:root {
    --primary: #03969d;
    --primary-hover: #02747a;
    --accent: #d27817;
    --bg-main: #fdfbf7;
    --bg-card: #fff;
    --text-main: #1A1A1A;
    --text-muted: #5f4f3f;
    --border-color: #e8e2d9;
    --font-heading: 'Cormorant Garamond', serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    --transition: all 0.3s ease;
}

/* Base Styles */
* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 20px;
}

img, svg, video {
  max-width: 100%;
  height: auto;
}








/* Typography */
h1, h2, h3 {
    font-family: var(--font-heading);
    color: var(--primary);
    font-weight: 600;
    line-height: 1.2;
}

h1 { font-size: 3rem; margin-bottom: 1rem; }
h2 { font-size: 2.2rem; margin-bottom: 0.8rem; }
h3 { font-size: 1.4rem; margin-bottom: 0.5rem; }

p { color: var(--text-muted); margin-bottom: 1rem; }









/* Navigation */
.navbar {
    position: sticky;
    top: 0;
    background-color: rgba(253, 251, 247, 0.95);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 15px 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
}

.logo-img {
    height: 40px; /* Ρυθμίστε το ύψος ανάλογα με τις αναλογίες του logo σας */
    width: auto;
    object-fit: contain;
}

.logo-secondary {
    font-weight: 400;
    color: var(--text-main);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 20px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-main);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--primary);
}

.btn-nav {
    padding: 8px 16px;
    border: 1px solid var(--primary);
    border-radius: 4px;
    color: var(--primary) !important;
}

.btn-nav:hover {
    background-color: var(--primary);
    color: #ffffff !important;
}

/* Mobile Responsive Removes Navbar on Mobile*/
@media (max-width: 768px) {
    h1 { font-size: 2.2rem; }
    .grid-2, .form-row { grid-template-columns: 1fr; }
    .nav-links { display: none; } /* Απλοποίηση για κινητά */
}









/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 28px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 4px;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: var(--transition);
}

.btn-primary {
    background-color: var(--primary);
    color: #ffffff;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
}

.btn-secondary:hover {
    background-color: rgba(92, 19, 37, 0.05);
}

.btn-block {
    width: 100%;
}










/* Sections */
.section {
    padding: 80px 0;
}

.bg-light {
    background-color: var(--bg-card);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.section-tag {
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 2px;
    color: var(--accent);
    font-weight: 600;
    display: block;
    margin-bottom: 8px;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 50px auto;
}









/* Hero */
.hero {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--bg-main) 0%, #F5EFE6 100%);
    border-bottom: 1px solid var(--border-color);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.hero-content {
    text-align: left;
}

.hero-subtitle {
    text-transform: uppercase;
    letter-spacing: 3px;
    font-size: 0.85rem;
    color: var(--accent);
    font-weight: 600;
}

.hero-director {
    font-size: 1.1rem;
    font-style: italic;
    color: var(--text-main);
    margin-bottom: 30px;
}

.hero-actions {
    display: flex;
    gap: 15px;
    justify-content: flex-start;
}

.hero-video {
    width: 100%;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    border: 1px solid var(--border-color);
}

.hero-video video {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
}

/* Responsive Hero*/
@media (max-width: 768px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .hero-content {
        text-align: center;
    }

    .hero-actions {
        justify-content: center;
    }
}









/* ABOUT */
.about-header-wrapper {
  max-width: 800px;
  margin: 0 auto 50px;
  text-align: center;
}

.about-content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.about-image-card {
  width: 100%;
  padding: 50px 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background:
    linear-gradient(rgba(0,0,0,.45), rgba(0,0,0,.45)),
    url('images/Entexni%20Mousiki%20Sxoli_Website%20Section%20Image_1920X1080.png')
    center / cover no-repeat;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0,0,0,.1);
}

.about-card-content {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 30px;
  text-align: center;
}

.about-image-card .stat-item {
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(255,255,255,.3);
}

.about-image-card .stat-item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.about-image-card .stat-number {
  display: block;
  margin-bottom: 8px;
  color: #fff;
  font: 600 3.5rem/1 var(--font-heading);
}

.about-image-card .stat-label {
  display: block;
  color: #fff;
  font-size: .85rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.about-text-col {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.about-text-col p {
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
  line-height: 1.8;
}

.about-text-col p:last-child {
  margin-bottom: 0;
}


/* Query για τις μικρές οθόνες όπου τα στοιχεία να μπαίνουν το ένα κάτω από το άλλο */
@media (max-width: 768px) {
  .container {
    flex-direction: column;
  }
  
  .about-content-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}







/* Cards Grid (Classes) */
/* DEPARTMENTS */
.departments-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 25px;
}

.card {
  height: 250px;
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  text-align: center;
  background:
    linear-gradient(rgba(0,0,0,.45), rgba(0,0,0,.45)),
    var(--card-bg) center / cover no-repeat;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}

.card-content {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.card h3 {
  margin-bottom: 0;
  color: #fff;
  font-size: 1.8rem;
  text-shadow: 0 2px 10px rgba(0,0,0,.5);
}

.card-text {
  max-height: 0;
  margin: 10px 0 0;
  overflow: hidden;
  color: #fff;
  font-size: .95rem;
  line-height: 1.5;
  text-shadow: 0 1px 5px rgba(0,0,0,.7);
  opacity: 0;
  transition: opacity .4s ease, max-height .4s ease;
}

.card:hover,
.card:focus,
.card.is-active {
  background:
    linear-gradient(rgba(0,0,0,.7), rgba(0,0,0,.7)),
    var(--card-bg) center / cover no-repeat;
  border-color: var(--primary);
  box-shadow: 0 12px 30px rgba(0,0,0,.2);
  transform: translateY(-6px) scale(1.02);
}

.card:hover .card-text,
.card:focus .card-text,
.card.is-active .card-text {
  max-height: 140px;
  opacity: 1;
}







/* Teachers Carousel */
/* Wrapper & Navigation Buttons */
.carousel-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background-color: var(--bg-card);
    color: var(--primary);
    border: 1px solid var(--border-color);
    font-size: 1.2rem;
    cursor: pointer;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    transition: var(--transition);
}

.carousel-btn:hover {
    background-color: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
}

.prev-btn {
    left: -15px;
}

.next-btn {
    right: -15px;
}

/* Προσθήκη smooth scroll στο carousel */
.teachers-carousel {
    display: flex;
    gap: 25px;
    overflow-x: auto;
    padding: 10px 5px 25px 5px;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}

.teachers-carousel {
    display: flex;
    gap: 25px;
    overflow-x: auto;
    padding: 10px 5px 25px 5px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
}

/* Scrollbar Carousel */
.teachers-carousel::-webkit-scrollbar {
    height: 15px;
}

.teachers-carousel::-webkit-scrollbar-track {
    background-color: var(--border-color); /* Ελαφρύ υπόβαθρο της διαδρομής */
    border-radius: 10px;
}

.teachers-carousel::-webkit-scrollbar-thumb {
    background-color: var(--primary); /* Τιρκουάζ χρώμα */
    border-radius: 10px;
}

.teachers-carousel::-webkit-scrollbar-thumb:hover {
    background-color: var(--primary-hover); /* Σκούρο τιρκουάζ στο hover */
}

.teacher-card {
    flex: 0 0 260px; /* Σταθερό πλάτος για κάθε κάρτα */
    scroll-snap-align: start;
    text-align: center;
    padding: 25px 20px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.03);
    transition: var(--transition);
}

.teacher-card:hover {
    transform: translateY(-4px);
}

.teacher-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin: 0 auto 15px auto;
    padding: 4px; /* Απόσταση της εικόνας από το περιγράμμα */
    border: 3px solid var(--avatar-color, var(--primary)); /* Χρώμα περιγράμματος ανά καθηγητή */
    overflow: hidden;
}

.teacher-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.teacher-role {
    font-size: 0.85rem;
    color: var(--text-muted);
}









/* FAQ Section Styles */
.faq-accordion {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-card);
    overflow: hidden;
    transition: var(--transition);
}

.faq-question {
    padding: 18px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--primary);
    cursor: pointer;
    list-style: none; /* Απόκρυψη browser default arrow */
}

.faq-question::-webkit-details-marker {
    display: none; /* Απόκρυψη Safari arrow */
}

.faq-question:hover {
    background-color: rgba(3, 150, 157, 0.05);
}

.faq-icon {
    font-size: 0.8rem;
    color: var(--primary);
    transition: transform 0.3s ease;
    margin-left: 15px;
}

/* Περιστροφή βέλους όταν το details είναι ανοιχτό ([open]) */
.faq-item[open] .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 15px 20px 20px 20px;
    background-color: #fafafa;
    border-top: 1px dashed var(--border-color);
}

.faq-answer p {
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-main);
}












/* FOOTER */
footer {
  padding: 35px 0;
  background: var(--bg-main);
  border-top: 1px solid var(--border-color);
  font-size: .85rem;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-left,
.footer-center,
.footer-right {
  flex: 1;
}

.footer-left {
  display: flex;
  justify-content: flex-start;
}

.footer-logo {
  display: block;
  max-width: 90px;
  height: auto;
}

.footer-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-align: center;
}

.copyright-text {
  margin: 0;
  color: var(--text-muted);
}

.advenue-link {
  color: var(--primary);
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
}

.advenue-link:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

.footer-legal {
  display: flex;
  align-items: center;
  gap: 8px;
}

.legal-link {
  color: var(--text-muted);
  font-size: .8rem;
  text-decoration: none;
  transition: var(--transition);
}

.legal-link:hover {
  color: var(--primary);
  text-decoration: underline;
}

.separator {
  color: var(--border-color);
  font-size: .75rem;
}

.footer-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 20px;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}

.footer-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition);
}

.footer-link:hover {
  color: var(--primary);
}

.footer-link svg {
  flex-shrink: 0;
  color: var(--primary);
}

.footer-social {
  display: flex;
  align-items: center;
  gap: 10px;
}

.social-icon {
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  color: var(--primary);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  text-decoration: none;
  transition: var(--transition);
}

.social-icon:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: translateY(-3px);
}

/* Mobile Responsive Footer Order */
@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 20px;
    }

    .footer-left,
    .footer-center,
    .footer-right {
        width: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }

    /* 1. Logo */
    .footer-left {
        order: 1;
    }

    /* 2. Copyright & 3. Terms/Privacy */
    .footer-center {
        order: 2;
    }

    /* 4, 5, 6, 7. Contact Details & Social */
    .footer-right {
        order: 3;
    }

    .footer-contact {
        align-items: center; /* Κεντράρισμα διεύθυνσης, email, τηλεφώνου */
    }

    .footer-social {
        justify-content: center; /* Τα εικονίδια δίπλα-δίπλα στο κέντρο */
    }
}