/* ===== RESET & BASE ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

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

ul {
  list-style: none;
}

/* ===== CSS VARIABLES ===== */
:root {
  --primary: #2563EB;
  --primary-dark: #1E40AF;
  --primary-light: #DBEAFE;
  --secondary: #F59E0B;
  --secondary-dark: #D97706;
  --accent: #EC4899;
  --bg: #FFFBF5;
  --bg-alt: #FEF3E2;
  --bg-white: #FFFFFF;
  --text: #1F2937;
  --text-light: #6B7280;
  --text-white: #FFFFFF;
  --spanish: #DC2626;
  --italian: #16A34A;
  --french: #2563EB;
  --border: #E5E7EB;
  --shadow: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
  --radius: 12px;
  --radius-sm: 8px;
  --header-height: 72px;
}

/* ===== LANGUAGE TOGGLE ===== */
html.lang-fr [data-lang="en"] { display: none; }
html.lang-en [data-lang="fr"] { display: none; }

/* ===== UTILITIES ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  text-align: center;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  color: var(--text-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

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

.section-subtitle {
  color: var(--text-light);
  font-size: 1.1rem;
  margin-bottom: 2rem;
  text-align: center;
}

/* ===== HEADER ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 251, 245, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  height: var(--header-height);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text);
  flex-shrink: 0;
}

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

.logo img {
  border-radius: 50%;
  vertical-align: middle;
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  object-fit: cover;
}

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

.nav a {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  color: var(--text);
  font-weight: 500;
  font-size: 0.95rem;
  transition: background 0.2s, color 0.2s;
}

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

.lang-switch {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
}

.lang-btn {
  background: none;
  border: 2px solid transparent;
  border-radius: 50%;
  padding: 4px;
  cursor: pointer;
  transition: border-color 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.lang-btn img {
  border-radius: 50%;
  width: 28px;
  height: 28px;
  object-fit: cover;
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: all 0.3s;
}

/* ===== HERO ===== */
.hero {
  background: linear-gradient(rgba(255,255,255,0.55), rgba(255,255,255,0.75)), url('../images/tree_of_languages_image.png') center/cover no-repeat;
  text-align: center;
  padding: 80px 20px;
}

.hero-logo {
  margin: 0 auto 24px;
  border-radius: 50%;
  box-shadow: var(--shadow-lg);
}

.hero h1 {
  font-family: Georgia, serif;
  font-size: 2.5rem;
  color: var(--text);
  margin-bottom: 12px;
}

.hero-tagline {
  font-size: 1.3rem;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 8px;
}

.hero-location {
  color: var(--text-light);
  font-size: 1.1rem;
  margin-bottom: 32px;
}

/* ===== INTRO ===== */
.intro {
  padding: 48px 20px;
  text-align: center;
  background: var(--bg-white);
}

.intro p {
  max-width: 800px;
  margin: 0 auto;
  font-size: 1.1rem;
  color: var(--text-light);
}

/* ===== COURSES ===== */
.courses {
  padding: 80px 20px;
  background: var(--bg);
}

.courses h2 {
  text-align: center;
  font-family: Georgia, serif;
  font-size: 2rem;
  margin-bottom: 8px;
}

.course-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: 2rem;
}

.course-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: box-shadow 0.3s, transform 0.3s;
  border-top: 4px solid var(--primary);
}

.course-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.course-card--spanish { border-top-color: var(--spanish); }
.course-card--italian { border-top-color: var(--italian); }
.course-card--french { border-top-color: var(--french); }
.course-card--soutien { border-top-color: var(--secondary); }

.course-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.course-card h3 {
  padding: 16px 20px 4px;
  font-size: 1.3rem;
}

.course-card > p {
  padding: 0 20px 12px;
  color: var(--text-light);
  font-size: 0.95rem;
}

.accordion-toggle {
  display: block;
  width: 100%;
  padding: 12px 20px;
  background: none;
  border: none;
  border-top: 1px solid var(--border);
  color: var(--primary);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  text-align: left;
  transition: background 0.2s;
}

.accordion-toggle:hover {
  background: var(--primary-light);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.accordion-content.open {
  max-height: 2000px;
}

.level {
  padding: 12px 20px;
  border-top: 1px solid var(--border);
}

.level h4 {
  font-size: 0.95rem;
  margin-bottom: 4px;
  color: var(--text);
}

.level p {
  font-size: 0.9rem;
  color: var(--text-light);
}

/* Course Formats */
.course-formats {
  margin-top: 48px;
  text-align: center;
}

.course-formats h3 {
  font-size: 1.3rem;
  margin-bottom: 20px;
}

.format-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}

.format-item {
  background: var(--bg-white);
  padding: 16px 24px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
}

.format-icon {
  font-size: 1.3rem;
}

/* ===== ABOUT ===== */
.about {
  padding: 80px 20px;
  background: var(--bg-alt);
}

.about h2 {
  text-align: center;
  font-family: Georgia, serif;
  font-size: 2rem;
  margin-bottom: 2rem;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
}

.about-text h3 {
  font-size: 1.3rem;
  margin: 24px 0 12px;
}

.about-text p {
  margin-bottom: 12px;
  color: var(--text-light);
}

.benefits-list {
  margin-top: 12px;
}

.benefits-list li {
  padding: 8px 0;
  padding-left: 20px;
  position: relative;
}

.benefits-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 700;
}

.about-image img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}

/* Founder */
.founder {
  margin-top: 64px;
  padding-top: 48px;
  border-top: 2px solid var(--border);
}

.founder-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: start;
}

.founder-image {
  position: sticky;
  top: calc(var(--header-height) + 20px);
}

.founder-image img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  max-width: 300px;
  margin: 0 auto;
}

.founder-text h3 {
  font-family: Georgia, serif;
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.founder-text p {
  margin-bottom: 12px;
  color: var(--text-light);
}

/* ===== REVIEWS ===== */
.reviews {
  padding: 80px 20px;
  background: var(--bg);
}

.reviews h2 {
  text-align: center;
  font-family: Georgia, serif;
  font-size: 2rem;
  margin-bottom: 8px;
}

.reviews-carousel {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding: 20px 0;
  scrollbar-width: thin;
}

.reviews-carousel::-webkit-scrollbar {
  height: 6px;
}

.reviews-carousel::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

.review-card {
  flex: 0 0 300px;
  scroll-snap-align: start;
  background: var(--bg-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  position: relative;
}

.review-card img {
  width: 100%;
  height: auto;
}

/* ===== BLOG ===== */
.blog-section {
  padding: 80px 20px;
  background: var(--bg-alt);
}

.blog-section h2 {
  text-align: center;
  font-family: Georgia, serif;
  font-size: 2rem;
  margin-bottom: 2rem;
}

.blog-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.blog-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: box-shadow 0.3s, transform 0.3s;
}

.blog-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

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

.blog-card h3 {
  padding: 16px 20px 8px;
  font-size: 1.1rem;
}

.blog-card p {
  padding: 0 20px;
  color: var(--text-light);
  font-size: 0.95rem;
}

.blog-card .btn {
  margin: 16px 20px 20px;
}

/* ===== CONTACT ===== */
.contact {
  padding: 80px 20px;
  background: var(--bg);
}

.contact h2 {
  text-align: center;
  font-family: Georgia, serif;
  font-size: 2rem;
  margin-bottom: 8px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  margin-top: 2rem;
}

.contact-form {
  background: var(--bg-white);
  padding: 32px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.2s;
  background: var(--bg);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
}

.btn-submit {
  width: 100%;
}

.btn-submit.loading {
  opacity: 0.7;
  pointer-events: none;
}

.form-status {
  margin-top: 16px;
  padding: 12px;
  border-radius: var(--radius-sm);
  text-align: center;
  font-weight: 500;
  display: none;
}

.form-status.success {
  display: block;
  background: #D1FAE5;
  color: #065F46;
}

.form-status.error {
  display: block;
  background: #FEE2E2;
  color: #991B1B;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item h3 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.contact-item p {
  color: var(--text-light);
}

.contact-item a {
  color: var(--primary);
}

.social-links {
  display: flex;
  gap: 12px;
  margin-top: 8px;
}

.social-links a {
  color: var(--text);
  transition: color 0.2s;
}

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

.contact-map {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

/* ===== FOOTER ===== */
.footer {
  background: var(--text);
  color: var(--text-white);
  padding: 48px 20px 24px;
}

.footer a {
  color: rgba(255,255,255,0.8);
}

.footer a:hover {
  color: var(--text-white);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-bottom: 32px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-brand span {
  font-weight: 700;
  font-size: 1.2rem;
}

.footer-brand p {
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
}

.footer-brand img {
  border-radius: 50%;
}

.footer-links h4,
.footer-contact h4 {
  margin-bottom: 12px;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: rgba(255,255,255,0.5);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-contact p {
  color: rgba(255,255,255,0.8);
  margin-bottom: 4px;
  font-size: 0.95rem;
}

.footer-contact .social-links a {
  color: rgba(255,255,255,0.8);
}

.footer-contact .social-links a:hover {
  color: var(--text-white);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  color: rgba(255,255,255,0.5);
  font-size: 0.85rem;
}

.mentions-toggle {
  background: none;
  border: 1px solid rgba(255,255,255,0.3);
  color: rgba(255,255,255,0.7);
  padding: 6px 16px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s;
}

.mentions-toggle:hover {
  border-color: rgba(255,255,255,0.6);
  color: var(--text-white);
}

/* ===== MODAL ===== */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal.open {
  display: flex;
}

.modal-content {
  background: var(--bg-white);
  color: var(--text);
  border-radius: var(--radius);
  padding: 32px;
  max-width: 600px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
  position: relative;
}

.modal-content h3 {
  font-size: 1.3rem;
  margin-bottom: 16px;
}

.modal-content p {
  margin-bottom: 12px;
  font-size: 0.95rem;
  line-height: 1.6;
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 16px;
  background: none;
  border: none;
  font-size: 1.8rem;
  cursor: pointer;
  color: var(--text-light);
  line-height: 1;
}

.modal-close:hover {
  color: var(--text);
}

/* ===== SCROLL ANIMATIONS ===== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== RESPONSIVE ===== */

/* Tablet */
@media (min-width: 768px) {
  .hero h1 { font-size: 3rem; }

  .course-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .founder-grid {
    grid-template-columns: 300px 1fr;
  }

  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .footer-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Desktop */
@media (min-width: 1024px) {
  .hero h1 { font-size: 3.5rem; }

  .course-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .blog-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .review-card {
    flex: 0 0 320px;
  }
}

/* Mobile */
@media (max-width: 767px) {
  .nav-toggle {
    display: flex;
  }

  .nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 16px;
    flex-direction: column;
    box-shadow: var(--shadow-md);
  }

  .nav.open {
    display: flex;
  }

  .nav a {
    padding: 12px 16px;
  }

  .hero {
    padding: 48px 20px;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .hero-tagline {
    font-size: 1.1rem;
  }

  .logo-text {
    display: none;
  }

  .review-card {
    flex: 0 0 260px;
  }

  .contact-form {
    padding: 20px;
  }

  .courses, .about, .reviews, .blog-section, .contact {
    padding: 48px 20px;
  }
}

/* ===== BLOG PAGE STYLES ===== */
.blog-page {
  padding-top: var(--header-height);
}

.breadcrumb {
  padding: 20px 0;
  color: var(--text-light);
  font-size: 0.9rem;
}

.breadcrumb a {
  color: var(--primary);
}

.blog-article {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 20px 80px;
}

.blog-article h1 {
  font-family: Georgia, serif;
  font-size: 2rem;
  margin-bottom: 24px;
  line-height: 1.3;
}

.blog-article .blog-hero-image {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: var(--radius);
  margin-bottom: 32px;
}

.blog-article p {
  margin-bottom: 16px;
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-light);
}

.blog-cta {
  margin-top: 48px;
  padding: 32px;
  background: var(--primary-light);
  border-radius: var(--radius);
  text-align: center;
}

.blog-cta h3 {
  margin-bottom: 12px;
}

.related-posts {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 2px solid var(--border);
}

.related-posts h3 {
  margin-bottom: 16px;
  font-size: 1.2rem;
}

.related-posts-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.related-post-link {
  display: block;
  padding: 16px;
  background: var(--bg-white);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  color: var(--text);
  transition: box-shadow 0.2s;
}

.related-post-link:hover {
  box-shadow: var(--shadow-md);
  color: var(--primary);
}

@media (min-width: 768px) {
  .related-posts-grid {
    grid-template-columns: 1fr 1fr;
  }

  .blog-article h1 {
    font-size: 2.5rem;
  }
}