/* 全局样式 - 深色主题 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-dark: #0f172a;
  --secondary-dark: #1e293b;
  --accent-gold: #fbbf24;
  --accent-gold-hover: #f59e0b;
  --text-primary: #ffffff;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-color: rgba(255, 255, 255, 0.1);
  --glass-bg: rgba(30, 41, 59, 0.6);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.4);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', '微软雅黑', Arial, sans-serif;
  background: var(--primary-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: var(--accent-gold);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

/* 导航栏 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 15px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo h2 {
  color: var(--accent-gold);
  font-size: 1.8rem;
  font-weight: bold;
  text-shadow: 0 2px 10px rgba(251, 191, 36, 0.3);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 30px;
}

.nav-menu li a {
  color: var(--text-primary);
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 8px;
  transition: all 0.3s ease;
}

.nav-menu li a:hover {
  background: rgba(251, 191, 36, 0.1);
  color: var(--accent-gold);
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 5px;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  border-radius: 3px;
  transition: all 0.3s ease;
}

/* 按钮样式 */
.btn {
  display: inline-block;
  padding: 12px 30px;
  background: linear-gradient(45deg, var(--accent-gold), var(--accent-gold-hover));
  color: var(--primary-dark);
  border: none;
  border-radius: 30px;
  font-size: 1.1rem;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(251, 191, 36, 0.3);
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(251, 191, 36, 0.5);
}

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

.btn-secondary:hover {
  background: var(--accent-gold);
  color: var(--primary-dark);
}

/* 卡片通用样式 */
.card {
  background: var(--glass-bg);
  border-radius: 12px;
  padding: 30px;
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

/* 表单样式 */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  margin-bottom: 8px;
  color: var(--text-secondary);
  font-weight: 500;
}

.form-input {
  width: 100%;
  padding: 12px 16px;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 1rem;
  transition: all 0.3s ease;
}

.form-input:focus {
  outline: none;
  border-color: var(--accent-gold);
  box-shadow: 0 0 0 3px rgba(251, 191, 36, 0.1);
}

.form-input::placeholder {
  color: var(--text-muted);
}

/* 页面容器 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 100px 20px 60px;
}

/* 加载动画 */
.loading {
  display: inline-block;
  width: 40px;
  height: 40px;
  border: 4px solid rgba(251, 191, 36, 0.1);
  border-top-color: var(--accent-gold);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* 工具提示 */
.tooltip {
  position: relative;
  cursor: pointer;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding: 8px 12px;
  background: var(--secondary-dark);
  color: var(--text-primary);
  border-radius: 6px;
  font-size: 0.85rem;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-md);
}

.tooltip:hover::after {
  opacity: 1;
  visibility: visible;
}

/* 徽章 */
.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
}

.badge-primary {
  background: rgba(251, 191, 36, 0.2);
  color: var(--accent-gold);
}

.badge-success {
  background: rgba(16, 185, 129, 0.2);
  color: #10b981;
}

.badge-danger {
  background: rgba(239, 68, 68, 0.2);
  color: #ef4444;
}

/* 网格布局 */
.grid {
  display: grid;
  gap: 30px;
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* Flex 工具类 */
.flex {
  display: flex;
}

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

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

.flex-gap-10 {
  gap: 10px;
}

.flex-gap-20 {
  gap: 20px;
}

/* 文本对齐 */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

/* 间距工具类 */
.mt-10 {
  margin-top: 10px;
}

.mt-20 {
  margin-top: 20px;
}

.mt-30 {
  margin-top: 30px;
}

.mb-10 {
  margin-bottom: 10px;
}

.mb-20 {
  margin-bottom: 20px;
}

.mb-30 {
  margin-bottom: 30px;
}

.p-20 {
  padding: 20px;
}

.p-30 {
  padding: 30px;
}

/* 隐藏元素 */
.hidden {
  display: none !important;
}

/* 动画 */
.fade-in {
  animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.slide-in-left {
  animation: slideInLeft 0.5s ease-out;
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.slide-in-right {
  animation: slideInRight 0.5s ease-out;
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}