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

:root {
  --bg: #ffffff;
  --bg2: #f8fafc;
  --bg3: #f1f5f9;
  --border: #e2e8f0;
  --text: #0f172a;
  --text2: #475569;
  --text3: #94a3b8;
  --accent: #f97316;
  --accent-dark: #ea6c0e;
  --accent-light: #fff7ed;
  --blue: #3b82f6;
  --green: #22c55e;
  --purple: #a855f7;
  --radius: 14px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 4px 16px rgba(0,0,0,.06);
  --shadow-lg: 0 8px 32px rgba(0,0,0,.10);
}

html { scroll-behavior: smooth; }

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== NAVBAR ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 32px;
}
.logo {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}
.logo span { color: var(--accent); }
.logo em { font-style: normal; font-size: 0.75rem; font-weight: 600; color: var(--text3); margin-left: 2px; }
.nav-links {
  display: flex;
  list-style: none;
  gap: 4px;
  margin-left: auto;
}
.nav-links a {
  text-decoration: none;
  color: var(--text2);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 8px;
  transition: background 0.15s, color 0.15s;
}
.nav-links a:hover { background: var(--bg3); color: var(--text); }
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  margin-left: auto;
  color: var(--text);
}

/* ===== HERO ===== */
.hero {
  padding: 72px 24px 64px;
  max-width: 1100px;
  margin: 0 auto;
}
.hero-inner {
  display: flex;
  align-items: center;
  gap: 60px;
}
.hero-text { flex: 1; }
.hero-greeting {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 14px;
}
.hero-text h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 18px;
}
.hero-text h1 span { color: var(--accent); }
.hero-desc {
  font-size: 1.05rem;
  color: var(--text2);
  max-width: 500px;
  margin-bottom: 28px;
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 13px 24px;
  border-radius: 10px;
  transition: background 0.2s, transform 0.1s;
  border: none;
  cursor: pointer;
}
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-1px); }
.btn-ghost {
  display: inline-flex;
  align-items: center;
  background: transparent;
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 13px 24px;
  border-radius: 10px;
  border: 1.5px solid var(--border);
  transition: background 0.15s;
}
.btn-ghost:hover { background: var(--bg3); }
.hero-stats {
  display: flex;
  align-items: center;
  gap: 20px;
}
.stat { text-align: center; }
.stat strong { display: block; font-size: 1.4rem; font-weight: 800; color: var(--text); line-height: 1; }
.stat span { font-size: 0.78rem; color: var(--text3); font-weight: 500; }
.stat-divider { width: 1px; height: 32px; background: var(--border); }

/* AVATAR */
.hero-avatar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}
.avatar-ring {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent) 0%, #fbbf24 100%);
  padding: 4px;
  box-shadow: var(--shadow-lg);
}
.avatar-img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--bg3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  font-weight: 800;
  color: var(--accent);
}
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}
.tag {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text2);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 999px;
}

/* ===== CATEGORIAS ===== */
.categorias {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
  background: var(--bg2);
}
.cats {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.cat {
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text2);
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: all 0.15s;
}
.cat:hover { background: var(--bg3); color: var(--text); }
.cat.active { background: var(--accent-light); color: var(--accent); border-color: #fed7aa; }

/* ===== CURSOS ===== */
.cursos-section { padding: 64px 0; }
.section-header { text-align: center; margin-bottom: 48px; }
.section-header h2 {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}
.section-header p { color: var(--text2); font-size: 1rem; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

/* CARD */
.card {
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: relative;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}
.card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}
.card.featured { border-color: var(--accent); background: var(--accent-light); }
.card.coming-soon { opacity: 0.75; }
.card.coming-soon:hover { transform: none; border-color: var(--border); box-shadow: none; }

.card-badge {
  position: absolute;
  top: -13px;
  left: 20px;
  background: var(--accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.card-badge.gray { background: var(--text3); }

.card-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.tag-pill {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.tag-pill.orange { background: #fff7ed; color: var(--accent); }
.tag-pill.blue { background: #eff6ff; color: var(--blue); }
.tag-pill.green { background: #f0fdf4; color: var(--green); }
.tag-pill.purple { background: #faf5ff; color: var(--purple); }

.card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
}
.card > p {
  font-size: 0.9rem;
  color: var(--text2);
  line-height: 1.65;
  flex: 1;
}
.card-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.card-features li { font-size: 0.85rem; color: var(--text2); }

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 8px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 12px;
}
.precio { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.precio-actual { font-size: 1.6rem; font-weight: 800; color: var(--text); }
.precio-original { font-size: 0.9rem; color: var(--text3); text-decoration: line-through; }
.descuento {
  font-size: 0.78rem;
  font-weight: 700;
  background: #dcfce7;
  color: #16a34a;
  padding: 2px 8px;
  border-radius: 999px;
}

.btn-comprar {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 11px 20px;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
  white-space: nowrap;
  font-family: inherit;
}
.btn-comprar:hover { background: var(--accent-dark); transform: translateY(-1px); }
.btn-comprar:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

.btn-ghost-sm {
  display: inline-block;
  text-decoration: none;
  color: var(--text2);
  font-weight: 600;
  font-size: 0.88rem;
  padding: 9px 18px;
  border-radius: 9px;
  border: 1.5px solid var(--border);
  transition: background 0.15s;
}
.btn-ghost-sm:hover { background: var(--bg3); }

/* ===== PAGO OPCIONES ===== */
.pago-opciones {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 4px;
}
.pago-divider {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text3);
  font-size: 0.78rem;
  font-weight: 500;
}
.pago-divider::before,
.pago-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}
.btn-stripe {
  width: 100%;
  padding: 11px;
  background: var(--text);
  color: #fff;
  border: none;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  font-family: inherit;
  transition: opacity 0.2s, transform 0.1s;
}
.btn-stripe:hover { opacity: 0.85; transform: translateY(-1px); }
.btn-stripe:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

/* ===== GARANTIA ===== */
.garantia-section {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 40px 24px;
}
.garantia-inner {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
  justify-content: center;
}
.garantia-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  max-width: 280px;
}
.g-icon { font-size: 1.8rem; flex-shrink: 0; }
.garantia-item strong { font-size: 0.95rem; font-weight: 700; display: block; margin-bottom: 2px; }
.garantia-item p { font-size: 0.85rem; color: var(--text2); }



/* ===== FOOTER ===== */
.footer { background: var(--text); color: #e2e8f0; padding: 60px 0 0; }
.footer-inner {
  display: flex;
  gap: 60px;
  flex-wrap: wrap;
  padding-bottom: 48px;
}
.footer-brand { flex: 1; min-width: 200px; }
.footer .logo { color: #fff; }
.footer .logo span { color: var(--accent); }
.footer-brand > p {
  color: #94a3b8;
  font-size: 0.88rem;
  margin-top: 10px;
  margin-bottom: 20px;
  max-width: 260px;
  line-height: 1.6;
}
.social-links { display: flex; gap: 10px; }
.social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: #1e293b;
  border-radius: 8px;
  text-decoration: none;
  color: #94a3b8;
  font-size: 0.85rem;
  transition: background 0.15s, color 0.15s;
}
.social-links a:hover { background: var(--accent); color: #fff; }
.footer-links { display: flex; gap: 48px; flex-wrap: wrap; }
.footer-col { display: flex; flex-direction: column; gap: 10px; }
.footer-col strong { font-size: 0.88rem; font-weight: 700; color: #fff; margin-bottom: 4px; }
.footer-col a { text-decoration: none; color: #94a3b8; font-size: 0.88rem; transition: color 0.15s; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid #1e293b;
  padding: 20px 24px;
  text-align: center;
  color: #475569;
  font-size: 0.82rem;
}

/* ===== INNER PAGES ===== */
.page-hero {
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  padding: 64px 24px;
  text-align: center;
}
.page-hero h1 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.page-hero p { color: var(--text2); font-size: 1.05rem; max-width: 500px; margin: 0 auto; }

.page-content {
  max-width: 800px;
  margin: 60px auto;
  padding: 0 24px 80px;
}

/* ABOUT */
.about-profile {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.about-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #fbbf24);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.8rem;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
}
.about-name h2 { font-size: 1.8rem; font-weight: 800; margin-bottom: 4px; }
.about-name p { color: var(--text2); font-size: 0.95rem; }

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 48px;
}
.about-stat-card {
  background: var(--bg2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
}
.about-stat-card strong { display: block; font-size: 2rem; font-weight: 800; color: var(--accent); margin-bottom: 4px; }
.about-stat-card span { font-size: 0.85rem; color: var(--text2); }

.about-bio { font-size: 1rem; color: var(--text2); line-height: 1.8; margin-bottom: 32px; }
.about-skills { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.skill-tag {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
}

/* CONTACT */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.contact-info h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 12px; }
.contact-info p { color: var(--text2); font-size: 0.95rem; line-height: 1.7; margin-bottom: 24px; }
.contact-links { display: flex; flex-direction: column; gap: 12px; }
.contact-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text2);
  font-size: 0.92rem;
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  transition: background 0.15s, border-color 0.15s;
}
.contact-link:hover { background: var(--bg2); border-color: var(--accent); }
.contact-link span:first-child { font-size: 1.2rem; }

.contact-form {
  background: var(--bg2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}
.contact-form h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 20px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 6px; color: var(--text); }
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid var(--border);
  border-radius: 9px;
  font-size: 0.92rem;
  font-family: inherit;
  background: var(--bg);
  color: var(--text);
  transition: border-color 0.15s;
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus { border-color: var(--accent); }
.form-group textarea { resize: vertical; min-height: 100px; }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .hero-inner { flex-direction: column-reverse; gap: 32px; text-align: center; }
  .hero-actions { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-avatar { order: -1; }
  .avatar-ring { width: 140px; height: 140px; }
  .avatar-img { font-size: 2.5rem; }
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg);
    flex-direction: column;
    padding: 16px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-inner { gap: 36px; }
}


/* ===== PAGE-SPECIFIC STYLES (moved from inline) ===== */

/* ── index.html ── */
#toast {
      position: fixed;
      bottom: 24px;
      left: 50%;
      transform: translateX(-50%) translateY(20px);
      background: #1e293b;
      color: #f1f5f9;
      padding: 12px 24px;
      border-radius: 10px;
      font-size: 0.9rem;
      font-weight: 500;
      opacity: 0;
      transition: opacity 0.25s, transform 0.25s;
      pointer-events: none;
      z-index: 999;
      white-space: nowrap;
    }
    #toast.visible {
      opacity: 1;
      transform: translateX(-50%) translateY(0);
    }

/* ── about.html ── */
/* ── ABOUT EXTRA ── */
    .about-hero {
      background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
      padding: 64px 24px;
    }
    .about-hero-inner {
      max-width: 800px;
      margin: 0 auto;
      display: flex;
      gap: 40px;
      align-items: center;
      flex-wrap: wrap;
    }
    .about-hero-avatar {
      width: 140px;
      height: 140px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--accent), #fbbf24);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 3.5rem;
      font-weight: 900;
      color: #fff;
      flex-shrink: 0;
      box-shadow: 0 8px 32px rgba(249,115,22,.35);
    }
    .about-hero-text { flex: 1; color: #fff; }
    .about-hero-text h1 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); font-weight: 800; letter-spacing: -0.03em; margin-bottom: 10px; }
    .about-hero-text .role { font-size: 1rem; color: var(--accent); font-weight: 600; margin-bottom: 12px; }
    .about-hero-text p { font-size: 0.95rem; color: #94a3b8; line-height: 1.7; max-width: 480px; }
    .about-hero-socials { display: flex; gap: 10px; margin-top: 20px; flex-wrap: wrap; }
    .social-btn {
      display: inline-flex; align-items: center; gap: 7px;
      background: rgba(255,255,255,.08); color: #cbd5e1;
      border: 1px solid rgba(255,255,255,.12);
      text-decoration: none; font-size: 0.82rem; font-weight: 600;
      padding: 7px 14px; border-radius: 8px;
      transition: background .15s, color .15s;
    }
    .social-btn:hover { background: rgba(255,255,255,.15); color: #fff; }

    .about-body { max-width: 800px; margin: 0 auto; padding: 60px 24px 80px; }

    /* stats */
    .about-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 16px; margin-bottom: 52px; }
    .astat { background: var(--bg2); border: 1.5px solid var(--border); border-radius: 14px; padding: 22px; text-align: center; }
    .astat strong { display: block; font-size: 2rem; font-weight: 900; color: var(--accent); margin-bottom: 4px; }
    .astat span { font-size: 0.82rem; color: var(--text2); font-weight: 500; }

    /* sections */
    .about-section { margin-bottom: 48px; }
    .about-section h2 { font-size: 1.3rem; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 16px; padding-bottom: 10px; border-bottom: 2px solid var(--border); }
    .about-section p { font-size: 0.95rem; color: var(--text2); line-height: 1.8; margin-bottom: 14px; }
    .about-section p:last-child { margin-bottom: 0; }

    /* timeline */
    .timeline { display: flex; flex-direction: column; gap: 0; }
    .tl-item { display: flex; gap: 20px; padding-bottom: 28px; position: relative; }
    .tl-item:last-child { padding-bottom: 0; }
    .tl-left { display: flex; flex-direction: column; align-items: center; flex-shrink: 0; width: 40px; }
    .tl-dot { width: 14px; height: 14px; border-radius: 50%; background: var(--accent); border: 3px solid var(--bg2); box-shadow: 0 0 0 2px var(--accent); flex-shrink: 0; margin-top: 4px; }
    .tl-line { flex: 1; width: 2px; background: var(--border); margin-top: 6px; }
    .tl-item:last-child .tl-line { display: none; }
    .tl-content { flex: 1; }
    .tl-content strong { display: block; font-size: 0.95rem; font-weight: 700; margin-bottom: 2px; }
    .tl-content .tl-date { font-size: 0.78rem; color: var(--accent); font-weight: 600; margin-bottom: 6px; }
    .tl-content p { font-size: 0.88rem; color: var(--text2); line-height: 1.6; margin: 0; }

    /* skills */
    .skills-grid { display: flex; flex-wrap: wrap; gap: 8px; }
    .skill-tag { background: var(--bg2); border: 1.5px solid var(--border); color: var(--text); font-size: 0.85rem; font-weight: 600; padding: 7px 14px; border-radius: 999px; }

    /* CTA */
    .about-cta { background: linear-gradient(135deg, var(--accent) 0%, #fbbf24 100%); border-radius: 20px; padding: 48px 40px; text-align: center; margin-top: 52px; }
    .about-cta h2 { font-size: 1.6rem; font-weight: 800; color: #fff; margin-bottom: 10px; }
    .about-cta p { color: rgba(255,255,255,.85); font-size: 0.95rem; margin-bottom: 28px; }
    .about-cta-btns { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
    .btn-white { background: #fff; color: var(--accent); border: none; border-radius: 10px; padding: 13px 26px; font-size: 0.95rem; font-weight: 700; cursor: pointer; font-family: inherit; text-decoration: none; display: inline-flex; align-items: center; transition: transform .1s, box-shadow .2s; box-shadow: 0 4px 14px rgba(0,0,0,.15); }
    .btn-white:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(0,0,0,.2); }
    .btn-outline-white { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,.6); border-radius: 10px; padding: 11px 24px; font-size: 0.95rem; font-weight: 600; cursor: pointer; font-family: inherit; text-decoration: none; display: inline-flex; align-items: center; transition: background .15s; }
    .btn-outline-white:hover { background: rgba(255,255,255,.15); }

    @media (max-width: 640px) {
      .about-hero-inner { flex-direction: column; text-align: center; }
      .about-hero-socials { justify-content: center; }
      .about-cta { padding: 36px 24px; }
    }

/* ── success.html ── */
.success-wrap {
      min-height: calc(100vh - 64px);
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 40px 24px;
      background: var(--bg2);
    }
    .success-card {
      background: var(--bg);
      border: 1.5px solid var(--border);
      border-radius: 20px;
      padding: 48px 40px;
      max-width: 520px;
      width: 100%;
      text-align: center;
      box-shadow: var(--shadow-lg);
    }
    .success-icon {
      width: 72px;
      height: 72px;
      background: #dcfce7;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 2rem;
      margin: 0 auto 20px;
    }
    .success-card h1 {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--text);
      margin-bottom: 10px;
      letter-spacing: -0.02em;
    }
    .success-card .subtitulo {
      color: var(--text2);
      font-size: 0.95rem;
      margin-bottom: 32px;
      line-height: 1.6;
    }
    .curso-nombre { color: var(--accent); font-weight: 700; }

    .codigo-box {
      background: var(--bg2);
      border: 2px dashed var(--accent);
      border-radius: 14px;
      padding: 24px;
      margin-bottom: 24px;
    }
    .codigo-label {
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--text3);
      text-transform: uppercase;
      letter-spacing: 0.1em;
      margin-bottom: 10px;
    }
    .codigo-valor {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--accent);
      letter-spacing: 0.05em;
      word-break: break-all;
      margin-bottom: 12px;
    }
    .btn-copiar {
      background: var(--bg3);
      color: var(--text2);
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: 7px 16px;
      font-size: 0.85rem;
      font-weight: 600;
      cursor: pointer;
      font-family: inherit;
      transition: background 0.15s;
    }
    .btn-copiar:hover { background: var(--border); }

    .btn-udemy {
      display: block;
      background: var(--accent);
      color: #fff;
      text-decoration: none;
      border-radius: 12px;
      padding: 14px 28px;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 20px;
      transition: background 0.2s, transform 0.1s;
    }
    .btn-udemy:hover { background: var(--accent-dark); transform: translateY(-1px); }

    .instrucciones {
      text-align: left;
      background: var(--bg2);
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 18px 20px;
      font-size: 0.86rem;
      color: var(--text2);
      line-height: 1.9;
      margin-bottom: 24px;
    }
    .instrucciones strong { color: var(--text); font-weight: 700; }

    .volver {
      font-size: 0.87rem;
      color: var(--text3);
    }
    .volver a { color: var(--accent); text-decoration: none; font-weight: 600; }
    .volver a:hover { text-decoration: underline; }

/* ── curso-lambda.html ── */
/* ── CURSO HERO ── */
    .curso-hero {
      background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
      padding: 56px 24px 0;
    }
    .curso-hero-inner {
      max-width: 1100px;
      margin: 0 auto;
      display: flex;
      gap: 48px;
      align-items: flex-start;
    }
    .curso-hero-text { flex: 1; padding-bottom: 56px; color: #fff; }
    .curso-breadcrumb { font-size: 0.82rem; color: #64748b; margin-bottom: 16px; }
    .curso-breadcrumb a { color: #64748b; text-decoration: none; }
    .curso-breadcrumb a:hover { color: var(--accent); }
    .curso-cats { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 18px; }
    .curso-hero-text h1 {
      font-size: clamp(1.6rem, 3vw, 2.3rem);
      font-weight: 800;
      line-height: 1.2;
      letter-spacing: -0.025em;
      margin-bottom: 18px;
    }
    .curso-desc { font-size: 1rem; color: #94a3b8; line-height: 1.7; margin-bottom: 24px; max-width: 540px; }
    .curso-meta { display: flex; flex-wrap: wrap; gap: 16px; }
    .meta-item { font-size: 0.85rem; color: #cbd5e1; font-weight: 500; }

    /* ── FLOATING CARD ── */
    .curso-card {
      width: 320px;
      flex-shrink: 0;
      background: #fff;
      border-radius: 16px;
      overflow: hidden;
      box-shadow: 0 20px 60px rgba(0,0,0,.35);
      margin-bottom: -56px;
      position: sticky;
      top: 80px;
    }
    .curso-card img { width: 100%; display: block; }
    .curso-card-body { padding: 22px; }
    .precio { display: flex; align-items: baseline; gap: 8px; margin-bottom: 4px; }
    .precio-actual { font-size: 1.9rem; font-weight: 900; color: var(--text); }
    .precio-original { font-size: 0.9rem; color: var(--text3); text-decoration: line-through; }
    .descuento { font-size: 0.75rem; font-weight: 700; background: #dcfce7; color: #16a34a; padding: 2px 8px; border-radius: 999px; }
    .card-aviso { font-size: 0.78rem; color: var(--accent); font-weight: 600; margin-bottom: 14px; }
    .pago-opciones { display: flex; flex-direction: column; gap: 9px; }
    .pago-divider { display: flex; align-items: center; gap: 8px; color: var(--text3); font-size: 0.74rem; }
    .pago-divider::before, .pago-divider::after { content: ''; flex: 1; height: 1px; background: var(--border); }
    .btn-stripe { width: 100%; padding: 12px; background: var(--text); color: #fff; border: none; border-radius: 10px; font-size: 0.9rem; font-weight: 700; cursor: pointer; font-family: inherit; transition: opacity .2s, transform .1s; }
    .btn-stripe:hover { opacity: .85; transform: translateY(-1px); }
    .btn-stripe:disabled { opacity: .5; cursor: not-allowed; transform: none; }
    .card-includes { list-style: none; margin-top: 14px; display: flex; flex-direction: column; gap: 5px; }
    .card-includes li { font-size: 0.8rem; color: var(--text2); }

    /* ── CONTENT AREA ── */
    .curso-content {
      max-width: 1100px;
      margin: 0 auto;
      padding: 64px 24px 80px;
      display: flex;
      gap: 48px;
      align-items: flex-start;
    }
    .curso-main { flex: 1; min-width: 0; }
    .curso-sidebar { width: 320px; flex-shrink: 0; }
    .sidebar-sticky { position: sticky; top: 80px; background: #fff; border: 1.5px solid var(--border); border-radius: 16px; overflow: hidden; box-shadow: var(--shadow); }
    .sidebar-sticky img { width: 100%; display: block; }
    .sidebar-sticky .curso-card-body { padding: 20px; }

    .cblock { margin-bottom: 48px; }
    .cblock h2 { font-size: 1.35rem; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 20px; padding-bottom: 12px; border-bottom: 2px solid var(--border); }

    /* learn grid */
    .learn-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; list-style: none; }
    .learn-grid li { font-size: 0.88rem; color: var(--text2); background: var(--bg2); border: 1px solid var(--border); padding: 10px 14px; border-radius: 10px; }

    /* description */
    .cblock p { font-size: 0.95rem; color: var(--text2); line-height: 1.75; margin-bottom: 14px; }
    .cblock p:last-child { margin-bottom: 0; }

    /* temario */
    .temario { border: 1.5px solid var(--border); border-radius: 12px; overflow: hidden; }
    .temario-section { border-bottom: 1px solid var(--border); }
    .temario-section:last-child { border-bottom: none; }
    .temario-section summary {
      display: flex; justify-content: space-between; align-items: center;
      padding: 13px 18px; cursor: pointer; font-weight: 600; font-size: 0.9rem;
      list-style: none; background: #fff; transition: background .15s;
    }
    .temario-section summary:hover { background: var(--bg2); }
    .temario-section[open] summary { background: var(--bg2); }
    .section-count { font-size: 0.75rem; color: var(--text3); font-weight: 500; flex-shrink: 0; margin-left: 12px; }
    .temario-section ul { list-style: none; padding: 0 18px 10px; background: #fafafa; }
    .temario-section li { display: flex; align-items: center; gap: 10px; padding: 7px 0; border-bottom: 1px solid var(--border); font-size: 0.85rem; color: var(--text2); }
    .temario-section li:last-child { border-bottom: none; }
    .l-icon { color: var(--text3); font-size: 0.78rem; flex-shrink: 0; }
    .l-dur { margin-left: auto; font-size: 0.76rem; color: var(--text3); white-space: nowrap; }

    /* audience */
    .audience-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
    .audience-list li { font-size: 0.9rem; color: var(--text2); padding: 12px 16px; background: var(--bg2); border: 1px solid var(--border); border-radius: 10px; }
    .audience-list li strong { color: var(--text); }

    /* instructor */
    .instructor-block { display: flex; gap: 20px; align-items: flex-start; background: var(--bg2); border: 1.5px solid var(--border); border-radius: 14px; padding: 24px; }
    .instr-avatar { width: 68px; height: 68px; border-radius: 50%; background: linear-gradient(135deg, var(--accent), #fbbf24); display: flex; align-items: center; justify-content: center; font-size: 1.7rem; font-weight: 900; color: #fff; flex-shrink: 0; }
    .instr-info h3 { font-size: 1rem; font-weight: 800; margin-bottom: 4px; }
    .instr-info p { font-size: 0.87rem; color: var(--text2); line-height: 1.65; }
    .instr-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
    .itag { background: #fff; border: 1px solid var(--border); color: var(--text2); font-size: 0.76rem; font-weight: 600; padding: 3px 10px; border-radius: 999px; }

    /* responsive */
    @media (max-width: 900px) {
      .curso-hero-inner { flex-direction: column; }
      .curso-card { width: 100%; position: static; margin-bottom: 0; }
      .curso-hero-text { padding-bottom: 0; }
      .curso-content { flex-direction: column; }
      .curso-sidebar { width: 100%; }
      .sidebar-sticky { position: static; }
      .learn-grid { grid-template-columns: 1fr; }
    }

    /* toast */
    #toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px); background: #1e293b; color: #f1f5f9; padding: 12px 24px; border-radius: 10px; font-size: 0.9rem; font-weight: 500; opacity: 0; transition: opacity .25s, transform .25s; pointer-events: none; z-index: 999; white-space: nowrap; }
    #toast.visible { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ── curso-ec2.html ── */
.curso-hero { background: linear-gradient(135deg, #0f172a 0%, #0f2744 100%); padding: 56px 24px 0; }
    .curso-hero-inner { max-width: 1100px; margin: 0 auto; display: flex; gap: 48px; align-items: flex-start; }
    .curso-hero-text { flex: 1; padding-bottom: 56px; color: #fff; }
    .curso-breadcrumb { font-size: 0.82rem; color: #64748b; margin-bottom: 16px; }
    .curso-breadcrumb a { color: #64748b; text-decoration: none; }
    .curso-breadcrumb a:hover { color: #60a5fa; }
    .curso-cats { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 18px; }
    .curso-hero-text h1 { font-size: clamp(1.6rem, 3vw, 2.3rem); font-weight: 800; line-height: 1.2; letter-spacing: -0.025em; margin-bottom: 18px; }
    .curso-desc { font-size: 1rem; color: #94a3b8; line-height: 1.7; margin-bottom: 24px; max-width: 540px; }
    .curso-meta { display: flex; flex-wrap: wrap; gap: 16px; }
    .meta-item { font-size: 0.85rem; color: #cbd5e1; font-weight: 500; }

    .curso-card { width: 320px; flex-shrink: 0; background: #fff; border-radius: 16px; overflow: hidden; box-shadow: 0 20px 60px rgba(0,0,0,.35); margin-bottom: -56px; position: sticky; top: 80px; }
    .curso-card img { width: 100%; display: block; }
    .curso-card-body { padding: 22px; }
    .precio { display: flex; align-items: baseline; gap: 8px; margin-bottom: 4px; }
    .precio-actual { font-size: 1.9rem; font-weight: 900; color: var(--text); }
    .precio-original { font-size: 0.9rem; color: var(--text3); text-decoration: line-through; }
    .descuento { font-size: 0.75rem; font-weight: 700; background: #dcfce7; color: #16a34a; padding: 2px 8px; border-radius: 999px; }
    .card-aviso { font-size: 0.78rem; color: #3b82f6; font-weight: 600; margin-bottom: 14px; }
    .pago-opciones { display: flex; flex-direction: column; gap: 9px; }
    .pago-divider { display: flex; align-items: center; gap: 8px; color: var(--text3); font-size: 0.74rem; }
    .pago-divider::before, .pago-divider::after { content: ''; flex: 1; height: 1px; background: var(--border); }
    .btn-stripe { width: 100%; padding: 12px; background: var(--text); color: #fff; border: none; border-radius: 10px; font-size: 0.9rem; font-weight: 700; cursor: pointer; font-family: inherit; transition: opacity .2s, transform .1s; }
    .btn-stripe:hover { opacity: .85; transform: translateY(-1px); }
    .btn-stripe:disabled { opacity: .5; cursor: not-allowed; transform: none; }
    .card-includes { list-style: none; margin-top: 14px; display: flex; flex-direction: column; gap: 5px; }
    .card-includes li { font-size: 0.8rem; color: var(--text2); }

    .curso-content { max-width: 1100px; margin: 0 auto; padding: 64px 24px 80px; display: flex; gap: 48px; align-items: flex-start; }
    .curso-main { flex: 1; min-width: 0; }
    .curso-sidebar { width: 320px; flex-shrink: 0; }
    .sidebar-sticky { position: sticky; top: 80px; background: #fff; border: 1.5px solid var(--border); border-radius: 16px; overflow: hidden; box-shadow: var(--shadow); }
    .sidebar-sticky img { width: 100%; display: block; }

    .cblock { margin-bottom: 48px; }
    .cblock h2 { font-size: 1.35rem; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 20px; padding-bottom: 12px; border-bottom: 2px solid var(--border); }
    .cblock p { font-size: 0.95rem; color: var(--text2); line-height: 1.75; margin-bottom: 14px; }
    .cblock p:last-child { margin-bottom: 0; }

    .learn-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; list-style: none; }
    .learn-grid li { font-size: 0.88rem; color: var(--text2); background: var(--bg2); border: 1px solid var(--border); padding: 10px 14px; border-radius: 10px; }

    .requirements-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }
    .requirements-list li { font-size: 0.9rem; color: var(--text2); padding-left: 20px; position: relative; }
    .requirements-list li::before { content: '→'; position: absolute; left: 0; color: #3b82f6; font-weight: 700; }

    .temario { border: 1.5px solid var(--border); border-radius: 12px; overflow: hidden; }
    .temario-section { border-bottom: 1px solid var(--border); }
    .temario-section:last-child { border-bottom: none; }
    .temario-section summary { display: flex; justify-content: space-between; align-items: center; padding: 13px 18px; cursor: pointer; font-weight: 600; font-size: 0.9rem; list-style: none; background: #fff; transition: background .15s; }
    .temario-section summary:hover { background: var(--bg2); }
    .temario-section[open] summary { background: var(--bg2); }
    .section-count { font-size: 0.75rem; color: var(--text3); font-weight: 500; flex-shrink: 0; margin-left: 12px; }
    .temario-section ul { list-style: none; padding: 0 18px 10px; background: #fafafa; }
    .temario-section li { display: flex; align-items: center; gap: 10px; padding: 7px 0; border-bottom: 1px solid var(--border); font-size: 0.85rem; color: var(--text2); }
    .temario-section li:last-child { border-bottom: none; }
    .l-icon { color: var(--text3); font-size: 0.78rem; flex-shrink: 0; }
    .l-dur { margin-left: auto; font-size: 0.76rem; color: var(--text3); white-space: nowrap; }

    .audience-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
    .audience-list li { font-size: 0.9rem; color: var(--text2); padding: 12px 16px; background: var(--bg2); border: 1px solid var(--border); border-radius: 10px; }
    .audience-list li strong { color: var(--text); }

    .includes-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }
    .includes-list li { font-size: 0.9rem; color: var(--text2); }

    .instructor-block { display: flex; gap: 20px; align-items: flex-start; background: var(--bg2); border: 1.5px solid var(--border); border-radius: 14px; padding: 24px; }
    .instr-avatar { width: 68px; height: 68px; border-radius: 50%; background: linear-gradient(135deg, #3b82f6, #60a5fa); display: flex; align-items: center; justify-content: center; font-size: 1.7rem; font-weight: 900; color: #fff; flex-shrink: 0; }
    .instr-info h3 { font-size: 1rem; font-weight: 800; margin-bottom: 4px; }
    .instr-info p { font-size: 0.87rem; color: var(--text2); line-height: 1.65; }
    .instr-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
    .itag { background: #fff; border: 1px solid var(--border); color: var(--text2); font-size: 0.76rem; font-weight: 600; padding: 3px 10px; border-radius: 999px; }

    @media (max-width: 900px) {
      .curso-hero-inner { flex-direction: column; }
      .curso-card { width: 100%; position: static; margin-bottom: 0; }
      .curso-hero-text { padding-bottom: 0; }
      .curso-content { flex-direction: column; }
      .curso-sidebar { width: 100%; }
      .sidebar-sticky { position: static; }
      .learn-grid { grid-template-columns: 1fr; }
    }

    #toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px); background: #1e293b; color: #f1f5f9; padding: 12px 24px; border-radius: 10px; font-size: 0.9rem; font-weight: 500; opacity: 0; transition: opacity .25s, transform .25s; pointer-events: none; z-index: 999; white-space: nowrap; }
    #toast.visible { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ── curso-terraform.html ── */
.curso-hero { background: linear-gradient(135deg, #1a0533 0%, #0d1117 100%); padding: 56px 24px 0; }
    .curso-hero-inner { max-width: 1100px; margin: 0 auto; display: flex; gap: 48px; align-items: flex-start; }
    .curso-hero-text { flex: 1; padding-bottom: 56px; color: #fff; }
    .curso-breadcrumb { font-size: 0.82rem; color: #64748b; margin-bottom: 16px; }
    .curso-breadcrumb a { color: #64748b; text-decoration: none; }
    .curso-breadcrumb a:hover { color: #a855f7; }
    .curso-cats { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 18px; }
    .curso-hero-text h1 { font-size: clamp(1.6rem, 3vw, 2.3rem); font-weight: 800; line-height: 1.2; letter-spacing: -0.025em; margin-bottom: 18px; }
    .curso-desc { font-size: 1rem; color: #94a3b8; line-height: 1.7; margin-bottom: 24px; max-width: 540px; }
    .curso-meta { display: flex; flex-wrap: wrap; gap: 16px; }
    .meta-item { font-size: 0.85rem; color: #cbd5e1; font-weight: 500; }
    .rating-row { display: flex; align-items: center; gap: 8px; margin-bottom: 20px; }
    .stars { color: #fbbf24; font-size: 1rem; letter-spacing: 1px; }
    .rating-num { color: #fbbf24; font-weight: 700; font-size: 0.95rem; }
    .rating-count { color: #94a3b8; font-size: 0.85rem; }

    .curso-card { width: 320px; flex-shrink: 0; background: #fff; border-radius: 16px; overflow: hidden; box-shadow: 0 20px 60px rgba(0,0,0,.35); margin-bottom: -56px; position: sticky; top: 80px; }
    .curso-card img { width: 100%; display: block; }
    .curso-card-body { padding: 22px; }
    .precio { display: flex; align-items: baseline; gap: 8px; margin-bottom: 4px; }
    .precio-actual { font-size: 1.9rem; font-weight: 900; color: var(--text); }
    .precio-original { font-size: 0.9rem; color: var(--text3); text-decoration: line-through; }
    .descuento { font-size: 0.75rem; font-weight: 700; background: #dcfce7; color: #16a34a; padding: 2px 8px; border-radius: 999px; }
    .card-aviso { font-size: 0.78rem; color: #a855f7; font-weight: 600; margin-bottom: 14px; }
    .pago-opciones { display: flex; flex-direction: column; gap: 9px; }
    .pago-divider { display: flex; align-items: center; gap: 8px; color: var(--text3); font-size: 0.74rem; }
    .pago-divider::before, .pago-divider::after { content: ''; flex: 1; height: 1px; background: var(--border); }
    .btn-stripe { width: 100%; padding: 12px; background: var(--text); color: #fff; border: none; border-radius: 10px; font-size: 0.9rem; font-weight: 700; cursor: pointer; font-family: inherit; transition: opacity .2s, transform .1s; }
    .btn-stripe:hover { opacity: .85; transform: translateY(-1px); }
    .btn-stripe:disabled { opacity: .5; cursor: not-allowed; transform: none; }
    .card-includes { list-style: none; margin-top: 14px; display: flex; flex-direction: column; gap: 5px; }
    .card-includes li { font-size: 0.8rem; color: var(--text2); }

    .curso-content { max-width: 1100px; margin: 0 auto; padding: 64px 24px 80px; display: flex; gap: 48px; align-items: flex-start; }
    .curso-main { flex: 1; min-width: 0; }
    .curso-sidebar { width: 320px; flex-shrink: 0; }
    .sidebar-sticky { position: sticky; top: 80px; background: #fff; border: 1.5px solid var(--border); border-radius: 16px; overflow: hidden; box-shadow: var(--shadow); }
    .sidebar-sticky img { width: 100%; display: block; }

    .cblock { margin-bottom: 48px; }
    .cblock h2 { font-size: 1.35rem; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 20px; padding-bottom: 12px; border-bottom: 2px solid var(--border); }
    .cblock p { font-size: 0.95rem; color: var(--text2); line-height: 1.75; margin-bottom: 14px; }
    .cblock p:last-child { margin-bottom: 0; }

    .learn-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; list-style: none; }
    .learn-grid li { font-size: 0.88rem; color: var(--text2); background: var(--bg2); border: 1px solid var(--border); padding: 10px 14px; border-radius: 10px; }

    .requirements-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }
    .requirements-list li { font-size: 0.9rem; color: var(--text2); padding-left: 20px; position: relative; }
    .requirements-list li::before { content: '→'; position: absolute; left: 0; color: #a855f7; font-weight: 700; }

    .includes-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }
    .includes-list li { font-size: 0.9rem; color: var(--text2); }

    .temario { border: 1.5px solid var(--border); border-radius: 12px; overflow: hidden; }
    .temario-section { border-bottom: 1px solid var(--border); }
    .temario-section:last-child { border-bottom: none; }
    .temario-section summary { display: flex; justify-content: space-between; align-items: center; padding: 13px 18px; cursor: pointer; font-weight: 600; font-size: 0.9rem; list-style: none; background: #fff; transition: background .15s; }
    .temario-section summary:hover { background: var(--bg2); }
    .temario-section[open] summary { background: var(--bg2); }
    .section-count { font-size: 0.75rem; color: var(--text3); font-weight: 500; flex-shrink: 0; margin-left: 12px; }
    .temario-section ul { list-style: none; padding: 0 18px 10px; background: #fafafa; }
    .temario-section li { display: flex; align-items: center; gap: 10px; padding: 7px 0; border-bottom: 1px solid var(--border); font-size: 0.85rem; color: var(--text2); }
    .temario-section li:last-child { border-bottom: none; }
    .l-icon { color: var(--text3); font-size: 0.78rem; flex-shrink: 0; }
    .l-dur { margin-left: auto; font-size: 0.76rem; color: var(--text3); white-space: nowrap; }

    .reviews { display: flex; flex-direction: column; gap: 16px; }
    .review-card { background: var(--bg2); border: 1px solid var(--border); border-radius: 12px; padding: 16px 18px; }
    .review-header { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
    .review-avatar { width: 36px; height: 36px; border-radius: 50%; background: linear-gradient(135deg, #7B42BC, #a855f7); display: flex; align-items: center; justify-content: center; font-size: 0.9rem; font-weight: 700; color: #fff; flex-shrink: 0; }
    .review-name { font-size: 0.88rem; font-weight: 700; }
    .review-date { font-size: 0.75rem; color: var(--text3); margin-left: auto; }
    .review-stars { color: #fbbf24; font-size: 0.82rem; margin-bottom: 6px; }
    .review-text { font-size: 0.87rem; color: var(--text2); line-height: 1.6; }

    .audience-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
    .audience-list li { font-size: 0.9rem; color: var(--text2); padding: 12px 16px; background: var(--bg2); border: 1px solid var(--border); border-radius: 10px; }
    .audience-list li strong { color: var(--text); }

    .instructor-block { display: flex; gap: 20px; align-items: flex-start; background: var(--bg2); border: 1.5px solid var(--border); border-radius: 14px; padding: 24px; }
    .instr-avatar { width: 68px; height: 68px; border-radius: 50%; background: linear-gradient(135deg, #7B42BC, #a855f7); display: flex; align-items: center; justify-content: center; font-size: 1.7rem; font-weight: 900; color: #fff; flex-shrink: 0; }
    .instr-info h3 { font-size: 1rem; font-weight: 800; margin-bottom: 4px; }
    .instr-info p { font-size: 0.87rem; color: var(--text2); line-height: 1.65; }
    .instr-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
    .itag { background: #fff; border: 1px solid var(--border); color: var(--text2); font-size: 0.76rem; font-weight: 600; padding: 3px 10px; border-radius: 999px; }

    @media (max-width: 900px) {
      .curso-hero-inner { flex-direction: column; }
      .curso-card { width: 100%; position: static; margin-bottom: 0; }
      .curso-hero-text { padding-bottom: 0; }
      .curso-content { flex-direction: column; }
      .curso-sidebar { width: 100%; }
      .sidebar-sticky { position: static; }
      .learn-grid { grid-template-columns: 1fr; }
    }

    #toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px); background: #1e293b; color: #f1f5f9; padding: 12px 24px; border-radius: 10px; font-size: 0.9rem; font-weight: 500; opacity: 0; transition: opacity .25s, transform .25s; pointer-events: none; z-index: 999; white-space: nowrap; }
    #toast.visible { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ── Clases utilitarias (reemplazo de style inline) ── */
.card-img {
  width: 100%;
  border-radius: 8px;
  display: block;
  margin-bottom: 14px;
}
.card-title-link {
  color: inherit;
  text-decoration: none;
}