/* Zempō Design — base styles */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;1,400&family=Jost:wght@300;400;500&display=swap');

:root {
  --color-bg: #f7f5f0;
  --color-bg-alt: #efece4;
  --color-ink: #1f231f;
  --color-ink-soft: #4a4f47;
  --color-accent: #5c6b4f;
  --color-line: #d8d4c8;
  --color-white: #ffffff;

  --font-display: 'Cormorant Garamond', 'Times New Roman', serif;
  --font-sans: 'Jost', 'Helvetica Neue', Arial, sans-serif;

  --nav-h: 150px;
  --container: 1440px;
}

.brand-mark {
  font-family: 'Cormorant Garamond', 'Times New Roman', serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-weight: 300;
  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);
  margin: 0 auto;
  padding: 0 48px;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: 0.01em;
  line-height: 1.15;
}

.eyebrow {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-accent);
  display: block;
  margin-bottom: 18px;
}

/* ---------- Nav ---------- */

.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  z-index: 100;
  background: rgba(247, 245, 240, 0.97);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 var(--color-line);
  transform: translateY(0);
  transition: transform .35s ease, box-shadow .3s ease;
}

.site-header.is-hidden {
  transform: translateY(-100%);
}

.site-header.is-scrolled {
  box-shadow: 0 2px 10px rgba(31, 35, 31, 0.08);
}

.back-to-top {
  position: fixed;
  right: 28px;
  bottom: 28px;
  z-index: 90;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 1px solid var(--color-ink);
  background: var(--color-bg);
  color: var(--color-ink);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity .3s ease, transform .3s ease, background .3s ease, color .3s ease;
  box-shadow: 0 4px 14px rgba(31, 35, 31, 0.15);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-ink);
  color: var(--color-bg);
}

@media (max-width: 720px) {
  .back-to-top { right: 18px; bottom: 18px; width: 46px; height: 46px; }
}

.nav-inner {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-block { display: flex; align-items: center; }

.nav-right {
  display: flex;
  align-items: center;
  gap: 44px;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.6rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.logo span { color: var(--color-accent); }

.logo-img {
  height: 128px;
  width: auto;
  display: block;
}

.footer-top .logo-img { height: 64px; filter: none; margin: 0 0 20px; }

@media (max-width: 720px) {
  .logo-img { height: 68px; }
}

.nav-links {
  display: flex;
  gap: 38px;
  list-style: none;
}

.nav-links a {
  font-size: 0.86rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  position: relative;
  padding-bottom: 4px;
}

.nav-links a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 1px;
  background: currentColor;
  transition: width .3s ease;
}

.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

.lang-toggle {
  border: 1px solid var(--color-ink);
  background: none;
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  padding: 10px 18px;
  cursor: pointer;
  transition: background .3s ease, color .3s ease;
  flex: none;
}

.lang-toggle:hover { background: var(--color-ink); color: var(--color-bg); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 24px;
  height: 1px;
  background: var(--color-ink);
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  margin-top: var(--nav-h);
  height: calc(100vh - var(--nav-h));
  min-height: 600px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  color: var(--color-white);
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(20,24,18,0.15) 0%, rgba(20,24,18,0.55) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding-top: 110px;
  padding-bottom: 100px;
}

.hero-content h1 {
  font-size: clamp(2.2rem, 4.6vw, 4.2rem);
  font-weight: 300;
  max-width: 900px;
}

.hero-content p {
  margin-top: 20px;
  max-width: 480px;
  font-size: 1.05rem;
  color: rgba(255,255,255,0.85);
}

.scroll-cue {
  position: absolute;
  right: 48px;
  bottom: 40px;
  z-index: 1;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-white);
  writing-mode: vertical-rl;
  display: flex;
  align-items: center;
  gap: 12px;
}

.scroll-cue::after {
  content: '';
  width: 1px;
  height: 60px;
  background: rgba(255,255,255,0.6);
}

/* ---------- Sections ---------- */

section { padding: 140px 0; }

.section-tight { padding: 90px 0; }

.section-head {
  max-width: 720px;
  margin-bottom: 64px;
}

.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

.section-head h2 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 300;
}

.lede {
  font-size: 1.15rem;
  color: var(--color-ink-soft);
  margin-top: 22px;
}

.bg-alt { background: var(--color-bg-alt); }
.bg-ink { background: var(--color-ink); color: var(--color-bg); }
.bg-ink .eyebrow { color: #a9b79a; }

/* ---------- Intro split ---------- */

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.split-reverse .split { direction: rtl; }
.split-reverse .split > * { direction: ltr; }

.split img { width: 100%; height: 640px; object-fit: cover; }

.split video { width: 100%; height: 640px; object-fit: contain; background: transparent; }

.split-text .eyebrow { margin-bottom: 24px; }

.split-text h2 { font-size: clamp(1.9rem, 3.4vw, 2.8rem); margin-bottom: 24px; }

.split-text p { color: var(--color-ink-soft); margin-bottom: 18px; }

/* ---------- Stats ---------- */

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  text-align: center;
}

.stat .num {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 4vw, 3.4rem);
  color: var(--color-accent);
}

.stat .label {
  margin-top: 8px;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
}

/* ---------- Project grid ---------- */

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  margin-bottom: 56px;
}

.filters button {
  background: none;
  border: none;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  cursor: pointer;
  padding-bottom: 6px;
  border-bottom: 1px solid transparent;
  transition: color .3s ease, border-color .3s ease;
}

.filters button:hover,
.filters button.active {
  color: var(--color-ink);
  border-color: var(--color-accent);
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

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

.project-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .8s ease;
}

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

.project-card .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(20,24,18,0) 40%, rgba(20,24,18,0.75) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 28px;
  color: var(--color-white);
}

.project-card .overlay .tag {
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #cdd6bf;
  margin-bottom: 6px;
}

.project-card .overlay h3 {
  font-size: 1.5rem;
  font-weight: 400;
}

.project-card[hidden] { display: none; }

/* ---------- Services ---------- */

.services-list {
  border-top: 1px solid var(--color-line);
}

.service-row {
  display: grid;
  grid-template-columns: 90px 1fr 1fr;
  gap: 40px;
  padding: 40px 0;
  border-bottom: 1px solid var(--color-line);
  align-items: baseline;
}

.service-row .index {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--color-accent);
}

.service-row h3 {
  font-size: 1.6rem;
  font-weight: 400;
}

.service-row p { color: var(--color-ink-soft); }

/* ---------- Service groups + accordion ---------- */

.service-group { margin-bottom: 100px; }

.service-group:last-child { margin-bottom: 0; }

.service-group-head {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 40px;
  align-items: baseline;
  margin-bottom: 48px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--color-line);
}

.service-group-head .index {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--color-accent);
}

.service-group-head h2 { font-size: clamp(1.9rem, 3.2vw, 2.6rem); margin-bottom: 14px; }

.service-group-head p { color: var(--color-ink-soft); max-width: 640px; }

.accordion-item {
  border-bottom: 1px solid var(--color-line);
}

.accordion-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 30px 0;
  text-align: left;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  color: var(--color-ink);
}

.accordion-icon {
  flex: none;
  width: 28px;
  height: 28px;
  border: 1px solid var(--color-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--color-accent);
  transition: transform .35s ease;
}

.accordion-item.is-open .accordion-icon { transform: rotate(135deg); }

.accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height .5s ease;
}

.accordion-item.is-open .accordion-panel { max-height: 900px; }

.accordion-panel-inner { padding: 0 0 34px; max-width: 760px; }

.accordion-panel-inner p { color: var(--color-ink-soft); margin-bottom: 16px; }

.accordion-panel-inner ul {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 32px;
  margin-top: 8px;
}

.accordion-panel-inner li {
  font-size: 0.92rem;
  color: var(--color-ink-soft);
  padding-left: 18px;
  position: relative;
}

.accordion-panel-inner li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 1px;
  background: var(--color-accent);
}

@media (max-width: 720px) {
  .service-group-head { grid-template-columns: 1fr; gap: 12px; }
  .accordion-panel-inner ul { grid-template-columns: 1fr; }
}

/* ---------- Team ---------- */

.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.team-card img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  margin-bottom: 18px;
  filter: grayscale(15%);
}

.team-card h3 { font-size: 1.3rem; font-weight: 400; }

.team-card .role {
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-top: 4px;
}

/* ---------- Values ---------- */

.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 48px;
}

.value h3 {
  font-size: 1.6rem;
  margin-bottom: 14px;
}

.value p { color: var(--color-ink-soft); }

.value .num {
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--color-accent);
  margin-bottom: 18px;
  display: block;
}

/* ---------- Pull quote ---------- */

.pull-quote {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  line-height: 1.35;
  max-width: 780px;
  border-left: 1px solid var(--color-accent);
  padding-left: 32px;
  color: var(--color-ink);
}

/* ---------- CTA band ---------- */

.cta-band {
  text-align: center;
  padding: 130px 0;
}

.cta-band h2 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  max-width: 760px;
  margin: 0 auto 32px;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 18px 36px;
  border: 1px solid currentColor;
  transition: background .3s ease, color .3s ease;
}

.btn-primary {
  background: var(--color-ink);
  color: var(--color-bg);
  border-color: var(--color-ink);
}

.btn-primary:hover { background: transparent; color: var(--color-ink); }

.bg-ink .btn-primary,
.hero .btn-primary {
  background: var(--color-bg);
  color: var(--color-ink);
  border-color: var(--color-bg);
}

.bg-ink .btn-primary:hover,
.hero .btn-primary:hover { background: transparent; color: var(--color-bg); }

/* ---------- Project detail ---------- */

.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  margin-top: 28px;
}

.project-meta .meta-label {
  display: block;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.85);
}

.project-meta .meta-value {
  display: block;
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0;
  text-transform: none;
  color: var(--color-white);
  margin-top: 6px;
}

.project-intro {
  max-width: 820px;
}

.project-intro p { color: var(--color-ink-soft); margin-bottom: 20px; font-size: 1.08rem; }

.project-subhead {
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 48px 0 18px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

.gallery-grid .g-wide { grid-column: span 2; }

.gallery-video {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--color-ink);
}

.gallery-video.g-wide { grid-column: span 2; }

.gallery-video video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.gallery-video .g-cap {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 16px 18px;
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-white);
  background: linear-gradient(180deg, rgba(20,24,18,0) 0%, rgba(20,24,18,0.7) 100%);
}

.gallery-item {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  cursor: pointer;
  background: var(--color-bg-alt);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .6s ease;
}

.gallery-item:hover img { transform: scale(1.05); }

.gallery-item .g-cap {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 16px 18px;
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-white);
  background: linear-gradient(180deg, rgba(20,24,18,0) 0%, rgba(20,24,18,0.7) 100%);
  opacity: 0;
  transition: opacity .3s ease;
}

.gallery-item:hover .g-cap { opacity: 1; }

.project-nav-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
}

.project-nav-link:hover { color: var(--color-accent); }

/* Lightbox */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: rgba(15, 17, 14, 0.96);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s ease;
}

.lightbox.is-open { opacity: 1; visibility: visible; }

.lightbox img {
  max-width: 88vw;
  max-height: 82vh;
  width: auto;
  height: auto;
  object-fit: contain;
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
  position: absolute;
  background: none;
  border: none;
  color: var(--color-bg);
  cursor: pointer;
  font-family: var(--font-sans);
}

.lightbox-close {
  top: 28px;
  right: 32px;
  font-size: 1.8rem;
  line-height: 1;
}

.lightbox-prev,
.lightbox-next {
  top: 50%;
  transform: translateY(-50%);
  font-size: 2.2rem;
  padding: 12px;
}

.lightbox-prev { left: 16px; }
.lightbox-next { right: 16px; }

.lightbox-counter {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: rgba(247,245,240,0.7);
}

@media (max-width: 720px) {
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid .g-wide { grid-column: span 2; }
}

/* ---------- Contact ---------- */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
}

.info-block { margin-bottom: 36px; }

.info-block .eyebrow { margin-bottom: 10px; }

.info-block a, .info-block p { font-size: 1.05rem; color: var(--color-ink-soft); }

form { display: flex; flex-direction: column; gap: 26px; }

.field { position: relative; }

.field label {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  margin-bottom: 8px;
}

.field input,
.field textarea {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--color-line);
  padding: 10px 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--color-ink);
  outline: none;
  transition: border-color .3s ease;
}

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

.field textarea { resize: vertical; min-height: 110px; }

.map-frame {
  width: 100%;
  height: 100%;
  min-height: 420px;
  object-fit: cover;
}

/* ---------- Footer ---------- */

footer {
  background: var(--color-ink);
  color: var(--color-bg);
  padding: 90px 0 36px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 70px;
  border-bottom: 1px solid rgba(247,245,240,0.15);
}

.footer-top .logo { color: var(--color-bg); margin-bottom: 18px; display: block; }

.footer-top p { color: rgba(247,245,240,0.65); max-width: 320px; }

.footer-col h4 {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 20px;
  font-weight: 400;
  color: rgba(247,245,240,0.5);
}

.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 12px; }

.footer-col a { color: rgba(247,245,240,0.85); transition: color .3s ease; }
.footer-col a:hover { color: var(--color-accent); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  padding-top: 28px;
  font-size: 0.78rem;
  color: rgba(247,245,240,0.5);
}

/* ---------- Page hero (interior pages) ---------- */

.page-hero {
  margin-top: var(--nav-h);
  height: calc(70vh - var(--nav-h));
  min-height: 520px;
}

.page-hero .hero-content { padding-bottom: 70px; }

/* ---------- Responsive ---------- */

@media (max-width: 1080px) {
  .container { padding: 0 28px; }
  .split, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .split img { height: 420px; }
  .split video { height: 420px; }
  .split-reverse .split { direction: ltr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .project-grid { grid-template-columns: repeat(2, 1fr); }
  .service-row { grid-template-columns: 60px 1fr; }
  .service-row p { grid-column: 2 / 3; }
}

@media (max-width: 720px) {
  :root { --nav-h: 96px; }
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-right { gap: 14px; }
  .lang-toggle { padding: 8px 12px; font-size: 0.72rem; }
  section { padding: 90px 0; }
  .project-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .scroll-cue { display: none; }
}

/* ---------- Reveal animation ---------- */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .8s ease, transform .8s ease;
}

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

/* ---------- Mobile nav drawer ---------- */

.mobile-nav {
  position: fixed;
  inset: 0;
  background: var(--color-bg);
  z-index: 200;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  transform: translateY(-100%);
  transition: transform .4s ease;
}

.mobile-nav.is-open { transform: translateY(0); }

.mobile-nav a {
  font-family: var(--font-display);
  font-size: 2rem;
}

.mobile-nav-close {
  position: absolute;
  top: 26px;
  right: 28px;
  background: none;
  border: none;
  font-size: 1.6rem;
  cursor: pointer;
}