/* ==========================================================================
   TALLER INTELIGENCIA ARTIFICIAL EN SALUD - MODERN DESIGN SYSTEM
   ========================================================================== */

:root {
  /* Color Palette */
  --bg-dark: #070D18;
  --bg-card: rgba(13, 27, 42, 0.7);
  --bg-card-hover: rgba(20, 40, 65, 0.85);
  --primary-cyan: #00F2FE;
  --primary-blue: #4FACFE;
  --accent-gold: #F39C12;
  --accent-gold-glow: #D4AF37;
  --accent-green: #00E676;
  --paypal-blue: #0070BA;
  --paypal-hover: #005EA6;
  
  --text-main: #F0F4F8;
  --text-muted: #94A3B8;
  --text-bright: #FFFFFF;
  
  --border-light: rgba(255, 255, 255, 0.1);
  --border-glow: rgba(0, 242, 254, 0.3);
  --border-gold: rgba(243, 156, 18, 0.4);
  
  --shadow-glow-cyan: 0 0 25px rgba(0, 242, 254, 0.25);
  --shadow-glow-gold: 0 0 25px rgba(243, 156, 18, 0.25);
  --shadow-card: 0 20px 40px rgba(0, 0, 0, 0.4);
  
  --font-main: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-heading: 'Outfit', system-ui, -apple-system, sans-serif;
  
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-main);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(0, 242, 254, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 85% 50%, rgba(79, 172, 254, 0.06) 0%, transparent 40%),
    radial-gradient(circle at 50% 85%, rgba(243, 156, 18, 0.05) 0%, transparent 40%);
  background-attachment: fixed;
}

/* Container */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-bright);
}

.text-gradient {
  background: linear-gradient(135deg, var(--primary-cyan) 0%, var(--primary-blue) 50%, #A855F7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-gradient-gold {
  background: linear-gradient(135deg, #FFE066 0%, var(--accent-gold) 50%, #E67E22 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid var(--border-glow);
  color: var(--primary-cyan);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  text-align: center;
}

.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  max-width: 700px;
  margin: 0 auto 3rem auto;
  font-size: 1.1rem;
}

/* Navigation Header */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: var(--transition-normal);
  padding: 1.2rem 0;
  background: rgba(7, 13, 24, 0.6);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.navbar.scrolled {
  padding: 0.8rem 0;
  background: rgba(7, 13, 24, 0.92);
  border-bottom: 1px solid var(--border-glow);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-bright);
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
}

.brand-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary-cyan), var(--primary-blue));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--bg-dark);
  font-size: 1.3rem;
  box-shadow: var(--shadow-glow-cyan);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition-fast);
  position: relative;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-cyan);
  transition: var(--transition-fast);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-bright);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.8rem;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: var(--transition-normal);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-cyan) 0%, var(--primary-blue) 100%);
  color: #040D1A;
  box-shadow: 0 4px 20px rgba(0, 242, 254, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 242, 254, 0.6);
  filter: brightness(1.1);
}

.btn-paypal {
  background: linear-gradient(135deg, #0070BA 0%, #00457C 100%);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 4px 20px rgba(0, 112, 186, 0.4);
}

.btn-paypal:hover {
  transform: translateY(-2px);
  background: linear-gradient(135deg, #005EA6 0%, #003058 100%);
  box-shadow: 0 8px 30px rgba(0, 112, 186, 0.6);
}

.btn-gold {
  background: linear-gradient(135deg, #FFE066 0%, var(--accent-gold) 100%);
  color: #1A0F00;
  box-shadow: var(--shadow-glow-gold);
}

.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(243, 156, 18, 0.5);
}

.btn-whatsapp {
  background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
  color: #FFFFFF;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.3);
}

.btn-whatsapp:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(37, 211, 102, 0.5);
}

.btn-outline {
  background: transparent;
  color: var(--text-bright);
  border: 1px solid var(--border-glow);
}

.btn-outline:hover {
  background: rgba(0, 242, 254, 0.1);
  border-color: var(--primary-cyan);
  color: var(--primary-cyan);
}

/* HERO SECTION */
.hero {
  padding: 10rem 0 5rem 0;
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 1.2rem;
  background: rgba(13, 27, 42, 0.8);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-full);
  margin-bottom: 1.5rem;
  backdrop-filter: blur(10px);
}

.hero-badge .pulse-dot {
  width: 10px;
  height: 10px;
  background-color: var(--accent-green);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-green);
  animation: pulse 1.8s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 230, 118, 0.7); }
  70% { transform: scale(1.1); box-shadow: 0 0 0 10px rgba(0, 230, 118, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 230, 118, 0); }
}

.hero-title {
  font-size: 3.2rem;
  letter-spacing: -0.5px;
  margin-bottom: 1rem;
}

.hero-subtitle {
  font-size: 1.35rem;
  color: var(--primary-cyan);
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero-description {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  max-width: 600px;
}

/* Event Info Badges Grid */
.hero-meta-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

.meta-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  backdrop-filter: blur(10px);
  transition: var(--transition-fast);
}

.meta-card:hover {
  border-color: var(--border-glow);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.meta-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(0, 242, 254, 0.1);
  color: var(--primary-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.meta-icon.gold {
  background: rgba(243, 156, 18, 0.1);
  color: var(--accent-gold);
}

.meta-info label {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.meta-info span {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-bright);
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

/* COUNTDOWN TIMER CARD */
.countdown-box {
  background: linear-gradient(145deg, rgba(13, 27, 42, 0.9) 0%, rgba(7, 13, 24, 0.95) 100%);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  box-shadow: var(--shadow-card), var(--shadow-glow-cyan);
  backdrop-filter: blur(15px);
  position: relative;
  overflow: hidden;
}

.countdown-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-cyan), var(--primary-blue), var(--accent-gold));
}

.countdown-title {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}

.timer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
}

.timer-unit {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1rem 0.5rem;
}

.timer-number {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--primary-cyan);
  line-height: 1;
}

.timer-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
  text-transform: uppercase;
}

.hero-poster-wrapper {
  position: relative;
}

.hero-poster-wrapper::before {
  content: '';
  position: absolute;
  inset: -15px;
  background: radial-gradient(circle, var(--border-glow) 0%, transparent 70%);
  border-radius: var(--radius-lg);
  z-index: 0;
}

.hero-poster {
  position: relative;
  z-index: 1;
  width: 100%;
  border-radius: var(--radius-lg);
  border: 2px solid var(--border-glow);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
  transition: var(--transition-normal);
}

.hero-poster:hover {
  transform: scale(1.02);
  box-shadow: 0 25px 60px rgba(0, 242, 254, 0.3);
}

/* SECTIONS COMMON */
section {
  padding: 6rem 0;
  position: relative;
}

/* INSTRUCTOR SECTION */
.instructor-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 3rem;
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 3rem;
  align-items: center;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(10px);
}

.instructor-img-wrapper {
  position: relative;
  text-align: center;
}

.instructor-img-wrapper::after {
  content: '';
  position: absolute;
  inset: -10px;
  border-radius: 50%;
  border: 2px dashed var(--primary-cyan);
  animation: rotateCircle 30s linear infinite;
  z-index: 0;
}

@keyframes rotateCircle {
  100% { transform: rotate(360deg); }
}

.instructor-img {
  width: 260px;
  height: 260px;
  border-radius: 50%;
  object-fit: cover;
  object-position: top center;
  border: 4px solid var(--primary-cyan);
  box-shadow: var(--shadow-glow-cyan);
  position: relative;
  z-index: 1;
}

.instructor-info h3 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.instructor-role {
  color: var(--accent-gold);
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
}

.instructor-bio {
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 1.5rem;
}

.instructor-highlights {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.95rem;
  color: var(--text-bright);
}

.highlight-item i {
  color: var(--primary-cyan);
}

/* PROGRAM / SYLLABUS SECTION */
.syllabus-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.syllabus-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.syllabus-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--primary-cyan), var(--primary-blue));
  opacity: 0;
  transition: var(--transition-fast);
}

.syllabus-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-glow);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-card);
}

.syllabus-card:hover::before {
  opacity: 1;
}

.syllabus-number {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-cyan);
  margin-bottom: 1rem;
}

.syllabus-card h4 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.syllabus-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* MODALITIES & LOCATION */
.modality-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.modality-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  position: relative;
  backdrop-filter: blur(10px);
  transition: var(--transition-normal);
}

.modality-card.highlight {
  border-color: var(--border-gold);
  box-shadow: var(--shadow-glow-gold);
}

.modality-card:hover {
  transform: translateY(-4px);
}

.modality-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  background: rgba(0, 242, 254, 0.1);
  color: var(--primary-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
}

.modality-card.highlight .modality-icon {
  background: rgba(243, 156, 18, 0.15);
  color: var(--accent-gold);
}

.modality-card h3 {
  font-size: 1.6rem;
  margin-bottom: 0.75rem;
}

.modality-address {
  color: var(--text-bright);
  font-weight: 600;
  margin-bottom: 1rem;
}

.modality-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.modality-list li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.modality-list li i {
  color: var(--primary-cyan);
}

/* REGISTRATION SECTION & FORM */
.registration-section {
  background: linear-gradient(180deg, rgba(7, 13, 24, 0.5) 0%, rgba(13, 27, 42, 0.8) 100%);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.registration-container {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 4rem;
  align-items: start;
}

.registration-info-side h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.price-banner {
  background: rgba(243, 156, 18, 0.1);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin: 2rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.price-tag {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent-gold);
}

.price-sub {
  font-size: 0.9rem;
  color: var(--text-muted);
  display: block;
}

.form-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-card), var(--shadow-glow-cyan);
  backdrop-filter: blur(15px);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
  color: var(--text-bright);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.9rem 1.2rem;
  background: rgba(7, 13, 24, 0.8);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  color: var(--text-bright);
  font-family: var(--font-main);
  font-size: 0.95rem;
  transition: var(--transition-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--primary-cyan);
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.3);
  background: rgba(7, 13, 24, 0.95);
}

.form-select option {
  background-color: var(--bg-dark);
  color: var(--text-bright);
}

.form-textarea {
  resize: vertical;
  min-height: 90px;
}

.form-actions {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 2rem;
}

.paypal-divider {
  display: flex;
  align-items: center;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin: 0.5rem 0;
}

.paypal-divider::before, .paypal-divider::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid var(--border-light);
}

.paypal-divider::before {
  margin-right: 0.5rem;
}

.paypal-divider::after {
  margin-left: 0.5rem;
}

/* FAQ SECTION */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-fast);
}

.faq-item.active {
  border-color: var(--border-glow);
  background: var(--bg-card-hover);
}

.faq-question {
  padding: 1.25rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 700;
  font-size: 1.1rem;
  user-select: none;
}

.faq-question i {
  color: var(--primary-cyan);
  transition: var(--transition-fast);
}

.faq-item.active .faq-question i {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
  padding: 0 1.5rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding-bottom: 1.5rem;
  transition: max-height 0.3s cubic-bezier(1, 0, 1, 0);
}

/* FOOTER */
footer {
  background: rgba(4, 8, 16, 0.95);
  border-top: 1px solid var(--border-light);
  padding: 3rem 0 2rem 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

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

.footer-link {
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition-fast);
}

.footer-link:hover {
  color: var(--primary-cyan);
}

/* FLOATING WHATSAPP BUTTON */
.floating-whatsapp {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  box-shadow: 0 5px 25px rgba(37, 211, 102, 0.5);
  z-index: 999;
  text-decoration: none;
  transition: var(--transition-normal);
  animation: floatBounce 3s ease-in-out infinite;
}

.floating-whatsapp:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 35px rgba(37, 211, 102, 0.7);
}

@keyframes floatBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* SUCCESS MODAL */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(4, 8, 16, 0.85);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-normal);
  padding: 1.5rem;
}

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

.modal-card {
  background: var(--bg-dark);
  border: 2px solid var(--primary-cyan);
  border-radius: var(--radius-lg);
  max-width: 540px;
  width: 100%;
  padding: 2.5rem;
  text-align: center;
  box-shadow: var(--shadow-card), var(--shadow-glow-cyan);
  position: relative;
  transform: scale(0.9);
  transition: var(--transition-normal);
}

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

.modal-icon {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: rgba(0, 230, 118, 0.15);
  color: var(--accent-green);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  margin: 0 auto 1.5rem auto;
  box-shadow: 0 0 25px rgba(0, 230, 118, 0.3);
}

.modal-card h3 {
  font-size: 1.8rem;
  margin-bottom: 0.75rem;
}

.modal-card p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.modal-buttons {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.modal-close-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.25rem;
  cursor: pointer;
}

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

/* RESPONSIVE DESIGN */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-description {
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-cta-group {
    justify-content: center;
  }
  
  .instructor-card {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .instructor-highlights {
    align-items: center;
  }
  
  .registration-container {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background: rgba(7, 13, 24, 0.98);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    transform: translateY(-150%);
    transition: var(--transition-normal);
    border-bottom: 1px solid var(--border-glow);
  }
  
  .nav-links.active {
    transform: translateY(0);
  }
  
  .mobile-toggle {
    display: block;
  }
  
  .hero-title {
    font-size: 2.2rem;
  }
  
  .modality-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-meta-grid {
    grid-template-columns: 1fr;
  }
  
  .timer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}