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

body {
  font-family: 'Segoe UI', sans-serif;
  background: #f4f4f4;
  color: #333;
  line-height: 1.6;
}

header, footer {
  background: #003366;
  color: white;
  padding: 1rem;
  text-align: center;
}

header img {
  max-width: 120px;
  height: auto;
  margin-bottom: 0.5rem;
}

main {
  max-width: 960px;
  margin: auto;
  padding: 2rem;
}

section {
  margin-bottom: 2rem;
}

ul {
  list-style: none;
  padding-left: 0;
}

ul li {
  margin-bottom: 0.5rem;
}

form input,
form textarea {
  width: 100%;
  padding: 0.7rem;
  margin-bottom: 1rem;
  border: 1px solid #ccc;
  border-radius: 4px;
}

button {
  background: #003366;
  color: white;
  border: none;
  padding: 0.7rem 1.2rem;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.3s ease;
}

button:hover {
  background: #0055aa;
}

/* 📱 Responsive Design */
@media (max-width: 768px) {
  main {
    padding: 1rem;
  }

  header img {
    max-width: 80px;
  }

  form input,
  form textarea {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 16px;
  }

  header h1 {
    font-size: 1.5rem;
  }

  button {
    width: 100%;
  }
}


.grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: auto;
  padding: 2rem;
}

.grid-item {
  background: white;
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0,0,0,0.05);
}

@media (max-width: 768px) {
  .grid-container {
    grid-template-columns: 1fr;
    padding: 1rem;
  }
}



/* Layout Grid */
.page-grid {
  display: grid;
  grid-template-areas:
    "header"
    "main"
    "footer";
  grid-template-columns: 1fr;
  grid-template-rows: auto 1fr auto;
  min-height: 100vh;
}

/* Header */
.header {
  grid-area: header;
  background: #003366;
  color: white;
  text-align: center;
  padding: 1rem;
}

.header img {
  max-width: 100px;
  height: auto;
  margin-bottom: 0.5rem;
}

/* Main Content */
.main-content {
  grid-area: main;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  padding: 2rem;
  max-width: 1200px;
  margin: auto;
}

.grid-item {
  background: white;
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0,0,0,0.05);
}

/* Footer */
.footer {
  grid-area: footer;
  background: #003366;
  color: white;
  text-align: center;
  padding: 1rem;
}

/* Form Styling */
form input,
form textarea {
  width: 100%;
  padding: 0.7rem;
  margin-bottom: 1rem;
  border: 1px solid #ccc;
  border-radius: 4px;
}

button {
  background: #003366;
  color: white;
  border: none;
  padding: 0.7rem 1.2rem;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.3s ease;
}

button:hover {
  background: #0055aa;
}

/* Responsive */
@media (max-width: 768px) {
  .main-content {
    grid-template-columns: 1fr;
    padding: 1rem;
  }

  .header img {
    max-width: 80px;
  }

  button {
    width: 100%;
  }
}