/* ================================================================
   INGESOLAR — tecnologias.css
   Estilos de pages/tecnologias.html. Mobile-first.
   Requiere tokens.css y base.css cargados antes.
   ================================================================ */

/* ─── Gradientes decorativos por variante (paleta de tecnologías) ─ */
:root {
  --grad-interconectado: linear-gradient(135deg, #0d1b3e 0%, #1a3a6e 60%, #2a5298 100%);
  --grad-aislado:        linear-gradient(135deg, #0d2e1a 0%, #1a5c2a 60%, #2a8a3a 100%);
  --grad-hibrido:        linear-gradient(135deg, #1a0d3e 0%, #3d1a6e 60%, #6b35b5 100%);
  --grad-termica-agua:   linear-gradient(135deg, #3e1a0d 0%, #7c3010 60%, #c0501a 100%);
  --grad-termica-piscina:linear-gradient(135deg, #0d2840 0%, #0a4a7a 60%, #1070b0 100%);
  --grad-clima-res:      linear-gradient(135deg, #0d2040 0%, #0a3570 60%, #1560c0 100%);
  --grad-clima-emp:      linear-gradient(135deg, #1a1a2e 0%, #2e3a4e 60%, #3e5070 100%);
  --grad-bombeo-pozo:    linear-gradient(135deg, #1a1000 0%, #3a2800 60%, #5a4010 100%);
  --grad-bombeo-recirc:  linear-gradient(135deg, #001a20 0%, #003040 60%, #005060 100%);
  --grad-ilum-ext:       linear-gradient(135deg, #2e1a00 0%, #5a3a00 60%, #8a5a00 100%);
  --grad-ilum-via:       linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 60%, #2a2a4e 100%);
  --grad-pp-kit:         linear-gradient(135deg, #0a2e10 0%, #1a5a20 60%, #2d7a30 100%);
  --grad-pp-flex:        linear-gradient(135deg, #001020 0%, #002040 60%, #003870 100%);
}

/* ─── HERO ────────────────────────────────────────────────────────── */

.tech-hero {
  padding: var(--space-14) 0 var(--space-10);
  text-align: center;
}

.tech-hero .container {
  max-width: 900px;
  padding: 0 var(--space-8);
}

.tech-hero-heading {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 5.5vw, 2.75rem);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-white);
  margin: var(--space-4) 0 var(--space-6);
  letter-spacing: -0.01em;
}

.tech-hero-sub {
  font-size: 1rem;
  color: var(--color-text-on-dark);
  line-height: 1.6;
  max-width: 620px;
  margin: 0 auto;
}

/* ─── TECH NAV STICKY ─────────────────────────────────────────────── */

.tech-nav {
  position: sticky;
  top: var(--nav-height);
  z-index: calc(var(--nav-z) - 10);
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

@media (max-width: 899px) {
  .tech-nav {
    display: none;
  }
}

.tech-nav::-webkit-scrollbar {
  display: none;
}


@media (min-width: 900px) {
  .tech-nav {
    overflow-x: visible;
  }
}

.tech-nav-inner {
  display: flex;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  justify-content: center;
  width: 100%;
}

.tech-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  background: transparent;
  border: 1px solid var(--color-border);
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.tech-chip:hover {
  background: var(--color-cream);
  color: var(--color-text-base);
  border-color: var(--color-border-dark);
  text-decoration: none;
}

.tech-chip.active {
  background: var(--color-black);
  color: var(--color-solar);
  border-color: var(--color-black);
}


/* ─── SECCIONES ───────────────────────────────────────────────────── */

.tech-section {
  padding: var(--space-12) 0;
  /* offset de scroll para no quedar tapado por navbar + tech-nav */
  scroll-margin-top: 140px;
}

/* Centra todos los contenidos dentro de las secciones de tecnología */
.tech-section .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

/* ─── INTRO DE SECCIÓN ────────────────────────────────────────────── */

.tech-intro {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--space-8);
}

.tech-badge {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

.tech-badge--ondark {
  color: var(--color-solar);
}

.tech-heading {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 700;
  line-height: var(--line-tight);
  color: var(--color-black);
  margin: 0 0 var(--space-3);
}

.tech-heading--ondark {
  color: var(--color-white);
}

.tech-sub {
  font-size: 1rem;
  color: var(--color-text-muted);
  line-height: var(--line-relaxed);
  margin: 0;
}

.tech-sub--ondark {
  color: var(--color-text-on-dark);
}

/* ─── BANNER SIMULADOR (sección climatización) ────────────────────── */

.tech-sim-banner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  background: linear-gradient(135deg, var(--color-black) 0%, #1a2e4a 100%);
  border: 1px solid var(--color-solar);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-4);
  margin-top: var(--space-6);
  flex-wrap: wrap;
  width: fit-content;
}

.tech-sim-banner__text {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  text-align: left;
}

.tech-sim-banner__text strong {
  font-family: var(--font-body);
  font-size: .95rem;
  font-weight: 700;
  color: var(--color-white);
}

.tech-sim-banner__text span {
  font-size: .8rem;
  color: var(--color-text-on-dark);
}

.tech-sim-banner__cta {
  flex-shrink: 0;
}

/* ─── DIAGRAMA SVG en variant-visual ──────────────────────────────── */

.variant-diagram {
  width: 100%;
  height: 100%;
  display: block;
}

/* ─── GRID DE VARIANTES ───────────────────────────────────────────── */

.variant-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  grid-auto-rows: 1fr;
}

@media (min-width: 580px) {
  .variant-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .variant-grid[data-cols="3"] {
    grid-template-columns: repeat(3, 1fr);
    width: 100%;
  }
  .variant-grid[data-cols="2"] {
    grid-template-columns: repeat(2, 1fr);
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
  }
}

/* ─── VARIANT CARD ────────────────────────────────────────────────── */

.variant-card {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.variant-card:hover {
  box-shadow: var(--shadow-md-hover);
  transform: translateY(-2px);
}

.variant-card--ondark {
  background: var(--color-black-3);
  border-color: rgba(255, 255, 255, 0.10);
}

.variant-card--ondark:hover {
  border-color: rgba(255, 255, 255, 0.18);
}

/* ─── VISUAL HEADER (gradiente + icono) ───────────────────────────── */

.variant-visual {
  aspect-ratio: 5/4;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  position: relative;
  overflow: hidden;
}

.variant-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 60% 40%, rgba(245, 192, 58, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.variant-visual-icon {
  font-size: 2rem;
  line-height: 1;
  display: block;
  filter: drop-shadow(0 2px 8px rgba(0,0,0,0.3));
}

.variant-visual-label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.80);
}

/* Gradientes por variante */
.variant-visual--interconectado  {
  background: url('/assets/img/tech-fv-ongrid.webp') center/cover no-repeat;
}
.variant-visual--aislado          {
  background: url('/assets/img/tech-fv-offgrid.webp') center/cover no-repeat;
}
.variant-visual--hibrido          {
  background: url('/assets/img/tech-fv-hibrido.webp') center/cover no-repeat;
}
.variant-visual--termica-agua     {
  background: url('/assets/img/tech-termica-ducha.webp') center/cover no-repeat;
}
.variant-visual--termica-piscina  {
  background: url('/assets/img/tech-termica-piscina.webp') center/cover no-repeat;
}
.variant-visual--clima-res        {
  background: url('/assets/img/tech-aire-residencial.webp') center/cover no-repeat;
}
.variant-visual--clima-emp        {
  background: url('/assets/img/tech-aire-industrial.webp') center/cover no-repeat;
}
.variant-visual--bombeo-pozo      {
  background: url('/assets/img/tech-bomba-pozo.webp') center/cover no-repeat;
}
.variant-visual--bombeo-recirc    {
  background: url('/assets/img/tech-bomba-recirc.webp') center/cover no-repeat;
}
.variant-visual--ilum-ext         {
  background: url('/assets/img/tech-ilum-espacio.webp') center/cover no-repeat;
}
.variant-visual--ilum-via         {
  background: url('/assets/img/tech-ilum-via.webp') center/cover no-repeat;
}
.variant-visual--pp-kit           {
  background: url('/assets/img/tech-plug-kit.webp') center/cover no-repeat;
}
.variant-visual--pp-flex          {
  background: url('/assets/img/tech-plug-flex.webp') center/cover no-repeat;
}

/* ─── VARIANT BODY ────────────────────────────────────────────────── */

.variant-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: var(--space-3);
  gap: var(--space-1);
}

.variant-name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-black);
  margin: 0;
  line-height: var(--line-tight);
}

.variant-card--ondark .variant-name {
  color: var(--color-white);
}

.variant-ideal {
  font-size: .875rem;
  color: var(--color-text-muted);
  line-height: var(--line-normal);
  margin: 0;
}

.variant-card--ondark .variant-ideal {
  color: var(--color-text-on-dark);
}

.variant-ideal strong {
  color: var(--color-text-base);
}

.variant-card--ondark .variant-ideal strong {
  color: var(--color-solar);
}

/* CTA siempre al fondo de la card */
.variant-cta {
  margin-top: auto;
}

/* ─── ACCORDION ───────────────────────────────────────────────────── */

.variant-accordion {
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  margin: 0;
}

.variant-card--ondark .variant-accordion {
  border-color: rgba(255, 255, 255, 0.10);
}

.variant-accordion summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-3) 0;
  font-family: var(--font-body);
  font-size: var(--text-md);
  font-weight: 600;
  color: var(--color-text-base);
  cursor: pointer;
  user-select: none;
  transition: color var(--transition-fast);
}

.variant-accordion summary::-webkit-details-marker { display: none; }
.variant-accordion summary::marker               { display: none; }

.variant-accordion summary::after {
  content: '';
  display: block;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%236E6D67' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 6l4 4 4-4'/%3E%3C/svg%3E");
  background-size: contain;
  background-repeat: no-repeat;
  transition: transform var(--transition-fast);
}

.variant-accordion[open] summary::after {
  transform: rotate(180deg);
}

.variant-accordion summary:hover {
  color: var(--color-black);
}

.variant-card--ondark .variant-accordion summary {
  color: var(--color-text-on-dark);
}

.variant-card--ondark .variant-accordion summary:hover {
  color: var(--color-white);
}

.variant-card--ondark .variant-accordion summary::after {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%23AEADA7' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 6l4 4 4-4'/%3E%3C/svg%3E");
}

/* Contenido del accordion */
.accordion-content {
  padding: var(--space-4) 0 var(--space-3);
  animation: accordionFadeIn 0.18s ease;
}

@keyframes accordionFadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0);    }
}

/* ─── DIAGRAMA DE FLUJO ───────────────────────────────────────────── */

.tech-flow {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-bottom: var(--space-3);
}

.flow-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  text-align: center;
  min-width: 48px;
}

.flow-icon {
  font-size: 1.5rem;
  line-height: 1;
  display: block;
}

.flow-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--color-text-muted);
  line-height: 1.2;
  max-width: 64px;
}

.variant-card--ondark .flow-label {
  color: var(--color-text-on-dark);
}

.flow-arrow {
  display: block;
  flex-shrink: 0;
  width: 20px;
  height: 2px;
  background: var(--color-solar);
  margin-top: 12px;
  position: relative;
}

.flow-arrow::after {
  content: '';
  position: absolute;
  right: -5px;
  top: -4px;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  border-left: 6px solid var(--color-solar);
}

.variant-explain {
  font-size: .875rem;
  color: var(--color-text-muted);
  line-height: var(--line-relaxed);
  margin: 0;
}

.variant-card--ondark .variant-explain {
  color: var(--color-text-on-dark);
}

/* ─── RESPONSIVE — DESKTOP 900px+ ────────────────────────────────── */

@media (min-width: 580px) {
  .tech-hero .container {
    padding: 0 var(--space-10);
  }
}

@media (min-width: 900px) {
  .tech-hero {
    padding: var(--space-16) 0 var(--space-12);
  }

  .tech-hero .container {
    padding: 0 var(--space-12);
  }

  .tech-section {
    padding: var(--space-12) 0;
  }

  .tech-intro {
    margin-bottom: var(--space-8);
  }

  .variant-grid {
    gap: var(--space-5);
  }

  .variant-visual-icon {
    font-size: 2.5rem;
  }
}