/* Top Navigation Menu, remains visible while scrolling with sticky position */
.top-menu {
  width: 100%;
  background: linear-gradient(135deg, var(--blue-main), var(--blue-accent));
  padding: 14px 0;
  display: flex;
  justify-content: center;
  gap: 50px;
  position: sticky;  
  top: 0;
  z-index: 1000;
}

.top-menu a {
  color: white;
  font-weight: 600;
  text-decoration: none;
  font-size: 1.05em;
  letter-spacing: 0.5px;
  transition: opacity 0.2s ease;
}

.top-menu a:hover {
  opacity: 0.75;
}

:root {
  --blue-main: #1f4e79;
  --blue-accent: #4a90d9;
  --blue-soft: #f5f9fc;
  --text-main: #1f2937;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  margin: 0;
  background-color: #ffffff;
  color: #1f2937;
}

/* Header */
.top-header {
  background: linear-gradient(135deg, var(--blue-main), var(--blue-accent));
  color: white;
  text-align: center;
  padding: 80px 20px;
}


.top-header h1 {
  font-size: 2.6em;
  margin-bottom: 10px;
}

/* Full-width section background */
.section {
  width: 100%;
  padding: 80px 0;
}

/* Centered content */
.section-inner {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Light blue full-width background */
.gray {
  background-color: var(--blue-soft);
}

.section:not(.gray) {
  background-color: #ffffff;
}

/* Workshop overview - Desktop layout */
.overview-content {
  display: flex;
  align-items: center; /* vertically center text and image */
  justify-content: space-between; /* space between text and image */
  gap: 20px; /* optional spacing */
}

.logo img {
  width: 450px;
  border-radius: 16px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.08);
  height: auto;
}

/* Workshop overview - Mobile layout */
@media (max-width: 768px) {
  .overview-content {
    flex-direction: column;  /* stack items vertically */
    text-align: center;      /* center text for cleaner look */
  }

  .logo img {
    max-width: 250px;        /* optional: smaller logo on mobile */
  }

  .supporters-logos {
    gap: 25px;
  }
  .supporters-logos img {
    max-width: 130px;
  }

}

/* Organizing committee */
.committee-member {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 50px;
  gap: 50px;
  flex-wrap: wrap;
}

.committee-left h3 {
  color: #1e3a8a;
}

.committee-right img {
  width: 170px;
  height: 170px;
  object-fit: cover;
  border-radius: 16px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.08);
}

/* Special Journal Section */
.journal-content {
  display: flex;
  align-items: center; /* vertically center text and image */
  justify-content: space-between; /* space between text and image */
  gap: 20px; /* optional spacing */
}

.journal-image img {
  width: 220px;          /* controls visual size */
  height: auto;          /* preserves original proportions */
  object-fit: contain;   /* prevents distortion */
  border-radius: 8px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.12);
}

.journal-text {
  flex: 1;
  min-width: 250px;
}

@media (max-width: 768px) {
  .journal-content {
    flex-direction: column;   /* stack image + text vertically */
    text-align: center;
  }

  .journal-image img {
    width: 180px;            /* smaller size on mobile */
  }
}

/* Typography */
h2 {
  font-size: 2em;
  color: var(--blue-main);
}

ul {
  margin-left: 20px;
  line-height: 1.8;
}

/* Links */
a {
  color: #1e88e5;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Supporters Section */
.supporters-logos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: 30px;
  margin-top: 40px;
  align-items: center;
  justify-items: center;
}

.supporters-logos img {
  width: 100%;
  max-width: 130px;  /* smaller logos */
  max-height: 85px;
  object-fit: contain;
  filter: grayscale(100%);
  opacity: 0.85;
  transition: all 0.3s ease;
}

.supporters-logos img:hover {
  filter: grayscale(0%);
  opacity: 1;
  transform: scale(1.05);
}

/* Footer */
footer {
  text-align: center;
  padding: 60px 20px;
  background: linear-gradient(135deg, var(--blue-main), var(--blue-accent));
  color: white;
}