/* ================================================================
   DataHints DS — Footer Component
   Requires: tokens.css
   ================================================================ */

/* ────────────────────────────────────────────────────────────
   FOOTER TOKENS
──────────────────────────────────────────────────────────── */
:root {
  --footer-pad-y:     var(--sp-16);   /* top/bottom padding for main area */
  --footer-bottom-h:  56px;           /* copyright bar height */
}

/* ────────────────────────────────────────────────────────────
   FOOTER BASE
──────────────────────────────────────────────────────────── */
.dh-footer {
  background: var(--bg-subtle);
  border-top: 1px solid var(--border-s);
  border-radius: var(--r-md) var(--r-md) 0 0;
  margin: 0 var(--sp-4);       /* 16px — mirrors nav left/right offset */
  padding: 0 var(--nav-h-pad); /* 20px — padding BEFORE centering, same as .dh-nav */
}

/* Mirrors .dh-nav-inner: max-w + auto centering, no own padding */
.dh-footer-inner {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0;
}

/* ────────────────────────────────────────────────────────────
   MAIN AREA — brand + nav columns
──────────────────────────────────────────────────────────── */
.dh-footer-main {
  padding: var(--footer-pad-y) 0 var(--sp-12);
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: var(--sp-16);
  align-items: start;
}

/* ── Brand column ── */
.dh-footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}

.dh-footer-logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  opacity: 1;
  transition: opacity var(--ease-fast);
  width: fit-content;
}
.dh-footer-logo:hover { opacity: 0.75; }
.dh-footer-logo:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: var(--r-xs);
}

.dh-footer-logo-img {
  height: 22px;
  width: auto;
  display: block;
}
/* Theme-aware logo — mirrors navigation.css pattern */
.dh-footer-logo-img--white { display: block; }
.dh-footer-logo-img--black { display: none; }
[data-theme="light"] .dh-footer-logo-img--white { display: none; }
[data-theme="light"] .dh-footer-logo-img--black { display: block; }

.dh-footer-tagline {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--fg-3);
  max-width: 220px;
}

/* Social links */
.dh-footer-socials {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  margin-top: var(--sp-2);
}

.dh-footer-social {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--r-xs);
  border: 1px solid var(--border);
  color: var(--fg-3);
  text-decoration: none;
  transition:
    color var(--ease-fast),
    background var(--ease-fast),
    border-color var(--ease-fast);
  cursor: pointer;
}
.dh-footer-social:hover {
  color: var(--fg);
  background: var(--bg-card-h);
  border-color: var(--border-a);
}
.dh-footer-social:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.dh-footer-social svg {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
}

/* ── Nav columns ── */
.dh-footer-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-8);
}

.dh-footer-col-title {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--fg-3);
  margin: 0 0 var(--sp-4);
}

.dh-footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.dh-footer-link {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 400;
  color: var(--fg-2);
  text-decoration: none;
  display: inline-block;
  transition: color var(--ease-fast);
  cursor: pointer;
}
.dh-footer-link:hover { color: var(--fg); }
.dh-footer-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ────────────────────────────────────────────────────────────
   BOTTOM BAR — copyright + legal
──────────────────────────────────────────────────────────── */
.dh-footer-bottom {
  border-top: 1px solid var(--border);
}

.dh-footer-bottom-inner {
  height: var(--footer-bottom-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-6);
}

.dh-footer-copy {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  color: var(--fg-3);
  white-space: nowrap;
}

.dh-footer-legal {
  display: flex;
  align-items: center;
  gap: var(--sp-5);
}

.dh-footer-legal-link {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  color: var(--fg-3);
  text-decoration: none;
  transition: color var(--ease-fast);
  white-space: nowrap;
  cursor: pointer;
}
.dh-footer-legal-link:hover { color: var(--fg-2); }
.dh-footer-legal-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ────────────────────────────────────────────────────────────
   RESPONSIVE
──────────────────────────────────────────────────────────── */

/* Tablet: stack brand + nav */
@media (max-width: 899px) {
  .dh-footer-main {
    grid-template-columns: 1fr;
    gap: var(--sp-10);
  }

  .dh-footer-brand {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: flex-start;
    gap: var(--sp-6);
  }

  .dh-footer-tagline { max-width: 300px; }
}

/* Mobile: collapse nav to 2 columns */
@media (max-width: 599px) {
  .dh-footer-main {
    padding-top: var(--sp-10);
    padding-bottom: var(--sp-8);
  }

  .dh-footer-brand {
    flex-direction: column;
    gap: var(--sp-4);
  }

  .dh-footer-nav {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--sp-6);
  }

  .dh-footer-bottom-inner {
    flex-direction: column;
    height: auto;
    padding: var(--sp-5) 0;
    align-items: flex-start;
    gap: var(--sp-3);
  }

  .dh-footer-legal {
    gap: var(--sp-4);
    flex-wrap: wrap;
  }
}

/* Small mobile: single column nav */
@media (max-width: 374px) {
  .dh-footer-nav {
    grid-template-columns: 1fr;
  }
}