/* ========== 交互工具样式模板 ========== */

/* 工具容器 */
.it-tool {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin: 20px 0;
  box-shadow: var(--shadow-sm);
}

.it-tool-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--primary-dark);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-light);
}

/* 控制栏 */
.it-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
  align-items: center;
}

.it-btn {
  padding: 6px 14px;
  border: 1px solid var(--border);
  background: var(--bg-main);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 13px;
  transition: all 0.2s;
}

.it-btn:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.it-btn.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.it-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.it-input {
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  width: 120px;
}

.it-select {
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  background: white;
}

/* 画布区域 */
.it-canvas {
  background: var(--bg-main);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 12px;
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: auto;
}

.it-canvas svg {
  max-width: 100%;
  height: auto;
}

/* 说明区域 */
.it-explanation {
  background: var(--info-bg);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.it-explanation strong {
  color: var(--primary-dark);
}

/* 图例 */
.it-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 12px;
  font-size: 12px;
  color: var(--text-secondary);
}

.it-legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.it-legend-color {
  width: 14px;
  height: 14px;
  border-radius: 3px;
  border: 1px solid var(--border);
}

/* 步骤指示器 */
.it-steps {
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
}

.it-step {
  flex: 1;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  transition: background 0.3s;
}

.it-step.active { background: var(--primary); }
.it-step.done { background: var(--success-border); }

/* ========== SQL练习场 ========== */
.sql-playground {
  margin: 20px 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.sql-editor {
  background: #2d2d2d;
  padding: 12px 16px;
}

.sql-editor textarea {
  width: 100%;
  min-height: 100px;
  background: transparent;
  border: none;
  color: #e0e0e0;
  font-family: "Consolas", monospace;
  font-size: 13px;
  resize: vertical;
  outline: none;
}

.sql-toolbar {
  background: #3a3a3a;
  padding: 8px 16px;
  display: flex;
  gap: 8px;
  align-items: center;
}

.sql-run-btn {
  background: var(--primary);
  color: white;
  border: none;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 12px;
}

.sql-result {
  padding: 12px 16px;
  max-height: 300px;
  overflow: auto;
}

.sql-result table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.sql-result th {
  background: var(--bg-sidebar);
  padding: 6px 10px;
  text-align: left;
  font-weight: 600;
}

.sql-result td {
  padding: 6px 10px;
  border-bottom: 1px solid var(--border-light);
}

.sql-error {
  color: var(--danger-border);
  font-size: 13px;
  padding: 8px 0;
}

/* 嵌入式SQL练习 */
.sql-playground-embed {
  margin: 16px 0;
}

/* ========== 闯关模式 ========== */
.challenge-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.challenge-level {
  font-size: 18px;
  font-weight: 600;
  color: var(--primary-dark);
}

.challenge-score {
  font-size: 14px;
  color: var(--text-secondary);
}

.challenge-desc {
  background: var(--warning-bg);
  border-left: 4px solid var(--warning-border);
  padding: 12px 16px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 16px;
  font-size: 14px;
}

.challenge-hint {
  margin-top: 12px;
  padding: 10px 14px;
  background: var(--info-bg);
  border-radius: var(--radius-sm);
  font-size: 13px;
  display: none;
}

.challenge-hint.show { display: block; }

.challenge-buttons {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

/* ========== 游戏化 - 成就通知 ========== */
.achievement-popup {
  position: fixed;
  top: 20px;
  right: 20px;
  background: var(--bg-card);
  border: 2px solid var(--warning-border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  animation: slideIn 0.3s ease-out;
  display: flex;
  align-items: center;
  gap: 12px;
}

.achievement-popup .icon {
  font-size: 32px;
}

.achievement-popup .title {
  font-weight: 600;
  color: var(--primary-dark);
}

.achievement-popup .desc {
  font-size: 12px;
  color: var(--text-secondary);
}

@keyframes slideIn {
  from { transform: translateX(120%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* ========== 速查卡 ========== */
.flashcard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
  margin: 16px 0;
}

.flashcard {
  perspective: 1000px;
  height: 120px;
  cursor: pointer;
}

.flashcard-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.5s;
  transform-style: preserve-3d;
}

.flashcard.flipped .flashcard-inner {
  transform: rotateY(180deg);
}

.flashcard-front, .flashcard-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: var(--radius-md);
  padding: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 14px;
}

.flashcard-front {
  background: var(--primary);
  color: white;
  font-weight: 600;
}

.flashcard-back {
  background: var(--bg-card);
  border: 1px solid var(--border);
  transform: rotateY(180deg);
  color: var(--text-primary);
  font-size: 12px;
}

/* ========== 学习路径 ========== */
.learning-path {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 16px;
}

.path-node {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
}

.path-node:hover { transform: scale(1.1); }

.path-node.completed {
  background: var(--success-border);
  color: white;
}

.path-node.current {
  background: var(--primary);
  color: white;
  box-shadow: 0 0 0 4px var(--primary-light);
}

/* ========== 测验题 ========== */
.quiz-question {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin: 16px 0;
}

.quiz-question .q-text {
  font-weight: 600;
  margin-bottom: 12px;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.quiz-option {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
}

.quiz-option:hover { background: var(--bg-main); }

.quiz-option.selected {
  border-color: var(--primary);
  background: var(--info-bg);
}

.quiz-option.correct {
  border-color: var(--success-border);
  background: var(--success-bg);
}

.quiz-option.wrong {
  border-color: var(--danger-border);
  background: var(--danger-bg);
}

.quiz-feedback {
  margin-top: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  display: none;
}

.quiz-feedback.show { display: block; }
.quiz-feedback.correct { background: var(--success-bg); color: var(--success-border); }
.quiz-feedback.wrong { background: var(--danger-bg); color: var(--danger-border); }

/* ========== 动画工具样式 ========== */
@keyframes pulse {
  0%, 100% { opacity: 0.3; transform: scale(1); }
  50% { opacity: 0.9; transform: scale(1.3); }
}
.scatter-glow { transform-origin: center; transform-box: fill-box; }
.it-canvas svg { display: block; }
.it-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }