/* ==========================================================================
   INNI — Italian Neuroimaging Network Initiative
   Static reproduction stylesheet
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Source+Serif+4:opsz,wght@8..60,400;8..60,600;8..60,700&family=Source+Sans+3:wght@400;500;600;700&display=swap');

:root{
  --ink:        #16243d;   /* primary text / deep navy */
  --ink-soft:   #4a5972;   /* secondary text */
  --navy:       #16243d;   /* header / footer */
  --navy-2:     #1f3a63;   /* gradient partner */
  --accent:     #2f8fae;   /* MRI cyan-blue accent */
  --accent-deep:#1d6e8c;
  --line:       #dde3ea;
  --bg:         #f6f8fa;
  --paper:      #ffffff;
  --max:        1140px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family:'Source Sans 3', Arial, sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  font-family:'Source Serif 4', Georgia, serif;
  color:var(--navy);
  line-height:1.25;
  margin:0 0 .5em;
}
h1{ font-size: clamp(1.8rem, 3vw, 2.4rem); font-weight:700; }
h2{ font-size: clamp(1.4rem, 2.4vw, 1.9rem); font-weight:600; }
h3{ font-size: 1.15rem; font-weight:600; }
p{ margin:0 0 1.1em; }
a{ color:var(--accent-deep); text-decoration:none; }
a:hover{ text-decoration:underline; }
img{ max-width:100%; display:block; }
ul{ margin:0 0 1.1em; padding-left:1.3em; }
li{ margin-bottom:.4em; }

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

/* ---------- Top utility bar ---------- */
.topbar{
  background:var(--ink);
  color:#c9d4e3;
  font-size:.82rem;
}
.topbar .container{
  display:flex;
  justify-content:flex-end;
  gap:1.4em;
  padding-top:6px;
  padding-bottom:6px;
}
.topbar a{ color:#c9d4e3; }
.topbar a:hover{ color:#fff; }

/* ---------- Header / Nav ---------- */
header.site-header{
  background:var(--paper);
  border-bottom:1px solid var(--line);
  position:sticky;
  top:0;
  z-index:50;
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:14px 24px;
  gap:24px;
}
.brand{ display:flex; align-items:center; gap:12px; }
.brand img{ height:54px; width:auto; }
.brand-text{ font-family:'Source Serif 4',serif; font-weight:700; font-size:1.3rem; color:var(--navy); }

nav.main-nav{ flex:1; display:flex; justify-content:flex-end; }
nav.main-nav ul{
  display:flex;
  list-style:none;
  margin:0; padding:0;
  gap:4px;
  font-weight:600;
  font-size:.95rem;
}
nav.main-nav li{ position:relative; margin:0; }
nav.main-nav > ul > li > a{
  display:block;
  color:var(--ink);
  padding:10px 14px;
  border-radius:4px;
}
nav.main-nav > ul > li > a:hover,
nav.main-nav > ul > li.active > a{
  color:var(--accent-deep);
  background:#eef5f8;
  text-decoration:none;
}
.has-sub > .submenu{
  display:none;
  position:absolute;
  top:100%; left:0;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:6px;
  box-shadow:0 10px 24px rgba(22,36,61,.12);
  min-width:220px;
  padding:6px;
  list-style:none;
  font-weight:500;
}
.has-sub:hover > .submenu,
.has-sub:focus-within > .submenu{ display:block; }
.submenu li a{
  display:block;
  padding:9px 12px;
  border-radius:4px;
  color:var(--ink-soft);
  white-space:nowrap;
}
.submenu li a:hover{ background:#eef5f8; color:var(--accent-deep); text-decoration:none; }

.nav-toggle{ display:none; }

/* ---------- Hero (home) ---------- */
.hero{
  background:linear-gradient(120deg,var(--navy) 0%, var(--navy-2) 55%, var(--accent-deep) 100%);
  color:#fff;
  padding:64px 0 56px;
}
.hero .container{
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  gap:48px;
  align-items:center;
}
.hero h1{ color:#fff; }
.hero h1 a{ color:#fff; }
.hero p.lead{ color:#dbe7ef; font-size:1.05rem; }
.hero .cta{
  display:inline-block;
  margin-top:8px;
  padding:10px 22px;
  border:1px solid rgba(255,255,255,.6);
  border-radius:999px;
  color:#fff;
  font-weight:600;
  font-size:.9rem;
}
.hero .cta:hover{ background:#fff; color:var(--navy); text-decoration:none; }
.hero .hero-art{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.18);
  border-radius:14px;
  padding:18px;
}
.hero .hero-art img{ border-radius:8px; }

/* ---------- Breadcrumb ---------- */
.breadcrumb{
  background:var(--paper);
  border-bottom:1px solid var(--line);
  font-size:.85rem;
  color:var(--ink-soft);
}
.breadcrumb .container{ padding-top:10px; padding-bottom:10px; }
.breadcrumb a{ color:var(--ink-soft); }
.breadcrumb .sep{ margin:0 6px; color:#aab5c4; }

/* ---------- Main content ---------- */
main{ padding:48px 0 64px; }
.article{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:10px;
  padding:40px 44px;
  max-width:880px;
}
.article h1{ border-bottom:2px solid var(--accent); padding-bottom:.4em; margin-bottom:.9em; }
.article .lead-strong{ font-weight:600; color:var(--navy); }

.article-nav{
  display:flex;
  justify-content:space-between;
  margin-top:28px;
  padding-top:18px;
  border-top:1px solid var(--line);
  font-size:.9rem;
  font-weight:600;
}

.actions-row{
  display:flex;
  gap:18px;
  font-size:.85rem;
  color:var(--ink-soft);
  margin-bottom:24px;
}

/* ---------- News list ---------- */
.news-item{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:10px;
  padding:26px 30px;
  margin-bottom:18px;
  display:flex;
  gap:22px;
}
.news-date{
  flex:0 0 64px;
  text-align:center;
  background:#eef5f8;
  border-radius:8px;
  padding:10px 6px;
  color:var(--accent-deep);
  font-weight:700;
  font-family:'Source Serif 4',serif;
}
.news-date .day{ display:block; font-size:1.4rem; line-height:1.1; }
.news-date .mon{ display:block; font-size:.75rem; letter-spacing:.05em; text-transform:uppercase; }
.news-item h3{ margin-bottom:.3em; }
.news-item .meta{ font-size:.85rem; color:var(--ink-soft); margin-bottom:.5em; }
.pagination{ margin-top:10px; font-size:.9rem; }
.pagination a, .pagination span{ display:inline-block; padding:6px 12px; margin-right:6px; border:1px solid var(--line); border-radius:6px; }

/* ---------- Contacts ---------- */
.contact-card{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:10px;
  padding:30px 34px;
  max-width:520px;
}
.contact-card .mail-row{ display:flex; align-items:center; gap:10px; margin-top:10px; }
.contact-card .mail-row img{ height:22px; }

/* ---------- Empty state (documents) ---------- */
.empty-state{
  background:var(--paper);
  border:1px dashed var(--line);
  border-radius:10px;
  padding:40px;
  text-align:center;
  color:var(--ink-soft);
  max-width:700px;
}

/* ---------- Footer ---------- */
footer.site-footer{
  background:var(--navy);
  color:#aebbcc;
  padding:34px 0 26px;
  margin-top:40px;
}
footer .footer-top{
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:24px;
  padding-bottom:20px;
  border-bottom:1px solid rgba(255,255,255,.12);
  margin-bottom:18px;
}
footer nav ul{
  display:flex;
  gap:18px;
  list-style:none;
  padding:0; margin:0;
  flex-wrap:wrap;
  font-size:.88rem;
}
footer a{ color:#cfd9e6; }
footer a:hover{ color:#fff; }
.footer-bottom{ font-size:.82rem; display:flex; justify-content:space-between; flex-wrap:wrap; gap:8px; }

/* ---------- Responsive ---------- */
@media (max-width: 860px){
  .hero .container{ grid-template-columns: 1fr; }
  .header-inner{ flex-wrap:wrap; }
  nav.main-nav{ width:100%; justify-content:flex-start; }
  nav.main-nav ul{ flex-wrap:wrap; }
  .article{ padding:28px 22px; }
}