/* =====================================================================
 * subapp-override.css — 子应用审美升级覆盖层
 * 
 * 在子应用打包CSS之上叠加，统一提升子应用视觉质感
 * 覆盖 AgentHub、DocRAG、Project Helper、Tuning Kit
 * ===================================================================== */

/* ===== 1. 全局变量注入 ===== */
:root {
  /* 子应用共用设计变量 */
  --subapp-bg: var(--color-bg-page, #131627);
  --subapp-surface: var(--color-bg-card, rgba(255, 255, 255, 0.06));
  --subapp-surface-hover: var(--color-bg-card-hover, rgba(255, 255, 255, 0.09));
  --subapp-border: var(--color-border, rgba(255, 255, 255, 0.08));
  --subapp-border-hover: var(--color-border-hover, rgba(255, 255, 255, 0.15));
  --subapp-text: var(--color-text-primary, #FFFFFF);
  --subapp-text-secondary: var(--color-text-secondary, #E8EAED);
  --subapp-text-muted: var(--color-text-muted, #C5C9D2);
  --subapp-accent: var(--color-primary, #7BA7A6);
  --subapp-radius: var(--radius-md, 12px);
  --subapp-radius-lg: var(--radius-lg, 16px);
  --subapp-shadow: var(--shadow-md);
  --subapp-shadow-hover: var(--shadow-lg);
}

/* ===== 2. 背景纹理层 ===== */
.subapp-body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: var(--noise-url, none);
  background-repeat: repeat;
  opacity: var(--noise-opacity, 0.03);
  pointer-events: none;
  z-index: 9990;
  mix-blend-mode: overlay;
}

/* ===== 3. 通用卡片升级 ===== */
.subapp-card {
  background: var(--subapp-surface);
  border: 1px solid var(--subapp-border);
  border-radius: var(--subapp-radius);
  padding: var(--space-6, 24px);
  transition: all 0.3s var(--ease-out-quart, cubic-bezier(0.25, 1, 0.5, 1));
  position: relative;
  overflow: hidden;
}

.subapp-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg,
    transparent,
    rgba(255, 255, 255, 0.08),
    transparent
  );
  opacity: 0;
  transition: opacity 0.3s var(--ease-out-quart);
}

.subapp-card:hover {
  background: var(--subapp-surface-hover);
  border-color: var(--subapp-border-hover);
  transform: translateY(-2px);
  box-shadow: var(--subapp-shadow-hover);
}

.subapp-card:hover::before {
  opacity: 1;
}

/* ===== 4. 按钮系统升级 ===== */
.subapp-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  font-family: var(--font-body, sans-serif);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--subapp-text);
  background: var(--subapp-surface);
  border: 1px solid var(--subapp-border);
  border-radius: var(--subapp-radius);
  cursor: pointer;
  transition: all 0.25s var(--ease-out-quart);
  position: relative;
  overflow: hidden;
}

.subapp-btn::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg,
    transparent,
    rgba(255, 255, 255, 0.06),
    transparent
  );
  transition: left 0.5s var(--ease-out-quart);
}

.subapp-btn:hover {
  border-color: var(--subapp-accent);
  color: var(--subapp-accent);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.subapp-btn:hover::after {
  left: 100%;
}

.subapp-btn:active {
  transform: translateY(0);
}

.subapp-btn-primary {
  background: var(--subapp-accent);
  border-color: var(--subapp-accent);
  color: #fff;
}

.subapp-btn-primary:hover {
  background: transparent;
  color: var(--subapp-accent);
  box-shadow: 0 0 20px rgba(123, 167, 166, 0.2);
}

/* ===== 5. 输入框升级 ===== */
.subapp-input {
  width: 100%;
  padding: 10px 14px;
  font-family: var(--font-body, sans-serif);
  font-size: 0.875rem;
  color: var(--subapp-text);
  background: var(--color-bg-input, rgba(255, 255, 255, 0.06));
  border: 1px solid var(--subapp-border);
  border-radius: var(--subapp-radius);
  transition: all 0.25s var(--ease-out-quart);
  outline: none;
}

.subapp-input::placeholder {
  color: var(--subapp-text-muted);
  opacity: 0.6;
}

.subapp-input:hover {
  border-color: var(--subapp-border-hover);
}

.subapp-input:focus {
  border-color: var(--subapp-accent);
  box-shadow: 0 0 0 3px rgba(123, 167, 166, 0.15);
  background: var(--subapp-surface);
}

/* ===== 6. 标签/徽章升级 ===== */
.subapp-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  font-family: var(--font-mono, monospace);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--subapp-text-muted);
  background: var(--color-bg-glass, rgba(255, 255, 255, 0.04));
  border: 1px solid var(--color-border-light, rgba(255, 255, 255, 0.04));
  border-radius: 75px;
  transition: all 0.2s var(--ease-out-quart);
}

.subapp-tag:hover {
  border-color: rgba(123, 167, 166, 0.3);
  color: var(--subapp-accent);
  background: rgba(123, 167, 166, 0.08);
}

.subapp-tag-active {
  background: rgba(123, 167, 166, 0.12);
  border-color: rgba(123, 167, 166, 0.25);
  color: var(--subapp-accent);
}

/* ===== 7. 分割线升级 ===== */
.subapp-divider {
  border: none;
  height: 1px;
  background: linear-gradient(90deg,
    transparent,
    var(--subapp-border),
    transparent
  );
  margin: var(--space-8, 32px) 0;
}

/* ===== 8. 表格升级 ===== */
.subapp-table {
  width: 100%;
  border-collapse: collapse;
}

.subapp-table th {
  font-family: var(--font-mono, monospace);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--subapp-text-muted);
  text-align: left;
  padding: 12px 16px;
  border-bottom: 2px solid var(--subapp-border);
}

.subapp-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border-light, rgba(255, 255, 255, 0.04));
  font-size: 0.875rem;
  color: var(--subapp-text-secondary);
  transition: background-color 0.15s var(--ease-out-quart);
}

.subapp-table tbody tr:hover td {
  background: var(--color-bg-glass, rgba(255, 255, 255, 0.03));
}

/* ===== 9. 滚动条美化 ===== */
.subapp-scrollable::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

.subapp-scrollable::-webkit-scrollbar-track {
  background: transparent;
}

.subapp-scrollable::-webkit-scrollbar-thumb {
  background: var(--subapp-border);
  border-radius: 3px;
}

.subapp-scrollable::-webkit-scrollbar-thumb:hover {
  background: var(--subapp-border-hover);
}

/* ===== 10. 加载状态 ===== */
.subapp-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: var(--space-8, 32px);
  color: var(--subapp-text-muted);
  font-size: 0.875rem;
}

.subapp-loading::before {
  content: '';
  width: 18px;
  height: 18px;
  border: 2px solid var(--subapp-border);
  border-top-color: var(--subapp-accent);
  border-radius: 50%;
  animation: subapp-spin 0.8s linear infinite;
}

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

/* ===== 11. 空状态 ===== */
.subapp-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-16, 64px) var(--space-8, 32px);
  text-align: center;
  color: var(--subapp-text-muted);
}

.subapp-empty-icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-4, 16px);
  opacity: 0.4;
}

.subapp-empty-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--subapp-text);
  margin-bottom: var(--space-2, 8px);
}

.subapp-empty-desc {
  font-size: 0.875rem;
  max-width: 300px;
  line-height: 1.6;
}

/* ===== 12. 工具提示 ===== */
.subapp-tooltip {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  padding: 6px 12px;
  background: var(--subapp-surface);
  border: 1px solid var(--subapp-border);
  border-radius: 6px;
  box-shadow: var(--subapp-shadow);
  font-size: 0.75rem;
  color: var(--subapp-text-secondary);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: all 0.2s var(--ease-out-quart);
  z-index: 100;
}

*:hover > .subapp-tooltip {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ===== 13. 响应式 ===== */
@media (max-width: 768px) {
  .subapp-card {
    padding: var(--space-4, 16px);
  }
  
  .subapp-btn {
    min-height: 44px;
    min-width: 44px;
  }
  
  .subapp-input {
    min-height: 44px;
  }
}

/* ===== 14. 减少动效 ===== */
@media (prefers-reduced-motion: reduce) {
  .subapp-card,
  .subapp-btn,
  .subapp-tag,
  .subapp-input {
    transition: none;
  }
  
  .subapp-card:hover,
  .subapp-btn:hover {
    transform: none;
  }
  
  .subapp-card::before,
  .subapp-btn::after {
    display: none;
  }
  
  .subapp-loading::before {
    animation: none;
  }
}