:root {
  --primary: #33b5e5;
  --primary-dark: #2196c4;
  --primary-light: #e8f6fc;
  --primary-gradient: linear-gradient(135deg, #33b5e5 0%, #2196c4 100%);
  --dark: #3a3a3a;
  --dark-soft: #4a4a4a;
  --text: #444;
  --text-light: #666;
  --text-muted: #888;
  --bg: #ffffff;
  --bg-alt: #f7fafb;
  --bg-card: #ffffff;
  --border: #e4e9ec;
  --border-light: #eef2f4;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,.10);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --transition: .25s cubic-bezier(.4,0,.2,1);
  --max-w: 1160px;
  --header-h: 72px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark); }
ul, ol { list-style: none; }

.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ── HEADER ── */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  z-index: 1000;
  transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: var(--shadow-sm); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo { display: flex; align-items: center; gap: 10px; }
.logo img { height: 44px; width: auto; }

.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a {
  font-size: .9rem;
  font-weight: 500;
  color: var(--dark-soft);
  position: relative;
  padding: 4px 0;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 2px;
  background: var(--primary);
  transition: width var(--transition);
}
.nav-links a:hover { color: var(--primary); }
.nav-links a:hover::after { width: 100%; }

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary);
  color: #fff;
  font-size: .88rem;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 50px;
  transition: background var(--transition), transform var(--transition);
  white-space: nowrap;
}
.header-cta:hover { background: var(--primary-dark); color: #fff; transform: translateY(-1px); }
.header-cta svg { width: 16px; height: 16px; flex-shrink: 0; }

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--dark);
  margin: 5px 0;
  transition: var(--transition);
  border-radius: 2px;
}
.menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ── HERO ── */
.hero {
  padding: 140px 0 80px;
  background: linear-gradient(170deg, var(--primary-light) 0%, #fff 60%);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -120px; right: -120px;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(51,181,229,.12) 0%, transparent 70%);
  border-radius: 50%;
}
.hero-content { max-width: 720px; position: relative; z-index: 1; }
.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  color: var(--dark);
  line-height: 1.15;
  margin-bottom: 20px;
}
.hero h1 span { color: var(--primary); }
.hero p {
  font-size: 1.12rem;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 32px;
}
.hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 16px; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .95rem;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(51,181,229,.35);
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(51,181,229,.4);
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}
.hero-micro {
  font-size: .85rem;
  color: var(--text-muted);
  margin-top: 8px;
}

/* ── SECTIONS ── */
section { padding: 80px 0; }
section:nth-child(even) { background: var(--bg-alt); }

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px;
}
.section-header h2 {
  font-size: clamp(1.5rem, 3.5vw, 2.1rem);
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 16px;
  line-height: 1.25;
}
.section-header p {
  font-size: 1.05rem;
  color: var(--text-light);
}

/* ── CARDS GRID ── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.card-icon {
  width: 56px; height: 56px;
  background: var(--primary-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.card-icon svg { width: 28px; height: 28px; color: var(--primary); }
.card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}
.card p { font-size: .95rem; color: var(--text-light); }

/* ── TRUST SECTION ── */
.trust-block {
  max-width: 780px;
  margin: 0 auto;
  text-align: center;
}
.trust-block p {
  font-size: 1.05rem;
  color: var(--text);
  line-height: 1.8;
}

/* ── STEPS ── */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}
.step {
  text-align: center;
  padding: 28px 20px;
  position: relative;
}
.step-number {
  width: 48px; height: 48px;
  background: var(--primary);
  color: #fff;
  font-size: 1.2rem;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
}
.step h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 10px;
}
.step p { font-size: .9rem; color: var(--text-light); }

/* ── COMPARE COLUMNS ── */
.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  max-width: 900px;
  margin: 0 auto;
}
.compare-col {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 36px 32px;
  position: relative;
  overflow: hidden;
}
.compare-col::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--primary-gradient);
}
.compare-col h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 14px;
}
.compare-col p { font-size: .95rem; color: var(--text-light); line-height: 1.7; }
.compare-conclusion {
  text-align: center;
  max-width: 700px;
  margin: 32px auto 0;
  font-size: 1rem;
  color: var(--text);
  font-style: italic;
}

/* ── DUAL FUEL ── */
.dual-fuel-content {
  max-width: 780px;
  margin: 0 auto;
  text-align: center;
}
.dual-fuel-content p { font-size: 1.05rem; color: var(--text); line-height: 1.8; }

/* ── DOCUMENTS ── */
.docs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 900px;
  margin: 0 auto 28px;
}
.doc-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  font-size: .92rem;
  font-weight: 500;
  color: var(--dark-soft);
}
.doc-item svg { width: 20px; height: 20px; color: var(--primary); flex-shrink: 0; }
.docs-note {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
  font-size: .95rem;
  color: var(--text-light);
}

/* ── OPERATIONS (Cambio/Voltura/Subentro) ── */
.ops-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.op-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 32px 28px;
  text-align: center;
}
.op-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}
.op-card p { font-size: .93rem; color: var(--text-light); line-height: 1.7; }
.ops-note {
  text-align: center;
  margin-top: 28px;
  font-size: .95rem;
  color: var(--text);
  font-weight: 500;
}

/* ── INTERNET MINI-BOXES ── */
.internet-content {
  max-width: 780px;
  margin: 0 auto 36px;
  text-align: center;
}
.internet-content p { font-size: 1.05rem; color: var(--text); line-height: 1.8; }
.mini-boxes {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}
.mini-box {
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: .88rem;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: 50px;
  border: 1px solid rgba(51,181,229,.15);
}

/* ── FAQ ── */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 22px 40px 22px 0;
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--dark);
  text-align: left;
  cursor: pointer;
  position: relative;
  font-family: inherit;
  line-height: 1.5;
}
.faq-question::after {
  content: '+';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--primary);
  transition: transform var(--transition);
}
.faq-item.active .faq-question::after {
  content: '\2212';
  transform: translateY(-50%) rotate(180deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease, padding .35s ease;
}
.faq-answer p {
  padding: 0 0 22px;
  font-size: .95rem;
  color: var(--text-light);
  line-height: 1.7;
}
.faq-item.active .faq-answer { max-height: 300px; }

/* ── RIGHTS / AUTHORITY ── */
.rights-content {
  max-width: 780px;
  margin: 0 auto;
  text-align: center;
}
.rights-content > p { font-size: 1.05rem; color: var(--text); line-height: 1.8; margin-bottom: 32px; }
.rights-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}
.rights-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 12px 24px;
  font-size: .9rem;
  font-weight: 500;
  color: var(--dark-soft);
  transition: all var(--transition);
}
.rights-link:hover {
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}
.rights-link svg { width: 18px; height: 18px; }

/* ── CTA BANNER ── */
.cta-banner {
  padding: 72px 0;
  background: var(--primary-gradient);
  text-align: center;
  color: #fff;
  position: relative;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(180deg, rgba(0,0,0,.08) 0%, transparent 40%, transparent 60%, rgba(0,0,0,.12) 100%);
  pointer-events: none;
}
.cta-banner .container { position: relative; z-index: 1; }
.cta-banner h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  margin-bottom: 16px;
  text-shadow: 0 2px 4px rgba(0,0,0,.2);
}
.cta-banner p {
  font-size: 1.05rem;
  opacity: .95;
  margin-bottom: 28px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  text-shadow: 0 1px 3px rgba(0,0,0,.18);
}
.cta-banner .btn-white {
  background: #fff;
  color: var(--primary-dark);
  font-weight: 700;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all var(--transition);
  box-shadow: 0 4px 14px rgba(0,0,0,.15);
  border: none;
}
.cta-banner .btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,.25);
  background: #fff;
  color: #1565c0;
}

/* ── FOOTER ── */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,.7);
  padding: 48px 0 28px;
  font-size: .88rem;
  line-height: 1.7;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 36px;
}
.footer-brand img { height: 40px; margin-bottom: 16px; filter: brightness(0) invert(1); }
.footer-brand p { max-width: 340px; }
.footer-col h4 {
  color: #fff;
  font-size: .92rem;
  font-weight: 600;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: .5px;
}
.footer-col a {
  display: block;
  color: rgba(255,255,255,.6);
  font-size: .88rem;
  padding: 4px 0;
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--primary); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding-top: 24px;
}
.footer-disclaimer {
  font-size: .82rem;
  color: rgba(255,255,255,.45);
  line-height: 1.7;
  margin-bottom: 16px;
}
.footer-copy {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: .84rem;
}
.footer-copy a { color: rgba(255,255,255,.5); }
.footer-copy a:hover { color: var(--primary); }

/* ── STICKY CTA BANNER (MOBILE) ── */
.sticky-cta {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: #fff;
  border-top: 2px solid var(--primary);
  box-shadow: 0 -4px 20px rgba(0,0,0,.12);
  z-index: 8888;
  transform: translateY(100%);
  transition: transform .35s cubic-bezier(.4,0,.2,1);
  padding: 12px 16px;
}
.sticky-cta.visible { transform: translateY(0); }
.sticky-cta-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.sticky-cta-text {
  display: flex;
  align-items: center;
  gap: 12px;
}
.sticky-cta-text svg {
  width: 44px; height: 44px;
  color: var(--primary);
  flex-shrink: 0;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}
.sticky-cta-text div h4 {
  font-size: .95rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 2px;
}
.sticky-cta-text div p {
  font-size: .8rem;
  color: var(--text-light);
}
.sticky-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary-gradient);
  color: #fff;
  font-size: .88rem;
  font-weight: 700;
  padding: 12px 20px;
  border-radius: 50px;
  flex-shrink: 0;
  white-space: nowrap;
  box-shadow: 0 4px 12px rgba(51,181,229,.35);
  transition: all var(--transition);
}
.sticky-cta-btn:hover {
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(51,181,229,.45);
}
.sticky-cta-close {
  position: absolute;
  top: 8px; right: 8px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  color: var(--text-muted);
  font-size: 1.2rem;
  line-height: 1;
  transition: color var(--transition);
}
.sticky-cta-close:hover { color: var(--dark); }

/* ── COOKIE BANNER ── */
.cookie-banner {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--dark);
  color: rgba(255,255,255,.85);
  padding: 20px 24px;
  z-index: 9999;
  transform: translateY(100%);
  transition: transform .4s ease;
  font-size: .88rem;
}
.cookie-banner.visible { transform: translateY(0); }
.cookie-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.cookie-inner p { flex: 1; min-width: 280px; }
.cookie-inner a { color: var(--primary); text-decoration: underline; }
.cookie-btns { display: flex; gap: 10px; flex-shrink: 0; }
.cookie-btn {
  padding: 10px 22px;
  border-radius: 50px;
  font-size: .85rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
}
.cookie-accept { background: var(--primary); color: #fff; }
.cookie-accept:hover { background: var(--primary-dark); }
.cookie-reject { background: rgba(255,255,255,.12); color: #fff; }
.cookie-reject:hover { background: rgba(255,255,255,.2); }

/* ── MOBILE NAV OVERLAY ── */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-h); left: 0; right: 0; bottom: 0;
  background: rgba(255,255,255,.98);
  backdrop-filter: blur(12px);
  z-index: 999;
  padding: 32px 24px;
  flex-direction: column;
  gap: 8px;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--dark-soft);
  padding: 14px 0;
  border-bottom: 1px solid var(--border-light);
}
.mobile-nav a:hover { color: var(--primary); }
.mobile-nav .header-cta {
  margin-top: 16px;
  justify-content: center;
}

/* ── LEGAL PAGES ── */
.legal-page { padding: 120px 0 80px; }
.legal-page h1 {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 32px;
}
.legal-page h2 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--dark);
  margin: 32px 0 12px;
}
.legal-page p, .legal-page li {
  font-size: .95rem;
  color: var(--text);
  line-height: 1.8;
  margin-bottom: 12px;
}
.legal-page ul { padding-left: 24px; list-style: disc; }

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .cards-grid, .ops-grid { grid-template-columns: 1fr 1fr; }
  .steps-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
  .docs-grid { grid-template-columns: 1fr 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root { --header-h: 64px; }

  .nav-links, .header-cta-desktop { display: none; }
  .menu-toggle { display: block; }

  .hero { padding: 110px 0 60px; }
  .hero h1 { font-size: 1.8rem; }
  .hero p { font-size: 1rem; }

  section { padding: 56px 0; }

  .cards-grid, .ops-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; gap: 16px; }
  .compare-grid { grid-template-columns: 1fr; }
  .docs-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .footer-copy { flex-direction: column; text-align: center; }

  .hero-ctas { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }

  .cookie-inner { flex-direction: column; text-align: center; }
  .cookie-btns { width: 100%; justify-content: center; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero h1 { font-size: 1.55rem; }
  .section-header h2 { font-size: 1.35rem; }
}

/* Sticky CTA responsive */
@media (min-width: 1024px) {
  .sticky-cta { display: none; }
}
@media (max-width: 768px) {
  .sticky-cta-inner {
    flex-direction: column;
    gap: 10px;
    text-align: center;
  }
  .sticky-cta-text { text-align: left; }
  .sticky-cta-text svg { width: 36px; height: 36px; }
  .sticky-cta-btn { width: 100%; justify-content: center; padding: 14px 20px; }
}