/* === Βασικές Ρυθμίσεις === */
body {
  margin: 0;
  padding: 0;
  font-family: "Stack Sans Text", sans-serif;
  background-color: #ffffff;
  color: rgb(18, 114, 117);
}

/* === Header === */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 5px 80px;
  background-color: rgb(255, 255, 255);
  box-shadow: 0 2px 8px rgba(18, 114, 117);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo {
  height: 100px;
  width: auto;
  cursor: pointer;
}

.site-title {
  font-size: 18px;
  font-weight: bold;
  color: rgba(18, 114, 117);
}

.nav {
  display: flex;
  gap: 22px;
}

.nav a {
  text-decoration: none;
  color: rgba(18, 114, 117);
  font-weight: 600;
  transition: 0.3s;
  padding: 5px 10px;
}

.nav a:hover {
  background-color: #007BFF;
  color: white;
  border-radius: 5px;
}

/* === Fullscreen Hero === */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
}

.hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: white;
  background-color: rgba(0,0,0,0.5);
  padding: 30px;
  border-radius: 12px;
}

.overlay h2 {
  font-size: 36px;
  margin-bottom: 10px;
}

.overlay p {
  font-size: 18px;
  margin-bottom: 20px;
}

/* === Buttons === */
.buttons-container {
  margin-top: 15px;
}

.btn {
  display: inline-block;
  padding: 12px 25px;
  margin: 8px;
  border-radius: 8px;
  font-weight: bold;
  text-decoration: none;
  transition: 0.3s;
  font-size: 16px;
}

.btn-submit {
  background-color: #007BFF;
  color: white;
}

.btn-submit:hover {
  background-color: #0056b3;
}

.btn-register {
  background-color: #28A745;
  color: white;
}

.btn-register:hover {
  background-color: #1e7e34;
}

.btn-template {
  background-color: #FF9800;
  color: white;
}

.btn-template:hover {
  background-color: #e68900;
}

/* === Important Dates Section === */
.important-dates {
    padding: 50px 20px;
    background-color: #ffffff;
    text-align: center;
}

.important-dates h2 {
    color: rgba(18, 114, 117);
    font-family: "Stack Sans Text", sans-serif;
    margin-bottom: 30px;
}

/* Κοντέινερ για τα κουτάκια */
.dates-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    max-width: 1000px;
    margin: 0 auto;
}

/* Στυλ για κάθε κουτάκι */
.date-card {
    background: #e9f6fa;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.date-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.2);
}

.date-card h3 {
    color: #033d3d;
    font-size: 18px;
    margin-bottom: 10px;
}

.date-card p {
    font-size: 16px;
    color: #555;
}

/* === Responsive Layout === */

/* Για tablets (2 στήλες) */
@media (max-width: 900px) {
    .dates-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Για κινητά (1 στήλη) */
@media (max-width: 600px) {
    .dates-container {
        grid-template-columns: 1fr;
    }
}


/* === Χορηγοί === */
.sponsors {
  max-width: 1000px;
  margin: 50px auto;
  padding: 0 20px;
  text-align: center;
}

.sponsor-badge {
  display: inline-block;
  padding: 8px 16px;
  border-radius: 8px;
  font-weight: bold;
  font-size: 18px;
  color: rgb(255, 255, 255);
  margin-bottom: 15px;
}

.platinum { background-color: #cee4f1; color: black; }
.gold { background-color: #FFD700; color: black; }
.silver { background-color: #C0C0C0; color: black; }
.bronze { background-color: #CD7F32; color: black; }

.sponsor-logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  margin-bottom: 40px;
}

.sponsor-logos a img {
  max-height: 200px;
  transition: transform 0.3s;
}

.sponsor-logos a img:hover {
  transform: scale(1.1);
}

/* === Footer === */
.footer {
  background-color: rgba(18, 114, 117);
  color: white;
  text-align: center;
  padding: 15px;
  margin-top: 50px;
}
/* Registration Section */
.registration {
    background-color: #e9f6fa;
    text-align: center;
    border-radius: 20px;
    box-shadow: 0 3px 12px rgba(0, 0, 0, 0.1);
}

.registration-info {
    display: flex;
    justify-content: center;
    gap: 25px;
    flex-wrap: wrap;
    margin-top: 40px;
}

.registration-info .card {
    background: white;
    padding: 25px;
    border-radius: 12px;
    width: 250px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    transition: 0.3s;
}

.registration-info .card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.registration-info .card h3 {
    color: #033d3d;
    font-family: "Stack Sans Text", sans-serif;
    margin-bottom: 10px;
}

.price {
    font-size: 24px;
    font-weight: bold;
    color: #D4AF37;
    margin: 10px 0;
}

.date {
    font-size: 14px;
    color: #033d3d;
    margin-bottom: 15px;
}

.register-btn {
    background: #002B5B;
    color: white;
    border: none;
    padding: 10px 20px;
    font-weight: bold;
    border-radius: 5px;
    cursor: not-allowed;
    transition: 0.3s;
}

.register-btn:hover {
    background: #014a94;
}

.note {
    margin-top: 20px;
    font-size: 14px;
    color: #555;
}
/* Keynote Speakers */
.speakers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.speaker-card {
    background: #e9f6fa;
    padding: 15px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.speaker-card img {
    width: 200px;
    height: 200px;
    object-fit: cover;
    border-radius: 50%;
    margin-bottom: 10px;
}

.speaker-card h3 {
    color: #003366;
    margin-bottom: 5px;
}

.topic {
    font-style: italic;
    color: #555;
}

/* Committee */
.committee-list {
    list-style: disc;
    margin-left: 20px;
    line-height: 1.8;
}
/* === Organizing Committee Section === */
.committee {
    text-align: center;
    background-color: #e9f6fa;
    padding: 50px 20px;
}

.committee h2 {
    color: #002B5B;
    font-family: "Stack Sans Text", sans-serif;
    margin-bottom: 30px;
}

.committee-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 25px;
    justify-items: center;
}

.committee-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 25px;
    justify-items: center;
    align-items: stretch; /* σημαντικό */
}

.committee-member {
    height: 100%; /* όλα ίδιο ύψος */
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.committee-member h3 {
    min-height: 50px; /* ίδιο ύψος για ονόματα */
}

.committee-member p {
    min-height: 20px;
}

.committee-member {
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center; /* 🔥 αυτό είναι το σημαντικό */
    text-align: center;
}

.committee-member img {
    display: block;
    margin: 0 auto;
}

.committee-member {
    background: rgb(255, 255, 255);
    padding: 15px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    max-width: 250px;
}

.committee-member:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.2);
}

.committee-member img {
    width: 120px;
    height: 120px;
    object-fit: cover;
    border-radius: 50%;
    margin-bottom: 10px;
    border: 3px solid #002B5B;
}

.committee-member h3 {
    font-size: 18px;
    color: #002B5B;
    margin-bottom: 5px;
}

.committee-member p {
    font-size: 14px;
    color: #666;
}

/* Κάθε σειρά */
.committee-row {
  display: flex;
  justify-content: center;
  gap: 25px;
  margin-bottom: 40px;
}

/* ΠΑΝΩ (2 άτομα στο κέντρο) */
.top-row .committee-member {
  width: 250px;
}

/* ΚΑΤΩ (5 άτομα σε σειρά) */
.bottom-row {
  flex-wrap: wrap; /* αν δεν χωράνε, σπάνε όμορφα */
}

.bottom-row .committee-member {
  width: 200px;
}
/* === Keynote Speakers Section === */
.speakers {
    text-align: center;
    background-color: #e9f6fa;
    padding: 50px 20px;
}

.speakers h2 {
    color: #002B5B;
    font-family: "Stack Sans Text", sans-serif;
    margin-bottom: 30px;
}

/* Grid διάταξη για τους ομιλητές */
.speakers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 25px;
    justify-items: center;
}

/* Κάρτα ομιλητή */
.speaker-card {
    background: rgb(255, 255, 255);
    padding: 15px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    max-width: 250px;
}

/* Hover Effect */
.speaker-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.2);
}

/* Φωτογραφία ομιλητή */
.speaker-card img {
    width: 120px;
    height: 120px;
    object-fit: cover;
    border-radius: 50%;
    margin-bottom: 10px;
    border: 3px solid #002B5B;
}

/* Όνομα ομιλητή */
.speaker-card h3 {
    font-size: 18px;
    color: #002B5B;
    margin-bottom: 5px;
}

/* Ίδρυμα / Θέση */
.speaker-card p {
    font-size: 14px;
    color: #666;
}
/* === Program Section === */
.program {
    text-align: center;
    padding: 50px 20px;
    background-color: #ffffff;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.program h2 {
    color: #002B5B;
    font-family: "Stack Sans Text", sans-serif;
    margin-bottom: 10px;
}

.program p {
    font-size: 16px;
    color: #555;
    margin-bottom: 20px;
}

/* Στυλ για το κουμπί λήψης */
.download-btn {
    display: inline-block;
    padding: 12px 24px;
    background-color: #fd0404;
    color: white;
    font-weight: bold;
    border-radius: 8px;
    text-decoration: none;
    font-size: 16px;
    transition: background-color 0.3s, transform 0.2s;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.download-btn:hover {
    background-color: #014a94;
    transform: translateY(-2px);
}
.contact-section {
  text-align: center;
  padding: 50px 20px;
  background-color: #fff;
}

.contact-container {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 20px;
}

.contact-box {
  background-color: #e9f6fa;
  padding: 25px 20px;
  border-radius: 12px;
  min-width: 250px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  transition: transform 0.3s, box-shadow 0.3s;
}

.contact-box:hover {
  transform: translateY(-5px);
  box-shadow: 0 4px 15px rgba(0,0,0,0.15);
}

.contact-box h3 {
  margin-bottom: 10px;
}

.contact-box a {
  text-decoration: none;
  color: #007BFF;
}

.contact-box a:hover {
  text-decoration: underline;
}

/* Responsive για κινητά */
@media (max-width: 768px) {
  .contact-container {
    flex-direction: column;
    align-items: center;
  }

  .contact-box {
    width: 80%;
  }
}
/* === Θεματικές Ενότητες === */
.topics-section {
  padding: 60px 20px;
  background-color: #ffffff;
  text-align: center;
}

.topics-section h2 {
  font-size: 28px;
  margin-bottom: 30px;
  color: #002B5B;
}

/* Container για τις κάρτες */
.topics-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto;
}

/* Στυλ για κάθε κάρτα */
.topic-card {
  background-color: #e9f6fa;
  padding: 25px 20px;
  border-radius: 15px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease-in-out;
  cursor: default;
}

/* Hover effect */
.topic-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 8px 25px rgba(119, 112, 112, 0.644);
}

/* Τίτλοι */
.topic-card h3 {
  font-size: 20px;
  color: #002B5B;
  margin-bottom: 10px;
}

/* Περιγραφή */
.topic-card p {
  font-size: 15px;
  color: #555;
  line-height: 1.5;
}

/* Responsive για κινητά */
@media (max-width: 600px) {
  .topic-card {
    padding: 20px;
  }

  .topic-card h3 {
    font-size: 18px;
  }

  .topic-card p {
    font-size: 14px;
  }
}
/* === Box για τη σελίδα General Information === */
.info-box {
  background-color: #e9f6fa;
  padding: 30px;
  margin: 30px auto;
  max-width: 900px;
  border-radius: 15px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: box-shadow 0.3s ease, transform 0.2s ease;
}

.info-box:hover {
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
  transform: translateY(-3px);
}

.info-box p {
  font-size: 17px;
  line-height: 1.7;
  color: #333;
  text-align: justify;
  margin-bottom: 15px;
}

.template-button-container {
  text-align: center; 
  margin-top: 50px;
}
.carousel-inner img {
  border-radius: 15px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

.carousel {
  max-width: 900px;
  margin: 0 auto 40px;
}

/* Carousel styling for Conference Venue */
.carousel {
  max-width: 900px;
  margin: 30px auto;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.carousel-inner img {
  width: 100%;
  height: auto;
  border-radius: 15px;
}
/* === Bootstrap 3 Carousel Styling === */
.carousel {
  max-width: 900px;
  margin: 40px auto;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.carousel .item img {
  width: 100%;
  height: auto;
  border-radius: 15px;
}

.carousel-caption {
  background: rgba(0, 0, 0, 0.5);
  padding: 10px 20px;
  border-radius: 10px;
}

.carousel-caption h4 {
  color: #fff;
  margin: 0;
}

/* === Απλό και σταθερό τριγωνάκι (▼) για τα dropdowns === */
.navbar-nav > li.dropdown > a::after {
  content: "▼";             /* εμφανίζει το τρίγωνο */
  font-size: 0.65em;         /* μικρότερο από το κείμενο */
  vertical-align: middle;    /* σωστή στοίχιση */
  margin-left: 4px;          /* λίγο κενό από το κείμενο */
  opacity: 0.8;
  transition: transform 0.2s ease;
}

/* Όταν ανοίγει ή γίνεται hover */
.navbar-nav > li.dropdown.open > a::after,
.navbar-nav > li.dropdown:hover > a::after {
  transform: rotate(180deg); /* γυρίζει προς τα πάνω (▲) */
}

.navbar-nav > li.dropdown > a:hover::after {
  color: #FF9800; /* ή όποιο hover χρώμα θέλεις */
}
/* ===== COUNTDOWN STYLING ===== */
#countdown-section {
  padding: 50px 0;
}

.countdown-box {
  display: inline-block;
  background-color: #b71c1c; /* απαλό κόκκινο φόντο */
  border: 3px solid #b71c1c; /* σκούρο κόκκινο περίγραμμα */
  border-radius: 15px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.15);
  padding: 30px 50px;
  text-align: center;
  color: #ffffff; /* χρώμα κειμένου */
  max-width: 600px;
}

.countdown-box h2 {
  margin-bottom: 10px;
  font-weight: 700;
}

.countdown-box h3 {
  margin-bottom: 25px;
  font-weight: 500;
  color: #b71c1c;
}

#countdown {
  font-size: 2em;
  font-weight: bold;
  letter-spacing: 2px;
}
#countdown-section {
  background-color: #e9f6fa;
  border-top: 2px solid #002B5B;
  border-bottom: 2px solid #002B5B;
}

#countdown {
  letter-spacing: 2px;
}

.hotel-grid {
  display: grid;
  grid-template-columns: repeat(3, 280px); /* 3 κάρτες ανά σειρά */
  grid-auto-rows: auto;
  gap: 2rem;
  justify-content: center; /* κεντράρει ολόκληρη τη grid */
  max-width: 900px;
  margin: 0 auto;
}

.hotel-card {
  width: 280px;
  background: #f8f8f8;
  border-radius: 10px;
  overflow: hidden;
  text-align: center;
  transition: transform 0.3s ease;
}

.hotel-card:hover {
  transform: translateY(-5px);
}

.hotel-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  cursor: pointer;
}

.hotel-card h3 {
  margin: 1rem 0 0.5rem 0;
}.hotel-card img:hover {
  opacity: 0.8;
}
#bus-transport {
  padding: 60px 20px;
  background-color: #f4f9fc;
  text-align: center;
}

.bus-map-wrapper {
  width: 100%;
  max-width: 1100px;
  height: 500px;
  margin: 0 auto 30px auto;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}

.bus-map-wrapper iframe {
  width: 100%;
  height: 100%;
  border: none;
}

.bus-controls {
  margin-top: 20px;
}

.bus-controls select,
.bus-controls button {
  padding: 10px 15px;
  margin: 10px;
  border-radius: 6px;
  border: 1px solid #ccc;
}

.bus-controls button {
  background-color: #002B5B;
  color: white;
  cursor: pointer;
}
.btn {
  display: inline-block;
  padding: 12px 25px;
  margin: 8px;
  border-radius: 8px;
  font-weight: bold;
  text-decoration: none;
  transition: 0.3s;
  font-size: 16px;
}

.btn-register {
  background-color: #28A745;
  color: white;
}

.btn-register:hover {
  background-color: #1e7e34;
}
/* 🔥 OVERRIDE του παλιού grid */
.committee-grid {
  display: block !important;
}

/* Κάθε σειρά */
.committee-row {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: 25px;
  margin-bottom: 40px;
}

/* Πάνω σειρά (2 άτομα) */
.top-row {
  flex-wrap: nowrap;
}

/* Κάτω σειρά (5 άτομα) */
.bottom-row {
  flex-wrap: wrap;
  max-width: 1100px;
  margin: 0 auto;
}

/* Cards */
.committee-member {
  width: 220px;
  text-align: center;
}