/* =============================================
   UPS y Baterías Kaise — Colores oficiales kaise.es
   https://kaise.es/
   ============================================= */

:root {
  /* Marca Kaise / Tempel Group — alineado con kaise.es */
  --color-primary: #0c4da2;
  --color-primary-dark: #0a3d82;
  --color-primary-light: #0693e3;
  --color-kaise: #a90707;
  --color-kaise-alt: #cf2e2e;
  --color-kaise-logo: #c82318;

  /* Neutros kaise.es */
  --color-bg: #ffffff;
  --color-surface: #efefef;
  --color-surface-alt: #f5f7fa;
  --color-card: #ffffff;
  --color-card-hover: #f8f9fb;
  --color-text: #373737;
  --color-text-medium: #444444;
  --color-text-muted: #818a91;
  --color-border: #d8dde3;
  --color-footer: #373737;

  /* Funcionales */
  --color-accent: #a90707;
  --color-whatsapp: #25d366;
  --color-white: #ffffff;

  /* RGB para transparencias */
  --color-primary-rgb: 12, 77, 162;
  --color-kaise-rgb: 169, 7, 7;

  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(12, 77, 162, 0.12);
  --header-h: 60px;
  --font: 'Roboto', system-ui, -apple-system, sans-serif;
  --font-display: 'Outfit', 'Roboto', system-ui, sans-serif;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6,
.hero__title,
.section-head__title,
.section-head__kicker,
.btn,
.header__cta,
.stat__num,
.brand__logo,
.pwa-header__back {
  font-family: var(--font-display);
}

a {
  color: inherit;
  text-decoration: none;
}

/* ---- Header ---- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: var(--color-primary);
  box-shadow: 0 2px 12px rgba(var(--color-primary-rgb), 0.25);
  color: var(--color-white);
}

.header__inner {
  max-width: 480px;
  margin: 0 auto;
  padding: 0 16px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.logo__img {
  display: block;
  height: 30px;
  width: auto;
  max-width: min(138px, 44vw);
}

.logo--header .logo__img {
  height: 26px;
  background: var(--color-white);
  border-radius: 6px;
  padding: 5px 8px;
  box-sizing: content-box;
}

.logo__icon {
  font-size: 1.4rem;
  color: var(--color-kaise-logo);
}

.logo__text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo__text strong {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--color-text);
}

.logo__text small {
  font-size: 0.65rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.header__cta {
  font-size: 0.85rem;
  font-weight: 600;
  padding: 8px 16px;
  background: var(--color-white);
  color: var(--color-primary);
  border-radius: 999px;
  transition: background 0.2s, color 0.2s;
}

.header__cta:active {
  background: var(--color-surface);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 14px 24px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  transition: transform 0.15s, background 0.2s;
  -webkit-tap-highlight-color: transparent;
}

.btn:active {
  transform: scale(0.97);
}

.btn--primary {
  background: var(--color-whatsapp);
  color: #fff;
}

.btn--kaise {
  background: var(--color-primary);
  color: var(--color-white);
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 14px 24px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  width: 100%;
}

.btn--kaise:active {
  background: var(--color-primary-dark);
}

.btn--energy {
  background: var(--color-kaise);
  color: var(--color-white);
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 14px 24px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
}

.btn--energy:active {
  background: #8a0606;
}

.btn--energy.btn--full {
  width: 100%;
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn--ghost {
  border-color: transparent;
  color: var(--color-text-muted);
}

.btn--full {
  width: 100%;
}

/* ---- Hero ---- */
.hero {
  padding: calc(var(--header-h) + 32px) 20px 40px;
  max-width: 480px;
  margin: 0 auto;
  text-align: center;
}

.hero__badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-kaise);
  background: rgba(var(--color-kaise-rgb), 0.08);
  border: 1px solid rgba(var(--color-kaise-rgb), 0.25);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
}

.hero__title {
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
}

.hero__title span {
  color: var(--color-kaise);
}

.hero__subtitle {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-bottom: 28px;
  max-width: 340px;
  margin-left: auto;
  margin-right: auto;
}

.hero__actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 36px;
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding: 20px;
  background: var(--color-surface);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow);
}

.stat__num {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--color-kaise);
}

.stat__label {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ---- Brand Kaise ---- */
.brand {
  padding: 0 20px 40px;
  max-width: 480px;
  margin: 0 auto;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.brand__card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-kaise);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.brand__logo {
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: 0.15em;
  color: var(--color-text);
  margin-bottom: 12px;
}

.brand__logo span {
  color: var(--color-kaise);
}

.brand__text {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.brand__text strong {
  color: var(--color-text);
}

.brand__parent {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.brand__parent strong {
  color: var(--color-kaise);
}

.brand__certs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
  margin-bottom: 16px;
}

.cert {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 5px 10px;
  background: rgba(var(--color-primary-rgb), 0.08);
  border: 1px solid rgba(var(--color-primary-rgb), 0.2);
  border-radius: 6px;
  color: var(--color-primary);
}

.brand__link {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
}

.brand__links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* ---- Products / UPS types ---- */
.products {
  padding: 28px 20px 28px;
  max-width: 480px;
  margin: 0 auto;
  background: linear-gradient(180deg, rgba(var(--color-primary-rgb), 0.03) 0%, transparent 120px);
}

.products .section-head {
  margin-bottom: 20px;
}

/* Teaser compartido · UPS y baterías */
.catalog-teaser {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 18px 16px 16px;
  box-shadow: var(--shadow);
}

.catalog-teaser--ups {
  border-top: 3px solid var(--color-primary);
  background: linear-gradient(180deg, rgba(var(--color-primary-rgb), 0.05) 0%, var(--color-card) 52%);
}

.catalog-teaser--batteries {
  border-top: 3px solid var(--color-kaise);
  background: linear-gradient(180deg, rgba(var(--color-kaise-rgb), 0.05) 0%, var(--color-card) 52%);
}

.catalog-teaser__head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 16px;
}

.catalog-teaser__icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  line-height: 1;
  border-radius: var(--radius-sm);
}

.catalog-teaser--ups .catalog-teaser__icon {
  background: rgba(var(--color-primary-rgb), 0.1);
}

.catalog-teaser--batteries .catalog-teaser__icon {
  background: rgba(var(--color-kaise-rgb), 0.1);
}

.catalog-teaser__tags {
  list-style: none;
  margin: 0;
  padding: 4px 0 0;
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.catalog-teaser__tags li {
  font-size: 0.84rem;
  color: var(--color-text-medium);
  line-height: 1.45;
  padding-left: 14px;
  position: relative;
}

.catalog-teaser__tags li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.catalog-teaser--ups .catalog-teaser__tags li::before {
  background: var(--color-primary);
}

.catalog-teaser--batteries .catalog-teaser__tags li::before {
  background: var(--color-kaise);
}

.catalog-teaser .btn--full {
  margin-top: 4px;
}

/* ---- Galerías · scroll horizontal ---- */
.gallery-section {
  padding: 0 0 28px;
  max-width: 480px;
  margin: 0 auto;
  --gallery-card-width: min(calc(100vw - 32px), 448px);
}

.gallery-section__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 0 20px 10px;
}

.gallery-section__title {
  font-size: 0.88rem;
  font-weight: 700;
  margin: 0;
  color: var(--color-text-medium);
}

.gallery-section__hint {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin: 0;
  white-space: nowrap;
}

.gallery-section--ups .gallery-section__title {
  color: var(--color-primary);
}

.gallery-section--battery .gallery-section__title {
  color: var(--color-kaise);
}

.gallery-section--battery {
  padding-top: 4px;
}

.gallery-section--projects {
  padding-bottom: 36px;
  background: linear-gradient(180deg, transparent 0%, rgba(var(--color-primary-rgb), 0.04) 100%);
}

.hscroll {
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scroll-snap-type: x proximity;
  scroll-padding-inline: 20px;
  scrollbar-width: none;
  padding: 2px 0 8px;
}

.hscroll--auto {
  overflow: hidden;
  cursor: grab;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
}

.hscroll--auto.hscroll--manual {
  overflow-x: auto;
  cursor: default;
}

.hscroll--auto.hscroll--paused {
  cursor: grabbing;
}

.hscroll__track--marquee {
  width: max-content;
  will-change: transform;
}

@media (prefers-reduced-motion: no-preference) {
  .hscroll--auto:not(.hscroll--manual) .hscroll__track--marquee {
    animation: gallery-marquee var(--marquee-duration, 12s) linear infinite;
    animation-play-state: running;
  }

  .hscroll--auto.hscroll--paused:not(.hscroll--manual) .hscroll__track--marquee {
    animation-play-state: paused;
  }
}

@keyframes gallery-marquee {
  from {
    transform: translate3d(0, 0, 0);
  }
  to {
    transform: translate3d(-50%, 0, 0);
  }
}

.gallery-section--ups {
  --marquee-duration: 11s;
}

.gallery-section--battery {
  --marquee-duration: 13s;
}

.gallery-section--projects {
  --marquee-duration: 12s;
}

.hscroll::-webkit-scrollbar {
  display: none;
}

.hscroll__track {
  display: flex;
  gap: 14px;
  list-style: none;
  margin: 0;
  padding: 0 16px;
  width: max-content;
}

.hscroll__item {
  scroll-snap-align: start;
  flex: 0 0 var(--gallery-card-width, min(calc(100vw - 32px), 448px));
}

.hscroll--auto .hscroll__item {
  scroll-snap-align: none;
}

.gallery-card {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.hscroll--auto.hscroll--paused .gallery-card {
  transform: scale(0.985);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.hscroll__item:active .gallery-card {
  transform: scale(0.975);
}

.gallery-section--ups .gallery-card {
  border-color: rgba(var(--color-primary-rgb), 0.2);
}

.gallery-section--battery .gallery-card {
  border-color: var(--color-border);
}

.gallery-card img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: var(--color-surface);
  pointer-events: none;
  -webkit-user-drag: none;
  user-select: none;
}

.gallery-card figcaption {
  padding: 10px 12px;
  font-size: 0.78rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-text-medium);
  border-top: 1px solid var(--color-border);
}

.gallery-section--ups .gallery-card figcaption {
  color: var(--color-primary);
}

.gallery-section--battery .gallery-card figcaption {
  color: var(--color-text-medium);
}

.ups-types {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 16px;
}

.ups-type-tab {
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 11px 14px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}

.ups-type-tab:hover {
  border-color: var(--color-primary);
}

.ups-type-tab--active,
.ups-type-tab[aria-selected="true"] {
  border-color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.08);
  color: var(--color-primary);
}

.ups-type-tab--new[aria-selected="true"] {
  border-color: var(--color-kaise);
  background: rgba(169, 7, 7, 0.06);
  color: var(--color-kaise);
}

.ups-type-hint {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  text-align: center;
  margin: 0 0 4px;
  padding: 14px 12px;
  background: var(--color-surface);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-sm);
}

.ups-type-hint[hidden] {
  display: none;
}

.ups-type-panels[hidden] {
  display: none;
}

.ups-type-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 18px 16px 16px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.ups-type-panel[hidden] {
  display: none;
}

.ups-type-panel__head {
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.ups-type-panel__series {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.ups-type-panel__series--new {
  color: var(--color-kaise);
}

.ups-type-panel__title {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0 0 4px;
  line-height: 1.25;
}

.ups-type-panel__tagline {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin: 0;
  line-height: 1.4;
}

.ups-type-features {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  font-size: 0.8rem;
  line-height: 1.5;
}

.ups-type-features li {
  position: relative;
  padding: 6px 0 6px 14px;
  border-bottom: 1px dashed rgba(0, 0, 0, 0.06);
}

.ups-type-features li:last-child {
  border-bottom: none;
}

.ups-type-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 13px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-primary);
}

.ups-type-uses {
  background: rgba(var(--color-primary-rgb), 0.05);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  margin-bottom: 12px;
}

.ups-type-uses__title {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  margin: 0 0 8px;
}

.ups-type-uses__list {
  margin: 0;
  padding: 0 0 0 16px;
  font-size: 0.8rem;
  line-height: 1.55;
  color: var(--color-text);
}

.ups-type-uses__list li + li {
  margin-top: 4px;
}

.ups-type-voltage {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin: 0 0 14px;
  line-height: 1.45;
}

.ups-type-cta {
  display: block;
  text-align: center;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  padding: 10px;
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-sm);
  transition: background 0.15s, color 0.15s;
}

.ups-type-cta:hover {
  background: var(--color-primary);
  color: #fff;
}

.products__grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.products__grid--compact {
  margin-top: 12px;
}

.product-chip {
  font-size: 0.85rem;
  font-weight: 600;
  padding: 12px 18px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.product-chip--sm {
  font-size: 0.78rem;
  padding: 8px 14px;
}

.product-chip--new {
  border-color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.08);
  color: var(--color-primary);
}

/* ---- Batteries ---- */
.batteries {
  padding: 36px 20px 28px;
  max-width: 480px;
  margin: 0 auto;
  background: linear-gradient(180deg, rgba(var(--color-kaise-rgb), 0.03) 0%, transparent 120px);
}

.batteries .section-head {
  margin-bottom: 20px;
}

.section-head--batteries .section-head__tag {
  color: var(--color-kaise);
}

.battery-pwa .ups-type-panels {
  margin-top: 16px;
}

.battery-group-label {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  text-align: center;
  margin: 14px 0 8px;
}

.batteries .ups-types {
  margin-bottom: 4px;
}

.ups-types--compact {
  gap: 6px;
}

.ups-type-tab--sm {
  font-size: 0.75rem;
  padding: 9px 12px;
}

.batteries .ups-type-panels {
  margin-top: 16px;
}

.battery-refs {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--color-border);
}

.battery-refs__title {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-kaise);
  margin: 0 0 12px;
}

.battery-refs__group + .battery-refs__group {
  margin-top: 14px;
}

.battery-refs__voltage {
  font-size: 0.82rem;
  font-weight: 700;
  margin: 0 0 2px;
  color: var(--color-text);
}

.battery-refs__hint {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  margin: 0 0 8px;
}

.battery-refs__grid {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.battery-refs__source {
  margin-top: 12px;
  text-align: center;
}

.ref-card--battery {
  background: var(--color-card);
}

.ref-card--battery .ref-card__series {
  color: var(--color-kaise);
  background: rgba(169, 7, 7, 0.08);
}

.tech-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 8px;
}

.tech-badge {
  font-size: 0.8rem;
  font-weight: 700;
  padding: 10px 20px;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-sm);
}

.tech-badge--litio {
  background: var(--color-kaise);
}

/* ---- Sectors ---- */
.sectors {
  padding: 0 20px 40px;
  max-width: 480px;
  margin: 0 auto;
}

.sectors__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.sector-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px 12px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  text-align: center;
}

.sector-card__icon {
  font-size: 1.4rem;
}

/* ---- Trust ---- */
.trust {
  padding: 32px 20px;
  max-width: 480px;
  margin: 0 auto;
  text-align: center;
}

.trust__quote {
  font-size: 0.95rem;
  font-style: italic;
  color: var(--color-text-muted);
  line-height: 1.7;
  border-left: 3px solid var(--color-kaise);
  padding-left: 16px;
  text-align: left;
}

.trust__attr {
  margin-top: 12px;
  font-size: 0.78rem;
  color: var(--color-primary);
  font-weight: 600;
}

/* ---- Section Head ---- */
.section-head {
  text-align: center;
  margin-bottom: 28px;
}

.section-head__tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.section-head__title {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.section-head__desc {
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

/* ---- Catalog PWA screen ---- */
body.catalog-pwa-open {
  overflow: hidden;
}

.catalog-pwa {
  position: fixed;
  inset: 0;
  z-index: 3000;
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
  animation: catalog-pwa-in 0.28s ease-out;
}

.catalog-pwa[hidden] {
  display: none;
}

@keyframes catalog-pwa-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Barra superior PWA — misma identidad que .header */
.pwa-header {
  position: relative;
  flex-shrink: 0;
  z-index: 1;
  padding-top: env(safe-area-inset-top);
  height: auto;
  min-height: calc(var(--header-h) + env(safe-area-inset-top));
}

.pwa-header .header__inner {
  min-height: var(--header-h);
}

.pwa-header__start {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  flex: 1;
}

.pwa-header__back {
  font-family: inherit;
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 10px;
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  cursor: pointer;
  transition: background 0.15s;
}

.pwa-header__back:hover {
  background: rgba(255, 255, 255, 0.22);
}

.pwa-header__back:active {
  background: rgba(255, 255, 255, 0.3);
}

.pwa-header .logo {
  min-width: 0;
}

.pwa-header .logo__text small {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 52vw;
}

.pwa-header__cta {
  font-family: inherit;
  border: none;
  cursor: pointer;
  flex-shrink: 0;
}

.catalog-pwa__scroll {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 16px 16px 88px;
  padding-bottom: max(88px, calc(24px + env(safe-area-inset-bottom)));
  max-width: 520px;
  margin: 0 auto;
  width: 100%;
}

.catalog-pwa__hero {
  margin-bottom: 16px;
}

.catalog-pwa__tag {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.catalog-pwa__title {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.25;
  margin: 0 0 8px;
  color: var(--color-text);
}

.catalog-pwa__intro {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.45;
  margin: 0;
}

.catalog-pwa .catalog-hint {
  margin: 0 0 12px;
}

.catalog-pwa .catalog-tabs {
  padding: 0;
  margin-bottom: 12px;
}

.catalog-pwa .catalog-mount {
  padding: 0;
}

.catalog-pwa__footer {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.pwa-segments {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  padding: 4px;
  margin-bottom: 16px;
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: 999px;
}

.pwa-segments__btn {
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 10px 12px;
  border: none;
  border-radius: 999px;
  background: transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, box-shadow 0.15s;
}

.pwa-segments__btn--active,
.pwa-segments__btn[aria-selected="true"] {
  background: var(--color-card);
  color: var(--color-primary);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

.pwa-segment .ups-type-panels {
  margin-top: 16px;
}

.ups-pwa .catalog-mount {
  padding: 0;
}

/* ---- PWA UPS · botones azules (outline → sólido) ---- */
.ups-pwa .catalog-pwa__tag {
  color: var(--color-primary);
}

.ups-pwa .pwa-segments--ups {
  background: rgba(var(--color-primary-rgb), 0.08);
  border-color: rgba(var(--color-primary-rgb), 0.18);
}

.ups-pwa .pwa-segments__btn--ups {
  color: var(--color-text-muted);
}

.ups-pwa .pwa-segments__btn--ups[aria-selected="true"],
.ups-pwa .pwa-segments__btn--ups.pwa-segments__btn--active {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 2px 10px rgba(var(--color-primary-rgb), 0.28);
}

.ups-pwa .ups-type-tab--ups {
  border-radius: 999px;
  border-width: 2px;
  background: var(--color-card);
  border-color: var(--color-border);
  color: var(--color-text-medium);
}

.ups-pwa .ups-type-tab--ups:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.ups-pwa .ups-type-tab--ups[aria-selected="true"],
.ups-pwa .ups-type-tab--ups.ups-type-tab--active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  box-shadow: 0 2px 10px rgba(var(--color-primary-rgb), 0.25);
}

.ups-pwa .ups-type-tab--ups.ups-type-tab--new[aria-selected="true"] {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #fff;
}

/* ---- PWA Baterías · mismos botones neutros que UPS (azul al activar) ---- */
.battery-pwa .catalog-pwa__tag,
.battery-pwa .battery-group-label {
  color: var(--color-text-muted);
}

.battery-pwa .battery-tab--chem,
.battery-pwa .battery-tab--line {
  border-radius: 999px;
  border-width: 2px;
  font-weight: 600;
  transition: background 0.15s, border-color 0.15s, color 0.15s, box-shadow 0.15s;
}

.battery-pwa .battery-tab--chem:not([aria-selected="true"]),
.battery-pwa .battery-tab--line:not([aria-selected="true"]),
.battery-pwa .battery-tab--litio:not([aria-selected="true"]) {
  background: var(--color-card);
  border-color: var(--color-border);
  color: var(--color-text-medium);
}

.battery-pwa .battery-tab--chem:hover,
.battery-pwa .battery-tab--line:hover,
.battery-pwa .battery-tab--litio:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.06);
}

.battery-pwa .battery-tab--chem[aria-selected="true"],
.battery-pwa .battery-tab--line[aria-selected="true"],
.battery-pwa .battery-tab--chem.ups-type-tab--active,
.battery-pwa .battery-tab--line.ups-type-tab--active,
.battery-pwa .battery-tab--litio[aria-selected="true"],
.battery-pwa .battery-tab--litio.ups-type-tab--active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  box-shadow: 0 2px 10px rgba(var(--color-primary-rgb), 0.25);
}

.battery-pwa .ups-type-panel__series {
  color: var(--color-primary);
}

.battery-pwa .ups-type-panel__series--new {
  color: var(--color-kaise);
}

.battery-pwa .ups-type-features li::before {
  background: var(--color-primary);
}

.battery-pwa .battery-refs__title {
  color: var(--color-primary);
}

/* ---- Catalog (legacy inline — removed) ---- */
.catalog {
  max-width: 480px;
  margin: 0 auto 20px;
  padding: 0 20px;
}

.catalog-details {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.catalog-details__summary {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-primary);
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

.catalog-details__summary::-webkit-details-marker {
  display: none;
}

.catalog-details__summary::before {
  content: '▸ ';
  display: inline-block;
  transition: transform 0.15s;
}

.catalog-details[open] .catalog-details__summary::before {
  transform: rotate(90deg);
}

.catalog-details__intro {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  line-height: 1.45;
  margin: 0;
  padding: 0 16px 12px;
  border-bottom: 1px solid var(--color-border);
}

.catalog-hint {
  margin: 12px 16px;
}

.catalog-tabs {
  padding: 0 12px 12px;
}

.catalog-mount {
  padding: 0 12px 16px;
}

.catalog-mount[hidden] {
  display: none;
}

.catalog-group[hidden] {
  display: none;
}

.catalog-group__title {
  font-size: 0.92rem;
  font-weight: 700;
  margin: 0 0 4px;
  color: var(--color-text);
}

.catalog-group__hint {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  line-height: 1.4;
  margin: 0 0 4px;
}

.catalog-group__use {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-primary);
  margin: 0 0 10px;
}

.catalog-group__grid {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ref-card {
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
}

.ref-card--info {
  background: rgba(var(--color-primary-rgb), 0.05);
  border-style: dashed;
}

.ref-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 10px;
  margin-bottom: 4px;
}

.ref-card__model {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-text);
}

.ref-card__series {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.08);
  padding: 2px 8px;
  border-radius: 4px;
}

.ref-card__spec {
  font-size: 0.72rem;
  color: var(--color-text-medium);
  margin: 0 0 4px;
}

.ref-card__desc {
  font-size: 0.78rem;
  line-height: 1.4;
  color: var(--color-text);
  margin: 0 0 4px;
}

.ref-card__meta {
  font-size: 0.65rem;
  color: var(--color-text-muted);
  margin: 0;
}

/* ---- Services ---- */
.services {
  padding: 40px 20px;
  max-width: 480px;
  margin: 0 auto;
}

.services__grid {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.service-card {
  position: relative;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px 20px 20px 24px;
  box-shadow: var(--shadow);
  transition: box-shadow 0.2s, border-color 0.2s;
}

.service-card:active {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
}

.service-card__num {
  position: absolute;
  top: 16px;
  right: 16px;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-text-muted);
  opacity: 0.5;
}

.service-card__icon {
  font-size: 1.6rem;
  margin-bottom: 10px;
}

.service-card__title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.35;
  padding-right: 28px;
  color: var(--color-text-medium);
}

.service-card__desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.service-card--highlight {
  background: linear-gradient(135deg, rgba(var(--color-kaise-rgb), 0.06) 0%, var(--color-card) 60%);
  border-color: rgba(var(--color-kaise-rgb), 0.35);
}

.service-card--linked {
  border-color: rgba(var(--color-primary-rgb), 0.35);
  cursor: pointer;
}

.service-card--linked:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
}

.service-card--highlight.service-card--linked:hover {
  border-color: rgba(var(--color-kaise-rgb), 0.55);
}

.service-card--highlight .service-card__num {
  color: var(--color-kaise);
  opacity: 1;
}

.service-card__link {
  display: inline-block;
  margin-top: 12px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  pointer-events: none;
}

.service-card--highlight .service-card__link {
  color: var(--color-kaise);
}

/* ---- Service PWA ---- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.service-pwa .catalog-pwa__tag {
  color: var(--color-primary);
}

.service-pwa__hero {
  text-align: center;
}

.service-pwa__icon {
  display: block;
  font-size: 2.25rem;
  line-height: 1;
  margin-bottom: 10px;
}

.service-pwa__block {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
}

.service-pwa__block--why {
  border-left: 4px solid var(--color-primary);
  background: linear-gradient(135deg, rgba(var(--color-primary-rgb), 0.06) 0%, var(--color-surface) 100%);
}

.service-pwa__block-title {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  margin: 0 0 10px;
}

.service-pwa__list {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--color-text-medium);
}

.service-pwa__list li {
  position: relative;
  padding: 6px 0 6px 14px;
  border-bottom: 1px dashed rgba(0, 0, 0, 0.06);
}

.service-pwa__list li:last-child {
  border-bottom: none;
}

.service-pwa__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 13px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-primary);
}

.service-pwa__why {
  font-size: 0.84rem;
  line-height: 1.55;
  color: var(--color-text-medium);
  margin: 0;
}

.service-pwa__block--commercial {
  border-left: 4px solid var(--color-kaise);
  background: linear-gradient(135deg, rgba(var(--color-kaise-rgb), 0.05) 0%, var(--color-surface) 100%);
}

.service-pwa__commercial {
  font-size: 0.84rem;
  line-height: 1.55;
  color: var(--color-text-medium);
  margin: 0 0 12px;
}

.service-pwa__brand-note {
  font-size: 0.8rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--color-primary);
  margin: 0;
  padding: 10px 12px;
  background: rgba(var(--color-primary-rgb), 0.08);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(var(--color-primary-rgb), 0.15);
}

.service-pwa__tags {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.service-pwa__tags li {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(var(--color-primary-rgb), 0.08);
  border: 1px solid rgba(var(--color-primary-rgb), 0.2);
  color: var(--color-primary);
}

/* ---- Process ---- */
.process {
  padding: 40px 20px;
  max-width: 480px;
  margin: 0 auto;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.process__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.process__step {
  display: flex;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
  position: relative;
}

.process__step:last-child {
  border-bottom: none;
}

.process__dot {
  flex-shrink: 0;
  width: 12px;
  height: 12px;
  margin-top: 6px;
  background: var(--color-primary);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(var(--color-primary-rgb), 0.15);
}

.process__step strong {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.process__step p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ---- Contact ---- */
.contact {
  padding: 40px 20px;
  max-width: 480px;
  margin: 0 auto;
}

.contact__card {
  background: linear-gradient(160deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow-lg);
  color: var(--color-white);
}

.contact__title {
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.contact__desc {
  font-size: 0.9rem;
  opacity: 0.9;
  margin-bottom: 24px;
}

.contact__note {
  font-size: 0.72rem;
  opacity: 0.6;
  margin-top: 12px;
}

.contact__email {
  display: inline-block;
  margin-top: 16px;
  font-size: 0.85rem;
  opacity: 0.85;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---- Footer ---- */
.footer {
  padding: 32px 20px 100px;
  max-width: 480px;
  margin: 0 auto;
  text-align: center;
  background: var(--color-footer);
  color: var(--color-white);
  width: 100%;
  max-width: none;
}

.footer__brand {
  font-size: 0.95rem;
  margin-bottom: 4px;
  color: var(--color-white);
}

.footer__brand strong {
  color: var(--color-white);
}

.footer__parent {
  font-size: 0.72rem;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 16px;
}

.footer__nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-bottom: 16px;
}

.footer__nav a {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
}

.footer__nav a:hover {
  color: var(--color-white);
  text-decoration: underline;
}

.footer__copy {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.6);
}

/* ---- WhatsApp Float ---- */
.whatsapp-float {
  position: fixed;
  bottom: max(24px, env(safe-area-inset-bottom));
  right: 20px;
  z-index: 200;
  width: 58px;
  height: 58px;
  background: linear-gradient(145deg, #2bd673 0%, var(--color-whatsapp) 45%, #1da851 100%);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow:
    0 8px 28px rgba(37, 211, 102, 0.45),
    0 2px 8px rgba(0, 0, 0, 0.12);
  transition: transform 0.2s, box-shadow 0.2s;
  border: 2px solid rgba(255, 255, 255, 0.35);
}

.whatsapp-float__ring {
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 2px solid rgba(37, 211, 102, 0.35);
  animation: wa-pulse 2.4s ease-out infinite;
  pointer-events: none;
}

@keyframes wa-pulse {
  0% {
    transform: scale(0.92);
    opacity: 0.7;
  }
  70%, 100% {
    transform: scale(1.18);
    opacity: 0;
  }
}

.whatsapp-float:hover {
  box-shadow:
    0 10px 32px rgba(37, 211, 102, 0.55),
    0 4px 12px rgba(0, 0, 0, 0.14);
}

.whatsapp-float:active {
  transform: scale(0.94);
}

body.catalog-pwa-open > .whatsapp-float:not(.whatsapp-float--pwa) {
  display: none;
}

.whatsapp-float--pwa {
  position: fixed;
  z-index: 3010;
  width: auto;
  min-width: 58px;
  height: 54px;
  padding: 0 18px 0 16px;
  gap: 10px;
  border-radius: 999px;
  bottom: max(20px, env(safe-area-inset-bottom));
  right: 16px;
  left: auto;
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.whatsapp-float--pwa .whatsapp-float__ring {
  border-radius: 999px;
}

.whatsapp-float__label {
  line-height: 1;
  white-space: nowrap;
}

/* =============================================
   CALCULADORA UPS — Didáctica · Mobile First
   ============================================= */

.calculator {
  padding: 40px 20px;
  max-width: 480px;
  margin: 0 auto;
  background: var(--color-surface-alt);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.calc-tip {
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-kaise);
  min-height: 0;
  margin-bottom: 8px;
  opacity: 0;
  transition: opacity 0.3s;
}

.calc-tip--visible {
  opacity: 1;
  min-height: 1.5em;
}

.calc-steps {
  display: flex;
  gap: 6px;
  margin-bottom: 20px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.calc-step {
  flex: 1;
  min-width: 72px;
  text-align: center;
  font-size: 0.65rem;
  color: var(--color-text-muted);
  padding: 8px 4px;
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}

.calc-step span {
  display: block;
  font-size: 0.9rem;
  font-weight: 800;
  margin-bottom: 2px;
}

.calc-step--active {
  border-color: var(--color-primary);
  color: var(--color-text);
  background: rgba(var(--color-primary-rgb), 0.08);
}

.calc-step--done {
  border-color: var(--color-whatsapp);
  color: var(--color-whatsapp);
}

.calc-body {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
}

.calc-panel {
  display: none;
}

.calc-panel--active {
  display: block;
}

.calc-info {
  margin-bottom: 16px;
}

.calc-info strong {
  display: block;
  font-size: 1rem;
  margin-bottom: 6px;
}

.calc-info p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.calc-hint {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin: 12px 0 16px;
  text-align: center;
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 8px;
}

.scenario-btn {
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 16px 12px;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}

.scenario-btn--active {
  border-color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.06);
}

.scenario-preview {
  margin: 16px 0;
  padding: 14px;
  background: rgba(var(--color-primary-rgb), 0.06);
  border: 1px solid rgba(var(--color-primary-rgb), 0.2);
  border-radius: var(--radius-sm);
}

.scenario-preview.hidden {
  display: none;
}

.scenario-preview__title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.scenario-preview__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.scenario-preview__list li {
  font-size: 0.82rem;
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding: 6px 0;
  border-bottom: 1px solid var(--color-border);
}

.scenario-preview__list li:last-child {
  border-bottom: none;
}

.scenario-preview__list span {
  font-weight: 600;
  color: var(--color-primary);
}

.calc-step {
  cursor: pointer;
}

.calc-body {
  padding-bottom: 8px;
}

.load-live-box strong {
  color: var(--color-primary);
  font-size: 1.1rem;
}

.device-presets {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 20px;
}

.device-presets__hint {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  background: var(--color-surface);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  margin: 0;
  line-height: 1.5;
}

.device-group__title {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.device-group__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.device-btn {
  font-family: var(--font);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  padding: 12px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  cursor: pointer;
  text-align: left;
}

.device-btn:active {
  border-color: var(--color-primary);
}

.device-btn__icon {
  font-size: 1.2rem;
}

.device-btn__name {
  font-size: 0.78rem;
  font-weight: 600;
  line-height: 1.3;
}

.device-btn__w {
  font-size: 0.7rem;
  color: var(--color-primary);
  font-weight: 700;
}

.device-btn__note {
  font-size: 0.62rem;
  color: var(--color-text-muted);
  line-height: 1.3;
}

.cart-section {
  margin-bottom: 16px;
}

.cart-title {
  font-size: 0.9rem;
  margin-bottom: 10px;
}

.cart-empty {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  padding: 16px;
  text-align: center;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-sm);
}

.cart-empty.hidden {
  display: none;
}

.cart-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.cart-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--color-surface);
  border-radius: var(--radius-sm);
}

.cart-item__icon {
  font-size: 1.2rem;
}

.cart-item__info {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.cart-item__name {
  font-size: 0.85rem;
  font-weight: 600;
}

.cart-item__detail {
  font-size: 0.72rem;
  color: var(--color-text-muted);
}

.cart-item__actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.cart-remove {
  width: 28px;
  height: 28px;
  margin-left: 2px;
  border: none;
  background: transparent;
  color: var(--color-accent);
  font-size: 0.85rem;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  border-radius: 6px;
}

.cart-remove:hover,
.cart-remove:active {
  background: rgba(169, 7, 7, 0.1);
}

.cart-qty {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  border: 1px solid var(--color-border);
  background: var(--color-card);
  color: var(--color-text);
  font-size: 1rem;
  cursor: pointer;
}

.cart-item__qty {
  font-weight: 700;
  min-width: 20px;
  text-align: center;
}

.calc-learn details {
  margin-bottom: 16px;
  font-size: 0.82rem;
}

.calc-learn summary {
  cursor: pointer;
  color: var(--color-primary);
  font-weight: 600;
  padding: 8px 0;
}

.calc-learn p {
  color: var(--color-text-muted);
  padding: 8px 0;
  line-height: 1.6;
}

.calc-clear {
  display: block;
  width: 100%;
  margin-bottom: 14px;
  padding: 10px;
  font-family: var(--font);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-kaise);
  background: rgba(var(--color-kaise-rgb), 0.06);
  border: 1px dashed rgba(var(--color-kaise-rgb), 0.35);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.2s;
}

.calc-clear:active {
  background: rgba(var(--color-kaise-rgb), 0.12);
}

.calc-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: stretch;
}

.calc-nav .btn {
  flex: 1 1 0;
  min-width: 0;
  min-height: 44px;
  padding: 10px 14px;
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
}

.btn--clear-sm {
  color: var(--color-kaise);
  border-color: rgba(var(--color-kaise-rgb), 0.35);
}

.calc-nav--step3 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.calc-nav--step3 .btn {
  flex: none;
  width: 100%;
}

.calc-nav--step3 .calc-nav__cta {
  grid-column: 1 / -1;
  min-height: 48px;
  padding: 12px 20px;
  font-size: 0.9375rem;
  margin-top: 2px;
}

@media (max-width: 480px) {
  .calc-nav .btn {
    font-size: 0.8125rem;
    padding: 10px 12px;
  }
}

@media (max-width: 380px) {
  .calc-nav:not(.calc-nav--step3):has(.btn:nth-child(3)) {
    flex-direction: column;
  }

  .calc-nav:not(.calc-nav--step3):has(.btn:nth-child(3)) .btn {
    width: 100%;
    flex: 1 1 auto;
  }
}

.backup-control {
  margin-bottom: 20px;
}

.backup-control label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.backup-stepper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 6px;
}

.backup-value-wrap {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.backup-input {
  width: 88px;
  font-family: var(--font);
  font-size: 2rem;
  font-weight: 800;
  text-align: center;
  color: var(--color-primary);
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 8px 4px;
  -moz-appearance: textfield;
}

.backup-input::-webkit-outer-spin-button,
.backup-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.backup-input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.backup-unit {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.backup-arrow {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-sm);
  background: var(--color-card);
  color: var(--color-primary);
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
}

.backup-arrow:active {
  background: var(--color-surface);
}

.backup-hint {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  text-align: center;
  margin: 0 0 8px;
}

.backup-live-preview {
  font-size: 0.78rem;
  line-height: 1.45;
  text-align: center;
  color: var(--color-primary);
  background: rgba(12, 77, 162, 0.06);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  margin: 0 0 12px;
}

.backup-live-preview--warn {
  color: var(--color-kaise);
  background: rgba(169, 7, 7, 0.08);
}

.load-live-box {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  font-size: 0.85rem;
}

.load-live-box--cart {
  margin-top: 12px;
  margin-bottom: 0;
}

@media (max-width: 640px) {
  .load-live-box--cart:not([hidden]) {
    position: sticky;
    bottom: 0;
    z-index: 2;
    box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.08);
  }
}

#backup-slider {
  width: 100%;
  accent-color: var(--color-primary);
}

.backup-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.72rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

.load-model-preview {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-primary);
  background: rgba(12, 77, 162, 0.06);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  margin: -8px 0 16px;
}

.load-model-preview--warn {
  color: var(--color-kaise);
  background: rgba(169, 7, 7, 0.08);
}

.load-model-preview.hidden {
  display: none;
}

.calc-advice {
  font-size: 0.78rem;
  line-height: 1.45;
  color: var(--color-kaise);
  background: rgba(169, 7, 7, 0.06);
  border-left: 3px solid var(--color-kaise);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 10px 12px;
  margin: 0 0 12px;
}

.calc-advice.hidden {
  display: none;
}

.calc-advice p {
  margin: 0 0 6px;
}

.calc-advice p:last-child {
  margin-bottom: 0;
}

.calc-advice__apply {
  margin-top: 10px;
  width: 100%;
  font-size: 0.75rem;
  padding: 8px 12px;
}

.result-card__source {
  font-size: 0.68rem;
  color: var(--color-text-muted);
  margin: 4px 0 0;
}

.result-advice {
  font-size: 0.82rem;
  line-height: 1.45;
  padding: 12px;
  background: rgba(12, 77, 162, 0.06);
  border-radius: var(--radius-sm);
}

.result-advice p {
  margin: 0 0 6px;
}

.result-alert--soft {
  background: rgba(12, 77, 162, 0.08);
  border-color: rgba(12, 77, 162, 0.2);
  color: var(--color-primary);
}

.result-gauge__fill--ideal {
  background: var(--color-whatsapp);
}

.result-gauge__fill--high {
  background: var(--color-kaise);
}

.voltage-field {
  border: none;
  margin-bottom: 16px;
}

.voltage-field legend {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.voltage-co-hint,
.voltage-co-typical {
  font-size: 0.78rem;
  line-height: 1.45;
  margin: 0 0 8px;
}

.voltage-co-hint {
  color: var(--color-text-muted);
}

.voltage-co-typical {
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: 12px;
}

.result-card__voltage {
  font-size: 0.78rem;
  color: var(--color-primary);
  font-weight: 600;
  margin: 4px 0 0;
}

.critical-field {
  border: none;
  margin-bottom: 16px;
}

.critical-field legend {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.critical-hint {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

.radio-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px;
  margin-bottom: 8px;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.85rem;
}

.radio-card:has(input:checked) {
  border-color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.06);
}

.radio-card input {
  accent-color: var(--color-primary);
}

.radio-card--check:has(input:checked) {
  border-color: var(--color-kaise);
  background: rgba(var(--color-kaise-rgb), 0.06);
}

.battery-bank-section {
  margin-bottom: 16px;
}

.battery-bank-section.hidden {
  display: none;
}

.battery-bank-field {
  border: none;
  padding: 0;
  margin: 0;
}

.battery-bank-field legend {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.battery-bank-intro {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin: 0 0 12px;
  line-height: 1.45;
}

.battery-bank-controls {
  margin-top: 12px;
  padding: 14px;
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.battery-bank-controls.hidden {
  display: none;
}

.battery-bank-controls label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.battery-bank-stepper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 10px;
}

.backup-input--sm {
  width: 64px;
  font-size: 1.5rem;
  padding: 6px 4px;
}

.battery-bank-preview {
  font-size: 0.78rem;
  line-height: 1.45;
  text-align: center;
  color: var(--color-kaise);
  background: rgba(169, 7, 7, 0.08);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  margin: 0;
}

.battery-bank-preview--ok {
  color: var(--color-primary);
  background: rgba(12, 77, 162, 0.06);
}

/* Resultados */
.result-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.result-card__header {
  text-align: center;
}

.result-card__badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.08);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 8px;
}

.result-card__model {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
}

.result-card__use {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.result-gauge__label {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  margin-bottom: 6px;
}

.result-gauge__bar {
  height: 10px;
  background: var(--color-surface);
  border-radius: 999px;
  overflow: hidden;
}

.result-gauge__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  border-radius: 999px;
  transition: width 0.5s ease;
}

.result-gauge__hint {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  margin-top: 6px;
}

.result-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.result-stat {
  padding: 12px;
  background: var(--color-surface);
  border-radius: var(--radius-sm);
}

.result-stat dt {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.result-stat dd {
  font-size: 0.95rem;
  font-weight: 700;
}

.result-learn {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  padding: 14px;
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-primary);
}

.result-learn ol {
  margin: 8px 0 8px 18px;
}

.result-learn li {
  margin-bottom: 4px;
}

.result-learn__note {
  margin-top: 8px;
  color: var(--color-text);
}

.result-alert {
  font-size: 0.85rem;
  padding: 12px;
  background: rgba(var(--color-kaise-rgb), 0.08);
  border: 1px solid rgba(var(--color-kaise-rgb), 0.25);
  border-radius: var(--radius-sm);
  color: var(--color-kaise);
}

.result-ok {
  font-size: 0.85rem;
  padding: 12px;
  background: rgba(37, 211, 102, 0.1);
  border: 1px solid rgba(37, 211, 102, 0.3);
  border-radius: var(--radius-sm);
  color: var(--color-whatsapp);
}

.result-disclaimer {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  text-align: center;
}

.result-wa-preview {
  margin-top: 8px;
  padding: 14px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.result-wa-preview__title {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.result-wa-preview__text {
  font-family: ui-monospace, 'Cascadia Code', 'Consolas', monospace;
  font-size: 0.72rem;
  line-height: 1.55;
  color: var(--color-text-medium);
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 220px;
  overflow-y: auto;
}

.result-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 8px;
}

.result-card .btn {
  margin-top: 0;
}

/* ---- Tablet+ (optional enhancement) ---- */
@media (min-width: 600px) {
  .hero__title {
    font-size: 2.2rem;
  }

  .hero__actions {
    flex-direction: row;
    justify-content: center;
  }

  .services__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
  }

  .header__inner,
  .hero,
  .calculator,
  .catalog,
  .brand,
  .products,
  .batteries,
  .sectors,
  .services,
  .process,
  .trust,
  .contact {
    max-width: 720px;
  }

  .sectors__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 900px) {
  .services__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .header__inner,
  .hero,
  .calculator,
  .catalog,
  .brand,
  .products,
  .batteries,
  .sectors,
  .services,
  .process,
  .trust,
  .contact {
    max-width: 960px;
  }

  .sectors__grid {
    grid-template-columns: repeat(6, 1fr);
  }
}