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

:root {
  /* Derived from NSquare logo: cream bg, forest green, warm gold */
  --clr-bg:       #f4f0e8;   /* warm cream — logo background */
  --clr-surface:  #ffffff;
  --clr-text:     #1c2820;   /* near-black with forest green tint */
  --clr-muted:    #606b5e;   /* sage muted */
  --clr-accent:   #a08030;   /* gold — logo lettering */
  --clr-primary:  #2d5042;   /* forest green — logo main shape */
  --clr-sage:     #edf4ef;   /* very light sage — section background */
  --clr-border:   #ddd8cc;   /* warm border */
  --radius:       6px;
  --radius-lg:    14px;
  --shadow-sm:    0 2px 8px rgba(45,80,66,.07);
  --shadow-md:    0 8px 32px rgba(45,80,66,.13);
  --font-sans:    'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-serif:   Georgia, 'Times New Roman', serif;
  --transition:   0.25s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.6;
  font-size: 16px;
}

a { color: inherit; text-decoration: none; }
em { font-style: italic; font-family: var(--font-serif); }
img { display: block; max-width: 100%; height: auto; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}


/* ── Nav ──────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  height: 72px;
  background: rgba(244,240,232,.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--clr-border);
}

.nav-logo {
  display: flex;
  align-items: center;
}
.nav-logo-img {
  height: 54px;
  width: auto;
  border-radius: 6px;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 36px;
}
.nav-links a {
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--clr-muted);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--clr-primary); }

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
}


/* ── Hero ─────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  padding: 100px 40px 60px;
  max-width: 1300px;
  margin: 0 auto;
  gap: 60px;
}

.hero-eyebrow {
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 20px;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(42px, 5.5vw, 76px);
  line-height: 1.08;
  font-weight: 400;
  margin-bottom: 24px;
}

.hero-sub {
  font-size: 17px;
  color: var(--clr-muted);
  max-width: 440px;
  margin-bottom: 40px;
  line-height: 1.7;
}

/* Mosaic hero */
.hero-mosaic {
  display: flex;
  justify-content: center;
  align-items: center;
}

.mosaic-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(3, 1fr);
  gap: 10px;
  width: min(460px, 44vw);
  aspect-ratio: 1;
}

.mosaic-cell {
  border-radius: var(--radius);
  overflow: hidden;
  animation: mosaicFade 4s ease-in-out infinite alternate;
}
.mosaic-cell:nth-child(1) { animation-delay: 0s; }
.mosaic-cell:nth-child(2) { animation-delay: .4s; }
.mosaic-cell:nth-child(3) { animation-delay: .8s; }
.mosaic-cell:nth-child(4) { animation-delay: 1.2s; }
.mosaic-cell:nth-child(5) { animation-delay: 1.6s; }
.mosaic-cell:nth-child(6) { animation-delay: 2.0s; }
.mosaic-cell:nth-child(7) { animation-delay: 2.4s; }
.mosaic-cell:nth-child(8) { animation-delay: 2.8s; }
.mosaic-cell:nth-child(9) { animation-delay: 3.2s; }

.mosaic-cell img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

@keyframes mosaicFade {
  0%   { opacity: .75; transform: scale(.97); }
  100% { opacity: 1;   transform: scale(1); }
}


/* ── Buttons ──────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--clr-primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--clr-accent);
  border-color: var(--clr-accent);
}

.btn-outline {
  background: transparent;
  color: var(--clr-primary);
  border-color: var(--clr-primary);
}
.btn-outline:hover {
  background: var(--clr-primary);
  color: #fff;
}


/* ── Section typography ───────────────────────────────── */
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(30px, 3.5vw, 46px);
  font-weight: 400;
  margin-bottom: 14px;
}

.section-eyebrow {
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 14px;
}


/* ── Collections section ──────────────────────────────── */
.collections-section {
  padding: 80px 0 100px;
}

/* Material tabs */
.material-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--clr-border);
  padding-bottom: 0;
}

.material-tab {
  background: none;
  border: none;
  padding: 10px 4px 14px;
  margin-right: 28px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--clr-muted);
  cursor: pointer;
  position: relative;
  transition: color var(--transition);
}
.material-tab:hover { color: var(--clr-text); }
.material-tab.active { color: var(--clr-primary); font-weight: 600; }
.material-tab.active::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 2px;
  background: var(--clr-primary);
  border-radius: 2px;
}

.section-sub {
  font-size: 12px;
  color: var(--clr-muted);
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 44px;
}

/* Empty-state for material with no collections yet */
.empty-state {
  text-align: center;
  padding: 80px 24px 60px;
  background: var(--clr-surface);
  border: 1px dashed var(--clr-border);
  border-radius: var(--radius-lg);
}
.empty-state h3 {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 400;
  margin-bottom: 14px;
}
.empty-state p {
  color: var(--clr-muted);
  font-size: 15px;
  line-height: 1.7;
  max-width: 480px;
  margin: 0 auto 28px;
}

.collections-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.col-card {
  background: var(--clr-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
  animation: fadeUp .5s ease both;
}
.col-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.col-card-img-wrap {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
}
.col-card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.col-card:hover .col-card-img-wrap img { transform: scale(1.06); }

.col-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(28,40,32,.55) 0%, transparent 55%);
  display: flex;
  align-items: flex-end;
  padding: 16px;
}

.col-card-count {
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(255,255,255,.9);
  font-weight: 600;
}

.col-card-info { padding: 20px 22px 22px; }
.col-card-info h3 {
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 400;
  margin-bottom: 6px;
}
.col-card-info p {
  font-size: 13px;
  color: var(--clr-muted);
  line-height: 1.55;
  margin-bottom: 14px;
}
.col-card-arrow {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--clr-accent);
  transition: letter-spacing var(--transition);
}
.col-card:hover .col-card-arrow { letter-spacing: .14em; }


/* ── View All button ──────────────────────────────────── */
.view-all-wrap {
  margin-top: 52px;
  display: flex;
  justify-content: center;
}

.view-all-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 36px;
  border: 1.5px solid var(--clr-primary);
  border-radius: 999px;
  background: transparent;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--clr-primary);
  cursor: pointer;
  transition: all var(--transition);
}
.view-all-btn:hover {
  background: var(--clr-primary);
  color: #fff;
}
.view-all-btn svg { transition: transform var(--transition); }
.view-all-btn:hover svg { transform: translateX(4px); }


/* ── Multi-filter bar ─────────────────────────────────── */
.multifilter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 36px;
}

.mf-chip {
  padding: 7px 18px;
  border-radius: 999px;
  border: 1.5px solid var(--clr-border);
  background: var(--clr-surface);
  color: var(--clr-muted);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .04em;
  cursor: pointer;
  transition: all var(--transition);
}
.mf-chip:hover {
  border-color: var(--clr-primary);
  color: var(--clr-primary);
}
.mf-chip.active {
  background: var(--clr-primary);
  border-color: var(--clr-primary);
  color: #fff;
}
.mf-chip:first-child.active {
  background: var(--clr-text);
  border-color: var(--clr-text);
}

/* load-more sentinel */
.load-sentinel { height: 1px; }


/* ── Detail / All-tiles view ──────────────────────────── */
.detail-section { padding: 80px 0 100px; }

.detail-header {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-bottom: 44px;
  flex-wrap: wrap;
}

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border: 1.5px solid var(--clr-border);
  border-radius: 999px;
  background: var(--clr-surface);
  font-size: 13px;
  font-weight: 500;
  color: var(--clr-muted);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}
.back-btn:hover {
  border-color: var(--clr-primary);
  color: var(--clr-primary);
}

.detail-title {
  font-family: var(--font-serif);
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 400;
}

.detail-count {
  font-size: 12px;
  color: var(--clr-muted);
  letter-spacing: .06em;
  margin-top: 4px;
}


/* ── Gallery grid ─────────────────────────────────────── */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.tile-card {
  background: var(--clr-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
}
.tile-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.tile-img-wrap {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--clr-border);
}
.tile-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.tile-card:hover .tile-img-wrap img { transform: scale(1.04); }

.tile-info {
  padding: 14px 18px 18px;
}
.tile-info h3 {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 400;
}
.tile-info p { display: none; }

.tile-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: 999px;
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--clr-muted);
}


/* ── Lightbox ─────────────────────────────────────────── */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(10,16,12,.9);
  justify-content: center;
  align-items: center;
  padding: 20px;
  animation: fadeIn .2s ease;
}
.lightbox.open { display: flex; }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.lightbox-close {
  position: absolute;
  top: 24px; right: 32px;
  font-size: 36px;
  color: #fff;
  background: none;
  border: none;
  cursor: pointer;
  line-height: 1;
  opacity: .7;
  transition: opacity var(--transition);
}
.lightbox-close:hover { opacity: 1; }

.lightbox-content {
  background: var(--clr-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  max-width: 860px;
  width: 100%;
  display: grid;
  grid-template-columns: 3fr 2fr;
}

.lightbox-img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}

.lightbox-meta {
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
}
.lightbox-meta h3 {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 400;
}
.lightbox-meta p {
  font-size: 14px;
  color: var(--clr-muted);
  line-height: 1.7;
}


/* ── About ────────────────────────────────────────────── */
.about-section {
  background: #1c3028;
  color: #fff;
  padding: 120px 0;
}

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

.about-logo {
  height: 110px;
  width: auto;
  border-radius: 10px;
  margin-bottom: 32px;
  display: block;
}

.about-section .section-eyebrow { color: var(--clr-accent); }

.about-text h2 {
  font-family: var(--font-serif);
  font-size: clamp(32px, 3.5vw, 50px);
  font-weight: 400;
  margin-bottom: 24px;
  line-height: 1.15;
}

.about-text p {
  color: rgba(255,255,255,.72);
  font-size: 16px;
  line-height: 1.75;
  margin-bottom: 36px;
  max-width: 420px;
}

.about-text .btn-outline {
  color: #fff;
  border-color: rgba(255,255,255,.4);
}
.about-text .btn-outline:hover {
  background: #fff;
  color: #1c3028;
  border-color: #fff;
}

.about-img-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: 10px;
  height: 340px;
}

.about-img-cell {
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition);
}
.about-img-cell:hover { transform: scale(1.03); }
.about-img-cell img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}


/* ── Contact ──────────────────────────────────────────── */
.contact-section { padding: 120px 0; }

.contact-section h2 {
  font-family: var(--font-serif);
  font-size: clamp(30px, 3.5vw, 50px);
  font-weight: 400;
  margin-bottom: 52px;
  line-height: 1.2;
}

.contact-form {
  max-width: 640px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--clr-muted);
  font-weight: 600;
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 13px 16px;
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 15px;
  color: var(--clr-text);
  background: var(--clr-surface);
  transition: border-color var(--transition);
  outline: none;
  resize: vertical;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--clr-primary);
}

.form-note {
  font-size: 14px;
  color: var(--clr-muted);
}
.form-note a {
  color: var(--clr-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.form-success {
  display: none;
  padding: 20px 24px;
  background: #edf4ef;
  border: 1px solid #9bbfa8;
  border-radius: var(--radius);
  color: var(--clr-primary);
  font-size: 15px;
}


/* ── Footer ───────────────────────────────────────────── */
.footer {
  background: #1a2e24;
  padding: 36px 40px;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-logo {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .2em;
  color: rgba(255,255,255,.45);
}

.footer-right {
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: flex-end;
}

.footer-copy {
  font-size: 13px;
  color: rgba(255,255,255,.35);
}

.footer-legal {
  font-size: 12px;
  color: rgba(255,255,255,.28);
  letter-spacing: .02em;
}


/* ── Responsive ───────────────────────────────────────── */
@media (max-width: 1024px) {
  .collections-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 110px 24px 60px;
  }
  .hero-sub { margin: 0 auto 40px; }
  .hero-mosaic { order: -1; }
  .mosaic-grid { width: min(320px, 80vw); }

  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-img-grid { height: 260px; }
  .lightbox-content { grid-template-columns: 1fr; }
  .lightbox-img { height: 260px; }
}

@media (max-width: 600px) {
  .collections-grid { grid-template-columns: 1fr; }
  .nav { padding: 0 20px; }
  .nav-links { display: none; }
  .nav-links.nav-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px; left: 0; right: 0;
    background: rgba(244,240,232,.98);
    padding: 20px 24px;
    border-bottom: 1px solid var(--clr-border);
    gap: 18px;
  }
  .nav-hamburger { display: flex; }
  .gallery-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; gap: 12px; text-align: center; }
  .footer-right { align-items: center; }
}