/**
 * 登记页面样式
 * 
 * 仅包含 register.html 特有的样式
 * 公共样式请查看 common.css
 */

/* ==========================================================================
   容器样式
   ========================================================================== */

.container {
  max-width: 800px;
  margin: 0 auto;
  background-color: var(--container-bg);
  padding: 25px;
  border-radius: 8px;
  box-shadow: 0 2px 12px var(--shadow-color);
  position: relative;
}

/* ==========================================================================
   作业列表样式
   ========================================================================== */

.subject-list {
  margin-top: 25px;
}

.subject-item {
  margin-bottom: 15px;
  padding: 18px;
  border-radius: 6px;
  background-color: var(--secondary-bg);
  box-shadow: 0 1px 3px var(--shadow-color);
}

.subject-item.highlight {
  background-color: rgba(76, 175, 80, 0.2);
  border: 2px solid var(--primary);
}

@keyframes highlight-fade {
  0% {
    background-color: rgba(76, 175, 80, 0.3);
    transform: scale(1.01);
  }
  100% {
    background-color: var(--secondary-bg);
    transform: scale(1);
  }
}

.homework-content {
  white-space: pre-line;
  margin-top: 12px;
  padding: 12px;
  background-color: var(--container-bg);
  border-radius: 4px;
  border: 1px solid var(--border-color);
}

/* ==========================================================================
   操作按钮样式
   ========================================================================== */

.delete-btn {
  background-color: var(--danger);
  padding: 6px 12px;
  margin-left: 8px;
}

.edit-btn {
  background-color: var(--info);
  padding: 6px 12px;
}

/* ==========================================================================
   编辑面板样式
   ========================================================================== */

.edit-panel {
  display: none;
  margin-top: 25px;
  padding: 18px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background-color: var(--secondary-bg);
}

/* ==========================================================================
   建议容器样式（关键词提示）
   ========================================================================== */

.suggestions-container {
  position: absolute;
  background: var(--suggestion-bg);
  border: 1px solid var(--border-color);
  border-radius: 6px 6px 0 0;
  box-shadow: 0 -2px 8px var(--shadow-color);
  max-height: 200px;
  overflow-y: auto;
  width: 100%;
  z-index: 1001;
  display: none;
  bottom: calc(100%);
  left: 0;
}

.suggestion-item {
  padding: 10px;
  cursor: pointer;
  border-bottom: 1px solid var(--border-color);
  touch-action: manipulation;
  min-height: 40px;
  display: flex;
  align-items: center;
  transition: background-color 0.3s;
}

.suggestion-item:hover {
  background-color: var(--secondary-bg);
}

.suggestion-item.selected {
  background-color: rgba(76, 175, 80, 0.15);
  border-left: 3px solid var(--primary);
  font-weight: 500;
}

.suggestion-highlight {
  color: var(--primary);
  font-weight: bold;
}

.suggestion-hint {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  padding: 6px 10px;
  background-color: var(--secondary-bg);
  border-bottom: 1px solid var(--border-color);
  font-size: 12px;
  color: var(--text-color);
  opacity: 0.7;
}

.suggestion-hint span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.suggestion-hint kbd {
  display: inline-block;
  padding: 2px 6px;
  font-size: 11px;
  font-family: 'Consolas', 'Monaco', monospace;
  background-color: var(--container-bg);
  border: 1px solid var(--border-color);
  border-radius: 3px;
  box-shadow: 0 1px 0 var(--border-color);
}

.suggestion-list {
  max-height: 160px;
  overflow-y: auto;
}

/* ==========================================================================
   语音输入按钮样式
   ========================================================================== */

.voice-btn {
  position: absolute;
  right: 10px;
  bottom: 10px;
  background: var(--primary);
  border: none;
  cursor: pointer;
  transition: transform 0.2s;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  border-radius: 50%;
  z-index: 1002;
  pointer-events: auto;
}

.voice-btn:hover {
  transform: scale(1.1);
}

.voice-btn:active {
  transform: scale(0.9);
}

/* ==========================================================================
   可搜索下拉选择器样式
   ========================================================================== */

.searchable-select-wrapper {
  position: relative;
  width: 100%;
}

.searchable-select {
  position: relative;
  width: 100%;
}

.searchable-select-display {
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background: var(--container-bg);
  color: var(--text-color);
  font-size: 14px;
  line-height: 1.5;
  height: 38px;
  box-sizing: border-box;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: border-color 0.2s;
}

.searchable-select-display:hover {
  border-color: var(--primary);
}

.searchable-select:focus .searchable-select-display,
.searchable-select.open .searchable-select-display {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(76, 175, 80, 0.2);
}

.searchable-select.disabled .searchable-select-display {
  opacity: 0.6;
  cursor: not-allowed;
}

.select-arrow {
  transition: transform 0.2s;
}

.searchable-select.open .select-arrow {
  transform: rotate(180deg);
}

.searchable-select-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 4px;
  background: var(--container-bg);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  box-shadow: 0 4px 12px var(--shadow-color);
  z-index: 1000;
  max-height: 250px;
  overflow: hidden;
  flex-direction: column;
  display: none;
}

.searchable-select.open .searchable-select-dropdown {
  display: flex;
}

.select-search-input {
  width: 100%;
  padding: 10px;
  border: none;
  border-bottom: 1px solid var(--border-color);
  background: var(--container-bg);
  color: var(--text-color);
  outline: none;
  box-sizing: border-box;
}

.select-options {
  overflow-y: auto;
  flex: 1;
}

.select-option {
  padding: 10px;
  cursor: pointer;
  transition: background 0.15s;
}

.select-option:hover {
  background: var(--secondary-bg);
}

.select-option.selected {
  background: var(--primary);
  color: white;
}

.select-option.no-results {
  color: var(--text-secondary);
  cursor: default;
}

.select-option.no-results:hover {
  background: transparent;
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.1); }
  100% { transform: scale(1); }
}

#voiceTip {
  animation: pulse 1s infinite;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  position: fixed;
  bottom: 100px;
  right: 20px;
  padding: 12px;
  background: var(--danger);
  color: white;
  border-radius: 8px;
  z-index: 9999;
}

.voice-spinner {
  width: 24px;
  height: 24px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ==========================================================================
   特定按钮样式
   ========================================================================== */

#addHomework {
  background-color: var(--primary);
}

#gotoQuery {
  background-color: var(--primary);
}

#clearHomework {
  background-color: var(--danger);
}

#saveEdit {
  background-color: var(--primary);
}

#cancelEdit {
  background-color: var(--danger);
}

/* ==========================================================================
   版本号样式
   ========================================================================== */

footer #version {
  background-color: var(--primary);
  color: white;
  padding: 2px 8px;
  border-radius: 12px;
  font-family: 'Courier New', monospace;
  font-weight: 600;
  font-size: 0.8rem;
  display: inline-block;
  min-width: 40px;
}

/* ==========================================================================
   响应式设计
   ========================================================================== */

@media (max-width: 768px),
(pointer: coarse) {
  .suggestions-container {
    min-width: 100%;
    left: 0 !important;
  }

  .voice-btn {
    bottom: 60px !important;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 20px;
  }

  .subject-item {
    padding: 15px;
  }

  .homework-content {
    padding: 10px;
  }
}