/* 华夏文明 - 学习增强模块样式 */

/* 学习工具栏 */
.learning-toolbar {
  display: flex;
  gap: 6px;
  align-items: center;
  margin-left: 8px;
  padding-left: 8px;
  border-left: 1px solid rgba(139, 115, 85, 0.3);
}

.learning-btn {
  font-size: 12px;
  padding: 4px 10px;
  white-space: nowrap;
}

.learning-btn:hover {
  background: rgba(139, 115, 85, 0.15);
}

/* Toast 提示 */
.learning-toast {
  position: fixed;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: rgba(60, 45, 30, 0.92);
  color: #f3eee4;
  padding: 10px 24px;
  border-radius: 8px;
  font-size: 14px;
  z-index: 10000;
  opacity: 0;
  transition: all 0.3s ease;
  pointer-events: none;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  max-width: 80vw;
  text-align: center;
}

.learning-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* 通用面板 */
.learning-panel {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #faf6ee;
  border: 1px solid #c9b896;
  border-radius: 12px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.25);
  z-index: 9999;
  width: 480px;
  max-width: 92vw;
  max-height: 80vh;
  overflow-y: auto;
  font-family: 'Noto Serif SC', serif;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  border-bottom: 1px solid #e0d5c0;
  font-size: 16px;
  font-weight: 600;
  color: #4a3728;
  background: linear-gradient(135deg, #f5ede0, #ede0cc);
  border-radius: 12px 12px 0 0;
}

.panel-close {
  background: none;
  border: none;
  font-size: 16px;
  cursor: pointer;
  color: #8b7355;
  padding: 2px 8px;
  border-radius: 4px;
}

.panel-close:hover {
  background: rgba(139, 115, 85, 0.15);
}

.panel-body {
  padding: 20px;
}

/* 统计行 */
.stat-row {
  display: flex;
  justify-content: space-around;
  margin-bottom: 20px;
}

.stat-item {
  text-align: center;
}

.stat-num {
  font-size: 28px;
  font-weight: 700;
  color: #8b4513;
}

.stat-label {
  font-size: 12px;
  color: #8b7355;
  margin-top: 4px;
}

/* 进度条 */
.progress-bar-wrap {
  margin-bottom: 16px;
}

.progress-bar-label {
  font-size: 13px;
  color: #6b5344;
  margin-bottom: 6px;
}

.progress-bar-bg {
  height: 8px;
  background: #e8dcc8;
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #c9a96e, #8b6914);
  border-radius: 4px;
  transition: width 0.5s ease;
}

/* 朝代标签 */
.dynasty-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.dynasty-tag {
  background: #ede0cc;
  color: #6b5344;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 12px;
  border: 1px solid #d4c4a8;
}

.empty-hint {
  text-align: center;
  color: #a09080;
  font-size: 13px;
  padding: 20px 0;
}

.reset-btn {
  display: block;
  margin: 0 auto;
  background: none;
  border: 1px solid #d4c4a8;
  color: #8b7355;
  padding: 6px 16px;
  border-radius: 6px;
  font-size: 12px;
  cursor: pointer;
}

.reset-btn:hover {
  background: rgba(139, 115, 85, 0.1);
}

/* 快捷键表格 */
.shortcut-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.shortcut-table td {
  padding: 8px 0;
  border-bottom: 1px solid #f0e8d8;
}

.shortcut-keys {
  font-family: 'Courier New', monospace;
  background: #ede0cc;
  padding: 2px 8px;
  border-radius: 4px;
  color: #6b4423;
  white-space: nowrap;
  font-size: 12px;
  width: 140px;
}

.shortcut-desc {
  padding-left: 12px;
  color: #5a4a3a;
}

.help-tip {
  margin-top: 16px;
  padding: 10px 14px;
  background: #f5ede0;
  border-radius: 6px;
  font-size: 12px;
  color: #8b7355;
  line-height: 1.6;
}

/* 导览遮罩 */
.tour-overlay {
  position: fixed;
  inset: 0;
  background: rgba(30, 20, 10, 0.7);
  z-index: 10001;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}

.tour-card {
  background: #faf6ee;
  border-radius: 16px;
  padding: 32px;
  width: 520px;
  max-width: 92vw;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
  font-family: 'Noto Serif SC', serif;
}

.tour-card h2 {
  font-size: 24px;
  color: #4a3728;
  margin: 0 0 8px;
}

.tour-card > p {
  color: #8b7355;
  font-size: 14px;
  margin: 0 0 24px;
  line-height: 1.6;
}

.tour-features {
  text-align: left;
  margin-bottom: 28px;
}

.tour-feature {
  display: flex;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid #f0e8d8;
}

.tour-feature:last-child {
  border-bottom: none;
}

.tour-icon {
  font-size: 28px;
  flex-shrink: 0;
  width: 40px;
  text-align: center;
}

.tour-feature b {
  color: #6b4423;
  font-size: 14px;
}

.tour-feature p {
  margin: 4px 0 0;
  font-size: 12px;
  color: #8b7355;
  line-height: 1.5;
}

.tour-start-btn {
  background: linear-gradient(135deg, #8b6914, #6b4423);
  color: #f3eee4;
  border: none;
  padding: 12px 40px;
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.tour-start-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(107, 68, 35, 0.4);
}

/* 移动端适配 */
@media (max-width: 768px) {
  .learning-toolbar {
    margin-left: 4px;
    padding-left: 4px;
  }
  .learning-btn {
    font-size: 11px;
    padding: 4px 6px;
  }
  .learning-btn span {
    display: none;
  }
  .learning-btn::after {
    content: attr(title);
    font-size: 11px;
  }
  .learning-panel {
    width: 94vw;
  }
  .shortcut-keys {
    width: 100px;
    font-size: 11px;
  }
}