/* ═══════════════════════════════════════════════════════════════
   index.css — Home / Landing Page
   ═══════════════════════════════════════════════════════════════ */

/* ── Hero ──────────────────────────────────────────────────── */
.hero {
  min-height: calc(100vh - var(--header-h));
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 80px 0;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  animation: float-orb 8s ease-in-out infinite alternate;
}

.hero-orb-1 {
  width: 500px; height: 500px;
  top: -100px; right: -100px;
  background: radial-gradient(circle, rgba(64, 98, 187, 0.25), transparent 70%);
  animation-duration: 8s;
}

.hero-orb-2 {
  width: 350px; height: 350px;
  bottom: -80px; left: 10%;
  background: radial-gradient(circle, rgba(64, 98, 187, 0.15), transparent 70%);
  animation-duration: 11s;
  animation-direction: alternate-reverse;
}

@keyframes float-orb {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(30px, -20px) scale(1.05); }
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 64px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  margin-bottom: 20px;
}

.hero-title {
  font-size: clamp(2.6rem, 5.5vw, 4.6rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: 24px;
}

.hero-title .highlight {
  color: var(--color-primary);
  position: relative;
  display: inline-block;
}

.hero-title .highlight::after {
  content: '';
  position: absolute;
  bottom: 4px; left: 0; right: 0;
  height: 3px;
  background: var(--color-primary);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  animation: underline-grow 0.8s 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes underline-grow {
  to { transform: scaleX(1); }
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 540px;
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* ── Hero Visual ───────────────────────────────────────────── */
.hero-visual {
  position: relative;
}

.ai-card-visual {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 28px;
  box-shadow: 0 24px 64px var(--color-shadow), 0 0 0 1px var(--color-primary-dim);
  animation: float-card 6s ease-in-out infinite;
}

@keyframes float-card {
  0%, 100% { transform: translateY(0) rotate(-1deg); }
  50%       { transform: translateY(-10px) rotate(-1deg); }
}

.ai-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}

.ai-avatar {
  width: 40px; height: 40px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  /* Fondo coloreado → logo blanco */
  color: #ffffff;
}

.ai-avatar .brand-icon { width: 22px; height: auto; }

.ai-card-header-info strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
}

.ai-card-header-info span {
  font-size: 0.75rem;
  color: var(--color-success);
  font-family: var(--font-mono);
}

.ai-messages {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.ai-msg {
  padding: 10px 14px;
  border-radius: var(--radius-md);
  font-size: 0.82rem;
  line-height: 1.5;
  max-width: 85%;
  animation: msg-appear 0.4s ease forwards;
  opacity: 0;
}

.ai-msg.bot {
  background: var(--color-primary-dim);
  color: var(--color-primary);
  border-bottom-left-radius: 4px;
  align-self: flex-start;
}

.ai-msg.user {
  background: var(--color-primary);
  color: #fff;
  border-bottom-right-radius: 4px;
  align-self: flex-end;
}

@keyframes msg-appear {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.ai-msg:nth-child(1) { animation-delay: 0.5s; }
.ai-msg:nth-child(2) { animation-delay: 1s; }
.ai-msg:nth-child(3) { animation-delay: 1.5s; }
.ai-msg:nth-child(4) { animation-delay: 2s; }

.ai-card-result {
  margin-top: 16px;
  padding: 14px;
  background: var(--color-bg-subtle);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.result-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.result-career {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--color-primary);
}

.result-pct {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-success);
  margin-top: 2px;
}

/* ── Stats strip ───────────────────────────────────────────── */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-top: 56px;
}

.stat-item {
  background: var(--color-bg-card);
  padding: 28px 24px;
  text-align: center;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--color-primary);
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

/* ── How it works ──────────────────────────────────────────── */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
}

.steps-grid::before {
  content: '';
  position: absolute;
  top: 28px; left: 48px; right: 48px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
}

.step-card {
  padding: 20px;
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-num {
  width: 56px; height: 56px;
  background: var(--color-bg-card);
  border: 2px solid var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--color-primary);
  margin: 0 auto 16px;
  transition: all var(--transition);
}

.step-card:hover .step-num {
  background: var(--color-primary);
  color: #fff;
  transform: scale(1.1);
}

.step-card h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-card p {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ── Careers section ───────────────────────────────────────── */
/* Flexbox + justify-content:center garantiza que la última fila
   parcial (26 % 6 = 2 tarjetas) quede siempre centrada.
   flex: 1 0 155px / max-width:188px → ~6 por fila en desktop,
   se ajusta fluidamente a 5→4→3→2 en viewports más estrechos. */
.career-cards {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

.career-card {
  flex: 1 0 155px;
  max-width: 188px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 22px 16px;
  text-align: center;
  cursor: default;
  transition: all var(--transition);
}

.career-card:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-dim);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px var(--color-shadow);
}

.career-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  color: var(--color-primary);
}

.career-card h3 {
  font-size: 0.85rem;
  font-weight: 700;
  line-height: 1.4;
}

/* ── Tech stack ────────────────────────────────────────────── */
/* 8 elementos → exactamente 4 por fila = 2 filas perfectas.
   Sin auto-fill: ninguna tecnología queda sola en una fila inferior. */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 860px;
  margin: 0 auto;
}

.tech-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  text-align: center;
  transition: all var(--transition);
}

.tech-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px var(--color-shadow);
}

.tech-icon {
  font-size: 1.8rem;
  margin-bottom: 8px;
}

.tech-card span {
  font-size: 0.8rem;
  font-weight: 600;
  font-family: var(--font-heading);
  color: var(--color-text-muted);
}

/* ── Institution section ───────────────────────────────────── */
.institution-section {
  background: var(--color-primary-dim);
  border-radius: var(--radius-xl);
  padding: 64px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  border: 1px solid var(--color-primary);
  position: relative;
  overflow: hidden;
}

.institution-section::before {
  content: none;   /* decorativo eliminado — sustituido por elemento SVG si se requiere */
}

.institution-meta {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.institution-tag {
  padding: 8px 16px;
  background: var(--color-bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
}

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid::before { display: none; }
  .institution-section { grid-template-columns: 1fr; padding: 40px; }

  /* Carreras: max-width mayor → más espacio → sigue en ~5 por fila */
  .career-card { flex: 1 0 145px; max-width: 180px; }

  /* Tech: mantiene 4 por fila en tablet, tarjetas más compactas */
  .tech-grid { gap: 12px; }
}

@media (max-width: 680px) {
  /* Carreras: ~3 por fila */
  .career-card { flex: 1 0 140px; max-width: 200px; }

  /* Tech: 4 por fila sigue funcionando, gap reducido */
  .tech-grid { gap: 10px; }
}

@media (max-width: 600px) {
  .stats-strip { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }

  /* Carreras: 2 por fila en móvil */
  .career-card { flex: 1 0 calc(50% - 8px); max-width: none; }
}

@media (max-width: 440px) {
  /* Tech: 2 por fila en móvil muy pequeño */
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
}