/* ─── Reset & Base ─────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --clr-bg:      #fafaf8;
  --clr-white:   #ffffff;
  --clr-text:    #1a1a1a;
  --clr-muted:   #6b6b6b;
  --clr-border:  #e0deda;
  --clr-accent:  #8b7355;
  --clr-ph:      #d9d4cc;
  --font-serif:  'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-sans:   'Inter', 'Helvetica Neue', Arial, sans-serif;
  --nav-h:       72px;
  --max-w:       1200px;
  --gap:         32px;
  --transition:  0.3s ease;
}

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

body {
  background: var(--clr-bg);
  color: var(--clr-text);
  font-family: var(--font-sans);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: inherit; text-decoration: none; }
img { display: block; width: 100%; height: auto; }
ul { list-style: none; }

/* ─── Typography ────────────────────────────────────────── */
h1, h2, h3, h4 { font-family: var(--font-serif); font-weight: 400; line-height: 1.2; }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.5rem); }

/* ─── Header / Nav ──────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--clr-white);
  border-bottom: 1px solid var(--clr-border);
}

.nav-inner {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
}

.nav-top {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem var(--gap);
  position: relative;
}

.logo {
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--clr-text);
  white-space: nowrap;
  text-align: center;
}
.logo span { color: var(--clr-muted); }

.nav-links {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--gap);
  border-top: 1px solid var(--clr-border);
}

.nav-links a {
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--clr-muted);
  transition: color var(--transition);
  position: relative;
  padding: 0.85rem 0;
  display: inline-block;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0.6rem; left: 0;
  width: 0; height: 1px;
  background: var(--clr-accent);
  transition: width var(--transition);
}

.nav-links a:hover,
.nav-links a.active { color: var(--clr-text); }
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  position: absolute;
  right: var(--gap);
}
.hamburger span {
  display: block;
  width: 24px; height: 1.5px;
  background: var(--clr-text);
  transition: var(--transition);
}

/* Mobile nav drawer */
.mobile-nav {
  display: none;
  position: fixed;
  inset: var(--nav-h) 0 0 0;
  background: var(--clr-white);
  z-index: 99;
  flex-direction: column;
  padding: 2rem var(--gap);
  gap: 1.5rem;
  border-top: 1px solid var(--clr-border);
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  font-size: 1.1rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--clr-muted);
  transition: color var(--transition);
}
.mobile-nav a:hover { color: var(--clr-text); }

/* ─── Page wrapper ──────────────────────────────────────── */
.page-content {
  flex: 1;
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gap);
}

/* ─── Placeholder image ─────────────────────────────────── */
.placeholder {
  background: var(--clr-ph);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-muted);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-family: var(--font-sans);
  position: relative;
  overflow: hidden;
}
.placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 60%);
}
.placeholder svg {
  width: 40px; height: 40px;
  opacity: 0.35;
  margin-bottom: 8px;
}
.placeholder-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  z-index: 1;
}

/* ─── Hero (Home) ───────────────────────────────────────── */
.hero {
  padding: 0;
  text-align: center;
}
.hero-label {
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 1rem;
}
.hero h1 { margin-bottom: 1.25rem; }
.hero p {
  color: var(--clr-muted);
  max-width: 540px;
  margin: 0 auto 2.5rem;
  line-height: 1.8;
}
.hero-cta {
  display: inline-block;
  padding: 0.75rem 2rem;
  border: 1px solid var(--clr-text);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: background var(--transition), color var(--transition);
}
.hero-cta:hover { background: var(--clr-text); color: var(--clr-white); }

/* ─── Home collections heading ─────────────────────────── */
.home-collections-label {
  font-family: 'Futura', 'Century Gothic', 'Trebuchet MS', 'Gill Sans', sans-serif;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--clr-text);
  text-align: center;
  padding: 1.5rem 0 1.2rem;
}

/* ─── Featured Collections (Home) ──────────────────────── */
.section-label {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 2.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--clr-border);
}

.featured-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 5rem;
}

.featured-card {
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.featured-card .img-wrap {
  height: 520px;
  overflow: hidden;
}

.featured-card .placeholder,
.featured-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.featured-card:hover .placeholder,
.featured-card:hover img { transform: scale(1.04); }

.featured-card .card-label {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 2.5rem 1.75rem 1.75rem;
  background: linear-gradient(to top, rgba(0,0,0,0.55) 0%, transparent 100%);
  color: var(--clr-white);
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  transition: opacity var(--transition);
}

.card-title { font-size: 1.5rem; font-family: var(--font-serif); }
.card-arrow {
  font-size: 1.2rem;
  transform: translateX(0);
  transition: transform var(--transition);
}
.featured-card:hover .card-arrow { transform: translateX(6px); }

/* Secondary 4-up grid */
.secondary-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 6rem;
}
.secondary-card { overflow: hidden; cursor: pointer; }
.secondary-card .img-wrap { height: 260px; overflow: hidden; }
.secondary-card .placeholder,
.secondary-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.secondary-card:hover .placeholder,
.secondary-card:hover img { transform: scale(1.06); }
.secondary-card .card-meta {
  padding: 0.85rem 0.1rem 0.3rem;
}
.card-category {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 0.25rem;
}
.card-name { font-family: var(--font-serif); font-size: 1rem; }

/* ─── Gallery Page ──────────────────────────────────────── */
.page-hero h2 {
  font-family: 'Futura', 'Century Gothic', 'Trebuchet MS', 'Gill Sans', sans-serif;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.page-hero {
  padding: 1.5rem 0 1.2rem;
  text-align: center;
  border-bottom: 1px solid var(--clr-border);
  margin-bottom: 3rem;
}
.page-hero .label {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 0.75rem;
}
.page-hero p {
  color: var(--clr-muted);
  max-width: 500px;
  margin: 1rem auto 0;
  font-size: 0.95rem;
  line-height: 1.8;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 5rem;
  align-items: center;
}

.gallery-grid--1col { grid-template-columns: 1fr; }
.gallery-grid--2col { grid-template-columns: 1fr 1fr; }
.gallery-grid--3col { grid-template-columns: repeat(3, 1fr); }

.gallery-item {
  overflow: hidden;
  cursor: pointer;
  position: relative;
}

.gallery-item .img-wrap {
  overflow: hidden;
}

.gallery-item .placeholder {
  width: 100%;
  aspect-ratio: 3/4;
  transition: transform 0.5s ease;
}

.gallery-item img {
  width: 100%;
  height: auto;
  transition: transform 0.5s ease;
}

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

.gallery-item .item-info {
  padding: 0.9rem 0 0.5rem;
}
.item-title { font-family: var(--font-serif); font-size: 1rem; margin-bottom: 0.25rem; }
.item-dims { font-size: 0.78rem; color: var(--clr-muted); }

/* Lightbox */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.9);
  z-index: 200;
  align-items: center;
  justify-content: center;
}
.lightbox.open { display: flex; }
.lightbox-close {
  position: absolute;
  top: 1.5rem; right: 1.5rem;
  background: none; border: none;
  color: white; font-size: 2rem;
  cursor: pointer; line-height: 1;
}
.lightbox-img {
  max-width: 85vw;
  max-height: 85vh;
  object-fit: contain;
}

/* ─── About Page ─────────────────────────────────────────── */
.about-intro {
  max-width: 780px;
  margin: 0 auto 3.5rem;
  text-align: center;
}
.about-intro p {
  color: var(--clr-muted);
  line-height: 1.9;
  font-size: 1.2rem;
  margin-bottom: 1rem;
}
.about-profile {
  display: grid;
  grid-template-columns: 560px 1fr;
  gap: 4rem;
  align-items: start;
  margin-bottom: 4.5rem;
}
.about-photo-wrap { text-align: center; }
.about-photo-wrap img { width: 100%; height: auto; display: block; }
.about-photo-wrap .placeholder { width: 100%; aspect-ratio: 3/4; }
.about-photo-name {
  margin-top: 0.75rem;
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-muted);
}
.about-bio p {
  color: var(--clr-muted);
  line-height: 1.9;
  font-size: 0.97rem;
  margin-bottom: 1.25rem;
}
.about-photo-wrap--rongsen {
  aspect-ratio: 1161 / 1121;
  overflow: hidden;
}
.about-photo-wrap--rongsen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 33%;
}
.about-gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 5rem;
  align-items: start;
}
.about-gallery-grid img { width: 100%; height: auto; display: block; }

/* ─── Contact Page ──────────────────────────────────────── */
.contact-form-wrap {
  position: relative;
  max-width: 680px;
  margin: 0 auto;
  padding-bottom: 6rem;
}

.contact-form { display: flex; flex-direction: column; gap: 1.25rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group label {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-muted);
}
.form-group input,
.form-group textarea,
.form-group select {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--clr-border);
  padding: 0.6rem 0;
  font-size: 0.95rem;
  font-family: var(--font-sans);
  color: var(--clr-text);
  outline: none;
  transition: border-color var(--transition);
  width: 100%;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus { border-color: var(--clr-accent); }
.form-group textarea { resize: vertical; min-height: 120px; }

.btn-submit {
  align-self: flex-start;
  padding: 0.8rem 2.5rem;
  background: var(--clr-text);
  color: var(--clr-white);
  border: none;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: background var(--transition), color var(--transition);
}
.btn-submit:hover { background: var(--clr-accent); }

.form-feedback { margin-bottom: 1.25rem; font-size: 0.9rem; padding: 0.75rem 1rem; border-radius: 2px; }
.form-success { background: #f0faf4; color: #2d6a4f; border: 1px solid #b7dfc9; }
.form-error   { background: #fff4f4; color: #9b2226; border: 1px solid #f5c2c2; }

.form-spinner-overlay {
  display: none;
  position: absolute;
  inset: 0;
  background: none;
  z-index: 10;
  align-items: center;
  justify-content: center;
}
.form-spinner-overlay.active { display: flex; }
.contact-form.faded { opacity: 0.3; pointer-events: none; transition: opacity 0.2s; }
.form-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--clr-border);
  border-top-color: var(--clr-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ─── Footer ─────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--clr-border);
  padding: 2.5rem var(--gap);
  background: var(--clr-white);
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-nav { display: flex; gap: 1.5rem; flex-wrap: wrap; }
.footer-nav a {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--clr-muted);
  transition: color var(--transition);
}
.footer-nav a:hover { color: var(--clr-text); }
.footer-copy {
  font-size: 0.78rem;
  color: var(--clr-muted);
}

/* ─── Page Transitions ────────────────────────────────────── */
html, body { overflow-x: hidden; }

@keyframes pageSlideIn {
  from { transform: translateX(100vw); }
  to   { transform: translateX(0); }
}

@keyframes pageSlideOut {
  from { transform: translateX(0); }
  to   { transform: translateX(-100vw); }
}

main {
  animation: pageSlideIn 0.38s cubic-bezier(0.25, 0.46, 0.45, 0.94) both;
}

main.page-leaving {
  animation: pageSlideOut 0.3s cubic-bezier(0.55, 0, 1, 0.45) both;
}

/* ─── Divider ─────────────────────────────────────────────── */
.divider {
  border: none;
  border-top: 1px solid var(--clr-border);
  margin: 4rem 0;
}

/* ─── Responsive ─────────────────────────────────────────── */
@media (max-width: 1100px) {
  .about-profile { grid-template-columns: 1fr; gap: 2rem; }
}

@media (max-width: 900px) {
  .featured-grid { grid-template-columns: 1fr; }
  .featured-card .img-wrap { height: 380px; }
  .secondary-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .about-profile { grid-template-columns: 1fr; gap: 2rem; }
  .about-gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .nav-top { border-bottom: none; }
}

@media (max-width: 580px) {
  :root { --gap: 20px; }
  .secondary-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .gallery-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .form-row { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 400px) {
  .gallery-grid { grid-template-columns: 1fr; }
  .secondary-grid { grid-template-columns: 1fr; }
}