/* ==========================================================================
   IELTS Assistance Bangladesh - Bright Red & White Design System
   Inspired by Mentors Bangladesh Aesthetics
   ========================================================================== */

:root {
  --primary-red: #E50914;
  --primary-red-hover: #C10712;
  --primary-red-light: rgba(229, 9, 20, 0.08);
  --primary-red-border: rgba(229, 9, 20, 0.2);
  --dark-red: #B80710;
  
  --white: #FFFFFF;
  --light-bg: #F9FAFB;
  --card-bg: #FFFFFF;
  
  --text-dark: #111827;
  --text-muted: #4B5563;
  --text-light: #6B7280;
  --border-color: #E5E7EB;
  
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 28px rgba(0, 0, 0, 0.12);
  --shadow-red: 0 8px 20px rgba(229, 9, 20, 0.25);
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-family: 'Outfit', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--text-dark);
  background-color: #FFFFFF;
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  background-color: #FFFFFF;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

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

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Utility Classes */
.text-red { color: var(--primary-red); }
.text-dark { color: var(--text-dark); }
.bg-red { background-color: var(--primary-red); color: var(--white); }
.bg-light { background-color: var(--light-bg); }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 50px;
  font-size: 0.825rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.badge-red { 
  background: var(--primary-red); 
  color: var(--white); 
}

.badge-red-outline { 
  background: var(--primary-red-light); 
  color: var(--primary-red); 
  border: 1px solid var(--primary-red-border); 
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 1rem;
  transition: var(--transition);
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.1rem;
  border-radius: var(--radius-md);
}

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

.btn-primary:hover {
  background: var(--primary-red-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(229, 9, 20, 0.35);
}

.btn-secondary {
  background: var(--white);
  color: var(--primary-red);
  border: 2px solid var(--primary-red);
}

.btn-secondary:hover {
  background: var(--primary-red);
  color: var(--white);
  transform: translateY(-2px);
}

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

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

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

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

/* Header & Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: #FFFFFF;
  border-bottom: 2px solid var(--primary-red);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo img {
  height: 52px;
  width: auto;
  border-radius: 6px;
  object-fit: contain;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  color: var(--primary-red);
  font-weight: 900;
  font-size: 1.25rem;
  letter-spacing: -0.5px;
  line-height: 1.1;
}

.brand-subtitle {
  color: var(--text-dark);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  color: var(--text-dark);
  font-weight: 700;
  font-size: 0.95rem;
  transition: var(--transition);
  position: relative;
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--primary-red);
  border-radius: 2px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.mobile-menu-toggle {
  display: none;
  color: var(--text-dark);
  font-size: 1.8rem;
  padding: 8px;
}

/* Mobile Nav Drawer */
.mobile-nav-drawer {
  position: fixed;
  top: 84px;
  left: 0;
  right: 0;
  background: #FFFFFF;
  padding: 24px;
  border-bottom: 3px solid var(--primary-red);
  box-shadow: var(--shadow-lg);
  transform: translateY(-150%);
  transition: transform 0.35s ease-in-out;
  z-index: 999;
}

.mobile-nav-drawer.open {
  transform: translateY(0);
}

.mobile-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
}

.mobile-nav-link {
  color: var(--text-dark);
  font-size: 1.1rem;
  font-weight: 700;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-color);
  display: block;
}

/* Top Banner / Announcement Bar */
.top-bar {
  background: var(--primary-red);
  color: var(--white);
  padding: 10px 0;
  font-size: 0.875rem;
  font-weight: 700;
  text-align: center;
  position: relative;
  z-index: 1001;
}

.top-bar-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.top-bar-pulse {
  width: 8px;
  height: 8px;
  background-color: var(--white);
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.7);
  animation: pulse-ring 1.5s infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(255, 255, 255, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(255, 255, 255, 0); }
}

/* Hero Section */
.hero-section {
  position: relative;
  padding: 160px 0 100px;
  background: var(--white);
  color: var(--text-dark);
  overflow: hidden;
  border-bottom: 1px solid var(--border-color);
}

.hero-bg-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 90% 10%, rgba(229, 9, 20, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 10% 90%, rgba(229, 9, 20, 0.03) 0%, transparent 50%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.hero-title {
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -1px;
  color: var(--text-dark);
}

.hero-title span.highlight {
  color: var(--primary-red);
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-muted);
  font-weight: 500;
  line-height: 1.7;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 36px;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 2px solid var(--border-color);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--primary-red);
  line-height: 1;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 600;
  margin-top: 4px;
}

/* Hero Media Card */
.hero-media-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero-media-card {
  position: relative;
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 4px solid var(--primary-red);
  background: var(--white);
}

.hero-media-card img {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
}

.hero-badge-float {
  position: absolute;
  bottom: 24px;
  left: 24px;
  background: #FFFFFF;
  padding: 14px 22px;
  border-radius: var(--radius-md);
  border: 2px solid var(--primary-red);
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--text-dark);
  box-shadow: var(--shadow-md);
}

.hero-badge-icon {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background: var(--primary-red);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--white);
}

/* Section Header styling */
.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 60px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 900;
  letter-spacing: -0.5px;
  color: var(--text-dark);
}

.section-title span {
  color: var(--primary-red);
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* About Us Section */
.about-section {
  padding: 100px 0;
  background: var(--light-bg);
  border-bottom: 1px solid var(--border-color);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 16px;
}

.feature-box {
  background: var(--white);
  padding: 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.feature-box:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-red);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: var(--primary-red-light);
  color: var(--primary-red);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 14px;
}

.feature-title {
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--text-dark);
}

.feature-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.instructor-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px;
  color: var(--text-dark);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 2px solid var(--primary-red);
}

.instructor-header {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 24px;
}

.instructor-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  border: 3px solid var(--primary-red);
  object-fit: cover;
}

.instructor-info h3 {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--text-dark);
}

.instructor-info p {
  color: var(--primary-red);
  font-weight: 700;
  font-size: 0.95rem;
}

.instructor-quote {
  font-style: italic;
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.7;
  border-left: 4px solid var(--primary-red);
  padding-left: 16px;
}

/* Courses Section */
.courses-section {
  padding: 100px 0;
  background: var(--white);
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 32px;
}

.course-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 2px solid var(--border-color);
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
  position: relative;
  box-shadow: var(--shadow-sm);
}

.course-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-red);
}

.course-card.featured {
  border: 2px solid var(--primary-red);
  box-shadow: var(--shadow-red);
}

.course-top-badge {
  position: absolute;
  top: -14px;
  right: 28px;
  background: var(--primary-red);
  color: var(--white);
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.course-title {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--text-dark);
  margin-bottom: 8px;
}

.course-tagline {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  min-height: 44px;
}

.course-price-box {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 24px;
  padding: 16px;
  background: var(--primary-red-light);
  border-radius: var(--radius-md);
  border: 1px solid var(--primary-red-border);
}

.course-price {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--primary-red);
}

.course-original-price {
  font-size: 1.1rem;
  color: var(--text-muted);
  text-decoration: line-through;
}

.course-meta-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.course-meta-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.925rem;
  color: var(--text-dark);
}

.course-meta-item svg {
  color: var(--primary-red);
  flex-shrink: 0;
  margin-top: 3px;
}

.course-actions {
  display: flex;
  gap: 12px;
  margin-top: auto;
}

.course-actions .btn {
  flex: 1;
}

/* Success & Videos Section */
.success-section {
  padding: 100px 0;
  background: var(--light-bg);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.video-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-bottom: 60px;
}

.video-card {
  background: var(--white);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 2px solid var(--border-color);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.video-card:hover {
  border-color: var(--primary-red);
}

.video-embed {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
}

.video-embed iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-title {
  padding: 20px;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-dark);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.testimonial-card {
  background: var(--white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-red);
}

.testimonial-user {
  display: flex;
  align-items: center;
  gap: 14px;
}

.testimonial-user img {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--primary-red);
}

.testimonial-info h4 {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-dark);
}

.testimonial-info p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.band-badge {
  background: var(--primary-red);
  color: var(--white);
  font-size: 0.85rem;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: 6px;
  align-self: flex-start;
}

.testimonial-quote {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Blog Section */
.blog-section {
  padding: 100px 0;
  background: var(--white);
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}

.blog-card {
  background: var(--white);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.blog-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-red);
}

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

.blog-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

.blog-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.blog-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-dark);
  line-height: 1.35;
}

.blog-summary {
  font-size: 0.925rem;
  color: var(--text-muted);
}

.blog-read-btn {
  margin-top: auto;
  color: var(--primary-red);
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.95rem;
}

/* FAQ Section */
.faq-section {
  padding: 100px 0;
  background: var(--light-bg);
  border-top: 1px solid var(--border-color);
}

.faq-search-box {
  max-width: 500px;
  margin: 0 auto 40px;
  position: relative;
}

.faq-search-input {
  width: 100%;
  padding: 16px 20px 16px 48px;
  border-radius: 50px;
  border: 2px solid var(--border-color);
  font-size: 1rem;
  outline: none;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  background: var(--white);
}

.faq-search-input:focus {
  border-color: var(--primary-red);
  box-shadow: 0 0 0 4px rgba(229, 9, 20, 0.1);
}

.faq-search-icon {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.faq-accordion {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--white);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.active {
  border-color: var(--primary-red);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-dark);
  cursor: pointer;
  user-select: none;
}

.faq-question:hover {
  color: var(--primary-red);
}

.faq-answer {
  padding: 0 24px 24px;
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.7;
  display: none;
}

.faq-item.active .faq-answer {
  display: block;
}

/* Contact Section & Footer */
.contact-section {
  padding: 100px 0;
  background: var(--white);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 50px;
}

.contact-info-card {
  background: var(--primary-red);
  color: var(--white);
  padding: 40px;
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: 28px;
  box-shadow: var(--shadow-red);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.2);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.contact-text h4 {
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 4px;
}

.contact-text p, .contact-text a {
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.95rem;
}

.social-buttons {
  display: flex;
  gap: 12px;
  margin-top: 10px;
}

.social-btn {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.2);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: var(--transition);
}

.social-btn:hover {
  background: var(--white);
  color: var(--primary-red);
  transform: translateY(-2px);
}

/* Contact Form */
.contact-form-card {
  background: var(--light-bg);
  padding: 40px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
}

.form-group {
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-dark);
}

.form-control {
  width: 100%;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border-color);
  font-size: 1rem;
  font-family: inherit;
  outline: none;
  transition: var(--transition);
  background: var(--white);
}

.form-control:focus {
  border-color: var(--primary-red);
  box-shadow: 0 0 0 3px rgba(229, 9, 20, 0.1);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

/* Footer */
.footer {
  background: var(--primary-red);
  color: var(--white);
  padding: 80px 0 30px;
  border-top: 2px solid var(--dark-red);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 60px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-title {
  color: var(--white);
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.9);
}

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

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.9);
}

/* Floating WhatsApp Button */
.floating-whatsapp {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 1000;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #25d366;
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  box-shadow: 0 10px 25px rgba(37, 211, 102, 0.4);
  transition: var(--transition);
  animation: whatsapp-pulse 2s infinite;
}

.floating-whatsapp:hover {
  transform: scale(1.1);
  box-shadow: 0 14px 30px rgba(37, 211, 102, 0.6);
}

@keyframes whatsapp-pulse {
  0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7); }
  70% { box-shadow: 0 0 0 15px rgba(37, 211, 102, 0); }
  100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

/* Modals System */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(6px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

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

.modal-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  position: relative;
  transform: scale(0.95);
  transition: var(--transition);
  border: 2px solid var(--primary-red);
}

.modal-overlay.open .modal-card {
  transform: scale(1);
}

.modal-card.large {
  max-width: 850px;
}

.modal-header {
  padding: 24px 32px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--light-bg);
}

.modal-header h3 {
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--text-dark);
}

.modal-close {
  font-size: 1.5rem;
  color: var(--text-muted);
  padding: 4px;
  transition: var(--transition);
}

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

.modal-body {
  padding: 32px;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  top: 100px;
  right: 24px;
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.toast {
  background: var(--primary-red);
  color: var(--white);
  padding: 16px 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* Responsive Media Queries */
@media (max-width: 992px) {
  .hero-grid, .about-grid, .video-grid, .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-title { font-size: 2.5rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; }
  .mobile-menu-toggle { display: block; }
}

@media (max-width: 600px) {
  .hero-title { font-size: 2rem; }
  .about-features { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .courses-grid { grid-template-columns: 1fr; }
  .hero-stats { flex-direction: column; align-items: flex-start; gap: 16px; }
}