/* ================================================================
   Footer — Clean Custom CSS (ftr-* namespace)
   Uses variables from assets/css/style.css :root
   ================================================================ */

.ftr {
  position: relative;
  margin-top: 6rem;
  border-top: 1px solid var(--border);
  background: var(--carbon);
}

.ftr-line {
  position: absolute;
  inset-inline: 0;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--primary) 50%, transparent 100%);
}

.ftr-inner {
  width: 100%;
  max-width: 80rem;
  margin-inline: auto;
  padding: 4rem 1rem;
}

@media (min-width: 768px) {
  .ftr-inner { padding-inline: 2rem; }
}

.ftr-grid {
  display: grid;
  gap: 3rem;
}

@media (min-width: 1024px) {
  .ftr-grid { grid-template-columns: repeat(4, 1fr); }
}

/* ── Brand Column ──────────────────────────────────────────── */
.ftr-brand-logo {
  display: inline-flex;
  align-items: center;
}

.ftr-brand-logo:hover img {
  transform: scale(1.05);
}

.ftr-brand-logo img {
  height: 3rem;
  width: auto;
  object-fit: contain;
  transition: transform var(--transition-fast);
}

@media (min-width: 640px) {
  .ftr-brand-logo img { height: 3.5rem; }
}

.ftr-about {
  margin-top: 1rem;
  font-size: 0.875rem;
  color: var(--muted-fg);
  max-width: 20rem;
}

.ftr-social {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.ftr-social-link {
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.ftr-social-link:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.ftr-social-link svg {
  width: 1rem;
  height: 1rem;
}

/* ── Column Heading ────────────────────────────────────────── */
.ftr-col-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--primary);
}

/* ── Links List ────────────────────────────────────────────── */
.ftr-links {
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.875rem;
}

.ftr-link {
  color: var(--muted-fg);
  transition: color var(--transition-fast);
}

.ftr-link:hover,
.ftr-link.is-active {
  color: var(--primary);
}

/* ── Contact List ──────────────────────────────────────────── */
.ftr-contact {
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  font-size: 0.875rem;
  color: var(--muted-fg);
}

.ftr-contact-item {
  display: flex;
  gap: 0.75rem;
}

.ftr-contact-item svg {
  width: 1rem;
  height: 1rem;
  margin-top: 0.125rem;
  flex-shrink: 0;
  color: var(--primary);
}

.ftr-contact-item a {
  color: var(--muted-fg);
  transition: color var(--transition-fast);
}

.ftr-contact-item a:hover {
  color: var(--primary);
}

/* ── Newsletter ────────────────────────────────────────────── */
.ftr-sub-text {
  margin-top: 1rem;
  font-size: 0.875rem;
  color: var(--muted-fg);
}

.ftr-sub-form {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 1rem;
}

@media (min-width: 640px) {
  .ftr-sub-form { flex-direction: row; }
}

.ftr-sub-input {
  display: flex;
  height: 2.25rem;
  width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid var(--input);
  padding: 0 0.75rem;
  font-size: 0.875rem;
  color: var(--fg);
  background: rgba(43, 45, 46, 0.6);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.ftr-sub-input::placeholder { color: var(--muted-fg); }

.ftr-sub-input:focus-visible {
  outline: none;
  box-shadow: 0 0 0 1px var(--ring);
}

.ftr-sub-input:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.ftr-sub-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  white-space: nowrap;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  height: 2.25rem;
  padding: 0 1rem;
  background: var(--gradient-primary);
  color: var(--primary-fg);
  box-shadow: var(--shadow-glow);
  border: none;
  flex-shrink: 0;
  transition: filter var(--transition-fast), box-shadow var(--transition-fast);
}

.ftr-sub-btn:hover {
  box-shadow: var(--shadow-glow-strong);
  filter: brightness(1.1);
}

.ftr-sub-btn:focus-visible {
  outline: 1px solid var(--ring);
}

.ftr-sub-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

.ftr-sub-btn svg {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
}

/* ── Bottom Bar ────────────────────────────────────────────── */
.ftr-bottom {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 3rem;
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  font-size: 0.75rem;
  color: var(--muted-fg);
}

@media (min-width: 640px) {
  .ftr-bottom {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}