/* ===========================
   效率盒子 - 共享样式表
   =========================== */

:root {
  --primary: #4f46e5;
  --primary-light: #6366f1;
  --primary-dark: #4338ca;
  --primary-bg: #eef2ff;
  --text: #1e293b;
  --text-light: #64748b;
  --text-lighter: #94a3b8;
  --bg: #f8fafc;
  --card-bg: #ffffff;
  --border: #e2e8f0;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --max-width: 960px;
  --transition: 0.2s ease;
}

/* Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* 价格鉴证评估技术专栏 - 滚动条 */
.spec-marquee {
  margin: 0 auto 16px;
  max-width: 640px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 7px 16px;
  white-space: nowrap;
  box-shadow: inset 0 1px 2px rgba(0,0,0,0.04);
}
.spec-marquee .track {
  display: inline-block;
  padding-left: 100%;
  animation: specMarquee 10s linear infinite;
}
.spec-marquee .track span {
  display: inline-block;
  padding-right: 50px;
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 500;
}
.spec-marquee:hover .track {
  animation-play-state: paused;
}
@keyframes specMarquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-100%); }
}
@media (max-width: 480px) {
  .spec-marquee .track span { font-size: 12px; }
  .spec-marquee .track { animation-duration: 8s; }
}

/* Container - 通用内容容器（限宽+居中+左右内边距） */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  width: 100%;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial,
    sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--primary-dark);
}

/* Header */
.site-header {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
}

.logo:hover {
  color: var(--text);
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
}

.nav-links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.nav-links a {
  color: var(--text-light);
  font-size: 14px;
  font-weight: 500;
  transition: color var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
}

/* Main content */
.main-content {
  flex: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 32px 20px;
  width: 100%;
}

/* Hero section (homepage) */
.hero {
  text-align: center;
  padding: 48px 0 32px;
}

.hero h1 {
  font-size: 32px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

.hero p {
  font-size: 16px;
  color: var(--text-light);
  max-width: 520px;
  margin: 0 auto;
}

/* Tool grid */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin-top: 32px;
}

.tool-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  transition: all var(--transition);
  display: block;
  color: var(--text);
}

.tool-card:hover {
  color: var(--text);
  border-color: var(--primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.tool-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--primary-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
  font-size: 24px;
}

.tool-card h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
}

.tool-card p {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.4;
}

/* Tool page layout */
.tool-header {
  margin-bottom: 24px;
}

.tool-header h1 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.tool-header p {
  font-size: 14px;
  color: var(--text-light);
}

.tool-box {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

/* Form elements */
textarea, input[type="text"], input[type="number"], input[type="url"] {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: "SF Mono", "Fira Code", "Fira Mono", "Consolas", monospace;
  color: var(--text);
  background: var(--bg);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

textarea {
  min-height: 160px;
  resize: vertical;
  line-height: 1.6;
}

textarea:focus, input:focus {
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
  background: #fff;
}

input[type="number"] {
  font-family: inherit;
}

label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.form-group {
  margin-bottom: 20px;
}

.form-row {
  display: flex;
  gap: 12px;
  align-items: flex-end;
  flex-wrap: wrap;
}

.form-row .form-group {
  flex: 1;
  min-width: 120px;
  margin-bottom: 20px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 24px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
  white-space: nowrap;
}

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

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

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

.btn-secondary:hover {
  background: #cbd5e1;
}

.btn-success {
  background: var(--success);
  color: #fff;
}

.btn-success:hover {
  background: #059669;
  color: #fff;
}

.btn-sm {
  padding: 6px 14px;
  font-size: 13px;
}

.btn-block {
  width: 100%;
}

/* Results */
.result-area {
  margin-top: 20px;
  padding: 16px;
  background: var(--primary-bg);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text);
  word-break: break-all;
  min-height: 48px;
  display: flex;
  align-items: center;
}

.result-area.empty {
  color: var(--text-lighter);
  justify-content: center;
}

.result-area.error {
  background: #fef2f2;
  color: var(--danger);
}

/* Stats display */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
  margin-top: 20px;
}

.stat-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  text-align: center;
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
}

.stat-label {
  font-size: 13px;
  color: var(--text-light);
  margin-top: 6px;
}

/* Checkbox group */
.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  cursor: pointer;
}

.checkbox-item input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
  cursor: pointer;
}

/* Range slider */
input[type="range"] {
  width: 100%;
  accent-color: var(--primary);
  cursor: pointer;
}

.range-value {
  display: inline-block;
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  min-width: 40px;
  text-align: right;
}

/* Color preview */
.color-preview {
  width: 100%;
  height: 80px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  margin-top: 12px;
}

/* QR code display */
#qrcode {
  display: flex;
  justify-content: center;
  padding: 20px;
  min-height: 200px;
}

#qrcode:empty::after {
  content: "输入内容后点击生成按钮";
  color: var(--text-lighter);
  font-size: 14px;
}

/* Ad zone */
.ad-zone {
  margin: 32px 0;
  padding: 16px;
  background: var(--card-bg);
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  text-align: center;
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ad-zone-label {
  font-size: 12px;
  color: var(--text-lighter);
}

/* Related tools */
.related-tools {
  margin-top: 40px;
}

.related-tools h2 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 16px;
}

.related-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.related-grid a {
  display: inline-block;
  padding: 6px 14px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 13px;
  color: var(--text-light);
  transition: all var(--transition);
}

.related-grid a:hover {
  border-color: var(--primary-light);
  color: var(--primary);
  background: var(--primary-bg);
}

/* Footer */
.site-footer {
  background: var(--card-bg);
  border-top: 1px solid var(--border);
  padding: 24px 20px;
  text-align: center;
  color: var(--text-light);
  font-size: 13px;
}

.site-footer a {
  color: var(--text-light);
}

.site-footer a:hover {
  color: var(--primary);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 8px;
}

/* Toast notification */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--text);
  color: #fff;
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  z-index: 1000;
  opacity: 0;
  transition: all 0.3s ease;
}

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

/* Responsive */
@media (max-width: 640px) {
  .hero h1 {
    font-size: 24px;
  }

  .hero p {
    font-size: 14px;
  }

  .tool-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .tool-card {
    padding: 16px 12px;
  }

  .tool-card-icon {
    width: 40px;
    height: 40px;
    font-size: 20px;
  }

  .tool-card h3 {
    font-size: 13px;
  }

  .tool-card p {
    font-size: 12px;
  }

  .nav-links {
    gap: 16px;
  }

  .nav-links a {
    font-size: 13px;
  }

  .tool-box {
    padding: 20px 16px;
  }

  .tool-header h1 {
    font-size: 22px;
  }

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

  .header-inner {
    padding: 0 16px;
  }

  .main-content {
    padding: 20px 16px;
  }

  .logo {
    font-size: 18px;
  }
}

@media (max-width: 380px) {
  .tool-grid {
    grid-template-columns: 1fr;
  }

  .nav-links {
    gap: 12px;
  }
}