/* ==========================================================================
   Clockwork Ops — estilos base
   Metáfora: relojería suiza de precisión. Latón envejecido + acero frío
   sobre negro casi puro. Serif editorial para manifiesto, grotesk para UI,
   mono para cifras y precios.
   ========================================================================== */

:root {
  /* Paleta */
  --dark: #0A0A0B;
  --dark-alt: #131315;
  --dark-card: #17171A;
  --line: rgba(245, 243, 239, 0.08);
  --line-strong: rgba(245, 243, 239, 0.16);

  --off-white: #F5F3EF;
  --text-muted: #9B968D;
  --text-faint: #706C64;

  --brass: #C9A96E;
  --brass-light: #E3CDA0;
  --brass-dim: rgba(201, 169, 110, 0.14);

  --steel: #5C7A8A;
  --steel-light: #8CA8B5;

  --success: #7FA787;
  --danger: #C97A6E;

  /* Tipografía */
  --font-serif: 'Fraunces', 'Iowan Old Style', serif;
  --font-body: 'Manrope', -apple-system, sans-serif;
  --font-ui: 'Space Grotesk', 'Manrope', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', monospace;

  /* Ritmo */
  --gap-xs: 0.5rem;
  --gap-sm: 1rem;
  --gap-md: 2rem;
  --gap-lg: 4rem;
  --gap-xl: 7rem;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --header-h: 76px;
}

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

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

/* Los saltos de ancla no deben quedar tapados por el header fijo */
[id] {
  scroll-margin-top: calc(var(--header-h) + 20px);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  background: var(--dark);
  color: var(--off-white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg, canvas { max-width: 100%; display: block; }

a { color: inherit; }

h1, h2, h3, h4 { font-family: var(--font-serif); font-weight: 500; margin: 0; }

p { margin: 0; }

ul, ol { margin: 0; padding: 0; list-style: none; }

button { font-family: inherit; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.container--narrow { max-width: 840px; }

/* Skip link */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--brass);
  color: var(--dark);
  padding: 12px 20px;
  z-index: 999;
  font-family: var(--font-ui);
  font-weight: 600;
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus {
  left: 0;
}

/* Focus visibility (WCAG 2.2) */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--brass-light);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Partículas doradas ambientales (js/particles.js). z-index:0 a propósito:
   empata con .hero__scene y .cine__media (también 0), y al estar declarado
   ANTES en el DOM, el desempate por orden de árbol hace que vídeo/escena
   pinten encima y tapen las partículas ahí — sin tocar ningún z-index
   existente. En el resto de secciones (fondo no posicionado) las partículas
   quedan por encima, visibles. */
#particlesCanvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* Progress bar */
.progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--steel), var(--brass));
  z-index: 1000;
  transition: width 0.1s linear;
}

/* ==========================================================================
   Header / Nav
   ========================================================================== */

.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 900;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: transparent;
  transition: background 0.3s var(--ease-out), border-color 0.3s var(--ease-out), backdrop-filter 0.3s var(--ease-out);
  border-bottom: 1px solid transparent;
}

.site-header.scrolled {
  background: rgba(10, 10, 11, 0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}

.nav {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--off-white);
}

.nav__mark {
  color: var(--brass);
  font-size: 1.3rem;
  line-height: 1;
}

.nav__name {
  font-family: var(--font-ui);
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  font-weight: 600;
}
.nav__name em {
  font-style: normal;
  color: var(--brass-light);
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: var(--gap-md);
}

.nav__menu a {
  text-decoration: none;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color 0.2s;
  min-height: 44px;
  display: flex;
  align-items: center;
}

.nav__menu a:hover { color: var(--off-white); }

.nav__cta {
  border: 1px solid var(--brass);
  padding: 8px 18px;
  border-radius: 999px;
  color: var(--brass-light) !important;
}
.nav__cta:hover {
  background: var(--brass);
  color: var(--dark) !important;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
}
.nav__toggle span {
  display: block;
  height: 2px;
  width: 24px;
  background: var(--off-white);
  margin: 0 auto;
  transition: transform 0.25s var(--ease-out), opacity 0.25s;
}
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--header-h);
}

.hero__scene {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 60% 50% at 75% 45%, rgba(92, 122, 138, 0.16), transparent 60%),
    radial-gradient(ellipse 50% 40% at 20% 70%, rgba(201, 169, 110, 0.10), transparent 60%),
    var(--dark);
}

.hero__video {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 1.4s var(--ease-out);
}
.hero__video.is-ready { opacity: 1; }

#gearCanvas {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1.2s var(--ease-out);
}
#gearCanvas.is-ready { opacity: 1; }

.hero__scene-fallback {
  position: absolute;
  inset: 0;
  z-index: 2;
  background-image:
    radial-gradient(circle at 78% 40%, rgba(201, 169, 110, 0.22), transparent 32%),
    radial-gradient(circle at 62% 62%, rgba(92, 122, 138, 0.18), transparent 28%);
  opacity: 1;
}
.hero__scene-fallback svg { position: absolute; }

.hero__veil {
  position: absolute;
  inset: 0;
  z-index: 3;
  background: linear-gradient(180deg, rgba(10,10,11,0.25) 0%, rgba(10,10,11,0.6) 55%, var(--dark) 100%);
}

.hero__content {
  position: relative;
  z-index: 4;
  max-width: 760px;
  padding: var(--gap-xl) 24px;
  margin: 0 auto;
  width: 100%;
}

.eyebrow {
  font-family: var(--font-ui);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.78rem;
  color: var(--brass-light);
  margin-bottom: var(--gap-sm);
}
.eyebrow--center { text-align: center; }

.hero__title {
  font-size: clamp(2.4rem, 6vw, 4.4rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--off-white);
}
.hero__title em {
  font-style: italic;
  color: var(--brass-light);
}

.hero__subtitle {
  margin-top: var(--gap-md);
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 560px;
}

.hero__actions {
  margin-top: var(--gap-lg);
  display: flex;
  gap: var(--gap-sm);
  flex-wrap: wrap;
}

.hero__scroll-cue {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 4;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: rgba(255,255,255,0.02);
  cursor: pointer;
}
.hero__scroll-cue span {
  position: absolute;
  top: 12px; left: 50%;
  width: 6px; height: 6px;
  margin-left: -3px;
  border-radius: 50%;
  background: var(--brass-light);
  animation: cue-bounce 1.8s ease-in-out infinite;
}
@keyframes cue-bounce {
  0%, 100% { transform: translateY(0); opacity: 1; }
  50% { transform: translateY(14px); opacity: 0.3; }
}
@media (prefers-reduced-motion: reduce) {
  .hero__scroll-cue span { animation: none; }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 28px;
  border-radius: 999px;
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out), background 0.2s, border-color 0.2s;
}
.btn--primary {
  background: linear-gradient(135deg, var(--brass-light), var(--brass));
  color: #211705;
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(201, 169, 110, 0.28);
}
.btn--ghost {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--off-white);
}
.btn--ghost:hover {
  border-color: var(--brass);
  color: var(--brass-light);
}
.btn--small { min-height: 40px; padding: 0 20px; font-size: 0.85rem; }
.btn--full { width: 100%; }
.btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none !important; }

/* ==========================================================================
   Sections generic
   ========================================================================== */

.section {
  position: relative;
  padding: var(--gap-xl) 0;
  border-top: 1px solid var(--line);
}

.section__title {
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  line-height: 1.2;
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--gap-md);
}

.section__lede {
  text-align: center;
  max-width: 620px;
  margin: 0 auto var(--gap-lg);
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* reveal-on-scroll baseline (JS toggles .is-visible; solo se oculta si hay JS activo) */
html.js .reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}
html.js .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  html.js .reveal { opacity: 1; transform: none; transition: none; }
}

/* ==========================================================================
   El problema — stat grid
   ========================================================================== */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gap-md);
}

.stat-card {
  background: var(--dark-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: var(--gap-md);
}

.stat-card__number {
  font-family: var(--font-mono);
  font-size: 2.6rem;
  color: var(--brass-light);
  margin: 0 0 var(--gap-sm);
  line-height: 1;
}
.stat-card__number--text {
  font-size: 1.6rem;
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--steel-light);
}

.stat-card__label {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

/* ==========================================================================
   Caso de estudio
   ========================================================================== */

.section--caso {
  background: var(--dark-alt);
}

.metric-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap-md) var(--gap-sm);
  margin: var(--gap-lg) 0;
  text-align: center;
}

/* Línea de latón que conecta las cifras, como un mecanismo que las engrana
   (geometría calculada en js/scroll-animations.js a partir de las posiciones
   reales de cada .metric). */
.metric-grid__connector {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  overflow: visible;
}
.metric-grid__connector path {
  fill: none;
  stroke: var(--brass);
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.55;
}

.metric {
  position: relative;
  z-index: 1;
}

.metric__value {
  font-family: var(--font-mono);
  font-size: 2.4rem;
  color: var(--off-white);
  background: linear-gradient(135deg, var(--brass-light), var(--steel-light));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.metric__label {
  margin-top: 6px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.pull-quote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.4rem;
  line-height: 1.5;
  color: var(--off-white);
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
  padding-top: var(--gap-md);
  border-top: 1px solid var(--line);
}

/* ==========================================================================
   Sistemas
   ========================================================================== */

.systems-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap-md);
}

.system-card {
  position: relative;
  background: linear-gradient(180deg, var(--dark-card), var(--dark-alt));
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: var(--gap-md);
  display: flex;
  flex-direction: column;
  transition: transform 0.25s var(--ease-out), border-color 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out);
}
.system-card:hover {
  transform: translateY(-6px);
  border-color: var(--brass);
  box-shadow: 0 20px 45px rgba(0,0,0,0.35);
}

/* Glow que sigue el cursor (--mx/--my los fija main.js en dispositivos con
   puntero preciso; sin JS o con prefers-reduced-motion se queda en 50%/50%,
   invisible por el opacity:0 hasta el :hover). */
.system-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(circle at var(--mx, 50%) var(--my, 50%), rgba(201, 169, 110, 0.18), transparent 55%);
  opacity: 0;
  transition: opacity 0.3s var(--ease-out);
  pointer-events: none;
}
.system-card:hover::before { opacity: 1; }

.system-card__head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 4px;
}
.system-card__gear {
  color: var(--brass);
  font-size: 1.2rem;
}
.system-card__name {
  font-family: var(--font-ui);
  font-size: 1.15rem;
  letter-spacing: 0.06em;
  color: var(--off-white);
}
.system-card__tagline {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--steel-light);
  margin-bottom: var(--gap-sm);
}
.system-card__desc {
  color: var(--text-muted);
  font-size: 0.94rem;
  flex-grow: 1;
  margin-bottom: var(--gap-md);
}
.system-card__includes {
  display: grid;
  gap: 6px;
  margin-bottom: var(--gap-sm);
}
.system-card__includes li {
  position: relative;
  padding-left: 18px;
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.4;
}
.system-card__includes li::before {
  content: "›";
  position: absolute;
  left: 2px;
  top: 0;
  color: var(--brass);
  font-family: var(--font-mono);
}
.system-card__price {
  font-family: var(--font-mono);
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: var(--gap-sm);
}
.price__setup { font-size: 1.25rem; color: var(--brass-light); }
.price__sep { color: var(--text-faint); }
.price__monthly { font-size: 0.9rem; color: var(--text-muted); }

.system-card__cta {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 44px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  text-decoration: none;
  font-family: var(--font-ui);
  font-size: 0.88rem;
  color: var(--off-white);
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.system-card__cta:hover {
  border-color: var(--brass);
  color: var(--brass-light);
}

.system-card--bundle {
  grid-column: span 3;
  flex-direction: row;
  align-items: center;
  gap: var(--gap-lg);
  border-color: var(--brass-dim);
  background: linear-gradient(120deg, rgba(201,169,110,0.10), var(--dark-card) 55%);
}
.system-card--bundle .system-card__head { margin-bottom: 0; }
.system-card--bundle .system-card__desc { margin-bottom: 0; }
.system-card__gear--bundle { letter-spacing: -6px; }
.system-card__cta--bundle {
  background: var(--brass);
  color: var(--dark);
  border-color: var(--brass);
  white-space: nowrap;
}

/* ==========================================================================
   El catálogo completo (21 packs: expansión + por sector)
   ========================================================================== */

.catalogo-completo__link-wrap {
  text-align: center;
  margin-top: var(--gap-lg);
}
.catalogo-completo__link {
  font-family: var(--font-ui);
  font-size: 0.92rem;
  color: var(--brass-light);
  text-decoration: none;
  border-bottom: 1px solid var(--brass-dim);
  padding-bottom: 2px;
  transition: border-color 0.2s, color 0.2s;
}
.catalogo-completo__link:hover {
  border-color: var(--brass);
  color: var(--off-white);
}

.catalogo-completo {
  padding-top: var(--gap-xl);
  margin-top: var(--gap-xl);
  border-top: 1px solid var(--line);
}
.catalogo-completo__title {
  font-size: clamp(1.6rem, 3.2vw, 2.2rem);
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--gap-md);
}

.catalogo-group {
  margin-top: var(--gap-lg);
}
.catalogo-group__title {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--brass-light);
  text-align: center;
  margin-bottom: var(--gap-md);
}
.catalogo-group__note {
  text-align: center;
  color: var(--text-faint);
  font-size: 0.85rem;
  margin-top: var(--gap-sm);
}

.catalogo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap-sm);
}

.mini-card {
  background: var(--dark-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: var(--gap-sm) var(--gap-md);
}
.mini-card__name {
  font-family: var(--font-ui);
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  color: var(--off-white);
  margin-bottom: 4px;
}
.mini-card__tagline {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--steel-light);
  font-size: 0.88rem;
  margin-bottom: 8px;
}
.mini-card__includes {
  color: var(--text-muted);
  font-size: 0.82rem;
  line-height: 1.5;
  margin-bottom: 10px;
}
.mini-card__includes strong {
  color: var(--text-faint);
  font-weight: 600;
}
.mini-card__price {
  font-family: var(--font-mono);
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 0.9rem;
}
.mini-card__price .price__setup { font-size: 1rem; }
.mini-card__note {
  margin-top: 6px;
  font-size: 0.76rem;
  color: var(--text-faint);
  font-family: var(--font-mono);
}

.catalogo-completo__cta {
  text-align: center;
  margin-top: var(--gap-lg);
}

/* ==========================================================================
   Calculadora ROI
   ========================================================================== */

.section--calc { background: var(--dark-alt); }

.calc {
  display: grid;
  gap: var(--gap-lg);
}

.calc__noscript-note {
  max-width: 620px;
  margin: -12px auto 0;
  text-align: center;
  color: var(--text-faint);
  font-size: 0.85rem;
}

/* Desktop ancho: sliders a la izquierda, instrumento (manómetro + resultados)
   a la derecha, pegado (sticky) para que quede siempre a la vista mientras
   se arrastran los controles. En móvil/tablet se mantiene el flujo apilado
   de siempre (sliders arriba, instrumento debajo). */
@media (min-width: 1024px) {
  .calc {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }
  .calc__sliders {
    grid-template-columns: 1fr;
  }
  .calc__instrument {
    position: sticky;
    top: calc(var(--header-h) + var(--gap-md));
    display: flex;
    flex-direction: column;
    gap: var(--gap-md);
  }
  .gauge {
    max-width: 260px;
  }
}

/* Sliders custom (corona de reloj: thumb latón + anillo, track con relleno
   degradado hasta el valor actual vía la variable --fill que fija el JS). */
.calc__sliders {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gap-md);
}

.slider-field {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--dark-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: var(--gap-sm) var(--gap-md);
}
.slider-field--highlight {
  border-color: var(--brass-dim);
  background: linear-gradient(180deg, rgba(201, 169, 110, 0.10), var(--dark-card));
}

.slider-field__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--gap-sm);
}
.slider-field__head label {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--text-muted);
}
.slider-field__value {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  color: var(--brass-light);
  min-width: 2.5em;
  text-align: right;
}

input[type="range"].slider {
  --fill: 0%;
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 44px;
  margin: 0;
  background: transparent;
  cursor: pointer;
}
input[type="range"].slider::-webkit-slider-runnable-track {
  height: 4px;
  border-radius: 2px;
  background: linear-gradient(to right, var(--brass) var(--fill), var(--line-strong) var(--fill));
}
input[type="range"].slider::-moz-range-track {
  height: 4px;
  border-radius: 2px;
  background: var(--line-strong);
}
input[type="range"].slider::-moz-range-progress {
  height: 4px;
  border-radius: 2px;
  background: linear-gradient(to right, var(--brass), var(--brass-light));
}
input[type="range"].slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 24px;
  height: 24px;
  margin-top: -10px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, var(--brass-light), var(--brass) 65%, #8A6D3A 100%);
  border: 2px solid var(--dark);
  box-shadow: 0 0 0 2px var(--brass-dim), 0 2px 6px rgba(0, 0, 0, 0.4);
  transition: transform 0.15s var(--ease-out), box-shadow 0.15s var(--ease-out);
}
input[type="range"].slider::-moz-range-thumb {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, var(--brass-light), var(--brass) 65%, #8A6D3A 100%);
  border: 2px solid var(--dark);
  box-shadow: 0 0 0 2px var(--brass-dim), 0 2px 6px rgba(0, 0, 0, 0.4);
  transition: transform 0.15s var(--ease-out), box-shadow 0.15s var(--ease-out);
}
input[type="range"].slider:hover::-webkit-slider-thumb,
input[type="range"].slider:focus-visible::-webkit-slider-thumb {
  transform: scale(1.15);
  box-shadow: 0 0 0 5px var(--brass-dim), 0 2px 10px rgba(0, 0, 0, 0.5);
}
input[type="range"].slider:hover::-moz-range-thumb,
input[type="range"].slider:focus-visible::-moz-range-thumb {
  transform: scale(1.15);
  box-shadow: 0 0 0 5px var(--brass-dim), 0 2px 10px rgba(0, 0, 0, 0.5);
}

/* Medidor semicircular (manómetro de relojería) */
.calc__gauge {
  text-align: center;
  padding: var(--gap-sm) 0 0;
}
.gauge {
  width: 100%;
  max-width: 320px;
  margin: 0 auto;
  overflow: visible;
}
.gauge__track {
  fill: none;
  stroke: var(--line-strong);
  stroke-width: 14;
  stroke-linecap: round;
}
.gauge__fill {
  fill: none;
  stroke: url(#gaugeGradient);
  stroke-width: 14;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.5s var(--ease-out);
}
.gauge__ticks line {
  stroke: var(--text-faint);
  stroke-width: 2;
}
.gauge__needle {
  transition: transform 0.5s var(--ease-out);
}
.gauge__needle line {
  stroke: var(--brass-light);
  stroke-width: 3;
  stroke-linecap: round;
}
.gauge__needle circle {
  fill: var(--brass);
  stroke: var(--dark);
  stroke-width: 2;
}
.calc__gauge-value {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  color: var(--brass-light);
  margin-top: -8px;
}
.calc__gauge-caption {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-top: 4px;
}
.calc__gauge-micro {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--steel-light);
  margin-top: var(--gap-xs);
  font-size: 1.05rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.field--full { grid-column: 1 / -1; }

.field label {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: var(--text-muted);
}

.field input,
.field textarea {
  background: var(--dark-card);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  color: var(--off-white);
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 1rem;
  min-height: 48px;
  transition: border-color 0.2s;
}
.field textarea {
  font-family: var(--font-body);
  resize: vertical;
  min-height: 96px;
}
.field input:focus,
.field textarea:focus {
  border-color: var(--brass);
  outline: none;
  box-shadow: 0 0 0 4px var(--brass-dim);
}

.calc__output {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap-md);
}

.calc__result {
  background: var(--dark-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: var(--gap-md);
  text-align: center;
}
.calc__result--savings {
  border-color: var(--brass-dim);
  background: linear-gradient(180deg, rgba(201,169,110,0.08), var(--dark-card));
}
.calc__result-label {
  font-family: var(--font-ui);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}
.calc__result-value {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  color: var(--off-white);
}
.calc__result-value--accent { color: var(--brass-light); }
.calc__result-bar {
  margin-top: 12px;
  height: 6px;
  border-radius: 999px;
  background: var(--line);
  overflow: hidden;
}
.calc__result-bar-fill {
  display: block;
  height: 100%;
  border-radius: 999px;
  transition: width 0.5s var(--ease-out);
}
.calc__result-bar-fill--problem { background: linear-gradient(90deg, var(--steel), var(--danger)); }
.calc__result-bar-fill--system { background: var(--steel-light); }
.calc__result-bar-fill--savings { background: linear-gradient(90deg, var(--brass), var(--brass-light)); }
.calc__result-breakdown {
  margin-top: 8px;
  font-size: 0.78rem;
  color: var(--text-faint);
  font-family: var(--font-mono);
}

/* ==========================================================================
   Soberanía
   ========================================================================== */

.check-list {
  display: grid;
  gap: var(--gap-sm);
}
.check-list li {
  position: relative;
  padding-left: 32px;
  color: var(--text-muted);
}
.check-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 4px;
  width: 18px; height: 18px;
  border-radius: 50%;
  border: 1px solid var(--brass);
  background: var(--brass-dim);
}
.check-list li::after {
  content: "";
  position: absolute;
  left: 6px; top: 9px;
  width: 8px; height: 4px;
  border-left: 2px solid var(--brass-light);
  border-bottom: 2px solid var(--brass-light);
  transform: rotate(-45deg);
}

/* ==========================================================================
   Método / steps
   ========================================================================== */

.section--metodo { background: var(--dark-alt); }

.steps-wrap {
  position: relative;
}

/* Línea de latón que conecta los 3 pasos (geometría calculada en
   js/scroll-animations.js). Sin sentido en el layout apilado de móvil. */
.steps__connector {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  overflow: visible;
}
.steps__connector path {
  fill: none;
  stroke: var(--brass);
  stroke-width: 1.5;
  stroke-linecap: round;
  opacity: 0.5;
}
@media (max-width: 768px) {
  .steps__connector { display: none; }
}

.steps {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap-lg);
  counter-reset: step;
}

.steps__item {
  text-align: center;
  padding: 0 var(--gap-sm);
}
.steps__number {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--brass);
  margin-bottom: var(--gap-sm);
  letter-spacing: 0.1em;
}
/* Al entrar en viewport, .steps__item ya recibe .is-visible del reveal
   genérico (main.js); aprovechamos esa misma clase para además girar el
   número del paso (90°→0 con fade), sin JS nuevo para este detalle. */
html.js .steps__number {
  transform: rotate(90deg);
  opacity: 0;
  transition: transform 0.6s var(--ease-out), opacity 0.6s var(--ease-out);
}
html.js .steps__item.is-visible .steps__number {
  transform: rotate(0deg);
  opacity: 1;
}
.steps__title {
  font-size: 1.4rem;
  margin-bottom: var(--gap-xs);
}
.steps__desc {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ==========================================================================
   Auditoría / formulario final
   ========================================================================== */

.audit-form {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gap-md);
}

.form-status {
  grid-column: 1 / -1;
  min-height: 24px;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  text-align: center;
}
.form-status[data-state="success"] { color: var(--success); }
.form-status[data-state="error"] { color: var(--danger); }

/* Sello ⚙ que se estampa sobre el mensaje de confirmación al enviar con éxito. */
.form-status__stamp {
  display: inline-block;
  margin-right: 8px;
  font-size: 1.3em;
  color: var(--brass);
  animation: stamp-hit 0.55s var(--ease-out) both;
}
@keyframes stamp-hit {
  0% { transform: scale(2.4) rotate(-14deg); opacity: 0; }
  60% { transform: scale(0.9) rotate(4deg); opacity: 1; }
  100% { transform: scale(1) rotate(0deg); opacity: 1; }
}

/* Reveal palabra a palabra del titular del CTA final (js/scroll-animations.js).
   Sin JS el <h2> nunca lleva estas spans y se ve como texto normal. */
.word-reveal__word {
  display: inline-block;
  overflow: hidden;
  vertical-align: top;
}
.word-reveal__inner {
  display: inline-block;
}
html.js .word-reveal__inner {
  transform: translateY(110%);
  transition: transform 0.6s var(--ease-out);
}
html.js .word-reveal__word.is-visible .word-reveal__inner {
  transform: translateY(0);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  border-top: 1px solid var(--line);
  padding: var(--gap-lg) 0 var(--gap-md);
  background: var(--dark);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--gap-md);
}

.footer__brand { display: flex; flex-direction: column; gap: 6px; }
.footer__tagline { color: var(--text-muted); font-size: 0.88rem; margin-top: 6px; }

.footer__col h4 {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: var(--gap-sm);
}
.footer__col ul { display: grid; gap: 10px; }
.footer__col a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.92rem;
}
.footer__col a:hover { color: var(--brass-light); }
.footer__col--contact { display: flex; flex-direction: column; gap: var(--gap-sm); align-items: flex-start; }
.footer__col--contact p { color: var(--text-faint); font-size: 0.85rem; min-height: 1em; }

.footer__bottom {
  margin-top: var(--gap-lg);
  padding-top: var(--gap-md);
  border-top: 1px solid var(--line);
  color: var(--text-faint);
  font-size: 0.82rem;
}

/* ==========================================================================
   Legal pages (privacidad / aviso-legal)
   ========================================================================== */

.legal {
  padding: calc(var(--header-h) + var(--gap-lg)) 0 var(--gap-xl);
}
.legal h1 { font-size: 2.2rem; margin-bottom: var(--gap-md); }
.legal h2 { font-size: 1.3rem; margin: var(--gap-md) 0 var(--gap-sm); color: var(--brass-light); }
.legal p, .legal li { color: var(--text-muted); font-size: 0.98rem; margin-bottom: var(--gap-xs); }
.legal ul { list-style: disc; padding-left: 1.4em; }

/* ==========================================================================
   Capítulos cinemáticos (.cine)
   ==========================================================================
   Estructura: .cine > .cine__pin > (.cine__media[video+poster] + .cine__overlay + .cine__content)
   Por defecto (sin JS, móvil, prefers-reduced-motion o save-data) el capítulo
   es una sección normal: el <video> nunca recibe src (solo data-src) y su
   atributo poster real hace de fondo estático — la experiencia es completa
   sin vídeo. Solo cuando <html> lleva la clase .cine-active (añadida de forma
   síncrona en el <head>, ver index.html) el capítulo pasa a pin fijo (100vh,
   position: sticky) y js/cinematic.js anima los pasos con GSAP ScrollTrigger. */

.section.cine {
  padding: 0;
}

.cine__pin {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 60vh;
  padding: var(--gap-xl) 0;
  overflow: hidden;
}

.cine__media {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: var(--dark);
}

.cine__video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 1s var(--ease-out);
}
.cine__media.is-playing .cine__video { opacity: 1; }

.cine__overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    180deg,
    rgba(10, 10, 11, 0.94) 0%,
    rgba(10, 10, 11, 0.58) 14%,
    rgba(10, 10, 11, 0.62) 86%,
    rgba(10, 10, 11, 0.96) 100%
  );
}

.cine__content {
  position: relative;
  z-index: 2;
  width: 100%;
  padding: var(--gap-lg) 24px;
}
.cine__content .section__title,
.cine__content .section__lede,
.cine__content .eyebrow--center {
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.55);
}

.section--sistemas > .container {
  margin-top: var(--gap-lg);
}

/* Modo cinemático activo: pin fijo a pantalla completa. */
html.cine-active .section--problema.cine { --cine-vh: 220; }
html.cine-active .section--promesa.cine { --cine-vh: 150; }
html.cine-active .section--soberania.cine { --cine-vh: 200; }

html.cine-active .cine {
  min-height: calc(var(--cine-vh, 200) * 1vh);
}
html.cine-active .cine__pin {
  position: sticky;
  top: 0;
  height: 100vh;
  min-height: 0;
  padding: 0;
}
html.cine-active .cine__content {
  padding: 0 24px;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1024px) {
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .systems-grid { grid-template-columns: repeat(2, 1fr); }
  .system-card--bundle { grid-column: span 2; }
  .catalogo-grid { grid-template-columns: repeat(2, 1fr); }
  .metric-grid { grid-template-columns: repeat(3, 1fr); }
  .footer__grid { grid-template-columns: 1.2fr 1fr 1fr; }
  .footer__col--contact { grid-column: span 1; }
}

@media (max-width: 768px) {
  :root { --gap-xl: 4.5rem; --gap-lg: 2.5rem; }

  .nav__menu {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(10,10,11,0.98);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s var(--ease-out);
  }
  .nav__menu.is-open { max-height: 420px; }
  .nav__menu li { border-bottom: 1px solid var(--line); }
  .nav__menu a { padding: 14px 24px; width: 100%; }
  .nav__cta { margin: 14px 24px; border-radius: 999px; text-align: center; justify-content: center; }
  .nav__toggle { display: flex; }

  .stat-grid { grid-template-columns: 1fr; }
  .systems-grid { grid-template-columns: 1fr; }
  .system-card--bundle { grid-column: span 1; flex-direction: column; align-items: stretch; text-align: left; }
  .catalogo-grid { grid-template-columns: 1fr; }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: 1fr; gap: var(--gap-md); }
  .calc__sliders { grid-template-columns: 1fr; }
  .calc__output { grid-template-columns: 1fr; }
  .audit-form { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: span 2; }
}

@media (max-width: 480px) {
  .metric-grid { grid-template-columns: 1fr 1fr; }
  .footer__grid { grid-template-columns: 1fr; }
  .footer__brand { grid-column: span 1; }
}

/* Desglose del ahorro del bundle: deja claro que 1.200 €/mes es un descuento
   sobre la suma de los 4 packs (1.380 €/mes), no una errata de cálculo. */
.system-card__bundle-saving {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--text-muted);
  margin: 0 0 var(--gap-sm);
}
.system-card__bundle-saving s { color: var(--text-faint); }
.system-card__bundle-saving strong { color: var(--brass-light); font-weight: 600; }