/* ——— SECCIÓN INSTRUCTORES ——— */
.section-instructors {
  padding: 6rem 2rem 5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.instructors-sub {
  margin-top: 1rem;
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.38);
  line-height: 1.75;
  text-align: center;
}

/* ——— GRID ——— */
.instructors-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 3.5rem;
  justify-items: center;
}

/* ——— CARD BASE ——— */
.instructor-card {
  position: relative;
  width: 100%;
  max-width: 320px;
  height: auto;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.07);
  overflow: hidden;
  transition:
    transform 0.35s cubic-bezier(0.22, 0.68, 0, 1.2),
    border-color 0.3s ease,
    box-shadow 0.3s ease;
  cursor: default;
}

.instructor-card:hover {
  transform: translateY(-8px) scale(1.015);
  border-color: rgba(255, 255, 255, 0.18);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
}

/* card destacada (central) */
.instructor-card.featured {
  border-color: rgba(0, 245, 255, 0.2);
  background: rgba(0, 245, 255, 0.04);
}

.instructor-card.featured:hover {
  border-color: rgba(0, 245, 255, 0.45);
}

/* seccion-bibliotecaria */

.section-bibliotecaria .instructors-grid {
  grid-template-columns: 1fr;
  max-width: 420px;
  margin-left: auto;
  margin-right: auto;
}

/* ——— GLOW DINÁMICO ——— */
.inst-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: 18px;
  opacity: 0;
  background: radial-gradient(circle at 50% 0%,
      color-mix(in srgb, var(--inst-color) 30%, transparent),
      transparent 65%);
  transition: opacity 0.4s ease;
}

.instructor-card:hover .inst-glow {
  opacity: 1;
}

/* ——— INNER ——— */
.instructor-card-inner {
  padding: 2rem 1.75rem 2rem;
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
}

/* ——— NÚMERO ——— */
.inst-number {
  font-family: "Orbitron", sans-serif;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: rgba(255, 255, 255, 0.18);
  margin-bottom: -0.5rem;
}

/* ——— FOTO ——— */
.inst-photo-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 4;
  /* retrato vertical */
  border-radius: 12px;
  overflow: hidden;
}

.inst-photo-frame {
  width: 100%;
  height: 100%;
  position: relative;
}

/* imagen real */
.inst-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
  filter: saturate(0.85) contrast(1.05);
  transition:
    filter 0.4s ease,
    transform 0.5s ease;
}

.instructor-card:hover .inst-photo {
  filter: saturate(1.1) contrast(1.08);
  transform: scale(1.04);
}

/* placeholder si no hay foto */
.inst-photo-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg,
      rgba(255, 255, 255, 0.04),
      rgba(255, 255, 255, 0.01));
  z-index: 0;
}

/* Muestra placeholder solo si la imagen falla */
.inst-photo {
  position: relative;
  z-index: 1;
}

.inst-photo[src=""],
.inst-photo:not([src]) {
  display: none;
}

.inst-initials {
  font-family: "Orbitron", sans-serif;
  font-size: 2.5rem;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.1);
  letter-spacing: 0.1em;
}

/* línea scan animada */
.inst-scan-line {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg,
      transparent,
      rgba(0, 245, 255, 0.5),
      transparent);
  top: -5%;
  animation: scanMove 4s linear infinite;
  pointer-events: none;
  z-index: 3;
  opacity: 0;
  transition: opacity 0.3s;
}

.instructor-card:hover .inst-scan-line {
  opacity: 1;
}

@keyframes scanMove {
  0% {
    top: -5%;
  }

  100% {
    top: 105%;
  }
}

/* esquinas decorativas */
.inst-corner {
  position: absolute;
  width: 14px;
  height: 14px;
  border-color: rgba(255, 255, 255, 0.35);
  border-style: solid;
  z-index: 4;
  transition: border-color 0.3s;
}

.instructor-card:hover .inst-corner {
  border-color: rgba(255, 255, 255, 0.7);
}

.inst-corner.tl {
  top: 6px;
  left: 6px;
  border-width: 2px 0 0 2px;
}

.inst-corner.tr {
  top: 6px;
  right: 6px;
  border-width: 2px 2px 0 0;
}

.inst-corner.bl {
  bottom: 6px;
  left: 6px;
  border-width: 0 0 2px 2px;
}

.inst-corner.br {
  bottom: 6px;
  right: 6px;
  border-width: 0 2px 2px 0;
}

/* ——— INFO ——— */
.inst-badge {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-family: "Orbitron", sans-serif;
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  color: rgba(255, 255, 255, 0.45);
  text-transform: uppercase;
}

.inst-badge .badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--dot-color, #fff);
  box-shadow: 0 0 6px var(--dot-color, #fff);
  animation: pulseDot 2s ease-in-out infinite;
}

@keyframes pulseDot {

  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }

  50% {
    opacity: 0.55;
    transform: scale(0.75);
  }
}

.inst-name {
  font-family: "Orbitron", sans-serif;
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.03em;
  line-height: 1.3;
  margin: 0.25rem 0 0;
}

.instructor-card.featured .inst-name {
  color: #00f5ff;
}

.inst-role {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.4);
  margin: 0.3rem 0 0;
  font-family: "Exo 2", sans-serif;
  font-weight: 300;
  letter-spacing: 0.04em;
}

.inst-desc {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.65;
  margin: 0.6rem 0 0;
  font-family: "Exo 2", sans-serif;
}

/* ——— TAGS ——— */
.inst-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.9rem;
}

.inst-tag {
  font-family: "Orbitron", sans-serif;
  font-size: 0.55rem;
  letter-spacing: 0.1em;
  padding: 0.3rem 0.65rem;
  border-radius: 100px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.5);
  background: rgba(255, 255, 255, 0.04);
  transition: all 0.25s ease;
}

.instructor-card:hover .inst-tag {
  border-color: rgba(255, 255, 255, 0.28);
  color: rgba(255, 255, 255, 0.75);
}

/* ——— RESPONSIVE ——— */
@media (max-width: 900px) {
  .instructors-grid {
    grid-template-columns: 1fr;
    max-width: 420px;
    margin-left: auto;
    margin-right: auto;
  }
}

@media (min-width: 600px) and (max-width: 900px) {
  .instructors-grid {
    grid-template-columns: repeat(2, 1fr);
    max-width: 700px;
  }
}

/* ——— DIVISOR DE SECCIÓN INSTRUCTORES ——— */
.section-divider-instructors {
  position: relative;
  width: 100%;
  padding: 3rem 2rem;
  display: flex;
  align-items: center;
  gap: 1.2rem;
  overflow: hidden;
}

.section-divider-instructors::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg,
      transparent 0%,
      rgba(0, 245, 255, 0.04) 50%,
      transparent 100%);
  pointer-events: none;
}

.div-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg,
      transparent,
      rgba(0, 245, 255, 0.4),
      rgba(0, 245, 255, 0.2),
      transparent);
}

.div-line.right {
  background: linear-gradient(90deg,
      transparent,
      rgba(0, 245, 255, 0.2),
      rgba(0, 245, 255, 0.4),
      transparent);
}

.div-center {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: "Orbitron", sans-serif;
  font-size: 0.55rem;
  letter-spacing: 0.3em;
  color: rgba(0, 245, 255, 0.6);
  text-transform: uppercase;
  white-space: nowrap;
}

.div-diamond {
  width: 7px;
  height: 7px;
  background: #00f5ff;
  transform: rotate(45deg);
  box-shadow: 0 0 10px #00f5ff;
}

.div-diamond.sm {
  width: 4px;
  height: 4px;
  background: rgba(0, 245, 255, 0.5);
  box-shadow: none;
}