/* ========== 全局重置 ========== */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --primary: #4F46E5;
  --primary-light: #818CF8;
  --primary-bg: #EEF2FF;
  --success: #10B981;
  --warning: #F59E0B;
  --danger: #EF4444;
  --green: #10B981;
  --yellow: #F59E0B;
  --red: #EF4444;
  --gray-50: #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-300: #D1D5DB;
  --gray-500: #6B7280;
  --gray-700: #374151;
  --gray-900: #111827;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
}
body {
  font-family: 'Microsoft YaHei', 'Segoe UI', sans-serif;
  background: var(--gray-50);
  color: var(--gray-900);
  font-size: 14px;
}
a { color: var(--primary); text-decoration: none; }
.hidden { display: none !important; }

/* ========== 布局 ========== */
.app-container { display: flex; min-height: 100vh; }
.sidebar {
  width: 240px;
  background: linear-gradient(180deg, #4F46E5 0%, #4338CA 100%);
  color: #fff;
  padding: 0;
  flex-shrink: 0;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  overflow-y: auto;
}
.sidebar-logo {
  padding: 24px 20px;
  font-size: 16px;
  font-weight: 700;
  border-bottom: 1px solid rgba(255,255,255,0.15);
  display: flex; align-items: center; gap: 10px;
}
.sidebar-logo .logo-icon { font-size: 24px; }
.sidebar-menu { list-style: none; padding: 12px 0; }
.sidebar-menu li a {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 20px;
  color: rgba(255,255,255,0.8);
  transition: all 0.2s;
  font-size: 14px;
}
.sidebar-menu li a:hover, .sidebar-menu li a.active {
  background: rgba(255,255,255,0.15);
  color: #fff;
}
.sidebar-menu li a .icon { font-size: 18px; width: 24px; text-align: center; }
.main-content {
  flex: 1;
  margin-left: 240px;
  padding: 24px 32px;
  min-height: 100vh;
}
.top-bar {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 24px;
}
.top-bar h1 { font-size: 22px; font-weight: 600; }
.top-bar .user-info { display: flex; align-items: center; gap: 16px; }
.top-bar .user-info span { color: var(--gray-500); }

/* ========== 卡片 ========== */
.card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  margin-bottom: 20px;
}
.card-title {
  font-size: 16px; font-weight: 600; margin-bottom: 16px;
  display: flex; justify-content: space-between; align-items: center;
}

/* ========== 表单 ========== */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 6px; font-weight: 500; color: var(--gray-700); }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 10px 14px;
  border: 1px solid var(--gray-300); border-radius: 8px;
  font-size: 14px; transition: border 0.2s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-bg);
}
.form-row { display: flex; gap: 16px; }
.form-row .form-group { flex: 1; }

/* ========== 按钮 ========== */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 20px; border: none; border-radius: 8px;
  font-size: 14px; cursor: pointer; transition: all 0.2s;
  font-family: inherit;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: #4338CA; }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #059669; }
.btn-outline { background: #fff; color: var(--gray-700); border: 1px solid var(--gray-300); }
.btn-outline:hover { background: var(--gray-50); border-color: var(--primary); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #DC2626; }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-lg { padding: 12px 28px; font-size: 15px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ========== 表格 ========== */
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--gray-200); }
.table th { font-weight: 600; color: var(--gray-500); font-size: 13px; text-transform: uppercase; }
.table tbody tr:hover { background: var(--gray-50); }

/* ========== 标签/徽章 ========== */
.badge {
  display: inline-block; padding: 3px 10px;
  border-radius: 20px; font-size: 12px; font-weight: 500;
}
.badge-success { background: #D1FAE5; color: #065F46; }
.badge-warning { background: #FEF3C7; color: #92400E; }
.badge-danger { background: #FEE2E2; color: #991B1B; }
.badge-info { background: var(--primary-bg); color: var(--primary); }
.badge-gray { background: var(--gray-100); color: var(--gray-500); }

/* ========== 进度条 ========== */
.progress-bar {
  width: 100%; height: 8px; background: var(--gray-200);
  border-radius: 4px; overflow: hidden;
}
.progress-bar .fill {
  height: 100%; border-radius: 4px;
  transition: width 0.3s ease;
}
.progress-bar .fill.green { background: var(--success); }
.progress-bar .fill.yellow { background: var(--warning); }
.progress-bar .fill.red { background: var(--danger); }

/* ========== 统计卡片 ========== */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 20px; margin-bottom: 24px; }
.stat-card {
  background: #fff; border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 20px;
}
.stat-card .stat-label { color: var(--gray-500); font-size: 13px; margin-bottom: 8px; }
.stat-card .stat-value { font-size: 28px; font-weight: 700; }
.stat-card .stat-value.green { color: var(--success); }
.stat-card .stat-value.yellow { color: var(--warning); }
.stat-card .stat-value.red { color: var(--danger); }
.stat-card .stat-icon { float: right; font-size: 32px; opacity: 0.2; }

/* ========== 模态框 ========== */
.modal-overlay {
  position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.5); z-index: 200;
  display: flex; align-items: center; justify-content: center;
}
.modal {
  background: #fff; border-radius: 16px;
  width: 500px; max-width: 90vw; max-height: 85vh;
  overflow-y: auto; box-shadow: var(--shadow-lg);
}
.modal-header {
  padding: 20px 24px; border-bottom: 1px solid var(--gray-200);
  display: flex; justify-content: space-between; align-items: center;
}
.modal-header h3 { font-size: 18px; }
.modal-header .close { font-size: 24px; cursor: pointer; color: var(--gray-500); }
.modal-body { padding: 24px; }
.modal-footer { padding: 16px 24px; border-top: 1px solid var(--gray-200); text-align: right; }

/* ========== 登录页 ========== */
.login-page {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #4F46E5 0%, #7C3AED 100%);
}
.login-box {
  background: #fff; border-radius: 20px;
  padding: 40px; width: 400px; max-width: 90vw;
  box-shadow: var(--shadow-lg);
}
.login-box h2 { text-align: center; margin-bottom: 8px; font-size: 22px; }
.login-box .subtitle { text-align: center; color: var(--gray-500); margin-bottom: 32px; }
.login-box .demo-hint {
  background: var(--primary-bg); border-radius: 8px; padding: 12px;
  font-size: 13px; color: var(--gray-700); margin-top: 16px;
}

/* ========== 题目卡片 ========== */
.question-card {
  background: #fff; border: 1px solid var(--gray-200);
  border-radius: 12px; padding: 20px; margin-bottom: 16px;
}
.question-card .q-type { font-size: 12px; color: var(--gray-500); margin-bottom: 8px; }
.question-card .q-content { font-size: 16px; font-weight: 500; margin-bottom: 16px; line-height: 1.6; }
.question-card .q-options { list-style: none; }
.question-card .q-options li {
  padding: 10px 16px; border: 1px solid var(--gray-200);
  border-radius: 8px; margin-bottom: 8px; cursor: pointer;
  transition: all 0.2s;
}
.question-card .q-options li:hover { background: var(--primary-bg); border-color: var(--primary); }
.question-card .q-options li.selected { background: var(--primary); color: #fff; border-color: var(--primary); }
.question-card .q-options li.correct { background: #D1FAE5; border-color: var(--success); color: #065F46; }
.question-card .q-options li.wrong { background: #FEE2E2; border-color: var(--danger); color: #991B1B; }
.question-card .q-answer-area { width: 100%; min-height: 120px; padding: 12px; border: 1px solid var(--gray-300); border-radius: 8px; font-size: 14px; resize: vertical; }
.question-card .q-explanation {
  margin-top: 12px; padding: 12px; background: var(--gray-50);
  border-radius: 8px; font-size: 13px; color: var(--gray-700);
  border-left: 3px solid var(--primary);
}

/* ========== 结果报告 ========== */
.report-header {
  text-align: center; padding: 32px; background: #fff;
  border-radius: var(--radius); box-shadow: var(--shadow); margin-bottom: 20px;
}
.report-score {
  font-size: 48px; font-weight: 700; margin: 12px 0;
}
.report-level { font-size: 18px; }
.weak-point-list { list-style: none; }
.weak-point-list li {
  padding: 12px 16px; background: var(--gray-50);
  border-radius: 8px; margin-bottom: 8px;
  display: flex; justify-content: space-between; align-items: center;
}

/* ========== 复习计划 ========== */
.plan-item {
  display: flex; gap: 16px; padding: 16px;
  background: var(--gray-50); border-radius: 8px; margin-bottom: 8px;
  align-items: center;
}
.plan-item .plan-order {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; flex-shrink: 0;
}

/* ========== 空状态 ========== */
.empty-state {
  text-align: center; padding: 60px 20px; color: var(--gray-500);
}
.empty-state .icon { font-size: 48px; margin-bottom: 16px; }

/* ========== 响应式 ========== */
@media (max-width: 768px) {
  .sidebar { width: 60px; }
  .sidebar-logo { font-size: 0; }
  .sidebar-logo .logo-icon { font-size: 20px; }
  .sidebar-menu li a span:not(.icon) { display: none; }
  .main-content { margin-left: 60px; padding: 16px; }
  .form-row { flex-direction: column; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
}

/* ========== 移动端 (<768px) 全面适配 ========== */
@media (max-width: 768px) {
  /* 移动端导航抽屉 */
  .sidebar {
    width: 240px;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: 300;
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar-logo { font-size: 16px; }
  .sidebar-menu li a span:not(.icon) { display: inline; }

  /* 遮罩层 */
  .sidebar-overlay {
    position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.4); z-index: 250;
    display: none;
  }
  .sidebar-overlay.show { display: block; }

  /* 汉堡菜单按钮 */
  .menu-toggle {
    display: flex !important;
    align-items: center; justify-content: center;
    width: 40px; height: 40px;
    background: var(--primary); color: #fff;
    border: none; border-radius: 8px;
    font-size: 20px; cursor: pointer;
    flex-shrink: 0;
  }

  /* 主内容区 */
  .main-content {
    margin-left: 0;
    padding: 12px;
  }

  /* 顶部栏 */
  .top-bar {
    flex-wrap: wrap; gap: 8px;
  }
  .top-bar h1 { font-size: 18px; }
  .top-bar .user-info { font-size: 13px; }

  /* 统计卡片 - 2列 */
  .stat-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 16px;
  }
  .stat-card { padding: 14px; }
  .stat-card .stat-value { font-size: 22px; }
  .stat-card .stat-label { font-size: 12px; }

  /* 卡片 */
  .card { padding: 16px; margin-bottom: 16px; }
  .card-title { font-size: 15px; }

  /* 表格 - 横向滚动 */
  .table-container { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .table { min-width: 600px; }
  .table th, .table td { padding: 8px 10px; font-size: 13px; }

  /* 模态框 - 全屏 */
  .modal {
    width: 100vw; max-width: 100vw; max-height: 100vh;
    border-radius: 0;
  }

  /* 登录页 */
  .login-box { padding: 28px 20px; width: 100%; max-width: 380px; }
  .login-box h2 { font-size: 20px; }

  /* 表单 */
  .form-row { flex-direction: column; gap: 0; }
  .form-group input, .form-group select, .form-group textarea { font-size: 16px; }

  /* 按钮 - 更大的点击区域 */
  .btn { padding: 12px 20px; font-size: 14px; }
  .btn-sm { padding: 8px 14px; }

  /* 题目卡片 */
  .question-card { padding: 16px; }
  .question-card .q-content { font-size: 15px; }
  .question-card .q-options li { padding: 12px 14px; font-size: 14px; }

  /* 报告 */
  .report-header { padding: 20px 16px; }
  .report-score { font-size: 36px; }
  .report-level { font-size: 16px; }

  /* 复习计划 */
  .plan-item { padding: 12px; gap: 10px; }
  .plan-item .plan-order { width: 32px; height: 32px; font-size: 14px; }

  /* 相机模态框 */
  .camera-modal { width: 100vw; max-width: 100vw; border-radius: 0; padding: 16px; }

  /* 答题工具栏 */
  .answer-toolbar { gap: 6px; }
  .voice-btn, .camera-btn, .upload-btn { padding: 8px 12px; font-size: 12px; }
}

/* ========== 手机端 (<480px) 细优化 ========== */
@media (max-width: 480px) {
  .stat-grid { grid-template-columns: 1fr; gap: 10px; }
  .stat-card { padding: 12px; }
  .stat-card .stat-value { font-size: 24px; }
  .top-bar h1 { font-size: 16px; }
  .top-bar .user-info { gap: 8px; font-size: 12px; }
  .login-box { padding: 24px 16px; }
  .login-box h2 { font-size: 18px; }
  .question-card { padding: 12px; }
  .question-card .q-content { font-size: 14px; line-height: 1.5; }
  .report-score { font-size: 32px; }
  .modal-body { padding: 16px; }
  .modal-header { padding: 14px 16px; }
  .modal-header h3 { font-size: 16px; }
}

/* ========== 移动端导航 - 底部Tab栏 ========== */
.mobile-tabbar {
  display: none;
  position: fixed; bottom: 0; left: 0; right: 0;
  background: #fff; box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
  z-index: 200;
  padding: 0;
  margin: 0;
}
.mobile-tabbar a {
  flex: 1;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 8px 4px;
  color: var(--gray-500); font-size: 11px;
  text-decoration: none;
  border-top: 3px solid transparent;
  transition: all 0.2s;
}
.mobile-tabbar a .tab-icon { font-size: 20px; margin-bottom: 2px; }
.mobile-tabbar a.active {
  color: var(--primary); border-top-color: var(--primary);
}
@media (max-width: 768px) {
  .mobile-tabbar { display: flex; }
  .main-content { padding-bottom: 70px; }
}

/* ========== 移动端工具栏 ========== */
.menu-toggle { display: none; }

/* ========== 学生端角色标签 ========== */
.role-badge {
  display: inline-block; padding: 2px 8px;
  border-radius: 12px; font-size: 11px; font-weight: 500;
}
.role-badge.parent { background: #EEF2FF; color: var(--primary); }
.role-badge.student { background: #D1FAE5; color: var(--success); }

/* ========== 登录页切换标签 ========== */
.login-tabs {
  display: flex; gap: 0; margin-bottom: 24px;
  background: var(--gray-100); border-radius: 10px; padding: 4px;
}
.login-tab {
  flex: 1; padding: 10px; text-align: center;
  border: none; background: transparent;
  color: var(--gray-500); font-size: 14px; font-weight: 500;
  border-radius: 8px; cursor: pointer; transition: all 0.2s;
}
.login-tab.active {
  background: #fff; color: var(--primary);
  box-shadow: var(--shadow);
}

/* ========== 语音问答 ========== */
.voice-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border: 2px solid var(--primary);
  border-radius: 30px; background: #fff; color: var(--primary);
  cursor: pointer; font-size: 13px; transition: all 0.2s;
}
.voice-btn:hover { background: var(--primary-bg); }
.voice-btn.recording {
  background: var(--danger); color: #fff; border-color: var(--danger);
  animation: pulse 1.5s infinite;
}
@keyframes pulse {
  0%,100% { box-shadow: 0 0 0 0 rgba(239,68,68,0.4); }
  50% { box-shadow: 0 0 0 8px rgba(239,68,68,0); }
}
.voice-status {
  margin-top: 8px; font-size: 13px; color: var(--gray-500);
  display: flex; align-items: center; gap: 6px;
}
.voice-transcript {
  margin-top: 8px; padding: 12px; background: var(--primary-bg);
  border-radius: 8px; font-size: 14px; color: var(--gray-700);
  border: 1px solid var(--primary-light);
}

/* ========== 拍照/手写识别 ========== */
.camera-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border: 2px solid var(--success);
  border-radius: 30px; background: #fff; color: var(--success);
  cursor: pointer; font-size: 13px; transition: all 0.2s;
}
.camera-btn:hover { background: #D1FAE5; }
.camera-modal-overlay {
  position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.7); z-index: 300;
  display: flex; align-items: center; justify-content: center;
}
.camera-modal {
  background: #fff; border-radius: 16px; padding: 24px;
  width: 600px; max-width: 90vw;
}
.camera-preview {
  width: 100%; border-radius: 12px; background: #000;
  aspect-ratio: 4/3; object-fit: cover;
}
.camera-canvas { display: none; }
.photo-preview {
  width: 100%; border-radius: 12px; border: 2px solid var(--gray-200);
}
.ocr-result {
  margin-top: 12px; padding: 16px; background: #F0FDF4;
  border-radius: 8px; border: 1px solid #BBF7D0;
}
.ocr-result .label { font-size: 12px; color: var(--gray-500); margin-bottom: 4px; }
.ocr-result .text { font-size: 15px; color: var(--gray-900); line-height: 1.6; }
.ocr-loading {
  display: inline-block; width: 20px; height: 20px;
  border: 2px solid var(--gray-200); border-top-color: var(--primary);
  border-radius: 50%; animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.answer-toolbar {
  display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 8px;
}
.upload-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border: 2px dashed var(--gray-300);
  border-radius: 8px; background: var(--gray-50); color: var(--gray-500);
  cursor: pointer; font-size: 13px; transition: all 0.2s;
}
.upload-btn:hover { border-color: var(--primary); color: var(--primary); }
.image-preview-thumb {
  width: 80px; height: 80px; object-fit: cover;
  border-radius: 8px; border: 2px solid var(--gray-200);
  cursor: pointer; margin-top: 8px;
}

/* ========== 预习/复习页面 ========== */
.chapter-group {
  margin-bottom: 24px;
}
.chapter-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--gray-700);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--primary-bg);
}
.kp-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 12px;
}
.kp-item {
  padding: 16px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.2s;
  background: #fff;
}
.kp-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}
.kp-item .kp-name {
  font-weight: 600;
  font-size: 15px;
  margin-bottom: 6px;
  color: var(--gray-900);
}
.kp-item .kp-desc {
  font-size: 13px;
  color: var(--gray-500);
  line-height: 1.5;
}
.preview-header,
.review-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}
.preview-header h2,
.review-header h2 {
  font-size: 20px;
  font-weight: 700;
}
.preview-header .badge,
.review-header .badge {
  font-size: 13px;
}
.review-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}
.review-stat-card {
  text-align: center;
  padding: 16px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--gray-200);
}
.review-stat-card .stat-icon { font-size: 24px; }
.review-stat-card .stat-num { font-size: 24px; font-weight: 700; margin: 4px 0; }
.review-stat-card .stat-label { font-size: 12px; color: var(--gray-500); }
.review-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.review-table th {
  text-align: left;
  padding: 8px 12px;
  background: var(--gray-100);
  color: var(--gray-500);
  font-weight: 600;
  border-bottom: 1px solid var(--gray-200);
}
.review-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--gray-100);
}
.review-table tr:hover td {
  background: var(--primary-bg);
}
.status-mastered { color: var(--success); font-weight: 600; }
.status-practicing { color: var(--warning); font-weight: 600; }
.status-unmastered { color: var(--gray-500); }
@media (max-width: 768px) {
  .kp-list { grid-template-columns: 1fr; }
  .review-stats { grid-template-columns: repeat(2, 1fr); }
  .review-table { font-size: 12px; }
  .review-table th, .review-table td { padding: 6px 8px; }
}

/* ========== 拍照答疑样式 ========== */
.photo-qa-guide {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px;
  background: var(--primary-bg);
  border-radius: var(--radius);
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.photo-step {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--gray-700);
}
.photo-step .step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  font-size: 12px;
  font-weight: 600;
}
.photo-arrow {
  color: var(--gray-300);
  font-size: 18px;
}
.photo-upload-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.photo-upload-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 400px;
  min-height: 200px;
  border: 2px dashed var(--gray-300);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
  background: var(--gray-50);
}
.photo-upload-box:hover {
  border-color: var(--primary);
  background: var(--primary-bg);
}
.photo-camera-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  background: var(--primary);
  color: white;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 14px;
  transition: all 0.2s;
}
.photo-camera-btn:hover {
  background: var(--primary-light);
}
.photo-preview-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin: 16px 0;
}
.photo-preview-img {
  max-width: 100%;
  max-height: 400px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}
.photo-detail-img {
  max-width: 100%;
  border-radius: var(--radius);
  margin-bottom: 16px;
}
.photo-history-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.photo-history-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.2s;
}
.photo-history-item:hover {
  border-color: var(--primary);
  background: var(--primary-bg);
}
.photo-thumb {
  width: 60px;
  height: 60px;
  object-fit: cover;
  border-radius: 8px;
  flex-shrink: 0;
}
.photo-thumb-placeholder {
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-100);
  border-radius: 8px;
  font-size: 24px;
  flex-shrink: 0;
}
.photo-info {
  flex: 1;
  min-width: 0;
}
.analysis-section {
  margin-bottom: 20px;
  padding: 16px;
  background: var(--gray-50);
  border-radius: var(--radius);
}
.analysis-section h4 {
  margin-bottom: 8px;
  font-size: 15px;
  color: var(--gray-700);
}
.analysis-section p {
  line-height: 1.8;
  color: var(--gray-700);
}
.analysis-weakness {
  background: #FEF3C7;
  border: 1px solid #FDE68A;
}
.analysis-weakness h4 {
  color: #92400E;
}
@media (max-width: 768px) {
  .photo-qa-guide { font-size: 11px; gap: 4px; }
  .photo-step { font-size: 11px; }
  .photo-upload-box { min-height: 160px; }
  .photo-thumb { width: 48px; height: 48px; }
  .photo-thumb-placeholder { width: 48px; height: 48px; }
}