/*--------------------------------------------------------------
# CSS Variables
--------------------------------------------------------------*/
:root {
  --primary-color: #045174;
  --accent-color: #e87a00;
  --background-color: #E6F1F4;
  --text-color: #045174;
  --hover-bg: #eee;
  --header-height-desktop: 160px;
  --header-height-mobile: 130px;
  --transition-speed: 0.3s;
}

/*--------------------------------------------------------------
# General
--------------------------------------------------------------*/
body {
  color: var(--text-color);
  background-color: var(--background-color);
  font-size: 16px;
  font-family: "Montserrat", sans-serif;
  /* Improve scroll performance on iOS */
  -webkit-overflow-scrolling: touch;
  /* Prevent bounce scrolling on iOS */
  overscroll-behavior: none;
  /* Ensure consistent rendering */
  -webkit-text-size-adjust: 100%;
}

h1, h2, h3 {
  font-family: "Spectral", serif;
  color: var(--primary-color);
  text-transform: uppercase;
}

h1 {
  font-size: 36px;
  padding-bottom: 40px;
  letter-spacing: 5px;
}

h2 {
  font-size: 28px;
  letter-spacing: 3px;
}

h3 {
  font-size: 24px;
  letter-spacing: 3px;
}

hr {
  color: var(--primary-color);
  height: 5px;
  margin: 30px auto; 
}

@media (max-width: 768px) {
  body {
    font-size: 18px;
  }
}

/*--------------------------------------------------------------
# Header
--------------------------------------------------------------*/
#header {
  height: var(--header-height-desktop);
  z-index: 997;
  transition: all 0.5s;
  background-color: var(--background-color);
}

#header .logo img {
  width: auto;
  height: var(--header-height-desktop);
  padding: 10px;
  object-fit: contain;
  margin-right: 60px;
}

@media (max-width: 768px) {
  #header {
    height: var(--header-height-mobile);
  }
  
  #header .logo img {
    height: calc(var(--header-height-mobile) - 10px);
    padding: 5px;
    margin-right: 0;
  }
}

/*--------------------------------------------------------------
# Header Social Links
--------------------------------------------------------------*/
.header-social-links a {
  margin-left: 15px;
  position: relative;
  display: inline-block;
}

@media (max-width: 768px) {
  .header-social-links a {
    margin-left: 8px;
  }
}

.header-social-links a img {
  width: 40px;
  opacity: 0.7;
  transition: all var(--transition-speed) ease;
  vertical-align: middle;
}

@media (max-width: 768px) {
  .header-social-links a img {
    width: 30px;
  }
}

.header-social-links a:hover img {
  opacity: 1;
}

/* Use background-image instead of content for better iOS compatibility */
.header-social-links a[href*="facebook.com"] img {
  background-image: url('/static/img/icon-facebook.svg?v=3');
  background-size: contain;
  background-repeat: no-repeat;
}

.header-social-links a[href*="facebook.com"]:hover img {
  background-image: url('/static/img/icon-facebook-orange.svg?v=3');
}

.header-social-links a[href*="instagram.com"] img {
  background-image: url('/static/img/icon-instagram.svg?v=3');
  background-size: contain;
  background-repeat: no-repeat;
}

.header-social-links a[href*="instagram.com"]:hover img {
  background-image: url('/static/img/icon-instagram-orange.svg?v=3');
}

/*--------------------------------------------------------------
# Back to Top Button
--------------------------------------------------------------*/
.back-to-top {
  position: fixed;
  visibility: hidden;
  opacity: 0;
  right: 15px;
  bottom: 15px;
  z-index: 996;
  background: var(--primary-color);
  width: 45px;
  height: 45px;
  border-radius: 8px;
  transition: all 0.4s;
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(4, 81, 116, 0.3);
}

.back-to-top .material-symbols-outlined {
  font-size: 28px;
  color: white;
}

.back-to-top:hover {
  background: var(--accent-color);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(4, 81, 116, 0.4);
  text-decoration: none;
}

.back-to-top:hover .material-symbols-outlined {
  color: white;
}

.back-to-top.active {
  visibility: visible;
  opacity: 1;
}

/*--------------------------------------------------------------
# Navigation Menu
--------------------------------------------------------------*/
.navbar {
  padding: 0;
  display: flex;
  justify-content: flex-end;
}

.navbar ul {
  margin: 0;
  padding: 0;
  display: flex;
  list-style: none;
  align-items: center;
  flex-wrap: wrap;
  max-width: 800px;
  justify-content: flex-start;
}

.navbar li {
  position: relative;
}

.navbar a, 
.navbar a:focus {
  color: var(--primary-color);
  font-family: "Montserrat", sans-serif;
  font-size: 18px;
  letter-spacing: 1.8px;
  padding: 6px 10px;
  white-space: nowrap;
  transition: all var(--transition-speed) ease;
  font-weight: 600;
  text-decoration: none;
  display: flex;
  justify-content: space-between;
}

.navbar a:hover, 
.navbar .active, 
.navbar a.active, 
.navbar li:hover > a {
  color: var(--accent-color);
}

/* Mobile Navigation */
.mobile-nav-toggle {
  color: var(--primary-color);
  font-size: 28px;
  cursor: pointer;
  display: none;
  transition: 0.5s;
  margin-left: 20px;
}

@media (max-width: 991px) {
  .mobile-nav-toggle {
    display: block;
  }

  .navbar ul {
    display: none;
  }
}

.navbar-mobile {
  position: fixed;
  overflow: hidden;
  top: 0;
  right: 0;
  left: 0;
  bottom: 0;
  background: var(--background-color);
  transition: var(--transition-speed);
  z-index: 999;
}

.navbar-mobile .mobile-nav-toggle {
  position: absolute;
  top: 15px;
  right: 15px;
}

.navbar-mobile ul {
  display: block;
  position: absolute;
  top: 55px;
  right: 15px;
  bottom: 15px;
  left: 15px;
  background-color: var(--background-color);
  overflow-y: auto;
  transition: var(--transition-speed);
}

.navbar-mobile a, 
.navbar-mobile a:focus {
  padding: 10px 20px;
  font-size: 21px;
  color: var(--primary-color);
}

.navbar-mobile a:hover, 
.navbar-mobile .active, 
.navbar-mobile a.active {
  color: var(--accent-color);
}

/*--------------------------------------------------------------
# Course Navigation
--------------------------------------------------------------*/
.course-navigation {
  margin: 0 0 60px 0;
}

.course-navigation ul {
  margin: 0;
  padding: 0;
  display: flex;
  list-style: none;
  flex-wrap: wrap;
  justify-content: flex-start;
}

.course-navigation li {
  position: relative;
  margin: 6px 36px 6px 0;
}

.course-navigation a {
  color: var(--primary-color);
  font-size: 16px;
  letter-spacing: 1.6px;
  transition: color var(--transition-speed) ease;
  font-weight: 600;
  text-decoration: none;
  word-wrap: break-word;
  hyphens: auto;
}

.course-navigation a:hover {
  color: var(--accent-color);
}

.course-section {
  scroll-margin-top: 180px;
}

@media (max-width: 991px) {
  .course-navigation ul {
    flex-direction: column;
  }
}

@media (max-width: 768px) {
  .course-section {
    scroll-margin-top: 150px;
  }
}

/*--------------------------------------------------------------
# Sections
--------------------------------------------------------------*/
section {
  scroll-margin-top: 200px;
}

section .text-link {
  color: var(--primary-color);
  transition: all var(--transition-speed) ease;
}

section .text-link:hover {
  color: var(--accent-color);
}

section .href-button {
  padding: 20px 0 20px 0;
}

section .href-button a {
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
  padding: 10px 20px;
  font-size: 16px;
  font-weight: 600;
  border-radius: 4px;
  transition: all var(--transition-speed) ease;
  text-transform: uppercase;
  text-decoration: none;
}

section .text-with-icon {
  display: flex;
  align-items: flex-start;
  gap: 6px;
}

section .text-with-big-icon,
section .text-with-big-icon-center {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

section .text-with-big-icon-center {
  align-items: center;
}

section .text-with-big-icon .icon,
section .text-with-big-icon-center .icon {
  font-size: 36px;
}

section .text-small {
  font-size: 14px;
  color: var(--primary-color);
}

@media (max-width: 768px) {
  section {
    scroll-margin-top: 150px;
  }
}

/*--------------------------------------------------------------
# Layout Utilities
--------------------------------------------------------------*/
.padding-top-small { padding-top: 20px; }
.padding-bottom { padding-bottom: 20px; }
.padding-bottom-small { padding-bottom: 10px; }
.padding-top { padding-top: 60px; }
.hr-padding-small { margin: 20px 0; }

.main-section {
  padding-top: 200px;
}

.material-icon {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.material-icon span {
  color: var(--accent-color);
}

@media (max-width: 768px) {
  .main-section {
    padding-top: 150px;
  }
}

/*--------------------------------------------------------------
# Carousel
--------------------------------------------------------------*/
#carousel {
  padding: var(--header-height-desktop) 0 60px 0;
}

.carousel-item img {
  height: 500px;
  object-fit: cover;
}

@media (max-width: 768px) {
  #carousel {
    padding-top: var(--header-height-mobile);
  }
  
  .carousel-item img {
    height: 350px;
  }
}

/*--------------------------------------------------------------
# Cookie Banner
--------------------------------------------------------------*/
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--primary-color);
  color: white;
  padding: 15px 20px;
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
  z-index: 999;
  transform: translateY(100%);
  transition: transform var(--transition-speed) ease-in-out;
  font-size: 16px;
}

.cookie-banner.show {
  transform: translateY(0);
}

.cookie-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.cookie-text {
  flex: none;
  line-height: 1.4;
  text-align: center;
}

.cookie-btn {
  background-color: var(--accent-color);
  color: white;
  border: none;
  padding: 8px 20px;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 600;
  transition: background-color var(--transition-speed);
  flex-shrink: 0;
  white-space: nowrap;
}

.cookie-btn:hover {
  background-color: #d16e00;
}

/*--------------------------------------------------------------
# Session Popup
--------------------------------------------------------------*/
.session-popup {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-speed) ease-in-out, visibility var(--transition-speed) ease-in-out;
}

.session-popup.show {
  opacity: 1;
  visibility: visible;
}

.session-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
}

.session-content {
  position: relative;
  background-color: var(--primary-color);
  color: white;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  max-width: 500px;
  margin: 20px;
  text-align: center;
  transform: scale(0.9);
  transition: transform var(--transition-speed) ease-in-out;
}

.session-popup.show .session-content {
  transform: scale(1);
}

.session-text {
  display: block;
  font-size: 18px;
  line-height: 1.5;
  margin-bottom: 20px;
  font-weight: 500;
}

.session-btn {
  background-color: var(--accent-color);
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 600;
  font-size: 16px;
  transition: background-color var(--transition-speed);
}

.session-btn:hover {
  background-color: #d16e00;
}

/* Mobile responsive adjustments for session popup */
@media (max-width: 768px) {
  .session-content {
    margin: 15px;
    padding: 25px 20px;
    max-width: none;
  }
  
  .session-text {
    font-size: 16px;
    margin-bottom: 20px;
  }
  
  .session-btn {
    padding: 14px 28px;
    font-size: 16px;
  }
}

/* Mobile responsive adjustments for cookie banner */
@media (max-width: 768px) {
  .cookie-banner {
    padding: 15px 10px;
    left: 10px;
    right: 10px;
    bottom: 10px;
    border-radius: 8px;
    transform: translateY(calc(100% + 20px));
  }
  
  .cookie-banner.show {
    transform: translateY(0);
  }
  
  .cookie-content {
    flex-direction: column;
    gap: 15px;
    text-align: center;
    max-width: none;
  }
  
  .cookie-text {
    width: 100%;
    word-wrap: break-word;
    hyphens: auto;
  }
  
  .cookie-btn {
    padding: 12px 30px;
    min-width: 100px;
    border-radius: 6px;
  }
}