/* =============================================================================
   VARIABLES
   ============================================================================= */
:root {
  /* Colores institucionales */
  --navy:        #001e3c;
  --navy-mid:    #002d57;
  --blue-ua:     #203888;   /* azul del logo Austral */
  --orange:      #f07c10;   /* naranja FI institucional */
  --orange-lt:   #f8a040;
  --orange-dim:  rgba(240, 124, 16, 0.10);

  /* Carreras */
  --ind:  #c05000;
  --inf:  #0066b3;
  --bio:  #6b22a8;

  /* Texto y fondos */
  --texto:      #1a1a1a;
  --suave:      #555555;
  --muy-suave:  #999999;
  --fondo:      #ffffff;
  --fondo-gris: #f5f5f2;
  --borde:      #e0e0e0;

  /* Tipografía */
  --font-h: "DM Serif Display", Georgia, serif;
  --font-b: "Inter", system-ui, sans-serif;

  /* Layout */
  --max:  1040px;
  --r:    6px;
  --r-lg: 10px;
  --tr:   0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

/* =============================================================================
   RESET Y BASE
   ============================================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html  { scroll-behavior: smooth; }
body  {
  font-family: var(--font-b);
  background:  var(--fondo);
  color:       var(--texto);
  font-size:   15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* =============================================================================
   HEADER / HERO
   ============================================================================= */
.hero {
  background:  var(--navy-mid);
  border-top:  4px solid var(--orange);
  position:    relative;
  overflow:    hidden;
}

/* textura sutil */
.hero::after {
  content:    "";
  position:   absolute;
  inset:      0;
  pointer-events: none;
  background-image: radial-gradient(rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 26px 26px;
}

.hero-inner {
  position:   relative;
  z-index:    1;
  max-width:  var(--max);
  margin:     0 auto;
  padding:    2rem 2rem 2.5rem;
  display:    grid;
  grid-template-columns: 1fr;
  align-items: center;
  gap:        2rem;
}

.hero-header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 3.5rem;
  gap: 2rem;
  flex-wrap: wrap;
  width: 100%;
}

/* Logo */
.hero-logo {
  display:     flex;
  align-items: center;
  gap:         1.2rem;
}

.logo-austral {
  height: 44px;
  width:  auto;
  opacity: 1;
  mix-blend-mode: normal;
  filter: brightness(0) invert(1);
}

.hero-faculty {
  font-size:      0.75rem;
  font-weight:    600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color:          rgba(255,255,255,0.85);
  border-left:    2px solid var(--orange);
  padding-left:   1.2rem;
  line-height:    1.2;
}

.hero-cta {
  display:         inline-flex;
  align-items:     center;
  background:      var(--orange);
  color:           #fff;
  text-decoration: none;
  font-size:       0.75rem;
  font-weight:     600;
  padding:         0.6rem 1.2rem;
  border-radius:   50px;
  transition:      background var(--tr), transform var(--tr);
  box-shadow:      0 4px 12px rgba(240, 124, 16, 0.2);
}

.hero-cta:hover {
  background:      var(--orange-lt);
  transform:       translateY(-1px);
  color:           #fff;
}

.hero h1 {
  font-family:   var(--font-h);
  font-size:     clamp(2rem, 4.5vw, 3rem);
  font-weight:   400;
  line-height:   1.1;
  color:         #fff;
  margin-bottom: 0.65rem;
}

.hero h1 em {
  color:      var(--orange-lt);
  font-style: italic;
}

.hero-bajada {
  font-size:   0.9rem;
  font-weight: 300;
  color:       rgba(255,255,255,0.55);
  max-width:   440px;
  line-height: 1.7;
  margin-bottom: 1.25rem;
}


.hero-stats {
  display:        flex;
  flex-direction: row;
  justify-content: flex-start;
  gap:            2.5rem;
  border-left:    none;
  padding-left:   0;
  border-top:     1px solid rgba(255,255,255,0.12);
  padding-top:    1.5rem;
  min-width:      auto;
}

.stat-num   { font-family: var(--font-h); font-size: 1.9rem; color: var(--orange-lt); line-height: 1; }
.stat-label { font-size: 0.65rem; font-weight: 500; color: rgba(255,255,255,0.40);
              text-transform: uppercase; letter-spacing: 0.10em; margin-top: 0.2rem; }

/* Variante liviana (Compact) */
.hero-compact {
  min-height: auto;
  padding: 48px 24px 40px;
}

.hero-compact .hero-inner {
  align-items: center;
  gap: 40px;
}

.hero-compact .hero-header-top {
  margin-bottom: 4rem;
}

.hero-compact h1 {
  max-width: 760px;
  font-size: clamp(42px, 7vw, 82px);
  line-height: 0.95;
}

.hero-compact .hero-bajada {
  max-width: 560px;
  margin-top: 20px;
  font-size: 18px;
  color: rgba(255,255,255,0.70);
}

.hero-stats-compact {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  min-width: 180px;
  border-left: 1px solid rgba(255,255,255,0.12);
  padding-left: 24px;
}

.hero-stats-compact > div {
  padding: 10px 0;
}

.hero-stats-compact .stat-num {
  font-size: 32px;
}

.hero-stats-compact .stat-label {
  font-size: 13px;
}

/* =============================================================================
   SECCIONES GENÉRICAS
   ============================================================================= */
.sec      { padding: 3.5rem 2rem; }
.sec-gris { background: var(--fondo-gris); }

.inner    { max-width: var(--max); margin: 0 auto; }

.sec-titulo {
  font-family:   var(--font-h);
  font-size:     clamp(1.4rem, 3vw, 1.9rem);
  font-weight:   400;
  margin-bottom: 0.3rem;
}

.sec-sub {
  font-size:     0.85rem;
  font-weight:   300;
  font-style:    italic;
  color:         var(--suave);
  margin-bottom: 1.75rem;
}

.sep { border: none; border-top: 1px solid var(--borde); margin: 2rem 0; }

/* =============================================================================
   CORE CURRICULUM (BACHELOR)
   ============================================================================= */
.bachelor-label {
  display:        inline-flex;
  align-items:    center;
  gap:            0.4rem;
  background:     var(--orange-dim);
  border:         1px solid rgba(240,124,16,0.22);
  color:          var(--orange);
  border-radius:  4px;
  font-size:      0.66rem;
  font-weight:    600;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  padding:        0.2rem 0.65rem;
  margin-bottom:  1rem;
}

.bachelor-highlight {
  background:   var(--orange-dim);
  border-left:  3px solid var(--orange);
  border-radius: 0 var(--r) var(--r) 0;
  padding:      0.9rem 1.1rem;
  font-size:    0.88rem;
  font-weight:  300;
  line-height:  1.65;
  color:        var(--texto);
  margin-bottom: 1.75rem;
}

.bachelor-nota {
  font-size:  0.75rem;
  font-weight: 300;
  font-style: italic;
  color:      var(--muy-suave);
  margin-top: 1.5rem;
  padding-bottom: 0.5rem;
}

/* =============================================================================
   AÑOS (bloques de materias)
   ============================================================================= */
.anio-bloque { margin-bottom: 0.5rem; }

.anio-titulo {
  display:       flex;
  align-items:   baseline;
  gap:           0.85rem;
  margin-bottom: 1rem;
}

.anio-num {
  font-family: var(--font-h);
  font-size:   1rem;
  font-weight: 400;
}

.anio-sub {
  font-size:  0.8rem;
  font-weight: 300;
  font-style: italic;
  color:      var(--suave);
}

/* color del número por sección */
.t-comun      .anio-num { color: var(--blue-ua); }
.t-industrial .anio-num { color: var(--ind); }
.t-informatica .anio-num { color: var(--inf); }
.t-biomedica  .anio-num { color: var(--bio); }

/* =============================================================================
   GRILLA DE TARJETAS
   ============================================================================= */
.grilla {
  display:               grid;
  grid-template-columns: repeat(auto-fill, minmax(195px, 1fr));
  gap:                   10px;
}

.card {
  background:    var(--fondo);
  border:        1px solid var(--borde);
  border-top:    3px solid var(--borde);
  border-radius: var(--r);
  padding:       0.8rem 0.95rem;
  transition:    box-shadow var(--tr), transform var(--tr);
}

.card:hover {
  box-shadow: 0 4px 14px rgba(0,0,0,0.08);
  transform:  translateY(-2px);
}

/* Card destacada — electivas de 5.º año, ancho completo, acento naranja */
.card-destacada {
  grid-column:    1 / -1;
  border-top-color: var(--orange) !important;
  background:     #fffaf5;
}

.card-destacada .card-nombre { color: var(--orange); }

.card-nombre {
  font-size:     0.83rem;
  font-weight:   600;
  line-height:   1.3;
  margin-bottom: 0.28rem;
}

.card-desc {
  font-size:   0.73rem;
  font-weight: 300;
  color:       var(--suave);
  line-height: 1.5;
}

/* borde superior de tarjeta por sección */
.t-comun      .card { border-top-color: var(--blue-ua); }
.t-industrial .card { border-top-color: var(--ind); }
.t-informatica .card { border-top-color: var(--inf); }
.t-biomedica  .card { border-top-color: var(--bio); }

/* =============================================================================
   PILLS
   ============================================================================= */
.pill {
  display:        inline-flex;
  align-items:    center;
  font-size:      0.62rem;
  font-weight:    600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding:        0.13rem 0.5rem;
  border-radius:  3px;
  border:         1px solid;
  margin-top:     0.5rem;
}
.pill-hum  { color: #9b1c1c; border-color: #f5c6c6; background: #fdf2f2; }
.pill-elec { color: #1a6e30; border-color: #b8e0c4; background: #f0faf3; }
.pill-lab  { color: #7a5c00; border-color: #f0de94; background: #fdfaea; }
.pill-pps  { color: #004080; border-color: #a8c8f0; background: #eaf3fc; }
.pill-pfi  { color: #4a1080; border-color: #c8a8f0; background: #f4eafc; }

/* =============================================================================
   CARDS DE CARRERA — expandibles
   ============================================================================= */
.carreras-lista {
  display:        flex;
  flex-direction: column;
  gap:            1rem;
}

.carrera-card {
  border:        1.5px solid var(--borde);
  border-radius: var(--r-lg);
  overflow:      hidden;
  transition:    box-shadow var(--tr);
}

.carrera-card.abierta {
  box-shadow: 0 6px 24px rgba(0,0,0,0.09);
}

/* color izquierdo por carrera */
.carrera-card[data-carrera="industrial"]  { border-left: 5px solid var(--ind); }
.carrera-card[data-carrera="informatica"] { border-left: 5px solid var(--inf); }
.carrera-card[data-carrera="biomedica"]   { border-left: 5px solid var(--bio); }

.carrera-header {
  display:     flex;
  align-items: flex-start;
  justify-content: space-between;
  gap:         1.5rem;
  padding:     1.35rem 1.5rem;
  cursor:      pointer;
  user-select: none;
  transition:  background var(--tr);
}

.carrera-card[data-carrera="industrial"]  .carrera-header { background: #fdf3eb; }
.carrera-card[data-carrera="informatica"] .carrera-header { background: #edf3fc; }
.carrera-card[data-carrera="biomedica"]   .carrera-header { background: #f5edfb; }

.carrera-card.abierta .carrera-header {
  border-bottom: 1px solid var(--borde);
}

.carrera-header-left {
  display:     flex;
  align-items: flex-start;
  gap:         1rem;
}

.carrera-icono { font-size: 1.9rem; line-height: 1; flex-shrink: 0; margin-top: 2px; }

.carrera-nombre {
  font-family:   var(--font-h);
  font-size:     1.1rem;
  font-weight:   400;
  margin-bottom: 0.2rem;
}

.carrera-card[data-carrera="industrial"]  .carrera-nombre { color: var(--ind); }
.carrera-card[data-carrera="informatica"] .carrera-nombre { color: var(--inf); }
.carrera-card[data-carrera="biomedica"]   .carrera-nombre { color: var(--bio); }

.carrera-desc {
  font-size:   0.78rem;
  font-weight: 300;
  color:       var(--suave);
  line-height: 1.5;
  margin-bottom: 0.65rem;
}

.carrera-chips { display: flex; flex-wrap: wrap; gap: 0.35rem; }

.chip {
  font-size:   0.63rem;
  font-weight: 500;
  padding:     0.15rem 0.55rem;
  border-radius: 99px;
  border:      1px solid var(--borde);
  background:  var(--fondo);
  color:       var(--suave);
}

.carrera-toggle {
  display:     flex;
  align-items: center;
  gap:         0.3rem;
  font-size:   0.72rem;
  font-weight: 500;
  color:       var(--muy-suave);
  white-space: nowrap;
  flex-shrink: 0;
  transition:  color var(--tr);
  padding-top: 4px;
}

.carrera-card.abierta .carrera-toggle { color: var(--orange); }

.toggle-icon {
  display:    inline-block;
  transition: transform var(--tr);
}
.carrera-card.abierta .toggle-icon { transform: rotate(180deg); }

/* Cuerpo expandible */
.carrera-body {
  max-height:  0;
  overflow:    hidden;
  transition:  max-height 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

.carrera-body-inner { padding: 1.5rem 1.5rem 2rem; }

/* =============================================================================
   TRACKS dentro de carrera
   ============================================================================= */
.tracks-bloque { margin-top: 2rem; padding-top: 1.5rem; border-top: 1px solid var(--borde); }

.tracks-titulo {
  font-family:   var(--font-h);
  font-size:     1rem;
  font-weight:   400;
  margin-bottom: 0.25rem;
}

.t-industrial .tracks-titulo  { color: var(--ind); }
.t-informatica .tracks-titulo { color: var(--inf); }
.t-biomedica  .tracks-titulo  { color: var(--bio); }

.tracks-sub {
  font-size:     0.76rem;
  font-weight:   300;
  font-style:    italic;
  color:         var(--suave);
  margin-bottom: 1rem;
}

.tracks-grilla {
  display:               grid;
  grid-template-columns: repeat(auto-fill, minmax(185px, 1fr));
  gap:                   10px;
}

.track-card {
  border:        1px solid var(--borde);
  border-top:    2px solid var(--borde);
  border-radius: var(--r);
  padding:       0.85rem 0.95rem;
  background:    var(--fondo);
}

.track-icono  { font-size: 1.15rem; margin-bottom: 0.35rem; display: block; }
.track-titulo { font-size: 0.82rem; font-weight: 600; margin-bottom: 0.4rem; }

.track-temas { list-style: none; }
.track-temas li {
  font-size:   0.71rem;
  font-weight: 300;
  color:       var(--suave);
  line-height: 1.55;
  display:     flex;
  gap:         0.3rem;
}
.track-temas li::before { content: "–"; color: var(--borde); flex-shrink: 0; }

.track-badge {
  display:    inline-block;
  font-size:  0.61rem;
  font-weight: 500;
  padding:    0.12rem 0.45rem;
  border-radius: 3px;
  margin-top: 0.5rem;
  background: var(--fondo-gris);
  color:      var(--suave);
  border:     1px solid var(--borde);
}

/* colores de borde superior de track — Industrial */
.t-industrial .track-card.track-energia  { border-top-color: #ef9f27; } .t-industrial .track-card.track-energia  .track-titulo { color: #7a4800; }
.t-industrial .track-card.track-meca     { border-top-color: #8b7eee; } .t-industrial .track-card.track-meca     .track-titulo { color: #342880; }
.t-industrial .track-card.track-datos    { border-top-color: #3d8ee8; } .t-industrial .track-card.track-datos    .track-titulo { color: #0a3e80; }
.t-industrial .track-card.track-sust     { border-top-color: #5aa830; } .t-industrial .track-card.track-sust     .track-titulo { color: #204010; }
.t-industrial .track-card.track-ai       { border-top-color: #e05080; } .t-industrial .track-card.track-ai       .track-titulo { color: #701030; }
.t-industrial .track-card.track-diseno   { border-top-color: #e07030; } .t-industrial .track-card.track-diseno   .track-titulo { color: #702010; }
.t-industrial .track-card.track-mgmt     { border-top-color: #20a880; } .t-industrial .track-card.track-mgmt     .track-titulo { color: #084838; }
.t-industrial .track-card.track-supply   { border-top-color: #909088; } .t-industrial .track-card.track-supply   .track-titulo { color: #404038; }

/* Informática */
.t-informatica .track-card.track-ia      { border-top-color: #e91e63; } .t-informatica .track-card.track-ia      .track-titulo { color: #6b0028; }
.t-informatica .track-card.track-games   { border-top-color: #ff5722; } .t-informatica .track-card.track-games   .track-titulo { color: #7a2000; }
.t-informatica .track-card.track-cyber   { border-top-color: #2196f3; } .t-informatica .track-card.track-cyber   .track-titulo { color: #003880; }
.t-informatica .track-card.track-agro    { border-top-color: #4caf50; } .t-informatica .track-card.track-agro    .track-titulo { color: #1a4c1c; }
.t-informatica .track-card.track-robo    { border-top-color: #9c27b0; } .t-informatica .track-card.track-robo    .track-titulo { color: #44006a; }
.t-informatica .track-card.track-datos   { border-top-color: #3f51b5; } .t-informatica .track-card.track-datos   .track-titulo { color: #18206a; }
.t-informatica .track-card.track-energia { border-top-color: #fbc02d; } .t-informatica .track-card.track-energia .track-titulo { color: #6a4800; }
.t-informatica .track-card.track-mgmt    { border-top-color: #795548; } .t-informatica .track-card.track-mgmt    .track-titulo { color: #3a2018; }

/* Biomédica */
.t-biomedica .track-card.track-bioinfo   { border-top-color: #8b5cf6; } .t-biomedica .track-card.track-bioinfo   .track-titulo { color: #3c1c80; }
.t-biomedica .track-card.track-datos     { border-top-color: #3d8ee8; } .t-biomedica .track-card.track-datos     .track-titulo { color: #0a3e80; }
.t-biomedica .track-card.track-radio     { border-top-color: #e05080; } .t-biomedica .track-card.track-radio     .track-titulo { color: #701030; }
.t-biomedica .track-card.track-global    { border-top-color: #20b870; } .t-biomedica .track-card.track-global    .track-titulo { color: #084830; }

/* =============================================================================
   PERFILES FLUIDOS — sección con fondo gris suave, NO navy
   ============================================================================= */
#section-perfiles { background: var(--fondo-gris); }

.pf-header { margin-bottom: 2rem; }

.pf-sub {
  font-size:   0.88rem;
  font-weight: 300;
  color:       var(--suave);
  max-width:   580px;
  line-height: 1.7;
}

.perfiles-grid {
  display:               grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap:                   1rem;
}

.perfil-card {
  background:    var(--fondo);
  border:        1.5px solid var(--borde);
  border-radius: var(--r-lg);
  padding:       1.25rem 1.25rem 1rem;
}

/* Card de doble titulación — borde naranja destacado */
.perfil-doble {
  border-color: var(--orange);
  background:   #fffaf5;
  grid-column:  span 2;   /* ocupa 2 columnas cuando hay espacio */
}

@media (max-width: 640px) { .perfil-doble { grid-column: span 1; } }

.perfil-emoji  { font-size: 1.5rem; margin-bottom: 0.5rem; display: block; }

.perfil-nombre {
  font-family:   var(--font-h);
  font-size:     0.97rem;
  color:         var(--texto);
  margin-bottom: 0.2rem;
  line-height:   1.25;
}

.perfil-tagline {
  font-size:     0.75rem;
  font-weight:   300;
  font-style:    italic;
  color:         var(--suave);
  margin-bottom: 0.9rem;
  line-height:   1.5;
}

.perfil-camino {
  display:     flex;
  align-items: center;
  flex-wrap:   wrap;
  gap:         0.3rem;
  margin-bottom: 0.75rem;
}

.perfil-bloque {
  font-size:   0.66rem;
  font-weight: 600;
  padding:     0.18rem 0.55rem;
  border-radius: 4px;
  letter-spacing: 0.02em;
}

.pb-comun { background: #e8ecf5; color: #1a2e80; border: 1px solid #c0caec; }
.pb-ind   { background: #fdeee4; color: #8a3000; border: 1px solid #f0c090; }
.pb-inf   { background: #e4f0fc; color: #003880; border: 1px solid #90c0f0; }
.pb-bio   { background: #f0e8fa; color: #4a1080; border: 1px solid #c090e8; }
.pb-track { background: #fef0e0; color: #804000; border: 1px solid #f0c070; }
.pb-arrow { color: var(--muy-suave); font-size: 0.75rem; }

/* Materias factorizadas en doble titulación */
.perfil-equiv {
  margin-bottom: 0.7rem;
  padding:       0.6rem 0.75rem;
  background:    var(--orange-dim);
  border-radius: var(--r);
  font-size:     0.7rem;
}

.equiv-label {
  display:    block;
  font-weight: 500;
  color:       var(--orange);
  margin-bottom: 0.4rem;
  font-size:   0.66rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.equiv-chip {
  display:       inline-block;
  font-size:     0.67rem;
  font-weight:   400;
  padding:       0.1rem 0.45rem;
  border-radius: 3px;
  background:    rgba(240,124,16,0.12);
  border:        1px solid rgba(240,124,16,0.25);
  color:         #7a4000;
  margin-right:  0.3rem;
  margin-bottom: 0.3rem;
}

.perfil-salida {
  font-size:   0.73rem;
  font-weight: 300;
  color:       var(--suave);
  border-top:  1px solid var(--borde);
  padding-top: 0.65rem;
  line-height: 1.5;
}

.perfil-salida strong { color: var(--texto); font-weight: 500; }

.pf-nota {
  font-size:  0.75rem;
  font-weight: 300;
  font-style: italic;
  color:      var(--muy-suave);
  margin-top: 1.5rem;
  text-align: center;
}

/* =============================================================================
   FOOTER
   ============================================================================= */
.footer {
  background:  var(--fondo);
  border-top:  1px solid var(--blue-ua);
  color:       var(--suave);
  text-align:  center;
  padding:     3rem 1.5rem;
  font-size:   0.72rem;
  font-weight: 400;
  letter-spacing: 0.03em;
}

.footer-logo {
  margin-bottom: 1.2rem;
}

.footer .logo-fi {
  height: 40px;
  width:  auto;
  opacity: 1;
  filter:  none;
}

.footer a {
  color:           var(--blue-ua);
  text-decoration: none;
  font-weight:     500;
  transition:      color var(--tr);
}
.footer a:hover { color: var(--orange); }

/* =============================================================================
   RESPONSIVE
   ============================================================================= */
@media (max-width: 700px) {
  .hero-inner              { grid-template-columns: 1fr; }
  .hero-stats, .hero-stats-compact { 
                             display: flex;
                             flex-direction: row; flex-wrap: wrap; gap: 1.5rem;
                             border-left: none; padding-left: 0;
                             border-top: 1px solid rgba(255,255,255,0.12);
                             padding-top: 1.2rem; min-width: auto; }
  .hero-stats-compact > div { padding: 0; }
  .carrera-header          { flex-direction: column; }
  .carrera-toggle          { align-self: flex-end; }
  .hero-header-top         { flex-direction: column; align-items: flex-start; }
  .hero-cta                { margin-left: auto; }
}