/* ==========================================================================
   域名查询工具 - 现代舒适风格 CSS
   目标：像人手写的工具页面，而不是 AI 模板感
   ========================================================================== */

:root {
  --clr-primary:    #0066ff;       /* 主蓝 - 可替换为你的品牌色 */
  --clr-primary-d:  #0055d4;
  --clr-primary-l:  #4d90fe;

  --clr-bg:         #f6f8fd;
  --clr-surface:    #ffffff;
  --clr-surface-2:  #f0f3fa;
  --clr-divider:    #e2e8f0;

  --clr-text:       #0f172a;
  --clr-text-2:     #475569;
  --clr-text-3:     #64748b;
  --clr-text-light: #94a3b8;

  --clr-success:    #10b981;
  --clr-warning:    #f59e0b;
  --clr-error:      #ef4444;

  --radius-sm:      6px;
  --radius:         10px;
  --radius-lg:      16px;

  --shadow-sm:      0 1px 3px rgba(0,0,0,0.06);
  --shadow:         0 4px 12px -1px rgba(0,0,0,0.08), 0 2px 6px -1px rgba(0,0,0,0.04);
  --shadow-hover:   0 10px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.04);

  --transition:     0.22s cubic-bezier(0.4, 0, 0.2, 1);

  --font-base:      system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

/* 导航栏 */
.navbar {
  background: var(--clr-surface);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar-container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.navbar-brand {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--clr-primary);
  text-decoration: none;
  transition: var(--transition);
}

.navbar-brand:hover {
  color: var(--clr-primary-d);
}

.navbar-links {
  display: flex;
  gap: 8px;
}

.navbar-link {
  padding: 10px 16px;
  font-size: 0.98rem;
  font-weight: 500;
  color: var(--clr-text-2);
  text-decoration: none;
  border-radius: var(--radius);
  transition: var(--transition);
}

.navbar-link:hover {
  color: var(--clr-primary);
  background: rgba(0,102,255,0.04);
}

.navbar-link.active {
  color: var(--clr-primary);
  background: rgba(0,102,255,0.1);
}

/* 响应式导航栏 */
@media (max-width: 768px) {
  .navbar-container {
    padding: 0 12px;
  }
  
  .navbar-brand {
    font-size: 1.1rem;
  }
  
  .navbar-link {
    padding: 8px 12px;
    font-size: 0.92rem;
  }
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100%;
  font-family: var(--font-base);
  font-size: 15px;
  line-height: 1.55;
  color: var(--clr-text);
  background: var(--clr-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 32px 16px 60px;
}

/* Header */
.header {
  text-align: center;
  padding: 20px 0 48px;
}

.header h1 {
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 12px;
  color: var(--clr-text);
}

.header p {
  font-size: 1.08rem;
  color: var(--clr-text-2);
}

/* 搜索区域 */
.search-card {
  background: var(--clr-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 28px 32px 32px;
  margin-bottom: 40px;
}

.input-wrapper {
  position: relative;
  margin-bottom: 20px;
}

#domainInput {
  width: 100%;
  height: 56px;
  padding: 0 20px;
  font-size: 1.05rem;
  border: 1.5px solid var(--clr-divider);
  border-radius: var(--radius);
  background: white;
  transition: var(--transition);
}

#domainInput:focus {
  outline: none;
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.12);
}



/* 模式切换 */
.mode-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.mode-tab {
  flex: 1;
  min-width: 120px;
  height: 44px;
  font-size: 0.96rem;
  font-weight: 500;
  color: var(--clr-text-2);
  background: var(--clr-surface-2);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
}

.mode-tab:hover {
  background: #e2efff;
  color: var(--clr-primary);
}

.mode-tab.active {
  background: var(--clr-primary);
  color: white;
  box-shadow: 0 3px 10px rgba(0, 102, 255, 0.2);
}

/* 自定义服务器 */
.custom-server-input {
  display: none;
  margin: 20px 0;
}

.custom-server-input.show {
  display: block;
}

#customServer {
  width: 100%;
  height: 50px;
  padding: 0 16px;
  font-size: 1rem;
  border: 1.5px solid var(--clr-divider);
  border-radius: var(--radius);
  transition: var(--transition);
}

#customServer:focus {
  outline: none;
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
}

/* 查询按钮 */
.search-btn {
  width: 100%;
  height: 56px;
  font-size: 1.08rem;
  font-weight: 600;
  color: white;
  background: var(--clr-primary);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(0, 102, 255, 0.25);
  transition: var(--transition);
}

.search-btn:hover {
  background: var(--clr-primary-d);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(0, 102, 255, 0.3);
}

.search-btn:disabled {
  background: #94a3b8;
  box-shadow: none;
  cursor: not-allowed;
}

/* Loading 遮罩 */
.loading {
  display: none;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 12px;
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--clr-surface);
  border: 1px solid var(--clr-divider);
  border-radius: var(--radius-lg);
  padding: 16px 24px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  z-index: 1000;
}

.loading.show {
  display: flex;
  animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(100%);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

.spinner {
  width: 24px;
  height: 24px;
  min-width: 24px;
  min-height: 24px;
  border: 3px solid #e2e8f0;
  border-top: 3px solid var(--clr-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 0;
  box-sizing: content-box;
}

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

.loading-text {
  font-size: 0.96rem;
  color: var(--clr-text-2);
  font-weight: 500;
  margin: 0;
}

/* 结果区域 */
.results-container.show {
  opacity: 1;
  transform: translateY(0);
}

.result-card {
  background: var(--clr-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  margin-bottom: 32px;
  overflow: hidden;
}

.result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--clr-divider);
  background: linear-gradient(to right, #f8fafc, white);
}

.result-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.32rem;
  font-weight: 600;
}

.icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--clr-primary);
  color: white;
  font-weight: bold;
  border-radius: 50%;
  font-size: 1.1rem;
}

.result-loading {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--clr-text-3);
}

.mini-spinner {
  width: 20px;
  height: 20px;
  border: 3px solid #e2e8f0;
  border-top: 3px solid var(--clr-primary);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}

/* Tab 切换 */
.result-tabs {
  display: flex;
  border-bottom: 1px solid var(--clr-divider);
  background: var(--clr-surface-2);
}

.result-tab {
  flex: 1;
  padding: 14px 0;
  font-size: 0.98rem;
  font-weight: 500;
  color: var(--clr-text-2);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.result-tab:hover {
  color: var(--clr-primary);
  background: rgba(0,102,255,0.04);
}

.result-tab.active {
  color: var(--clr-primary);
  border-bottom: 3px solid var(--clr-primary);
  background: white;
}

/* 内容区 */
.result-content {
  display: none;
  padding: 24px;
}

.result-content.active {
  display: block;
}

/* 域名状态条 */
.domain-status {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-radius: var(--radius);
  margin-bottom: 24px;
  font-weight: 500;
}

.domain-status.registered {
  background: rgba(16, 185, 129, 0.12);
  color: var(--clr-success);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.domain-status.error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--clr-error);
  border: 1px solid rgba(239, 68, 68, 0.25);
}

.status-icon {
  font-size: 1.4rem;
}

/* 信息块 */
.info-section {
  margin-bottom: 28px;
}

.section-title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--clr-text);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--clr-divider);
}

.info-row {
  display: flex;
  padding: 10px 0;
  border-bottom: 1px solid rgba(226,232,240,0.5);
}

.info-label {
  width: 140px;
  flex-shrink: 0;
  font-weight: 500;
  color: var(--clr-text-2);
}

.info-value {
  flex: 1;
  color: var(--clr-text);
  word-break: break-all;
}

.info-value.highlight { color: var(--clr-warning); font-weight: 600; }
.info-value.success   { color: var(--clr-success); }
.info-value.warning   { color: var(--clr-warning); }
.info-value.error     { color: var(--clr-error); }

/* DNS 服务器 */
.dns-servers {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.dns-server-item {
  padding: 8px 14px;
  background: var(--clr-surface-2);
  border-radius: var(--radius-sm);
  font-size: 0.96rem;
  color: var(--clr-text-2);
  border: 1px solid var(--clr-divider);
}

/* 原始数据 */
.raw-data {
  background: #0f172a;
  color: #e2e8f0;
  padding: 20px;
  border-radius: var(--radius);
  font-family: 'SF Mono', 'Consolas', 'Courier New', monospace;
  font-size: 0.94rem;
  white-space: pre-wrap;
  overflow-x: auto;
  max-height: 600px;
  line-height: 1.45;
}

/* API 文档部分 */
.api-docs-section {
  background: var(--clr-bg);
  padding: 60px 0;
  margin-top: 40px;
}

.api-docs-section h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 16px;
  text-align: center;
}

.api-docs-description {
  font-size: 1.1rem;
  color: var(--clr-text-2);
  text-align: center;
  margin-bottom: 48px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.api-card {
  background: var(--clr-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 32px;
  margin-bottom: 32px;
}

.api-card h3 {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--clr-divider);
}

.api-card h4 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--clr-text);
  margin: 24px 0 12px;
}

.api-endpoint {
  background: var(--clr-surface-2);
  padding: 12px 16px;
  border-radius: var(--radius);
  margin: 16px 0;
  font-family: 'SF Mono', 'Consolas', 'Courier New', monospace;
}

.api-params-table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
}

.api-params-table th,
.api-params-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--clr-divider);
}

.api-params-table th {
  background: var(--clr-surface-2);
  font-weight: 600;
  color: var(--clr-text-2);
}

.api-params-table tr:last-child td {
  border-bottom: none;
}

.api-example {
  background: var(--clr-surface-2);
  padding: 12px 16px;
  border-radius: var(--radius);
  margin: 16px 0;
  font-family: 'SF Mono', 'Consolas', 'Courier New', monospace;
  font-size: 0.94rem;
}

.api-response {
  background: #0f172a;
  color: #e2e8f0;
  padding: 20px;
  border-radius: var(--radius);
  font-family: 'SF Mono', 'Consolas', 'Courier New', monospace;
  font-size: 0.94rem;
  white-space: pre-wrap;
  overflow-x: auto;
  margin: 16px 0;
}

.api-limits {
  list-style-position: inside;
  margin: 16px 0;
  padding-left: 16px;
}

.api-limits li {
  margin-bottom: 8px;
  color: var(--clr-text-2);
}

/* 响应式微调 */
@media (max-width: 768px) {
  .container { padding: 20px 12px 40px; }
  .search-card { padding: 24px 20px; }
  .header h1 { font-size: 2rem; }
  .mode-tabs { flex-direction: row; gap: 8px; overflow-x: auto; white-space: nowrap; }
  .domain-input-container { flex-direction: column; height: auto; gap: 12px; }
  #domainInput { height: 50px; }
  #suffixSelect { width: 100%; height: 50px; }
  .info-row { flex-direction: column; gap: 4px; }
  .info-label { width: auto; }
  
  .api-docs-section { padding: 40px 0; }
  .api-card { padding: 24px 20px; }
  .api-params-table th,
  .api-params-table td {
    padding: 8px 12px;
    font-size: 0.9rem;
  }
  .api-params-table {
    font-size: 0.9rem;
  }
}