/* 工具页面专属样式 */

/* 页面容器 */
.page.single-page {
  position: relative;
}

/* Hero区域 */
.tools-hero {
  background: var(--card-bg);
  color: var(--text-primary);
  padding: 2.2rem 2rem;
  border-radius: var(--radius-xl);
  margin-bottom: 1.8rem;
  position: relative;
  overflow: hidden;
  text-align: center;
  animation: fadeInDown 0.6s ease-out;
  border: 1px solid var(--border-color);
  box-shadow: 0 20px 50px rgba(17, 24, 39, 0.1);
}

.tools-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(67, 56, 202, 0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.tools-hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -5%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(67, 56, 202, 0.04) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 返回按钮 */
.back-to-home-link {
  position: absolute;
  top: 1.5rem;
  left: 1.5rem;
  z-index: 10;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-md);
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.back-to-home-link:hover {
  background: var(--primary-light);
  border-color: var(--primary-color);
  transform: translateX(-3px);
  box-shadow: var(--shadow-md);
}

.back-to-home-link:active {
  transform: translateX(0);
}

.tools-hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
}

.tools-hero h1 {
  font-size: clamp(2.3rem, 4vw, 3.4rem);
  line-height: 1.05;
  margin-bottom: 1rem;
  animation: slideInUp 0.8s ease-out;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  color: var(--text-primary);
  font-weight: 600;
}

.hero-icon {
  width: 3rem;
  height: 3rem;
  object-fit: contain;
  filter: drop-shadow(0 2px 8px rgba(67, 56, 202, 0.2));
  animation: float 3s ease-in-out infinite;
  display: inline-block;
  font-size: 3rem;
  line-height: 1;
  vertical-align: middle;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.tools-hero p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  animation: slideInUp 0.8s ease-out 0.2s both;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}

.hero-stats {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  justify-content: center;
  animation: slideInUp 0.8s ease-out 0.4s both;
}

.stat-item {
  text-align: center;
  background: var(--card-bg);
  padding: 1rem 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-color);
}

.stat-number {
  font-size: 1.75rem;
  font-weight: 600;
  display: block;
  color: var(--primary-color);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* 工具栏 - 搜索和筛选 */
.tools-toolbar {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
  animation: fadeInUp 0.6s ease-out 0.3s both;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.search-wrapper {
  width: 100%;
}

.search-input {
  width: 100%;
  padding: 0.95rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-input);
  background: #fbfaf6;
  font-size: 0.95rem;
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.search-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(67, 56, 202, 0.1);
  background: white;
}

.category-filter {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: center;
}

.filter-btn {
  padding: 0.75rem 1rem;
  border-radius: 999px;
  border: 1px solid #e2e8f0;
  background: #f8fafc;
  color: #334155;
  cursor: pointer;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  font-weight: 500;
  position: relative;
  overflow: hidden;
}

.filter-btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(67, 56, 202, 0.1);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.filter-btn:hover::before {
  width: 300px;
  height: 300px;
}

.filter-btn:hover {
  background: var(--primary-light);
  border-color: var(--primary-color);
  color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(28, 41, 57, 0.12);
}

.filter-btn.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
  animation: pulse 0.3s ease;
}

/* 工具卡片网格 */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.8rem;
  margin: 2rem 0;
}

.tool-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.6s ease-out both;
}

.tool-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(67, 56, 202, 0.06) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--transition-fast);
  pointer-events: none;
}

.tool-card:hover::after {
  opacity: 1;
}

.tool-card:nth-child(1) { animation-delay: 0.1s; }
.tool-card:nth-child(2) { animation-delay: 0.15s; }
.tool-card:nth-child(3) { animation-delay: 0.2s; }
.tool-card:nth-child(4) { animation-delay: 0.25s; }
.tool-card:nth-child(5) { animation-delay: 0.3s; }
.tool-card:nth-child(6) { animation-delay: 0.35s; }
.tool-card:nth-child(7) { animation-delay: 0.4s; }
.tool-card:nth-child(8) { animation-delay: 0.45s; }
.tool-card:nth-child(9) { animation-delay: 0.5s; }
.tool-card:nth-child(10) { animation-delay: 0.55s; }
.tool-card:nth-child(11) { animation-delay: 0.6s; }
.tool-card:nth-child(12) { animation-delay: 0.65s; }
.tool-card:nth-child(13) { animation-delay: 0.7s; }
.tool-card:nth-child(14) { animation-delay: 0.75s; }
.tool-card:nth-child(15) { animation-delay: 0.8s; }
.tool-card:nth-child(16) { animation-delay: 0.85s; }
.tool-card:nth-child(17) { animation-delay: 0.9s; }
.tool-card:nth-child(18) { animation-delay: 0.95s; }

.tool-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--primary-hover));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-normal);
}

.tool-card:hover::before {
  transform: scaleX(1);
}

.tool-card:hover {
  background: var(--card-bg);
  border-color: var(--primary-color);
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.tool-card.featured {
  background: var(--card-featured-bg);
  border-color: #f5dcb7;
  box-shadow: var(--shadow-sm);
}

.tool-card.hidden {
  display: none;
}

.tool-icon {
  font-size: 2.5rem;
  margin-bottom: 0.875rem;
  display: block;
  filter: drop-shadow(0 2px 6px rgba(67, 56, 202, 0.15));
  transition: transform var(--transition-fast);
}

.tool-card:hover .tool-icon {
  transform: scale(1.1) rotate(5deg);
}

.tool-title {
  font-size: 1.75rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.tool-desc {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1rem;
  min-height: 3rem;
  font-size: 0.95rem;
}

.tool-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin-bottom: 1rem;
}

.tool-tags .chip {
  padding: 0.5rem 0.85rem;
  border-radius: 999px;
  background: #f8fafc;
  color: #334155;
  font-size: 0.85rem;
  border: 1px solid #e2e8f0;
  transition: all var(--transition-fast);
}

.tool-tags .chip:hover {
  background: var(--primary-light);
  color: var(--primary-color);
  transform: translateY(-2px);
}

.tool-link {
  display: inline-block;
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: all var(--transition-fast);
  padding: 0;
  font-size: 0.95rem;
  position: relative;
  margin-top: 1.5rem;
}

.tool-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: width var(--transition-fast);
}

.tool-link:hover::after {
  width: 100%;
}

.tool-link:hover {
  transform: translateX(4px);
}

/* CTA区域 */
.cta-section {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: var(--radius-lg);
  text-align: center;
  margin: 2rem 0;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(67, 56, 202, 0.06) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-section::after {
  content: '';
  position: absolute;
  bottom: -40%;
  left: -5%;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(67, 56, 202, 0.04) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-section h2 {
  font-size: 1.75rem;
  margin-bottom: 0.875rem;
  color: var(--text-primary);
  font-weight: 600;
  position: relative;
  z-index: 1;
}

.cta-section p {
  font-size: 1.05rem;
  margin-bottom: 1.75rem;
  color: var(--text-secondary);
  position: relative;
  z-index: 1;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.cta-btn {
  padding: 0.75rem 1.5rem;
  border-radius: 100px;
  font-weight: 500;
  text-decoration: none;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  position: relative;
  z-index: 1;
  overflow: hidden;
}

.cta-btn.primary {
  background: var(--primary-color);
  color: white;
  border: none;
  box-shadow: 0 4px 12px rgba(67, 56, 202, 0.3);
}

.cta-btn.primary::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.cta-btn.primary:hover::before {
  width: 300px;
  height: 300px;
}

.cta-btn.primary:hover {
  background: var(--primary-hover);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(67, 56, 202, 0.4);
}

.cta-btn.secondary {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--border-input);
  box-shadow: var(--shadow-sm);
}

.cta-btn.secondary:hover {
  background: var(--primary-light);
  border-color: var(--primary-color);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

/* 工具模态框 */
.tool-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 10000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.tool-modal.active {
  display: flex;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(5px);
}

.modal-content {
  position: relative;
  background: var(--card-bg);
  border-radius: var(--radius-xl);
  max-width: 900px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-md);
  animation: slideUp 0.3s ease;
  z-index: 1;
  border: 1px solid var(--border-color);
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--card-bg);
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  z-index: 10;
  box-shadow: var(--shadow-sm);
}

.modal-close:hover {
  background: var(--primary-light);
  border-color: var(--primary-color);
  transform: rotate(90deg);
}

.modal-body {
  padding: 2.5rem;
}

/* 工具内容样式 */
.tool-workspace {
  min-height: 400px;
}

.tool-workspace h2 {
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
  font-weight: 600;
}

.tool-workspace textarea,
.tool-workspace input[type="text"],
.tool-workspace input[type="number"] {
  width: 100%;
  padding: 0.95rem 1rem;
  border: 1px solid var(--border-input);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  color: var(--text-primary);
  background: #fbfaf6;
  margin-bottom: 1rem;
  transition: all var(--transition-fast);
}

.tool-workspace textarea {
  min-height: 150px;
  resize: vertical;
  font-family: 'Courier New', monospace;
}

.tool-workspace textarea:focus,
.tool-workspace input:focus {
  outline: none;
  border-color: var(--primary-color);
  background: white;
  box-shadow: 0 0 0 3px rgba(67, 56, 202, 0.1);
}

.tool-workspace button {
  padding: 0.95rem 1.2rem;
  border-radius: var(--radius-md);
  border: none;
  background: var(--primary-color);
  color: white;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-right: 0.5rem;
  margin-bottom: 0.5rem;
  box-shadow: 0 4px 12px rgba(67, 56, 202, 0.3);
  position: relative;
  overflow: hidden;
}

.tool-workspace button::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.tool-workspace button:hover::before {
  width: 300px;
  height: 300px;
}

.tool-workspace button:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(67, 56, 202, 0.4);
}

.tool-workspace button:active {
  transform: translateY(0);
}

.tool-result {
  margin-top: 1.5rem;
  padding: 1.25rem;
  background: var(--primary-light);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--primary-color);
  box-shadow: var(--shadow-sm);
}

.tool-result h3 {
  color: var(--primary-color);
  margin-bottom: 0.75rem;
  font-weight: 600;
  font-size: 1.05rem;
}

/* 工具模态框内容布局优化 */
.tool-header {
  margin-bottom: 2rem;
  text-align: center;
}

.tool-header h2 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.tool-intro {
  color: var(--text-secondary);
  font-size: 1rem;
}

.tool-textarea {
  width: 100%;
  min-height: 200px;
  padding: 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-family: 'Fira Code', 'Courier New', monospace;
  font-size: 0.9rem;
  background: var(--bg-secondary);
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  transition: all var(--transition-fast);
}

.tool-textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  background: var(--card-bg);
  box-shadow: 0 0 0 3px rgba(67, 56, 202, 0.1);
}

.tool-actions {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.tool-result-box {
  margin-top: 1.5rem;
  padding: 1.5rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  animation: fadeIn 0.3s ease;
}

.tool-pre {
  background: var(--card-bg);
  padding: 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  overflow-x: auto;
  font-family: 'Fira Code', 'Courier New', monospace;
  font-size: 0.9rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.btn-sm {
  padding: 0.5rem 1rem !important;
  font-size: 0.85rem !important;
}

.btn-lg {
  padding: 1rem 2rem !important;
  font-size: 1.1rem !important;
}

.btn-danger {
  background: #ef4444 !important;
}

.btn-danger:hover {
  background: #dc2626 !important;
}

/* 时间戳工具样式 */
.timestamp-display {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-color);
  font-family: 'Fira Code', monospace;
  margin: 1rem 0;
  text-align: center;
}

.tool-card-simple {
  background: var(--bg-secondary);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  margin-bottom: 2rem;
  text-align: center;
}

.tool-group {
  margin-bottom: 1.5rem;
}

.tool-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.input-with-btn {
  display: flex;
  gap: 0.5rem;
}

.tool-input {
  flex: 1;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.tool-result-text {
  margin-top: 0.75rem;
  padding: 1rem;
  background: var(--primary-light);
  color: var(--primary-color);
  border-radius: var(--radius-sm);
  font-family: 'Fira Code', monospace;
  font-weight: 600;
}

/* 颜色选择器 */
.color-picker-container {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 2rem;
  align-items: center;
}

.tool-color-input {
  width: 100%;
  height: 200px;
  padding: 0;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  background: none;
}

.color-values-grid {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.value-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.mono-text {
  font-family: 'Fira Code', monospace;
  font-weight: 600;
}

.copy-btn {
  background: none !important;
  box-shadow: none !important;
  padding: 0.25rem !important;
  margin: 0 !important;
  font-size: 1.2rem !important;
  opacity: 0.6;
  transition: opacity 0.2s !important;
}

.copy-btn:hover {
  opacity: 1;
  transform: scale(1.1);
  background: none !important;
}

/* 单位转换器 */
.unit-converter-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1.5rem;
  align-items: center;
}

.unit-col {
  display: flex;
  flex-direction: column;
}

.unit-separator {
  font-size: 2rem;
  color: var(--text-muted);
  margin-top: 1.5rem;
}

.mt-2 { margin-top: 0.5rem; }
.readonly { background: var(--bg-secondary) !important; cursor: not-allowed; }

/* 密码生成器 */
.options-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.result-display {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.result-text {
  font-size: 1.2rem;
  color: var(--primary-color);
  word-break: break-all;
}

/* 随机数 */
.random-numbers-container {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  max-height: 200px;
  overflow-y: auto;
  padding: 0.5rem;
}

.random-number-chip {
  padding: 0.4rem 0.8rem;
  background: var(--primary-color);
  color: white;
  border-radius: 4px;
  font-family: 'Fira Code', monospace;
  font-size: 0.9rem;
}

/* 文字统计 */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.stat-card {
  background: var(--bg-secondary);
  padding: 1.25rem;
  border-radius: var(--radius-md);
  text-align: center;
  border: 1px solid var(--border-color);
}

.stat-val {
  display: block;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* 屏幕信息 */
.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.info-item {
  display: flex;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.info-label { color: var(--text-secondary); font-size: 0.9rem; }
.info-val { font-weight: 600; color: var(--text-primary); }

/* 进制转换 */
.input-with-select {
  display: flex;
  gap: 0.5rem;
}

.input-with-select .tool-input { flex: 2; }
.input-with-select .tool-select { flex: 1; }

.base-results-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.base-item {
  background: var(--bg-secondary);
  padding: 1rem;
  border-radius: var(--radius-md);
}

.result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0.5rem;
}

/* 番茄钟 */
.pomodoro-workspace {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.timer-display {
  font-size: 6rem;
  font-weight: 800;
  font-family: 'Fira Code', monospace;
  color: var(--primary-color);
  margin: 2rem 0;
  text-shadow: 0 4px 12px rgba(67, 56, 202, 0.15);
}

.timer-controls {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
}

.timer-presets {
  display: flex;
  gap: 0.5rem;
}

/* 计算器 */
.calculator-container {
  max-width: 320px;
  margin: 0 auto;
  background: var(--bg-secondary);
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.calc-display {
  background: var(--card-bg);
  padding: 1rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  text-align: right;
  border: 1px solid var(--border-color);
}

.calc-exp {
  font-size: 0.9rem;
  color: var(--text-muted);
  min-height: 1.2rem;
  word-break: break-all;
}

.calc-res {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 0.5rem;
  word-break: break-all;
}

.calc-buttons {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
}

.btn-calc {
  width: 100%;
  aspect-ratio: 1;
  padding: 0 !important;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem !important;
  border-radius: var(--radius-md) !important;
  background: var(--card-bg) !important;
  color: var(--text-primary) !important;
  box-shadow: var(--shadow-sm) !important;
  border: 1px solid var(--border-color) !important;
}

.btn-calc:hover {
  background: var(--primary-light) !important;
  color: var(--primary-color) !important;
  transform: translateY(-2px);
}

.btn-op { color: var(--primary-color) !important; font-weight: 700 !important; }
.btn-special { color: var(--text-muted) !important; }

/* 响应式适配 */
@media (max-width: 640px) {
  .color-picker-container { grid-template-columns: 1fr; }
  .unit-converter-grid { grid-template-columns: 1fr; }
  .unit-separator { transform: rotate(90deg); margin: 0.5rem 0; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .info-grid { grid-template-columns: 1fr; }
  .base-results-grid { grid-template-columns: 1fr; }
  .timer-display { font-size: 4rem; }
}
@media (max-width: 768px) {
  .back-to-home-link {
    top: 1rem;
    left: 1rem;
    padding: 0.4rem 0.75rem;
    font-size: 0.85rem;
  }

  .hero-icon {
    width: 2.5rem;
    height: 2.5rem;
    font-size: 2.5rem;
  }

  .tools-hero {
    padding: 2.5rem 1.5rem;
  }

  .hero-stats {
    gap: 0.75rem;
  }

  .stat-item {
    padding: 0.875rem 1.25rem;
  }

  .stat-number {
    font-size: 1.5rem;
  }

  .tools-grid {
    grid-template-columns: 1fr;
  }

  .category-filter {
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 0.5rem;
  }

  .filter-btn {
    white-space: nowrap;
  }

  .modal-content {
    margin: 0.75rem;
    max-height: calc(100vh - 1.5rem);
    border-radius: var(--radius-lg);
  }

  .modal-body {
    padding: 1.5rem;
  }
}