/* offerte-gaseluce.it — Cloudoperation */

:root {
  --color-bg: #0f1419;
  --color-surface: #1a222d;
  --color-surface-elevated: #232d3a;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-text: #e8edf4;
  --color-text-muted: #94a3b8;
  --color-accent: #38bdf8;
  --color-accent-warm: #fbbf24;
  --color-accent-soft: rgba(56, 189, 248, 0.15);
  --font-sans: "DM Sans", system-ui, sans-serif;
  --font-display: "Outfit", var(--font-sans);
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 24px 48px rgba(0, 0, 0, 0.35);
  --max-width: 1120px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  background-image:
    radial-gradient(ellipse 120% 80% at 50% -20%, rgba(56, 189, 248, 0.12), transparent),
    radial-gradient(ellipse 80% 50% at 100% 50%, rgba(251, 191, 36, 0.06), transparent);
}

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

a {
  color: var(--color-accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: #7dd3fc;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link:focus {
  position: fixed;
  left: 1rem;
  top: 1rem;
  width: auto;
  height: auto;
  padding: 0.75rem 1rem;
  background: var(--color-accent);
  color: var(--color-bg);
  z-index: 9999;
  border-radius: var(--radius);
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 20, 25, 0.94);
  border-bottom: 1px solid var(--color-border);
  isolation: isolate;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 1.25rem;
  flex-wrap: wrap;
  position: relative;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  color: var(--color-text);
  text-decoration: none;
  flex-shrink: 0;
  min-width: 0;
}

.logo span {
  color: var(--color-accent);
}

/* Hamburger (hidden on desktop) */

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  margin: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface-elevated);
  color: var(--color-text);
  cursor: pointer;
  flex-shrink: 0;
}

.nav-toggle:hover {
  background: var(--color-surface);
  border-color: rgba(56, 189, 248, 0.35);
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.nav-toggle-box {
  position: relative;
  width: 1.35rem;
  height: 1rem;
  display: block;
}

.nav-toggle-bar {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease, top 0.2s ease, bottom 0.2s ease;
}

.nav-toggle-bar:nth-child(1) {
  top: 0;
}

.nav-toggle-bar:nth-child(2) {
  top: 50%;
  margin-top: -1px;
}

.nav-toggle-bar:nth-child(3) {
  bottom: 0;
}

.site-header.menu-open .nav-toggle-bar:nth-child(1) {
  top: 50%;
  margin-top: -1px;
  transform: rotate(45deg);
}

.site-header.menu-open .nav-toggle-bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.site-header.menu-open .nav-toggle-bar:nth-child(3) {
  bottom: auto;
  top: 50%;
  margin-top: -1px;
  transform: rotate(-45deg);
}

.nav-main {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  align-items: center;
}

.nav-main a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
}

.nav-main a:hover {
  color: var(--color-text);
}

.nav-close {
  display: none;
}

@media (max-width: 768px) {
  .header-inner {
    flex-wrap: nowrap;
    gap: 0.75rem;
  }

  .logo {
    flex: 1 1 0;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: clamp(0.9rem, 3.5vw, 1.05rem);
  }

  .header-tools {
    flex-shrink: 0;
    gap: 0.5rem;
  }

  .nav-toggle {
    display: flex;
  }

  /* Menu aperto: solo la X nel pannello, niente hamburger duplicato */
  .site-header.menu-open .nav-toggle {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }

  .btn-phone-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  .nav-main {
    position: fixed;
    z-index: 150;
    inset: 0;
    display: flex;
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    margin: 0;
    padding: calc(4.5rem + env(safe-area-inset-top, 0)) 1.25rem 2rem;
    background: rgba(10, 14, 18, 0.98);
    backdrop-filter: blur(14px);
    overflow-y: auto;
    overscroll-behavior: contain;
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, visibility 0.2s ease;
  }

  .site-header.menu-open .nav-main {
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
  }

  .nav-close {
    display: none;
    position: fixed;
    top: calc(0.85rem + env(safe-area-inset-top, 0));
    right: 1rem;
    z-index: 160;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    padding: 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-surface-elevated);
    color: var(--color-text);
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
  }

  .site-header.menu-open .nav-close {
    display: flex;
  }

  .nav-close:hover {
    background: var(--color-surface);
  }

  .nav-close:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
  }

  .nav-main > a {
    display: block;
    width: 100%;
    padding: 1rem 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
    text-decoration: none;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-main > a:last-of-type {
    border-bottom: none;
  }
}

@media (min-width: 769px) {
  .nav-toggle {
    display: none !important;
  }

  .nav-close {
    display: none !important;
  }

  .nav-main {
    flex: 1 1 auto;
    justify-content: center;
    min-width: 0;
  }
}

body.nav-open {
  overflow: hidden;
}

.btn-phone {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.1rem;
  position: relative;
  background: linear-gradient(135deg, var(--color-accent), #0ea5e9);
  color: #042f2e;
  font-weight: 700;
  font-size: 0.9375rem;
  border-radius: 999px;
  text-decoration: none;
  box-shadow: 0 4px 20px rgba(56, 189, 248, 0.35);
  white-space: nowrap;
}

.btn-phone:hover {
  color: #042f2e;
  filter: brightness(1.05);
  transform: translateY(-1px);
}

.btn-phone svg {
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .header-tools .btn-phone {
    padding: 0.65rem;
    border-radius: var(--radius);
  }
}

/* Hero */

.hero {
  padding: 4rem 1.5rem 5rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

@media (min-width: 900px) {
  .hero-grid {
    grid-template-columns: 1.1fr 0.9fr;
  }
}

.hero-badge {
  display: inline-block;
  padding: 0.35rem 0.85rem;
  background: var(--color-accent-soft);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 1.25rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 2.85rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 0 0 1.25rem;
}

.hero-lead {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  margin: 0 0 2rem;
  max-width: 36ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.9rem 1.5rem;
  background: var(--color-accent-warm);
  color: #1c1917;
  font-weight: 700;
  border-radius: var(--radius);
  text-decoration: none;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  font-family: inherit;
}

.btn-primary:hover {
  filter: brightness(1.08);
  color: #1c1917;
}

/* Inline / section CTAs (CRO) */

.cta-bar {
  margin-top: 2rem;
  padding: 1.35rem 1.5rem;
  text-align: center;
  background: linear-gradient(180deg, rgba(56, 189, 248, 0.1), rgba(15, 20, 25, 0.5));
  border: 1px solid rgba(56, 189, 248, 0.22);
  border-radius: var(--radius-lg);
}

.cta-bar p {
  margin: 0 0 1rem;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  max-width: 40rem;
  margin-left: auto;
  margin-right: auto;
}

.cta-bar .btn-primary {
  min-width: min(100%, 280px);
}

.cta-bar--tight {
  margin-top: 1.5rem;
}

.hero .cta-bar {
  margin-top: 1.75rem;
}

/* Mobile sticky call bar */

.mobile-call-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 90;
  padding: 0.65rem 1rem calc(0.65rem + env(safe-area-inset-bottom, 0));
  background: rgba(15, 20, 25, 0.92);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--color-border);
  box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.4);
}

.mobile-call-bar a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.85rem 1rem;
  background: linear-gradient(135deg, var(--color-accent-warm), #f59e0b);
  color: #1c1917;
  font-weight: 800;
  font-size: 1rem;
  border-radius: var(--radius);
  text-decoration: none;
}

.mobile-call-bar a:hover {
  color: #1c1917;
  filter: brightness(1.05);
}

@media (max-width: 768px) {
  .mobile-call-bar {
    display: block;
  }

  body {
    padding-bottom: calc(4.25rem + env(safe-area-inset-bottom, 0));
  }
}

.btn-ghost {
  color: var(--color-text-muted);
  font-weight: 600;
  text-decoration: none;
  padding: 0.5rem 0;
}

.btn-ghost:hover {
  color: var(--color-text);
}

.hero-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow);
}

.hero-card h2 {
  font-family: var(--font-display);
  font-size: 1.125rem;
  margin: 0 0 1rem;
  font-weight: 600;
}

.hero-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.hero-card li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

.hero-card li:last-child {
  border-bottom: none;
}

.hero-card li::before {
  content: "";
  width: 8px;
  height: 8px;
  margin-top: 0.45rem;
  border-radius: 50%;
  background: var(--color-accent);
  flex-shrink: 0;
}

/* Sections */

section {
  padding: 4rem 1.5rem;
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-alt {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 3.5vw, 2.1rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 0.75rem;
}

.section-intro {
  color: var(--color-text-muted);
  font-size: 1.0625rem;
  max-width: 62ch;
  margin: 0 0 2.5rem;
}

/* Two columns */

.two-col {
  display: grid;
  gap: 2rem;
}

@media (min-width: 768px) {
  .two-col {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
  }
}

.prose p {
  margin: 0 0 1rem;
  color: var(--color-text-muted);
}

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

/* Cards grid */

.cards-3 {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 700px) {
  .cards-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  height: 100%;
}

.card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  margin: 0 0 0.75rem;
  font-weight: 600;
}

.card p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.98rem;
}

.card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius);
  background: var(--color-accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  font-size: 1.25rem;
}

/* Compare table style boxes */

.compare-grid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .compare-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.compare-box {
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 1px solid var(--color-border);
}

.compare-box.tutelato {
  background: linear-gradient(160deg, rgba(148, 163, 184, 0.12), var(--color-surface));
}

.compare-box.libero {
  background: linear-gradient(160deg, rgba(56, 189, 248, 0.12), var(--color-surface));
  border-color: rgba(56, 189, 248, 0.25);
}

.compare-box h3 {
  font-family: var(--font-display);
  margin: 0 0 1rem;
  font-size: 1.35rem;
}

.compare-box ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.compare-box li {
  padding: 0.5rem 0;
  padding-left: 1.25rem;
  position: relative;
  color: var(--color-text-muted);
}

.compare-box li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--color-accent-warm);
}

/* Bill breakdown */

.bill-split {
  display: grid;
  gap: 2rem;
}

@media (min-width: 800px) {
  .bill-split {
    grid-template-columns: 1fr 1fr;
  }
}

.bill-block {
  background: var(--color-surface-elevated);
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 1px solid var(--color-border);
}

.bill-block h3 {
  font-family: var(--font-display);
  margin: 0 0 1.25rem;
}

.meter {
  margin: 0;
  padding: 0;
  list-style: none;
}

.meter li {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.85rem;
}

.meter li:last-child {
  margin-bottom: 0;
}

.meter-label {
  flex: 0 0 42%;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.meter-bar-wrap {
  flex: 1;
  height: 8px;
  background: var(--color-bg);
  border-radius: 4px;
  overflow: hidden;
}

.meter-bar {
  height: 100%;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-warm));
}

.meter-pct {
  flex: 0 0 3rem;
  text-align: right;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
}

.note {
  margin-top: 1.25rem;
  padding: 1rem;
  background: rgba(251, 191, 36, 0.08);
  border-left: 3px solid var(--color-accent-warm);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* Tips lists */

.tips-grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 768px) {
  .tips-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.tips-block h3 {
  font-family: var(--font-display);
  margin: 0 0 1rem;
}

.tips-block ul {
  margin: 0;
  padding-left: 1.15rem;
  color: var(--color-text-muted);
}

.tips-block li {
  margin-bottom: 0.5rem;
}

/* Steps */

.steps {
  display: grid;
  gap: 1.5rem;
  counter-reset: step;
}

@media (min-width: 700px) {
  .steps {
    grid-template-columns: repeat(4, 1fr);
  }
}

.step {
  position: relative;
  padding: 1.5rem;
  background: var(--color-surface-elevated);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.step::before {
  counter-increment: step;
  content: counter(step);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  background: var(--color-accent);
  color: var(--color-bg);
  font-weight: 800;
  font-size: 0.95rem;
  border-radius: 50%;
  margin-bottom: 1rem;
}

.step h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin: 0 0 0.5rem;
}

.step p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* Why us */

.why-grid {
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 640px) {
  .why-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .why-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.why-item {
  text-align: center;
  padding: 1.5rem 1rem;
}

.why-stat {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 0.35rem;
}

.why-item h3 {
  font-size: 1rem;
  margin: 0 0 0.5rem;
}

.why-item p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* FAQ */

.faq-list {
  max-width: 720px;
}

details.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  background: var(--color-surface-elevated);
  overflow: hidden;
}

details.faq-item summary {
  padding: 1.1rem 1.25rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

details.faq-item summary::-webkit-details-marker {
  display: none;
}

details.faq-item summary::after {
  content: "+";
  font-size: 1.25rem;
  color: var(--color-accent);
  font-weight: 300;
}

details.faq-item[open] summary::after {
  content: "−";
}

details.faq-item .faq-body {
  padding: 0 1.25rem 1.15rem;
  color: var(--color-text-muted);
  font-size: 0.98rem;
}

/* CTA strip */

.cta-strip {
  text-align: center;
  padding: 3rem 1.5rem;
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.2), rgba(251, 191, 36, 0.1));
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.cta-strip h2 {
  font-family: var(--font-display);
  margin: 0 0 0.5rem;
  font-size: clamp(1.4rem, 3vw, 1.85rem);
}

.cta-strip p {
  margin: 0 0 1.5rem;
  color: var(--color-text-muted);
}

/* Footer */

.site-footer {
  padding: 3rem 1.5rem 2rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  gap: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 1.2fr 1fr 1fr;
  }
}

.footer-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
}

.footer-brand span {
  color: var(--color-accent);
}

.footer-col p,
.footer-col address {
  margin: 0;
  font-style: normal;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer-partner-line {
  display: block;
  margin-top: 0.35rem;
}

.footer-col h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin: 0 0 0.75rem;
}

.footer-col a {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.9rem;
}

.disclaimer {
  margin-top: 2rem;
  padding: 1.25rem;
  background: var(--color-surface);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.55;
}

.disclaimer p {
  margin: 0 0 1rem;
}

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

.footer-phone-line {
  margin-top: 1rem;
}

.footer-phone-line .btn-primary {
  width: 100%;
  max-width: 320px;
}

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

.copyright {
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* Service links row */

.service-links {
  display: grid;
  gap: 1rem;
}

@media (min-width: 600px) {
  .service-links {
    grid-template-columns: repeat(3, 1fr);
  }
}

.service-link {
  display: block;
  padding: 1.5rem;
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s, transform 0.2s;
}

.service-link:hover {
  border-color: rgba(56, 189, 248, 0.4);
  transform: translateY(-2px);
  color: inherit;
}

.service-link h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin: 0 0 0.5rem;
  color: var(--color-text);
}

.service-link p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}