:root {
  --bg-color: #000000;
  --text-primary: #f5f5f7;
  --text-secondary: #86868b;
  --accent: #2997ff; /* Apple-ish blue for subtle links/buttons if needed */
  --font-main:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu,
    Cantarell, "Helvetica Neue", sans-serif;
  --section-spacing: 120px;
  --transition-speed: 0.6s;
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1,
h2,
h3 {
  font-weight: 600;
  letter-spacing: -0.02em;
}

.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Utilities for animations */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1), transform 1s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* Header & Nav */
.main-nav {
  position: absolute; /* Integrate into hero */
  top: 0;
  left: 0;
  width: 100%;
  padding: 20px 0;
  z-index: 10;
  background: transparent;
  backdrop-filter: blur(0px); /* Initially transparent */
  transition: background 0.3s ease;
}

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

.logo {
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.nav-links {
  display: flex;
  gap: 30px;
  align-items: center;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: color 0.3s;
}

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

.lang-switch {
  display: flex;
  gap: 10px;
  margin-left: 20px;
  border-left: 1px solid rgba(255,255,255,0.2);
  padding-left: 20px;
}

.lang-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-family: var(--font-main);
  font-size: 0.9rem;
  padding: 0;
  transition: color 0.3s;
}

.lang-btn.active, .lang-btn:hover {
  color: var(--text-primary);
  font-weight: 600;
}

/* Hero Section */
.hero-section {
  height: 100vh;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background-image: url('hero-bg.png');
  background-size: cover;
  background-position: center;
  position: relative;
  overflow: hidden;
}

.hero-section::after {
  content: '';
  position: absolute;
  top: 0; 
  left: 0;
  right: 0; 
  bottom: 0;
  background: rgba(0,0,0,0.4); /* Overlay for text readability */
  z-index: 1;
}

.hero-section .container {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-title {
  font-size: clamp(3rem, 8vw, 6rem);
  line-height: 1.05;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #fff 0%, #b0b0b0 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.hero-subtitle {
  font-size: clamp(1.2rem, 3vw, 1.8rem);
  color: #d0d0d0;
  max-width: 600px;
  margin: 0 auto;
  font-weight: 400;
}
/* Sections */
.section {
  padding: var(--section-spacing) 0;
}

.section-title {
  font-size: 3rem;
  margin-bottom: 60px;
  color: var(--text-primary);
}

/* Mission Section */
.mission-section {
  text-align: center;
}

.mission-statement {
  font-size: 2rem;
  line-height: 1.4;
  color: var(--text-secondary);
  max-width: 800px;
  margin: 0 auto;
}

/* Approach Section */
.approach-section {
  background: #0a0a0a; /* Subtle contrast */
}

.grid-layout {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 40px;
}

.grid-item {
  background: rgba(255,255,255,0.03);
  padding: 40px;
  border-radius: 20px;
  transition: background 0.3s;
}

.grid-item:hover {
  background: rgba(255,255,255,0.05);
}

.grid-item h3 {
  font-size: 1.5rem;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.grid-item p {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* Contact Section */
.contact-section {
  text-align: center;
  padding-bottom: 160px;
}

.contact-section p {
  font-size: 1.5rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
}

.cta-button {
  display: inline-block;
  background: #fff;
  color: #000;
  padding: 18px 40px;
  border-radius: 40px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  transition: transform 0.3s cubic-bezier(0.3, 1, 0.8, 1);
}

.cta-button:hover {
  transform: scale(1.05);
}

/* Footer */
.main-footer {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 40px 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-content {
  display: flex;
  justify-content: space-between;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  margin-left: 20px;
}

.footer-links a:hover {
  text-decoration: underline;
}

/* Mobile Adjustments */
@media (max-width: 768px) {
  .hero-title {
    font-size: 3rem;
  }
  
  .section-title {
    font-size: 2.5rem;
  }
  
  .mission-statement {
    font-size: 1.5rem;
  }
  
  .footer-content {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }
  
  .footer-links a {
    margin: 0 10px;
  }
}