/* 全局变量 */
:root {
  --primary: #4361ee;
  --primary-dark: #3a56d4;
  --secondary: #4cc9f0;
  --accent: #f72585;
  --success: #06d6a0;
  --warning: #ffd166;
  --danger: #ef476f;
  --gray-50: #f8f9fa;
  --gray-100: #f1f3f5;
  --gray-200: #e9ecef;
  --gray-300: #dee2e6;
  --gray-400: #ced4da;
  --gray-500: #adb5bd;
  --gray-600: #6c757d;
  --gray-700: #495057;
  --gray-800: #343a40;
  --gray-900: #212529;
  --white: #ffffff;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --border-radius: 0.375rem;
  --border-radius-lg: 0.5rem;
  --transition: all 0.3s ease;
}

/* 基础重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background-color: var(--gray-100);
  color: var(--gray-800);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* 头部样式 */
header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
  text-align: center;
  padding: 2rem 0;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

header::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 70%);
  pointer-events: none;
}

header h1 {
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

header p {
  font-size: 1.125rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
}

/* 主要内容区域 */
#test-section {
  max-width: 800px;
  margin: 2rem auto;
  background-color: var(--white);
  padding: 2rem;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  position: relative;
}

#test-intro {
  margin-bottom: 2rem;
  padding: 1.5rem;
  background-color: rgba(67, 97, 238, 0.05);
  border-left: 4px solid var(--primary);
  border-radius: var(--border-radius);
}

/* 问题卡片样式 */
.question {
  margin-bottom: 1.5rem;
  padding: 1.5rem;
  border: 1px solid var(--gray-300);
  border-radius: var(--border-radius-lg);
  background-color: var(--gray-50);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.question::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

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

.question:hover::after {
  transform: scaleX(1);
}

.question-text {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  color: var(--gray-800);
  line-height: 1.4;
}

/* 选项样式 */
.answer-options {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.answer-options label {
  display: flex;
  align-items: center;
  padding: 1rem 1.25rem;
  border: 1px solid var(--gray-300);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
  background-color: var(--white);
  position: relative;
  overflow: hidden;
}

.answer-options label:hover {
  background-color: var(--gray-100);
  border-color: var(--primary);
  transform: translateX(4px);
}

.answer-options input[type="radio"] {
  margin-right: 0.75rem;
}

/* 选中样式 */
.answer-options label.selected {
  background: linear-gradient(90deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
  border-color: var(--primary-dark);
  font-weight: 500;
  box-shadow: var(--shadow-sm);
  transform: translateX(4px);
}

.answer-options label.selected::after {
  content: "✓";
  display: flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  right: 1rem;
  width: 24px;
  height: 24px;
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  font-size: 0.875rem;
}

/* 按钮样式 */
.button-container {
  display: flex;
  justify-content: space-between;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--gray-200);
}

#prev-btn {
  padding: 0.875rem 1.75rem;
  background-color: var(--gray-200);
  color: var(--gray-700);
  border: none;
  border-radius: 2rem;
  cursor: pointer;
  font-weight: 500;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
}

#prev-btn:hover {
  background-color: var(--gray-300);
  transform: translateY(-2px);
}

#submit-btn {
  padding: 0.875rem 1.75rem;
  background: linear-gradient(90deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
  border: none;
  border-radius: 2rem;
  cursor: pointer;
  font-weight: 500;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

#submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* 完成消息 */
.completion-message {
  text-align: center;
  padding: 2.5rem 2rem;
  background: linear-gradient(135deg, rgba(6, 214, 160, 0.1) 0%, rgba(76, 201, 240, 0.1) 100%);
  border-radius: var(--border-radius-lg);
  margin: 2rem 0;
  border: 1px solid var(--success);
  box-shadow: var(--shadow-sm);
  animation: fadeIn 0.5s ease;
}

.completion-message img {
  border-radius: 50%;
  box-shadow: var(--shadow);
  margin: 1.5rem auto;
  border: 4px solid var(--white);
}

/* 结果部分 */
#result-section {
  max-width: 800px;
  margin: 2.5rem auto;
  padding: 2.5rem;
  background-color: var(--white);
  box-shadow: var(--shadow-lg);
  border-radius: var(--border-radius-lg);
  animation: fadeIn 0.5s ease;
}

#result-section h2 {
  text-align: center;
  color: var(--gray-800);
  margin-bottom: 2rem;
  font-size: 1.75rem;
  font-weight: 700;
  position: relative;
  padding-bottom: 1rem;
}

#result-section h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: 2px;
}

#result {
  max-width: 600px;
  margin: 0 auto;
  padding: 1.5rem;
}

#result p {
  margin: 1rem 0;
  font-size: 1.125rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--gray-200);
}

#result p:last-child {
  border-bottom: none;
}

#result strong {
  color: var(--primary);
  font-weight: 600;
}

#result h3 {
  margin-top: 2rem;
  color: var(--gray-800);
  font-size: 1.5rem;
  position: relative;
  padding-bottom: 0.75rem;
  margin-bottom: 1.5rem;
}

#result h3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: 1.5px;
}

/* 维度得分列表 */
#dimension-scores {
  list-style-type: none;
  padding: 0;
  margin: 1.5rem 0;
}

#dimension-scores li {
  margin: 0.75rem 0;
  padding: 1rem 1.25rem;
  background-color: var(--gray-50);
  border-radius: var(--border-radius);
  font-size: 1rem;
  color: var(--gray-700);
  display: flex;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

#dimension-scores li:hover {
  transform: translateX(4px);
  background-color: var(--gray-100);
}

/* 返回按钮 */
#return-btn {
  display: block;
  margin: 2rem auto;
  padding: 0.875rem 2rem;
  background: linear-gradient(90deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
  border: none;
  border-radius: 2rem;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

#return-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* 抑郁程度颜色 */
#depression-level.light {
  color: var(--success);
  font-weight: 600;
}

#depression-level.moderate {
  color: var(--warning);
  font-weight: 600;
}

#depression-level.severe {
  color: var(--danger);
  font-weight: 600;
}

/* 抑郁信息部分 */
#depression-info {
  margin-top: 2.5rem;
  padding: 2rem;
  background-color: var(--gray-50);
  border: 1px solid var(--gray-300);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

#depression-info h3 {
  margin-top: 0;
  color: var(--gray-800);
  font-size: 1.5rem;
  font-weight: 600;
  position: relative;
  padding-bottom: 0.75rem;
  margin-bottom: 1.5rem;
}

#depression-info h3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: 1.5px;
}

#depression-info p {
  margin: 1rem 0;
  font-size: 1.0625rem;
  color: var(--gray-700);
  line-height: 1.7;
}

#depression-info ul {
  margin: 1.5rem 0;
  padding-left: 1rem;
}

#depression-info li {
  margin: 0.75rem 0;
  font-size: 1.0625rem;
  color: var(--gray-700);
  line-height: 1.7;
  position: relative;
  padding-left: 1.5rem;
}

#depression-info li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--primary);
  font-size: 1.5rem;
  line-height: 1;
}

/* 页脚 */
footer {
  text-align: center;
  padding: 2rem 0;
  background-color: var(--gray-800);
  color: var(--gray-300);
  margin-top: auto;
}

footer p {
  margin: 0.5rem 0;
  font-size: 0.9375rem;
}

footer a {
  color: var(--secondary);
  text-decoration: none;
  transition: var(--transition);
}

footer a:hover {
  color: var(--white);
  text-decoration: underline;
}

/* 图片样式 */
img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 1rem auto;
  border-radius: var(--border-radius);
  transition: var(--transition);
}

img:hover {
  transform: scale(1.02);
}

/* 响应式设计 */
@media (max-width: 768px) {
  #test-section, #result-section {
    padding: 1.5rem;
    margin: 1rem;
  }

  .question {
    padding: 1.25rem;
  }

  .button-container {
    flex-direction: column;
    gap: 1rem;
  }

  #prev-btn, #submit-btn {
    width: 100%;
  }

  header h1 {
    font-size: 1.75rem;
  }

  .question-text {
    font-size: 1.125rem;
  }
}

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

.question {
  animation: fadeIn 0.4s ease;
}

/* 自定义滚动条 */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
  background: var(--gray-400);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gray-500);
}
#depression-info ul li::marker {
    content: ""; /* 清空内容，移除默认黑点 */
}

#depression-info li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: #007BFF;
    font-size: 1.2em;
}

.current-time {
  font-size: 0.95rem;
  margin-top: 0.75rem;
  background-color: rgba(255, 255, 255, 0.15);
  display: inline-block;
  padding: 0.4rem 1rem;
  border-radius: 2rem;
  backdrop-filter: blur(4px);
}

.current-time span {
  font-weight: 500;
}