:root {
  --font-primary: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji",
    "Segoe UI Symbol";
  --font-secondary: "Roboto Slab", serif;

  /* Light Theme */
  --color-bg: #f8f9fa;
  --color-surface: #ffffff;
  --color-text-primary: #212529;
  --color-text-secondary: #495057;
  --color-text-muted: #6c757d;
  --color-border: #e9ecef;
  --color-primary: #007bff;
  --color-primary-dark: #0056b3;
  --color-primary-light: #66b0ff;
  --color-accent: #17a2b8;
  --color-accent-dark: #10707f;
  --color-shadow: rgba(0, 0, 0, 0.05);
  --color-shadow-heavy: rgba(0, 0, 0, 0.1);
  --color-success: #28a745;
  --color-success-bg: rgba(40, 167, 69, 0.1);

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --transition-fast: 0.2s ease-in-out;
  --transition-medium: 0.4s ease-in-out;
  --shadow-sm: 0 2px 4px var(--color-shadow);
  --shadow-md: 0 4px 12px var(--color-shadow-heavy);
  --shadow-lg: 0 8px 24px var(--color-shadow-heavy);
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #121212;
    --color-surface: #1e1e1e;
    --color-text-primary: #e0e0e0;
    --color-text-secondary: #a0a0a0;
    --color-text-muted: #757575;
    --color-border: #333333;
    --color-primary: #3391ff;
    --color-primary-dark: #66b0ff;
    --color-primary-light: #007bff;
    --color-accent: #21c5dc;
    --color-accent-dark: #1ab0c4;
    --color-shadow: rgba(0, 0, 0, 0.2);
    --color-shadow-heavy: rgba(0, 0, 0, 0.35);
    --color-success: #33c052;
    --color-success-bg: rgba(51, 192, 82, 0.15);
  }
}

/* Base and Reset */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* Typography */
h1,
h2,
h3,
h4 {
  font-family: var(--font-primary);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text-primary);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
  font-size: clamp(1.1rem, 2vw, 1.25rem);
}

p {
  font-size: clamp(1rem, 1.5vw, 1.1rem);
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

ul {
  list-style-type: none;
}

hr.section-divider {
  border: 0;
  height: 1px;
  background: var(--color-border);
  margin: 6rem auto;
  max-width: 100px;
}

/* Header */
.main-header {
  padding: 1rem 0;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: background-color var(--transition-fast),
    border-color var(--transition-fast);
}

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

.logo {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-text-primary);
  text-decoration: none;
}

.footer-logo {
  color: var(--color-text-primary);
}

.main-nav ul {
  display: flex;
  gap: 2rem;
}

.main-nav a {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  position: relative;
  padding: 0.5rem 0;
}

.main-nav a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-fast);
}

.main-nav a:hover::after {
  width: 100%;
}

.main-nav a:hover {
  color: var(--color-text-primary);
  text-decoration: none;
}

/* CTA Buttons */
.cta-button {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: transform var(--transition-fast),
    background-color var(--transition-fast), color var(--transition-fast),
    box-shadow var(--transition-fast);
  border: 2px solid transparent;
  text-decoration: none;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

.cta-button.header-cta {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.cta-button.header-cta:hover {
  background-color: var(--color-primary);
  color: var(--color-surface);
}

.cta-button.primary-cta {
  background-color: var(--color-primary);
  color: #fff;
}

.cta-button.primary-cta:hover {
  background-color: var(--color-primary-dark);
  color: #fff;
}

.cta-button.secondary-cta {
  background-color: var(--color-accent);
  color: #fff;
}

.cta-button.secondary-cta:hover {
  background-color: var(--color-accent-dark);
  color: #fff;
}

.cta-button.large-cta {
  padding: 1rem 2.5rem;
  font-size: 1.1rem;
}

/* Hero Section */
.hero-section {
  padding: 6rem 0;
  text-align: center;
  background-color: var(--color-surface);
}

.hero-content {
  max-width: 800px;
}

.hero-content h1 {
  margin-bottom: 1.5rem;
}

.hero-content .subtitle {
  font-size: clamp(1.1rem, 2vw, 1.25rem);
  color: var(--color-text-secondary);
  margin-bottom: 2.5rem;
}

.hero-image-container {
  margin-top: 4rem;
  padding: 0 1rem;
}

.hero-image-container img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

/* Modules Intro Section */
.modules-intro {
  padding: 6rem 0;
}

.intro-header {
  text-align: center;
  max-width: 750px;
  margin: 0 auto 4rem;
}

.intro-header h2 {
  margin-bottom: 1rem;
}

.modules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.module-card {
  background-color: var(--color-surface);
  padding: 2.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  text-align: center;
  transition: transform var(--transition-fast),
    box-shadow var(--transition-fast);
}

.module-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.module-card svg {
  color: var(--color-primary);
  margin-bottom: 1.5rem;
}

.module-card h3 {
  margin-bottom: 1rem;
}

/* Content Sections */
.content-section {
  padding: 6rem 0;
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 4rem;
}

.section-header svg {
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.section-header h2 {
  margin-bottom: 1rem;
}

.two-column-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.two-column-layout .column ul {
  list-style-type: disc;
  padding-left: 20px;
  margin-top: 1.5rem;
}

.two-column-layout .column ul li {
  margin-bottom: 0.75rem;
  color: var(--color-text-secondary);
}

/* CTA Block */
.cta-block {
  margin-top: 4rem;
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 3rem;
  display: flex;
  align-items: center;
  gap: 3rem;
  border: 1px solid var(--color-border);
}

.cta-block img {
  max-width: 200px;
  height: auto;
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.cta-block.reverse {
  flex-direction: row-reverse;
}

.cta-block .cta-text h3 {
  margin-bottom: 1rem;
}

.cta-block .cta-text p {
  margin-bottom: 1.5rem;
}

.cta-block .cta-icon {
  flex-shrink: 0;
  color: var(--color-accent);
}

/* Accordion */
.accordion-container {
  max-width: 800px;
  margin: 0 auto;
}

.accordion-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  overflow: hidden;
}

.accordion-item:last-child {
  margin-bottom: 0;
}

.accordion-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 1.5rem;
  background-color: transparent;
  border: none;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-text-primary);
  cursor: pointer;
  text-align: left;
}

.accordion-header .accordion-icon {
  transition: transform var(--transition-fast);
  flex-shrink: 0;
  margin-left: 1rem;
}

.accordion-item.active .accordion-icon {
  transform: rotate(180deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-medium),
    padding var(--transition-medium);
}

.accordion-content p {
  padding: 0 1.5rem 1.5rem;
  color: var(--color-text-secondary);
  font-size: 1rem;
}

.accordion-item.active .accordion-content {
  max-height: 500px;
}

/* Tabs */
.tabs-container {
  max-width: 800px;
  margin: 0 auto;
}

.tab-buttons {
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 2rem;
}

.tab-button {
  padding: 1rem 1.5rem;
  background-color: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.tab-button:hover {
  color: var(--color-text-primary);
}

.tab-button.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Community Section */
.community-section {
  padding: 6rem 0;
  background-color: var(--color-surface);
}

.community-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.community-image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.community-text h2 {
  margin-bottom: 1.5rem;
}

.community-text p {
  margin-bottom: 2rem;
}

/* Testimonials */
.testimonials {
  margin-top: 6rem;
  text-align: center;
}

.testimonials h3 {
  margin-bottom: 4rem;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  text-align: left;
}

.testimonial-card {
  background-color: var(--color-bg);
  padding: 2rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
}

.testimonial-card p {
  flex-grow: 1;
  font-style: italic;
  color: var(--color-text-secondary);
}

.testimonial-card footer {
  margin-top: 1.5rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

/* Team Section */
.team-section {
  padding: 6rem 0;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 4rem;
}

.team-member {
  text-align: center;
}

.team-member h4 {
  margin-bottom: 0.25rem;
}

.team-member .role {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.team-link {
  text-align: center;
  margin-top: 4rem;
}

.team-link a {
  font-weight: 600;
  font-size: 1.1rem;
}

/* FAQ Section */
.faq-section {
  padding: 6rem 0;
  background-color: var(--color-surface);
}

.faq-accordion {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.faq-accordion .accordion-item {
  margin-bottom: 0;
  border: none;
  border-bottom: 1px solid var(--color-border);
  border-radius: 0;
}

.faq-accordion .accordion-item:last-child {
  border-bottom: none;
}

.faq-link {
  text-align: center;
  margin-top: 3rem;
}

.faq-link a {
  font-size: 1.1rem;
  font-weight: 600;
}

/* Final CTA */
.final-cta-section {
  padding: 6rem 0;
  background-color: var(--color-primary);
  color: #fff;
  text-align: center;
}

.final-cta-section .container {
  max-width: 700px;
}

.final-cta-section h2 {
  color: #fff;
  margin-bottom: 1.5rem;
}

.final-cta-section p {
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 2.5rem;
}

.final-cta-section .cta-button {
  background-color: #fff;
  color: var(--color-primary);
  border-color: #fff;
}

.final-cta-section .cta-button:hover {
  background-color: transparent;
  color: #fff;
}

/* Footer */
.main-footer {
  padding-top: 5rem;
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 3rem;
  padding-bottom: 4rem;
}

.footer-column h4 {
  margin-bottom: 1.5rem;
  font-size: 1rem;
  font-weight: 600;
}

.footer-column.about p {
  font-size: 0.9rem;
}

.footer-column ul li {
  margin-bottom: 0.75rem;
}

.footer-column ul a {
  color: var(--color-text-secondary);
}

.footer-column ul a:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.footer-column.contact p {
  line-height: 1.6;
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: 2rem 0;
  text-align: center;
  color: var(--color-text-muted);
}

.footer-bottom p {
  margin: 0;
  font-size: 0.9rem;
}

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  padding: 1.5rem;
  z-index: 2000;
  box-shadow: 0 -2px 10px var(--color-shadow-heavy);
  transform: translateY(100%);
  animation: slideUp 0.5s ease-in-out forwards;
}

.cookie-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
}

.cookie-content p {
  margin: 0;
  font-size: 0.9rem;
}

.cookie-button {
  flex-shrink: 0;
  padding: 0.5rem 1rem;
  background-color: var(--color-primary);
  color: #fff;
}

@keyframes slideUp {
  to {
    transform: translateY(0);
  }
}

/* Scroll Animations */
[data-animate] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

[data-animate].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsiveness */
@media (max-width: 992px) {
  .two-column-layout,
  .community-content {
    grid-template-columns: 1fr;
  }

  .community-content {
    text-align: center;
  }

  .community-image {
    order: -1;
    max-width: 500px;
    margin: 0 auto;
  }

  .cta-block {
    flex-direction: column;
    text-align: center;
  }

  .cta-block.reverse {
    flex-direction: column;
  }
}

@media (max-width: 768px) {
  .main-nav {
    display: none;
  }

  html {
    font-size: 15px;
  }

  .hero-section,
  .content-section,
  .community-section,
  .team-section,
  .faq-section {
    padding: 4rem 0;
  }

  .final-cta-section {
    padding: 4rem 0;
  }

  .footer-grid {
    text-align: center;
  }

  .cookie-content {
    flex-direction: column;
    text-align: center;
    gap: 1.5rem;
  }

  .tab-buttons {
    flex-wrap: wrap;
    justify-content: center;
  }

  .tab-button {
    font-size: 1rem;
  }
}

@media (min-width: 1600px) {
  html {
    font-size: 17px;
  }
  .container {
    max-width: 1400px;
  }
}