/* ================================================================
   ACADEMIA DIGITAL AR — Estilos principales
   Colorido · Motivador · EdTech Argentina
================================================================ */

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

:root {
  --primary:    #f97316;
  --primary-dark: #ea580c;
  --secondary:  #3b82f6;
  --accent:     #10b981;
  --violet:     #8b5cf6;
  --cyan:       #06b6d4;
  --red:        #ef4444;
  --text:       #1e293b;
  --text-muted: #64748b;
  --bg:         #ffffff;
  --bg-light:   #f8fafc;
  --border:     #e2e8f0;
  --shadow-sm:  0 1px 3px rgba(0,0,0,.08);
  --shadow-md:  0 4px 20px rgba(0,0,0,.1);
  --shadow-lg:  0 10px 40px rgba(0,0,0,.12);
  --radius:     12px;
  --radius-lg:  20px;
  --transition: all .25s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Open Sans', sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
  line-height: 1.25;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 50px;
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  font-size: .9rem;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 15px rgba(249,115,22,.35);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(249,115,22,.45);
}

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

.btn-outline-primary {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
  padding: 14px 32px;
  font-size: 1rem;
}
.btn-outline-primary:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

.btn-course {
  width: 100%;
  justify-content: center;
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
  padding: 10px;
  border-radius: var(--radius);
  font-size: .875rem;
  margin-top: auto;
}
.btn-course:hover { background: var(--primary); color: #fff; }

.btn-white { background: #fff; color: var(--secondary); font-weight: 700; }
.btn-white:hover { background: #f1f5f9; transform: translateY(-2px); }

.btn-outline-white {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,.5);
}
.btn-outline-white:hover { border-color: #fff; background: rgba(255,255,255,.1); }

.btn-full { width: 100%; justify-content: center; padding: 14px; font-size: 1rem; }
.btn-modal { padding: 14px 32px; font-size: 1rem; }

/* ── TOP BAR ── */
.top-bar {
  background: var(--primary);
  color: #fff;
  text-align: center;
  padding: 10px 16px;
  font-size: .85rem;
  font-weight: 500;
}
.top-bar .code-badge {
  background: rgba(255,255,255,.25);
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 700;
  font-family: monospace;
  font-size: .9rem;
  letter-spacing: 1px;
}
.top-bar a { color: #fff; text-decoration: underline; margin-left: 4px; }

/* ── NAVBAR ── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: #fff;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.navbar.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,.12); }

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 32px;
  height: 68px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--primary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.1rem;
}
.logo-text {
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
}
.logo-accent { color: var(--primary); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  flex: 1;
}
.nav-links a {
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 5px;
}
.nav-links a:hover { color: var(--primary); }

.nav-cta { flex-shrink: 0; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  margin-left: auto;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ── HERO ── */
.hero {
  padding: 80px 0 60px;
  background: linear-gradient(135deg, #fffbf7 0%, #fff7f0 50%, #f0f9ff 100%);
  overflow: hidden;
}
.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #fff7ed;
  color: var(--primary);
  border: 1px solid #fed7aa;
  padding: 6px 14px;
  border-radius: 50px;
  font-size: .82rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.hero-title {
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  color: var(--text);
  margin-bottom: 20px;
}
.highlight {
  background: linear-gradient(135deg, var(--primary), #f59e0b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  max-width: 480px;
}

.hero-search { margin-bottom: 24px; }
.search-wrapper {
  display: flex;
  align-items: center;
  background: #fff;
  border: 2px solid var(--border);
  border-radius: 50px;
  padding: 6px 6px 6px 20px;
  box-shadow: var(--shadow-md);
  gap: 8px;
  transition: var(--transition);
}
.search-wrapper:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(249,115,22,.12);
}
.search-icon { color: var(--text-muted); font-size: 1rem; flex-shrink: 0; }
.search-wrapper input {
  flex: 1;
  border: none;
  outline: none;
  font-size: .9rem;
  font-family: 'Open Sans', sans-serif;
  color: var(--text);
  background: transparent;
}
.search-wrapper input::placeholder { color: #94a3b8; }
.search-btn { border-radius: 50px; padding: 10px 20px; font-size: .85rem; }

.hero-badges {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.hero-badge-item {
  display: flex;
  align-items: center;
  gap: 6px;
  background: #fff;
  border: 1px solid var(--border);
  padding: 7px 14px;
  border-radius: 50px;
  font-size: .8rem;
  font-weight: 600;
  color: var(--text-muted);
  box-shadow: var(--shadow-sm);
}
.hero-badge-item i { color: var(--accent); }

/* Hero Right */
.hero-right { position: relative; }
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.hero-thumb {
  border-radius: var(--radius-lg);
  padding: 28px;
  color: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 130px;
  font-size: .85rem;
  font-weight: 600;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  text-align: center;
}
.hero-thumb:hover { transform: translateY(-4px) scale(1.02); box-shadow: var(--shadow-lg); }
.hero-thumb i { font-size: 2rem; }

.hero-promo-card {
  display: flex;
  align-items: center;
  gap: 12px;
  background: #fff;
  border-radius: var(--radius);
  padding: 14px 18px;
  box-shadow: var(--shadow-lg);
  margin-top: 16px;
  border-left: 4px solid var(--accent);
}
.promo-avatar {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent), #059669);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.promo-text { display: flex; flex-direction: column; }
.promo-text strong { font-size: .9rem; color: var(--text); }
.promo-text span { font-size: .78rem; color: var(--text-muted); }

/* ── STATS ── */
.stats {
  padding: 60px 0;
  background: var(--text);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}
.stat-card {
  padding: 24px 16px;
  position: relative;
}
.stat-card:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 20%;
  height: 60%;
  width: 1px;
  background: rgba(255,255,255,.15);
}
.stat-icon { font-size: 2rem; margin-bottom: 8px; }
.stat-number {
  font-family: 'Poppins', sans-serif;
  font-weight: 800;
  font-size: 2.5rem;
  color: #fff;
  display: inline;
  line-height: 1;
}
.stat-suffix {
  font-family: 'Poppins', sans-serif;
  font-weight: 800;
  font-size: 2.5rem;
  color: #fff;
  display: inline;
}
.stat-label {
  font-size: .85rem;
  color: rgba(255,255,255,.6);
  margin-top: 6px;
  font-weight: 500;
}

/* ── SECTION HEADERS ── */
.section-header {
  text-align: center;
  margin-bottom: 48px;
}
.section-tag {
  display: inline-block;
  background: #fff7ed;
  color: var(--primary);
  border: 1px solid #fed7aa;
  padding: 5px 16px;
  border-radius: 50px;
  font-size: .78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  color: var(--text);
  margin-bottom: 12px;
}
.section-subtitle {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 520px;
  margin: 0 auto;
}

/* ── CATEGORIES ── */
.categories {
  padding: 80px 0;
  background: var(--bg-light);
}
.categories-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.category-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 10px;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}
.category-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
}
.cat-blue::before    { background: var(--secondary); }
.cat-orange::before  { background: var(--primary); }
.cat-purple::before  { background: var(--violet); }
.cat-green::before   { background: var(--accent); }
.cat-cyan::before    { background: var(--cyan); }
.cat-red::before     { background: var(--red); }

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.cat-blue:hover    { border-color: var(--secondary); }
.cat-orange:hover  { border-color: var(--primary); }
.cat-purple:hover  { border-color: var(--violet); }
.cat-green:hover   { border-color: var(--accent); }
.cat-cyan:hover    { border-color: var(--cyan); }
.cat-red:hover     { border-color: var(--red); }

.cat-icon {
  width: 72px;
  height: 72px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: 4px;
}
.cat-blue  .cat-icon { background: #eff6ff; color: var(--secondary); }
.cat-orange .cat-icon { background: #fff7ed; color: var(--primary); }
.cat-purple .cat-icon { background: #f5f3ff; color: var(--violet); }
.cat-green  .cat-icon { background: #f0fdf4; color: var(--accent); }
.cat-cyan   .cat-icon { background: #ecfeff; color: var(--cyan); }
.cat-red    .cat-icon { background: #fef2f2; color: var(--red); }

.category-card h3 { font-size: 1rem; font-weight: 700; color: var(--text); }
.category-card p  { font-size: .83rem; color: var(--text-muted); font-weight: 500; }

.cat-arrow {
  position: absolute;
  bottom: 14px;
  right: 18px;
  font-size: .8rem;
  color: var(--text-muted);
  opacity: 0;
  transform: translateX(-4px);
  transition: var(--transition);
}
.category-card:hover .cat-arrow { opacity: 1; transform: translateX(0); }

/* ── COURSES ── */
.courses { padding: 80px 0; background: var(--bg); }

.course-filters {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 36px;
}

.filter-search {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #fff;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 16px;
  max-width: 420px;
  transition: var(--transition);
}
.filter-search:focus-within { border-color: var(--primary); }
.filter-search i { color: var(--text-muted); }
.filter-search input {
  border: none;
  outline: none;
  font-size: .9rem;
  font-family: 'Open Sans', sans-serif;
  color: var(--text);
  flex: 1;
}

.filter-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.filter-tab {
  padding: 7px 16px;
  border-radius: 50px;
  font-size: .82rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--bg-light);
  border: 2px solid var(--border);
  transition: var(--transition);
}
.filter-tab:hover, .filter-tab.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.course-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.course-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.course-card.hidden { display: none; }

.course-thumb {
  position: relative;
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: rgba(255,255,255,.85);
}

.wishlist-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 32px;
  height: 32px;
  background: rgba(255,255,255,.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: .85rem;
  backdrop-filter: blur(4px);
  transition: var(--transition);
  border: none;
  cursor: pointer;
}
.wishlist-btn:hover, .wishlist-btn.active {
  background: #fff;
  color: #ef4444;
  transform: scale(1.1);
}
.wishlist-btn.active i { font-weight: 900; }

.course-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 8px;
}

.course-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 50px;
  font-size: .72rem;
  font-weight: 700;
  width: fit-content;
}
.badge-blue   { background: #eff6ff; color: var(--secondary); }
.badge-orange { background: #fff7ed; color: var(--primary); }
.badge-purple { background: #f5f3ff; color: var(--violet); }
.badge-green  { background: #f0fdf4; color: var(--accent); }
.badge-cyan   { background: #ecfeff; color: var(--cyan); }
.badge-red    { background: #fef2f2; color: var(--red); }

.course-title {
  font-size: .92rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.4;
}

.course-instructor {
  font-size: .78rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 5px;
}
.course-instructor i { color: var(--text-muted); }

.course-meta { display: flex; flex-direction: column; gap: 4px; }

.course-rating {
  display: flex;
  align-items: center;
  gap: 4px;
}
.stars { color: #f59e0b; font-size: .85rem; letter-spacing: -1px; }
.rating-num { font-weight: 700; font-size: .85rem; color: var(--text); }
.rating-count { font-size: .78rem; color: var(--text-muted); }

.course-info {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .78rem;
  color: var(--text-muted);
}
.course-info i { color: var(--secondary); }

.level {
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
  font-size: .72rem;
}
.level-basico    { background: #f0fdf4; color: var(--accent); }
.level-intermedio { background: #eff6ff; color: var(--secondary); }
.level-avanzado  { background: #fef2f2; color: var(--red); }

.course-price {
  display: flex;
  align-items: baseline;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: auto;
}
.price-old {
  font-size: .78rem;
  color: var(--text-muted);
  text-decoration: line-through;
}
.price-new {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text);
  font-family: 'Poppins', sans-serif;
}
.price-usd {
  font-size: .72rem;
  color: var(--text-muted);
  background: var(--bg-light);
  padding: 2px 6px;
  border-radius: 4px;
}

.no-results {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}
.no-results i { font-size: 3rem; margin-bottom: 16px; display: block; color: var(--border); }
.no-results p { font-size: 1.1rem; margin-bottom: 20px; }

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

/* ── WHY US ── */
.why-us {
  padding: 80px 0;
  background: var(--bg-light);
}
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.why-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--border);
}
.why-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.why-icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 18px;
}
.why-card h3 {
  font-size: .95rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}
.why-card p { font-size: .85rem; color: var(--text-muted); line-height: 1.6; }

/* ── INSTRUCTOR SPOTLIGHT ── */
.instructor-spotlight { padding: 80px 0; }

.instructor-card-big {
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: flex;
  gap: 40px;
  align-items: flex-start;
  border: 1px solid var(--border);
}

.instructor-avatar-big {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--secondary), var(--violet));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-family: 'Poppins', sans-serif;
  font-weight: 800;
  font-size: 2rem;
  flex-shrink: 0;
  box-shadow: var(--shadow-md);
}

.instructor-info { flex: 1; }

.instructor-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 16px;
}

.instructor-info h3 {
  font-size: 1.6rem;
  color: var(--text);
  margin-bottom: 6px;
}

.instructor-role {
  font-size: .9rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 8px;
}

.instructor-rating-big {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .9rem;
  color: var(--text-muted);
}
.instructor-rating-big .stars { font-size: 1rem; }
.instructor-rating-big strong { color: var(--text); font-size: 1rem; }

.instructor-badges { display: flex; gap: 8px; flex-wrap: wrap; }
.badge-instructor {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  border-radius: 50px;
  font-size: .78rem;
  font-weight: 700;
  background: #fff7ed;
  color: var(--primary);
  border: 1px solid #fed7aa;
}

.instructor-bio {
  font-size: .9rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}

.instructor-courses-mini {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}
.mini-course {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .85rem;
  color: var(--text-muted);
  padding: 8px 12px;
  background: #fff;
  border-radius: 8px;
  border: 1px solid var(--border);
}
.mini-course i { color: var(--secondary); width: 16px; text-align: center; }

/* ── TESTIMONIALS ── */
.testimonials { padding: 80px 0; background: var(--bg-light); }

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.testimonial-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.testimonial-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.testimonial-featured {
  border-color: var(--violet);
  box-shadow: 0 4px 24px rgba(139,92,246,.15);
}

.testimonial-top {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}
.testimonial-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
  font-size: .9rem;
  flex-shrink: 0;
}
.testimonial-top strong { display: block; font-weight: 700; font-size: .95rem; }
.testimonial-top span  { display: block; font-size: .78rem; color: var(--text-muted); margin-bottom: 4px; }
.testimonial-top .stars { font-size: .9rem; }

.testimonial-card p {
  font-size: .88rem;
  color: var(--text-muted);
  line-height: 1.7;
  flex: 1;
  font-style: italic;
}

.testimonial-course {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .78rem;
  color: var(--primary);
  font-weight: 600;
  background: #fff7ed;
  padding: 6px 12px;
  border-radius: 50px;
  width: fit-content;
}

/* ── EMPRESAS ── */
.empresas { padding: 80px 0; }
.empresas-inner {
  background: linear-gradient(135deg, #0f172a, #1e3a5f);
  border-radius: 28px;
  padding: 60px 40px;
  color: #fff;
}
.empresas-header {
  text-align: center;
  margin-bottom: 48px;
}
.section-tag-light {
  display: inline-block;
  background: rgba(255,255,255,.15);
  color: rgba(255,255,255,.9);
  padding: 5px 16px;
  border-radius: 50px;
  font-size: .78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
}
.empresas-header h2 { font-size: 2rem; margin-bottom: 12px; }
.empresas-header p { font-size: .95rem; color: rgba(255,255,255,.7); max-width: 500px; margin: 0 auto; }

.planes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.plan-card {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  transition: var(--transition);
  position: relative;
}
.plan-card:hover {
  background: rgba(255,255,255,.12);
  transform: translateY(-4px);
}
.plan-featured {
  background: rgba(59,130,246,.2);
  border-color: var(--secondary);
  transform: scale(1.03);
}
.plan-featured:hover { transform: scale(1.03) translateY(-4px); }

.plan-badge-top {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--secondary);
  color: #fff;
  padding: 4px 16px;
  border-radius: 50px;
  font-size: .75rem;
  font-weight: 700;
  white-space: nowrap;
}

.plan-icon {
  font-size: 1.8rem;
  color: rgba(255,255,255,.7);
  margin-bottom: 14px;
}
.plan-card h3 { font-size: 1.3rem; color: #fff; margin-bottom: 6px; }
.plan-users { font-size: .85rem; color: rgba(255,255,255,.6); margin-bottom: 16px; }
.plan-price {
  font-size: 1.05rem;
  color: rgba(255,255,255,.9);
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.plan-price strong { font-size: 1.3rem; font-family: 'Poppins', sans-serif; }

.plan-features {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 28px;
}
.plan-features li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .85rem;
  color: rgba(255,255,255,.8);
}
.plan-features i { color: var(--accent); width: 14px; }

/* ── INSTRUCTOR CTA ── */
.instructor-cta { padding: 80px 0; background: var(--bg-light); }
.instructor-cta-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.cta-left .section-tag { margin-bottom: 16px; }
.cta-left h2 { font-size: clamp(1.6rem, 2.5vw, 2.2rem); margin-bottom: 16px; color: var(--text); }
.cta-left p { font-size: .95rem; color: var(--text-muted); margin-bottom: 28px; line-height: 1.7; }

.cta-benefits { display: flex; flex-direction: column; gap: 12px; }
.cta-benefit {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .9rem;
  font-weight: 600;
  color: var(--text);
}
.cta-benefit i {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: #fff7ed;
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .85rem;
  flex-shrink: 0;
}

/* FORM */
.instructor-form {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
}
.instructor-form h3 {
  font-size: 1.3rem;
  margin-bottom: 24px;
  color: var(--text);
}
.form-group {
  margin-bottom: 18px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.form-group label {
  font-size: .82rem;
  font-weight: 600;
  color: var(--text);
}
.form-group input,
.form-group select {
  padding: 11px 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  font-size: .9rem;
  font-family: 'Open Sans', sans-serif;
  color: var(--text);
  background: #fff;
  outline: none;
  transition: var(--transition);
}
.form-group input:focus,
.form-group select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(249,115,22,.1); }
.form-group input.error,
.form-group select.error { border-color: var(--red); }
.form-error { font-size: .75rem; color: var(--red); min-height: 14px; }

.form-success {
  background: #f0fdf4;
  color: var(--accent);
  border: 1px solid #bbf7d0;
  border-radius: var(--radius);
  padding: 12px 16px;
  font-size: .88rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  text-align: center;
  justify-content: center;
}

/* ── FOOTER ── */
.footer {
  background: var(--text);
  color: rgba(255,255,255,.8);
  padding: 60px 0 0;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: .85rem;
  line-height: 1.7;
  color: rgba(255,255,255,.6);
  margin-bottom: 20px;
}
.footer-social { display: flex; gap: 10px; }
.footer-social a {
  width: 36px;
  height: 36px;
  background: rgba(255,255,255,.08);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,.7);
  font-size: .9rem;
  transition: var(--transition);
}
.footer-social a:hover { background: var(--primary); color: #fff; }

.footer-links h4 {
  color: #fff;
  font-size: .9rem;
  font-weight: 700;
  margin-bottom: 16px;
}
.footer-links ul { display: flex; flex-direction: column; gap: 10px; }
.footer-links a {
  font-size: .83rem;
  color: rgba(255,255,255,.55);
  transition: var(--transition);
}
.footer-links a:hover { color: var(--primary); }

.footer-payments {
  padding: 24px 0;
  border-bottom: 1px solid rgba(255,255,255,.1);
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.footer-payments p {
  font-size: .82rem;
  color: rgba(255,255,255,.5);
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}
.payment-methods { display: flex; gap: 8px; flex-wrap: wrap; }
.payment-badge {
  display: flex;
  align-items: center;
  gap: 5px;
  background: rgba(255,255,255,.08);
  padding: 5px 12px;
  border-radius: 6px;
  font-size: .78rem;
  color: rgba(255,255,255,.7);
  white-space: nowrap;
}
.payment-badge.cuotas {
  background: rgba(16,185,129,.2);
  color: #6ee7b7;
  border: 1px solid rgba(16,185,129,.3);
}

.footer-bottom {
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.footer-bottom p { font-size: .8rem; color: rgba(255,255,255,.4); }
.footer-bottom a { color: rgba(255,255,255,.6); transition: var(--transition); }
.footer-bottom a:hover { color: var(--primary); }
.footer-tagline { color: rgba(255,255,255,.5) !important; }

/* ── MODAL ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.6);
  z-index: 9000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  backdrop-filter: blur(4px);
}
.modal-overlay.active { opacity: 1; visibility: visible; }

.modal-box {
  background: #fff;
  border-radius: var(--radius-lg);
  max-width: 620px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  transform: translateY(20px) scale(.97);
  transition: var(--transition);
  box-shadow: 0 25px 60px rgba(0,0,0,.3);
}
.modal-overlay.active .modal-box { transform: translateY(0) scale(1); }

.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 1;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(0,0,0,.15);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .9rem;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}
.modal-close:hover { background: rgba(0,0,0,.3); }

.modal-thumb {
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  color: rgba(255,255,255,.8);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.modal-content { padding: 28px; }
.modal-header { margin-bottom: 16px; }
.modal-header .course-badge { margin-bottom: 8px; }
.modal-header h2 { font-size: 1.35rem; margin-bottom: 8px; color: var(--text); }
.modal-instructor { font-size: .85rem; color: var(--text-muted); margin-bottom: 8px; }
.modal-rating { display: flex; align-items: center; gap: 5px; font-size: .85rem; }

.modal-info-row {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.modal-info-row span {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: .82rem;
  color: var(--text-muted);
  background: var(--bg-light);
  padding: 5px 12px;
  border-radius: 50px;
}

.modal-desc {
  font-size: .88rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}

.modal-temario h4 {
  font-size: .92rem;
  color: var(--text);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 7px;
}
.modal-temario h4 i { color: var(--primary); }
.modal-temario ul { display: flex; flex-direction: column; gap: 6px; }
.modal-temario li {
  font-size: .82rem;
  color: var(--text-muted);
  padding: 7px 12px;
  background: var(--bg-light);
  border-radius: 6px;
  border-left: 3px solid var(--primary);
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 16px;
}
.modal-price-block { display: flex; flex-direction: column; gap: 2px; }
.modal-price-block .price-old { font-size: .85rem; }
.modal-price-block .price-new { font-size: 1.4rem; }

.modal-payment-note {
  text-align: center;
  font-size: .75rem;
  color: var(--text-muted);
  margin-top: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.modal-payment-note i { color: var(--accent); }

/* ── BACK TO TOP ── */
.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 999;
  width: 44px;
  height: 44px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  box-shadow: 0 4px 15px rgba(249,115,22,.4);
  transition: var(--transition);
  opacity: 0;
  visibility: hidden;
  border: none;
  cursor: pointer;
}
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--primary-dark); transform: translateY(-3px); }

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #f1f5f9; }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .courses-grid { grid-template-columns: repeat(3, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .hero-container { grid-template-columns: 1fr; gap: 40px; }
  .hero-right { display: none; }
  .hero { padding: 60px 0; }

  .nav-links { display: none; flex-direction: column; position: absolute; top: 68px; left: 0; right: 0; background: #fff; padding: 20px 24px; border-top: 1px solid var(--border); box-shadow: var(--shadow-md); gap: 16px; }
  .nav-links.open { display: flex; }
  .navbar { position: relative; }
  .hamburger { display: flex; }
  .nav-cta { display: none; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-card::after { display: none; }

  .categories-grid { grid-template-columns: repeat(2, 1fr); }
  .courses-grid { grid-template-columns: repeat(2, 1fr); }

  .why-grid { grid-template-columns: 1fr; }
  .instructor-card-big { flex-direction: column; align-items: center; text-align: center; padding: 28px 20px; gap: 24px; }
  .instructor-header { flex-direction: column; align-items: center; }
  .instructor-courses-mini { align-items: center; }

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

  .planes-grid { grid-template-columns: 1fr; }
  .plan-featured { transform: none; }
  .plan-featured:hover { transform: translateY(-4px); }

  .instructor-cta-inner { grid-template-columns: 1fr; gap: 40px; }
  .empresas-inner { padding: 40px 20px; }

  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-payments { flex-direction: column; align-items: flex-start; gap: 12px; }
  .footer-bottom { flex-direction: column; align-items: center; text-align: center; }

  .filter-tabs { gap: 6px; }
  .filter-tab { font-size: .78rem; padding: 6px 12px; }
}

@media (max-width: 480px) {
  .categories-grid { grid-template-columns: 1fr; }
  .courses-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .hero-title { font-size: 2rem; }
  .hero-badges { flex-direction: column; }
  .modal-footer { flex-direction: column; align-items: flex-start; }
  .empresas-inner { padding: 30px 16px; }
}