@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600&display=swap');

:root {
  --concrete-50: #fafaf9;
  --concrete-100: #f5f5f4;
  --concrete-200: #e7e5e4;
  --concrete-300: #d6d3d1;
  --concrete-400: #a8a29e;
  --concrete-500: #78716c;
  --concrete-600: #57534e;
  --concrete-700: #44403c;
  --concrete-800: #292524;
  --concrete-900: #1c1917;
  --accent: #8b7355;
  --accent-light: #a8956f;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  color: var(--concrete-800);
  background: var(--concrete-50);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

/* Concrete texture overlay */
.concrete-texture {
  position: relative;
}
.concrete-texture::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 1;
}

/* Placeholder image blocks */
.img-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-align: center;
  padding: 1rem;
  overflow: hidden;
  position: relative;
}

.img-placeholder.hero {
  background: linear-gradient(135deg, #292524 0%, #57534e 40%, #78716c 70%, #44403c 100%);
}

.img-placeholder.project-1 {
  background: linear-gradient(160deg, #44403c 0%, #78716c 50%, #a8a29e 100%);
}

.img-placeholder.project-2 {
  background: linear-gradient(200deg, #1c1917 0%, #57534e 60%, #8b7355 100%);
}

.img-placeholder.project-3 {
  background: linear-gradient(140deg, #78716c 0%, #d6d3d1 50%, #a8a29e 100%);
}

.img-placeholder.project-4 {
  background: linear-gradient(180deg, #292524 0%, #44403c 50%, #78716c 100%);
}

.img-placeholder.project-5 {
  background: linear-gradient(170deg, #57534e 0%, #8b7355 50%, #44403c 100%);
}

.img-placeholder.project-6 {
  background: linear-gradient(150deg, #a8a29e 0%, #57534e 50%, #1c1917 100%);
}

.img-placeholder.about {
  background: linear-gradient(135deg, #57534e 0%, #8b7355 50%, #44403c 100%);
}

.img-placeholder.approach {
  background: linear-gradient(135deg, #292524 0%, #78716c 50%, #d6d3d1 100%);
}

/* Navigation */
.nav-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-wrapper.scrolled {
  background: rgba(250, 250, 249, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(0,0,0,0.05);
}

.nav-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.25rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--concrete-800);
  text-decoration: none;
  letter-spacing: -0.03em;
}

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

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  text-decoration: none;
  color: var(--concrete-600);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: color 0.3s;
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--concrete-900);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 1.5px;
  background: var(--accent);
}

/* Mobile menu */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.mobile-toggle span {
  width: 24px;
  height: 1.5px;
  background: var(--concrete-800);
  transition: all 0.3s;
}

.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(250, 250, 249, 0.98);
  backdrop-filter: blur(20px);
  z-index: 99;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
}

.mobile-menu.open {
  display: flex;
}

.mobile-menu a {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--concrete-800);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.mobile-menu a:hover {
  color: var(--accent);
}

.mobile-close {
  position: absolute;
  top: 1.5rem;
  right: 2rem;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--concrete-600);
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-toggle { display: flex; }
  .nav-inner { padding: 1rem 1.5rem; }
}

/* Hero Section */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(28,25,23,0.85) 0%, rgba(28,25,23,0.3) 40%, transparent 70%);
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem 5rem;
  width: 100%;
}

.hero-content h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  color: white;
  font-weight: 500;
  margin-bottom: 1.25rem;
  max-width: 700px;
}

.hero-content p {
  color: rgba(255,255,255,0.75);
  font-size: 1.125rem;
  max-width: 520px;
  margin-bottom: 2rem;
  line-height: 1.7;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(139,115,85,0.2);
  border: 1px solid rgba(139,115,85,0.4);
  color: var(--accent-light);
  padding: 0.5rem 1rem;
  border-radius: 2px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.3s;
}

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

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

.btn-outline {
  background: transparent;
  color: white;
  border: 1px solid rgba(255,255,255,0.3);
}

.btn-outline:hover {
  border-color: white;
  background: rgba(255,255,255,0.05);
}

.btn-dark {
  background: var(--concrete-800);
  color: white;
}

.btn-dark:hover {
  background: var(--concrete-900);
}

/* Sections */
.section {
  padding: 6rem 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.section-sm {
  padding: 4rem 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.section-full {
  padding: 6rem 2rem;
}

.section-dark {
  background: var(--concrete-900);
  color: white;
}

.section-light {
  background: var(--concrete-100);
}

.section-label {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 3rem);
  margin-bottom: 1.5rem;
  max-width: 600px;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--concrete-500);
  max-width: 560px;
  line-height: 1.8;
}

/* Grid layouts */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

@media (max-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* Project Cards */
.project-card {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
}

.project-card .img-placeholder {
  aspect-ratio: 4/3;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.project-card:hover .img-placeholder {
  transform: scale(1.05);
}

.project-card-info {
  padding: 1.25rem 0;
}

.project-card-info h3 {
  font-size: 1.125rem;
  margin-bottom: 0.25rem;
}

.project-card-info p {
  color: var(--concrete-500);
  font-size: 0.875rem;
}

/* Stats Row */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  padding: 4rem 0;
  border-top: 1px solid var(--concrete-200);
  border-bottom: 1px solid var(--concrete-200);
}

.stat-item h3 {
  font-size: 2.5rem;
  font-weight: 300;
  color: var(--concrete-800);
  margin-bottom: 0.25rem;
}

.stat-item p {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--concrete-500);
}

@media (max-width: 768px) {
  .stats-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem 1rem;
  }
}

/* Feature cards */
.feature-card {
  padding: 2.5rem;
  background: white;
  border: 1px solid var(--concrete-200);
  transition: all 0.3s;
}

.feature-card:hover {
  border-color: var(--concrete-300);
  box-shadow: 0 8px 30px rgba(0,0,0,0.04);
}

.feature-card i {
  font-size: 1.5rem;
  color: var(--accent);
  margin-bottom: 1.5rem;
  display: block;
}

.feature-card h3 {
  font-size: 1.125rem;
  margin-bottom: 0.75rem;
}

.feature-card p {
  color: var(--concrete-500);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* Footer */
.footer {
  background: var(--concrete-900);
  color: var(--concrete-400);
  padding: 4rem 2rem 2rem;
}

.footer-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
}

.footer h4 {
  color: white;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1.25rem;
}

.footer p, .footer a {
  font-size: 0.875rem;
  color: var(--concrete-400);
  text-decoration: none;
  line-height: 2;
}

.footer a:hover {
  color: white;
}

.footer-logo {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.25rem;
  font-weight: 600;
  color: white;
  margin-bottom: 1rem;
}

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

.footer-bottom {
  max-width: 1400px;
  margin: 3rem auto 0;
  padding-top: 2rem;
  border-top: 1px solid var(--concrete-800);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
}

.footer-bottom a {
  color: var(--concrete-500);
}

@media (max-width: 768px) {
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}

/* Page header for inner pages */
.page-header {
  padding: 8rem 2rem 4rem;
  background: var(--concrete-900);
  color: white;
}

.page-header-inner {
  max-width: 1400px;
  margin: 0 auto;
}

.page-header h1 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  margin-bottom: 1rem;
}

.page-header p {
  color: var(--concrete-400);
  font-size: 1.125rem;
  max-width: 560px;
}

/* Blog cards */
.blog-card {
  display: block;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--concrete-200);
  background: white;
  transition: all 0.3s;
}

.blog-card:hover {
  box-shadow: 0 8px 30px rgba(0,0,0,0.06);
  transform: translateY(-2px);
}

.blog-card .img-placeholder {
  aspect-ratio: 16/9;
}

.blog-card-body {
  padding: 1.5rem;
}

.blog-card-body .tag {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 0.75rem;
  display: block;
}

.blog-card-body h3 {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
}

.blog-card-body p {
  color: var(--concrete-500);
  font-size: 0.875rem;
  line-height: 1.7;
}

/* Contact form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--concrete-600);
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.875rem 1rem;
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  border: 1px solid var(--concrete-200);
  background: white;
  color: var(--concrete-800);
  transition: border-color 0.3s;
  outline: none;
}

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

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 640px) {
  .form-row { grid-template-columns: 1fr; }
}

/* Two col layout */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

@media (max-width: 768px) {
  .two-col { grid-template-columns: 1fr; gap: 2rem; }
}

/* Approach steps */
.approach-step {
  display: flex;
  gap: 2rem;
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--concrete-200);
}

.approach-step-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 3rem;
  font-weight: 300;
  color: var(--concrete-300);
  line-height: 1;
  min-width: 60px;
}

.approach-step h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.approach-step p {
  color: var(--concrete-500);
  font-size: 0.95rem;
}

/* FAQ */
.faq-item {
  border-bottom: 1px solid var(--concrete-200);
  padding: 1.5rem 0;
}

.faq-question {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.05rem;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  color: var(--concrete-800);
}

.faq-question i {
  transition: transform 0.3s;
  color: var(--concrete-400);
  font-size: 0.8rem;
}

.faq-item.open .faq-question i {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.open .faq-answer {
  max-height: 300px;
  padding-top: 1rem;
}

.faq-answer p {
  color: var(--concrete-500);
  font-size: 0.925rem;
  line-height: 1.8;
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* Team */
.team-card {
  text-align: center;
}

.team-card .img-placeholder {
  aspect-ratio: 1;
  border-radius: 50%;
  margin-bottom: 1.25rem;
  max-width: 200px;
  margin-left: auto;
  margin-right: auto;
}

.team-card h3 {
  font-size: 1.125rem;
  margin-bottom: 0.25rem;
}

.team-card p {
  color: var(--concrete-500);
  font-size: 0.875rem;
}

/* Map container */
.map-container {
  width: 100%;
  height: 400px;
  background: var(--concrete-200);
  border: 1px solid var(--concrete-200);
}

.map-container iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

/* Utilities */
.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-6 { margin-bottom: 3rem; }
.mb-8 { margin-bottom: 4rem; }
.mt-4 { margin-top: 2rem; }
.mt-6 { margin-top: 3rem; }
.gap-buttons { display: flex; gap: 1rem; flex-wrap: wrap; }