/* ==========================================================================
   FOSS Day Italia — site.css
   Estensione hand-written (pure CSS, nessun build step) allo stile
   "Switch/Strata" già compilato in dist/css/style.css.
   Palette e font ereditati da src/scss/abstracts/_variables.scss:
   primary #535FD7 · secondary #61EFFD · tertiary #FFBC48
   bg light #FFFFFF/#F8F9FB/#E9EDF3 · bg dark #182538/#223146/#304057
   ========================================================================== */

:root {
  --fd-primary: #535FD7;
  --fd-primary-dark: #212880;
  --fd-secondary: #2FEAFC;
  --fd-tertiary: #FE7E1F;
  --fd-radius: 6px;
  --fd-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --fd-shadow-sm: 0 4px 14px rgba(24,37,56,0.06);
  --fd-shadow-md: 0 16px 40px rgba(24,37,56,0.12);
  --fd-shadow-primary: 0 14px 32px rgba(83,95,215,0.22);
}
.lights-off {
  --fd-shadow-sm: 0 4px 14px rgba(0,0,0,0.2);
  --fd-shadow-md: 0 20px 48px rgba(0,0,0,0.4);
  --fd-shadow-primary: 0 16px 36px rgba(97,239,253,0.14);
}

html { scroll-behavior: smooth; }
[id] { scroll-margin-top: 28px; }

/* Il tema chiaro/scuro scambia in blocco molte immagini asset-light/asset-dark:
   senza questo, lo scroll-anchoring del browser "corregge" la posizione e,
   con scroll-behavior:smooth attivo, il risultato è un salto animato indesiderato. */
html, body, .body-wrap { overflow-anchor: none; }

::selection { background: var(--fd-primary); color: #fff; }

::-webkit-scrollbar { width: 12px; height: 12px; }
::-webkit-scrollbar-track { background: #F8F9FB; }
::-webkit-scrollbar-thumb { background: #cfd6e4; border-radius: 8px; border: 3px solid #F8F9FB; }
::-webkit-scrollbar-thumb:hover { background: var(--fd-primary); }
.lights-off::-webkit-scrollbar-track,
.lights-off ::-webkit-scrollbar-track { background: #182538; }
.lights-off::-webkit-scrollbar-thumb,
.lights-off ::-webkit-scrollbar-thumb { background: #304057; border-color: #182538; }
html { scrollbar-color: #cfd6e4 #F8F9FB; scrollbar-width: thin; }

.text-gradient {
  background: linear-gradient(120deg, var(--fd-primary), #2FEAFC 85%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

/* -------------------------------------------------- Site navigation ---- */
.site-nav-bar {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.site-nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none !important;
}
.site-nav-brand img { display: block; }
.site-nav-brand-text {
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.2px;
  color: #182538;
  white-space: nowrap;
}
.site-nav-cta-mobile { display: none; }
.lights-off .site-nav-brand-text { color: #fff; }

.site-nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid #E9EDF3;
  border-radius: var(--fd-radius);
  background: #fff;
  cursor: pointer;
  position: relative;
}
.lights-off .site-nav-toggle { background: #223146; border-color: #304057; }
.site-nav-toggle span,
.site-nav-toggle span::before,
.site-nav-toggle span::after {
  content: '';
  position: absolute;
  left: 9px;
  width: 22px;
  height: 2px;
  background: #182538;
  transition: transform .2s ease, opacity .2s ease;
}
.lights-off .site-nav-toggle span,
.lights-off .site-nav-toggle span::before,
.lights-off .site-nav-toggle span::after { background: #fff; }
.site-nav-toggle span { top: 19px; }
.site-nav-toggle span::before { top: -7px; }
.site-nav-toggle span::after { top: 7px; }
.site-nav-toggle.is-active span { background: transparent; }
.site-nav-toggle.is-active span::before { top: 0; transform: rotate(45deg); }
.site-nav-toggle.is-active span::after { top: 0; transform: rotate(-45deg); }

.site-nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.site-nav-links > li { position: relative; }
.site-nav-links a:not(.button) {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.2px;
  color: #6B7A90;
  text-decoration: none;
  padding: 10px 14px;
  border-radius: var(--fd-radius);
  transition: color .15s ease, background .15s ease;
  white-space: nowrap;
}
.site-nav-links a:not(.button):hover,
.site-nav-links a:not(.button):focus,
.site-nav-links a.is-current { color: var(--fd-primary); background: rgba(83,95,215,0.08); }
.lights-off .site-nav-links a:not(.button) { color: #8595AE; }
.lights-off .site-nav-links a:not(.button):hover,
.lights-off .site-nav-links a:not(.button):focus,
.lights-off .site-nav-links a.is-current { color: #fff; background: rgba(97,239,253,0.1); }

.site-nav-caret { width: 9px; height: 9px; flex-shrink: 0; transition: transform .2s ease; }
.has-dropdown.is-open .site-nav-caret { transform: rotate(180deg); }

.site-nav-dropdown {
  list-style: none;
  margin: 0;
  padding: 8px;
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 240px;
  background: #fff;
  border: 1px solid #E9EDF3;
  border-radius: 10px;
  box-shadow: 0 16px 40px rgba(24,37,56,0.14);
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity .18s ease, transform .18s ease, visibility .18s;
  z-index: 30;
}
.lights-off .site-nav-dropdown { background: #223146; border-color: #304057; box-shadow: 0 16px 40px rgba(0,0,0,0.35); }
.has-dropdown.is-open .site-nav-dropdown,
.has-dropdown:hover .site-nav-dropdown,
.has-dropdown:focus-within .site-nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.site-nav-dropdown li + li { margin-top: 2px; }
.site-nav-dropdown a {
  display: flex !important;
  flex-direction: column;
  align-items: flex-start !important;
  gap: 2px !important;
  padding: 10px 12px !important;
  border-radius: 8px;
}
.site-nav-dropdown a strong { font-size: 14px; color: #182538; font-weight: 700; }
.lights-off .site-nav-dropdown a strong { color: #fff; }
.site-nav-dropdown a span.meta { font-size: 12px; color: #8595AE; font-weight: 500; }
.site-nav-dropdown a:hover strong,
.site-nav-dropdown a.is-current strong { color: var(--fd-primary); }
.site-nav-dropdown-empty {
  padding: 10px 12px;
  font-size: 12px;
  color: #8595AE;
}
.site-nav-dropdown-hint {
  display: block;
  margin-top: 4px;
  padding: 8px 12px 4px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: #b7c0cf;
  border-top: 1px solid #E9EDF3;
}
.lights-off .site-nav-dropdown-hint { border-color: #304057; }

.site-nav-actions { display: flex; align-items: center; gap: 12px; }

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  -webkit-user-select: none;
  user-select: none;
}
.theme-toggle input { position: absolute; opacity: 0; }
.theme-toggle .track {
  width: 42px;
  height: 24px;
  border-radius: 12px;
  background: #E9EDF3;
  position: relative;
  transition: background .15s ease;
  flex-shrink: 0;
}
.lights-off .theme-toggle .track { background: #304057; }
.theme-toggle .track::after {
  content: '☀';
  position: absolute;
  top: 2px; left: 2px;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  transition: transform .18s ease;
  box-shadow: 0 2px 6px rgba(24,37,56,0.25);
}
.theme-toggle input:checked + .track::after { transform: translateX(18px); content: '☾'; }

@media (max-width: 900px) {
  .site-nav-toggle { display: block; }
  .site-nav-links {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    background: #fff;
    border: 1px solid #E9EDF3;
    border-radius: 12px;
    padding: 10px;
    box-shadow: 0 20px 48px rgba(24,37,56,0.16);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition: max-height .25s ease, opacity .2s ease;
  }
  .lights-off .site-nav-links { background: #223146; border-color: #304057; }
  .site-nav-links.is-open { max-height: 480px; opacity: 1; visibility: visible; }
  .site-nav-links a:not(.button) { padding: 12px 14px; }
  .site-nav-dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    background: rgba(83,95,215,0.05);
    display: none;
    margin-top: 2px;
  }
  .lights-off .site-nav-dropdown { background: rgba(97,239,253,0.06); }
  .has-dropdown.is-open .site-nav-dropdown { display: block; }
  .site-nav-caret { margin-left: auto; }
  .site-nav-cta-mobile { display: block; margin-top: 10px; padding: 0 4px; }
  .site-nav-cta-mobile .button { width: 100%; }
}

@media (max-width: 480px) {
  .site-nav-actions .button { display: none; }
  .site-nav-brand-text { font-size: 16px; }
}

/* -------------------------------------------------------- Sub-header --- */
.sub-hero {
  padding-top: 24px;
  padding-bottom: 40px;
}
.sub-hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--fd-primary);
  background: rgba(83,95,215,0.08);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
}
.lights-off .sub-hero-eyebrow { color: #93F4FE; background: rgba(97,239,253,0.1); }
.sub-hero h1 { margin-bottom: 16px; }
.sub-hero-lead { max-width: 720px; font-size: 20px; line-height: 30px; }
.sub-hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
  list-style: none;
  padding: 0;
}
.sub-hero-facts li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: #182538;
  background: #F8F9FB;
  border: 1px solid #E9EDF3;
  padding: 10px 16px;
  border-radius: 999px;
}
.lights-off .sub-hero-facts li { color: #fff; background: #223146; border-color: #304057; }
.sub-hero-facts li i { color: var(--fd-primary); font-size: 15px; }
.lights-off .sub-hero-facts li i { color: #93F4FE; }
.sub-hero-cta { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 32px; }

/* ------------------------------------------------------- Event teaser -- */
.event-teaser {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  background: linear-gradient(120deg, rgba(83,95,215,0.08), rgba(47,234,252,0.08));
  border: 1px solid #E9EDF3;
  border-radius: 16px;
  padding: 24px 28px;
  margin: 0 auto 56px;
  max-width: 900px;
}
.lights-off .event-teaser { background: linear-gradient(120deg, rgba(83,95,215,0.16), rgba(47,234,252,0.08)); border-color: #304057; }
.event-teaser-date {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 76px;
  height: 76px;
  flex-shrink: 0;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(24,37,56,0.1);
  font-family: "IBM Plex Sans", sans-serif;
}
.lights-off .event-teaser-date { background: #182538; }
.event-teaser-date .day { font-size: 26px; font-weight: 700; line-height: 1; color: var(--fd-primary); }
.event-teaser-date .month { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: #8595AE; margin-top: 4px; }
.event-teaser-body { flex: 1; min-width: 220px; }
.event-teaser-body h3 { margin: 0 0 4px; font-size: 20px; }
.event-teaser-body p { margin: 0; font-size: 15px; }
.event-teaser-cta { flex-shrink: 0; }

/* ------------------------------------------------------------ Sections- */
.section-eyebrow {
  display: block;
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--fd-primary);
  margin-bottom: 12px;
}
.lights-off .section-eyebrow { color: #93F4FE; }

.topic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  margin-top: 48px;
}
.topic-card {
  background: #fff;
  border: 1px solid #E9EDF3;
  border-radius: 14px;
  padding: 28px;
  text-align: left;
}
.lights-off .topic-card { background: #223146; border-color: #304057; }
.topic-card .icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(83,95,215,0.1);
  font-size: 20px;
  color: var(--fd-primary);
  margin-bottom: 16px;
}
.lights-off .topic-card .icon { background: rgba(97,239,253,0.12); color: #93F4FE; }
.topic-card h3 { font-size: 18px; margin-top: 0; margin-bottom: 10px; }
.topic-card p { font-size: 15px; line-height: 24px; margin-bottom: 0; color: #6B7A90; }
.lights-off .topic-card p { color: #8595AE; }

/* ---------------------------------------------------------------- FAQ - */
.faq-list { max-width: 800px; margin: 48px auto 0; }
.faq-item {
  border: 1px solid #E9EDF3;
  border-radius: 12px;
  padding: 4px 20px;
  margin-bottom: 12px;
  background: #fff;
}
.lights-off .faq-item { background: #223146; border-color: #304057; }
.faq-item summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 600;
  font-size: 16px;
  color: #182538;
}
.lights-off .faq-item summary { color: #fff; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: #F8F9FB;
  color: var(--fd-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: transform .2s ease;
}
.lights-off .faq-item summary::after { background: #182538; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { padding-bottom: 20px; margin: 0; color: #6B7A90; font-size: 15px; line-height: 24px; }
.lights-off .faq-item p { color: #8595AE; }

/* ---------------------------------------------------------- Speakers -- */
.speakers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  margin-top: 48px;
}
.speaker-card {
  background: #fff;
  border: 1px dashed #E9EDF3;
  border-radius: 14px;
  padding: 28px 20px;
  text-align: center;
}
.lights-off .speaker-card { background: #223146; border-color: #304057; }
.speaker-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, rgba(83,95,215,0.18), rgba(47,234,252,0.18));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  color: var(--fd-primary);
}
.lights-off .speaker-avatar { color: #93F4FE; }
.speaker-card h4 { font-size: 15px; margin: 0 0 4px; color: #8595AE; font-weight: 600; }
.speaker-card p { font-size: 13px; margin: 0; color: #b7c0cf; }
.speaker-card.is-cta {
  border-style: solid;
  border-color: var(--fd-primary);
  background: rgba(83,95,215,0.05);
}
.lights-off .speaker-card.is-cta { background: rgba(97,239,253,0.06); }
.speaker-card.is-cta .speaker-avatar { background: var(--fd-primary); color: #fff; }
.speaker-card.is-cta h4 { color: #182538; font-family: "IBM Plex Sans", sans-serif; font-size: 16px; }
.lights-off .speaker-card.is-cta h4 { color: #fff; }
.speaker-card.is-cta a { font-size: 13px; font-weight: 700; }
.link-button {
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  color: var(--fd-primary);
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
}
.lights-off .link-button { color: #93F4FE; }
.link-button:hover { text-decoration: underline; }

/* --------------------------------------------------------- BoostMedia - */
.org-panel {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
  align-items: flex-start;
  margin-top: 48px;
}
.org-panel-copy { flex: 1 1 420px; }
.org-panel-copy p { font-size: 16px; }
.org-stats {
  flex: 1 1 360px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.org-stat {
  background: #F8F9FB;
  border: 1px solid #E9EDF3;
  border-radius: 12px;
  padding: 20px;
}
.lights-off .org-stat { background: #182538; border-color: #304057; }
.org-stat .value {
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 700;
  font-size: 26px;
  color: var(--fd-primary);
  display: block;
  margin-bottom: 4px;
}
.lights-off .org-stat .value { color: #93F4FE; }
.org-stat .label { font-size: 13px; color: #6B7A90; }
.lights-off .org-stat .label { color: #8595AE; }
.org-projects { margin-top: 40px; display: grid; grid-template-columns: repeat(auto-fit, minmax(260px,1fr)); gap: 20px; }
.org-project-card {
  border: 1px solid #E9EDF3;
  border-radius: 14px;
  padding: 24px;
  background: #fff;
}
.lights-off .org-project-card { background: #223146; border-color: #304057; }
.org-project-card .tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--fd-tertiary);
  margin-bottom: 10px;
}
.org-project-card h4 { margin: 0 0 8px; font-size: 17px; }
.org-project-card p { font-size: 14px; color: #6B7A90; margin-bottom: 12px; }
.lights-off .org-project-card p { color: #8595AE; }

/* -------------------------------------------------------------- Badge - */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(83,95,215,0.1);
  color: var(--fd-primary);
}
.lights-off .badge { background: rgba(97,239,253,0.12); color: #93F4FE; }
.badge-outline { background: transparent; border: 1px solid #E9EDF3; color: #8595AE; }
.lights-off .badge-outline { border-color: #304057; }

/* --------------------------------------------------------- Programma -- */
.programme-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid #E9EDF3;
}
.lights-off .programme-head { border-color: #304057; }
.programme-head h2 { margin: 0; font-size: 24px; }

.schedule { display: flex; flex-direction: column; gap: 10px; max-width: 820px; margin: 0 auto; }
.slot {
  display: grid;
  grid-template-columns: 130px 1fr;
  background: #fff;
  border: 1px solid #E9EDF3;
  border-radius: 12px;
  overflow: hidden;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.lights-off .slot { background: #223146; border-color: #304057; }
.slot:hover { border-color: var(--fd-primary); box-shadow: 0 10px 28px rgba(83,95,215,0.12); }
.slot-time {
  background: #F8F9FB;
  border-right: 1px solid #E9EDF3;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px 8px;
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 13px;
  font-weight: 700;
  color: var(--fd-primary);
  text-align: center;
  line-height: 1.4;
}
.lights-off .slot-time { background: #182538; border-color: #304057; color: #93F4FE; }
.slot-body { padding: 16px 20px; display: flex; flex-direction: column; justify-content: center; gap: 4px; }
.slot-title { font-size: 15px; font-weight: 600; color: #182538; }
.lights-off .slot-title { color: #fff; }
.slot-note { font-size: 13px; color: #8595AE; }
.slot.is-break { background: rgba(255,188,72,0.08); border-color: rgba(254,126,31,0.25); }
.lights-off .slot.is-break { background: rgba(255,188,72,0.06); }
.slot.is-break .slot-time { background: rgba(255,188,72,0.16); color: #b5690f; border-color: rgba(254,126,31,0.25); }
.lights-off .slot.is-break .slot-time { color: #FFCF7B; background: rgba(255,188,72,0.1); }
.slot.is-tba .slot-title { color: #8595AE; }
.lights-off .slot.is-tba .slot-title { color: #6B7A90; }
.slot.is-tba { border-style: dashed; }

.programme-cta {
  max-width: 820px;
  margin: 40px auto 0;
  padding: 28px;
  border-radius: 14px;
  background: rgba(83,95,215,0.06);
  border: 1px solid rgba(83,95,215,0.18);
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: space-between;
}
.lights-off .programme-cta { background: rgba(97,239,253,0.06); border-color: rgba(97,239,253,0.18); }
.programme-cta p { margin: 0; max-width: 480px; font-size: 15px; }

@media (max-width: 560px) {
  .slot { grid-template-columns: 96px 1fr; }
  .slot-time { font-size: 11px; padding: 12px 4px; }
  .org-stats { grid-template-columns: 1fr 1fr; }
}

/* --------------------------------------------------- Sponsor CTA block */
.cta-benefits {
  list-style: none;
  margin: 0 0 32px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 24px;
  text-align: left;
}
.cta-benefits li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
  color: #6B7A90;
  max-width: 260px;
}
.lights-off .cta-benefits li { color: #8595AE; }
.cta-benefits li::before {
  content: '✓';
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(83,95,215,0.12);
  color: var(--fd-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
}
.lights-off .cta-benefits li::before { background: rgba(97,239,253,0.14); color: #93F4FE; }
.cta-cta { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; max-width: 560px; }
.cta-fineprint { margin-top: 20px; font-size: 13px; color: #8595AE; }

/* ==========================================================================
   Rifinitura visiva — micro-interazioni, gradienti, profondità.
   ========================================================================== */

/* ---- Titoli di sezione: sottolineatura a gradiente, centrata --------- */
.features-header .section-title,
.programme-head h2,
.sub-hero h1 {
  position: relative;
}
.container-sm > .section-title,
.features-header .container-sm .section-title {
  padding-bottom: 18px;
}
.features-header .container-sm .section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 56px;
  height: 4px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--fd-primary), #2FEAFC);
}

/* ---- Bottoni: leggera profondità e sollevamento al passaggio --------- */
.button {
  border-radius: 10px;
  font-size: 13px;
  letter-spacing: 0.04em;
  transition: transform .22s var(--fd-ease), box-shadow .22s var(--fd-ease), background .18s ease, color .18s ease;
}
.button::before { border-radius: 10px; }
.button-sm { font-size: 12px; }
.button:hover { transform: translateY(-2px); }
.button-primary { box-shadow: var(--fd-shadow-primary); }
.button-primary:hover { box-shadow: 0 18px 40px rgba(83,95,215,0.3); }
.lights-off .button-primary:hover { box-shadow: 0 18px 40px rgba(97,239,253,0.2); }
.button:not(.button-primary) { box-shadow: var(--fd-shadow-sm); }
.button:not(.button-primary):hover { box-shadow: var(--fd-shadow-md); }
.button:active { transform: translateY(0); }

/* ---- Card generiche: sollevamento coerente su tutto il sito ---------- */
.topic-card,
.org-project-card,
.speaker-card,
.slot,
.faq-item,
.org-stat {
  transition: transform .28s var(--fd-ease), box-shadow .28s var(--fd-ease), border-color .28s var(--fd-ease);
}
.topic-card:hover,
.org-project-card:hover,
.org-stat:hover {
  transform: translateY(-6px);
  box-shadow: var(--fd-shadow-md);
  border-color: rgba(83,95,215,0.35);
}
.lights-off .topic-card:hover,
.lights-off .org-project-card:hover,
.lights-off .org-stat:hover { border-color: rgba(97,239,253,0.3); }
.speaker-card:hover:not(.is-cta) { transform: translateY(-4px); box-shadow: var(--fd-shadow-sm); border-color: rgba(83,95,215,0.4); }
.speaker-card.is-cta:hover { transform: translateY(-4px); box-shadow: var(--fd-shadow-md); }
.slot:hover { transform: translateY(-3px); }
.faq-item:hover { border-color: rgba(83,95,215,0.3); }
.lights-off .faq-item:hover { border-color: rgba(97,239,253,0.25); }

/* ---- Icone dei topic-card: cerchio a gradiente invece del flat ------- */
.topic-card .icon {
  background: linear-gradient(135deg, rgba(83,95,215,0.14), rgba(47,234,252,0.14));
  box-shadow: inset 0 0 0 1px rgba(83,95,215,0.12);
  transition: transform .28s var(--fd-ease);
}
.lights-off .topic-card .icon { background: linear-gradient(135deg, rgba(97,239,253,0.16), rgba(83,95,215,0.24)); box-shadow: inset 0 0 0 1px rgba(97,239,253,0.18); }
.topic-card:hover .icon { transform: scale(1.08) rotate(-4deg); }

/* ---- Event teaser: bordo animato e più profondità --------------------- */
.event-teaser {
  background-size: 200% 200%;
  animation: fdGradientDrift 14s ease infinite;
  box-shadow: var(--fd-shadow-sm);
}
@keyframes fdGradientDrift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}
.event-teaser-date {
  transition: transform .3s var(--fd-ease);
}
.event-teaser:hover .event-teaser-date { transform: rotate(-4deg) scale(1.05); }

/* ---- Badge "in aggiornamento": puntino animato ------------------------ */
.badge-outline { position: relative; padding-left: 22px; }
.badge-outline::before {
  content: '';
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--fd-tertiary);
  box-shadow: 0 0 0 0 rgba(254,126,31,0.5);
  animation: fdPulse 2s ease infinite;
}
@keyframes fdPulse {
  0% { box-shadow: 0 0 0 0 rgba(254,126,31,0.45); }
  70% { box-shadow: 0 0 0 7px rgba(254,126,31,0); }
  100% { box-shadow: 0 0 0 0 rgba(254,126,31,0); }
}

/* ---- FAQ: leggero fade-in del contenuto all'apertura ------------------ */
.faq-item[open] summary { color: var(--fd-primary); }
.lights-off .faq-item[open] summary { color: #93F4FE; }
.faq-item[open] p { animation: fdFadeSlide .28s var(--fd-ease); }
@keyframes fdFadeSlide {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---- Slot orario: sfumatura più curata --------------------------------- */
.slot-time { background: linear-gradient(160deg, #F0F2FF, #F8F9FB); }
.lights-off .slot-time { background: linear-gradient(160deg, #1c2a3f, #182538); }
.slot.is-break .slot-time { background: linear-gradient(160deg, rgba(255,188,72,0.22), rgba(255,188,72,0.1)); }

/* ---- Dropdown edizioni: item corrente evidenziato ---------------------- */
.site-nav-dropdown a.is-current {
  background: rgba(83,95,215,0.08);
}
.lights-off .site-nav-dropdown a.is-current { background: rgba(97,239,253,0.1); }

/* ---- Nav brand: leggero effetto hover ---------------------------------- */
.site-nav-brand img { transition: transform .3s var(--fd-ease); }
.site-nav-brand:hover img { transform: rotate(-6deg) scale(1.06); }

/* ---- Speaker avatar: respiro sottile in attesa dei relatori ------------ */
.speaker-card:not(.is-cta) .speaker-avatar { animation: fdBreathe 4s ease-in-out infinite; }
@keyframes fdBreathe {
  0%, 100% { opacity: 1; }
  50% { opacity: .6; }
}

/* ==========================================================================
   Hero announce pill + Modale "Proponi un Talk"
   ========================================================================== */

.hero-announce {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 13px;
  font-weight: 600;
  color: #182538 !important;
  text-decoration: none !important;
  background: #fff;
  border: 1px solid #E9EDF3;
  padding: 8px 16px 8px 12px;
  border-radius: 999px;
  margin-bottom: 24px;
  box-shadow: var(--fd-shadow-sm);
  transition: transform .22s var(--fd-ease), box-shadow .22s var(--fd-ease), border-color .22s var(--fd-ease);
}
.lights-off .hero-announce { background: #223146; border-color: #304057; color: #fff !important; }
.hero-announce:hover { transform: translateY(-2px); box-shadow: var(--fd-shadow-md); border-color: rgba(83,95,215,0.4); text-decoration: none; }
.hero-announce-dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--fd-tertiary); flex-shrink: 0;
  box-shadow: 0 0 0 0 rgba(254,126,31,0.5);
  animation: fdPulse 2s ease infinite;
}
.hero-announce-arrow { transition: transform .22s var(--fd-ease); }
.hero-announce:hover .hero-announce-arrow { transform: translateX(3px); }
@media (max-width: 640px) {
  .hero-announce { white-space: normal; font-size: 12px; }
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(24,37,56,0.55);
  backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: opacity .22s ease, visibility .22s;
}
.modal.is-active { opacity: 1; visibility: visible; }
.modal-content {
  position: relative;
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  background: #fff;
  border-radius: 16px;
  padding: 36px 32px 28px;
  box-shadow: var(--fd-shadow-md);
  transform: translateY(16px) scale(.98);
  transition: transform .25s var(--fd-ease);
}
.lights-off .modal-content { background: #182538; }
.modal.is-active .modal-content { transform: translateY(0) scale(1); }
.modal-content h2 { margin-top: 0; margin-bottom: 8px; font-size: 22px; }
.modal-lead { font-size: 14px; color: #6B7A90; margin-bottom: 24px; }
.lights-off .modal-lead { color: #8595AE; }
.modal-close {
  position: absolute;
  top: 16px; right: 16px;
  width: 32px; height: 32px;
  border-radius: 50%;
  border: none;
  background: #F8F9FB;
  color: #6B7A90;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .18s ease, color .18s ease, transform .18s ease;
}
.lights-off .modal-close { background: #223146; color: #8595AE; }
.modal-close:hover { background: rgba(83,95,215,0.12); color: var(--fd-primary); transform: rotate(90deg); }
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: #182538;
  margin-bottom: 6px;
}
.lights-off .form-group label { color: #fff; }
.form-group input,
.form-group textarea {
  width: 100%;
  font-family: "Heebo", sans-serif;
  font-size: 15px;
  color: #182538;
  background: #F8F9FB;
  border: 1px solid #E9EDF3;
  border-radius: 8px;
  padding: 11px 14px;
  transition: border-color .18s ease, background .18s ease;
}
.lights-off .form-group input,
.lights-off .form-group textarea { background: #223146; border-color: #304057; color: #fff; }
.form-group textarea { min-height: 100px; resize: vertical; }
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--fd-primary);
  background: #fff;
}
.lights-off .form-group input:focus,
.lights-off .form-group textarea:focus { background: #182538; }
.modal-note { margin: 12px 0 0; font-size: 12px; color: #8595AE; text-align: center; }
.modal-success {
  display: none;
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: 10px;
  background: rgba(83,95,215,0.08);
  color: var(--fd-primary);
  font-size: 13px;
  font-weight: 600;
  text-align: center;
}
.lights-off .modal-success { background: rgba(97,239,253,0.1); color: #93F4FE; }
.modal-success.is-active { display: block; }
.modal-warning {
  display: none;
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: 10px;
  background: rgba(254,126,31,0.1);
  color: #a15617;
  font-size: 13px;
  text-align: center;
}
.modal-warning p { margin: 0 0 6px; }
.modal-warning p:last-child { margin-bottom: 0; }
.modal-warning a { color: inherit; text-decoration: underline; }
.lights-off .modal-warning { background: rgba(255,188,72,0.14); color: #FFCF7B; }
.modal-warning.is-active { display: block; }
.modal-warning-copy-status { font-style: italic; opacity: .85; }

/* -------------------------------------------------------- Sponsor strip */
.sponsor-strip {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid #E9EDF3;
}
.lights-off .sponsor-strip { border-color: #304057; }
.sponsor-strip-label {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: #8595AE;
}
.sponsor-strip-logos {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 20px;
}
.sponsor-strip-logos a {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 72px;
  padding: 12px 26px;
  background: #fff;
  border: 1px solid #E9EDF3;
  border-radius: 12px;
  transition: transform .22s var(--fd-ease), box-shadow .22s var(--fd-ease), border-color .22s var(--fd-ease);
}
.sponsor-strip-logos a:hover { transform: translateY(-3px); box-shadow: var(--fd-shadow-sm); border-color: rgba(83,95,215,0.35); }
.sponsor-strip-logos img { height: 34px; width: auto; max-width: 140px; display: block; }
.sponsor-strip-logos img.is-large { height: 72px; max-width: 180px; }

/* ---------------------------------------------------------- Site footer */
.site-footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  justify-content: normal;
  align-items: start;
  padding-top: 56px;
  padding-bottom: 40px;
  text-align: left;
}
.footer-col-brand .footer-brand-link { display: inline-flex; }
.footer-tagline { margin: 14px 0 0; font-size: 14px; line-height: 22px; max-width: 230px; }
.footer-col-title {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: #fff;
  opacity: .8;
  margin: 0 0 16px;
}
.site-footer .footer-links,
.site-footer .footer-social-links { display: block; justify-content: flex-start; }
.site-footer .footer-links li { margin: 0 0 10px; }
.site-footer .footer-links li:last-child { margin-bottom: 0; }
.site-footer .footer-social-links { display: flex; flex-wrap: wrap; gap: 4px; margin-left: -8px; }
.site-footer .footer-social-links li { margin: 0 !important; }
.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid #304057;
}
.footer-bottom .footer-copyright { width: auto; justify-content: flex-start; font-size: 13px; }
@media (max-width: 800px) {
  .site-footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-col-brand { grid-column: 1 / -1; }
}
@media (max-width: 480px) {
  .site-footer-inner { grid-template-columns: 1fr; }
}