/* ====== CSS Variables ====== */
:root {
    --color-primary: #0077cc;
    --color-primary-dark: #005fa3;
    --color-secondary: #f39c12;
    --color-bg-light: #f9f9f9;
    --color-bg-lighter: #f4f4f4;
    --color-text-dark: #333333;
    --color-text-muted: #666666;
    --color-white: #ffffff;
    --border-radius: 8px;
    --transition-speed: 0.3s;
  }
  
  /* ====== Basic Reset ====== */
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: Arial, sans-serif;
    background-color: var(--color-bg-lighter);
    line-height: 1.6;
    color: var(--color-text-dark);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
  }
  
  /* ====== Header ====== */
  header {
    background: var(--color-text-muted);
    color: var(--color-white);
    padding: 20px;
    text-align: center;
  }
  
  header h1 {
    font-size: 2.5rem;
  }
  
  /* ====== Navigation ====== */
  nav {
    background-color: var(--color-bg-light);
    padding: 10px 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  }
  
  nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 20px;
    padding: 0;
    margin: 0;
  }
  
  nav ul li a {
    text-decoration: none;
    color: var(--color-text-dark);
    font-weight: bold;
    padding: 8px 12px;
    border-radius: var(--border-radius);
    transition: background-color var(--transition-speed), color var(--transition-speed);
  }
  
  nav ul li a:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
  }
  
  /* ====== Section Infographic Banner ====== */
  .infographic-banner {
    display: flex;
    align-items: center;
    gap: 12px;
    background-color: var(--color-bg-light);
    padding: 16px 20px;
    margin-bottom: 30px;
    border-left: 6px solid var(--color-primary);
    border-radius: var(--border-radius);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--color-primary);
  }
  
  .infographic-banner svg {
    width: 36px;
    height: 36px;
    fill: var(--color-primary);
    flex-shrink: 0;
  }
  
  /* ====== Home Section ====== */
  #home {
    background: url('drugandAI.webp') no-repeat center center/cover;
    color: var(--color-blue);
    padding: 100px 20px;
    text-align: center;
  }
  
  #home h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    text-shadow: 1px 1px 4px rgba(0,0,0,0.6);
  }
  
  #home p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
  }
  
  /* ====== Articles Section ====== */
  #articles {
    padding: 50px 20px;
    background-color: var(--color-white);
    text-align: center;
    max-width: 900px;
    margin: 0 auto 50px auto;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  }
  
  #articles h2 {
    font-size: 2.5rem;
    margin-bottom: 30px;
    color: var(--color-primary);
  }
  
  article {
    background-color: var(--color-bg-light);
    padding: 20px;
    margin-bottom: 30px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    text-align: left;
  }
  
  article h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: var(--color-primary-dark);
  }
  
  article p {
    font-size: 1rem;
    margin-bottom: 15px;
    line-height: 1.6;
    color: var(--color-text-muted);
  }
  
  article a {
    display: inline-block;
    text-decoration: none;
    color: var(--color-secondary);
    font-weight: bold;
    margin-top: 10px;
    transition: color var(--transition-speed);
  }
  article a:hover {
    color: var(--color-primary);
  }
  
  /* ====== Toggle Read More Button ====== */
  button.toggle-btn {
    padding: 8px 16px;
    background-color: var(--color-primary);
    border: none;
    color: var(--color-white);
    font-size: 1.1rem;
    cursor: pointer;
    border-radius: var(--border-radius);
    transition: background-color var(--transition-speed);
  }
  button.toggle-btn:hover {
    background-color: var(--color-primary-dark);
  }
  
  /* ====== Long Content with Fade Animation ====== */
  .long-content {
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
    margin-top: 10px;
    color: var(--color-text-dark);
  }
  
  .long-content.show {
    display: block;
    opacity: 1;
  }
  
  /* ====== Contact Section ====== */
  #contact {
    padding: 50px 20px;
    background-color: var(--color-bg-lighter);
    text-align: center;
    max-width: 700px;
    margin: 0 auto 50px auto;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  }
  
  #contact h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--color-primary);
  }
  
  form {
    text-align: left;
    background-color: var(--color-white);
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  }
  
  label {
    display: block;
    margin-bottom: 6px;
    font-weight: bold;
    color: var(--color-text-dark);
  }
  
  input[type="text"],
  input[type="email"],
  textarea {
    width: 100%;
    padding: 10px;
    margin-bottom: 18px;
    border: 1px solid #ccc;
    border-radius: var(--border-radius);
    font-size: 1rem;
    resize: vertical;
    transition: border-color var(--transition-speed);
  }
  
  input[type="text"]:focus,
  input[type="email"]:focus,
  textarea:focus {
    border-color: var(--color-primary);
    outline: none;
  }
  
  button[type="submit"] {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 12px 24px;
    border: none;
    font-size: 1.1rem;
    cursor: pointer;
    border-radius: var(--border-radius);
    transition: background-color var(--transition-speed);
    display: block;
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
  }
  
  button[type="submit"]:hover {
    background-color: var(--color-primary-dark);
  }
  
  #response-message {
    margin-top: 15px;
    font-weight: 600;
    text-align: center;
    display: none;
  }
  
  /* ====== Footer ====== */
  footer {
    background-color: var(--color-text-dark);
    color: var(--color-white);
    text-align: center;
    padding: 15px 10px;
    font-size: 0.9rem;
    margin-top: auto;
  }
  
  /* ====== Responsive ====== */
  @media (max-width: 768px) {
    nav ul {
      flex-direction: column;
      gap: 10px;
    }
  
    #home {
      padding: 60px 10px;
    }
  
    #articles, #contact {
      padding: 30px 10px;
      margin: 0 10px 50px 10px;
    }
  }
  /* ====== Toggle Read More Button ====== */
button.toggle-btn {
    padding: 8px 16px;
    background-color: var(--color-primary);
    border: none;
    color: var(--color-white);
    font-size: 1.1rem;
    cursor: pointer;
    border-radius: var(--border-radius);
    transition: background-color var(--transition-speed);
}
button.toggle-btn:hover {
    background-color: var(--color-primary-dark);
}

/* ====== Long Content with Fade Animation ====== */
.long-content {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.5s ease, opacity 0.5s ease;
  }
  
  .long-content.show {
    max-height: 500px; 
    opacity: 1;
  }
  
/* ====== General Container ====== */
.container {
    max-width: 1000px; 
    margin: 0 auto;
    padding: 0 20px;
  }

 .section-frame {
    padding: 50px 20px;
    background-color: var(--color-white);
    text-align: left; /* <=== ΕΔΩ γίνεται η στοίχιση κειμένου στο κέντρο */
    max-width: 900px;
    margin: 0 auto 50px auto;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}
#about-blog {
  background-color: #f9f9f9; /* ανοιχτό γκρι */
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  max-width: 800px;
  margin: 40px auto;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

#about-blog h2 {
  text-align: center;
  color: #f1f4f6;
  margin-bottom: 20px;
}

#about-blog p {
  line-height: 1.6;
  color: #f1f4f6;
  margin-bottom: 15px;
}

#about-blog ul {
  list-style-type: disc;
  color: #f1f4f6;
  padding-left: 20px;
  margin-bottom: 15px;
}

#about-blog li {
  margin-bottom: 10px;
}