/* ==========================================================================
   English Studio by Marcelo Roballo - Primary Stylesheet
   Design System: Navy Blue (#0C1D48), Vibrant Red (#E52335), Pure White (#FFFFFF)
   ========================================================================== */

/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800&family=Poppins:wght@300;400;500;600;700;800&display=swap');

/* --- Root CSS Variables & Tokens --- */
:root {
  /* Brand Palette (Strictly from Logo) */
  --clr-navy-dark: #07122E;
  --clr-navy-main: #0C1D48;
  --clr-navy-light: #162C69;
  --clr-red-main: #E52335;
  --clr-red-hover: #C81425;
  --clr-red-light: rgba(229, 35, 53, 0.08);
  --clr-white: #FFFFFF;
  --clr-gray-50: #F8FAFC;
  --clr-gray-100: #F1F5F9;
  --clr-gray-200: #E2E8F0;
  --clr-gray-400: #94A3B8;
  --clr-gray-600: #64748B;
  --clr-gray-800: #1E293B;

  /* Typography */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Shadows & Glassmorphism */
  --shadow-sm: 0 2px 8px rgba(12, 29, 72, 0.06);
  --shadow-md: 0 8px 24px rgba(12, 29, 72, 0.1);
  --shadow-lg: 0 16px 36px rgba(12, 29, 72, 0.15);
  --shadow-red: 0 8px 25px rgba(229, 35, 53, 0.35);

  /* Borders & Radius */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  /* Layout */
  --container-max: 1240px;
  --header-height: 95px;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  text-size-adjust: 100%;
}

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

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

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* --- Utility Container --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.section-padding {
  padding-top: 5.5rem;
  padding-bottom: 5.5rem;
}

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

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background-color: var(--clr-red-light);
  color: var(--clr-red-main);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.badge-navy {
  background-color: rgba(12, 29, 72, 0.08);
  color: var(--clr-navy-main);
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  color: var(--clr-navy-main);
  line-height: 1.25;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--clr-gray-600);
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 3.5rem;
}

.text-highlight {
  color: var(--clr-red-main);
  position: relative;
  display: inline-block;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.9rem 2rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition-normal);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--clr-red-main);
  color: var(--clr-white);
  box-shadow: var(--shadow-red);
}

.btn-primary:hover {
  background-color: var(--clr-red-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(229, 35, 53, 0.45);
}

.btn-secondary {
  background-color: var(--clr-navy-main);
  color: var(--clr-white);
}

.btn-secondary:hover {
  background-color: var(--clr-navy-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--clr-navy-main);
  color: var(--clr-navy-main);
}

.btn-outline:hover {
  background-color: var(--clr-navy-main);
  color: var(--clr-white);
  transform: translateY(-2px);
}

.btn-outline-red {
  background-color: transparent;
  border-color: var(--clr-red-main);
  color: var(--clr-red-main);
}

.btn-outline-red:hover {
  background-color: var(--clr-red-main);
  color: var(--clr-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-red);
}

/* ==========================================================================
   1. HEADER / NAVIGATION
   ========================================================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  border-bottom: 1px solid var(--clr-gray-200);
  transition: all var(--transition-normal);
}

.header.scrolled {
  height: 80px;
  box-shadow: var(--shadow-md);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.logo-img {
  height: 70px;
  width: auto;
  object-fit: contain;
  transition: height var(--transition-fast);
}

.header.scrolled .logo-img {
  height: 58px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2.25rem;
  list-style: none;
}

.nav-link {
  font-weight: 600;
  color: var(--clr-navy-main);
  font-size: 0.95rem;
  position: relative;
  padding: 0.5rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2.5px;
  background-color: var(--clr-red-main);
  border-radius: var(--radius-full);
  transition: width var(--transition-normal);
}

.nav-link:hover,
.nav-link.active {
  color: var(--clr-red-main);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-cta {
  margin-left: 0.5rem;
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--clr-navy-main);
}

.mobile-toggle svg {
  width: 28px;
  height: 28px;
  stroke: var(--clr-navy-main);
  stroke-width: 2.2;
}

/* ==========================================================================
   2. HERO SECTION
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  padding-top: calc(var(--header-height) + 3rem);
  padding-bottom: 5rem;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, rgba(7, 18, 46, 0.92) 0%, rgba(12, 29, 72, 0.85) 100%),
              url('assets/images/hero-bg.jpg') center/cover no-repeat;
  color: var(--clr-white);
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 80px;
  background: linear-gradient(to top, var(--clr-white), transparent);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-content {
  max-width: 680px;
}

.hero-badge {
  background-color: rgba(229, 35, 53, 0.2);
  color: #FF6B7A;
  border: 1px solid rgba(229, 35, 53, 0.4);
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.25rem, 4.5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.18;
  color: var(--clr-white);
  margin-bottom: 1.25rem;
}

.hero-title .highlight {
  color: var(--clr-red-main);
  background: linear-gradient(90deg, #FF4D5E, #E52335);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.25rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 2.25rem;
  border-left: 3.5px solid var(--clr-red-main);
  padding-left: 1rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  align-items: center;
}

.hero-card-preview {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.hero-card-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.hero-avatar {
  width: 75px;
  height: 75px;
  border-radius: 50%;
  border: 3px solid var(--clr-red-main);
  object-fit: cover;
  object-position: center top;
}

.hero-director-info h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--clr-white);
}

.hero-director-info p {
  font-size: 0.85rem;
  color: var(--clr-gray-400);
}

.hero-stats-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.hero-stat-item {
  background: rgba(255, 255, 255, 0.05);
  padding: 1rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-stat-number {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--clr-red-main);
  line-height: 1;
}

.hero-stat-label {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.8);
  margin-top: 0.3rem;
}

/* Banner Stats Bar */
.trust-bar {
  margin-top: -3.5rem;
  position: relative;
  z-index: 10;
}

.trust-bar-card {
  background-color: var(--clr-white);
  border-radius: var(--radius-lg);
  padding: 1.75rem 2.5rem;
  box-shadow: var(--shadow-lg);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  border: 1px solid var(--clr-gray-200);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.trust-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background-color: var(--clr-red-light);
  color: var(--clr-red-main);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.trust-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--clr-red-main);
}

.trust-text h5 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--clr-navy-main);
}

.trust-text p {
  font-size: 0.8rem;
  color: var(--clr-gray-600);
}

/* ==========================================================================
   3. SECCIÓN: NUESTRA OFERTA DE CURSOS
   ========================================================================== */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}

.course-card {
  background-color: var(--clr-white);
  border: 1px solid var(--clr-gray-200);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.course-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(12, 29, 72, 0.2);
}

.course-card.featured {
  border: 2px solid var(--clr-red-main);
  background: linear-gradient(180deg, rgba(229, 35, 53, 0.03) 0%, var(--clr-white) 100%);
  box-shadow: var(--shadow-md);
}

.featured-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background-color: var(--clr-red-main);
  color: var(--clr-white);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.course-icon-wrap {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  background-color: rgba(12, 29, 72, 0.06);
  color: var(--clr-navy-main);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  transition: all var(--transition-normal);
}

.course-card.featured .course-icon-wrap {
  background-color: var(--clr-red-main);
  color: var(--clr-white);
}

.course-icon-wrap svg {
  width: 32px;
  height: 32px;
}

.course-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--clr-navy-main);
  margin-bottom: 0.75rem;
}

.course-desc {
  font-size: 0.95rem;
  color: var(--clr-gray-600);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.course-desc strong {
  color: var(--clr-navy-main);
  font-weight: 700;
}

.course-features {
  list-style: none;
  margin-bottom: 2rem;
  margin-top: auto;
}

.course-features li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.875rem;
  color: var(--clr-gray-800);
  margin-bottom: 0.75rem;
}

.course-features li svg {
  width: 18px;
  height: 18px;
  stroke: var(--clr-red-main);
  flex-shrink: 0;
}

.course-card .btn {
  width: 100%;
}

/* ==========================================================================
   4. SECCIÓN: EXÁMENES INTERNACIONALES
   ========================================================================== */
.exams-section {
  background-color: var(--clr-gray-50);
  position: relative;
}

.exams-container-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3.5rem;
  align-items: center;
}

.exams-info-side {
  max-width: 600px;
}

.exams-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  margin-top: 2rem;
}

.exam-card {
  background-color: var(--clr-white);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  border: 1px solid var(--clr-gray-200);
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.exam-card:hover {
  transform: translateY(-4px);
  border-color: var(--clr-navy-light);
  box-shadow: var(--shadow-md);
}

.exam-badge-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--clr-red-main);
  background-color: var(--clr-red-light);
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  margin-bottom: 0.5rem;
}

.exam-card h4 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--clr-navy-main);
  margin-bottom: 0.3rem;
}

.exam-card p {
  font-size: 0.85rem;
  color: var(--clr-gray-600);
}

.exams-visual-card {
  background-color: var(--clr-navy-main);
  border-radius: var(--radius-lg);
  padding: 3rem 2.5rem;
  color: var(--clr-white);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.exams-visual-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(229, 35, 53, 0.35) 0%, transparent 70%);
}

.exams-stats-row {
  display: flex;
  gap: 2rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.exam-stat h3 {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--clr-red-main);
  line-height: 1;
}

.exam-stat p {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.8);
  margin-top: 0.2rem;
}

/* ==========================================================================
   5. SECCIÓN: TUTORÍAS ESPECIALIZADAS
   ========================================================================== */
.tutoring-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem;
  margin-top: 2.5rem;
}

.tutoring-card {
  background-color: var(--clr-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--clr-gray-200);
  padding: 3rem 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.tutoring-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--clr-navy-main);
}

.tutoring-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 5px;
  height: 100%;
  background-color: var(--clr-navy-main);
  transition: background-color var(--transition-fast);
}

.tutoring-card:hover::before {
  background-color: var(--clr-red-main);
}

.tutoring-header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.tutoring-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  background-color: rgba(12, 29, 72, 0.08);
  color: var(--clr-navy-main);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.tutoring-icon svg {
  width: 30px;
  height: 30px;
}

.tutoring-title-wrap h3 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--clr-navy-main);
}

.tutoring-title-wrap p {
  font-size: 0.9rem;
  color: var(--clr-red-main);
  font-weight: 600;
}

.tutoring-body p {
  font-size: 1rem;
  color: var(--clr-gray-600);
  line-height: 1.65;
}

.tutoring-list {
  list-style: none;
  margin-top: 1rem;
}

.tutoring-list li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.925rem;
  color: var(--clr-gray-800);
  margin-bottom: 0.75rem;
}

.tutoring-list li svg {
  width: 20px;
  height: 20px;
  stroke: var(--clr-red-main);
  flex-shrink: 0;
}

.tutoring-footer {
  margin-top: auto;
  padding-top: 1rem;
}

.tutoring-cta-center {
  margin-top: 3.5rem;
}

/* ==========================================================================
   6. SECCIÓN: TESTIMONIOS (SLIDER)
   ========================================================================== */
.testimonials-section {
  background-color: var(--clr-gray-50);
}

.carousel-wrapper {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  overflow: hidden;
  padding: 1rem 0 3rem 0;
}

.carousel-track {
  display: flex;
  transition: transform var(--transition-normal);
}

.testimonial-card {
  min-width: 100%;
  padding: 0 1rem;
}

.testimonial-box {
  background-color: var(--clr-white);
  border-radius: var(--radius-lg);
  padding: 3rem 2.5rem;
  border: 1px solid var(--clr-gray-200);
  box-shadow: var(--shadow-md);
  text-align: center;
  position: relative;
}

.testimonial-quote-icon {
  width: 48px;
  height: 48px;
  color: var(--clr-red-light);
  fill: var(--clr-red-main);
  margin: 0 auto 1.25rem auto;
  opacity: 0.8;
}

.testimonial-quote-text {
  font-size: 1.15rem;
  color: var(--clr-navy-main);
  font-style: italic;
  line-height: 1.7;
  margin-bottom: 2rem;
}

.testimonial-stars {
  color: #FFC107;
  display: flex;
  justify-content: center;
  gap: 0.3rem;
  margin-bottom: 1.25rem;
}

.testimonial-author {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.author-avatar {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background-color: var(--clr-navy-main);
  color: var(--clr-white);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  border: 2px solid var(--clr-red-main);
}

.author-info h4 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--clr-navy-main);
}

.author-info p {
  font-size: 0.85rem;
  color: var(--clr-gray-600);
}

/* Carousel Nav Controls */
.carousel-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.carousel-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--clr-white);
  border: 1px solid var(--clr-gray-200);
  color: var(--clr-navy-main);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.carousel-btn:hover {
  background-color: var(--clr-red-main);
  color: var(--clr-white);
  border-color: var(--clr-red-main);
  box-shadow: var(--shadow-red);
}

.carousel-dots {
  display: flex;
  gap: 0.5rem;
}

.carousel-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--clr-gray-200);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.carousel-dot.active {
  width: 28px;
  border-radius: var(--radius-full);
  background-color: var(--clr-red-main);
}

/* ==========================================================================
   7. SECCIÓN: PREGUNTAS FRECUENTES (FAQ ACCORDION)
   ========================================================================== */
.faq-accordion-wrap {
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  background-color: var(--clr-white);
  border: 1px solid var(--clr-gray-200);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  overflow: hidden;
  transition: all var(--transition-fast);
}

.faq-item.active {
  border-color: var(--clr-navy-light);
  box-shadow: var(--shadow-md);
}

.faq-header {
  width: 100%;
  padding: 1.5rem 1.75rem;
  background: none;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--clr-navy-main);
  gap: 1rem;
}

.faq-icon-toggle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--clr-gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition-normal);
}

.faq-item.active .faq-icon-toggle {
  background-color: var(--clr-red-main);
  color: var(--clr-white);
  transform: rotate(180deg);
}

.faq-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0, 1, 0, 1), padding 0.35s ease;
  padding: 0 1.75rem;
}

.faq-item.active .faq-body {
  max-height: 500px;
  padding: 0 1.75rem 1.5rem 1.75rem;
  transition: max-height 0.4s ease-in-out, padding 0.3s ease;
}

.faq-body p {
  color: var(--clr-gray-600);
  font-size: 0.975rem;
  line-height: 1.65;
}

/* ==========================================================================
   8. SECCIÓN: CONTACTO & FOOTER INTEGRADO
   ========================================================================== */
.footer-section {
  background-color: var(--clr-navy-dark);
  color: var(--clr-white);
  padding-top: 5rem;
  padding-bottom: 2rem;
  position: relative;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1.2fr;
  gap: 3.5rem;
  margin-bottom: 4rem;
}

.footer-brand .logo-img-white {
  height: 72px;
  width: auto;
  margin-bottom: 1.25rem;
}

.footer-brand p {
  color: var(--clr-gray-400);
  font-size: 0.925rem;
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-btn {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--clr-white);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.social-btn:hover {
  background-color: var(--clr-red-main);
  transform: translateY(-3px);
  box-shadow: var(--shadow-red);
}

.social-btn svg {
  width: 20px;
  height: 20px;
}

.footer-title {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--clr-white);
  margin-bottom: 1.5rem;
  position: relative;
}

.footer-title::after {
  content: '';
  position: absolute;
  bottom: -0.5rem;
  left: 0;
  width: 36px;
  height: 3px;
  background-color: var(--clr-red-main);
  border-radius: var(--radius-full);
}

.contact-info-list {
  list-style: none;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.25rem;
  font-size: 0.95rem;
  color: var(--clr-gray-200);
}

.contact-info-item svg {
  width: 22px;
  height: 22px;
  stroke: var(--clr-red-main);
  flex-shrink: 0;
  margin-top: 0.2rem;
}

.contact-info-item a:hover {
  color: var(--clr-red-main);
}

.footer-form-card {
  background-color: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.form-group {
  margin-bottom: 1.2rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--clr-gray-200);
  margin-bottom: 0.4rem;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.15);
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--clr-white);
  font-size: 0.925rem;
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--clr-red-main);
  background-color: rgba(255, 255, 255, 0.12);
  box-shadow: 0 0 0 3px rgba(229, 35, 53, 0.2);
}

.form-select option {
  background-color: var(--clr-navy-dark);
  color: var(--clr-white);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.footer-form-card .btn {
  width: 100%;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--clr-gray-400);
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

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

/* ==========================================================================
   9. INTERACTIVE MODAL & FLOATING WIDGETS
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(7, 18, 46, 0.75);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-container {
  background-color: var(--clr-white);
  border-radius: var(--radius-lg);
  max-width: 580px;
  width: 100%;
  padding: 2.5rem;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
  position: relative;
  transform: translateY(20px);
  transition: transform var(--transition-normal);
}

.modal-overlay.active .modal-container {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--clr-gray-600);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--clr-gray-100);
  color: var(--clr-red-main);
}

.modal-title {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--clr-navy-main);
  margin-bottom: 0.5rem;
}

.modal-desc {
  font-size: 0.95rem;
  color: var(--clr-gray-600);
  margin-bottom: 1.5rem;
}

/* Floating WhatsApp Widget */
.whatsapp-widget {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 990;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: #25D366;
  color: var(--clr-white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.4);
  transition: all var(--transition-normal);
  animation: pulse-whatsapp 2s infinite;
}

.whatsapp-widget:hover {
  transform: scale(1.1);
  box-shadow: 0 12px 30px rgba(37, 211, 102, 0.6);
}

.whatsapp-widget svg {
  width: 32px;
  height: 32px;
  fill: currentColor;
}

@keyframes pulse-whatsapp {
  0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.6); }
  70% { box-shadow: 0 0 0 16px rgba(37, 211, 102, 0); }
  100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: 6.5rem;
  right: 2.25rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--clr-navy-main);
  color: var(--clr-white);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 980;
  box-shadow: var(--shadow-md);
}

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

.back-to-top:hover {
  background-color: var(--clr-red-main);
  transform: translateY(-3px);
}

/* Success Alert Toast */
.toast-alert {
  position: fixed;
  top: 100px;
  right: 2rem;
  background-color: var(--clr-navy-main);
  color: var(--clr-white);
  padding: 1rem 1.5rem;
  border-left: 4px solid var(--clr-red-main);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 2100;
  display: flex;
  align-items: center;
  gap: 1rem;
  transform: translateX(120%);
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* Learning Environments Gallery */
.environments-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 3.5rem;
}

.environment-card {
  background-color: var(--clr-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--clr-gray-200);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.environment-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--clr-red-main);
}

.environment-img-wrap {
  position: relative;
  width: 100%;
  height: 230px;
  overflow: hidden;
}

.environment-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.environment-card:hover .environment-img-wrap img {
  transform: scale(1.08);
}

.environment-tag {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background-color: var(--clr-navy-main);
  color: var(--clr-white);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  box-shadow: var(--shadow-sm);
}

.environment-content {
  padding: 1.75rem 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.environment-content h4 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--clr-navy-main);
  margin-bottom: 0.5rem;
}

.environment-content p {
  font-size: 0.9rem;
  color: var(--clr-gray-600);
  line-height: 1.6;
}

/* ==========================================================================
   10. RESPONSIVE BREAKPOINTS
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-subtitle {
    border-left: none;
    border-top: 3.5px solid var(--clr-red-main);
    padding-left: 0;
    padding-top: 1rem;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-card-preview {
    display: none;
  }
  .trust-bar-card {
    grid-template-columns: repeat(2, 1fr);
  }
  .courses-grid {
    grid-template-columns: 1fr;
  }
  .exams-container-grid {
    grid-template-columns: 1fr;
  }
  .tutoring-grid {
    grid-template-columns: 1fr;
  }
  .environments-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 768px) {
  .header {
    height: 82px;
  }
  .logo-img {
    height: 56px;
  }
  .nav-menu {
    position: fixed;
    top: 82px;
    left: 0;
    width: 100%;
    background-color: var(--clr-white);
    flex-direction: column;
    padding: 2rem 1.5rem;
    gap: 1.5rem;
    box-shadow: var(--shadow-lg);
    clip-path: circle(0% at 100% 0);
    transition: clip-path 0.4s ease-in-out;
  }
  .nav-menu.mobile-open {
    clip-path: circle(140% at 100% 0);
  }
  .mobile-toggle {
    display: block;
  }
  .trust-bar-card {
    grid-template-columns: 1fr;
  }
  .exams-list {
    grid-template-columns: 1fr;
  }
  .testimonial-box {
    padding: 2rem 1.25rem;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}