@font-face {
  font-family: 'Noto Serif SC';
  src: url('https://static.tian14.com/fonts/NotoSerifSC-Regular.woff2') format('woff2');
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: 'Noto Serif SC';
  src: url('https://static.tian14.com/fonts/NotoSerifSC-SemiBold.woff2') format('woff2');
  font-weight: 600;
  font-display: swap;
}

@font-face {
  font-family: 'Noto Serif SC';
  src: url('https://static.tian14.com/fonts/NotoSerifSC-Bold.woff2') format('woff2');
  font-weight: 700;
  font-display: swap;
}

/* CSS Variables for easy theme management */
:root {
  --primary-color: #007aff;
  --primary-hover-color: #0056b3;
  --card-bg: #ffffff;
  --body-bg: #f7f8fc;
  --text-color: #333;
  --text-muted-color: #6c757d;
  --border-color: #dee2e6;
  --input-bg: #fff;
  --input-focus-border: #80bdff;
  --input-focus-shadow: 0 0 0 0.2rem rgba(0, 123, 255, .25);
  --success-color: #28a745;
  --danger-color: #dc3545;
  --radius: 8px;
  --result-bg: #f8f9fa;
  --result-item-bg: #fff;
  --raw-json-bg: #2d2d2d;
  --raw-json-color: #ccc;
  --btn-secondary-bg: #f8f9fa;
  --btn-secondary-hover: #e9ecef;
}

/* Dark Theme */
[data-theme="dark"] {
  --primary-color: #4da3ff;
  --primary-hover-color: #7ab8ff;
  --card-bg: #1e1e1e;
  --body-bg: #121212;
  --text-color: #f0f0f0;
  --text-muted-color: #b0b0b0;
  --border-color: #444;
  --input-bg: #2a2a2a;
  --input-focus-border: #4da3ff;
  --input-focus-shadow: 0 0 0 0.2rem rgba(77, 163, 255, .25);
  --success-color: #4caf50;
  --danger-color: #f44336;
  --result-bg: #252525;
  --result-item-bg: #2a2a2a;
  --raw-json-bg: #1a1a1a;
  --raw-json-color: #b0b0b0;
  --btn-secondary-bg: #333;
  --btn-secondary-hover: #444;
}

/* 骨架屏加载效果 */
.skeleton {
  background: linear-gradient(90deg, 
    var(--result-bg) 25%, 
    var(--result-item-bg) 50%, 
    var(--result-bg) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: 6px;
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
}

.skeleton-item {
  height: 60px;
}

/* 查询中脉冲动画 */
.loading-pulse {
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* General Body Styles */
body {
  font-family: 'Noto Serif SC', serif;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  margin: 0;
  background: var(--body-bg);
  color: var(--text-color);
  line-height: 1.6;
  transition: background 0.3s ease, color 0.3s ease;
}

/* The main card container */
.card {
  background: var(--card-bg);
  padding: 32px;
  border-radius: var(--radius);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.07);
  border: 1px solid rgba(0, 0, 0, 0.05);
  width: 92%;
  max-width: 700px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  margin: 20px 0;
  position: relative;
}

/* Corner decorations using dedicated elements */
.corner {
  position: absolute;
  z-index: 10;
  pointer-events: none;
}

/* Horizontal and vertical lines for each corner */
.corner::before,
.corner::after {
  content: '';
  position: absolute;
  background: linear-gradient(90deg, #ff6b6b, #feca57, #48dbfb, #ff9ff3, #54a0ff);
  background-size: 200% 100%;
  animation: gradientShift 3s ease infinite;
  border-radius: 2px;
}

/* Top-left corner */
.corner-tl {
  top: -2px;
  left: -2px;
}

.corner-tl::before {
  width: 80px;
  height: 3px;
  top: 0;
  left: 0;
}

.corner-tl::after {
  width: 3px;
  height: 40px;
  top: 0;
  left: 0;
  background: linear-gradient(180deg, #ff6b6b, #feca57, #48dbfb, #ff9ff3, #54a0ff);
  background-size: 100% 200%;
  animation: gradientShiftV 3s ease infinite;
}

/* Top-right corner */
.corner-tr {
  top: -2px;
  right: -2px;
}

.corner-tr::before {
  width: 80px;
  height: 3px;
  top: 0;
  right: 0;
  background: linear-gradient(270deg, #ff6b6b, #feca57, #48dbfb, #ff9ff3, #54a0ff);
}

.corner-tr::after {
  width: 3px;
  height: 40px;
  top: 0;
  right: 0;
  background: linear-gradient(180deg, #ff6b6b, #feca57, #48dbfb, #ff9ff3, #54a0ff);
  background-size: 100% 200%;
  animation: gradientShiftV 3s ease infinite;
}

/* Bottom-left corner */
.corner-bl {
  bottom: -2px;
  left: -2px;
}

.corner-bl::before {
  width: 80px;
  height: 3px;
  bottom: 0;
  left: 0;
  background: linear-gradient(90deg, #54a0ff, #ff9ff3, #48dbfb, #feca57, #ff6b6b);
}

.corner-bl::after {
  width: 3px;
  height: 40px;
  bottom: 0;
  left: 0;
  background: linear-gradient(0deg, #54a0ff, #ff9ff3, #48dbfb, #feca57, #ff6b6b);
  background-size: 100% 200%;
  animation: gradientShiftV 3s ease infinite;
}

/* Bottom-right corner */
.corner-br {
  bottom: -2px;
  right: -2px;
}

.corner-br::before {
  width: 80px;
  height: 3px;
  bottom: 0;
  right: 0;
  background: linear-gradient(270deg, #54a0ff, #ff9ff3, #48dbfb, #feca57, #ff6b6b);
}

.corner-br::after {
  width: 3px;
  height: 40px;
  bottom: 0;
  right: 0;
  background: linear-gradient(0deg, #54a0ff, #ff9ff3, #48dbfb, #feca57, #ff6b6b);
  background-size: 100% 200%;
  animation: gradientShiftV 3s ease infinite;
}

@keyframes gradientShift {

  0%,
  100% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }
}

@keyframes gradientShiftV {

  0%,
  100% {
    background-position: 50% 0%;
  }

  50% {
    background-position: 50% 100%;
  }
}

/* Header Row */
.header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

/* Title */
h1 {
  margin: 0;
  font-size: 24px;
  font-weight: 600;
  color: var(--text-color);
}

/* Theme Toggle Button */
.theme-toggle {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  padding: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.theme-toggle:hover {
  background: var(--result-bg);
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
}

.theme-toggle .icon-sun {
  display: block;
  color: #333;
}

.theme-toggle .icon-moon {
  display: none;
  color: #e0e0e0;
}

[data-theme="dark"] .theme-toggle .icon-sun {
  display: none;
}

[data-theme="dark"] .theme-toggle .icon-moon {
  display: block;
}

/* Tabs */
.tabs {
  display: flex;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
  gap: 20px;
}

.tab-btn {
  background: none;
  border: none;
  padding: 10px 0;
  font-family: inherit;
  font-size: 16px;
  color: var(--text-muted-color);
  cursor: pointer;
  position: relative;
  transition: color 0.2s;
}

.tab-btn:hover {
  color: var(--primary-color);
  background: none;
}

.tab-btn.active {
  color: var(--primary-color);
  font-weight: 600;
}

.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--primary-color);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(5px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Input and Button row */
.row {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
}

input[type=text] {
  flex: 1;
  padding: 10px 14px;
  font-size: 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  outline: none;
  background: var(--input-bg);
  color: var(--text-color);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

input[type=text]:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.15);
}

/* Button styles with icon and loading state */
button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 18px;
  font-size: 15px;
  font-weight: 500;
  border: 0;
  border-radius: var(--radius);
  background: var(--primary-color);
  color: #fff;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
}

button:hover {
  background: var(--primary-hover-color);
}

button:active {
  transform: scale(0.98);
}

button:disabled {
  background-color: #a0a0a0;
  cursor: not-allowed;
}

/* Specific button styles */
.file-upload-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  font-size: 15px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  background: var(--btn-secondary-bg);
  color: var(--text-color);
  cursor: pointer;
  transition: all 0.2s;
}

.file-upload-btn:hover {
  background: var(--btn-secondary-hover);
  border-color: var(--border-color);
}

.file-upload-btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.clear-btn {
  background: var(--card-bg);
  border: 1px solid var(--danger-color);
  color: var(--danger-color);
}

.clear-btn:hover {
  background: var(--danger-color);
  color: #fff;
}

.export-btn {
  background: var(--card-bg);
  border: 1px solid var(--primary-color);
  color: var(--primary-color);
}

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

.diag-btn {
  background: var(--btn-secondary-bg);
  color: var(--text-color);
  padding: 6px 12px;
  font-size: 13px;
}

.diag-btn:hover {
  background: var(--btn-secondary-hover);
}

.diag-btn svg {
  width: 14px;
  height: 14px;
}

.icon {
  width: 1em;
  height: 1em;
}

.loader {
  width: 16px;
  height: 16px;
  border: 2px solid #fff;
  border-bottom-color: transparent;
  border-radius: 50%;
  display: inline-block;
  box-sizing: border-box;
  animation: rotation 1s linear infinite;
}

@keyframes rotation {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

/* Result area styles */
#result {
  margin-top: 20px;
  background: var(--result-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 20px;
  min-height: 140px;
  font-size: 15px;
  transition: all 0.3s ease;
  position: relative;
}

#result.muted {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted-color);
}

#result.error {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--danger-color);
  font-weight: 500;
}

/* Grid layout for results */
.result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
}

.result-item {
  display: flex;
  flex-direction: column;
  background: var(--result-item-bg);
  padding: 10px 12px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
}

.result-item.full-width {
  grid-column: 1 / -1;
}

.result-label {
  font-size: 12px;
  color: var(--text-muted-color);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
  font-weight: 600;
}

.result-value {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-color);
  word-break: break-word;
  line-height: 1.4;
}

[data-theme="dark"] .result-value {
  color: #fff;
}

.result-value.ip-address {
  color: var(--primary-color);
  font-family: monospace;
  font-size: 15px;
}

/* Map specific styles */
.map-container {
  margin-top: 20px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow: hidden;
  background: #f8f9fa;
}

#map {
  height: 300px;
  width: 100%;
  z-index: 1;
  /* Ensure map is below dropdowns if any */
}

/* Fix Leaflet tile loading glitch */
.leaflet-container {
  background: #f8f9fa;
}

.map-links {
  padding: 8px 12px;
  background: #fff;
  border-top: 1px solid var(--border-color);
  font-size: 13px;
  display: flex;
  gap: 12px;
  align-items: center;
}

.map-links a {
  color: var(--primary-color);
  text-decoration: none;
}

.map-links a:hover {
  text-decoration: underline;
}

/* Diagnostic Tools Area */
.diag-tools {
  margin-top: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding-top: 16px;
  border-top: 1px solid #eee;
}

.diag-label {
  font-size: 13px;
  color: var(--text-muted-color);
  font-weight: 600;
}

/* Export Area */
.export-area {
  margin-top: 16px;
  text-align: right;
}

/* Batch Query Styles */
.batch-input-area {
  margin-bottom: 20px;
}

textarea#batchInput {
  width: 100%;
  height: 150px;
  padding: 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  resize: vertical;
  font-family: inherit;
  font-size: 14px;
  box-sizing: border-box;
  margin-bottom: 10px;
  background: var(--input-bg);
  color: var(--text-color);
}

textarea#batchInput:focus {
  border-color: var(--primary-color);
  outline: none;
}

.batch-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.batch-progress {
  margin: 20px 0;
}

.progress-bar {
  height: 6px;
  background: #eee;
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 6px;
}

.progress-fill {
  height: 100%;
  background: var(--primary-color);
  width: 0%;
  transition: width 0.3s ease;
}

.progress-text {
  font-size: 12px;
  color: #666;
}

.batch-result {
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  max-height: 400px;
  overflow-y: auto;
  font-size: 13px;
}

.batch-item {
  display: grid;
  grid-template-columns: 140px 100px 1fr;
  gap: 10px;
  padding: 8px 12px;
  border-bottom: 1px solid #eee;
  align-items: center;
}

.batch-item:last-child {
  border-bottom: none;
}

.batch-item .ip {
  font-family: monospace;
  font-weight: 600;
  color: var(--primary-color);
}

.batch-item .loc {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.batch-item .status {
  font-size: 12px;
  font-weight: 600;
}

.batch-item .success-text {
  color: var(--success-color);
}

.batch-item .error-text {
  color: var(--danger-color);
}

.batch-item.error {
  background: #fff5f5;
}

/* History Styles */
.history-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.history-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.history-card {
  background: var(--result-item-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 12px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: box-shadow 0.2s;
}

.history-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.history-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.history-ip {
  font-family: monospace;
  font-weight: 600;
  color: var(--primary-color);
  font-size: 15px;
}

.history-details {
  font-size: 13px;
  color: #666;
}

.history-time {
  font-size: 12px;
  color: #999;
}

.history-btn {
  padding: 6px 12px;
  font-size: 13px;
  background: var(--btn-secondary-bg);
  color: var(--text-color);
  border: 1px solid var(--border-color);
}

.history-btn:hover {
  background: var(--btn-secondary-hover);
  border-color: var(--border-color);
}

.empty-state {
  text-align: center;
  padding: 40px;
  color: #999;
  font-style: italic;
}

/* Raw JSON toggle */
.raw-json-btn {
  margin-top: 16px;
  font-size: 12px;
  color: #999;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  text-decoration: underline;
  display: inline-block;
}

.raw-json-btn:hover {
  color: var(--primary-color);
  background: none;
}

.raw-json {
  margin-top: 10px;
  padding: 12px;
  background: #2d2d2d;
  color: #ccc;
  border-radius: 4px;
  font-family: 'Menlo', 'Monaco', monospace;
  font-size: 12px;
  overflow-x: auto;
  display: none;
  line-height: 1.5;
}

.raw-json.show {
  display: block;
}

/* Mobile responsive adjustments */
@media (max-width: 600px) {
  .card {
    padding: 20px;
    width: 95%;
  }

  .row {
    flex-direction: column;
  }

  .history-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .history-btn {
    width: 100%;
  }

  .diag-tools {
    justify-content: space-between;
  }

  .diag-btn {
    flex: 1;
    justify-content: center;
  }
}

/* Copy Button */
.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  font-size: 13px;
  background: var(--card-bg);
  border: 1px solid var(--primary-color);
  border-radius: var(--radius);
  color: var(--primary-color);
  cursor: pointer;
  transition: all 0.2s;
}

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

.copy-btn svg {
  width: 14px;
  height: 14px;
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  padding: 12px 24px;
  background: var(--success-color);
  color: #fff;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  opacity: 0;
  transition: all 0.3s ease;
  z-index: 1000;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast.error {
  background: var(--danger-color);
}

/* Diagnostic Result */
.diag-result {
  margin-top: 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow: hidden;
}

.diag-result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  background: var(--result-bg);
  border-bottom: 1px solid var(--border-color);
  font-weight: 600;
  font-size: 14px;
}

.diag-close {
  background: none;
  border: none;
  font-size: 20px;
  color: var(--text-muted-color);
  cursor: pointer;
  padding: 0 6px;
  line-height: 1;
}

.diag-close:hover {
  color: var(--danger-color);
  background: none;
}

#diagResultContent {
  margin: 0;
  padding: 14px;
  background: var(--raw-json-bg);
  color: var(--raw-json-color);
  font-family: 'Menlo', 'Monaco', monospace;
  font-size: 12px;
  max-height: 300px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

/* IP Type Badge */
.ip-type-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  margin-left: 8px;
  vertical-align: middle;
  font-family: inherit;
}

.type-public {
  background: rgba(40, 167, 69, 0.15);
  color: var(--success-color);
}

.type-private {
  background: rgba(255, 152, 0, 0.15);
  color: #ff9800;
}

.type-loopback {
  background: rgba(0, 122, 255, 0.15);
  color: var(--primary-color);
}

.type-local {
  background: rgba(156, 39, 176, 0.15);
  color: #9c27b0;
}

.type-reserved {
  background: rgba(108, 117, 125, 0.15);
  color: var(--text-muted-color);
}

/* Additional Info (Proxy/rDNS) */
.additional-info {
  margin-top: 16px;
  padding: 16px;
  background: var(--result-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
}

.loading-additional {
  text-align: center;
  color: var(--text-muted-color);
  font-size: 14px;
}

.no-additional {
  text-align: center;
  color: var(--text-muted-color);
  font-size: 14px;
}

.additional-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 12px;
}

.additional-item {
  display: flex;
  flex-direction: column;
  background: var(--result-item-bg);
  padding: 10px 12px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
}

.additional-item.full-width {
  grid-column: 1 / -1;
}

.additional-label {
  font-size: 11px;
  color: var(--text-muted-color);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
  font-weight: 600;
}

.additional-value {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-color);
}

.additional-value.rdns {
  font-family: monospace;
  font-size: 12px;
  word-break: break-all;
}

.status-ok {
  color: var(--success-color);
}

.status-warning {
  color: #ff9800;
}

.status-danger {
  color: var(--danger-color);
}

/* ==================== 页面美化增强 ==================== */

/* 结果卡片入场动画 */
.result-item {
  animation: slideUp 0.3s ease forwards;
  opacity: 0;
}

.result-item:nth-child(1) { animation-delay: 0.05s; }
.result-item:nth-child(2) { animation-delay: 0.1s; }
.result-item:nth-child(3) { animation-delay: 0.15s; }
.result-item:nth-child(4) { animation-delay: 0.2s; }
.result-item:nth-child(5) { animation-delay: 0.25s; }
.result-item:nth-child(6) { animation-delay: 0.3s; }
.result-item:nth-child(7) { animation-delay: 0.35s; }

@keyframes slideUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 暗色主题地图滤镜 */
[data-theme="dark"] .leaflet-container {
  filter: invert(1) hue-rotate(180deg) brightness(0.9) contrast(0.9);
}

[data-theme="dark"] .leaflet-container .leaflet-marker-icon,
[data-theme="dark"] .leaflet-container .leaflet-marker-shadow {
  filter: invert(1) hue-rotate(180deg);
}

[data-theme="dark"] .map-links {
  background: var(--result-item-bg);
}

/* 输入框焦点发光增强 */
input[type=text]:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.15),
              0 0 20px rgba(0, 123, 255, 0.08);
}

[data-theme="dark"] input[type=text]:focus {
  box-shadow: 0 0 0 3px rgba(77, 163, 255, 0.2),
              0 0 20px rgba(77, 163, 255, 0.1);
}

/* 按钮悬停效果增强 */
#queryBtn {
  position: relative;
  overflow: hidden;
}

#queryBtn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 122, 255, 0.25);
}

#queryBtn:active {
  transform: translateY(0) scale(0.98);
  box-shadow: none;
}

/* 标签页切换动画 */
.tab-btn {
  transition: color 0.2s, transform 0.2s;
}

.tab-btn:hover {
  transform: translateY(-1px);
}

.tab-btn.active::after {
  animation: tabUnderline 0.3s ease;
}

@keyframes tabUnderline {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

/* 历史卡片悬停效果 */
.history-card {
  transition: transform 0.2s, box-shadow 0.2s;
}

.history-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] .history-card:hover {
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

/* 批量结果行悬停 */
.batch-item {
  transition: background 0.2s;
}

.batch-item:hover {
  background: var(--result-bg);
}

/* 主题切换按钮动画 */
.theme-toggle svg {
  transition: transform 0.3s ease;
}

.theme-toggle:hover svg {
  transform: rotate(15deg);
}

/* 角落装饰悬停增强 */
.card:hover .corner::before,
.card:hover .corner::after {
  filter: brightness(1.2);
}