/**
 * 心理测评系统 - 全局样式 V2.0
 * 设计理念：轻盈 · 专业 · 舒适 · 温暖
 */

/* ============================================
   CSS 变量定义
   ============================================ */
:root {
  /* 主色调 */
  --color-bg-primary: #F1F1F3;
  --color-bg-light: #F8F8FA;
  --color-bg-dark: #E8E8ED;
  
  /* 品牌色 */
  --color-brand: #9A9AB0;
  --color-brand-light: #A7B8C9;
  --color-brand-lighter: #B5C0B0;
  
  /* 辅助色 */
  --color-accent-blue: #A7B8C9;
  --color-accent-green: #B5C0B0;
  
  /* 功能色 */
  --color-success: #8FB89C;
  --color-warning: #D4A574;
  --color-error: #C9958A;
  --color-info: #A7B8C9;
  
  /* 文字色 */
  --color-text-primary: #2C2C2C;
  --color-text-title: #1A1A1A;
  --color-text-secondary: #6B6B78;
  --color-text-light: #9A9AB0;
  --color-text-tertiary: #A2A2B0;
  --color-text-placeholder: #B8B8C4;
  
  /* 背景和边框 */
  --color-card-bg: #FFFFFF;
  --color-border-light: #E8E8ED;
  --color-border-medium: #D4D4DD;
  --color-border-dark: #B8B8C4;
  
  /* 阴影 */
  --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.03);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 6px 20px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 4px 16px rgba(154, 154, 176, 0.12);
  
  /* 圆角 */
  --radius-xs: 6px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-2xl: 24px;
  --radius-full: 9999px;
  
  /* 间距 (8px网格) */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 12px;
  --spacing-base: 16px;
  --spacing-lg: 20px;
  --spacing-xl: 24px;
  --spacing-2xl: 32px;
  --spacing-3xl: 40px;
  
  /* 动画 */
  --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s ease;
}

/* ============================================
   基础样式重置
   ============================================ */
* {
  -webkit-tap-highlight-color: transparent;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 
               'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', 
               Arial, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background: linear-gradient(180deg, #F8F8FA 0%, #F1F1F3 50%, #F8F8FA 100%);
  background-attachment: fixed;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
}

/* 添加微妙的背景纹理 */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 20% 50%, rgba(154, 154, 176, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(167, 184, 201, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 40% 20%, rgba(181, 192, 176, 0.02) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* 确保内容在背景之上 */
body > * {
  position: relative;
  z-index: 1;
}

/* ============================================
   字体样式
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: 600;
  color: var(--color-text-title);
}

h1 {
  font-size: 1.75rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 1.375rem;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.125rem;
  font-weight: 500;
}

h4 {
  font-size: 1rem;
  font-weight: 500;
}

p {
  margin: 0;
}

/* ============================================
   布局容器
   ============================================ */
.container {
  max-width: 640px;
  margin: 0 auto;
  padding: 0 var(--spacing-base);
}

/* ============================================
   导航栏样式
   ============================================ */
.navbar-v2 {
  background: rgba(248, 248, 250, 0.85);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  border-bottom: 1px solid rgba(232, 232, 237, 0.6);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02), 0 1px 2px rgba(154, 154, 176, 0.05);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: var(--transition-base);
}

.navbar-v2::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(154, 154, 176, 0.1) 50%, transparent 100%);
}

.navbar-v2 .navbar-title {
  color: var(--color-text-title);
  font-size: 1.125rem;
  font-weight: 600;
}

.navbar-v2 .navbar-icon {
  color: var(--color-brand);
  font-size: 1.25rem;
}

/* ============================================
   卡片样式
   ============================================ */
.card-v2 {
  background: linear-gradient(145deg, #FFFFFF 0%, #FEFEFE 100%);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(255, 255, 255, 0.8);
  transition: var(--transition-base);
  position: relative;
}

.card-v2::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(154, 154, 176, 0.1) 50%, transparent 100%);
}

.card-v2:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
  background: linear-gradient(145deg, #FFFFFF 0%, #FAFAFA 100%);
}

.card-v2:active {
  transform: translateY(0) scale(0.99);
}

/* 测试卡片 - 带装饰条 */
.test-card-v2 {
  background: linear-gradient(145deg, #FFFFFF 0%, #FEFEFE 100%);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-bottom: 3px solid var(--color-accent-green);
  transition: var(--transition-base);
  cursor: pointer;
  position: relative;
}

.test-card-v2::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(181, 192, 176, 0.15) 50%, transparent 100%);
}

.test-card-v2:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
  border-bottom-color: var(--color-brand);
  background: linear-gradient(145deg, #FFFFFF 0%, #FAFAFA 100%);
}

.test-card-v2 .test-title {
  color: var(--color-text-title);
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.test-card-v2 .test-description {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  line-height: 1.5;
  margin-bottom: var(--spacing-md);
}

/* ============================================
   按钮样式
   ============================================ */
.btn-v2 {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: var(--radius-xl);
  font-size: 15px;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: var(--transition-base);
  text-decoration: none;
  outline: none;
}

.btn-v2:active {
  transform: scale(0.98);
}

/* 主按钮 */
.btn-primary-v2 {
  background: linear-gradient(135deg, #9A9AB0 0%, #8A8A9F 100%);
  color: #FFFFFF;
  box-shadow: 0 2px 8px rgba(154, 154, 176, 0.25), 0 1px 3px rgba(154, 154, 176, 0.15);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
}

.btn-primary-v2::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
  transition: left 0.5s;
}

.btn-primary-v2:hover::before {
  left: 100%;
}

.btn-primary-v2:hover {
  background: linear-gradient(135deg, #8A8A9F 0%, #7A7A8F 100%);
  box-shadow: 0 4px 12px rgba(154, 154, 176, 0.35), 0 2px 6px rgba(154, 154, 176, 0.2);
  transform: translateY(-1px);
}

.btn-primary-v2:active {
  transform: translateY(0) scale(0.98);
}

/* 次要按钮 */
.btn-secondary-v2 {
  background: linear-gradient(145deg, #FFFFFF 0%, #FAFAFA 100%);
  color: var(--color-text-secondary);
  border: 1.5px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
}

.btn-secondary-v2:hover {
  border-color: var(--color-brand);
  color: var(--color-brand);
  background: linear-gradient(145deg, #FFFFFF 0%, #F8F8FA 100%);
  box-shadow: 0 2px 6px rgba(154, 154, 176, 0.12);
  transform: translateY(-1px);
}

/* 辅助按钮 - 柔和绿 */
.btn-tertiary-v2 {
  background: var(--color-card-bg);
  color: var(--color-accent-green);
  border: 1.5px solid var(--color-accent-green);
  border-radius: var(--radius-xl);
}

.btn-tertiary-v2:hover {
  background: rgba(181, 192, 176, 0.05);
}

/* 幽灵按钮 */
.btn-ghost-v2 {
  background: transparent;
  color: var(--color-text-secondary);
  border: none;
  padding: 8px 16px;
  border-radius: var(--radius-md);
}

.btn-ghost-v2:hover {
  background: var(--color-bg-primary);
  color: var(--color-brand);
  border-radius: var(--radius-lg);
}

/* 大按钮 */
.btn-lg {
  padding: 16px 32px;
  font-size: 16px;
  border-radius: var(--radius-2xl);
}

/* 小按钮 */
.btn-sm {
  padding: 8px 16px;
  font-size: 14px;
  border-radius: var(--radius-md);
}

/* 圆形按钮 */
.btn-circle {
  border-radius: var(--radius-full);
  padding: 12px;
  width: 44px;
  height: 44px;
}

/* ============================================
   输入框样式
   ============================================ */
.input-v2 {
  width: 100%;
  background: var(--color-card-bg);
  border: 1.5px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  padding: 12px 16px;
  font-size: 15px;
  color: var(--color-text-primary);
  transition: var(--transition-base);
  outline: none;
}

.input-v2::placeholder {
  color: var(--color-text-placeholder);
}

.input-v2:focus {
  border-color: var(--color-brand);
  box-shadow: 0 0 0 3px rgba(154, 154, 176, 0.1);
}

/* 文本域 */
textarea.input-v2 {
  min-height: 100px;
  resize: vertical;
}

/* 搜索框 */
.input-search {
  border-radius: var(--radius-full);
  padding-left: 40px;
}

/* ============================================
   标签/徽章
   ============================================ */
.badge-v2 {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  background: var(--color-bg-primary);
  color: var(--color-text-secondary);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 500;
}

.badge-primary {
  background: rgba(154, 154, 176, 0.1);
  color: var(--color-brand);
  border-radius: var(--radius-full);
}

.badge-success {
  background: rgba(143, 184, 156, 0.1);
  color: var(--color-success);
  border-radius: var(--radius-full);
}

.badge-warning {
  background: rgba(212, 165, 116, 0.1);
  color: var(--color-warning);
  border-radius: var(--radius-full);
}

/* ============================================
   进度条
   ============================================ */
.progress-v2 {
  width: 100%;
  height: 6px;
  background: var(--color-border-light);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill-v2 {
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent-blue) 0%, var(--color-brand) 100%);
  border-radius: var(--radius-full);
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   选项卡/Radio
   ============================================ */
.option-v2 {
  background: var(--color-card-bg);
  border: 1.5px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  padding: 16px;
  cursor: pointer;
  transition: var(--transition-base);
  margin-bottom: var(--spacing-md);
}

.option-v2:hover {
  border-color: var(--color-brand);
  background: rgba(154, 154, 176, 0.02);
  transform: translateY(-1px);
}

.option-v2.selected {
  border-color: var(--color-brand);
  background: rgba(154, 154, 176, 0.03);
  box-shadow: 0 0 0 3px rgba(154, 154, 176, 0.1);
  transform: translateY(-1px);
}

.option-v2.selected .option-icon {
  color: var(--color-brand);
}

.option-v2 .option-text {
  color: var(--color-text-primary);
  font-size: 15px;
  line-height: 1.5;
}

/* ============================================
   骨架屏
   ============================================ */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-bg-primary) 25%,
    var(--color-bg-light) 50%,
    var(--color-bg-primary) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-title {
  width: 60%;
  height: 20px;
  margin-bottom: var(--spacing-md);
}

.skeleton-text {
  width: 100%;
  height: 14px;
  margin-bottom: var(--spacing-sm);
}

.skeleton-text.short {
  width: 80%;
}

.skeleton-card {
  background: var(--color-card-bg);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--spacing-base);
}

/* ============================================
   分类卡片 - 柔和渐变
   ============================================ */
.category-card-v2 {
  background: linear-gradient(135deg, var(--color-brand) 0%, var(--color-accent-blue) 100%);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  color: #FFFFFF;
  text-align: center;
  cursor: pointer;
  transition: var(--transition-base);
  box-shadow: 0 2px 8px rgba(154, 154, 176, 0.15), 0 1px 3px rgba(0, 0, 0, 0.05);
  position: relative;
  overflow: hidden;
}

.category-card-v2::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.3s;
}

.category-card-v2:hover::before {
  opacity: 1;
}

.category-card-v2:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 8px 24px rgba(154, 154, 176, 0.25), 0 4px 8px rgba(0, 0, 0, 0.08);
}

.category-card-v2 .category-icon {
  font-size: 2rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.95;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.category-card-v2 .category-name {
  font-size: 1rem;
  font-weight: 600;
  opacity: 0.95;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
}

/* 不同分类的渐变色 - 更柔和的配色 */
.category-card-v2:nth-child(1) { background: linear-gradient(135deg, rgba(154, 154, 176, 0.85) 0%, rgba(167, 184, 201, 0.85) 100%); }
.category-card-v2:nth-child(2) { background: linear-gradient(135deg, rgba(167, 184, 201, 0.85) 0%, rgba(181, 192, 176, 0.85) 100%); }
.category-card-v2:nth-child(3) { background: linear-gradient(135deg, rgba(181, 192, 176, 0.85) 0%, rgba(154, 154, 176, 0.85) 100%); }
.category-card-v2:nth-child(4) { background: linear-gradient(135deg, rgba(143, 184, 156, 0.85) 0%, rgba(167, 184, 201, 0.85) 100%); }
.category-card-v2:nth-child(5) { background: linear-gradient(135deg, rgba(167, 184, 201, 0.85) 0%, rgba(143, 184, 156, 0.85) 100%); }
.category-card-v2:nth-child(6) { background: linear-gradient(135deg, rgba(212, 165, 116, 0.85) 0%, rgba(181, 192, 176, 0.85) 100%); }
.category-card-v2:nth-child(7) { background: linear-gradient(135deg, rgba(201, 149, 138, 0.85) 0%, rgba(167, 184, 201, 0.85) 100%); }

/* ============================================
   图标容器
   ============================================ */
.icon-wrapper-v2 {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(154, 154, 176, 0.08) 0%, rgba(167, 184, 201, 0.08) 100%);
  color: var(--color-brand);
  font-size: 20px;
}

.icon-wrapper-v2.sm {
  width: 36px;
  height: 36px;
  font-size: 16px;
  border-radius: var(--radius-sm);
}

.icon-wrapper-v2.lg {
  width: 64px;
  height: 64px;
  font-size: 28px;
  border-radius: var(--radius-lg);
}

/* ============================================
   菜单卡片
   ============================================ */
.menu-card-v2 {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--color-card-bg);
  border-radius: var(--radius-xl);
  padding: 16px;
  cursor: pointer;
  transition: var(--transition-base);
  text-decoration: none;
  margin-bottom: var(--spacing-md);
  border: 1px solid var(--color-bg-primary);
}

.menu-card-v2:hover {
  background: var(--color-bg-primary);
  transform: translateX(4px);
}

.menu-card-v2:active {
  transform: translateX(2px) scale(0.99);
}

.menu-icon-v2 {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  font-size: 18px;
  margin-right: 12px;
}

/* ============================================
   底部导航栏
   ============================================ */
.bottom-nav-v2 {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  border-top: 1px solid rgba(232, 232, 237, 0.6);
  box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.03), 0 -1px 2px rgba(154, 154, 176, 0.05);
  padding: 8px 0 calc(8px + env(safe-area-inset-bottom));
  z-index: 1000;
}

.bottom-nav-v2::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(154, 154, 176, 0.1) 50%, transparent 100%);
}

.bottom-nav-v2 .nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: var(--color-text-light);
  font-size: 11px;
  padding: 8px;
  transition: var(--transition-fast);
  position: relative;
}

.bottom-nav-v2 .nav-item::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  width: 56px;
  height: 56px;
  background: rgba(154, 154, 176, 0.08);
  border-radius: 50%;
  transition: var(--transition-base);
  z-index: -1;
}

.bottom-nav-v2 .nav-item.active::before,
.bottom-nav-v2 .nav-item:active::before {
  transform: translate(-50%, -50%) scale(1);
}

.bottom-nav-v2 .nav-item.active {
  color: var(--color-brand);
}

.bottom-nav-v2 .nav-icon {
  font-size: 20px;
  margin-bottom: 4px;
  transition: var(--transition-fast);
}

.bottom-nav-v2 .nav-item.active .nav-icon {
  transform: scale(1.1);
}

/* ============================================
   动画效果
   ============================================ */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.4s ease-out;
}

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

.slide-up {
  animation: slideUp 0.5s ease-out;
}

/* ============================================
   工具类
   ============================================ */
.text-primary { color: var(--color-text-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-light { color: var(--color-text-light); }
.text-brand { color: var(--color-brand); }

.bg-primary { background: var(--color-bg-primary); }
.bg-light { background: var(--color-bg-light); }
.bg-white { background: var(--color-card-bg); }

.rounded-sm { border-radius: var(--radius-sm); }
.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-base { margin-bottom: var(--spacing-base); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.mt-xs { margin-top: var(--spacing-xs); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-base { margin-top: var(--spacing-base); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.p-xs { padding: var(--spacing-xs); }
.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-base { padding: var(--spacing-base); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }

/* ============================================
   响应式适配
   ============================================ */
@media (max-width: 375px) {
  :root {
    --spacing-base: 14px;
    --spacing-lg: 18px;
  }
  
  body {
    font-size: 14px;
  }
  
  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.25rem; }
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-xl);
  }
}

/* ============================================
   深色模式支持（预留）
   ============================================ */
@media (prefers-color-scheme: dark) {
  /* 暂时不启用，保持浅色主题 */
}

/* ============================================
   打印样式
   ============================================ */
@media print {
  .bottom-nav-v2,
  .navbar-v2 {
    display: none;
  }
  
  body {
    background: white;
  }
}