/* ==============================================================
   components.css · 公共组件样式
   --------------------------------------------------------------
   公共组件：
   1. 按钮 .btn
   2. 卡片 .card
   3. 导航栏 .site-header
   4. 页脚 .site-footer
   5. 面包屑 .breadcrumb
   6. 分页 .pagination
   7. 表单 .form
   8. 语言切换器 .lang-switch
   9. 移动端菜单 .mobile-menu
   ============================================================== */

/* 1. 按钮 ----------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color var(--transition-base),
              color var(--transition-base),
              border-color var(--transition-base),
              transform var(--transition-fast);
  white-space: nowrap;
}

.btn:active { transform: translateY(1px); }

.btn--primary {
  background-color: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
.btn--primary:hover { background-color: var(--color-accent-2); border-color: var(--color-accent-2); }

.btn--outline {
  background-color: transparent;
  color: var(--color-text-inverse);
  border-color: rgba(255, 255, 255, 0.4);
}
.btn--outline:hover { border-color: var(--color-accent); color: var(--color-accent); }

.btn--outline-light {
  background-color: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn--outline-light:hover { border-color: var(--color-accent); color: var(--color-accent); }

.btn--ghost {
  background: transparent;
  color: var(--color-accent);
  padding-inline: 0;
  text-transform: none;
  letter-spacing: 0;
}
.btn--ghost:hover { color: var(--color-accent-2); }

/* 胶囊按钮：圆角 + 不强制大写 */
.btn--pill {
  border-radius: 999px;
  padding-block: var(--space-3);
  padding-inline: var(--space-8);
  text-transform: none;
  letter-spacing: 0;
}

.btn--lg { padding: var(--space-4) var(--space-8); font-size: var(--font-size-base); }
.btn--block { display: flex; width: 100%; }

.btn .arrow {
  display: inline-block;
  transition: transform var(--transition-base);
}
.btn:hover .arrow { transform: translateX(4px); }


/* 2. 卡片 ----------------------------------------------------------- */

.card {
  background-color: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  transition: border-color var(--transition-base), transform var(--transition-base);
}
.card:hover {
  border-color: var(--color-border-accent);
  transform: translateY(-4px);
}

.card--light {
  background-color: #fff;
  border: 1px solid var(--color-border);
  color: var(--color-text);
}
.card--light:hover { border-color: var(--color-accent); }


/* 3. 导航栏 --------------------------------------------------------- */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  background-color: rgba(10, 23, 41, 0.98);
  border-bottom: 1px solid transparent;
  transition: background-color var(--transition-base),
              border-color var(--transition-base),
              box-shadow var(--transition-base),
              backdrop-filter var(--transition-base);
}

.site-header:hover {
  background-color: rgba(10, 23, 41, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom-color: var(--color-border-dark);
}

.site-header.is-scrolling,
.site-header.is-scrolling:hover {
  background-color: rgba(10, 23, 41, 0.98);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom-color: var(--color-border-dark);
  box-shadow: 0 1px 0 var(--color-border-dark);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height-mobile);
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding, 20px);
  padding-right: var(--container-padding, 20px);
}

@media (min-width: 1025px) {
  .site-header__inner { height: var(--header-height); }
}

.site-header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-inverse);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-spacing-wide);
}
.site-header__logo span { color: var(--color-accent); }
.site-header__logo img { height: 32px; width: auto; }

.site-nav { display: none; }

@media (min-width: 1025px) {
  .site-nav { display: block; }
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.site-nav__link {
  position: relative;
  display: inline-block;
  padding: var(--space-2) 0;
  color: var(--color-text-inverse);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
  transition: color var(--transition-base);
}
.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-base);
}
.site-nav__link:hover { color: var(--color-accent); }
.site-nav__link:hover::after,
.site-nav__link.is-active::after { width: 100%; }
.site-nav__link.is-active { color: var(--color-accent); }

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-inverse);
  font-size: var(--font-size-sm);
}
/*@media (min-width: 768px) { .lang-switch { display: inline-flex; } }*/
.lang-switch a {
  padding: 0 var(--space-1);
  opacity: 0.6;
  transition: opacity var(--transition-base);
}
.lang-switch a:hover,
.lang-switch a.is-active { opacity: 1; }
.lang-switch__sep { opacity: 0.4; }

.search-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: var(--color-text-inverse);
  border-radius: var(--radius-full);
  transition: background-color var(--transition-base);
}
.search-btn:hover { background-color: rgba(255, 255, 255, 0.1); }

.menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--color-text-inverse);
}
@media (min-width: 1025px) { .menu-toggle { display: none; } }

.menu-toggle__bar,
.menu-toggle__bar::before,
.menu-toggle__bar::after {
  display: block;
  width: 22px;
  height: 2px;
  background-color: currentColor;
  transition: transform var(--transition-base), opacity var(--transition-base);
}
.menu-toggle__bar { position: relative; }
.menu-toggle__bar::before,
.menu-toggle__bar::after {
  content: "";
  position: absolute;
  left: 0;
}
.menu-toggle__bar::before { top: -7px; }
.menu-toggle__bar::after  { top:  7px; }

.menu-toggle.is-open .menu-toggle__bar { background-color: transparent; }
.menu-toggle.is-open .menu-toggle__bar::before { transform: translateY(7px) rotate(45deg); }
.menu-toggle.is-open .menu-toggle__bar::after  { transform: translateY(-7px) rotate(-45deg); }


/* 4. 移动端菜单 ----------------------------------------------------- */

.mobile-menu {
  position: fixed;
  /*inset: var(--header-height-mobile) 0 0 0;*/
  top: var(--header-height-mobile);
  right: 0;
  bottom: 0;
  left: 0;
  z-index: var(--z-overlay);
  background-color: var(--color-bg-dark);
  padding: var(--space-8) var(--container-padding);
  transform: translateX(100%);
  transition: transform var(--transition-base);
  overflow-y: auto;
}
.mobile-menu.is-open { transform: translateX(0); }
@media (min-width: 1025px) { .mobile-menu { display: none; } }

.mobile-menu__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.mobile-menu__link {
  display: block;
  padding: var(--space-4) 0;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-inverse);
  border-bottom: 1px solid var(--color-border-dark);
  transition: color var(--transition-base);
}
.mobile-menu__link:hover,
.mobile-menu__link.is-active { color: var(--color-accent); }


/* 5. 页脚 ----------------------------------------------------------- */

.site-footer {
  position: static;          /* 显式声明：非 fixed/sticky，正常文档流 */
  background-color: var(--color-bg-dark);
  color: var(--color-text-inverse);
  padding-block: var(--space-10) var(--space-6);
  border-top: 1px solid var(--color-border-dark);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  max-width: var(--container-max);
  margin-inline: auto;
  /*padding-inline: var(--space-5);*/
}
@media (min-width: 768px) {
  .site-footer__grid { grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: var(--space-6); }
}

.site-footer__brand h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-spacing-wide);
  margin-bottom: var(--space-4);
  /* 标题使用渐变色（左白右蓝） */
  background: linear-gradient(90deg, #FFFFFF 0%, #0095FF 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  display: inline-block;
}
.site-footer__brand h3 span {
  /* 整体渐变时 span 不再单独着色 */
  color: inherit;
  -webkit-text-fill-color: transparent;
}
.site-footer__brand p {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  max-width: 32ch;
}

.site-footer__col h4 {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-wider);
  text-transform: uppercase;
  /*color: var(--color-text-muted);*/
  margin-bottom: var(--space-4);
}
.site-footer__list { display: flex; flex-direction: column; gap: var(--space-3); }
.site-footer__list a {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  transition: color var(--transition-base);
}
.site-footer__list a:hover { color: var(--color-accent); }

.site-footer__connect { display: flex; flex-direction: column; gap: var(--space-4); }
.site-footer__socials {
  display: flex;
  gap: var(--space-3);
}
.site-footer__socials a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-full);
  color: var(--color-text-inverse);
  transition: border-color var(--transition-base), color var(--transition-base);
}
.site-footer__socials a:hover { border-color: var(--color-accent); color: var(--color-accent); }
.site-footer__address {
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
  line-height: var(--line-height-relaxed);
  margin-top: var(--space-2);
}

.site-footer__bottom {
  margin-top: var(--space-8);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border-dark);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-5);
}
@media (min-width: 768px) {
  .site-footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-4);
  }
}
.site-footer__bottom a { color: inherit; }
.site-footer__bottom a:hover { color: var(--color-accent); }
.site-footer__badges { display: flex; gap: var(--space-2); align-items: center; }
.site-footer__badges .dot { color: var(--color-accent); }

/* GLOBAL STATUS 状态指示 */
.site-footer__status {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  letter-spacing: var(--letter-spacing-wider);
  white-space: nowrap;
}
.site-footer__status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background-color: #22C55E;
  box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.6);
  animation: site-footer__status-pulse 1.8s ease-out infinite;
}
@keyframes site-footer__status-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.6); }
  70%  { box-shadow: 0 0 0 6px rgba(34, 197, 94, 0); }
  100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}


/* 6. 面包屑 --------------------------------------------------------- */

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding: var(--space-5) 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border-dark);
}
.breadcrumb a {
  color: var(--color-text-muted);
  transition: color var(--transition-base);
}
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb__sep { color: var(--color-text-muted); opacity: 0.6; }
.breadcrumb__current { color: var(--color-text-inverse); }


/* 7. 分页 ----------------------------------------------------------- */

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding-block: var(--space-8);
  flex-wrap: wrap;
}
.pagination__btn {
  min-width: 36px;
  height: 36px;
  padding: 0 var(--space-3);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: transparent;
  border: 1px solid var(--color-border-dark);
  color: var(--color-text-inverse);
  font-size: var(--font-size-sm);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-base), color var(--transition-base), background-color var(--transition-base);
}
.pagination__btn:hover { border-color: var(--color-accent); color: var(--color-accent); }
.pagination__btn.is-active {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}
.pagination__btn:disabled { opacity: 0.4; cursor: not-allowed; }
.pagination__ellipsis { color: var(--color-text-muted); padding: 0 var(--space-1); }


/* 8. 表单 ----------------------------------------------------------- */

.form { display: flex; flex-direction: column; gap: var(--space-5); }
.form__field { display: flex; flex-direction: column; gap: var(--space-2); }
.form__label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-inverse);
}
.form__input,
.form__textarea {
  width: 100%;
  background-color: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border-dark);
  color: var(--color-text-inverse);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-base);
}
.form__input:focus,
.form__textarea:focus {
  border-color: var(--color-accent);
  outline: none;
}
.form__textarea { min-height: 160px; resize: vertical; }
.form__input::placeholder,
.form__textarea::placeholder { color: var(--color-text-muted); }


/* 9. 通用区块组件 --------------------------------------------------- */

.section-title {
  text-align: center;
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-inverse);
  letter-spacing: var(--letter-spacing-wide);
  margin-bottom: var(--space-3);
  text-transform: uppercase;
}
.section-title span { color: var(--color-accent); }

.section-subtitle {
  text-align: center;
  max-width: 64ch;
  margin: 0 auto var(--space-10);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
}

.page-hero {
  position: relative;
  min-height: 320px;
  display: flex;
  align-items: flex-end;
  padding-top: var(--header-height);
  color: var(--color-text-inverse);
  background-color: var(--color-bg-dark);
  background-size: cover;
  background-position: center;
  overflow: hidden;
}
.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,23,41,0.4) 0%, rgba(10,23,41,0.85) 100%);
  z-index: 1;
}
.page-hero .container { position: relative; z-index: 2; padding-bottom: var(--space-8); }

@media (max-width: 767px) {
  .site-footer__list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--space-2);
  }
  .site-footer__list li {
    width: calc(33.33% - var(--space-2));
  }
}

.about-hero,
.team-hero,
.cases-hero,
.news-hero,
.contact-hero,
.services-hero{
  margin-left: var(--container-padding);
  margin-right: var(--container-padding);
}