/* ============================================
   DATAPATH ACADEMY — Portal Styles
   Dark mode, glassmorphism, stunning UI
   ============================================ */

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-deep: #0b0d17;
  --bg-surface: #131627;
  --bg-surface-2: #1a1e35;
  --bg-hover: #1f2442;
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.15);
  --text-primary: #e4e4e7;
  --text-secondary: #8b8fa3;
  --text-muted: #555a70;
  --accent-cyan: #00d4ff;
  --accent-purple: #7b2ff7;
  --accent-gradient: linear-gradient(135deg, #00d4ff, #7b2ff7);
  --accent-gradient-h: linear-gradient(90deg, #00d4ff, #7b2ff7);
  --success: #22c55e;
  --radius: 16px;
  --radius-sm: 12px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* --- Animated Background --- */
.portal-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.portal-bg .orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.15;
  animation: orbFloat 20s ease-in-out infinite;
}

.portal-bg .orb-1 {
  width: 600px;
  height: 600px;
  background: var(--accent-cyan);
  top: -10%;
  left: -10%;
  animation-delay: 0s;
}

.portal-bg .orb-2 {
  width: 500px;
  height: 500px;
  background: var(--accent-purple);
  bottom: -10%;
  right: -10%;
  animation-delay: -7s;
}

.portal-bg .orb-3 {
  width: 400px;
  height: 400px;
  background: #ff006e;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: -14s;
  opacity: 0.08;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(60px, -40px) scale(1.1); }
  50% { transform: translate(-30px, 60px) scale(0.95); }
  75% { transform: translate(40px, 30px) scale(1.05); }
}

/* --- Grid Pattern Overlay --- */
.portal-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* --- Particles Canvas --- */
#particles-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* --- Navbar --- */
.portal-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  backdrop-filter: blur(20px);
  background: rgba(11, 13, 23, 0.7);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.portal-nav.scrolled {
  background: rgba(11, 13, 23, 0.95);
  box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.nav-logo {
  width: 40px;
  height: 40px;
  background: var(--accent-gradient);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  color: white;
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
}

.nav-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.nav-title span {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.nav-link {
  padding: 8px 16px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 8px;
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}

.nav-cta {
  padding: 8px 20px;
  background: var(--accent-gradient);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.nav-cta:hover {
  box-shadow: 0 0 25px rgba(0, 212, 255, 0.4);
  transform: translateY(-1px);
}

/* --- Back to main site --- */
.nav-brand-tag {
  margin-left: 10px;
  padding: 3px 9px;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.25);
  border-radius: 999px;
}

.nav-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  margin-right: 6px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 600;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.02);
  transition: var(--transition);
}

.nav-back svg {
  transition: transform 0.3s ease;
  stroke: currentColor;
}

.nav-back:hover {
  color: var(--text-primary);
  border-color: rgba(0, 212, 255, 0.45);
  background: rgba(0, 212, 255, 0.08);
  box-shadow: 0 0 18px rgba(0, 212, 255, 0.18);
}

.nav-back:hover svg {
  transform: translateX(-3px);
}

.nav-back--mobile {
  display: none;
}

@media (max-width: 768px) {
  .nav-brand-tag { display: none; }
  .nav-back--mobile {
    display: inline-flex;
    margin-right: 0;
    padding: 6px 12px;
    font-size: 0.78rem;
  }
}

/* --- Footer back link --- */
.portal-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.footer-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  color: var(--text-primary);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.08), rgba(123, 47, 247, 0.08));
  transition: var(--transition);
}

.footer-back svg {
  transition: transform 0.3s ease;
}

.footer-back:hover {
  border-color: rgba(0, 212, 255, 0.5);
  box-shadow: 0 8px 24px rgba(0, 212, 255, 0.15);
  transform: translateY(-2px);
}

.footer-back:hover svg {
  transform: translateX(-4px);
}

/* --- Hero Section --- */
.hero {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 100px;
  font-size: 0.85rem;
  color: var(--accent-cyan);
  margin-bottom: 24px;
  animation: fadeInUp 0.6s ease;
}

.hero-badge .pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-cyan);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.5); }
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  animation: fadeInUp 0.6s ease 0.1s both;
}

.hero h1 .gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
  animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-stats {
  display: flex;
  gap: 40px;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.6s ease 0.3s both;
}

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

.hero-stat-number {
  font-size: 2rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: block;
  margin-top: 2px;
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.8rem;
  animation: bounce 2s ease-in-out infinite;
}

.hero-scroll-indicator svg {
  width: 20px;
  height: 20px;
  stroke: var(--text-muted);
}

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

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- Courses Section --- */
.courses-section {
  position: relative;
  z-index: 1;
  padding: 80px 24px 120px;
  max-width: 1280px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 500px;
  margin: 0 auto;
}

/* --- Course Grid --- */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

/* --- Course Card --- */
.course-card {
  position: relative;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
}

.course-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--card-accent, var(--accent-gradient));
  opacity: 0;
  transition: opacity 0.4s ease;
}

.course-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-hover);
  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.4),
    0 0 40px rgba(0, 212, 255, 0.08);
}

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

/* Card Glow Effect */
.course-card .card-glow {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
  border-radius: var(--radius);
}

.course-card:hover .card-glow {
  opacity: 1;
}

/* Card Thumbnail */
.card-thumbnail {
  position: relative;
  height: 180px;
  background: var(--bg-surface-2);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.card-thumbnail .card-icon {
  font-size: 4rem;
  z-index: 2;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  filter: drop-shadow(0 4px 20px rgba(0,0,0,0.3));
}

.course-card:hover .card-icon {
  transform: scale(1.15) rotate(-3deg);
}

.card-thumbnail .card-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.05;
  background-image:
    radial-gradient(circle at 20% 50%, var(--card-color, var(--accent-cyan)) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, var(--card-color-2, var(--accent-purple)) 0%, transparent 50%);
}

.card-thumbnail .card-gradient-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--card-accent, var(--accent-gradient));
}

/* Próximamente badge */
.card-upcoming-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 3;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 6px 10px;
  border-radius: 999px;
  background: linear-gradient(135deg, #ff6b6b, #f59e0b);
  color: #fff;
  text-transform: uppercase;
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.35);
  animation: pulse-upcoming 2s ease-in-out infinite;
}

@keyframes pulse-upcoming {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.course-card.upcoming {
  position: relative;
}

.course-card.upcoming .card-category {
  color: #f59e0b;
  font-weight: 700;
}

.card-meta-cta {
  margin-left: auto;
  font-weight: 700 !important;
  color: var(--card-tag-color, var(--accent-cyan)) !important;
}

/* Card Body */
.card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-category {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--card-tag-color, var(--accent-cyan));
  margin-bottom: 8px;
}

.card-title {
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.card-description {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 16px;
  flex: 1;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.card-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.card-meta-item svg {
  width: 14px;
  height: 14px;
  stroke: var(--text-muted);
}

/* --- Hover Tooltip/Overlay --- */
.card-hover-info {
  position: absolute;
  inset: 0;
  background: rgba(11, 13, 23, 0.92);
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px;
  text-align: center;
  opacity: 0;
  transition: opacity 0.35s ease;
  z-index: 10;
  border-radius: var(--radius);
}

.course-card:hover .card-hover-info {
  opacity: 1;
}

.hover-icon {
  font-size: 3rem;
  margin-bottom: 16px;
  animation: none;
}

.course-card:hover .hover-icon {
  animation: popIn 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55) both;
}

@keyframes popIn {
  from { transform: scale(0.5); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.hover-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.hover-description {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
  max-width: 280px;
}

.hover-stats {
  display: flex;
  gap: 24px;
  margin-bottom: 24px;
}

.hover-stat {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--accent-cyan);
  font-weight: 600;
}

.hover-stat svg {
  width: 16px;
  height: 16px;
  stroke: var(--accent-cyan);
}

.hover-btn {
  padding: 10px 28px;
  background: var(--accent-gradient);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  pointer-events: none;
}

/* --- Card Color Themes --- */
.course-card[data-theme="cyan"] {
  --card-color: #00d4ff;
  --card-color-2: #0099cc;
  --card-accent: linear-gradient(135deg, #00d4ff, #0099cc);
  --card-tag-color: #00d4ff;
}

.course-card[data-theme="purple"] {
  --card-color: #7b2ff7;
  --card-color-2: #c471ed;
  --card-accent: linear-gradient(135deg, #7b2ff7, #c471ed);
  --card-tag-color: #b57efc;
}

.course-card[data-theme="green"] {
  --card-color: #22c55e;
  --card-color-2: #16a34a;
  --card-accent: linear-gradient(135deg, #22c55e, #16a34a);
  --card-tag-color: #4ade80;
}

.course-card[data-theme="orange"] {
  --card-color: #f97316;
  --card-color-2: #ea580c;
  --card-accent: linear-gradient(135deg, #f97316, #ea580c);
  --card-tag-color: #fb923c;
}

.course-card[data-theme="pink"] {
  --card-color: #ec4899;
  --card-color-2: #db2777;
  --card-accent: linear-gradient(135deg, #ec4899, #db2777);
  --card-tag-color: #f472b6;
}

.course-card[data-theme="blue"] {
  --card-color: #3b82f6;
  --card-color-2: #2563eb;
  --card-accent: linear-gradient(135deg, #3b82f6, #2563eb);
  --card-tag-color: #60a5fa;
}

.course-card[data-theme="yellow"] {
  --card-color: #eab308;
  --card-color-2: #ca8a04;
  --card-accent: linear-gradient(135deg, #eab308, #ca8a04);
  --card-tag-color: #facc15;
}

.course-card[data-theme="red"] {
  --card-color: #ef4444;
  --card-color-2: #dc2626;
  --card-accent: linear-gradient(135deg, #ef4444, #dc2626);
  --card-tag-color: #f87171;
}

/* --- Features Section --- */
.features-section {
  position: relative;
  z-index: 1;
  padding: 80px 24px;
  max-width: 1100px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 28px 24px;
  text-align: center;
  transition: var(--transition);
}

.feature-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

.feature-icon {
  font-size: 2.2rem;
  margin-bottom: 14px;
  display: block;
}

.feature-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.feature-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* --- Footer --- */
.portal-footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 40px 24px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.85rem;
}

.portal-footer a {
  color: var(--accent-cyan);
  text-decoration: none;
}

.portal-footer a:hover {
  text-decoration: underline;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .portal-nav {
    padding: 12px 20px;
  }

  .nav-links {
    display: none;
  }

  .hero {
    padding: 100px 20px 60px;
  }

  .hero-stats {
    gap: 24px;
  }

  .courses-section {
    padding: 60px 16px 80px;
  }

  .courses-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .card-thumbnail {
    height: 140px;
  }

  .hero-scroll-indicator {
    display: none;
  }

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

@media (max-width: 480px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}

/* --- Scroll Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }
.reveal-delay-6 { transition-delay: 0.6s; }
.reveal-delay-7 { transition-delay: 0.7s; }
.reveal-delay-8 { transition-delay: 0.8s; }

/* --- Loading Shimmer for cards --- */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* --- Counter animation helper --- */
.count-up {
  display: inline-block;
}

/* ============================================
   VISUAL POLISH — Portal v2
   ============================================ */

/* --- Hero stats: card style --- */
.hero-stats {
  gap: 16px;
  margin-top: 8px;
}

.hero-stat {
  position: relative;
  min-width: 130px;
  padding: 18px 22px;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--border);
  border-radius: 14px;
  backdrop-filter: blur(10px);
  transition: var(--transition);
}

.hero-stat::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 14px;
  padding: 1px;
  background: linear-gradient(135deg, rgba(0,212,255,0.4), rgba(123,47,247,0.4));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}

.hero-stat:hover {
  transform: translateY(-3px);
  background: rgba(255, 255, 255, 0.045);
}

.hero-stat:hover::before {
  opacity: 1;
}

.hero-stat-number {
  font-size: 2.2rem;
  line-height: 1;
}

.hero-stat-label {
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.72rem;
  color: var(--text-secondary);
  margin-top: 6px;
}

/* --- Section dividers --- */
.section-divider {
  position: relative;
  margin: 5rem 0 2.5rem;
  padding-bottom: 1.5rem;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.section-divider::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(0, 212, 255, 0.5) 20%,
    rgba(123, 47, 247, 0.5) 60%,
    transparent 100%);
}

.section-divider-text {
  max-width: 640px;
}

.section-eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 10px;
  padding: 4px 10px;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 999px;
}

.section-divider--pro .section-eyebrow {
  color: #facc15;
  background: rgba(234, 179, 8, 0.08);
  border-color: rgba(234, 179, 8, 0.25);
}

.section-divider h2 {
  margin: 0;
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  text-transform: none;
  color: var(--text-primary);
}

.section-subtitle {
  margin-top: 10px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.55;
  max-width: 560px;
}

.badge-free,
.badge-pro {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.18), rgba(0, 212, 255, 0.18));
  color: #4ade80;
  border: 1px solid rgba(34, 197, 94, 0.35);
  box-shadow: 0 4px 16px rgba(34, 197, 94, 0.15);
  white-space: nowrap;
}

.badge-pro {
  background: linear-gradient(135deg, rgba(234, 179, 8, 0.18), rgba(249, 115, 22, 0.18));
  color: #fbbf24;
  border-color: rgba(234, 179, 8, 0.35);
  box-shadow: 0 4px 16px rgba(234, 179, 8, 0.15);
}

/* --- Course card refinements --- */
.course-card {
  background: linear-gradient(180deg, var(--bg-surface) 0%, rgba(19, 22, 39, 0.85) 100%);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.18);
}

.course-card::before {
  /* top accent bar — sutilmente visible siempre, intenso al hover */
  height: 3px;
  opacity: 0.5;
}

.course-card:hover {
  transform: translateY(-10px);
  border-color: transparent;
  box-shadow:
    0 25px 50px rgba(0, 0, 0, 0.5),
    0 0 0 1px var(--card-color, var(--accent-cyan)),
    0 0 60px -10px var(--card-color, var(--accent-cyan));
}

.course-card:hover::before {
  opacity: 1;
  box-shadow: 0 0 12px var(--card-color, var(--accent-cyan));
}

/* halo radial sutil que sigue al hover */
.course-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  background: radial-gradient(circle at 50% 0%,
    var(--card-color, var(--accent-cyan)) 0%,
    transparent 55%);
  opacity: 0;
  transition: opacity 0.45s ease;
  pointer-events: none;
  mix-blend-mode: screen;
  z-index: 0;
}

.course-card:hover::after {
  opacity: 0.12;
}

.card-thumbnail {
  height: 160px;
  background: linear-gradient(135deg,
    rgba(26, 30, 53, 0.95) 0%,
    rgba(19, 22, 39, 0.95) 100%);
}

.card-thumbnail::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, var(--card-color, var(--accent-cyan)) 0%, transparent 45%),
    radial-gradient(circle at 80% 70%, var(--card-color-2, var(--accent-purple)) 0%, transparent 45%);
  opacity: 0.18;
  transition: opacity 0.4s ease;
}

.course-card:hover .card-thumbnail::before {
  opacity: 0.32;
}

.card-thumbnail .card-icon {
  font-size: 4.5rem;
  filter: drop-shadow(0 6px 20px rgba(0, 0, 0, 0.5));
}

.course-card:hover .card-icon {
  transform: scale(1.18) rotate(-5deg);
}

.card-body {
  padding: 22px 24px 20px;
}

.card-category {
  display: inline-block;
  font-size: 0.68rem;
  padding: 3px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--card-color, var(--accent-cyan)) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--card-color, var(--accent-cyan)) 25%, transparent);
  margin-bottom: 12px;
}

.card-title {
  font-size: 1.15rem;
  line-height: 1.35;
}

.course-card:hover .card-title {
  background: var(--card-accent, var(--accent-gradient));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.card-description {
  font-size: 0.88rem;
}

.card-meta {
  gap: 12px;
}

.card-meta-item {
  padding: 4px 10px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  font-weight: 500;
}

/* --- Mobile tuning --- */
@media (max-width: 768px) {
  .section-divider {
    margin: 3.5rem 0 2rem;
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-stat {
    min-width: 110px;
    padding: 14px 16px;
  }

  .hero-stat-number {
    font-size: 1.7rem;
  }
}

/* ============================================
   HERO CTAs — YouTube, WhatsApp, Sitio Principal
   ============================================ */
.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin: 8px auto 48px;
  max-width: 920px;
  animation: fadeInUp 0.6s ease 0.25s both;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 14px 22px;
  border-radius: 16px;
  text-decoration: none;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  position: relative;
  overflow: hidden;
  min-width: 200px;
}

.hero-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--cta-glow, transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.hero-cta:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 255, 255, 0.18);
}

.hero-cta:hover::before {
  opacity: 1;
}

.hero-cta-icon {
  font-size: 1.6rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

.hero-cta-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.2;
  position: relative;
  z-index: 1;
}

.hero-cta-text strong {
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.hero-cta-text small {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 2px;
}

/* Primary - gradient cyan/purple */
.hero-cta--primary {
  --cta-glow: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(123, 47, 247, 0.2));
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(123, 47, 247, 0.15));
  border-color: rgba(0, 212, 255, 0.35);
}
.hero-cta--primary .hero-cta-icon {
  background: linear-gradient(135deg, #00d4ff, #7b2ff7);
  box-shadow: 0 8px 24px rgba(0, 212, 255, 0.35);
}
.hero-cta--primary:hover {
  box-shadow: 0 12px 32px rgba(0, 212, 255, 0.3);
}

/* YouTube - red */
.hero-cta--yt {
  --cta-glow: linear-gradient(135deg, rgba(255, 0, 0, 0.15), rgba(255, 60, 60, 0.05));
  border-color: rgba(255, 0, 0, 0.3);
}
.hero-cta--yt .hero-cta-icon {
  background: linear-gradient(135deg, #ff0000, #cc0000);
  color: #fff;
  box-shadow: 0 8px 24px rgba(255, 0, 0, 0.3);
}
.hero-cta--yt:hover {
  border-color: rgba(255, 0, 0, 0.6);
  box-shadow: 0 12px 32px rgba(255, 0, 0, 0.28);
}

/* WhatsApp - green */
.hero-cta--wa {
  --cta-glow: linear-gradient(135deg, rgba(37, 211, 102, 0.15), rgba(18, 140, 70, 0.05));
  border-color: rgba(37, 211, 102, 0.3);
}
.hero-cta--wa .hero-cta-icon {
  background: linear-gradient(135deg, #25d366, #128c46);
  color: #fff;
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.28);
}
.hero-cta--wa:hover {
  border-color: rgba(37, 211, 102, 0.6);
  box-shadow: 0 12px 32px rgba(37, 211, 102, 0.28);
}

/* Site - subtle gradient */
.hero-cta--site {
  --cta-glow: linear-gradient(135deg, rgba(0, 212, 255, 0.12), rgba(123, 47, 247, 0.08));
  border-color: rgba(255, 255, 255, 0.15);
}
.hero-cta--site .hero-cta-icon {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
}
.hero-cta--site:hover {
  border-color: rgba(0, 212, 255, 0.4);
  box-shadow: 0 12px 32px rgba(0, 212, 255, 0.15);
}

@media (max-width: 600px) {
  .hero-ctas { gap: 10px; padding: 0 12px; }
  .hero-cta { min-width: 0; flex: 1 1 calc(50% - 5px); padding: 12px 14px; gap: 10px; }
  .hero-cta-icon { width: 38px; height: 38px; font-size: 1.3rem; }
  .hero-cta-text strong { font-size: 0.85rem; }
  .hero-cta-text small { font-size: 0.7rem; }
}

/* ============================================
   NAV SOCIALS — YouTube + WhatsApp icon buttons
   ============================================ */
.nav-socials {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-right: 4px;
}

.nav-social {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  text-decoration: none;
  transition: var(--transition);
}

.nav-social svg { transition: transform 0.25s ease; }

.nav-social:hover {
  transform: translateY(-2px);
  color: #fff;
}

.nav-social:hover svg { transform: scale(1.1); }

.nav-social--yt:hover {
  background: rgba(255, 0, 0, 0.15);
  border-color: rgba(255, 0, 0, 0.5);
  box-shadow: 0 6px 18px rgba(255, 0, 0, 0.28);
  color: #ff4d4d;
}

.nav-social--wa:hover {
  background: rgba(37, 211, 102, 0.15);
  border-color: rgba(37, 211, 102, 0.5);
  box-shadow: 0 6px 18px rgba(37, 211, 102, 0.28);
  color: #25d366;
}

.nav-socials--mobile {
  display: none;
}

@media (max-width: 768px) {
  .nav-socials--mobile {
    display: inline-flex;
    gap: 6px;
  }
  .nav-socials--mobile .nav-social {
    width: 32px;
    height: 32px;
  }
}

/* ============================================
   FOOTER CTAs — Reforzar enlaces sociales
   ============================================ */
.portal-footer {
  padding: 48px 24px 32px;
}

.footer-cta-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 20px;
}

.footer-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 11px 20px;
  border-radius: 999px;
  color: #fff;
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  transition: var(--transition);
}

.footer-cta svg { transition: transform 0.25s ease; }

.footer-cta:hover {
  transform: translateY(-2px);
}

.footer-cta--yt:hover {
  border-color: rgba(255, 0, 0, 0.55);
  background: rgba(255, 0, 0, 0.08);
  box-shadow: 0 8px 22px rgba(255, 0, 0, 0.22);
  color: #ff4d4d;
}

.footer-cta--wa:hover {
  border-color: rgba(37, 211, 102, 0.55);
  background: rgba(37, 211, 102, 0.08);
  box-shadow: 0 8px 22px rgba(37, 211, 102, 0.22);
  color: #25d366;
}

.footer-cta--site {
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(123, 47, 247, 0.1));
  border-color: rgba(0, 212, 255, 0.3);
}

.footer-cta--site:hover {
  border-color: rgba(0, 212, 255, 0.55);
  box-shadow: 0 8px 22px rgba(0, 212, 255, 0.22);
  color: #00d4ff;
}

.footer-cta--site:hover svg { transform: translateX(-3px); }

.footer-copy {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin: 0;
}