/* ========== 健康工具页面 ========== */
.tools-page {
  margin-top: 1rem;
}

.tools-layout {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

/* 左侧 Tab 侧边栏 */
.tools-sidebar {
  flex: 0 0 200px;
  align-self: stretch;
}

.tools-tabs {
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 10px;
  overflow: hidden;
  position: sticky;
  top: 80px;
}

.tools-tab {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.875rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: none;
  border: none;
  border-left: 3px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: left;
  width: 100%;
}

.tools-tab svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.tools-tab:hover {
  background-color: var(--color-bg-header);
  color: var(--color-text-primary);
}

.tools-tab.active {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  border-left-color: var(--color-primary);
  font-weight: 600;
}

/* 右侧内容区 */
.tools-content {
  flex: 1;
  min-width: 0;
  min-height: 480px;
  width: 100%;
  box-sizing: border-box;
}

.tool-panel {
  display: none;
}

.tool-panel.active {
  display: block;
  animation: toolFadeIn 0.25s ease;
}

@keyframes toolFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.tool-card {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 12px;
  padding: 1.75rem;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
}

.tool-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0;
}

.tool-desc {
  margin-top: 0.5rem;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* 表单 */
.tool-form {
  margin-top: 1.5rem;
}

.tool-field {
  margin-top: 1rem;
}

.tool-field:first-child {
  margin-top: 0;
}

.tool-field label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 0.5rem;
}

.tool-input,
.tool-select {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 0.9375rem;
  color: var(--color-text-primary);
  background-color: var(--color-bg-header);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  transition: all 0.2s ease;
  box-sizing: border-box;
}

.tool-input:focus,
.tool-select:focus {
  outline: none;
  border-color: var(--color-primary);
  background-color: var(--color-bg);
  box-shadow: 0 0 0 3px rgba(74, 140, 94, 0.1);
}

.tool-field-row {
  display: flex;
  gap: 1rem;
}

.tool-field-row .tool-field {
  flex: 1;
  margin-top: 0;
}

/* 单选框组 */
.tool-radio-group {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.tool-radio {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1.5rem;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  background-color: var(--color-bg-header);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
  min-width: 80px;
  position: relative;
  overflow: hidden;
}

.tool-radio input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

.tool-radio:hover {
  border-color: var(--color-primary);
  color: var(--color-text-primary);
}

.tool-radio:has(input:checked) {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  font-weight: 600;
}

.tool-buttons {
  margin-top: 1.5rem;
  display: flex;
  gap: 0.75rem;
}

.tool-btn {
  padding: 0.75rem 1.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.tool-btn-primary {
  background-color: var(--color-primary);
  color: #fff;
}

.tool-btn-primary:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(74, 140, 94, 0.25);
}

.tool-btn-secondary {
  background-color: var(--color-bg-header);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.tool-btn-secondary:hover {
  background-color: var(--color-bg-card);
  color: var(--color-text-primary);
}

/* 结果区 */
.tool-result {
  margin-top: 1.5rem;
  padding: 1.25rem;
  background-color: var(--color-bg-header);
  border-radius: 10px;
  border: 1px solid var(--color-border-light);
}

.tool-result-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
}

.tool-result-label {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.tool-result-status {
  margin-top: 0.5rem;
  font-size: 1rem;
  font-weight: 600;
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 6px;
}

.tool-result-advice {
  margin-top: 0.75rem;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

/* 标签 */
.tool-tag {
  display: inline-block;
  padding: 0.125rem 0.5rem;
  font-size: 0.6875rem;
  font-weight: 600;
  border-radius: 4px;
  min-width: 3em;
  text-align: center;
}

.tag-thin { background-color: var(--color-info-bg); color: var(--color-info); }
.tag-normal { background-color: var(--color-success-bg); color: var(--color-success); }
.tag-overweight { background-color: var(--color-warning-bg); color: var(--color-warning); }
.tag-obese { background-color: var(--color-danger-bg); color: var(--color-danger); }

/* 参考标准 */
.tool-reference {
  margin-top: 1.5rem;
  padding: 1rem 1.25rem;
  background-color: var(--color-bg-header);
  border-radius: 8px;
  border: 1px solid var(--color-border-light);
}

.tool-reference h4 {
  margin: 0;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.tool-reference ul {
  list-style: none;
  padding: 0;
  margin: 0.75rem 0 0 0;
}

.tool-reference li {
  padding: 0.375rem 0;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* 暗色模式 */
html.dark-theme .tools-tabs {
  background-color: var(--color-bg-card);
  border-color: var(--color-border);
}

html.dark-theme .tools-tab {
  color: var(--color-text-secondary);
}

html.dark-theme .tools-tab:hover {
  background-color: var(--color-bg-header);
}

html.dark-theme .tools-tab.active {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

html.dark-theme .tool-card {
  background-color: var(--color-bg-card);
  border-color: var(--color-border);
}

html.dark-theme .tool-input,
html.dark-theme .tool-select {
  background-color: var(--color-bg-header);
  border-color: var(--color-border);
  color: var(--color-text-primary);
}

html.dark-theme .tool-input:focus,
html.dark-theme .tool-select:focus {
  background-color: var(--color-bg-card);
}

html.dark-theme .tool-btn-secondary {
  background-color: var(--color-bg-header);
  border-color: var(--color-border);
}

html.dark-theme .tool-result {
  background-color: var(--color-bg-header);
  border-color: var(--color-border);
}

html.dark-theme .tool-result-advice {
  color: var(--color-text-secondary);
}

html.dark-theme .tool-reference {
  background-color: var(--color-bg-header);
  border-color: var(--color-border);
}

html.dark-theme .tag-thin { background-color: rgba(91, 192, 222, 0.15); }
html.dark-theme .tag-normal { background-color: rgba(92, 184, 92, 0.15); }
html.dark-theme .tag-overweight { background-color: rgba(240, 173, 78, 0.15); }
html.dark-theme .tag-obese { background-color: rgba(217, 83, 79, 0.15); }

/* 暗色模式：手机端下拉框 */
@media (max-width: 768px) {
  html.dark-theme .tools-mobile-select {
    background-color: var(--color-bg-card);
    border-color: var(--color-border);
  }

  html.dark-theme .tools-mobile-select-input {
    background-color: var(--color-bg-header);
    border-color: var(--color-border);
    color: var(--color-text-primary);
  }

  html.dark-theme .tools-mobile-select-input:focus {
    background-color: var(--color-bg-card);
  }
}

/* 手机端：内容区顶部工具下拉框（仅移动端显示，替代原抽屉侧边栏） */
.tools-mobile-select {
  display: none;
}

/* 手机端浮动触发按钮 + 抽屉面板（桌面端隐藏，768px 以下也不再使用） */
.tools-fab {
  display: none;
}

.tools-overlay {
  display: none;
}

/* 响应式 */
@media (max-width: 768px) {
  .tools-layout {
    flex-direction: column;
    position: static;
  }

  /* 隐藏旧的浮动侧边条（FAB/遮罩/抽屉侧边栏），统一改为顶部下拉 */
  .tools-fab,
  .tools-overlay,
  .tools-sidebar {
    display: none !important;
  }

  /* 手机端显示下拉框，放在 tools-content 上方 */
  .tools-mobile-select {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1rem;
    background-color: var(--color-bg-surface);
    border: 1px solid var(--color-border-light);
    border-radius: 10px;
    width: 100%;
    box-sizing: border-box;
  }

  .tools-mobile-select-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    flex-shrink: 0;
    white-space: nowrap;
  }

  .tools-mobile-select-input {
    flex: 1;
    min-width: 0;
    padding: 0.5rem 0.875rem;
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: 6px;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 1em;
    padding-right: 2rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
  }

  .tools-mobile-select-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
  }
}

@media (max-width: 480px) {
  .tool-card {
    padding: 1.25rem;
  }

  .tool-field-row {
    flex-direction: column;
    gap: 0;
  }

  .tool-buttons {
    flex-direction: column;
  }
}