/* ==========================================================================
   BigTelligent — Sección 4: Propuesta de Valor / Dolor-Solución
   Fuente de verdad: .rules/style.md
   ========================================================================== */

.value-prop {
  position: relative;
  padding-block: var(--section-padding-mobile);
  overflow: hidden;
}

@media (min-width: 900px) {
  .value-prop {
    padding-block: var(--section-padding);
  }
}

.value-prop__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--surface-dim);
  overflow: hidden;
}

.value-prop__blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.35;
  animation: value-prop-float 22s ease-in-out infinite;
}

.value-prop__blob--orange {
  width: 480px;
  height: 480px;
  top: -160px;
  left: -140px;
  background: radial-gradient(circle, rgba(252, 91, 11, 0.5), transparent 70%);
}

.value-prop__blob--blue {
  width: 420px;
  height: 420px;
  bottom: -180px;
  right: -120px;
  background: radial-gradient(circle, rgba(38, 37, 70, 0.35), transparent 70%);
  animation-delay: -11s;
}

@keyframes value-prop-float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, -20px) scale(1.06); }
}

.value-prop__grid {
  display: grid;
  gap: 56px;
  align-items: center;
}

@media (min-width: 900px) {
  .value-prop__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 64px;
  }
}

/* --- Columna izquierda --- */

.value-prop__intro {
  max-width: 480px;
}

.value-prop__eyebrow {
  display: block;
  font-family: var(--font-body);
  font-size: var(--label-caps-size);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 16px;
}

.value-prop__title {
  font-size: var(--display-lg-size);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.value-prop__title em {
  font-style: normal;
  color: var(--primary);
}

.value-prop__text {
  font-family: var(--font-body);
  font-size: var(--body-lg-size);
  color: var(--on-surface-variant);
  line-height: 1.6;
}

/* --- Columna derecha: slider vertical --- */

.value-prop__slider {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.value-prop__viewport {
  position: relative;
  width: 100%;
  max-width: 460px;
  height: 335px;
  overflow: hidden;
}

@media (min-width: 480px) {
  .value-prop__viewport {
    height: 300px;
  }
}

.value-prop__track {
  position: absolute;
  inset: 0;
}

.pain-card {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 16px;
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.55s var(--ease-premium), transform 0.55s var(--ease-premium);
  pointer-events: none;
}

.pain-card.is-active {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.pain-card.is-prev {
  opacity: 0;
  transform: translateY(-40px);
}

.pain-card__stack {
  position: relative;
  width: 100%;
  max-width: 400px;
}

.pain-card__problem {
  position: relative;
  z-index: 1;
  background: var(--brand-white);
  border: 1px solid var(--outline-variant);
  border-radius: var(--rounded-lg);
  box-shadow: 0 8px 32px rgba(38, 37, 70, 0.08);
  padding: 28px 28px 44px;
}

.pain-card__label {
  display: block;
  font-family: var(--font-body);
  font-size: var(--annotation-size);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 12px;
}

.pain-card__problem-text {
  font-family: var(--font-display);
  font-size: var(--headline-sm-size);
  font-weight: 600;
  line-height: 1.25;
  color: var(--on-surface);
}

.pain-card__solution {
  position: absolute;
  z-index: 2;
  right: -16px;
  bottom: -72px;
  left: 56px;
  background: var(--brand-blue);
  color: var(--on-secondary);
  border-radius: var(--rounded-md);
  box-shadow: 0 10px 24px rgba(38, 37, 70, 0.28);
  padding: 16px 22px;
}

@media (max-width: 479px) {
  .pain-card__solution {
    left: 0;
    right: 0;
    width: 100%;
  }
}

@media (min-width: 900px) {
  .pain-card__solution {
    bottom: -47px;
  }
}

.pain-card__solution-label {
  display: block;
  font-family: var(--font-body);
  font-size: var(--annotation-size);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--brand-blue-light);
  margin-bottom: 6px;
}

.pain-card__solution-text {
  font-family: var(--font-body);
  font-size: var(--body-md-size);
  font-weight: 600;
  line-height: 1.35;
}

/* --- Controles / flechas --- */

.value-prop__controls {
  display: flex;
  align-items: center;
  gap: 20px;
}

.value-prop__nav {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--rounded-full);
  background: var(--brand-white);
  border: 1px solid var(--outline-variant);
  color: var(--secondary);
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(38, 37, 70, 0.08);
  transition: transform 0.25s var(--ease-premium), box-shadow 0.25s var(--ease-premium), border-color 0.25s var(--ease-premium), color 0.25s var(--ease-premium);
}

.value-prop__nav svg {
  width: 18px;
  height: 18px;
}

.value-prop__nav:hover,
.value-prop__nav:focus-visible {
  transform: scale(1.08);
  box-shadow: 0 12px 28px rgba(38, 37, 70, 0.22);
  border-color: var(--primary);
  color: var(--primary);
}

.value-prop__nav:active {
  transform: scale(0.96);
}

.value-prop__nav:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 3px;
}

.value-prop__dots {
  display: flex;
  align-items: center;
  gap: 8px;
}

.value-prop__dot {
  width: 8px;
  height: 8px;
  border-radius: var(--rounded-full);
  background: var(--outline);
  border: none;
  padding: 0;
  cursor: pointer;
  transition: background 0.25s var(--ease-premium), width 0.25s var(--ease-premium);
}

.value-prop__dot.is-active {
  background: var(--primary);
  width: 24px;
}