/* src/css/solar-page.css */
/* Plantilla compartida para las 5 páginas de producto solar.
   Piloto: on-grid.html. Se aplica en las demás en Fase 3. */

/* ── Solar Hero ──────────────────────────────────────────── */

.solar-hero {
  display: grid;
  grid-template-columns: 1fr;
  min-height: 100dvh;
  background-color: var(--color-dark);
}

@media (min-width: 960px) {
  .solar-hero {
    grid-template-columns: 1fr 1fr;
  }
}

/* Panel izquierdo (contenido) */
.solar-hero__content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--section-pad-y) var(--section-pad-x);
  color: var(--color-text-primary);
  position: relative;
  z-index: 1;
}

@media (max-width: 960px) {
  .solar-hero__content {
    padding: var(--space-16) var(--space-6);
  }
}

.solar-hero__breadcrumb {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: var(--space-6);
}

.solar-hero__breadcrumb a {
  color: var(--color-light-50);
  text-decoration: none;
  font-size: var(--text-xs);
  font-weight: 500;
  transition: color var(--duration-fast);
}

.solar-hero__breadcrumb a:hover {
  color: var(--color-text-primary);
}

.solar-hero__breadcrumb-sep {
  margin-inline: var(--space-2);
  opacity: 0.35;
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}

.solar-hero__system-name {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-yellow);
  margin-bottom: var(--space-5);
}

.solar-hero__system-name::before {
  content: '';
  display: block;
  width: 20px;
  height: 1px;
  background: var(--color-yellow);
  opacity: 0.6;
}

.solar-hero__title {
  font-weight: 700;
  font-size: clamp(2.25rem, 4.5vw, 3.75rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--color-text-primary);
  max-width: 18ch;
  margin-bottom: var(--space-5);
}

.solar-hero__title em {
  font-style: italic;
  font-weight: 600;
  color: var(--color-yellow);
}

.solar-hero__sub {
  font-size: var(--text-base);
  color: var(--color-light-60);
  max-width: 42ch;
  line-height: 1.65;
  margin-bottom: var(--space-8);
}

.solar-hero__actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.solar-hero__actions .hs-btn {
  padding-inline: var(--space-8);
}

/* Panel derecho (imagen) */
.solar-hero__image {
  position: relative;
  overflow: hidden;
  min-height: 400px;
}

.solar-hero__image-inner {
  width: 100%;
  height: 100%;
  position: absolute;
  inset: 0;
  object-fit: cover;
}

.solar-hero__image::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    to right,
    var(--color-dark) 0%,
    transparent 35%
  );
  pointer-events: none;
}

@media (max-width: 960px) {
  .solar-hero__image::before {
    background: linear-gradient(
      to bottom,
      var(--color-dark) 0%,
      transparent 30%
    );
  }
}

/* ── Specs Snapshot strip ────────────────────────────────── */

.specs-snapshot {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--color-border-dark);
  background: var(--color-dark);
}

@media (min-width: 640px) {
  .specs-snapshot {
    grid-template-columns: repeat(4, 1fr);
  }
}

.specs-snapshot__item {
  padding: var(--space-8) var(--space-8);
  border-right: 1px solid var(--color-border-dark);
  border-bottom: 1px solid var(--color-border-dark);
}

.specs-snapshot__item:last-child {
  border-right: none;
}

@media (min-width: 640px) {
  .specs-snapshot__item:last-child {
    border-right: none;
  }
}

@media (max-width: 640px) {
  .specs-snapshot__item:nth-child(2n) {
    border-right: none;
  }
  .specs-snapshot__item:nth-last-child(-n+2) {
    border-bottom: none;
  }
}

@media (min-width: 640px) {
  .specs-snapshot__item {
    border-bottom: none;
  }
}

.specs-snapshot__label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-light-45);
  margin-bottom: var(--space-2);
}

.specs-snapshot__value {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-xl);
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.specs-snapshot__sub {
  font-size: 11px;
  color: var(--color-light-35);
  margin-top: var(--space-1);
  line-height: 1.4;
}

/* ── How It Works — 6 pasos ─────────────────────────────── */

.how-it-works {
  padding-block: var(--section-pad-y);
  background: var(--color-white);
}

/* Layout 2-col: pasos izquierda + infografía derecha */
.how-it-works__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-16);
  align-items: start;
}

@media (min-width: 960px) {
  .how-it-works__layout {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-20);
    align-items: start;
  }
}

/* UNUSED — verify before deleting */
.how-it-works__infografia {
  position: sticky;
  top: calc(var(--space-16) + 80px);
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--color-bg-neutral);
  border: 1px solid var(--color-border-light);
}

/* UNUSED — verify before deleting */
.how-it-works__infografia-img {
  width: 100%;
  height: auto;
  display: block;
}

.how-it-works__header {
  margin-bottom: var(--space-12);
}

.how-it-works__steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  position: relative;
}

/* Dentro del layout con infografía los pasos siempre en 1 columna */
.how-it-works__left .how-it-works__steps {
  grid-template-columns: 1fr;
}

.sp-step {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 0 var(--space-5);
  padding-block: var(--space-8);
  border-top: 1px solid var(--color-border-light);
}

.sp-step__num-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 2px;
}

.sp-step__num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--color-yellow);
  line-height: 1;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1.5px solid var(--color-yellow);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.sp-step__line {
  flex: 1;
  width: 1px;
  background: var(--color-border-light);
  margin-top: var(--space-3);
  min-height: var(--space-8);
}

.sp-step:last-child .sp-step__line,
.sp-step:nth-last-child(-n+1) .sp-step__line {
  display: none;
}

@media (min-width: 768px) {
  .sp-step:nth-last-child(-n+2) .sp-step__line {
    display: none;
  }
}

@media (min-width: 1100px) {
  .sp-step:nth-last-child(-n+2) .sp-step__line {
    display: block;
  }
  .sp-step:nth-last-child(-n+3) .sp-step__line {
    display: none;
  }
}

.sp-step__body {
  padding-top: 2px;
  padding-bottom: var(--space-4);
}

.sp-step__title {
  font-weight: 700;
  font-size: var(--text-base);
  color: var(--color-text-dark);
  margin-bottom: var(--space-2);
  line-height: 1.25;
}

.sp-step__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted-dk);
  line-height: 1.65;
  max-width: 38ch;
}

/* ── Benefits Grid — 2×2 sobre oscuro ──────────────────── */

.sp-benefits {
  padding-block: var(--section-pad-y);
  background: var(--color-dark);
  color: var(--color-text-primary);
}

.sp-benefits__header {
  margin-bottom: var(--space-16);
}

.sp-benefits__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

@media (min-width: 640px) {
  .sp-benefits__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.sp-benefit {
  padding: var(--space-8) var(--space-8) var(--space-8) 0;
  border-top: 1px solid var(--color-border-dark);
}

@media (min-width: 640px) {
  .sp-benefit:nth-child(2n) {
    padding-left: var(--space-8);
    border-left: 1px solid var(--color-border-dark);
    padding-right: 0;
  }
  .sp-benefit:nth-child(3),
  .sp-benefit:nth-child(4) {
    border-bottom: none;
  }
}

.sp-benefit__title {
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.sp-benefit__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  max-width: 42ch;
}

/* ── Ideal For — 3 cards ────────────────────────────────── */

.ideal-for {
  padding-block: var(--section-pad-y);
  background: var(--color-bg-neutral);
}

.ideal-for__header {
  margin-bottom: var(--space-12);
}

.ideal-for__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--grid-gap);
}

@media (min-width: 640px) {
  .ideal-for__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.sp-ideal-card {
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  border-top: 3px solid var(--color-yellow);
}

.sp-ideal-card__num {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-2xl);
  color: rgba(242, 168, 0, 0.35);
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: var(--space-4);
}

.sp-ideal-card__title {
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--color-text-dark);
  margin-bottom: var(--space-3);
}

.sp-ideal-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted-dk);
  line-height: 1.65;
}

/* ── Projects Mini — 3 cards compactas ──────────────────── */

.projects-mini {
  padding-block: var(--section-pad-y);
  background: var(--color-white);
}

.projects-mini__header {
  margin-bottom: var(--space-12);
}

.projects-mini__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--grid-gap);
}

@media (min-width: 640px) {
  .projects-mini__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Article wrapper: sin borde propio, solo agrupa imagen + texto */
.sp-project-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition:
    transform var(--duration-base) var(--ease-out-expo);
}

.sp-project-card:hover {
  transform: translateY(-3px);
}

/* La imagen SÍ tiene bordes redondeados y es el elemento visual */
.sp-project-card__img {
  position: relative;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border-radius: var(--radius-xl);
  transition: box-shadow var(--duration-base) var(--ease-out-expo);
}

.sp-project-card:hover .sp-project-card__img {
  box-shadow: 0 8px 28px rgba(7, 46, 51, 0.14);
}

.sp-project-card__img-inner {
  width: 100%;
  height: 100%;
  background: var(--color-surface-elevated);
}

.sp-project-card__meta {
  position: absolute;
  bottom: var(--space-3);
  left: var(--space-3);
}

/* Texto debajo de la imagen, sin padding de card */
.sp-project-card__body {
  padding: 0;
}

.sp-project-card__loc {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-teal);
  margin-bottom: var(--space-1);
}

.sp-project-card__title {
  font-weight: 700;
  font-size: var(--text-base);
  color: var(--color-text-dark);
  line-height: 1.25;
}

/* ── FAQ ─────────────────────────────────────────────────── */

.sp-faq {
  padding-block: var(--section-pad-y);
  background: var(--hs-dark);
  color: var(--color-white);
}

/* Grid 2 cols: sticky title izq · accordion der */
.sp-faq .cu-faq__inner {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 96px;
  align-items: start;
}

/* ── Columna izquierda ──────────────────────── */

.sp-faq .cu-faq__left {
  position: sticky;
  top: 32px;
}

.sp-faq .cu-faq__h2 {
  font-size: 56px;
  line-height: 1;
  letter-spacing: -0.03em;
  font-weight: 700;
  margin-top: 22px;
  color: var(--color-white);
}

.sp-faq .cu-faq__h2-muted {
  color: rgba(250, 250, 248, 0.45);
}

.sp-faq .cu-faq__desc {
  font-size: 15px;
  line-height: 1.65;
  color: rgba(250, 250, 248, 0.6);
  margin-top: 24px;
  max-width: 38ch;
}

/* ── Accordion ──────────────────────────────── */

.sp-faq .cu-faq__accordion {
  border-top: 1px solid rgba(250, 250, 248, 0.15);
}

.sp-faq .cu-faq-item {
  border-bottom: 1px solid rgba(250, 250, 248, 0.15);
}

.sp-faq .cu-faq-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 26px 0;
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--color-white);
  text-align: left;
}

.sp-faq .cu-faq-btn__left {
  display: flex;
  align-items: baseline;
  gap: 20px;
  flex: 1;
}

.sp-faq .cu-faq-btn__num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: rgba(250, 250, 248, 0.4);
  flex-shrink: 0;
}

.sp-faq .cu-faq-item[data-open="true"] .cu-faq-btn__num {
  color: var(--hs-yellow);
}

.sp-faq .cu-faq-btn__question {
  font-family: var(--hs-display, 'Outfit', sans-serif);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: rgba(250, 250, 248, 0.85);
}

.sp-faq .cu-faq-item[data-open="true"] .cu-faq-btn__question {
  color: var(--color-white);
}

.sp-faq .cu-faq-btn__icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(250, 250, 248, 0.25);
  background: transparent;
  color: rgba(250, 250, 248, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 500;
  flex-shrink: 0;
  transition: all 0.2s;
  line-height: 1;
}

.sp-faq .cu-faq-item[data-open="true"] .cu-faq-btn__icon {
  border-color: var(--hs-yellow);
  background: var(--hs-yellow);
  color: var(--hs-ink);
}

/* ── Panel de respuesta ─────────────────────── */

.sp-faq .cu-faq-panel {
  overflow: hidden;
  max-height: 600px;
  opacity: 1;
  transition: max-height 0.22s ease, opacity 0.2s ease;
}

.sp-faq .cu-faq-item[data-open="false"] .cu-faq-panel {
  max-height: 0;
  opacity: 0;
}

.sp-faq .cu-faq-panel[hidden] {
  display: none !important;
}

.sp-faq .cu-faq-panel__answer {
  padding: 0 64px 28px 51px;
  font-size: 16px;
  line-height: 1.7;
  color: rgba(250, 250, 248, 0.7);
  max-width: 60ch;
}

/* ── Reduced motion ─────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .sp-faq .cu-faq-panel,
  .sp-faq .cu-faq-btn__icon {
    transition: none;
  }
}

/* ── Responsive ─────────────────────────────── */

@media (max-width: 960px) {
  .sp-faq .cu-faq__inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .sp-faq .cu-faq__left {
    position: static;
  }

  .sp-faq .cu-faq__h2 {
    font-size: 44px;
  }
}

@media (max-width: 768px) {
  .sp-faq .cu-faq__h2 {
    font-size: 36px;
  }

  .sp-faq .cu-faq-btn__question {
    font-size: 17px;
  }

  .sp-faq .cu-faq-btn {
    padding: 20px 0;
    gap: 16px;
  }

  .sp-faq .cu-faq-panel__answer {
    padding: 0 8px 20px 31px;
    font-size: 15px;
  }
}

/* ── CTA Final ───────────────────────────────────────────── */

.sp-cta {
  padding-block: var(--section-pad-y);
  background: var(--color-dark-deep);
  color: var(--color-text-primary);
  text-align: center;
}

.sp-cta__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-8);
  max-width: 680px;
  margin-inline: auto;
}

.sp-cta__line {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--color-text-primary);
}

.sp-cta__line em {
  font-style: italic;
  font-weight: 600;
  color: var(--color-yellow);
}

.sp-cta__sub {
  font-size: var(--text-base);
  color: var(--color-light-55);
  max-width: 44ch;
  line-height: 1.6;
}

.sp-cta__trust {
  font-size: var(--text-sm);
  color: var(--color-light-35);
}

/* ── Back nav ────────────────────────────────────────────── */

.sp-back-nav {
  padding-block: var(--space-8);
  background: var(--color-light);
  border-top: 1px solid var(--color-border-light);
}

.sp-back-nav a {
  color: var(--color-text-dark);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 500;
  transition: color var(--duration-fast);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.sp-back-nav a:hover {
  color: var(--color-teal);
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}

/* ── Mobile adjustments ─────────────────────────────────── */

/* UNUSED — verify before deleting */
@media (max-width: 960px) {
  .how-it-works__infografia {
    position: static;
  }
}