:root {
  --primary-color: #1a1a1a;
  --secondary-color: #74a1d4;
  --accent-color: #2c5f8d;
  --text-color: #333;
  --light-bg: #f8f9fa;
  --white: #ffffff;
  --shadow: 0 2px 10px rgba(0,0,0,0.1);
  --shadow-hover: 0 4px 20px rgba(0,0,0,0.15);
}

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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--white);
}

/* Header & Navigation */
header {
  background: var(--white);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
}

nav {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
  text-decoration: none;
  letter-spacing: -0.5px;
}

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

nav ul {
  display: flex;
  list-style: none;
  gap: 2rem;
}

nav a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  transition: color 0.3s;
}

nav a:hover {
  color: var(--accent-color);
}

/* Hero Section */
.hero {
  position: relative;
  height: 85vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(rgba(0,0,0,0.4), rgba(0,0,0,0.4)), url('/images/hero.jpg') center/cover;
  color: var(--white);
  text-align: center;
}

.hero-content {
  max-width: 800px;
  padding: 2rem;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  font-weight: 700;
  line-height: 1.2;
}

.hero p {
  font-size: 1.3rem;
  margin-bottom: 2rem;
  opacity: 0.95;
}

.cta-button {
  display: inline-block;
  padding: 1rem 2.5rem;
  background-color: var(--secondary-color);
  color: var(--white);
  text-decoration: none;
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: 4px;
  transition: all 0.3s;
  border: none;
  cursor: pointer;
}

.cta-button:hover {
  background-color: #c49563;
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 2rem;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 3rem;
  text-align: center;
  color: var(--primary-color);
  font-weight: 700;
}

/* Projects Carousel */
.projects-carousel {
  background-color: var(--light-bg);
  padding: 4rem 0;
}

.carousel-container {
  position: relative;
  overflow: hidden;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.carousel-track {
  display: flex;
  gap: 2rem;
  transition: transform 0.5s ease;
}

.project-card {
  min-width: calc(33.333% - 1.33rem);
  background: var(--white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.3s;
}

.project-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.project-card img {
  width: 100%;
  height: 250px;
  object-fit: cover;
}

.project-card-content {
  padding: 1.5rem;
}

.project-card h3 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
}

.project-card p {
  color: #666;
  font-size: 0.95rem;
  line-height: 1.5;
}

.carousel-controls {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
}

.carousel-btn {
  background: var(--accent-color);
  color: var(--white);
  border: none;
  width: 45px;
  height: 45px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.2rem;
  transition: all 0.3s;
}

.carousel-btn:hover {
  background: #234a6f;
}

/* Contact Form */
.contact-section {
  background-color: var(--white);
}

.contact-form {
  max-width: 600px;
  margin: 0 auto;
  background: var(--light-bg);
  padding: 2.5rem;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--primary-color);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.8rem;
  border: 2px solid #ddd;
  border-radius: 4px;
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-color);
}

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

/* Projects Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.project-item {
  background: var(--white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.3s;
}

.project-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.project-item img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

.project-item-content {
  padding: 1.5rem;
}

.project-item h3 {
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
}

.project-item .date {
  color: var(--secondary-color);
  font-size: 0.9rem;
  margin-bottom: 0.8rem;
  display: block;
}

.project-item p {
  color: #666;
  line-height: 1.6;
  margin-bottom: 1rem;
}

.project-link {
  color: var(--accent-color);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s;
}

.project-link:hover {
  color: #234a6f;
}

/* Project Detail Page */
.project-detail {
  max-width: 1000px;
  margin: 0 auto;
}

.project-header {
  margin-bottom: 2rem;
}

.project-header h1 {
  font-size: 2.8rem;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.project-meta {
  color: #666;
  font-size: 1rem;
}

.project-gallery {
  margin: 3rem 0;
}

.gallery-main {
  margin-bottom: 1rem;
}

.gallery-main img {
  width: 100%;
  height: 500px;
  object-fit: cover;
  border-radius: 8px;
}

.gallery-thumbs {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 1rem;
}

.gallery-thumbs img {
  width: 100%;
  height: 120px;
  object-fit: cover;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.3s;
  border: 3px solid transparent;
}

.gallery-thumbs img:hover,
.gallery-thumbs img.active {
  border-color: var(--accent-color);
  transform: scale(1.05);
}

.project-description {
  line-height: 1.8;
  color: var(--text-color);
  font-size: 1.1rem;
}

/* Contact Page */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-top: 2rem;
}

.contact-info {
  background: var(--light-bg);
  padding: 2rem;
  border-radius: 8px;
}

.contact-info h3 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
}

.contact-item {
  display: flex;
  align-items: start;
  margin-bottom: 1.5rem;
  gap: 1rem;
}

.contact-item-icon {
  font-weight: 700;
  color: var(--secondary-color);
  font-size: 1.3rem;
}

.contact-item-content h4 {
  font-size: 1rem;
  color: var(--primary-color);
  margin-bottom: 0.3rem;
}

.contact-item-content p {
  color: #666;
  margin: 0;
}

.map-container {
  width: 100%;
  height: 400px;
  border-radius: 8px;
  overflow: hidden;
  margin-top: 2rem;
  background: var(--light-bg);
}

.map-container iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* Footer */
footer {
  background-color: var(--primary-color);
  color: var(--white);
  padding: 3rem 0 1.5rem;
  margin-top: 4rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h3 {
  margin-bottom: 1rem;
  color: var(--secondary-color);
}

.footer-section p,
.footer-section a {
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  display: block;
  margin-bottom: 0.5rem;
  transition: color 0.3s;
}

.footer-section a:hover {
  color: var(--white);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.6);
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .hero p {
    font-size: 1.1rem;
  }
  
  nav ul {
    gap: 1rem;
  }
  
  .project-card {
    min-width: 100%;
  }
  
  .contact-wrapper {
    grid-template-columns: 1fr;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  nav {
    flex-direction: column;
    gap: 1rem;
  }
  
  nav ul {
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
  }
}