:root {
  --primary: #0f172a;
  --primary-light: #1e293b;
  --secondary: #2563eb;
  --secondary-hover: #1d4ed8;
  --accent: #22c55e;
  --light: #f8fafc;
  --white: #ffffff;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --radius: 12px;
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--light);
  color: var(--text-main);
  line-height: 1.6;
}

/* Header & Navigation */
header {
  background-color: var(--white);
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
  color: var(--primary);
  font-weight: 700;
  font-size: 1.25rem;
}

.logo img {
  width: 50px;
  height: auto;
}

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

nav ul li a {
  text-decoration: none;
  color: var(--text-main);
  font-weight: 500;
  transition: color 0.2s;
}

nav ul li a:hover, nav ul li a.active {
  color: var(--secondary);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white);
  padding: 6rem 2rem;
  text-align: center;
}

.hero-container {
  max-width: 1000px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 3.5rem;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  font-weight: 800;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: 2.5rem;
  opacity: 0.9;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

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

.btn-primary:hover {
  background-color: var(--secondary-hover);
  transform: translateY(-2px);
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--white);
  color: var(--white);
}

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

/* Sections */
section {
  padding: 5rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title h2 {
  font-size: 2.25rem;
  color: var(--primary);
  margin-bottom: 1rem;
}

.section-title p {
  color: var(--text-muted);
  font-size: 1.125rem;
}

/* Grid & Cards */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.card {
  background: var(--white);
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
  border: 1px solid var(--border);
}

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

.card h3 {
  color: var(--secondary);
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.card p {
  color: var(--text-muted);
}

/* Biometrics & Gallery */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.gallery-item {
  text-align: center;
  background: var(--white);
  padding: 1.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.gallery-item img {
  width: 100%;
  max-width: 200px;
  height: auto;
  object-fit: contain;
  margin-bottom: 1rem;
}

/* About & Credibility */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.highlight-box {
  background: linear-gradient(135deg, #eff6ff, #f0fdf4);
  padding: 3rem;
  border-radius: var(--radius);
  text-align: center;
}

/* Contact */
.contact-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.contact-info p {
  font-size: 1.125rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Footer */
footer {
  background-color: var(--primary);
  color: var(--white);
  padding: 3rem 2rem;
  text-align: center;
  margin-top: 4rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-links a {
  color: var(--white);
  text-decoration: none;
  opacity: 0.8;
  transition: opacity 0.2s;
}

.footer-links a:hover {
  opacity: 1;
}

.whatsapp-float {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background-color: #25D366;
  color: white;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  text-decoration: none;
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  transition: transform 0.3s;
}

.whatsapp-float:hover {
  transform: scale(1.1);
}

@media (max-width: 768px) {
  .nav-container {
    flex-direction: column;
    gap: 1rem;
  }
  
  nav ul {
    gap: 1rem;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .about-grid, .contact-container {
    grid-template-columns: 1fr;
  }
}