/* Modern, responsive design for etdasury.com */

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

:root {
  --primary-color: #2563eb;
  --primary-dark: #1e40af;
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --bg-light: #f9fafb;
  --bg-white: #ffffff;
  --border-color: #e5e7eb;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --radius: 0.5rem;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-white);
}

/* Skip to content link */
.skip-to-content {
  position: absolute;
  left: -9999px;
  z-index: 999;
}

.skip-to-content:focus {
  left: 1rem;
  top: 1rem;
  background: var(--primary-color);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  text-decoration: none;
}

/* Navigation */
nav {
  background: var(--bg-white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.logo {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
}

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

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

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

.hamburger {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-primary);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 4rem 2rem;
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  font-weight: 700;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.95;
}

.cta-phone {
  display: inline-block;
  background: white;
  color: var(--primary-color);
  padding: 1rem 2rem;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.125rem;
  box-shadow: var(--shadow-lg);
  transition: transform 0.2s, box-shadow 0.2s;
}

.cta-phone:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

/* Main Content */
main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

.content-section {
  margin-bottom: 3rem;
}

.content-section h2 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.content-section h3 {
  font-size: 1.5rem;
  margin-top: 2rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.content-section p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
  font-size: 1.0625rem;
  line-height: 1.8;
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.card {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow-md);
  transition: box-shadow 0.2s, transform 0.2s;
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card h3 {
  margin-top: 0;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

/* Micro-scenarios */
.micro-scenario {
  background: var(--bg-light);
  border-left: 4px solid var(--primary-color);
  padding: 1.5rem;
  margin: 2rem 0;
  border-radius: var(--radius);
}

.micro-scenario h4 {
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  font-size: 1.25rem;
}

/* Safety Note */
.safety-note {
  background: #fef3c7;
  border: 1px solid #fbbf24;
  border-radius: var(--radius);
  padding: 1rem 1.5rem;
  margin: 2rem 0;
  color: #92400e;
}

/* Disclosure Banner */
.disclosure-banner {
  margin: 1.25rem auto 1.25rem;
  max-width: 820px;
  background: #fff7ed;
  border: 1px solid #fdba74;
  color: #7c2d12;
  padding: 0.9rem 1.1rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  font-size: 0.98rem;
  line-height: 1.6;
}

.cta-subnote {
  margin-top: 0.75rem;
  color: rgba(255,255,255,0.9);
  font-size: 0.98rem;
}

.cta-subnote-dark {
  margin-top: 0.75rem;
  color: rgba(0,0,0,0.75);
  font-size: 0.98rem;
}

/* Map Section */
.map-section {
  margin: 3rem 0;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.map-section h2 {
  padding: 1.5rem 2rem;
  background: var(--bg-light);
  margin: 0;
  border-bottom: 1px solid var(--border-color);
}

.map-container {
  width: 100%;
  height: 320px;
  border: 0;
}

/* Video Section */
.video-section {
  margin: 3rem 0;
  text-align: center;
}

.video-wrapper {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  max-width: 800px;
  margin: 2rem auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}

.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

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

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

.footer-section h4 {
  margin-bottom: 1rem;
  color: white;
}

.footer-section ul {
  list-style: none;
}

.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color 0.2s;
}

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

.footer-bottom {
  max-width: 1200px;
  margin: 2rem auto 0;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-white);
    flex-direction: column;
    padding: 1rem 2rem;
    box-shadow: var(--shadow-md);
  }

  .nav-links.active {
    display: flex;
  }

  .hamburger {
    display: block;
  }

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

  .hero p {
    font-size: 1.125rem;
  }

  main {
    padding: 2rem 1rem;
  }

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