/* ================= Footer ================= */
.s-footer{
  --f-strong: color-mix(in srgb, var(--c-bg) 98%, var(--c-secondary));
  --f-fg: color-mix(in srgb, var(--c-bg) 90%, var(--c-secondary));
  --f-muted: color-mix(in srgb, var(--c-bg) 66%, var(--c-secondary));
  --f-line: color-mix(in srgb, var(--c-bg) 13%, transparent);
  --f-chip: color-mix(in srgb, var(--c-bg) 8%, transparent);
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--c-secondary);
  color: var(--f-fg);
  font-family: var(--font-body);
}

.s-footer::before{
  content: "";
  position: absolute;
  inset-block-start: 0;
  inset-inline: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-accent));
}

.s-footer::after{
  content: "";
  position: absolute;
  z-index: -1;
  pointer-events: none;
  inset-block-start: -58%;
  inset-inline-end: -14%;
  width: min(560px, 78vw);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at center,
    color-mix(in srgb, var(--c-primary) 42%, transparent) 0%,
    transparent 70%);
}

/* ---------- Layout ---------- */
.f-main{
  display: grid;
  grid-template-columns: 1.7fr 1fr 1.45fr 1fr;
  gap: 48px 40px;
  padding-block: 72px 48px;
}

/* ---------- Brand ---------- */
.f-brand{
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.f-logo{
  display: inline-block;
  min-height: 44px;
  max-width: 22ch;
  font-family: var(--font-head);
  font-size: clamp(1.05rem, 1.55vw, 1.3rem);
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: .01em;
  color: var(--f-strong);
  text-decoration: none;
  transition: color .22s ease;
}

.f-logo::after{
  content: "";
  display: block;
  width: 44px;
  height: 3px;
  border-radius: 2px;
  margin-block-start: 12px;
  background: var(--c-accent);
}

.f-logo:hover,
.f-logo:focus-visible{ color: var(--c-accent); }

.f-reg{
  margin: 18px 0 0;
  font-size: .85rem;
  line-height: 1.9;
  color: var(--f-muted);
}

.f-sep{
  margin-inline: 8px;
  color: color-mix(in srgb, var(--c-bg) 32%, var(--c-secondary));
}

/* ---------- Column titles ---------- */
.f-title{
  position: relative;
  margin: 0 0 14px;
  padding-block-end: 12px;
  font-family: var(--font-head);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--f-strong);
}

.f-title::after{
  content: "";
  position: absolute;
  inset-block-end: 0;
  inset-inline-start: 0;
  width: 28px;
  height: 3px;
  border-radius: 2px;
  background: var(--c-accent);
}

/* ---------- Links ---------- */
.f-links{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}

.f-links a{
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  font-size: .94rem;
  line-height: 1.65;
  color: var(--f-muted);
  text-decoration: none;
  transition: color .22s ease;
}

.f-links a:hover,
.f-links a:focus-visible{ color: var(--c-accent); }

.f-links a:focus-visible{
  outline: 2px solid var(--c-accent);
  outline-offset: 4px;
  border-radius: 6px;
}

.f-link-txt{ word-break: break-word; }

/* ---------- Contact icons ---------- */
.f-contact .icon-circle{
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  background: var(--f-chip);
  color: var(--c-accent);
  transition: background .22s ease, color .22s ease;
}

.f-contact .icon-circle svg{
  width: 17px;
  height: 17px;
}

.f-contact a:hover .icon-circle,
.f-contact a:focus-visible .icon-circle{
  background: color-mix(in srgb, var(--c-accent) 22%, transparent);
  color: var(--c-bg);
}

/* ---------- Registered office ---------- */
.f-office{
  margin: 24px 0 0;
  padding-block-start: 20px;
  border-block-start: 1px solid var(--f-line);
  font-size: .86rem;
  line-height: 1.85;
  color: var(--f-muted);
}

.f-office-label{
  display: block;
  margin-block-end: 6px;
  font-family: var(--font-head);
  font-size: .72rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--c-bg) 84%, var(--c-secondary));
}

/* ---------- Bottom bar ---------- */
.f-bottom{
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px 24px;
  padding-block: 18px;
  border-block-start: 1px solid var(--f-line);
  font-size: .84rem;
  color: var(--f-muted);
}

.f-copy{ margin: 0; }

.f-top{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  font-size: .84rem;
  color: var(--f-muted);
  text-decoration: none;
  transition: color .22s ease;
}

.f-top .icon-circle{
  width: 32px;
  height: 32px;
  background: var(--f-chip);
  color: var(--c-accent);
}

.f-top .icon-circle svg{
  width: 15px;
  height: 15px;
}

.f-top:hover,
.f-top:focus-visible{ color: var(--c-accent); }

.f-top:focus-visible{
  outline: 2px solid var(--c-accent);
  outline-offset: 4px;
  border-radius: 6px;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px){
  .f-main{
    grid-template-columns: 1fr 1fr;
    gap: 40px 32px;
    padding-block: 56px 40px;
  }
  .f-brand{ grid-column: 1 / -1; }
}

@media (max-width: 600px){
  .f-main{
    grid-template-columns: 1fr;
    gap: 32px;
    padding-block: 48px 32px;
  }
  .f-brand{ grid-column: auto; }
  .f-title{ margin-block-end: 10px; }
  .f-bottom{ justify-content: flex-start; }
  .f-office{ margin-block-start: 18px; }
}