/* ================================================================
   ISEE WEB PLATFORM — style.css (UNIFICADO)
   Syne + JetBrains Mono · Hacker/Dev Dark Aesthetic
   Architect: ISEE Frontend Team
   ================================================================ */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=JetBrains+Mono:wght@300;400;500;700&family=Inter:wght@300;400;500;600;700&display=swap');

/* ================================================================
   01. RESET & GLOBALES
   ================================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-mono);
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
ul, ol { list-style: none; }
::selection { background: var(--clr-purple); color: var(--clr-white); }

/* Scrollbar */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--clr-bg); }
::-webkit-scrollbar-thumb { background: var(--clr-purple-dark); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--clr-purple); }

/* ================================================================
   02. VARIABLES
   ================================================================ */
:root {
  /* ── Brand Colors ────────────────────────────────────── */
  --clr-bg:             #030712;
  --clr-bg-2:           #080f1e;
  --clr-bg-3:           #0d1526;
  --clr-surface:        #0f172a;
  --clr-surface-2:      #1e293b;
  --clr-border:         rgba(59, 130, 246, 0.12);
  --clr-border-h:       rgba(139, 92, 246, 0.4);

  --clr-blue:           #3b82f6;
  --clr-blue-light:     #60a5fa;
  --clr-blue-dark:      #1d4ed8;
  --clr-purple:         #8b5cf6;
  --clr-purple-light:   #a78bfa;
  --clr-purple-dark:    #6d28d9;

  --clr-text:           #f3f4f6;
  --clr-text-2:         #9ca3af;
  --clr-text-3:         #4b5563;
  --clr-white:          #ffffff;

  --clr-whatsapp:       #25D366;

  --clr-green-accent:   #4ade80;
  --clr-green-glow:     rgba(74, 222, 128, 0.6);
  --clr-amber-accent:   #fbbf24;
  --clr-red-accent:     #f87171;

  /* ── Cursos-specific Colors ──────────────────────────── */
  --clr-cursos-bg-card:    #0f1623;
  --clr-cursos-border:     rgba(139, 92, 246, 0.15);
  --clr-cursos-border-h:   rgba(139, 92, 246, 0.5);
  --clr-cursos-text:       #f1f5f9;
  --clr-cursos-text-2:     #94a3b8;
  --clr-cursos-text-3:     #475569;

  /* ── Gradients ───────────────────────────────────────── */
  --grad-brand:         linear-gradient(135deg, var(--clr-purple), var(--clr-blue));
  --grad-hero:          radial-gradient(ellipse 120% 80% at 50% -10%, rgba(139, 92, 246, .18) 0%, transparent 60%),
                        radial-gradient(ellipse 80% 60% at 90% 80%, rgba(59, 130, 246, .12) 0%, transparent 50%);
  --grad-card:          linear-gradient(145deg, #0d1526, #080f1e);
  --grad-cursos-hero:   linear-gradient(135deg, #1a0533 0%, #030712 45%, #030712 55%, #051230 100%);
  --grad-cursos-card:   linear-gradient(145deg, #0f1623, #0a0f1e);

  /* ── Typography ──────────────────────────────────────── */
  --font-display:       'Syne', system-ui, sans-serif;
  --font-mono:          'JetBrains Mono', 'Fira Code', monospace;
  --font-body:          'Inter', system-ui, sans-serif;

  /* ── Layout ──────────────────────────────────────────── */
  --max-w:              1200px;
  --gutter:             clamp(1.25rem, 5vw, 2.5rem);
  --section-gap:        clamp(5rem, 10vw, 8rem);

  /* ── Motion ──────────────────────────────────────────── */
  --ease:               cubic-bezier(.4, 0, .2, 1);
  --ease-spring:        cubic-bezier(.34, 1.56, .64, 1);
  --dur:                .3s;
  --dur-slow:           .6s;

  /* ── Shadows ─────────────────────────────────────────── */
  --shadow-blue:        0 0 40px rgba(59, 130, 246, .2);
  --shadow-purple:      0 0 40px rgba(139, 92, 246, .2);
  --shadow-card:        0 4px 48px rgba(0, 0, 0, .5);
  --shadow-card-hover:  0 8px 60px rgba(139, 92, 246, 0.2);
  --shadow-glow-purple: 0 0 30px rgba(139, 92, 246, 0.3);
  --shadow-wa:          0 4px 24px rgba(37, 211, 102, .4);
  --shadow-wa-hover:    0 8px 36px rgba(37, 211, 102, .55);

  /* ── Radii ───────────────────────────────────────────── */
  --radius-full:        9999px;
  --radius-lg:          1.5rem;
}

/* ================================================================
   03. COMPONENTES BASE (Botones, Etiquetas, Reveal)
   ================================================================ */

/* ── Layout Helpers ──────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: var(--section-gap); }
.section--alt { background: var(--clr-bg-2); }

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--clr-purple-light);
  margin-bottom: 1.25rem;
}
.section-eyebrow::before {
  content: '';
  width: 20px; height: 1.5px;
  background: var(--grad-brand);
  border-radius: 2px;
}

.section-heading {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 3.8vw, 2.9rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.02em;
  margin-bottom: 1rem;
}
.section-heading .accent {
  background: var(--grad-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-lead {
  font-size: .95rem;
  color: var(--clr-text-2);
  max-width: 46ch;
  line-height: 1.7;
}

hr.divider {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--clr-border), transparent);
}

/* ── Carrusel ────────────────────────── */

/* ================================================================
   QUOTE TICKER COMPONENT
   ================================================================ */
.quote-ticker-section {
  padding-block: 2rem;
  background: var(--clr-bg-2);
  border-bottom: 1px solid var(--clr-border);
  overflow: hidden;
  position: relative;
}

/* Efecto de difuminado en los bordes para que no se corte abruptamente */
.quote-ticker-section::before,
.quote-ticker-section::after {
  content: '';
  position: absolute;
  top: 0;
  width: 15%;
  height: 100%;
  z-index: 2;
  pointer-events: none;
}
.quote-ticker-section::before {
  left: 0;
  background: linear-gradient(to right, var(--clr-bg-2), transparent);
}
.quote-ticker-section::after {
  right: 0;
  background: linear-gradient(to left, var(--clr-bg-2), transparent);
}

.ticker-wrapper {
  display: flex;
  width: max-content;
}

.ticker-track {
  display: flex;
  gap: 3rem;
  animation: scrollTicker 30s linear infinite;
}

/* Pausar la animación si el usuario pasa el cursor */
.ticker-track:hover {
  animation-play-state: paused;
}

.ticker-content {
  display: flex;
  gap: 3rem;
}

.quote-item {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-width: 300px;
  opacity: 0.8;
  transition: opacity var(--dur) var(--ease);
}

.quote-item:hover {
  opacity: 1;
}

.quote-item p {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--clr-text);
  font-style: italic;
  margin: 0;
}

.quote-item span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--clr-purple-light);
  letter-spacing: 0.05em;
}

@keyframes scrollTicker {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ── Scroll Reveal (Unified) ────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.reveal-d1 { transition-delay: .1s; }
.reveal-d2 { transition-delay: .2s; }
.reveal-d3 { transition-delay: .3s; }
.reveal-d4 { transition-delay: .4s; }
/* Cursos-specific delay aliases */
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }

/* ── Buttons ─────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .8rem 1.75rem;
  font-family: var(--font-mono);
  font-size: .85rem;
  font-weight: 700;
  border-radius: 6px;
  transition: transform var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease),
              background var(--dur) var(--ease);
  position: relative;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--grad-brand);
  color: var(--clr-white);
  box-shadow: var(--shadow-purple);
}
.btn-primary:hover { box-shadow: 0 0 56px rgba(139, 92, 246, .45); }

.btn-ghost {
  background: transparent;
  color: var(--clr-blue-light);
  border: 1.5px solid var(--clr-blue);
}
.btn-ghost:hover {
  background: rgba(59, 130, 246, .08);
  box-shadow: var(--shadow-blue);
}

.btn-sm { padding: .6rem 1.25rem; font-size: .78rem; }

/* ── Tag / Badge ─────────────────────────────────────── */
.tag {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .25rem .75rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.tag-blue   { background: rgba(59, 130, 246, .12);  color: var(--clr-blue-light); }
.tag-purple { background: rgba(139, 92, 246, .12); color: var(--clr-purple-light); }
.tag-green  { background: rgba(34, 197, 94, .12);  color: var(--clr-green-accent); }
.tag-amber  { background: rgba(245, 158, 11, .12); color: var(--clr-amber-accent); }

/* ================================================================
   04. LAYOUT COMPARTIDO (Header, Navbar, Footer, WhatsApp)
   ================================================================ */

/* ── Navbar ──────────────────────────────────────────── */
.navbar {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 900;
  padding-block: 1.1rem;
  transition: background var(--dur-slow) var(--ease),
              padding var(--dur) var(--ease),
              border-color var(--dur-slow) var(--ease);
  border-bottom: 1px solid transparent;
}
.navbar.scrolled {
  background: rgba(3, 7, 18, .88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding-block: .75rem;
  border-color: var(--clr-border);
}
.navbar__inner {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.navbar__logo { display: flex; align-items: center; flex-shrink: 0; }
.navbar__logo img { height: 100px; width: auto; }

.navbar__links {
  display: flex;
  align-items: center;
  gap: 2rem;
  margin-left: auto;
}
.navbar__links a {
  font-family: var(--font-mono);
  font-size: .8rem;
  font-weight: 500;
  color: var(--clr-text-2);
  letter-spacing: .04em;
  transition: color var(--dur) var(--ease);
  position: relative;
}
.navbar__links a::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0;
  width: 0; height: 1.5px;
  background: var(--grad-brand);
  border-radius: 2px;
  transition: width var(--dur) var(--ease);
}
.navbar__links a:hover { color: var(--clr-text); }
.navbar__links a:hover::after { width: 100%; }

.navbar__cta { margin-left: 1rem; }

.navbar__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  margin-left: auto;
  padding: 4px;
}
.navbar__burger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--clr-text-2);
  border-radius: 2px;
  transition: var(--dur) var(--ease);
}

/* Mobile Nav */
.navbar__mobile {
  display: none;
  flex-direction: column;
  gap: 1.5rem;
  padding: 2rem var(--gutter);
  position: fixed;
  inset: 0;
  top: 64px;
  background: rgba(3, 7, 18, .97);
  backdrop-filter: blur(24px);
  z-index: 850;
}
.navbar__mobile.open { display: flex; }
.navbar__mobile a {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--clr-text-2);
  transition: color var(--dur) var(--ease);
}
.navbar__mobile a:hover { color: var(--clr-purple-light); }

/* ── Footer ──────────────────────────────────────────── */
.footer {
  padding-block: 3.5rem 2rem;
  border-top: 1px solid var(--clr-border);
}
.footer__inner {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 2.5rem;
}
.footer__brand-name {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-block: .5rem .75rem;
}
.footer__tagline {
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--clr-text-3);
  line-height: 1.7;
  margin-bottom: 1.25rem;
}
.footer__social {
  display: flex;
  gap: .65rem;
}
.social-btn {
  width: 34px; height: 34px;
  border: 1px solid var(--clr-border);
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-text-3);
  transition: border-color var(--dur) var(--ease),
              color var(--dur) var(--ease),
              background var(--dur) var(--ease);
}
.social-btn:hover {
  border-color: var(--clr-purple);
  color: var(--clr-purple-light);
  background: rgba(139, 92, 246, .1);
}
.footer__col h4 {
  font-family: var(--font-mono);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--clr-text);
  margin-bottom: 1rem;
}
.footer__col ul { display: flex; flex-direction: column; gap: .6rem; }
.footer__col a {
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--clr-text-3);
  transition: color var(--dur) var(--ease);
}
.footer__col a:hover { color: var(--clr-purple-light); }
.footer__bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--clr-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer__copy {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--clr-text-3);
}
.footer__legal { display: flex; gap: 1.25rem; }
.footer__legal a {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--clr-text-3);
  transition: color var(--dur) var(--ease);
}
.footer__legal a:hover { color: var(--clr-purple-light); }

/* ── WhatsApp Floating Button ────────────────────────── */
.wa-btn {
  position: fixed;
  bottom: 1.75rem;
  right: 1.75rem;
  z-index: 800;
  width: 54px; height: 54px;
  background: var(--clr-whatsapp);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-white);
  box-shadow: var(--shadow-wa);
  transition: transform var(--dur) var(--ease-spring),
              box-shadow var(--dur) var(--ease);
  animation: waEntrance .6s var(--ease-spring) 1.5s both;
}
.wa-btn:hover {
  transform: scale(1.1) translateY(-2px);
  box-shadow: var(--shadow-wa-hover);
}
.wa-btn:active { transform: scale(.96); }
.wa-tooltip {
  position: absolute;
  right: calc(100% + .75rem);
  white-space: nowrap;
  padding: .45rem .85rem;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: 5px;
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 700;
  color: var(--clr-text);
  opacity: 0;
  pointer-events: none;
  transform: translateX(6px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.wa-btn:hover .wa-tooltip {
  opacity: 1;
  transform: translateX(0);
}

/* ================================================================
   05. VISTA: INDEX
   ================================================================ */

/* ── Hero Section ────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: var(--clr-bg);
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-hero);
  pointer-events: none;
}

/* Dot-grid overlay */
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(139, 92, 246, .08) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black 20%, transparent 100%);
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 2;
  padding-block: 8rem 6rem;
  max-width: 760px;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  padding: .35rem 1rem;
  background: rgba(139, 92, 246, .1);
  border: 1px solid rgba(139, 92, 246, .25);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--clr-purple-light);
  margin-bottom: 2rem;
  animation: fadeDown .7s var(--ease) both;
}
.hero__eyebrow .live-dot {
  width: 6px; height: 6px;
  background: var(--clr-green-accent);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--clr-green-accent);
  animation: pulseDot 2s ease infinite;
}

.hero__h1 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 5.2rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -.035em;
  margin-bottom: 1.5rem;
  animation: fadeUp .8s var(--ease) .1s both;
}
.hero__h1 .line-accent {
  background: var(--grad-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
/* Blinking cursor on last word */
.hero__h1 .cursor::after {
  content: '_';
  display: inline;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: blink 1.1s step-end infinite;
}

.hero__sub {
  font-family: var(--font-mono);
  font-size: clamp(.88rem, 1.6vw, 1.05rem);
  color: var(--clr-text-2);
  max-width: 52ch;
  line-height: 1.75;
  margin-bottom: 2.75rem;
  animation: fadeUp .8s var(--ease) .2s both;
}

.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  animation: fadeUp .8s var(--ease) .3s both;
}

.hero__scroll {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-mono);
  font-size: .65rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--clr-text-3);
  animation: fadeIn 1.2s var(--ease) 1s both;
}
.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--clr-purple), transparent);
  animation: scrollPulse 2s ease infinite;
}

/* ── Stats Bar ───────────────────────────────────────── */
.stats-bar {
  padding-block: 2.5rem;
  background: var(--clr-bg-2);
  border-block: 1px solid var(--clr-border);
}
.stats-bar__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  text-align: center;
}
.stat__num {
  
  font-size: 2.2rem;
  font-weight: 800;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: .35rem;
}
.stat__label {
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--clr-text-3);
}

/* ── Academia Section ────────────────────────────────── */
.academia {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.course-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.course-card {
  background: var(--grad-card);
  border: 1px solid var(--clr-border);
  border-radius: 8px;
  overflow: hidden;
  transition: border-color var(--dur) var(--ease),
              transform var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}
.course-card:hover {
  border-color: var(--clr-border-h);
  transform: translateY(-4px);
  box-shadow: var(--shadow-purple);
}
.course-card--featured {
  grid-column: span 2;
}
.course-card__thumb {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  display: block;
}
.course-card__body {
  padding: 1.1rem;
}
.course-card__title {
  font-family: var(--font-display);
  font-size: .95rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-block: .5rem .35rem;
  line-height: 1.3;
}
.course-card__meta {
  font-size: .72rem;
  color: var(--clr-text-3);
  font-family: var(--font-mono);
}

.academia__ctas {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

/* Feature list */
.feature-list {
  display: flex;
  flex-direction: column;
  gap: .85rem;
  margin-top: 1.75rem;
}
.feature-list__item {
  display: flex;
  align-items: flex-start;
  gap: .85rem;
  padding: .9rem 1rem;
  background: var(--clr-bg-3);
  border: 1px solid var(--clr-border);
  border-radius: 6px;
  font-size: .85rem;
  color: var(--clr-text-2);
  transition: border-color var(--dur) var(--ease);
}
.feature-list__item:hover { border-color: var(--clr-border-h); }
.feature-list__icon {
  color: var(--clr-purple-light);
  flex-shrink: 0;
  margin-top: 1px;
}
.feature-list__text strong {
  display: block;
  font-family: var(--font-display);
  font-size: .9rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: .2rem;
}

/* ── Agency / B2B Section ────────────────────────────── */
.agency {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.services-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--clr-border);
  border: 1px solid var(--clr-border);
  border-radius: 8px;
  overflow: hidden;
}
.service-card {
  padding: 1.75rem 1.5rem;
  background: var(--clr-bg-3);
  transition: background var(--dur) var(--ease);
}
.service-card:hover { background: var(--clr-bg-2); }
.service-card__icon {
  color: var(--clr-blue-light);
  margin-bottom: .85rem;
}
.service-card__title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: .4rem;
}
.service-card__desc {
  font-size: .8rem;
  color: var(--clr-text-3);
  line-height: 1.6;
}

.agency__trust {
  display: flex;
  align-items: center;
  gap: .6rem;
  margin-top: 1.75rem;
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--clr-text-3);
}
.trust-dot {
  width: 7px; height: 7px;
  background: var(--clr-green-accent);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--clr-green-glow);
}

/* ── Portfolio Section ───────────────────────────────── */
.portfolio__header {
  text-align: center;
  max-width: 580px;
  margin-inline: auto;
  margin-bottom: 4rem;
}
.portfolio__header .section-eyebrow { justify-content: center; }

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.portfolio-item {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--clr-border);
  aspect-ratio: 16/10;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease),
              transform var(--dur) var(--ease);
}
.portfolio-item:hover {
  border-color: var(--clr-border-h);
  transform: translateY(-5px);
}
.portfolio-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s var(--ease);
}
.portfolio-item:hover img { transform: scale(1.04); }

.portfolio-item__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(3, 7, 18, .92) 0%, transparent 55%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.25rem;
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
}
.portfolio-item:hover .portfolio-item__overlay { opacity: 1; }

.portfolio-item__cat {
  font-family: var(--font-mono);
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--clr-purple-light);
  margin-bottom: .3rem;
}
.portfolio-item__name {
  font-family: var(--font-display);
  font-size: .95rem;
  font-weight: 700;
  color: var(--clr-text);
}

/* ── Advisor / Chat Section ──────────────────────────── */
.advisor {
  display: grid;
  grid-template-columns: 1fr 1.35fr;
  gap: 5rem;
  align-items: center;
}

.chat-window {
  background: var(--clr-bg-3);
  border: 1px solid var(--clr-border);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow-card), 0 0 60px rgba(139, 92, 246, .08);
}
.chat-window__bar {
  padding: 1rem 1.35rem;
  background: rgba(139, 92, 246, .07);
  border-bottom: 1px solid var(--clr-border);
  display: flex;
  align-items: center;
  gap: .85rem;
}
.chat-window__bar-dots {
  display: flex;
  gap: 5px;
}
.chat-window__bar-dots span {
  width: 9px; height: 9px;
  border-radius: 50%;
}
.chat-window__bar-dots span:nth-child(1) { background: #ff5f57; }
.chat-window__bar-dots span:nth-child(2) { background: #febc2e; }
.chat-window__bar-dots span:nth-child(3) { background: #28c840; }
.chat-window__bar-title {
  font-family: var(--font-mono);
  font-size: .75rem;
  font-weight: 700;
  color: var(--clr-text-2);
  margin-left: .25rem;
}
.chat-window__online {
  display: flex;
  align-items: center;
  gap: .35rem;
  font-family: var(--font-mono);
  font-size: .65rem;
  color: var(--clr-green-accent);
  margin-left: auto;
}
.chat-window__online-dot {
  width: 5px; height: 5px;
  background: var(--clr-green-accent);
  border-radius: 50%;
  box-shadow: 0 0 6px rgba(74, 222, 128, .7);
  animation: pulseDot 2s ease infinite;
}

.chat-window__messages {
  padding: 1.35rem;
  min-height: 280px;
  max-height: 340px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: .9rem;
  scrollbar-width: thin;
  scrollbar-color: var(--clr-purple-dark) transparent;
}

.msg {
  display: flex;
  gap: .65rem;
  animation: msgIn .3s var(--ease) both;
}
.msg--user { flex-direction: row-reverse; }
.msg__av {
  width: 28px; height: 28px;
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .65rem;
  font-weight: 700;
}
.msg--ai .msg__av   { background: var(--grad-brand); color: var(--clr-white); }
.msg--user .msg__av { background: var(--clr-surface-2); color: var(--clr-text-2); }

.msg__bubble {
  max-width: 78%;
  padding: .7rem .95rem;
  border-radius: 7px;
  font-family: var(--font-mono);
  font-size: .8rem;
  line-height: 1.6;
}
.msg--ai   .msg__bubble { background: rgba(139, 92, 246, .1); border: 1px solid rgba(139, 92, 246, .15); border-bottom-left-radius: 2px; }
.msg--user .msg__bubble { background: rgba(59, 130, 246, .12); border: 1px solid rgba(59, 130, 246, .2); border-bottom-right-radius: 2px; }

.typing-indicator {
  display: none;
  align-items: center;
  gap: .65rem;
  padding: 0 .25rem;
}
.typing-indicator.active { display: flex; }
.typing-dots {
  display: flex;
  gap: 4px;
  background: rgba(139, 92, 246, .1);
  border: 1px solid rgba(139, 92, 246, .15);
  border-radius: 7px;
  border-bottom-left-radius: 2px;
  padding: .55rem .85rem;
}
.typing-dot {
  width: 7px; height: 7px;
  background: var(--clr-purple-light);
  border-radius: 50%;
  animation: typeBounce 1.2s ease infinite;
}
.typing-dot:nth-child(2) { animation-delay: .2s; }
.typing-dot:nth-child(3) { animation-delay: .4s; }

.chat-window__input-area {
  padding: 1rem 1.35rem;
  border-top: 1px solid var(--clr-border);
  background: rgba(255, 255, 255, .02);
}
.chat-input-row {
  display: flex;
  gap: .65rem;
  align-items: flex-end;
}
#chat-input {
  flex: 1;
  background: rgba(255, 255, 255, .04);
  border: 1px solid var(--clr-border);
  border-radius: 6px;
  padding: .65rem .9rem;
  color: var(--clr-text);
  font-family: var(--font-mono);
  font-size: .8rem;
  resize: none;
  min-height: 42px;
  max-height: 110px;
  transition: border-color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
  line-height: 1.5;
}
#chat-input::placeholder { color: var(--clr-text-3); }
#chat-input:focus {
  outline: none;
  border-color: var(--clr-purple);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, .12);
}
#chat-send-btn {
  width: 42px; height: 42px;
  border-radius: 6px;
  background: var(--grad-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--dur) var(--ease-spring),
              box-shadow var(--dur) var(--ease);
  box-shadow: var(--shadow-purple);
  color: var(--clr-white);
}
#chat-send-btn:hover { transform: scale(1.08); box-shadow: 0 0 28px rgba(139, 92, 246, .5); }
#chat-send-btn:active { transform: scale(.95); }
#chat-send-btn:disabled { opacity: .45; cursor: not-allowed; transform: none; }

.chat-window__disclaimer {
  text-align: center;
  padding: .55rem;
  font-family: var(--font-mono);
  font-size: .65rem;
  color: var(--clr-text-3);
}

/* ================================================================
   06. VISTA: CURSOS
   ================================================================ */

/* ── Page Hero (Cursos) ──────────────────────────────── */
.cursos-hero {
  padding: 10rem 0 5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cursos-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-cursos-hero);
}
.cursos-hero__content {
  position: relative;
  z-index: 1;
}

.cursos-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--clr-purple-light);
  margin-bottom: 1rem;
}
.cursos-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--clr-cursos-text);
  margin-bottom: 1rem;
}
.cursos-title .highlight {
  background: var(--grad-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.cursos-description {
  font-size: 1.1rem;
  color: var(--clr-cursos-text-2);
  max-width: 55ch;
  line-height: 1.7;
}

/* ── Courses Catalog ─────────────────────────────────── */
.cursos-section {
  padding: var(--section-gap) 0;
}

/* Filter buttons — CRITICAL: .filter-btn .active data-category preserved */
.cursos-filter {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
  justify-content: center;
}
.filter-btn {
  padding: 0.55rem 1.25rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  border: 1.5px solid var(--clr-cursos-border);
  color: var(--clr-cursos-text-2);
  background: transparent;
  transition: 0.3s ease;
}
.filter-btn:hover,
.filter-btn.active {
  border-color: var(--clr-purple);
  color: var(--clr-purple-light);
  background: rgba(139, 92, 246, 0.1);
}

/* Courses Grid */
.cursos-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

/* ── Cursos Card (namespaced to avoid collision with index .course-card) ── */
.cursos-card {
  background: var(--grad-cursos-card);
  border: 1px solid var(--clr-cursos-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: 0.3s ease;
  display: flex;
  flex-direction: column;
}
.cursos-card:hover {
  border-color: var(--clr-cursos-border-h);
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}
/* Contenedor de la imagen del curso */
.cursos-card__thumbnail {
  height: 160px; /* Mantiene la altura fija que tenías en el diseño base */
  position: relative;
  overflow: hidden;
  background: var(--clr-bg-3); /* Un color de fondo base mientras carga la imagen */
}

/* Control absoluto sobre la imagen renderizada */
.cursos-card__thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover; /* Fuerza a la imagen a llenar el espacio sin distorsionarse */
  object-position: center;
  display: block;
  transition: transform var(--dur) var(--ease);
}


/* Neutralizador para el wrapper de enlaces de las tarjetas */
.course-link-wrapper {
  display: block;
  text-decoration: none !important;
  color: inherit !important;
  transition: transform var(--dur) var(--ease);
}

.course-link-wrapper:focus-visible {
  outline: 2px solid var(--clr-purple-light);
  outline-offset: 4px;
  border-radius: var(--radius-lg);
}
/* Opcional: Si quieres que la imagen haga un ligero zoom al pasar el ratón (Hover) */
.cursos-card:hover .cursos-card__thumbnail img {
  transform: scale(1.05);
}

.cursos-card__body {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.cursos-card__level {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}
.level-beginner     { background: rgba(34, 197, 94, 0.12);  color: var(--clr-green-accent); }
.level-intermediate { background: rgba(245, 158, 11, 0.12); color: var(--clr-amber-accent); }
.level-advanced     { background: rgba(239, 68, 68, 0.12);  color: var(--clr-red-accent); }

.cursos-card__title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--clr-cursos-text);
  margin-bottom: 0.5rem;
}
.cursos-card__desc {
  font-size: 0.85rem;
  color: var(--clr-cursos-text-2);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 1.25rem;
}
.cursos-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid var(--clr-cursos-border);
}
.cursos-card__price {

  font-weight: 800;
  font-size: 1.5rem;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.cursos-card__meta {
  display: flex;
  gap: 0.75rem;
  font-size: 0.78rem;
  color: var(--clr-cursos-text-3);
}

/* ================================================================
   07. KEYFRAMES
   ================================================================ */
@keyframes fadeDown    { from { opacity: 0; transform: translateY(-16px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeUp      { from { opacity: 0; transform: translateY(24px);  } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeIn      { from { opacity: 0; } to { opacity: 1; } }
@keyframes blink       { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }
@keyframes pulseDot    { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: .5; transform: scale(.8); } }
@keyframes scrollPulse { 0%, 100% { opacity: .4; transform: scaleY(1); } 50% { opacity: 1; transform: scaleY(1.1); } }
@keyframes typeBounce  { 0%, 60%, 100% { transform: translateY(0); opacity: .4; } 30% { transform: translateY(-6px); opacity: 1; } }
@keyframes msgIn       { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
@keyframes waEntrance  { from { opacity: 0; transform: scale(.5) translateY(20px); } to { opacity: 1; transform: scale(1) translateY(0); } }

/* ================================================================
   08. RESPONSIVE
   ================================================================ */
@media (max-width: 1024px) {
  /* Index */
  .academia, .agency, .advisor { grid-template-columns: 1fr; gap: 3rem; }
  .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-bar__grid { grid-template-columns: repeat(2, 1fr); }
  /* Cursos */
  .cursos-grid { grid-template-columns: repeat(2, 1fr); }
  /* Shared */
  .footer__inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  /* Shared */
  .navbar__links { display: none; }
  .navbar__cta   { display: none; }
  .navbar__burger { display: flex; }
  .footer__inner  { grid-template-columns: 1fr; gap: 2rem; }
  .footer__bottom { flex-direction: column; text-align: center; }

  /* Index */
  .hero__h1 { font-size: clamp(2.2rem, 8vw, 3.2rem); }
  .hero__ctas { flex-direction: column; }
  .hero__ctas .btn { width: 100%; justify-content: center; }
  .course-grid { grid-template-columns: 1fr; }
  .course-card--featured { grid-column: span 1; }
  .services-grid { grid-template-columns: 1fr; }
  .portfolio-grid { grid-template-columns: 1fr; }

  /* Cursos */
  .cursos-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .stats-bar__grid { grid-template-columns: repeat(2, 1fr); }
  .wa-btn { bottom: 1.25rem; right: 1.25rem; }
}