/* ============================================
   AtlasLens.art — Stylesheet
   Color Palette: #F8F7F4 cream, #1A1A1A black, 
   #A89060 gold, #777 muted, #E8E4DC warm gray
   ============================================ */

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

:root {
  --bg: #F8F7F4;
  --bg-alt: #F0EDE7;
  --text: #1A1A1A;
  --text-muted: #777777;
  --text-light: #999999;
  --accent: #A89060;
  --accent-light: #D4C5A0;
  --border: #E8E4DC;
  --white: #FFFFFF;
  --serif: 'Playfair Display', 'Georgia', serif;
  --sans: 'Inter', 'Helvetica Neue', Arial, sans-serif;
}

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

body {
  font-family: var(--sans);
  font-weight: 300;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--text);
}

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

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 400;
  line-height: 1.2;
}

em {
  font-style: italic;
  color: var(--accent);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}

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

/* ---- Navigation ---- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(248, 247, 244, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, background 0.3s ease;
}

.nav.scrolled {
  border-bottom-color: var(--border);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo svg {
  display: block;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 36px;
}

.nav-links a {
  font-family: var(--sans);
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color 0.3s ease;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.3s ease;
}

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

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

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

.nav-toggle span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--text);
  transition: all 0.3s ease;
}

/* ---- Hero ---- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 40px 80px;
  position: relative;
  background: var(--bg);
}

.hero-content {
  max-width: 700px;
}

.hero-pre {
  font-size: 0.75rem;
  letter-spacing: 6px;
  color: var(--text-light);
  margin-bottom: 24px;
  font-weight: 300;
}

.hero-title {
  font-family: var(--serif);
  font-size: clamp(3.5rem, 8vw, 7rem);
  font-weight: 400;
  letter-spacing: 4px;
  margin-bottom: 24px;
  line-height: 1;
}

.hero-line {
  width: 60px;
  height: 1px;
  background: var(--accent);
  margin: 0 auto 24px;
}

.hero-sub {
  font-size: 1.1rem;
  font-weight: 300;
  color: var(--text-muted);
  letter-spacing: 1px;
  margin-bottom: 48px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---- Buttons ---- */
.btn {
  display: inline-block;
  padding: 14px 36px;
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
}

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

.btn-primary:hover {
  background: var(--accent);
  color: var(--white);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-full {
  width: 100%;
  text-align: center;
}

/* ---- Sections ---- */
.section {
  padding: 120px 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section-label {
  font-size: 0.7rem;
  letter-spacing: 6px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
  font-weight: 400;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 300;
  max-width: 520px;
  margin-bottom: 60px;
}

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

.about-text h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  margin-bottom: 24px;
}

.about-text p {
  color: var(--text-muted);
  margin-bottom: 16px;
  font-size: 0.95rem;
}

.about-stats {
  display: flex;
  gap: 48px;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.stat-num {
  display: block;
  font-family: var(--serif);
  font-size: 1.8rem;
  color: var(--accent);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.75rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-light);
}

.about-image-placeholder {
  width: 100%;
  aspect-ratio: 3 / 4;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  color: var(--text-light);
  letter-spacing: 2px;
}

/* ---- Services ---- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.service-card {
  padding: 40px 32px;
  background: var(--bg);
  border: 1px solid var(--border);
  transition: all 0.4s ease;
}

.section-alt .service-card {
  background: var(--white);
}

.service-card:hover {
  border-color: var(--accent-light);
  transform: translateY(-4px);
}

.service-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 24px;
}

.service-icon svg {
  width: 100%;
  height: 100%;
}

.service-card h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.service-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ---- Featured Grid ---- */
.featured-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 240px;
  gap: 16px;
  margin-top: 48px;
}

.featured-item {
  position: relative;
  overflow: hidden;
}

.featured-item.tall {
  grid-row: span 2;
}

.featured-item.wide {
  grid-column: span 2;
}

.featured-placeholder {
  width: 100%;
  height: 100%;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: var(--text-light);
  letter-spacing: 3px;
  text-transform: uppercase;
  transition: all 0.4s ease;
}

.featured-item:hover .featured-placeholder {
  background: var(--border);
}

.centered-cta {
  text-align: center;
  margin-top: 48px;
}

/* ---- Contact ---- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 80px;
}

.contact-item {
  margin-bottom: 32px;
}

.contact-item h4 {
  font-size: 0.72rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--text-light);
  margin-bottom: 8px;
  font-family: var(--sans);
  font-weight: 400;
}

.contact-item a,
.contact-item p {
  font-size: 1rem;
  color: var(--text);
}

.social-links {
  display: flex;
  gap: 20px;
}

.social-links a {
  font-size: 0.85rem;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  padding-bottom: 2px;
}

.social-links a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

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

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-light);
  margin-bottom: 8px;
  font-weight: 400;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--sans);
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--text);
  background: var(--white);
  border: 1px solid var(--border);
  outline: none;
  transition: border-color 0.3s ease;
  -webkit-appearance: none;
}

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

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* ---- Footer ---- */
.footer {
  background: var(--text);
  padding: 60px 0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 20px;
}

.footer-copy {
  font-size: 0.78rem;
  color: #666;
  letter-spacing: 1px;
}

.footer-links {
  display: flex;
  gap: 28px;
}

.footer-links a {
  font-size: 0.72rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #666;
  transition: color 0.3s;
}

.footer-links a:hover {
  color: var(--accent);
}

/* ---- Animations ---- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .featured-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 200px;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 24px;
  }

  .nav-inner {
    padding: 0 24px;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(248, 247, 244, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: center;
    gap: 0;
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    opacity: 0;
    transition: all 0.4s ease;
    pointer-events: none;
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-links li {
    width: 100%;
    text-align: center;
  }

  .nav-links a {
    display: block;
    padding: 16px;
  }

  .nav-links a::after {
    display: none;
  }

  .hero {
    min-height: 90vh;
    padding: 100px 24px 60px;
  }

  .section {
    padding: 80px 0;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-image {
    order: -1;
  }

  .about-stats {
    gap: 32px;
  }

  .services-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .featured-grid {
    grid-template-columns: 1fr;
    grid-auto-rows: 200px;
  }

  .featured-item.tall {
    grid-row: span 1;
  }

  .featured-item.wide {
    grid-column: span 1;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  /* Portfolio page */
  .portfolio-filters {
    gap: 8px;
  }

  .filter-btn {
    padding: 8px 16px;
    font-size: 0.68rem;
  }

  .portfolio-grid {
    columns: 1;
  }
}

/* ============================================
   Portfolio Page Styles
   ============================================ */

.portfolio-hero {
  padding: 140px 40px 60px;
  text-align: center;
  background: var(--bg);
}

.portfolio-hero h1 {
  font-family: var(--serif);
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: 12px;
}

.portfolio-hero p {
  color: var(--text-muted);
  font-size: 1rem;
  font-weight: 300;
}

.portfolio-section {
  padding: 40px 0 120px;
}

.portfolio-filters {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

.filter-btn {
  padding: 10px 24px;
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 2px;
  text-transform: uppercase;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.3s ease;
}

.filter-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.filter-btn.active {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

/* Masonry-style portfolio grid */
.portfolio-grid {
  columns: 3;
  column-gap: 20px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}

.portfolio-item {
  break-inside: avoid;
  margin-bottom: 20px;
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.portfolio-item .img-placeholder {
  width: 100%;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  color: var(--text-light);
  letter-spacing: 2px;
  text-transform: uppercase;
  transition: all 0.4s ease;
}

.portfolio-item:hover .img-placeholder {
  background: var(--border);
}

.portfolio-item .overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 24px;
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  opacity: 0;
  transition: opacity 0.4s ease;
}

.portfolio-item:hover .overlay {
  opacity: 1;
}

.overlay h4 {
  color: #fff;
  font-size: 1rem;
  font-family: var(--serif);
  margin-bottom: 4px;
}

.overlay span {
  color: rgba(255,255,255,0.7);
  font-size: 0.72rem;
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* portfolio item height variations */
.portfolio-item.h-sm .img-placeholder { height: 240px; }
.portfolio-item.h-md .img-placeholder { height: 320px; }
.portfolio-item.h-lg .img-placeholder { height: 420px; }
.portfolio-item.h-xl .img-placeholder { height: 500px; }

/* Category header within portfolio */
.category-header {
  column-span: all;
  padding: 60px 0 20px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.category-header h3 {
  font-family: var(--serif);
  font-size: 1.6rem;
  font-weight: 400;
}

.category-header span {
  font-size: 0.75rem;
  color: var(--text-light);
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.92);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.lightbox.active {
  display: flex;
  opacity: 1;
}

.lightbox-close {
  position: absolute;
  top: 24px;
  right: 32px;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.6rem;
  cursor: pointer;
  font-weight: 200;
  letter-spacing: 2px;
}

.lightbox-content {
  max-width: 80vw;
  max-height: 80vh;
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px;
  color: var(--text-light);
  font-size: 0.85rem;
  letter-spacing: 2px;
}

@media (max-width: 768px) {
  .portfolio-hero {
    padding: 120px 24px 40px;
  }

  .portfolio-grid {
    columns: 1;
    padding: 0 24px;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .portfolio-grid {
    columns: 2;
  }
}