/* ========== 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;
  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: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;
}

.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 {
  display: block;
  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;
}

.tool-radio {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 1rem;
  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;
}

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

.tool-radio input[type="radio"] {
  margin: 0;
  accent-color: var(--color-primary);
  width: 16px;
  height: 16px;
  cursor: pointer;
}

.tool-radio input[type="radio"]:checked + span {
  color: var(--color-primary);
  font-weight: 600;
}

.tool-radio:has(input:checked) {
  background-color: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.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); }

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

  .tools-sidebar {
    flex: none;
    position: static;
  }

  .tools-tabs {
    flex-direction: row;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .tools-tab {
    flex: 0 0 auto;
    border-left: none;
    border-bottom: 3px solid transparent;
    white-space: nowrap;
  }

  .tools-tab.active {
    border-left-color: transparent;
    border-bottom-color: var(--color-primary);
  }
}

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

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

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