/* =========================================================
   ENERGY SERVICE TECH — Global Stylesheet
   Modern · Professional · Renewable Energy Focused
   ========================================================= */

/* ---------- ELEMENTI MOBILE-ONLY (nascosti su desktop) ---------- */
#mob-menu,
#sticky-bar,
.mob-links,
.mob-actions { display: none; }

/* ---------- RESET & BASE ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-0:         #090909;
  --bg-1:         #111111;
  --bg-2:         #1a1a1a;
  --bg-card:      #202020;
  --bg-card-h:    #2a2a2a;

  --green:        #cc1f1f;
  --green-light:  #e84444;
  --green-glow:   rgba(204,31,31,.16);
  --solar:        #a81818;
  --solar-light:  #cc1f1f;
  --solar-glow:   rgba(168,24,24,.12);

  --text-1:       #f0f0f0;
  --text-2:       #a0a0a0;
  --text-3:       #666666;
  --border:       rgba(255,255,255,.08);
  --border-green: rgba(204,31,31,.35);

  --nav-h:        76px;
  --radius:       14px;
  --radius-sm:    8px;
  --shadow:       0 4px 32px rgba(0,0,0,.55);
  --shadow-green: 0 0 32px rgba(204,31,31,.18);

  --ff:           'Inter', system-ui, sans-serif;
  --fw-n:         400;
  --fw-m:         500;
  --fw-sb:        600;
  --fw-b:         700;
  --fw-xb:        800;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--ff);
  background: var(--bg-0);
  color: var(--text-1);
  line-height: 1.6;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a  { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ---------- TYPOGRAPHY ---------- */
h1,h2,h3,h4 { line-height: 1.2; font-weight: var(--fw-b); }
h1 { font-size: clamp(2.2rem, 5vw, 4rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.6rem); }
h3 { font-size: 1.2rem; }

.highlight  { color: var(--green); }
.highlight-s{ color: var(--solar); }

/* ---------- NAVBAR ---------- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 1000;
  display: flex;
  align-items: center;
  padding: 0 5%;
  background: rgba(9,9,9,.93);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: background .3s;
  overflow: visible;
}

.nav-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.nav-logo img {
  height: 62px;
  width: auto;
  display: block;
  filter: drop-shadow(0 0 6px rgba(204,31,31,.25));
  transition: filter .2s;
}
.nav-logo:hover img {
  filter: drop-shadow(0 0 10px rgba(204,31,31,.45));
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  margin-left: auto;
}
.nav-links a {
  font-size: .9rem;
  font-weight: var(--fw-m);
  color: var(--text-2);
  transition: color .2s;
  white-space: nowrap;
}
.nav-links a:hover, .nav-links a.active { color: var(--text-1); }
.nav-links a.nav-cta {
  background: var(--green);
  color: #fff;
  padding: .45rem 1.2rem;
  border-radius: 99px;
  font-weight: var(--fw-sb);
  transition: background .2s, transform .15s;
}
.nav-links a.nav-cta:hover { background: var(--green-light); transform: translateY(-1px); }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  margin-left: auto;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text-1);
  border-radius: 2px;
  transition: .3s;
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 1.8rem;
  border-radius: 99px;
  font-weight: var(--fw-sb);
  font-size: .95rem;
  cursor: pointer;
  border: none;
  transition: all .2s;
  white-space: nowrap;
}
.btn-primary {
  background: var(--green);
  color: #fff;
  box-shadow: 0 4px 18px rgba(16,185,129,.35);
}
.btn-primary:hover { background: var(--green-light); transform: translateY(-2px); box-shadow: 0 6px 24px rgba(16,185,129,.45); }

.btn-solar {
  background: var(--solar);
  color: #ffffff;
  box-shadow: 0 4px 18px rgba(168,24,24,.35);
}
.btn-solar:hover { background: var(--green); transform: translateY(-2px); box-shadow: 0 6px 24px rgba(204,31,31,.45); }

.btn-outline {
  background: transparent;
  color: var(--text-1);
  border: 1px solid var(--border);
}
.btn-outline:hover { border-color: var(--green); color: var(--green); transform: translateY(-2px); }

.btn-lg { padding: 1rem 2.4rem; font-size: 1rem; }

/* ---------- SECTION COMMONS ---------- */
section { padding: 90px 5%; }
.section-inner { max-width: 1200px; margin: 0 auto; }

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-size: .75rem;
  font-weight: var(--fw-sb);
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 1rem;
}
.section-tag::before {
  content: '';
  display: block;
  width: 18px; height: 2px;
  background: var(--green);
  border-radius: 2px;
}

.section-title { margin-bottom: .75rem; }
.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-2);
  max-width: 580px;
  margin-bottom: 2.5rem;
}

/* ---------- DIVIDER ---------- */
.divider {
  width: 60px; height: 3px;
  background: linear-gradient(90deg, var(--green), var(--solar));
  border-radius: 2px;
  margin: 1rem 0 2rem;
}

/* ---------- CARDS ---------- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: border-color .3s, transform .3s, box-shadow .3s;
}
.card:hover {
  border-color: var(--border-green);
  transform: translateY(-4px);
  box-shadow: var(--shadow-green);
}

/* ---------- HERO SHARED ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-h) + 60px) 5% 80px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(7,9,26,.92) 0%,
    rgba(7,9,26,.75) 50%,
    rgba(7,9,26,.55) 100%
  );
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-size: .78rem;
  font-weight: var(--fw-sb);
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--solar);
  margin-bottom: 1.4rem;
  padding: .4rem 1rem;
  border: 1px solid rgba(245,158,11,.3);
  border-radius: 99px;
  background: rgba(245,158,11,.07);
}
.hero h1 { margin-bottom: 1.2rem; }
.hero-sub {
  font-size: 1.15rem;
  color: var(--text-2);
  max-width: 560px;
  margin-bottom: 2.4rem;
  line-height: 1.7;
}
.hero-ctas { display: flex; gap: 1rem; flex-wrap: wrap; }

/* Floating badge in hero */
.hero-badge {
  position: absolute;
  bottom: 48px; right: 5%;
  background: var(--bg-card);
  border: 1px solid var(--border-green);
  border-radius: var(--radius);
  padding: 1.2rem 1.8rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: var(--shadow-green);
  z-index: 2;
}
.hero-badge .badge-num {
  font-size: 2rem;
  font-weight: var(--fw-xb);
  color: var(--green);
  line-height: 1;
}
.hero-badge .badge-label { font-size: .8rem; color: var(--text-2); }

/* ---------- SERVICES GRID ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}
.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.8rem;
  display: flex;
  flex-direction: column;
  gap: .8rem;
  transition: all .3s;
  text-decoration: none;
  color: inherit;
}
.service-card:hover {
  border-color: var(--border-green);
  transform: translateY(-5px);
  box-shadow: var(--shadow-green);
}
.service-card.featured {
  grid-column: span 2;
  background: linear-gradient(135deg, #1f0808, #111111);
  border-color: var(--border-green);
  position: relative;
  overflow: hidden;
}
.service-card.featured::before {
  content: '';
  position: absolute;
  top: -40px; right: -40px;
  width: 160px; height: 160px;
  background: radial-gradient(circle, rgba(16,185,129,.2), transparent 70%);
  border-radius: 50%;
}
.service-icon {
  width: 52px; height: 52px;
  background: var(--green-glow);
  border: 1px solid var(--border-green);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}
.service-card.featured .service-icon { background: rgba(16,185,129,.15); }
.service-card h3 { font-size: 1.05rem; }
.service-card p { font-size: .88rem; color: var(--text-2); line-height: 1.6; flex: 1; }
.service-link {
  font-size: .85rem;
  font-weight: var(--fw-sb);
  color: var(--green);
  display: flex;
  align-items: center;
  gap: .3rem;
  margin-top: .5rem;
  transition: gap .2s;
}
.service-card:hover .service-link { gap: .6rem; }
.service-badge-featured {
  position: absolute;
  top: 1.2rem; right: 1.2rem;
  background: var(--green);
  color: #fff;
  font-size: .65rem;
  font-weight: var(--fw-sb);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: .3rem .7rem;
  border-radius: 99px;
}

/* ---------- STATS / NUMBERS ---------- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.stat-item {
  background: var(--bg-card);
  padding: 2.5rem 2rem;
  text-align: center;
}
.stat-num {
  font-size: 2.8rem;
  font-weight: var(--fw-xb);
  color: var(--green);
  line-height: 1;
  margin-bottom: .4rem;
}
.stat-label { font-size: .85rem; color: var(--text-2); }

/* ---------- WHY US ---------- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.why-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  transition: all .3s;
}
.why-card:hover { border-color: var(--border-green); transform: translateY(-4px); }
.why-icon {
  font-size: 2.2rem;
  margin-bottom: 1.2rem;
}
.why-card h3 { margin-bottom: .6rem; }
.why-card p { font-size: .9rem; color: var(--text-2); }

/* ---------- CTA BAND ---------- */
.cta-band {
  background: linear-gradient(135deg, #1a0505, #111111);
  border-top: 1px solid var(--border-green);
  border-bottom: 1px solid var(--border-green);
  padding: 80px 5%;
  text-align: center;
}
.cta-band h2 { margin-bottom: .8rem; }
.cta-band p { color: var(--text-2); max-width: 560px; margin: 0 auto 2rem; font-size: 1rem; }
.cta-band .btn-group { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ---------- CLIENTS ---------- */
.clients-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}
.client-chip {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: .5rem 1.4rem;
  font-size: .85rem;
  color: var(--text-2);
  font-weight: var(--fw-m);
  transition: border-color .2s, color .2s;
}
.client-chip:hover { border-color: var(--border-green); color: var(--green); }

/* ---------- CLIENT LOGO LINKS ---------- */
.client-logo-link {
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:48px;
  filter: brightness(0) invert(0.6);
  opacity:.65;
  transition:filter .35s ease, opacity .35s ease;
  text-decoration:none;
}
.client-logo-link:hover { filter:none; opacity:1; }
/* Logo con sfondo chiaro ma con filter hover (es. Open Fiber, Azzurro ZCS) */
.client-logo-link--light { background:#fff; border-radius:6px; padding:3px 8px; }
.client-logo-link--light:hover { filter:none; opacity:1; }
/* Logo sfondo chiaro senza filter — sempre a colori (es. MG Project) */
.client-logo-link--light-nf { filter:none !important; background:#fff; border-radius:6px; padding:3px 8px; }
.client-logo-link--light-nf:hover { filter:none !important; opacity:1; }
/* Logo bianco su sfondo scuro (es. Weco) */
.client-logo-link--dark { filter:none !important; background:#2a2a2a; border-radius:6px; padding:3px 8px; }
.client-logo-link--dark:hover { filter:none !important; opacity:1; }
.client-logo-img { max-height:38px; max-width:130px; width:auto; object-fit:contain; display:block; }
.client-logo-text { font-size:.8rem; font-weight:700; letter-spacing:.08em; color:var(--text-2); text-transform:uppercase; white-space:nowrap; }

/* ---------- COMPETENZE LIST ---------- */
.comp-list {
  display: flex;
  flex-direction: column;
  gap: .6rem;
}
.comp-item {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  font-size: .95rem;
}
.comp-item::before {
  content: '✓';
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 22px; height: 22px;
  background: var(--green-glow);
  border: 1px solid var(--border-green);
  border-radius: 50%;
  color: var(--green);
  font-size: .7rem;
  font-weight: var(--fw-b);
  margin-top: 2px;
}

/* ---------- TECH BADGE ---------- */
.tech-badges {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin-top: 1rem;
}
.tech-badge {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .35rem .9rem;
  font-size: .8rem;
  font-weight: var(--fw-m);
  color: var(--text-2);
}

/* ---------- PAGE HERO (sub-pages) ---------- */
.page-hero {
  padding-top: calc(var(--nav-h) + 80px);
  padding-bottom: 80px;
  padding-left: 5%;
  padding-right: 5%;
  background: linear-gradient(180deg, var(--bg-1) 0%, var(--bg-0) 100%);
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: -60px; right: -60px;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(204,31,31,.12) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.page-hero-inner { max-width: 1200px; margin: 0 auto; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .82rem;
  color: var(--text-3);
  margin-bottom: 1.5rem;
}
.breadcrumb a { color: var(--text-3); transition: color .2s; }
.breadcrumb a:hover { color: var(--green); }
.breadcrumb span { color: var(--text-2); }

/* ---------- FEATURE ROW (image+text) ---------- */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}
.feature-row.reverse { direction: rtl; }
.feature-row.reverse > * { direction: ltr; }
.feature-img {
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/3;
}
.feature-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .5s;
}
.feature-img:hover img { transform: scale(1.04); }
.feature-text { display: flex; flex-direction: column; gap: 1.2rem; }
.feature-text p { color: var(--text-2); font-size: .95rem; line-height: 1.75; }

/* ---------- CONTACT ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 3rem;
  max-width: 1200px;
  margin: 0 auto;
}
.contact-info { display: flex; flex-direction: column; gap: 1.5rem; }
.contact-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}
.contact-icon {
  width: 44px; height: 44px;
  background: var(--green-glow);
  border: 1px solid var(--border-green);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.contact-item h4 { font-size: .8rem; text-transform: uppercase; letter-spacing: 1px; color: var(--text-3); margin-bottom: .25rem; }
.contact-item p, .contact-item a { font-size: .95rem; color: var(--text-1); }
.contact-item a:hover { color: var(--green); }

.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { display: flex; flex-direction: column; gap: .4rem; }
.form-group label { font-size: .82rem; font-weight: var(--fw-m); color: var(--text-2); }
.form-group input,
.form-group select,
.form-group textarea {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .75rem 1rem;
  font-size: .92rem;
  color: var(--text-1);
  font-family: var(--ff);
  outline: none;
  transition: border-color .2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--green); }
.form-group textarea { resize: vertical; min-height: 130px; }
.form-group select option { background: var(--bg-2); }

/* ---------- FOOTER ---------- */
.footer {
  background: var(--bg-1);
  border-top: 1px solid var(--border);
  padding: 64px 5% 0;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 48px;
}
.footer-brand p {
  font-size: .88rem;
  color: var(--text-3);
  line-height: 1.7;
  margin: 1rem 0 1.5rem;
  max-width: 280px;
}
.footer-logo img {
  height: 80px;
  width: auto;
  display: block;
  filter: brightness(1.05);
}
.footer-col h4 {
  font-size: .8rem;
  font-weight: var(--fw-sb);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 1.2rem;
}
.footer-col ul { display: flex; flex-direction: column; gap: .65rem; }
.footer-col a {
  font-size: .88rem;
  color: var(--text-2);
  transition: color .2s;
}
.footer-col a:hover { color: var(--green); }
.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: .6rem;
  font-size: .85rem;
  color: var(--text-2);
  margin-bottom: .65rem;
}
.footer-contact-item span:first-child { min-width: 18px; }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-bottom p { font-size: .8rem; color: var(--text-3); }
.footer-bottom a { color: var(--text-3); transition: color .2s; }
.footer-bottom a:hover { color: var(--green); }

/* ---------- UTILITIES ---------- */
.text-center { text-align: center; }
.text-center .section-subtitle { margin-left: auto; margin-right: auto; }
.text-center .divider { margin-left: auto; margin-right: auto; }
.mt-1 { margin-top: .5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-4 { margin-bottom: 2rem; }
.gap-1 { gap: .5rem; }

/* ---------- SCROLL FADE IN ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: none;
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 1024px) {
  .stats-grid { grid-template-columns: repeat(2,1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .feature-row { grid-template-columns: 1fr; gap: 2rem; }
  .feature-row.reverse { direction: ltr; }
  .why-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

/* Mobile gestito interamente da mobile.css (caricato solo su max-width:768px) */