/* Module 1: Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-xl);
  z-index: 1000;
  transition: background-color var(--transition-normal), box-shadow var(--transition-normal);
  background-color: var(--color-bg-primary);
  /* Solid instead of glass to mimic the screenshot */
  border-bottom: 1px solid var(--color-border);
}

.navbar .brand {
  display: flex;
  align-items: center;
  flex: 1 1 auto;
  min-width: 0;
  /* Pushes links to the center */
}

.navbar .brand a {
  min-width: 0;
}

.navbar .brand img {
  height: 24px;
  /* Simulating the smaller google logo size */
}

.navbar .brand .brand-text {
  font-family: var(--font-family-base);
  font-size: clamp(1rem, 2.2vw, 1.25rem);
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-left: 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.navbar .nav-links {
  position: absolute;
  top: var(--header-height);
  right: var(--space-xl);
  display: flex;
  flex-direction: column;
  width: min(340px, calc(100vw - (var(--space-xl) * 2)));
  padding: var(--space-lg);
  border: 1px solid var(--color-border);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  background: var(--color-nav-bg);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  gap: var(--space-sm);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-12px);
  transition: opacity 0.24s ease, visibility 0.24s ease, transform 0.24s ease;
  z-index: 990;
}

.navbar .nav-links.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.navbar .nav-links a {
  display: block;
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  text-align: left;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.navbar .nav-links a:hover {
  background: rgba(26, 115, 232, 0.1);
  color: var(--color-text-primary);
}

.navbar .nav-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex: 0 0 auto;
  /* Balances the layout */
  gap: var(--space-md);
}

.navbar .nav-actions .btn-primary {
  flex: 0 0 auto;
  white-space: nowrap;
  word-break: keep-all;
}

.home-language-switcher {
  position: relative;
  display: flex;
  align-items: center;
}

.home-language-toggle {
  min-width: 46px;
  height: 38px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-bg-elevated);
  color: var(--color-text-primary);
  font-family: var(--font-family-base);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.home-language-toggle:hover,
.home-language-toggle[aria-expanded="true"] {
  border-color: var(--color-brand-primary);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.home-language-menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 150px;
  padding: var(--space-xs);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-nav-bg);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 1010;
}

.home-language-menu[hidden] {
  display: none;
}

.home-language-option {
  width: 100%;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
  font-family: var(--font-family-base);
  font-size: 0.9rem;
  font-weight: 600;
  padding: var(--space-sm) var(--space-md);
  text-align: left;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.home-language-option:hover,
.home-language-option.is-active {
  background: rgba(26, 115, 232, 0.1);
  color: var(--color-brand-primary);
}

.navbar-mobile-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  background: transparent;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-text-primary);
  transition: background-color var(--transition-fast), border-color var(--transition-fast), transform 0.3s ease;
}

.navbar-mobile-toggle:hover,
.navbar-mobile-toggle[aria-expanded="true"] {
  border-color: var(--color-border);
  background: var(--color-bg-secondary);
}

/* Module 1.5: Immediate Entry CTA */
.entry-cta {
  padding: calc(var(--header-height) + var(--space-4xl)) 0 var(--space-4xl) 0;
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
}

.entry-title {
  font-size: 2.5rem;
  color: var(--color-text-primary);
  margin-bottom: var(--space-md);
}

.entry-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2xl);
}

.btn-large {
  padding: var(--space-md) var(--space-2xl);
  font-size: 1.25rem;
  border-radius: var(--radius-xl);
  font-weight: 600;
}

/* Module 2: Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -2;
  transform: scale(1.05);
  /* slightly scaled for parallax */
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to right, var(--color-hero-overlay-start) 0%, var(--color-hero-overlay-end) 100%);
  z-index: -1;
}

.hero-content {
  max-width: 600px;
  padding: var(--space-2xl) 0;
}

.hero-badge {
  display: inline-block;
  padding: 4px 12px;
  background-color: rgba(15, 76, 92, 0.1);
  color: var(--color-brand-primary);
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  letter-spacing: 0.5px;
}

.hero-title {
  font-size: 3.5rem;
  color: var(--color-text-primary);
  margin-bottom: var(--space-lg);
}

.hero-subtitle {
  font-size: 1.125rem;
  margin-bottom: var(--space-xl);
  font-weight: 400;
}

.hero-scroll-cue {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
  color: var(--color-text-muted);
}

@keyframes bounce {

  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translateY(0) translateX(-50%);
  }

  40% {
    transform: translateY(-10px) translateX(-50%);
  }

  60% {
    transform: translateY(-5px) translateX(-50%);
  }
}

/* Base Section Padding */
.section {
  padding: var(--space-4xl) 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-3xl);
}

.section-title {
  font-size: 2.5rem;
}

.section-lead {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
}

/* Module 3: We Are What - Cards */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
}

.card {
  background: var(--color-bg-elevated);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.card h3 {
  color: var(--color-brand-primary);
  font-size: 1.5rem;
}

/* Module 4: About Us */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: start;
}

.about-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: sticky;
  top: var(--space-4xl);
}

.about-content article {
  margin-bottom: var(--space-xl);
}

/* Module 5: Culture */
.culture-section {
  background-color: var(--color-bg-secondary);
}

.culture-steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-4xl);
}

.culture-step {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.culture-step:nth-child(even) {
  direction: rtl;
}

.culture-step:nth-child(even)>* {
  direction: ltr;
}

.culture-step img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

/* Module 6: Learning Path */
.timeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 30px;
  height: 100%;
  width: 2px;
  background-color: var(--color-border);
}

.timeline-item {
  display: flex;
  gap: var(--space-xl);
  position: relative;
}

.timeline-marker {
  width: 60px;
  height: 60px;
  background-color: var(--color-brand-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.25rem;
  z-index: 1;
  flex-shrink: 0;
}

.timeline-content {
  background: var(--color-bg-elevated);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  flex-grow: 1;
}

/* Module 7: Content Bento Grid */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto auto;
  gap: var(--space-lg);
}

.bento-item {
  background: var(--color-bg-elevated);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  border: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

.bento-item.large {
  grid-column: span 2;
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.bento-img {
  width: 100px;
  height: 100px;
  object-fit: contain;
}

/* Module 8: Scenarios */
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.scenario-card {
  text-align: center;
}

.scenario-card img {
  border-radius: 50%;
  width: 150px;
  height: 150px;
  object-fit: cover;
  margin: 0 auto var(--space-lg);
  border: 4px solid var(--color-bg-secondary);
}

/* Module 9: FAQ Accordion */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-md) 0;
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  padding: var(--space-md) 0;
  font-family: var(--font-family-base);
}

.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  transition: transform var(--transition-fast);
}

.faq-item.active .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
  color: var(--color-text-secondary);
}

.faq-item.active .faq-answer {
  max-height: 500px;
  /* arbitrary high number */
}

/* Module 10: Footer */
.footer {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
  padding: var(--space-3xl) 0 var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-3xl);
}

.footer-col h4 {
  margin-bottom: var(--space-md);
  font-size: 1.125rem;
  color: var(--color-text-primary);
}

.footer-col a {
  display: block;
  color: var(--color-text-secondary);
  text-decoration: none;
  margin-bottom: var(--space-sm);
  transition: color var(--transition-fast);
}

.footer-col a:hover {
  color: var(--color-brand-primary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

.back-to-top {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  z-index: 999;
  background: var(--color-nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-normal);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top .icon {
  font-size: 1.25rem;
  font-weight: 800;
  transition: transform var(--transition-fast);
  margin-bottom: -2px; /* Pull text closer */
}

.back-to-top .text {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 1px;
}

.back-to-top:hover {
  background: var(--color-brand-primary);
  color: #FFFFFF;
  border-color: var(--color-brand-primary);
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(26, 115, 232, 0.4);
}

.back-to-top:hover .icon {
  transform: translateY(-4px);
}

/* Responsive Adjusments */
@media (max-width: 1024px) {

  .about-grid,
  .culture-step {
    grid-template-columns: 1fr;
  }

  .about-image {
    position: relative;
    top: 0;
  }

  .culture-step:nth-child(even) {
    direction: ltr;
  }
}

@media (max-width: 768px) {
  .navbar {
    padding: 0 var(--space-md);
  }

  .navbar .nav-actions {
    gap: var(--space-sm);
  }

  .navbar .nav-links {
    left: 0;
    width: 100%;
    right: auto;
    border-bottom: 1px solid var(--color-border);
    border-left: 0;
    border-right: 0;
    border-radius: 0;
    padding: var(--space-xl) var(--space-xl);
    gap: var(--space-lg);
    transform: translateY(-20px);
  }

  .navbar .nav-links.active {
    transform: translateY(0);
  }

  .navbar .nav-links a {
    font-size: 1.125rem;
    font-weight: 500;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid rgba(128, 134, 139, 0.15);
    display: block;
    text-align: center;
    width: 100%;
    transition: color var(--transition-fast);
  }

  .navbar .nav-links a:last-child {
    border-bottom: none;
  }

  .navbar .nav-actions .btn-primary {
    padding: var(--space-xs) var(--space-md);
    font-size: 0.875rem;
  }

  .home-language-toggle {
    min-width: 42px;
    height: 36px;
    font-size: 0.78rem;
  }

  .entry-title {
    font-size: 1.75rem;
  }

  .hero-title {
    font-size: 2.25rem;
  }

  .section {
    padding: var(--space-2xl) 0;
  }

  .bento-grid {
    grid-template-columns: 1fr;
  }

  .bento-item.large {
    grid-column: span 1;
    flex-direction: column;
    text-align: center;
  }

  .scenario-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .timeline::before {
    left: 20px;
  }

  .timeline-marker {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }

  .timeline-item {
    gap: var(--space-md);
  }
}