/* =========================================================
   APEIRON S.r.l. — Foglio di stile principale
   Palette derivata dal logo aziendale
   ========================================================= */

:root {
  --dark: #1a171b;
  --teal: #18a096;
  --teal-dark: #09645e;
  --teal-light: #7fd0c4;
  --bg: #ffffff;
  --bg-alt: #f4faf9;
  --border: #e2eeec;
  --text: #2b2b2d;
  --text-muted: #5c6669;
  --radius: 10px;
  --shadow: 0 4px 20px rgba(9, 100, 94, 0.08);
  --max-width: 1180px;
  --font: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  font-size: 16px;
}

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

a { color: var(--teal-dark); text-decoration: none; }
a:hover { color: var(--teal); }

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

h1, h2, h3, h4 {
  color: var(--dark);
  line-height: 1.25;
  font-weight: 700;
  margin: 0 0 16px;
}

h1 { font-size: 2.4rem; }
h2 { font-size: 1.9rem; }
h3 { font-size: 1.35rem; }
p { margin: 0 0 16px; color: var(--text); }
.lead { font-size: 1.15rem; color: var(--text-muted); }

.section { padding: 72px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark {
  background: linear-gradient(120deg, var(--teal-dark), var(--teal));
  color: #fff;
}
.section-dark h1, .section-dark h2, .section-dark h3, .section-dark p { color: #fff; }

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--teal);
  margin-bottom: 10px;
  display: block;
}

.btn {
  display: inline-block;
  padding: 13px 28px;
  border-radius: 30px;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.2s ease;
}
.btn-primary {
  background: var(--teal);
  color: #fff;
}
.btn-primary:hover { background: var(--teal-dark); color: #fff; }
.btn-outline {
  border-color: #fff;
  color: #fff;
}
.btn-outline:hover { background: #fff; color: var(--teal-dark); }
.btn-outline-dark {
  border-color: var(--teal-dark);
  color: var(--teal-dark);
}
.btn-outline-dark:hover { background: var(--teal-dark); color: #fff; }

/* Header */
header.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 4px 16px rgba(9, 100, 94, 0.12);
}
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 24px;
}
.navbar .logo img { height: 55px; transition: transform 0.25s ease; }
.navbar .logo:hover img { transform: scale(1.08); }
.nav-links {
  display: flex;
  gap: 28px;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  color: var(--dark);
  font-weight: 600;
  font-size: 0.95rem;
}
.nav-links a:hover { color: var(--teal); }
.nav-links .btn-primary { color: #fff; font-size: 0.9rem; padding: 10px 22px; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span {
  display: block;
  width: 26px;
  height: 3px;
  margin: 5px 0;
  background: var(--dark);
  border-radius: 2px;
}

/* Hero */
.hero {
  position: relative;
  background:
    linear-gradient(120deg, rgba(9,100,94,0.93) 0%, rgba(24,160,150,0.88) 100%),
    url("https://images.unsplash.com/photo-1454165804606-c3d57bc86b40?auto=format&fit=crop&w=1600&q=80") center/cover no-repeat;
  color: #fff;
  padding: 96px 0 84px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(rgba(255,255,255,0.35) 2px, transparent 2px),
    radial-gradient(rgba(255,255,255,0.2) 3px, transparent 3px);
  background-size: 90px 90px, 140px 140px;
  background-position: 0 0, 40px 60px;
  opacity: 0.5;
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 90px;
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 120' preserveAspectRatio='none'><path d='M0,40 C300,100 900,0 1200,60 L1200,120 L0,120 Z' fill='%23ffffff'/></svg>") bottom/cover no-repeat;
  pointer-events: none;
}
.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}
.hero h1 { color: #fff; font-size: 2.6rem; }
.hero p { color: rgba(255,255,255,0.95); font-size: 1.1rem; }
.hero-actions { display: flex; gap: 14px; margin-top: 26px; flex-wrap: wrap; }
.hero-card {
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}
.hero-card ul { margin: 0; padding-left: 20px; }
.hero-card li { margin-bottom: 10px; }

/* Cards / Grid */
.grid {
  display: grid;
  gap: 28px;
}
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: var(--shadow);
  height: 100%;
}
.card .icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--bg-alt);
  color: var(--teal-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 18px;
}
.card h3 { margin-bottom: 10px; }
.card a.card-link { font-weight: 600; font-size: 0.92rem; }

/* Stats */
.stats { display: flex; gap: 40px; flex-wrap: wrap; margin-top: 30px; }
.stat b { display: block; font-size: 2rem; color: var(--teal-dark); }
.stat span { color: var(--text-muted); font-size: 0.9rem; }

/* Blog / News listing */
.post-list { display: grid; gap: 24px; }
.post-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  background: #fff;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.post-item .meta {
  font-size: 0.82rem;
  color: var(--teal-dark);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  background: var(--bg-alt);
  color: var(--teal-dark);
  margin-right: 6px;
}
.badge-open { background: #e3f7ef; color: #0d8a4f; }
.badge-closing { background: #fdecdc; color: #b5591a; }
.badge-closed { background: #eee; color: #888; }

.filters { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 30px; }
.filters button {
  border: 1px solid var(--border);
  background: #fff;
  padding: 8px 18px;
  border-radius: 20px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.filters button.active, .filters button:hover {
  background: var(--teal);
  color: #fff;
  border-color: var(--teal);
}

/* Article */
.article-body h2 { margin-top: 34px; }
.article-body ul { padding-left: 20px; }
.article-meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 24px;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 40px;
}
.info-box {
  background: var(--bg-alt);
  border-radius: var(--radius);
  padding: 30px;
  border: 1px solid var(--border);
}
.info-box p { margin-bottom: 10px; }
.info-box strong { color: var(--dark); }

form.contact-form { display: grid; gap: 16px; }
form.contact-form label {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--dark);
  margin-bottom: 6px;
  display: block;
}
form.contact-form input,
form.contact-form select,
form.contact-form textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.95rem;
  background: #fff;
}
form.contact-form input:focus,
form.contact-form select:focus,
form.contact-form textarea:focus {
  outline: none;
  border-color: var(--teal);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.consent { display: flex; gap: 10px; align-items: flex-start; font-size: 0.85rem; color: var(--text-muted); }
.consent input { width: auto; margin-top: 4px; }
.form-note { font-size: 0.8rem; color: var(--text-muted); }

/* Footer */
footer.site-footer {
  background: var(--dark);
  color: #cfd6d5;
  padding: 56px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 36px;
}
footer.site-footer h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; }
footer.site-footer a { color: #cfd6d5; font-size: 0.9rem; }
footer.site-footer a:hover { color: var(--teal-light); }
footer.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.footer-logo img { height: 36px; margin-bottom: 14px; filter: brightness(0) invert(1); transition: transform 0.25s ease; }
.footer-logo:hover img { transform: scale(1.08); }
.footer-logo { display: inline-block; }
.footer-grid p { color: #b7c0be; }
.footer-grid > div:first-child p { color: #ffffff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.82rem;
  color: #9aa5a3;
}
.footer-bottom a { color: #9aa5a3; }

/* Breadcrumb */
.breadcrumb { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 18px; }
.breadcrumb a { color: var(--teal-dark); }

/* Utilities */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.legal-body h2 { margin-top: 30px; }
.legal-body ul { padding-left: 20px; }

/* Responsive */
@media (max-width: 960px) {
  .hero-grid, .contact-grid, .footer-grid { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .nav-links {
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    display: none;
    gap: 16px;
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  h1 { font-size: 2rem; }
  .hero { padding: 60px 0; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .stats { gap: 24px; }
  .section { padding: 52px 0; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  h1 { font-size: 1.7rem; }
  h2 { font-size: 1.5rem; }
  .btn { width: 100%; text-align: center; }
  .hero-actions { flex-direction: column; }
}