/* =============================================================================
   Eternal Thread — Global Footer
   ============================================================================= */

#colophon {
  background: var(--surface-container);
  padding-top: var(--space-64);
  padding-bottom: var(--space-32);
  margin-top: var(--space-96);
}

.et-footer {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ── Top row: newsletter + links ── */
.et-footer__top {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-64);
  padding-bottom: var(--space-64);
}

/* Newsletter */
.et-footer__newsletter-label {
  font-family: var(--font-ui);
  font-size: var(--text-micro);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--on-surface);
  margin-bottom: var(--space-8);
}
.et-footer__newsletter-sub {
  font-family: var(--font-editorial);
  font-size: var(--text-body-sm);
  color: var(--on-surface-variant);
  margin-bottom: var(--space-24);
  line-height: 1.6;
  max-width: 28ch;
}
.et-footer__newsletter-form {
  display: flex;
  gap: 0;
}
.et-footer__newsletter-form input[type="email"] {
  flex: 1;
  font-family: var(--font-ui);
  font-size: var(--text-body-sm);
  padding: var(--space-12) var(--space-16);
  background: var(--surface-container-highest);
  border: none;
  border-bottom: 1px solid rgba(26, 28, 26, 0.20);
  outline: none;
  color: var(--on-surface);
  border-radius: 0;
  transition: border-color var(--transition-base);
}
.et-footer__newsletter-form input[type="email"]:focus {
  border-bottom-color: var(--secondary);
}
.et-footer__newsletter-form button {
  font-family: var(--font-ui);
  font-size: var(--text-micro);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: var(--space-12) var(--space-24);
  background: var(--primary);
  color: var(--on-primary);
  border: none;
  cursor: pointer;
  transition: opacity var(--transition-fast);
}
.et-footer__newsletter-form button:hover { opacity: 0.8; }

/* Link columns */
.et-footer__links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-32);
}
.et-footer__col-heading {
  font-family: var(--font-ui);
  font-size: var(--text-micro);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--on-surface);
  margin-bottom: var(--space-16);
}
.et-footer__col-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-12);
}
.et-footer__col-list a {
  font-family: var(--font-ui);
  font-size: var(--text-body-sm);
  color: var(--on-surface-variant);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.et-footer__col-list a:hover { color: var(--on-surface); }

/* ── Bottom bar ── */
.et-footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-32);
  gap: var(--space-32);
  flex-wrap: wrap;
}
.et-footer__brand {
  font-family: var(--font-display);
  font-size: var(--text-micro);
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--on-surface);
  text-decoration: none;
}
.et-footer__copy {
  font-family: var(--font-ui);
  font-size: var(--text-micro);
  color: var(--on-surface-variant);
  text-align: center;
  flex: 1;
}
.et-footer__est {
  font-family: var(--font-ui);
  font-size: var(--text-micro);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--on-surface-variant);
}

/* ── Social icons ── */
.et-footer__social {
  display: flex;
  gap: var(--space-12);
  margin-top: var(--space-24);
}
.et-footer__social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  color: var(--on-surface-variant);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.et-footer__social a:hover { color: var(--on-surface); }
.et-footer__social svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .et-footer__top { grid-template-columns: 1fr; gap: var(--space-48); }
  .et-footer__links { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .et-footer__links { grid-template-columns: 1fr; }
  .et-footer__bottom { flex-direction: column; align-items: flex-start; gap: var(--space-16); }
}