/* Reset and base styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Inter', sans-serif;
}

body {
  background-color: #fefefe;
  color: #333;
  line-height: 1.6;
  font-size: 16px;
}

/* Container for consistent padding */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
header {
  background-color: #111; /* Dark background for contrast */
  color: #f5f1e7; /* Warm off-white */
  padding: 20px 0;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.logo img {
  height: 60px; /* Adjust based on logo aspect */
  width: auto;
  filter: drop-shadow(0 0 2px rgba(255, 215, 0, 0.7)); /* subtle gold glow */
}

nav ul {
  display: flex;
  list-style: none;
  gap: 25px;
}

nav ul li a {
  color: #f5f1e7;
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease;
}

nav ul li a:hover,
nav ul li a:focus {
  color: #d4af37; /* Gold highlight */
}

/* Hero Section */
#hero {
  background: linear-gradient(135deg, #d4af37 0%, #f5f1e7 100%);
  color: #111;
  padding: 80px 20px;
  text-align: center;
  box-shadow: inset 0 0 40px rgba(255, 255, 255, 0.3);
}

.hero-text h1 {
  font-size: 2.8rem;
  font-weight: 700;
  margin-bottom: 20px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  text-shadow: 1px 1px 4px rgba(0,0,0,0.2);
}

.hero-text p {
  font-size: 1.3rem;
  margin-bottom: 30px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-btn {
  display: inline-block;
  background-color: #111;
  color: #d4af37;
  padding: 12px 30px;
  font-weight: 700;
  border-radius: 40px;
  text-decoration: none;
  margin: 10px 10px 0 10px;
  box-shadow: 0 3px 8px rgba(0,0,0,0.3);
  transition: background-color 0.3s ease, color 0.3s ease;
}

.hero-btn:hover,
.hero-btn:focus {
  background-color: #d4af37;
  color: #111;
  box-shadow: 0 5px 15px rgba(212,175,55,0.6);
}

/* Main Content Sections */
.content-section {
  padding: 60px 20px;
}

.light-bg {
  background-color: #f9f6f0;
}

h2 {
  font-size: 2.4rem;
  font-weight: 700;
  color: #d4af37;
  margin-bottom: 20px;
  text-align: center;
}

/* Grid for model cards */
.grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.card {
  background-color: white;
  border-radius: 10px;
  padding: 25px;
  box-shadow: 0 6px 18px rgba(212,175,55,0.15);
  text-align: center;
  transition: transform 0.3s ease;
}

.card:hover {
  transform: translateY(-6px);
}

.card h3 {
  color: #b8860b; /* Dark goldenrod */
  margin-bottom: 15px;
  font-weight: 700;
}

.card p {
  color: #555;
  font-size: 1rem;
}

/* Impact Section */
.impact-section {
  background-color: #f4f1ea;
  padding: 60px 20px;
}

.impact-block h3 {
  color: #b8860b;
  margin-top: 25px;
  font-weight: 700;
  font-size: 1.8rem;
}

.project-list {
  list-style-type: none;
  padding-left: 0;
  margin-top: 15px;
  font-size: 1rem;
  color: #444;
}

.project-list li {
  margin-bottom: 25px;
}

.project-list ul {
  list-style-type: disc;
  margin-left: 20px;
  margin-top: 8px;
}

.project-list a {
  color: #d4af37;
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease;
}

.project-list a:hover,
.project-list a:focus {
  color: #b8860b;
  text-decoration: underline;
}

.video-container {
  margin-top: 20px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 6px 20px rgba(0,0,0,0.1);
}

.impact-section {
  padding: 2rem 1rem;
  background: #f9f9f9;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: #333;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  font-size: 2.4rem;
  margin-bottom: 0.5rem;
  font-weight: 700;
  color: #2c3e50;
}

.section-intro {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 2rem auto;
  font-size: 1.1rem;
  color: #555;
}

.impact-columns {
  display: flex;
  gap: 3rem;
  justify-content: space-between;
  flex-wrap: wrap;
}

.impact-column {
  flex: 1 1 45%;
  background: #fff;
  padding: 1.5rem 2rem;
  border-radius: 10px;
  box-shadow: 0 6px 12px rgba(0,0,0,0.1);
}

.impact-column h3 {
  font-size: 1.6rem;
  margin-bottom: 0.8rem;
  color: #2980b9;
}

.project-list {
  list-style: none;
  padding-left: 0;
  margin-top: 0;
}

.project-list > li {
  margin-bottom: 1.4rem;
}

.project-list ul {
  list-style: none;
  padding-left: 1.2rem;
  margin-top: 0.3rem;
  margin-bottom: 0.5rem;
}

.project-list ul li::before {
  content: "•";
  color: #2980b9;
  font-weight: bold;
  display: inline-block; 
  width: 1em;
  margin-left: -1em;
}

a {
  color: #2980b9;
  text-decoration: none;
  font-weight: 600;
}

a:hover {
  text-decoration: underline;
}

.video-container iframe {
  border-radius: 8px;
  border: none;
  box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.testimonial {
  margin-top: 2rem;
  font-style: italic;
  background-color: #eaf2f8;
  padding: 1rem 1.5rem;
  border-left: 5px solid #2980b9;
  border-radius: 5px;
  color: #34495e;
}

.testimonial footer {
  text-align: right;
  font-weight: 600;
  margin-top: 0.5rem;
  color: #2c3e50;
  font-size: 0.95rem;
}

/* Responsive for smaller screens */
@media (max-width: 768px) {
  .impact-columns {
    flex-direction: column;
  }

  .impact-column {
    flex: 1 1 100%;
  }
}


/* Footer */
footer {
  background-color: #111;
  color: #f5f1e7;
  padding: 40px 20px;
  text-align: center;
  font-size: 0.95rem;
  line-height: 1.5;
  margin-top: 50px;
}

footer a {
  color: #d4af37;
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease;
}

footer a:hover,
footer a:focus {
  color: #b8860b;
  text-decoration: underline;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    gap: 20px;
  }
  
  nav ul {
    flex-direction: column;
    gap: 15px;
  }

  .hero-text h1 {
    font-size: 2rem;
  }

  .hero-text p {
    font-size: 1.1rem;
  }

  .grid-4 {
    grid-template-columns: 1fr;
  }
}