/**
 * Components CSS - 组件样式
 */

/* ========== Top Bar组件 ========== */
.top-bar {
  background: #FFFFFF;
  border-bottom: 1px solid #DCDCDC;
  height: 30px;
  font-size: 12px;
  color: #757575;
  box-sizing: border-box;
  display: flex;
  align-items: center;
}

.top-bar .container {
  height: 100%;
  display: flex;
  align-items: center;
}

.top-bar__content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  height: 100%;
}

.top-bar__text {
  color: #186338;
}

.top-bar__right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.top-bar__links {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-right: 15px;
}

.top-bar__links a {
  color: #646A73;
  text-decoration: none;
  transition: color var(--transition-base);
}

.top-bar__links a:hover {
  color: var(--color-primary);
}

.top-bar__divider {
  color: #646A73;
  margin: 0 6px;
}

.top-bar__search {
  cursor: pointer;
}

/* 语言下拉 - 中英文切换 */
.lang-dropdown {
  position: relative;
  z-index: 1;
}

.lang-dropdown.is-open {
  z-index: 1100;
}

.lang-dropdown__trigger {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 4px;
  border: none;
  background: transparent;
  color: #646A73;
  font-size: 12px;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: color var(--transition-base);
}

.lang-dropdown__trigger:hover {
  color: var(--text-primary);
}

/* 图标：用 filter 控制颜色，默认黑色 */
.lang-dropdown__icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  display: block;
  object-fit: contain;
  filter: brightness(0);
  transition: filter var(--transition-base);
}

/* 点击展开后图标变绿（恢复原图颜色，若图标本身为绿色） */
.lang-dropdown.is-open .lang-dropdown__icon {
  filter: none;
}

.lang-dropdown.is-open .lang-dropdown__trigger {
  color: var(--color-primary);
}

.lang-dropdown__label {
  white-space: nowrap;
}

/* 下拉三角展开时旋转 */
.lang-dropdown__icon--arrow {
  transition: transform var(--transition-base), filter var(--transition-base);
}

.lang-dropdown.is-open .lang-dropdown__icon--arrow {
  transform: rotate(180deg);
}

/* 下拉面板 */
.lang-dropdown__panel {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 6px;
  min-width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-dropdown);
  overflow: hidden;
  display: none;
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.lang-dropdown.is-open .lang-dropdown__panel {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

.lang-dropdown__option {
  padding: 8px 14px;
  font-size: 12px;
  color: var(--text-primary);
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
}

.lang-dropdown__option:hover {
  background: var(--bg-secondary);
  color: var(--color-primary);
}

.lang-dropdown__option[aria-selected="true"] {
  background: rgba(24, 99, 56, 0.08);
  color: var(--color-primary);
  font-weight: var(--font-weight-medium);
}

/* ========== Button组件 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 16px;
  font-size: 12px;
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  outline: none;
  white-space: nowrap;
}

.btn--primary {
  background-color: var(--color-primary);
  color: var(--text-inverse);
}

.btn--primary:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(46, 125, 50, 0.3);
}

.btn--primary:active {
  transform: translateY(0);
}

.btn--secondary {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn--secondary:hover {
  background-color: var(--color-primary);
  color: var(--text-inverse);
}

.btn--large {
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: var(--font-size-lg);
}

.btn--small {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-sm);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* ========== Card组件 ========== */
.card {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card__image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card__body {
  padding: var(--spacing-md);
}

.card__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.card__description {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
}

.card__footer {
  padding: var(--spacing-sm) var(--spacing-md);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ========== Header组件 ========== */
.header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: var(--bg-primary);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
  border-bottom: 1px solid var(--border-color);
  height: 78px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.header__inner {
  width: 1200px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
  margin: 0 auto;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

.header__logo img {
  height: 50px;
  width: auto;
}

.header_right {
  display: flex;
  align-items: center;
}

.header__nav {
  display: flex;
  align-items: center;
  height: 100%;
}

.header_right .btn {
  height: 26px;
  margin-left: 40px;
}

.header__nav-item {
  font-size: 16px;
  color: #646A73;
  transition: color var(--transition-base);
  text-decoration: none;
  position: relative;
  width: 90px;
  text-align: center;
  height: 78px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.header__nav-item:hover,
.header__nav-item--active {
  color: var(--color-primary);
  background: #EEF0F6;
  font-weight: bold;
}

.header__nav-item--active::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-primary);
}



.page-account {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: 38px;
  font-size: 16px;
  color: var(--color-primary);
  text-decoration: none;
}

.page-account img {
  width: 30px;
  height: 30px;
}

.page-account:hover {
  opacity: 0.9;
}

/* ========== Footer组件 ========== */
.footer {
  background: var(--color-primary);
  color: var(--text-inverse);
  padding: 32px 0 24px;
  margin-top: 0;
}

.footer__content {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
}

.footer__links {
  display: flex;
  gap: 32px;
  justify-content: center;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  width: 100%;
  max-width: 600px;
}

.footer__links a {
  color: var(--text-inverse);
  font-size: 14px;
  text-decoration: none;
  transition: opacity var(--transition-base);
}

.footer__links a:hover {
  opacity: 0.85;
}

.footer__info {
  text-align: center;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.8;
}

.footer__info p {
  margin-bottom: 2px;
}

/* ========== SearchBar组件 ========== */
.search-bar {
  display: flex;
  width: 800px;
  height: 59px;
  margin: 0 auto;
  background: var(--bg-primary);
  overflow: hidden;
  box-shadow: 0px 4px 15px 0px rgba(0, 0, 0, 0.3);
  border-radius: 10px 10px 10px 10px;
  align-items: center;
  padding:0  7px;

}

.search-bar__input {
  flex: 1;
  padding: 0 20px;
  font-size: 15px;
  border: none;
  outline: none;
  color: var(--text-primary);
}

.search-bar__input::placeholder {
  color: rgba(0,0,0,0.2);
  font-size: 15px;
}

.search-bar__button {
  width: 104px;
  height: 48px;
  background: #186338;
  border-radius: 10px 10px 10px 10px;
  line-height: 24px;
  font-size: 16px;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.search-bar__button .icon {
  width: 24px;
  height: 24px;
}

.search-bar__button:hover {
  background: var(--color-primary-dark);
}




/* 账号入口（与物种检索页一致） */
.change-password-account {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: 38px;
  font-size: 16px;
  color: var(--color-primary);
  text-decoration: none;
}

.change-password-account img {
  width: 30px;
  height: 30px;
}

.change-password-account:hover {
  opacity: 0.9;
}



/* ========== 响应式 ========== */
@media (max-width: 768px) {
  .header__nav {
    display: none;
  }

  .search-bar {
    flex-direction: column;
  }

  .card__image {
    height: 150px;
  }
}