@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@300;400;500;600;700&family=DM+Sans:opsz,wght@9..40,300;9..40,400;9..40,500;9..40,600&display=swap');

:root {
  /* Light Mode Colors */
  --bg-color: #faf9f6;
  --text-color: #1a1c1a;
  --accent-color: #c8a882;
  --surface-color: #f4f3f0;
  --nav-bg: rgba(250, 249, 246, 0.85);
  
  /* Shared Defaults */
  --font-heading: 'Cormorant Garamond', serif;
  --font-body: 'DM Sans', sans-serif;
  
  --spacing-base: 1rem;
  --spacing-lg: 4rem;
  --spacing-xl: 8rem;
  --transition-speed: 0.4s;
}

[data-theme="dark"] {
  /* Dark Mode Colors */
  --bg-color: #1a1c1a;
  --text-color: #faf9f6;
  --accent-color: #e3c199;
  --surface-color: #2f312f;
  --nav-bg: rgba(26, 28, 26, 0.85);
}

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.7;
  font-size: 16px;
  font-weight: 300;
  overflow-x: hidden;
  transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
}

body.fade-in-load {
  opacity: 0;
  animation: pageLoadFadeIn var(--transition-speed) ease forwards;
}

@keyframes pageLoadFadeIn {
  to { opacity: 1; }
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: 0.02em;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-speed);
}

/* Header & Nav */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  transition: background-color var(--transition-speed), padding var(--transition-speed);
  padding: 2rem 5%;
}

header.scrolled {
  background-color: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 1rem 5%;
  border-bottom: 1px solid rgba(200, 168, 130, 0.1);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1440px;
  margin: 0 auto;
}

.logo {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: -0.05em;
  color: var(--text-color);
}

.nav-links {
  display: flex;
  gap: 3rem;
  align-items: center;
}

.nav-links a {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-weight: 400;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  width: 0%;
  height: 1px;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--accent-color);
  transition: width var(--transition-speed) ease;
}

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

.nav-links a.active {
  color: var(--accent-color);
}

/* Fix Dark Mode Duplicate Button */
.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: color var(--transition-speed);
}

.theme-toggle:hover {
  color: var(--accent-color);
}

.desktop-controls {
  display: flex;
  align-items: center;
}

.mobile-controls {
  display: none;
}

.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 30px;
  height: 20px;
  position: relative;
  z-index: 200;
}

.hamburger span {
  display: block;
  position: absolute;
  height: 2px;
  width: 100%;
  background: var(--text-color);
  border-radius: 2px;
  opacity: 1;
  left: 0;
  transform: rotate(0deg);
  transition: .25s ease-in-out;
}

.hamburger span:nth-child(1) { top: 0px; }
.hamburger span:nth-child(2) { top: 9px; }
.hamburger span:nth-child(3) { top: 18px; }

.hamburger.open span:nth-child(1) { top: 9px; transform: rotate(135deg); }
.hamburger.open span:nth-child(2) { opacity: 0; left: -60px; }
.hamburger.open span:nth-child(3) { top: 9px; transform: rotate(-135deg); }

.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: var(--bg-color);
  z-index: 90;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

.mobile-menu.active {
  opacity: 1;
  pointer-events: auto;
}

.mobile-menu a {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  margin: 1rem 0;
  color: var(--text-color);
}

/* Utilities */
.container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 5%;
}

.section-padding {
  padding: var(--spacing-xl) 0;
}

.text-center { text-align: center; }

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.2, 0.8, 0.2, 1), transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 2.5rem;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  background-color: transparent;
  color: var(--text-color);
  border: 1px solid var(--text-color);
  border-radius: 9999px;
  transition: all 0.3s ease;
  cursor: pointer;
}

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

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

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

.whatsapp-float {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background-color: #25d366;
  color: #fff;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  z-index: 99;
  transition: transform 0.3s ease;
}
.whatsapp-float:hover { transform: scale(1.1) translateY(-5px); }

.back-to-top {
  position: fixed;
  bottom: 100px;
  right: 35px;
  background-color: transparent;
  color: var(--text-color);
  border: 1px solid var(--text-color);
  width: 45px;
  height: 45px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s ease;
  z-index: 99;
}
.back-to-top.visible { opacity: 1; pointer-events: auto; }
.back-to-top:hover { background-color: var(--text-color); color: var(--bg-color); }

/* --- HERO CAROUSEL --- */
.hero {
  position: relative;
  height: 100vh;
  width: 100%;
  overflow: hidden;
  background-color: #111;
}

.carousel-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1.2s ease-in-out;
  z-index: 1;
}

.carousel-slide.active {
  opacity: 1;
  z-index: 2;
}

.carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.carousel-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.1) 60%);
  display: flex;
  align-items: flex-end;
  padding: 5%;
  z-index: 2;
}

.hero-fixed-content {
  position: absolute;
  top: 50%;
  left: 5%;
  transform: translateY(-50%);
  z-index: 3;
  color: #fff;
}

.hero-fixed-content h1 {
  font-size: clamp(3.5rem, 8vw, 7rem);
  max-width: 1000px;
  line-height: 1;
  margin-bottom: 2rem;
  text-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.carousel-info {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  width: 100%;
  color: #fff;
  padding-bottom: 2rem;
}

.carousel-project-name {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 300;
  letter-spacing: 0.05em;
}

.carousel-project-meta {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-variant: small-caps;
  letter-spacing: 0.1em;
  opacity: 0.8;
}

.carousel-controls {
  position: absolute;
  bottom: 5%;
  left: 50%;
  transform: translateX(-50%);
  z-index: 4;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.carousel-arrow {
  background: none;
  border: none;
  color: rgba(255,255,255,0.6);
  cursor: pointer;
  padding: 10px;
  transition: color 0.3s;
}
.carousel-arrow:hover { color: #fff; }

.carousel-dots {
  display: flex;
  gap: 10px;
}

.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.3);
  cursor: pointer;
  transition: all 0.3s;
}

.carousel-dot.active {
  background: #fff;
  transform: scale(1.2);
}

/* Content Grid */
.content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  align-items: center;
}
.content-img {
  width: 100%;
  height: auto;
  aspect-ratio: 4/5;
  object-fit: cover;
}
.text-block h2 { font-size: clamp(2.5rem, 4vw, 4rem); margin-bottom: 2rem; }
.text-block p { margin-bottom: 1.5rem; font-size: 1.1rem; }

/* --- UPDATED PORTFOLIO GRID --- */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}
.portfolio-card:nth-child(even) { transform: translateY(4rem); }
.portfolio-card {
  position: relative;
  overflow: hidden;
  display: block;
}
.portfolio-card .aspect-ratio-holder {
  width: 100%;
  padding-top: 130%;
  position: relative;
  overflow: hidden;
  background: var(--surface-color);
}
.portfolio-card:nth-child(even) .aspect-ratio-holder { padding-top: 100%; }
.portfolio-card img {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 1.2s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.portfolio-card:hover img { transform: scale(1.05); }

/* Hover effect on card */
.portfolio-hover-overlay {
  position: absolute;
  inset: 0;
  background: rgba(20, 18, 16, 0.7);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  color: #fff;
  opacity: 0;
  transition: opacity 0.4s ease;
  padding: 2rem;
}
.portfolio-card:hover .portfolio-hover-overlay { opacity: 1; }
.portfolio-hover-overlay h3 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  font-family: var(--font-heading);
}
.portfolio-hover-overlay p {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 2rem;
  color: var(--accent-color);
}
.portfolio-hover-overlay .btn {
  border-color: rgba(255,255,255,0.5);
  color: #fff;
}
.portfolio-hover-overlay .btn:hover {
  background: var(--accent-color);
  border-color: var(--accent-color);
}

.portfolio-info {
  margin-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.portfolio-info h3 { font-size: 1.8rem; }
.portfolio-info p {
  font-size: 0.8rem; color: var(--accent-color);
  letter-spacing: 0.1em; text-transform: uppercase;
}

/* --- ARCHDAILY STYLE PROJECT PAGE --- */
.archdaily-hero {
  height: 100vh;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.archdaily-hero img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.archdaily-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.3);
}
.archdaily-title {
  position: relative;
  z-index: 2;
  color: #fff;
  font-size: clamp(3rem, 6vw, 6rem);
  text-align: center;
  text-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

/* Info Bar */
.project-info-bar {
  border-bottom: 1px solid rgba(136, 114, 109, 0.2);
  padding: 2rem 0;
}
.project-info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}
.info-col h5 {
  font-family: var(--font-body);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-color);
  margin-bottom: 0.5rem;
}
.info-col p {
  font-family: var(--font-heading);
  font-size: 1.3rem;
}

/* Description */
.project-description {
  max-width: 800px;
  margin: 4rem auto;
  font-size: 1.2rem;
}
.project-description p { margin-bottom: 1.5rem; }
.project-description p:first-of-type {
  font-size: 1.5rem;
  line-height: 1.6;
  font-weight: 400;
  font-family: var(--font-heading);
}

/* Masonry Photo Gallery */
.masonry-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin: 4rem 0;
}
.masonry-item {
  position: relative;
  overflow: hidden;
  cursor: pointer;
}
.masonry-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease, filter 0.4s ease;
}
.masonry-item:hover img {
  transform: scale(1.02);
  filter: brightness(0.9);
}
/* Variations to look like masonry */
.masonry-item:nth-child(3n) { grid-column: span 2; }
@media (max-width: 768px) {
  .masonry-grid { grid-template-columns: 1fr; }
  .masonry-item:nth-child(3n) { grid-column: span 1; }
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.lightbox.active {
  opacity: 1;
  pointer-events: auto;
}
.lightbox img {
  max-width: 90%;
  max-height: 90vh;
  object-fit: contain;
}
.lightbox-close {
  position: absolute;
  top: 2rem;
  right: 2rem;
  background: none;
  border: none;
  color: #fff;
  font-size: 2rem;
  cursor: pointer;
}

/* Technical Drawings SVGs */
.tech-drawings-section {
  padding: 6rem 0;
  background-color: var(--surface-color);
}
.section-label {
  font-family: var(--font-body);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-color);
  margin-bottom: 1rem;
}
.tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 4rem;
}
.tech-item {
  background: #fff;
  padding: 1rem;
  border: 1px solid rgba(0,0,0,0.05);
}
.tech-item img {
  width: 100%;
  height: auto;
  border: 1px solid #eee;
  /* Filter strictly applied to force pure B&W lines */
  filter: grayscale(100%) contrast(1.2);
}
.tech-caption {
  margin-top: 1rem;
  text-align: center;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  color: #666;
}
[data-theme="dark"] .tech-item { background: #111; border-color: #222; }
[data-theme="dark"] .tech-item img { filter: invert(1) grayscale(100%) contrast(1.2); border-color: #333;}
[data-theme="dark"] .tech-caption { color: #aaa; }
@media (max-width: 768px) { .tech-grid { grid-template-columns: 1fr; } }

/* Next Project CTA */
.next-project-cta {
  text-align: center;
  padding: 6rem 0;
}

/* --- CONTACT FORM SECTION --- */
.contact-section {
  background-color: #141210;
  color: #fff;
  padding: 6rem 0;
  text-align: center;
}
[data-theme="dark"] .contact-section { background-color: #0d0b0a; }

.contact-section h2 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: 3rem;
}
.contact-section h2 em {
  font-style: italic;
  font-family: var(--font-heading);
  color: var(--accent-color);
}
.form-container {
  max-width: 800px;
  margin: 0 auto;
  text-align: left;
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}
.form-group.full-width { grid-column: 1 / -1; }
.form-control {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid rgba(255,255,255,0.2);
  padding: 1rem 0;
  color: #fff;
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color 0.3s ease;
}
.form-control:focus {
  outline: none;
  border-color: var(--accent-color);
}
.form-control::placeholder {
  color: rgba(255,255,255,0.4);
}
select.form-control {
  appearance: none;
  border-radius: 0;
}
select.form-control option { background: #141210; color: #fff;}

.submit-wrap { text-align: center; margin-top: 3rem;}
.btn-submit {
  background-color: var(--accent-color);
  color: #141210;
  border: 1px solid var(--accent-color);
  font-weight: 500;
  font-family: var(--font-body);
}
.btn-submit:hover {
  background-color: #fff;
  border-color: #fff;
  color: #141210;
}
.submit-note {
  display: block;
  margin-top: 1rem;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
  font-style: italic;
}
@media (max-width: 768px) { .form-grid { grid-template-columns: 1fr; } }

/* Footer */
footer {
  padding: 5rem 5% 3rem;
  background-color: var(--surface-color);
  font-size: 0.9rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  max-width: 1440px;
  margin: 0 auto;
  border-bottom: 1px solid rgba(136, 114, 109, 0.2);
  padding-bottom: 3rem;
}
.footer-brand h3 { font-size: 2rem; margin-bottom: 1rem; }
.footer-nav ul, .footer-contact ul { list-style: none; }
.footer-nav li, .footer-contact li { margin-bottom: 0.8rem; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  padding-top: 2rem;
  max-width: 1440px;
  margin: 0 auto;
  opacity: 0.6;
  font-size: 0.8rem;
}

/* Page Components */
.page-header {
  height: 40vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background-color: var(--surface-color);
  padding: 0 5%;
}
.page-header h1 {
  font-size: clamp(3rem, 6vw, 5rem);
  margin-top: 4rem;
}
.page-header p {
  font-size: 1.1rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-top: 1rem;
  color: var(--accent-color);
}

/* Services and Others */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: block; }
  .desktop-controls { display: none; }
  .mobile-controls { display: flex; align-items: center; gap: 1rem; position: absolute; right: 5%; top: 1.5rem; z-index: 200;}
  .content-grid { grid-template-columns: 1fr; gap: 3rem; }
  .portfolio-grid { grid-template-columns: 1fr; }
  .portfolio-card:nth-child(even) { transform: translateY(0); }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; gap: 1rem; align-items: center; }
  .whatsapp-float { width: 50px; height: 50px; font-size: 1.6rem; bottom: 20px; right: 20px; }
  .back-to-top { bottom: 80px; right: 25px; }
}
.services-list { max-width: 900px; margin: 0 auto; }
.service-item { border-bottom: 1px solid rgba(136, 114, 109, 0.3); padding: 3rem 0; display: flex; align-items: baseline; gap: 2rem; }
.service-number { font-family: var(--font-heading); font-size: 1.5rem; color: var(--accent-color); }
.service-title { font-size: clamp(2rem, 4vw, 3rem); }

/* Contact map */
.map-container { width: 100%; height: 500px; margin-top: 4rem; filter: grayscale(100%) contrast(1.2); transition: filter 0.3s ease; }
[data-theme="dark"] .map-container { filter: grayscale(100%) invert(90%) contrast(1.2); }
.map-container iframe { width: 100%; height: 100%; border: none; }