80px;
  }

  .nav-links {
    display: none;
  }

  .nav-hamburger {
    display: flex;
  }

  .mobile-menu {
    display: block;
  }

  .hero-headline {
    font-size: clamp(3.5rem, 14vw, 5.5rem);
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .exp-item {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .about-stats {
    gap: 2rem;
  }

  .cases-grid,
  .cases-grid--two {
    grid-template-columns: 1fr;
  }

  .interest-grid {
    grid-template-columns: 1fr;
  }

  .media-item,
  .media-item--no-link {
    grid-template-columns: 36px 1fr 20px;
    gap: 0.75rem 1rem;
  }

  .media-item--no-link {
    grid-template-columns: 36px 1fr;
  }

  .hero {
    grid-template-columns: 1fr;
  }

  .hero-image {
    display: none;
  }
}

@media (max-width: 480px) {
  :root {
    --section-gap: 60px;
  }

  .hero-headline {
    font-size: clamp(3rem, 16vw, 4.5rem);
  }

  .service-card,
  .case-card {
    padding: 2rem;
  }

  .about-stats {
    flex-direction: column;
    gap: 1.5rem;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    text-align: center;
    justify-content: center;
  }
}