:root {
  --color-primary:     #1f2937;
  --color-accent:      #059669;
  --color-accent-light:#10b981;
  --color-accent-dark: #047857;
  --color-accent-bg:   #ecfdf5;
  --color-accent-bg2:  #d1fae5;
  --color-white:       #ffffff;
  --color-gray-50:     #f9fafb;
  --color-gray-100:    #f3f4f6;
  --color-gray-200:    #e5e7eb;
  --color-gray-300:    #d1d5db;
  --color-gray-400:    #9ca3af;
  --color-gray-500:    #6b7280;
  --color-gray-600:    #4b5563;
  --color-gray-700:    #374151;
  --color-gray-800:    #1f2937;
  --color-gray-900:    #111827;
  --color-error:       #ef4444;

  --font-heading: 'Inter', sans-serif;
  --font-body:    'Mulish', sans-serif;

  --radius-sm:  8px;
  --radius-md:  12px;
  --radius-lg:  16px;
  --radius-xl:  24px;

  --shadow-sm:  0 1px 2px rgba(0,0,0,.05);
  --shadow-md:  0 4px 6px -1px rgba(0,0,0,.1), 0 2px 4px -2px rgba(0,0,0,.1);
  --shadow-lg:  0 10px 15px -3px rgba(0,0,0,.1), 0 4px 6px -4px rgba(0,0,0,.1);
  --shadow-xl:  0 20px 25px -5px rgba(0,0,0,.1), 0 8px 10px -6px rgba(0,0,0,.1);

  --transition: .3s ease;
}

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

a, button, input, select, h1, h2, h3, h4, h5 {
  border: none;
  text-decoration: none;
  background: none;
  -webkit-font-smoothing: antialiased;
}

menu, ol, ul { list-style-type: none; }

body {
  font-family: var(--font-body);
  color: var(--color-gray-800);
  background: var(--color-gray-50);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

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

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

/* ── Barra de progreso al hacer scroll   ───────────────────────────────────────── */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent-light), var(--color-accent), var(--color-accent-dark));
  transform-origin: left;
  transform: scaleX(0);
  z-index: 1100;
  pointer-events: none;
  transition: none;
}

/* ── svg decorativo ─────── */
.energy-line {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
.energy-line__path {
  stroke-linecap: round;
  stroke-linejoin: round;
}
.energy-line__glow {
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: .15;
  filter: blur(6px);
}
@media (max-width: 767px) {
  .energy-line { display: none; }
}

/* ── Honeypot (anti-bot) ───────────────────────────────────────── */
.hp-field {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  width: 0;
  pointer-events: none;
}

/* ── Animaciones ───────────────────────────────────────────── */
.animate-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .6s ease, transform .6s ease;
}
.animate-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .animate-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ═══════════════════════════════════════════════════════════════
   HEADER
   ═══════════════════════════════════════════════════════════════ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,.97);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(8px);
  transition: background var(--transition), box-shadow var(--transition);
}

.header__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.header__logo-becall {
  height: 30px;
  width: auto;
  filter: brightness(0) saturate(100%) invert(27%) sepia(10%) saturate(1200%) hue-rotate(170deg) brightness(92%);
}
.header__logo-edp {
  height: 32px;
  width: auto;
  filter: brightness(0) saturate(100%) invert(27%) sepia(10%) saturate(1200%) hue-rotate(170deg) brightness(92%);
  opacity: .8;
  border-left: 1px solid var(--color-gray-300);
  padding-left: 12px;
}

.header__nav {
  display: flex;
  gap: 32px;
}
.header__nav a {
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 600;
  color: var(--color-gray-700);
  transition: color var(--transition);
}
.header__nav a:hover,
.header__nav a.is-active {
  color: var(--color-accent);
}

.header__phones {
  display: flex;
  gap: 16px;
}
.header__phone {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  background: var(--color-accent);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 600;
  transition: background var(--transition);
  cursor: pointer;
}
.header__phone:hover {
  background: var(--color-accent-dark);
}
.header__phone-icon {
  width: 18px;
  height: 18px;
  color: var(--color-white);
}
.header__phone-text small {
  display: block;
  font-size: 11px;
  font-weight: 400;
  opacity: .8;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}
.hamburger__bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-gray-800);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.hamburger.is-open .hamburger__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.is-open .hamburger__bar:nth-child(2) { opacity: 0; }
.hamburger.is-open .hamburger__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  background: var(--color-white);
  padding: 24px;
  box-shadow: var(--shadow-lg);
  z-index: 999;
  flex-direction: column;
  gap: 16px;
  transform: translateY(-100%);
  transition: transform var(--transition);
}
.mobile-menu.is-open {
  transform: translateY(0);
}
.mobile-menu a {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-gray-800);
  padding: 8px 0;
}
.mobile-menu a:hover { color: var(--color-accent); }
.mobile-menu__phone {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--color-accent);
  color: var(--color-white) !important;
  border-radius: var(--radius-md);
  justify-content: center;
  margin-top: 8px;
}

/* ═══════════════════════════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--color-gray-900) url('../img/background_hero.jpg') center 30%/cover no-repeat;
  padding: 120px 24px 80px;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(17,24,39,.92) 0%, rgba(5,150,105,.7) 50%, rgba(17,24,39,.85) 100%);
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 60px;
  align-items: center;
}

.hero__title {
  font-family: var(--font-heading);
  font-size: 52px;
  font-weight: 800;
  line-height: 1.1;
  color: var(--color-white);
  margin-bottom: 20px;
  text-shadow: 0 2px 8px rgba(0,0,0,.3);
}
.hero__title-accent {
  color: var(--color-accent-light);
  display: block;
}
.hero__title-highlight {
  position: relative;
  color: var(--color-white);
}
.hero__title-highlight::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 0;
  right: 0;
  height: 6px;
  background: var(--color-accent);
  opacity: .5;
  border-radius: 3px;
}

.hero__subtitle {
  font-size: 20px;
  color: rgba(255,255,255,.9);
  font-weight: 500;
  max-width: 500px;
  text-shadow: 0 1px 4px rgba(0,0,0,.3);
}

/* ═══════════════════════════════════════════════════════════════
   C2C
   ═══════════════════════════════════════════════════════════════ */
.c2c-form {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: 32px;
  box-shadow: var(--shadow-xl);
}

.c2c-form__header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}
.c2c-form__icon {
  width: 40px;
  height: 40px;
}
.c2c-form__title {
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-gray-900);
}
.c2c-form__title strong {
  color: var(--color-accent);
}
.c2c-form__desc {
  font-size: 14px;
  color: var(--color-gray-500);
  margin-bottom: 20px;
}

.c2c-form__input {
  display: block;
  width: 100%;
  padding: 14px 16px;
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--color-gray-800);
  transition: border-color var(--transition), box-shadow var(--transition);
  margin-bottom: 12px;
  outline: none;
}
.c2c-form__input::placeholder {
  color: var(--color-gray-400);
}
.c2c-form__input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(5,150,105,.15);
}
.c2c-form__input.has-error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(239,68,68,.15);
}

.c2c-form__checkbox {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 12px;
}
.c2c-form__checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--color-accent);
  flex-shrink: 0;
  cursor: pointer;
}
.c2c-form__checkbox label {
  font-size: 12px;
  color: var(--color-gray-500);
  line-height: 1.4;
  cursor: pointer;
}
.c2c-form__checkbox.has-error label {
  color: var(--color-error);
}

.c2c-form__privacy-link {
  color: var(--color-accent);
  cursor: pointer;
  text-decoration: underline;
  font-weight: 600;
}

.c2c-form__msg {
  font-size: 13px;
  color: var(--color-error);
  min-height: 20px;
  margin-bottom: 4px;
}

.c2c-form__submit {
  display: block;
  width: 100%;
  padding: 16px;
  background: var(--color-accent);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .5px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}
.c2c-form__submit:hover {
  background: var(--color-accent-dark);
  transform: translateY(-1px);
}
.c2c-form__submit:disabled {
  opacity: .6;
  cursor: not-allowed;
  transform: none;
}

/* Modo noche (oficina cerrada) */
.c2c-night {
  display: none;
  text-align: center;
  padding: 24px 0;
}
.c2c-night.is-active {
  display: block;
}
.c2c-night a {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--color-accent);
  font-size: 18px;
  font-weight: 700;
}
.c2c-night a svg {
  color: var(--color-accent);
}

/* Response */
.c2c-form__response {
  display: none;
  text-align: center;
  padding: 32px 16px;
}
.c2c-form__response.is-visible {
  display: block;
  animation: fadeInUp .5s ease;
}
.c2c-form__response-title {
  display: block;
  font-family: var(--font-heading);
  font-size: 28px;
  font-weight: 800;
  color: var(--color-accent);
  margin-bottom: 12px;
}
.c2c-form__response-title::before {
  content: '';
  display: block;
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  background: var(--color-accent-bg);
  border-radius: 50%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23059669' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 28px;
}
.c2c-form__response p {
  font-size: 15px;
  color: var(--color-gray-600);
  line-height: 1.5;
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ═══════════════════════════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 700;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: .3px;
}
.btn--primary {
  background: var(--color-accent);
  color: var(--color-white);
}
.btn--primary:hover {
  background: var(--color-accent-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.btn--outline {
  background: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
}
.btn--outline:hover {
  background: var(--color-accent);
  color: var(--color-white);
  transform: translateY(-2px);
}
.btn--white {
  background: var(--color-white);
  color: var(--color-accent);
}
.btn--white:hover {
  background: var(--color-gray-100);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ═══════════════════════════════════════════════════════════════
   Secciones
   ═══════════════════════════════════════════════════════════════ */
.section__title {
  font-family: var(--font-heading);
  font-size: 36px;
  font-weight: 800;
  color: var(--color-gray-900);
  text-align: center;
  margin-bottom: 48px;
}
.section__title-accent {
  color: var(--color-accent);
}
.section__cta {
  text-align: center;
  margin-top: 40px;
}

/* ── En ergia solar ─────────────────────────────────────────────── */
.section-solar {
  padding: 100px 0;
  background: var(--color-white);
  position: relative;
}
.section-solar::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--color-accent-light) 50%, transparent 100%);
  opacity: .4;
}
.section-solar::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(var(--color-accent-light) .5px, transparent .5px);
  background-size: 32px 32px;
  opacity: .06;
  pointer-events: none;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.feature-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-accent);
}

.feature-card__icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-bg);
  border-radius: var(--radius-lg);
}
.feature-card__icon img {
  width: 48px;
  height: 48px;
}

.feature-card__title {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: 12px;
}

.feature-card__desc {
  font-size: 15px;
  color: var(--color-gray-500);
  line-height: 1.6;
}

/* ── Planes ─────────────────────────────────────────────── */
.section-plans {
  padding: 100px 0;
  background: linear-gradient(180deg, var(--color-accent-bg) 0%, var(--color-gray-50) 100%);
  position: relative;
}
.section-plans::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--color-accent) 50%, transparent 100%);
  opacity: .3;
}

.plans-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  align-items: start;
}

.plan-card {
  position: relative;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
}
.plan-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.plan-card--featured {
  border: 2px solid var(--color-accent);
  transform: scale(1.05);
  box-shadow: var(--shadow-lg);
}
.plan-card--featured:hover {
  transform: scale(1.05) translateY(-8px);
}

.plan-card__badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 4px 16px;
  border-radius: 20px;
}

.plan-card__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-bg);
  border-radius: 50%;
}
.plan-card__icon img {
  width: 36px;
  height: 36px;
}

.plan-card__title {
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: 12px;
}

.plan-card__desc {
  font-size: 14px;
  color: var(--color-gray-500);
  line-height: 1.6;
  margin-bottom: 24px;
}

/* ── Banner ────────────────────────────────────────────── */
.section-banner {
  position: relative;
  padding: 100px 0;
  background: url('../img/banner0.png') center/cover no-repeat;
}
.section-banner__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(17,24,39,.9) 0%, rgba(5,150,105,.75) 100%);
}

.banner-content {
  position: relative;
  z-index: 1;
  text-align: center;
}

.banner-content__title {
  font-family: var(--font-heading);
  font-size: 40px;
  font-weight: 800;
  color: var(--color-white);
  margin-bottom: 40px;
  line-height: 1.2;
}
.banner-content__accent {
  color: var(--color-accent-light);
}

.banner-features {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-bottom: 40px;
}

.banner-feature {
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(255,255,255,.9);
  font-size: 16px;
  font-weight: 500;
}
.banner-feature img {
  width: 28px;
  height: 28px;
  filter: brightness(0) invert(1);
}

/* ── FAQ ───────────────────────────────────────────────── */
.section-faq {
  padding: 100px 0;
  background: var(--color-white);
  position: relative;
}
.section-faq::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--color-accent-light) 50%, transparent 100%);
  opacity: .4;
}

.faq {
  max-width: 800px;
  margin: 0 auto;
}

.faq__item {
  border-bottom: 1px solid var(--color-gray-200);
}
.faq__item:last-child {
  border-bottom: none;
}

.faq__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-gray-800);
  cursor: pointer;
  text-align: left;
  transition: color var(--transition);
}
.faq__question:hover {
  color: var(--color-accent);
}
.faq__question::after {
  content: '+';
  font-size: 24px;
  font-weight: 300;
  color: var(--color-accent);
  transition: transform var(--transition);
  flex-shrink: 0;
  margin-left: 16px;
}
.faq__item.is-open .faq__question::after {
  transform: rotate(45deg);
}

.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease, padding .4s ease;
  font-size: 15px;
  color: var(--color-gray-500);
  line-height: 1.7;
  padding: 0;
}
.faq__item.is-open .faq__answer {
  max-height: 300px;
  padding: 0 0 20px;
}

/* ═══════════════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════════════ */
.site-footer {
  background: var(--color-gray-900);
  color: rgba(255,255,255,.7);
  padding: 60px 0 0;
}

.footer__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
}

.footer__logo {
  height: 32px;
  width: auto;
  margin-bottom: 8px;
}
.footer__logo--becall {
  height: 22px;
  margin-bottom: 12px;
}
.footer__tagline {
  font-size: 14px;
  color: rgba(255,255,255,.5);
}

.footer__col h4 {
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.footer__col a {
  display: block;
  font-size: 14px;
  color: rgba(255,255,255,.6);
  padding: 4px 0;
  transition: color var(--transition);
}
.footer__col a:hover {
  color: var(--color-accent-light);
}
.footer__schedule {
  font-size: 13px;
  color: rgba(255,255,255,.4);
  margin-top: 4px;
}

.footer__bottom {
  margin-top: 48px;
  padding: 20px 24px;
  border-top: 1px solid rgba(255,255,255,.1);
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,.4);
}

/* ═══════════════════════════════════════════════════════════════
   STICKY BAR
   ═══════════════════════════════════════════════════════════════ */
.sticky-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 900;
  background: var(--color-white);
  box-shadow: 0 -4px 12px rgba(0,0,0,.1);
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  transform: translateY(100%);
  transition: transform var(--transition);
}
.sticky-cta.is-visible {
  transform: translateY(0);
}
.sticky-cta__left {
  display: flex;
  align-items: center;
  gap: 8px;
}
.sticky-cta__label {
  font-size: 14px;
  color: var(--color-gray-500);
}
.sticky-cta__phone {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-accent);
  font-size: 16px;
}
.sticky-cta__phone svg {
  color: var(--color-accent);
}
.sticky-cta__action {
  padding: 10px 24px;
  background: var(--color-accent);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition);
}
.sticky-cta__action:hover {
  background: var(--color-accent-dark);
}

/* ═══════════════════════════════════════════════════════════════
   Whatsapp
   ═══════════════════════════════════════════════════════════════ */
.whatsapp-float {
  position: fixed;
  bottom: 80px;
  right: 24px;
  z-index: 800;
  width: 56px;
  height: 56px;
  background: #25d366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(37,211,102,.4);
  transition: transform var(--transition), box-shadow var(--transition);
}
.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(37,211,102,.5);
}
.whatsapp-float svg {
  width: 28px;
  height: 28px;
  fill: #fff;
}

/* ═══════════════════════════════════════════════════════════════
   Modales
   ═══════════════════════════════════════════════════════════════ */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0,0,0,.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}
.modal-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.modal-box {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  width: 90%;
  max-width: 480px;
  max-height: 85vh;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  position: relative;
  transform: translateY(20px);
  transition: transform var(--transition);
}
.modal-overlay.is-open .modal-box {
  transform: translateY(0);
}
.modal-box--wide {
  max-width: 720px;
}

.modal-box__close {
  position: absolute;
  top: 16px;
  right: 16px;
  font-size: 28px;
  color: var(--color-gray-400);
  cursor: pointer;
  z-index: 1;
  line-height: 1;
  transition: color var(--transition);
}
.modal-box__close:hover {
  color: var(--color-gray-800);
}

.modal-box__content {
  padding: 32px;
}
.modal-box__content--scroll {
  max-height: 70vh;
  overflow-y: auto;
}
.modal-box__content h2 {
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 16px;
}
.modal-box__content h3 {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 700;
  margin: 20px 0 8px;
}
.modal-box__content p {
  font-size: 14px;
  color: var(--color-gray-600);
  line-height: 1.7;
  margin-bottom: 8px;
}
.modal-box__content ul {
  list-style: disc inside;
  margin: 8px 0 16px;
  font-size: 14px;
  color: var(--color-gray-600);
  line-height: 1.7;
}
.modal-box__content a {
  color: var(--color-accent);
  text-decoration: underline;
}

/* Modales de los planes detallados */
.modal-plan__header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 2px solid var(--color-accent-bg);
}
.modal-plan__header h2 {
  margin-bottom: 0;
  color: var(--color-accent);
}
.modal-plan__icon {
  width: 48px;
  height: 48px;
  padding: 10px;
  background: var(--color-accent-bg);
  border-radius: var(--radius-md);
}
.modal-plan__cta {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--color-gray-200);
  text-align: center;
}

/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════════ */
/* ── Tablet (max 991px) ─────────────────────────────────────── */
@media (max-width: 991px) {
  .header__nav { display: none; }
  .header__phones { display: none; }
  .hamburger { display: flex; }
  .mobile-menu { display: flex; }

  .hero__content {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero__title { font-size: 38px; }

  .features-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
  .plans-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .plan-card--featured {
    transform: none;
  }
  .plan-card--featured:hover {
    transform: translateY(-8px);
  }

  .feature-card { padding: 28px 20px; }
  .plan-card { padding: 28px 20px; }

  .banner-content__title { font-size: 28px; }

  .footer__inner {
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: 24px;
  }
  .footer__col--brand { grid-column: 1 / -1; }

  .sticky-cta__left { display: none; }
}

/* ── Mobile (max 767px) ────────────────────────────────────── */
@media (max-width: 767px) {
  .hero {
    min-height: auto;
    padding: 100px 16px 60px;
  }
  .hero__title { font-size: 30px; }
  .hero__subtitle { font-size: 16px; }

  .c2c-form { padding: 24px; }

  .section-solar,
  .section-plans,
  .section-faq {
    padding: 60px 0;
  }
  .section-banner { padding: 60px 0; }
  .section__title { font-size: 26px; margin-bottom: 32px; }

  /* Cards: scroll horizontal en mobile */
  .features-grid {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    gap: 12px;
    padding: 0 16px 8px;
    margin: 0 -24px;
  }
  .feature-card {
    min-width: 60vw;
    max-width: 240px;
    flex-shrink: 0;
    scroll-snap-align: center;
    padding: 20px 16px;
  }
  .feature-card__icon { width: 60px; height: 60px; }
  .feature-card__icon img { width: 36px; height: 36px; }
  .feature-card__title { font-size: 17px; }
  .feature-card__desc { font-size: 14px; }

  .plans-grid {
    display: flex;
    overflow-x: auto;
    overflow-y: visible;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    gap: 12px;
    padding: 16px 16px 8px;
    margin: 0 -24px;
  }
  .plan-card {
    min-width: 60vw;
    max-width: 240px;
    flex-shrink: 0;
    scroll-snap-align: center;
    padding: 20px 16px;
  }
  .plan-card--featured {
    transform: none;
  }
  .plan-card__icon { width: 52px; height: 52px; }
  .plan-card__icon img { width: 30px; height: 30px; }
  .plan-card__title { font-size: 18px; }
  .plan-card__desc { font-size: 13px; margin-bottom: 16px; }

  .banner-features {
    flex-direction: column;
    align-items: center;
    gap: 16px;
  }

  /* Footer compacto: 3 columnas en linea */
  .footer__inner {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 20px 16px;
  }
  .footer__col--brand {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
  }
  .footer__col--brand .footer__logo {
    height: 24px;
    margin-bottom: 0;
  }
  .footer__col--brand .footer__logo--edp {
    height: 20px;
  }
  .footer__col--brand .footer__tagline {
    width: 100%;
    font-size: 12px;
    margin-top: 4px;
  }
  .footer__col h4 { font-size: 12px; margin-bottom: 8px; }
  .footer__col a { font-size: 13px; padding: 3px 0; }
  .footer__schedule { font-size: 12px; }

  .sticky-cta { justify-content: center; }
}

/* ── Small mobile (max 480px) ──────────────────────────────── */
@media (max-width: 480px) {
  .hero__title { font-size: 26px; }
  .c2c-form { padding: 20px; }
  .section__title { font-size: 22px; }
  .banner-content__title { font-size: 24px; }
  .banner-feature { font-size: 14px; }

  .feature-card { min-width: 65vw; }
  .plan-card { min-width: 65vw; }

  .footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: 16px 12px;
  }
  .footer__col:last-child {
    grid-column: 1 / -1;
  }
}