/* ============================================
   ADB-DutchCham Website - Main Stylesheet
   ============================================ */

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

:root {
  --primary-color: #FF8C00;
  --secondary-color: #003366;
  --accent-color: #00A86B;
  --text-color: #333;
  --light-bg: #f5f5f5;
  --white: #ffffff;
  --border-color: #ddd;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

html {
  scroll-behavior: smooth;
}

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-color: var(--white);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
}

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

.logo {
  font-size: 1.8rem;
  font-weight: bold;
  color: var(--secondary-color);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo:hover {
  color: var(--primary-color);
}

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

nav a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  transition: color 0.3s ease;
  font-size: 0.95rem;
}

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

.login-btn {
  background-color: var(--primary-color);
  color: var(--white);
  padding: 0.75rem 1.5rem;
  border-radius: 4px;
  text-decoration: none;
  font-weight: 600;
  transition: background-color 0.3s ease;
}

.login-btn:hover {
  background-color: #E67E00;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-color);
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
  background: linear-gradient(rgba(0, 51, 102, 0.5), rgba(0, 51, 102, 0.5)), 
              url('../images/hero-banner-singapore.webp') center/cover no-repeat;
  color: var(--white);
  padding: 8rem 2rem;
  text-align: center;
  min-height: 500px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  font-weight: 700;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero p {
  font-size: 1.5rem;
  margin-bottom: 2rem;
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
}

.cta-buttons {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

.cta-btn {
  background-color: var(--primary-color);
  color: var(--white);
  padding: 1rem 2rem;
  border: none;
  border-radius: 4px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: all 0.3s ease;
}

.cta-btn:hover {
  background-color: #E67E00;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.scroll-indicator {
  margin-top: 2rem;
  font-size: 0.9rem;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(10px); }
}

/* ============================================
   MAIN CONTENT
   ============================================ */

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 4rem 0;
  border-bottom: 1px solid var(--border-color);
}

.section:last-child {
  border-bottom: none;
}

.section-title {
  font-size: 2.5rem;
  color: var(--secondary-color);
  margin-bottom: 2rem;
  text-align: center;
  font-weight: 700;
}

.section-subtitle {
  font-size: 1.3rem;
  color: var(--primary-color);
  margin-bottom: 1.5rem;
  font-weight: 600;
}

/* ============================================
   EVENTS GRID
   ============================================ */

.events-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.event-card {
  background-color: var(--light-bg);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.event-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

.event-card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background-color: #e0e0e0;
}

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

.event-date {
  color: var(--primary-color);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.event-card h3 {
  color: var(--secondary-color);
  margin-bottom: 0.5rem;
  font-size: 1.2rem;
}

.event-card p {
  color: #666;
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

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

.event-link:hover {
  color: #E67E00;
}

/* ============================================
   TESTIMONIALS
   ============================================ */

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.testimonial-card {
  background-color: var(--light-bg);
  padding: 2rem;
  border-radius: 8px;
  border-left: 4px solid var(--primary-color);
  box-shadow: var(--shadow);
}

.testimonial-text {
  font-style: italic;
  color: #555;
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

.testimonial-author {
  font-weight: 600;
  color: var(--secondary-color);
  margin-bottom: 0.25rem;
}

.testimonial-title {
  font-size: 0.9rem;
  color: var(--primary-color);
}

/* ============================================
   NEWSLETTER SECTION
   ============================================ */

.newsletter-section {
  background-color: var(--secondary-color);
  color: var(--white);
  padding: 3rem 2rem;
  border-radius: 8px;
  margin: 2rem 0;
}

.newsletter-section h3 {
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.newsletter-form {
  display: flex;
  gap: 0.5rem;
  max-width: 500px;
  flex-wrap: wrap;
}

.newsletter-form input {
  flex: 1;
  min-width: 200px;
  padding: 0.75rem;
  border: none;
  border-radius: 4px;
  font-size: 1rem;
}

.newsletter-form button {
  padding: 0.75rem 1.5rem;
  background-color: var(--primary-color);
  color: var(--white);
  border: none;
  border-radius: 4px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.newsletter-form button:hover {
  background-color: #E67E00;
}

/* ============================================
   FOOTER
   ============================================ */

footer {
  background-color: var(--secondary-color);
  color: var(--white);
  padding: 3rem 2rem;
  margin-top: 4rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
}

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

.footer-section h4 {
  margin-bottom: 1rem;
  color: var(--primary-color);
}

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

.footer-section ul li {
  margin-bottom: 0.5rem;
}

.footer-section a {
  color: var(--white);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.social-links {
  display: flex;
  gap: 1.5rem;
  margin-top: 1rem;
}

.social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  transition: background-color 0.3s ease;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 2rem;
  text-align: center;
  font-size: 0.9rem;
}

.footer-bottom a {
  color: var(--white);
  text-decoration: none;
  margin: 0 1rem;
  transition: color 0.3s ease;
}

.footer-bottom a:hover {
  color: var(--primary-color);
}

/* ============================================
   CONTENT PAGES
   ============================================ */

.page-header {
  background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
  color: var(--white);
  padding: 3rem 2rem;
  margin-bottom: 2rem;
}

.page-header h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.page-header p {
  font-size: 1.1rem;
  opacity: 0.9;
}

.page-content {
  line-height: 1.8;
  color: #555;
}

.page-content h2 {
  color: var(--secondary-color);
  margin: 2rem 0 1rem;
  font-size: 1.8rem;
}

.page-content h3 {
  color: var(--primary-color);
  margin: 1.5rem 0 0.75rem;
  font-size: 1.3rem;
}

.page-content p {
  margin-bottom: 1rem;
}

.page-content ul,
.page-content ol {
  margin-left: 2rem;
  margin-bottom: 1rem;
}

.page-content li {
  margin-bottom: 0.5rem;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
  .header-container {
    padding: 1rem;
  }

  nav ul {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    flex-direction: column;
    background-color: var(--white);
    box-shadow: var(--shadow);
    padding: 1rem;
    gap: 0;
  }

  nav ul.active {
    display: flex;
  }

  nav a {
    padding: 0.75rem 0;
    display: block;
  }

  .menu-toggle {
    display: block;
  }

  .hero {
    padding: 4rem 1rem;
  }

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

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

  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .cta-btn {
    width: 100%;
    max-width: 300px;
  }

  .section {
    padding: 2rem 0;
  }

  .section-title {
    font-size: 1.8rem;
  }

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

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

  .newsletter-form {
    flex-direction: column;
  }

  .newsletter-form input,
  .newsletter-form button {
    width: 100%;
  }

  .page-header h1 {
    font-size: 1.8rem;
  }

  .footer-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .header-container {
    padding: 0.75rem;
  }

  .logo {
    font-size: 1.3rem;
  }

  .hero {
    padding: 2rem 1rem;
    min-height: 300px;
  }

  .hero h1 {
    font-size: 1.5rem;
  }

  .hero p {
    font-size: 0.9rem;
  }

  .section-title {
    font-size: 1.5rem;
  }

  main {
    padding: 0 1rem;
  }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

a:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

button:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

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

.text-center {
  text-align: center;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.hidden {
  display: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}