/* ================================================================
   岳西人网 - Footer 样式 v3
   深炭色主题 + 4列 Grid 布局 + 清晰信息层级
   ================================================================ */

/* ----------------------------------------------------------------
   基础容器
   ---------------------------------------------------------------- */
.site-footer {
  background: #1C1917;
  position: relative;
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 64px 48px 0;
}

/* ----------------------------------------------------------------
   4列 Grid 布局：品牌(1fr) + 3列链接(各1fr)
   ---------------------------------------------------------------- */
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1fr;
  gap: 48px;
}

/* ----------------------------------------------------------------
   品牌区
   ---------------------------------------------------------------- */
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.footer-logo {
  line-height: 0;
}

.footer-logo-img {
  height: 36px;
  width: auto;
  filter: brightness(0) invert(1);
  opacity: 0.9;
  transition: opacity 0.2s;
}

.footer-logo:hover .footer-logo-img {
  opacity: 1;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.6);
  margin: 0;
}

/* 社交图标 */
.footer-social {
  display: flex;
  gap: 12px;
  margin-top: 4px;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.7);
  font-size: 18px;
  text-decoration: none;
  transition: all 0.25s;
}

.social-link:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  transform: translateY(-2px);
}

/* ----------------------------------------------------------------
   链接列
   ---------------------------------------------------------------- */
.footer-col {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-col-title {
  font-size: 15px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.9);
  margin: 0;
  letter-spacing: 0.3px;
  white-space: nowrap;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  transition: color 0.2s;
  line-height: 1.5;
  margin: 0;
}

a.footer-link:hover {
  color: rgba(255, 255, 255, 1);
}

/* 纯文本链接（无 hover 变化） */
.footer-link--text {
  cursor: default;
}

/* ----------------------------------------------------------------
   底部版权栏
   ---------------------------------------------------------------- */
.footer-bottom {
  margin-top: 48px;
  padding: 24px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-copyright {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.3);
  margin: 0;
}

.footer-icp {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.3);
  margin: 0;
}

/* ----------------------------------------------------------------
   响应式 - 平板（<=1024px）
   ---------------------------------------------------------------- */
@media (max-width: 1024px) {
  .footer-inner {
    padding: 48px 32px 0;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

/* ----------------------------------------------------------------
   响应式 - 移动端（<=750px）
   ---------------------------------------------------------------- */
@media (max-width: 750px) {
  .footer-inner {
    padding: 40px 20px 0;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-brand {
    gap: 16px;
  }

  .footer-logo-img {
    height: 30px;
  }

  .footer-desc {
    font-size: 13px;
  }

  .footer-col-title {
    font-size: 14px;
  }

  .footer-link {
    font-size: 13px;
  }

  .footer-bottom {
    margin-top: 36px;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .footer-copyright,
  .footer-icp {
    font-size: 12px;
  }
}