/* ===========================================================
   MDF — Impianti elettrici, fotovoltaico e sicurezza
   Palette coerente col brand del gestionale:
   antracite + accento arancione
   =========================================================== */

:root {
  --ink:       #1f2733;
  --ink-2:     #2b3545;
  --ink-3:     #3a4656;
  --accent:    #f5833c;
  --accent-2:  #ff9d5c;
  --accent-dk: #e06b22;
  --muted:     #64748b;
  --muted-2:   #94a3b8;
  --bg:        #ffffff;
  --bg-soft:   #f6f8fa;
  --bg-ink:    #1b2230;
  --line:      #e6eaf0;
  --line-2:    #d8dee8;
  --radius:    14px;
  --radius-sm: 10px;
  --shadow:    0 10px 30px rgba(24, 33, 48, .08);
  --shadow-lg: 0 24px 60px rgba(24, 33, 48, .14);
  --maxw:      1140px;
  --font: "Segoe UI", Roboto, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: var(--accent-dk); text-decoration: none; }
a:hover { text-decoration: underline; }

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

.eyebrow {
  display: inline-block;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent-dk);
  margin: 0 0 14px;
}

.section { padding: 86px 0; }
.section--soft { background: var(--bg-soft); }
.section__head { max-width: 680px; margin: 0 0 48px; }
.section__head.center { margin-left: auto; margin-right: auto; text-align: center; }

h1, h2, h3 { color: var(--ink); line-height: 1.2; margin: 0 0 .5em; }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.4rem); font-weight: 800; letter-spacing: -.01em; }
h3 { font-size: 1.22rem; font-weight: 700; }
p { margin: 0 0 1rem; color: #43506180; }
p { color: #434f61; }

.lead { font-size: 1.12rem; color: #47566a; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .55em;
  font-weight: 700;
  font-size: .98rem;
  padding: 13px 24px;
  border-radius: 999px;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn--primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dk) 100%);
  color: #fff;
  box-shadow: 0 8px 20px rgba(224, 107, 34, .28);
}
.btn--primary:hover { box-shadow: 0 12px 26px rgba(224, 107, 34, .38); color:#fff; }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line-2); }
.btn--ghost:hover { border-color: var(--ink); color: var(--ink); }
.btn--light { background:#fff; color: var(--ink); }
.btn--light:hover { color: var(--accent-dk); }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.88);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.nav__logo img { height: 34px; width: auto; }
.nav__links {
  display: flex;
  align-items: center;
  gap: 30px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav__links a {
  color: var(--ink-2);
  font-weight: 600;
  font-size: .96rem;
}
.nav__links a:hover { color: var(--accent-dk); text-decoration: none; }
.nav__cta { display: flex; align-items: center; gap: 14px; }
.nav__toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav__toggle span {
  display: block; width: 24px; height: 2px; background: var(--ink);
  margin: 5px 0; border-radius: 2px; transition: .2s;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background:
    radial-gradient(1100px 500px at 80% -10%, rgba(245,131,60,.14), transparent 60%),
    linear-gradient(180deg, #fbfcfe 0%, #ffffff 100%);
  padding: 92px 0 84px;
  overflow: hidden;
}
.hero__grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 56px;
  align-items: center;
}
.hero h1 {
  font-size: clamp(2.1rem, 5vw, 3.35rem);
  font-weight: 800;
  letter-spacing: -.02em;
  margin-bottom: .35em;
}
.hero h1 .hl { color: var(--accent-dk); }
.hero .lead { font-size: 1.18rem; max-width: 46ch; }
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 30px; }
.hero__badges {
  display: flex; flex-wrap: wrap; gap: 10px 22px;
  margin-top: 34px; padding-top: 26px; border-top: 1px solid var(--line);
}
.hero__badge { display: flex; align-items: center; gap: 9px; font-size: .9rem; font-weight: 600; color: var(--ink-2); }
.hero__badge svg { flex: none; }

.hero__panel {
  background: var(--bg-ink);
  border-radius: 20px;
  padding: 34px;
  color: #cdd6e4;
  box-shadow: var(--shadow-lg);
  position: relative;
}
.hero__panel h3 { color: #fff; font-size: 1.05rem; margin-bottom: 20px; }
.pillars { display: grid; gap: 14px; }
.pillar {
  display: flex; align-items: center; gap: 14px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 12px;
  padding: 14px 16px;
}
.pillar__ic {
  flex: none; width: 42px; height: 42px; border-radius: 10px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dk) 100%);
}
.pillar__t { font-weight: 700; color: #fff; font-size: .98rem; }
.pillar__s { font-size: .82rem; color: #93a0b4; }

/* ---------- Stats ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat { text-align: center; }
.stat__n { font-size: 2.1rem; font-weight: 800; color: var(--ink); letter-spacing: -.02em; }
.stat__n .u { color: var(--accent-dk); }
.stat__l { font-size: .92rem; color: var(--muted); font-weight: 600; }

/* ---------- Services ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 28px;
  transition: transform .18s ease, box-shadow .2s ease, border-color .2s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--line-2); }
.card__ic {
  width: 52px; height: 52px; border-radius: 12px;
  display: grid; place-items: center; margin-bottom: 20px;
  background: linear-gradient(135deg, #fff2e8 0%, #ffe3cf 100%);
}
.card__ic svg { color: var(--accent-dk); }
.card h3 { margin-bottom: .4em; }
.card p { font-size: .96rem; margin-bottom: .9rem; }
.card ul { margin: 0; padding: 0; list-style: none; }
.card li {
  font-size: .9rem; color: var(--ink-2); padding: 4px 0 4px 22px; position: relative;
}
.card li::before {
  content: ""; position: absolute; left: 0; top: 11px;
  width: 7px; height: 7px; border-radius: 2px; background: var(--accent);
}

/* ---------- Why / features ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px 40px; }
.feature { display: flex; gap: 16px; }
.feature__ic {
  flex: none; width: 44px; height: 44px; border-radius: 10px;
  display: grid; place-items: center; background: var(--bg-soft); color: var(--accent-dk);
  border: 1px solid var(--line);
}
.feature h3 { font-size: 1.05rem; margin-bottom: .2em; }
.feature p { font-size: .94rem; margin: 0; }

/* ---------- Partner band ---------- */
.band {
  background: var(--bg-ink);
  color: #dfe6f0;
  border-radius: 22px;
  padding: 54px 48px;
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 40px;
  align-items: center;
}
.band h2 { color: #fff; }
.band p { color: #aab6c8; margin-bottom: 0; }
.band__cta { display: flex; justify-content: flex-end; }
@media (max-width: 760px){ .band__cta{ justify-content:flex-start; } }

/* ---------- Brands ---------- */
.brands { display: flex; flex-wrap: wrap; gap: 14px 28px; align-items: center; }
.brand-chip {
  font-weight: 700; color: var(--ink-2);
  background: #fff; border: 1px solid var(--line);
  border-radius: 999px; padding: 9px 18px; font-size: .92rem;
}

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.info-list { list-style: none; margin: 0; padding: 0; }
.info-list li { display: flex; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.info-list li:last-child { border-bottom: 0; }
.info-list .ic {
  flex: none; width: 40px; height: 40px; border-radius: 10px;
  display: grid; place-items: center; background: var(--bg-soft); color: var(--accent-dk);
  border: 1px solid var(--line);
}
.info-list .k { font-size: .8rem; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .05em; }
.info-list .v { font-weight: 600; color: var(--ink); }

.form { display: grid; gap: 14px; }
.form label { font-size: .85rem; font-weight: 600; color: var(--ink-2); display: block; margin-bottom: 5px; }
.form input, .form textarea {
  width: 100%; padding: 12px 14px; border: 1.5px solid var(--line-2);
  border-radius: var(--radius-sm); font: inherit; color: var(--ink); background: #fff;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.form input:focus, .form textarea:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(245,131,60,.15);
}
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form .note { font-size: .82rem; color: var(--muted); }

/* ---------- Footer ---------- */
.footer { background: var(--bg-ink); color: #93a0b4; padding: 56px 0 28px; }
.footer__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }
.footer__logo { height: 32px; margin-bottom: 16px; filter: brightness(0) invert(1); opacity: .95; }
.footer h4 { color: #fff; font-size: .95rem; margin: 0 0 14px; text-transform: uppercase; letter-spacing: .06em; }
.footer ul { list-style: none; margin: 0; padding: 0; }
.footer li { padding: 5px 0; }
.footer a { color: #aab6c8; font-size: .94rem; }
.footer a:hover { color: #fff; text-decoration: none; }
.footer__bottom {
  margin-top: 40px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.08);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px;
  font-size: .85rem; color: #6c7a90;
}
.footer__bottom a { color: #8795a9; }
.placeholder { color: var(--accent-2); font-style: italic; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; gap: 40px; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); gap: 32px 24px; }
  .feature-grid { grid-template-columns: 1fr; }
  .band { grid-template-columns: 1fr; padding: 40px 32px; }
  .contact-grid { grid-template-columns: 1fr; gap: 36px; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) {
  .nav__links, .nav__cta .btn--ghost { display: none; }
  .nav__toggle { display: block; }
  .nav.open .nav__links {
    display: flex; position: absolute; top: 72px; left: 0; right: 0;
    flex-direction: column; align-items: flex-start; gap: 4px;
    background: #fff; border-bottom: 1px solid var(--line); padding: 16px 24px;
  }
  .nav.open .nav__links a { padding: 8px 0; width: 100%; }
  .section { padding: 64px 0; }
  .cards { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }
  .form .row { grid-template-columns: 1fr; }
}