/* ============================================================
   ZEUS ELECTRICIDAD — Hoja de Estilos Principal
   Versión: 1.0.0
   Autor: Zeus Electricidad
   ============================================================ */

/* ── Variables de diseño ─────────────────────────────────── */
:root {
  --color-primary:     #00AEEF;
  --color-primary-dk:  #0090C8;
  --color-primary-lt:  #E6F7FD;
  --color-accent:      #FFD700;
  --color-dark:        #0D1B2A;
  --color-dark-2:      #1A2E44;
  --color-text:        #2C3E50;
  --color-text-muted:  #6B7C8D;
  --color-surface:     #F5F8FA;
  --color-white:       #FFFFFF;
  --color-border:      #DCE8F0;
  --color-success:     #27AE60;
  --color-error:       #E74C3C;

  --font-display: 'Montserrat', sans-serif;
  --font-body:    'Inter', sans-serif;

  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-xl:  32px;

  --shadow-sm:  0 2px 8px rgba(0,174,239,.10);
  --shadow-md:  0 8px 28px rgba(0,174,239,.15);
  --shadow-lg:  0 20px 60px rgba(0,174,239,.20);

  --transition: 0.28s cubic-bezier(.4,0,.2,1);
  --container:  1200px;
  --gap:        2rem;
}

/* ── Reset & Base ────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-white);
  overflow-x: hidden;
}

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

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

ul { list-style: none; }

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* Focus visible accesible */
:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ── Utilidades ──────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-label {
  display: inline-block;
  font-family: var(--font-display);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: .75rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--color-dark);
}

.section-title span { color: var(--color-primary); }

.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 640px;
  margin-top: .75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .85rem 1.75rem;
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-size: .9rem;
  font-weight: 700;
  letter-spacing: .02em;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 4px 20px rgba(0,174,239,.35);
}

.btn-primary:hover {
  background: var(--color-primary-dk);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0,174,239,.45);
}

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

.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn-accent {
  background: var(--color-accent);
  color: var(--color-dark);
  box-shadow: 0 4px 20px rgba(255,215,0,.35);
}

.btn-accent:hover {
  background: #e6c200;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(255,215,0,.45);
}

/* ── Reduce motion ───────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
  html { scroll-behavior: auto; }
}

/* ── HEADER / NAV ────────────────────────────────────────── */
#header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}

#header.scrolled {
  border-color: var(--color-border);
  box-shadow: 0 4px 24px rgba(0,0,0,.08);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 1.5rem;
}

.nav-logo img {
  height: 44px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  font-family: var(--font-display);
  font-size: .85rem;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: .03em;
  transition: color var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0; right: 0;
  height: 2px;
  background: var(--color-primary);
  transform: scaleX(0);
  transition: transform var(--transition);
  border-radius: 2px;
}

.nav-links a:hover { color: var(--color-primary); }
.nav-links a:hover::after { transform: scaleX(1); }

.nav-cta { margin-left: .5rem; }

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
}

.hamburger span {
  display: block;
  height: 2px;
  background: var(--color-dark);
  border-radius: 2px;
  transition: all var(--transition);
}

.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav { display: none; }

/* ── HERO ────────────────────────────────────────────────── */
#hero {
  min-height: 100svh;
  background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-2) 60%, #0a2540 100%);
  display: flex;
  align-items: center;
  padding: 100px 0 60px;
  position: relative;
  overflow: hidden;
}

/* Patrón de circuito eléctrico de fondo */
#hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(0,174,239,.12) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(0,174,239,.08) 0%, transparent 40%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-whatsapp {
  display: flex;
  width: fit-content;
  align-items: center;
  gap: .5rem;
  background: #25D366;
  border-radius: 100px;
  padding: .55rem 1.25rem;
  font-size: .85rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 1.25rem;
  transition: transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 14px rgba(37,211,102,.35);
}

.hero-whatsapp:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(37,211,102,.45);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: rgba(0,174,239,.15);
  border: 1px solid rgba(0,174,239,.3);
  border-radius: 100px;
  padding: .4rem 1rem;
  font-size: .78rem;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: .05em;
  margin-bottom: 1.25rem;
}

.hero-badge-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--color-primary);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .5; transform: scale(1.3); }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  font-weight: 900;
  line-height: 1.08;
  color: var(--color-white);
  margin-bottom: 1.25rem;
}

.hero-title .highlight {
  color: var(--color-primary);
  position: relative;
}

.hero-title .highlight-accent {
  color: var(--color-accent);
}

.hero-desc {
  font-size: 1.1rem;
  color: rgba(255,255,255,.7);
  max-width: 520px;
  margin-bottom: 2rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.hero-stats {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.hero-stat {
  display: flex;
  flex-direction: column;
}

.hero-stat-number {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--color-white);
  line-height: 1;
}

.hero-stat-number span { color: var(--color-primary); }

.hero-stat-label {
  font-size: .78rem;
  color: rgba(255,255,255,.5);
  letter-spacing: .04em;
  margin-top: .25rem;
}

/* Visual: medidor eléctrico animado */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.meter-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(0,174,239,.25);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  width: 340px;
  max-width: 100%;
  backdrop-filter: blur(8px);
  box-shadow: 0 32px 80px rgba(0,0,0,.4), 0 0 0 1px rgba(255,255,255,.05);
}

.meter-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.meter-logo {
  font-family: var(--font-display);
  font-size: .8rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: .1em;
}

.meter-status {
  display: flex;
  align-items: center;
  gap: .35rem;
  font-size: .72rem;
  color: var(--color-success);
  font-weight: 600;
}

.meter-status-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--color-success);
  animation: pulse-dot 1.5s infinite;
}

.meter-display {
  text-align: center;
  margin-bottom: 1.5rem;
}

.meter-label {
  font-size: .72rem;
  color: rgba(255,255,255,.45);
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: .5rem;
}

.meter-before {
  font-size: 1rem;
  color: rgba(255,255,255,.35);
  font-family: var(--font-display);
  font-weight: 700;
  text-decoration: line-through;
  margin-bottom: .25rem;
}

.meter-value {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 900;
  color: var(--color-white);
  line-height: 1;
  letter-spacing: -.02em;
}

.meter-value span {
  font-size: 1.5rem;
  color: var(--color-primary);
}

.meter-saving {
  display: inline-block;
  background: rgba(39,174,96,.15);
  border: 1px solid rgba(39,174,96,.3);
  color: #5de08a;
  font-size: .8rem;
  font-weight: 700;
  border-radius: 100px;
  padding: .3rem .9rem;
  margin-top: .5rem;
}

.meter-bar-wrap {
  margin-bottom: 1.5rem;
}

.meter-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: .72rem;
  color: rgba(255,255,255,.45);
  margin-bottom: .5rem;
}

.meter-bar-track {
  height: 8px;
  background: rgba(255,255,255,.1);
  border-radius: 100px;
  overflow: hidden;
}

.meter-bar-fill {
  height: 100%;
  border-radius: 100px;
  background: linear-gradient(90deg, var(--color-primary), #00d4ff);
  width: 35%;
  animation: bar-fill 2.5s ease forwards;
}

@keyframes bar-fill {
  from { width: 85%; }
  to   { width: 35%; }
}

.meter-items {
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

.meter-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: .8rem;
  color: rgba(255,255,255,.6);
  padding: .5rem .75rem;
  background: rgba(255,255,255,.04);
  border-radius: var(--radius-sm);
}

.meter-item-icon { color: var(--color-primary); font-size: .9rem; }

/* ── SCROLLING TICKER ────────────────────────────────────── */
.ticker-wrap {
  background: var(--color-primary);
  padding: .65rem 0;
  overflow: hidden;
  position: relative;
}

.ticker-track {
  display: flex;
  gap: 3rem;
  animation: ticker 22s linear infinite;
  width: max-content;
}

.ticker-track:hover { animation-play-state: paused; }

@keyframes ticker {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

.ticker-item {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-family: var(--font-display);
  font-size: .8rem;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: .05em;
  white-space: nowrap;
}

.ticker-sep { color: rgba(255,255,255,.4); }

/* ── SECCIÓN SERVICIOS ───────────────────────────────────── */
#servicios {
  padding: 6rem 0;
  background: var(--color-white);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 3.5rem;
}

.section-header .section-subtitle { margin: .75rem auto 0; }

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.service-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), #00d4ff);
  transform: scaleX(0);
  transition: transform var(--transition);
}

.service-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.service-card:hover::before { transform: scaleX(1); }

.service-icon {
  width: 52px; height: 52px;
  border-radius: var(--radius-md);
  background: var(--color-primary-lt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 1.25rem;
  transition: background var(--transition);
}

.service-card:hover .service-icon {
  background: var(--color-primary);
}

.service-card:hover .service-icon svg { color: white; }

.service-card h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: .5rem;
}

.service-card p {
  font-size: .9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ── SECCIÓN CÓMO FUNCIONA ───────────────────────────────── */
#como-funciona {
  padding: 6rem 0;
  background: var(--color-surface);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  position: relative;
}

/* Línea conectora */
.steps-grid::before {
  content: '';
  position: absolute;
  top: 52px;
  left: calc(12.5% + 26px);
  right: calc(12.5% + 26px);
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-dk));
  opacity: .25;
}

.step-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1rem;
}

.step-number {
  width: 52px; height: 52px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  font-family: var(--font-display);
  font-size: .85rem;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 4px 16px rgba(0,174,239,.35);
  position: relative;
  z-index: 1;
}

.step-card h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-dark);
}

.step-card p {
  font-size: .88rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ── SECCIÓN AHORRO ──────────────────────────────────────── */
#ahorro {
  padding: 6rem 0;
  background: var(--color-dark);
  position: relative;
  overflow: hidden;
}

#ahorro::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(0,174,239,.12) 0%, transparent 60%);
  pointer-events: none;
}

.savings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.savings-content .section-title { color: var(--color-white); }
.savings-content .section-subtitle { color: rgba(255,255,255,.6); }

.savings-list {
  display: flex;
  flex-direction: column;
  gap: .75rem;
  margin-top: 2rem;
}

.savings-list-item {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  font-size: .95rem;
  color: rgba(255,255,255,.8);
  line-height: 1.5;
}

.savings-list-item::before {
  content: '✓';
  flex-shrink: 0;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: rgba(0,174,239,.2);
  color: var(--color-primary);
  font-size: .75rem;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

.savings-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.savings-stat-card {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(0,174,239,.2);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  text-align: center;
  transition: all var(--transition);
}

.savings-stat-card:hover {
  background: rgba(0,174,239,.1);
  border-color: var(--color-primary);
  transform: translateY(-3px);
}

.savings-stat-card .number {
  font-family: var(--font-display);
  font-size: 2.75rem;
  font-weight: 900;
  color: var(--color-white);
  line-height: 1;
  margin-bottom: .5rem;
}

.savings-stat-card .number span { color: var(--color-primary); }

.savings-stat-card .stat-desc {
  font-size: .82rem;
  color: rgba(255,255,255,.5);
  line-height: 1.5;
}

.savings-stat-card.highlight {
  background: rgba(0,174,239,.12);
  border-color: rgba(0,174,239,.4);
  grid-column: 1 / -1;
}

.savings-stat-card.highlight .number { font-size: 3.5rem; color: var(--color-primary); }

/* ── TESTIMONIOS ─────────────────────────────────────────── */
#testimonios {
  padding: 6rem 0;
  background: var(--color-white);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.testimonial-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition);
}

.testimonial-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.testimonial-stars {
  color: var(--color-accent);
  font-size: 1rem;
  margin-bottom: 1rem;
  letter-spacing: .1em;
}

.testimonial-text {
  font-size: .95rem;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 1.5rem;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: .75rem;
}

.testimonial-avatar {
  width: 42px; height: 42px;
  border-radius: 50%;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: .85rem;
  font-weight: 800;
  color: var(--color-white);
  flex-shrink: 0;
}

.testimonial-name {
  font-family: var(--font-display);
  font-size: .88rem;
  font-weight: 700;
  color: var(--color-dark);
}

.testimonial-location {
  font-size: .78rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* ── SECCIÓN FORMULARIO ──────────────────────────────────── */
#contacto {
  padding: 6rem 0;
  background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-white) 100%);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 4rem;
  align-items: start;
}

.contact-info h2 { margin-bottom: 1rem; }

.contact-benefits {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-top: 2rem;
}

.contact-benefit {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.contact-benefit-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-primary-lt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-benefit-text h4 {
  font-family: var(--font-display);
  font-size: .9rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: .2rem;
}

.contact-benefit-text p {
  font-size: .83rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* Formulario */
.form-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
}

.form-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-dark);
  margin-bottom: .5rem;
}

.form-card .form-subtitle {
  font-size: .85rem;
  color: var(--color-text-muted);
  margin-bottom: 1.75rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: .4rem;
  margin-bottom: 1rem;
}

.form-group label {
  font-size: .82rem;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: .01em;
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: .75rem 1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: .9rem;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  background: var(--color-white);
  box-shadow: 0 0 0 3px rgba(0,174,239,.12);
}

.form-group textarea {
  resize: vertical;
  min-height: 90px;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-muted);
  opacity: .7;
}

/* Drop zone factura */
.file-drop {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  background: var(--color-surface);
  position: relative;
}

.file-drop:hover,
.file-drop.drag-over {
  border-color: var(--color-primary);
  background: var(--color-primary-lt);
}

.file-drop input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}

.file-drop-icon { font-size: 2rem; margin-bottom: .5rem; }

.file-drop-text {
  font-size: .85rem;
  color: var(--color-text-muted);
}

.file-drop-text strong { color: var(--color-primary); }

.file-drop-formats {
  font-size: .73rem;
  color: var(--color-text-muted);
  margin-top: .3rem;
}

.file-selected-name {
  display: none;
  margin-top: .5rem;
  font-size: .82rem;
  color: var(--color-success);
  font-weight: 600;
}

.file-selected-name.error {
  color: var(--color-error);
}

.form-privacy {
  font-size: .75rem;
  color: var(--color-text-muted);
  text-align: center;
  margin-top: 1rem;
  line-height: 1.6;
}

.form-privacy a { color: var(--color-primary); text-decoration: underline; }

.form-submit {
  width: 100%;
  justify-content: center;
  padding: 1rem;
  font-size: 1rem;
  margin-bottom: .25rem;
}

/* Mensaje de éxito/error */
.form-message {
  display: none;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: .9rem;
  font-weight: 600;
  margin-top: 1rem;
}

.form-message.success {
  background: rgba(39,174,96,.1);
  color: var(--color-success);
  border: 1px solid rgba(39,174,96,.25);
}

.form-message.error {
  background: rgba(231,76,60,.1);
  color: var(--color-error);
  border: 1px solid rgba(231,76,60,.25);
}

/* ── FAQ ─────────────────────────────────────────────────── */
#faq {
  padding: 6rem 0;
  background: var(--color-surface);
}

.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 5rem;
  align-items: start;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: .75rem;
}

.faq-item {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition);
}

.faq-item.open { border-color: var(--color-primary); }

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 1.1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-display);
  font-size: .92rem;
  font-weight: 700;
  color: var(--color-dark);
  transition: color var(--transition);
}

.faq-item.open .faq-question { color: var(--color-primary); }

.faq-chevron {
  width: 20px; height: 20px;
  flex-shrink: 0;
  transition: transform var(--transition);
  color: var(--color-text-muted);
}

.faq-item.open .faq-chevron { transform: rotate(180deg); color: var(--color-primary); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease;
}

.faq-answer-inner {
  padding: 0 1.25rem 1.1rem;
  font-size: .88rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ── CTA BANNER ──────────────────────────────────────────── */
#cta-banner {
  padding: 5rem 0;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dk) 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}

#cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: rgba(255,255,255,.06);
  pointer-events: none;
}

#cta-banner .section-title { color: var(--color-white); }

#cta-banner .section-subtitle {
  color: rgba(255,255,255,.8);
  margin: 1rem auto 2rem;
  max-width: 540px;
}

.cta-banner-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ── FOOTER ──────────────────────────────────────────────── */
#footer {
  background: var(--color-dark);
  color: rgba(255,255,255,.65);
  padding: 4rem 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.footer-brand-logo {
  height: 38px;
  margin-bottom: 1rem;
  filter: brightness(0) invert(1);
}

.footer-brand-desc {
  font-size: .85rem;
  line-height: 1.7;
  max-width: 260px;
}

.footer-social {
  display: flex;
  gap: .75rem;
  margin-top: 1.25rem;
}

.footer-social a {
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,.07);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all var(--transition);
}

.footer-social a:hover {
  background: var(--color-primary);
  transform: translateY(-2px);
}

.footer-col h4 {
  font-family: var(--font-display);
  font-size: .82rem;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: .6rem;
}

.footer-links a {
  font-size: .85rem;
  color: rgba(255,255,255,.55);
  transition: color var(--transition);
}

.footer-links a:hover { color: var(--color-primary); }

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: .6rem;
  font-size: .85rem;
  margin-bottom: .65rem;
}

.footer-contact-icon { color: var(--color-primary); font-size: .9rem; flex-shrink: 0; margin-top: 2px; }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 1.5rem 0;
}

.footer-bottom-text { font-size: .78rem; }

.footer-legal-links {
  display: flex;
  gap: 1.5rem;
}

.footer-legal-links a {
  font-size: .78rem;
  color: rgba(255,255,255,.45);
  transition: color var(--transition);
}

.footer-legal-links a:hover { color: var(--color-primary); }

/* ── WHATSAPP BUTTON ─────────────────────────────────────── */
.whatsapp-float {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 999;
  display: flex;
  align-items: center;
  gap: .75rem;
}

.whatsapp-bubble {
  background: var(--color-white);
  color: var(--color-dark);
  border-radius: var(--radius-md);
  padding: .6rem 1rem;
  font-size: .8rem;
  font-weight: 600;
  box-shadow: 0 4px 20px rgba(0,0,0,.15);
  opacity: 0;
  transform: translateX(10px);
  transition: all var(--transition);
  white-space: nowrap;
}

.whatsapp-float:hover .whatsapp-bubble {
  opacity: 1;
  transform: translateX(0);
}

.whatsapp-btn {
  width: 58px; height: 58px;
  border-radius: 50%;
  background: #25D366;
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  box-shadow: 0 6px 24px rgba(37,211,102,.4);
  transition: all var(--transition);
  flex-shrink: 0;
}

.whatsapp-btn:hover {
  background: #20ba5a;
  transform: scale(1.08);
  box-shadow: 0 8px 32px rgba(37,211,102,.55);
}

.whatsapp-pulse {
  position: absolute;
  top: 0; right: 0;
  width: 58px; height: 58px;
  border-radius: 50%;
  background: rgba(37,211,102,.3);
  animation: whatsapp-ring 2.5s ease infinite;
  pointer-events: none;
}

@keyframes whatsapp-ring {
  0%   { transform: scale(1); opacity: .7; }
  100% { transform: scale(1.7); opacity: 0; }
}

/* ── COOKIES BANNER ──────────────────────────────────────── */
#cookie-banner {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 2000;
  background: var(--color-white);
  border-top: 2px solid var(--color-primary);
  box-shadow: 0 -8px 40px rgba(0,0,0,.12);
  transform: translateY(100%);
  transition: transform .45s cubic-bezier(.4,0,.2,1);
}

#cookie-banner.visible { transform: translateY(0); }

.cookie-inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.25rem;
  padding: 1.25rem 1.5rem;
  max-width: var(--container);
  margin: 0 auto;
}

.cookie-text {
  flex: 1;
  min-width: 240px;
  font-size: .83rem;
  color: var(--color-text);
  line-height: 1.6;
}

.cookie-text strong { color: var(--color-dark); }
.cookie-text a { color: var(--color-primary); text-decoration: underline; }

.cookie-actions {
  display: flex;
  gap: .75rem;
  flex-wrap: wrap;
}

/* ── MODAL GENÉRICO ──────────────────────────────────────── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 3000;
  background: rgba(0,0,0,.55);
  backdrop-filter: blur(4px);
  align-items: flex-end;
  justify-content: center;
  padding: 1rem;
}

.modal-overlay.active {
  display: flex;
  animation: overlay-in .2s ease;
}

@keyframes overlay-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.modal-box {
  background: var(--color-white);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  padding: 2.5rem;
  width: 100%;
  max-width: 700px;
  max-height: 90svh;
  overflow-y: auto;
  animation: modal-up .3s cubic-bezier(.4,0,.2,1);
}

@media (min-width: 640px) {
  .modal-overlay { align-items: center; }
  .modal-box { border-radius: var(--radius-xl); }
}

@keyframes modal-up {
  from { transform: translateY(24px); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.modal-header h2 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-dark);
}

.modal-close {
  width: 34px; height: 34px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: var(--color-text-muted);
  transition: all var(--transition);
}

.modal-close:hover {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.modal-body { font-size: .88rem; color: var(--color-text); line-height: 1.75; }
.modal-body h3 { font-family: var(--font-display); font-size: 1rem; font-weight: 700; color: var(--color-dark); margin: 1.25rem 0 .5rem; }
.modal-body p { margin-bottom: .85rem; }
.modal-body ul { padding-left: 1.25rem; margin-bottom: .85rem; }
.modal-body ul li { margin-bottom: .4rem; }

/* ── ANIMACIONES ENTRADA ─────────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s ease, transform .7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: none;
}

/* ── RESPONSIVE ──────────────────────────────────────────── */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 3rem; }
  .meter-card { width: 100%; max-width: 400px; margin: 0 auto; }
  .hero-visual { order: -1; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid::before { display: none; }
  .savings-grid { grid-template-columns: 1fr; gap: 3rem; }
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; gap: 2rem; }
  .faq-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links, .nav-cta { display: none; }
  .hamburger { display: flex; }

  /* Mobile nav drawer */
  .mobile-nav {
    display: none;
    position: fixed;
    top: 72px; left: 0; right: 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    padding: 1.5rem;
    flex-direction: column;
    gap: 1rem;
    box-shadow: 0 8px 24px rgba(0,0,0,.08);
    z-index: 999;
  }

  .mobile-nav.open { display: flex; }
  .mobile-nav a {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    padding: .5rem 0;
    border-bottom: 1px solid var(--color-border);
  }

  .services-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .savings-stats { grid-template-columns: 1fr 1fr; }
  .savings-stat-card.highlight { grid-column: 1 / -1; }
  .hero-stats { gap: 1.5rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { justify-content: center; }

  .whatsapp-float { bottom: 1.5rem; right: 1.5rem; }
  #cta-banner { padding: 3.5rem 0; }
}

@media (max-width: 480px) {
  .steps-grid { grid-template-columns: 1fr; }
  .savings-stats { grid-template-columns: 1fr; }
  .savings-stat-card.highlight { grid-column: 1; }
  .cookie-actions { width: 100%; }
  .cookie-actions .btn { flex: 1; justify-content: center; }
  .form-card { padding: 1.5rem; }
  .faq-grid { gap: 2rem; }
}