:root {
  --navy: #1f3a5f;
  --teal: #2f8f9d;
  --gold: #c9a24d;
  --bg: #f5f7fa;
  --text: #1f2937;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

header {
  background: white;
  padding: 20px indicate;
  box-shadow: 0 2px 8px rgba(0,0,0,.06);
}

.navbar {
  max-width: 1200px;
  margin: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.navbar a {
  margin-left: 22px;
  text-decoration: none;
  color: var(--navy);
  font-weight: 500;
}

.navbar a:hover { color: var(--teal); }

.hero {
  padding: 30px 20px;
  text-align: center;
  background: linear-gradient(135deg, var(--navy), var(--teal));
  color: white;
}


.hero h1 {
  font-family: 'Merriweather', serif;
  font-size: 3rem;
}
.organisers-column {
  position: sticky;
  top: 120px; /* κάτω από το header */
}


section {
  max-width: 1100px;
  margin: auto;
  padding: 70px 20px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px,1fr));
  gap: 25px;
}

.card {
  background: white;
  padding: 25px;
  border-radius: 10px;
  box-shadow: 0 10px 25px rgba(0,0,0,.05);
}

footer {
  background: var(--navy);
  color: white;
  text-align: center;
  padding: 30px;
}

.org-item {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 30px;
}

.org-item img {
  width: 60px;
  height: auto;
  filter: grayscale(100%);
  opacity: 0.85;
}

.org-item p {
  margin: 0;
  font-size: 0.95rem;
}