/**
 * AI工具导航网站主样式表
 * 样式参考tap4.ai的暗色系风格
 */

/* 全局样式重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* 全局变量 */
:root {
  --background-color: #18181b;
  --card-bg-color: #1e1e22;
  --text-color: #ffffff;
  --secondary-text-color: #a1a1aa;
  --accent-color: #FFD700; /* 强调色：金色 */
  --card-hover-color: #27272a;
  --header-height: 80px;
  --main-padding: 2rem;
  --border-radius: 12px;
  --button-radius: 9999px; /* 圆形按钮 */
  --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --transition-speed: 0.3s;
}

/* 基础样式 */
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
  background-color: var(--background-color);
  color: var(--text-color);
  line-height: 1.6;
}

a {
  color: var(--text-color);
  text-decoration: none;
  transition: color var(--transition-speed) ease;
}

a:hover {
  color: var(--accent-color);
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

img {
  max-width: 100%;
  height: auto;
}

/* 布局容器 */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* 顶部导航栏 */
.header {
  position: sticky;
  top: 0;
  background-color: var(--background-color);
  backdrop-filter: blur(10px);
  padding: 1rem 0;
  z-index: 100;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  display: flex;
  align-items: center;
  animation: none;
  transition: none;
}

.logo img {
  height: 36px;
  margin-right: 10px;
  animation: none;
  transition: none;
}

.logo-text {
  margin-left: 12px; /* 添加左边距，增加间隔 */
  font-weight: bold;
}

/* 搜索框 */
.search-container {
  position: relative;
  width: 100%;
  max-width: 500px;
  margin: 0 auto;
}

.search-input {
  width: 100%;
  padding: 12px 20px;
  padding-right: 50px;
  border-radius: 30px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--text-color);
  font-size: 1rem;
  transition: all var(--transition-speed) ease;
}

.search-input:focus {
  outline: none;
  border-color: var(--accent-color);
  background-color: rgba(255, 255, 255, 0.08);
}

.search-button {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--secondary-text-color);
  font-size: 1.2rem;
  padding: 5px;
}

/* 中央搜索框 */
.central-search-section {
  padding: 0.5rem 0 1.5rem;
}

.central-search-container {
  display: flex;
  justify-content: center;
  align-items: center;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 1rem;
}

.search-wrapper {
  position: relative;
  width: 100%;
}

.central-search-input {
  width: 100%;
  padding: 14px 24px;
  padding-right: 60px;
  border-radius: var(--button-radius);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--text-color);
  font-size: 1.1rem;
  transition: all var(--transition-speed) ease;
}

.central-search-input:focus {
  outline: none;
  border-color: var(--accent-color);
  background-color: rgba(255, 255, 255, 0.08);
}

.central-search-button {
  position: absolute;
  right: 15px;
  top: 50%;
  transform: translateY(-50%);
  background-color: var(--accent-color);
  color: #000000;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: all var(--transition-speed) ease;
}

.central-search-button:hover {
  background-color: #e6c200;
}

/* 语言选择器 */
.language-selector {
  position: relative;
  margin-left: 1rem;
  z-index: 10;
}

.language-button {
  display: flex;
  align-items: center;
  padding: 8px 16px;
  background-color: rgba(255, 255, 255, 0.05);
  border-radius: var(--button-radius);
  color: var(--text-color);
  transition: all var(--transition-speed) ease;
}

.language-button:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.language-button span {
  margin-right: 8px;
}

.language-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 8px;
  width: 180px;
  background-color: var(--card-bg-color);
  border-radius: var(--border-radius);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
  overflow: hidden;
  visibility: hidden;
  opacity: 0;
  transform: translateY(-10px);
  transition: all 0.3s ease;
  z-index: 100;
}

/* 显示下拉菜单 */
.language-dropdown.show {
  visibility: visible;
  opacity: 1;
  transform: translateY(0);
}

.language-option {
  display: block;
  padding: 12px 16px;
  color: var(--text-color);
  transition: all 0.2s ease;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.language-option:last-child {
  border-bottom: none;
}

.language-option:hover {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--accent-color);
}

/* 当前选择的语言高亮显示 */
.language-option.active {
  background-color: rgba(255, 215, 0, 0.1);
  color: var(--accent-color);
  font-weight: 500;
}

/* 页面横幅 */
.banner {
  text-align: center;
  padding: 2rem 0;
}

.banner h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.banner p {
  color: var(--secondary-text-color);
  font-size: 1.2rem;
  max-width: 700px;
  margin: 0 auto;
}

.sponsor {
  margin-top: 1.5rem;
  font-size: 1.1rem;
}

.sponsor a {
  color: var(--accent-color);
  font-weight: bold;
}

/* 分类导航 */
.category-nav-section {
  overflow: hidden;
  padding: 0.5rem 0;
  margin-bottom: 1rem;
}

.category-nav {
  display: flex;
  overflow-x: auto;
  gap: 0.75rem;
  padding: 0.5rem 0;
  -ms-overflow-style: none;  /* IE and Edge */
  scrollbar-width: none;  /* Firefox */
}

.category-nav::-webkit-scrollbar {
  display: none;
}

.category-button {
  padding: 0.7rem 1.2rem;
  border-radius: var(--button-radius);
  background-color: var(--card-bg-color);
  color: var(--text-color);
  white-space: nowrap;
  transition: all var(--transition-speed) ease;
  font-weight: 500;
}

.category-button:hover {
  background-color: var(--card-hover-color);
}

.category-button.active {
  background-color: var(--accent-color);
  color: #000000;
  font-weight: 600;
}

/* 工具卡片网格 */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  padding: 2rem 0;
}

.tool-card {
  background-color: var(--card-bg-color);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.tool-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.tool-image {
  width: 100%;
  height: 160px;
  overflow: hidden;
  position: relative;
  background-color: #27272e;
}

.tool-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-speed) ease;
}

.tool-card:hover .tool-image img {
  transform: scale(1.05);
}

.tool-content {
  padding: 1.5rem;
}

.tool-title {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.tool-description {
  color: var(--secondary-text-color);
  font-size: 0.9rem;
  margin-bottom: 1rem;
  line-height: 1.5;
}

.tool-link {
  display: inline-flex;
  align-items: center;
  color: var(--accent-color);
  font-weight: 500;
  font-size: 0.9rem;
}

.tool-link svg {
  margin-left: 5px;
  transition: transform var(--transition-speed) ease;
}

.tool-link:hover svg {
  transform: translateX(5px);
}

/* 页脚 */
.footer {
  padding: 3rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  margin-top: 3rem;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-links {
  display: flex;
  gap: 1rem;
}

.copyright {
  color: var(--secondary-text-color);
  font-size: 0.9rem;
}

/* 实用类 */
.hidden {
  display: none;
}

.text-accent {
  color: var(--accent-color);
}

.section-title {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}