/* ============================================
   CatCalorieTool.org — Global Styles
   Prefix: cct-
   Version: 6.1
   ============================================ */

:root {
  --cct-primary: #e07a5f;
  --cct-primary-dark: #c45d3f;
  --cct-secondary: #3d405b;
  --cct-accent: #81b29a;
  --cct-warm: #f2cc8f;
  --cct-bg: #fefae0;
  --cct-card: #ffffff;
  --cct-text: #2d3436;
  --cct-text-light: #636e72;
  --cct-border: #dfe6e9;
  --cct-shadow: rgba(0,0,0,0.08);
  --cct-radius: 12px;
  --cct-radius-sm: 8px;
  --cct-font: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --cct-font-mono: 'SF Mono', Monaco, monospace;
}

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

body {
  font-family: var(--cct-font);
  background: var(--cct-bg);
  color: var(--cct-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.cct-container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.cct-container-sm { max-width: 800px; margin: 0 auto; padding: 0 24px; }

.cct-nav {
  background: var(--cct-card);
  border-bottom: 2px solid var(--cct-border);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}
.cct-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.cct-logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--cct-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}
.cct-logo-icon { font-size: 1.6rem; }
.cct-nav-links { display: flex; gap: 32px; align-items: center; }
.cct-nav-links a {
  color: var(--cct-text-light);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s;
}
.cct-nav-links a:hover { color: var(--cct-primary); }
.cct-nav-links a.cct-active { color: var(--cct-primary); font-weight: 600; }

.cct-hero {
  padding: 60px 0 40px;
  text-align: center;
  background: linear-gradient(135deg, var(--cct-bg) 0%, #fff5eb 100%);
}
.cct-hero-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--cct-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  margin-bottom: 16px;
  box-shadow: 0 4px 16px rgba(224,122,95,0.3);
}
.cct-hero h1 {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--cct-secondary);
  margin-bottom: 12px;
  line-height: 1.2;
}
.cct-hero-sub {
  font-size: 1.15rem;
  color: var(--cct-text-light);
  max-width: 600px;
  margin: 0 auto;
}

.cct-tools-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  grid-template-rows: auto auto;
  gap: 24px;
  padding: 40px 0;
}
.cct-tool-card {
  background: var(--cct-card);
  border-radius: var(--cct-radius);
  padding: 32px;
  box-shadow: 0 2px 12px var(--cct-shadow);
  transition: transform 0.2s, box-shadow 0.2s;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
  position: relative;
  overflow: hidden;
}
.cct-tool-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}
.cct-tool-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--cct-primary);
}
.cct-tool-card.cct-accent-green::before { background: var(--cct-accent); }
.cct-tool-card.cct-accent-warm::before { background: var(--cct-warm); }
.cct-tool-card.cct-accent-dark::before { background: var(--cct-secondary); }

.cct-tool-card-large {
  grid-row: span 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.cct-tool-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}
.cct-tool-card h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--cct-secondary);
  margin-bottom: 8px;
}
.cct-tool-card p {
  color: var(--cct-text-light);
  font-size: 0.95rem;
  line-height: 1.5;
}
.cct-tool-meta {
  margin-top: 16px;
  display: flex;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--cct-text-light);
}
.cct-tool-tag {
  background: var(--cct-bg);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--cct-primary-dark);
}

.cct-preview-bar {
  height: 8px;
  background: var(--cct-border);
  border-radius: 4px;
  margin-top: 20px;
  overflow: hidden;
  position: relative;
}
.cct-preview-bar::after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 60%;
  background: linear-gradient(90deg, var(--cct-primary), var(--cct-warm));
  border-radius: 4px;
  animation: cct-slide 3s ease-in-out infinite;
}
@keyframes cct-slide {
  0%, 100% { width: 30%; }
  50% { width: 75%; }
}

.cct-blog-section {
  padding: 40px 0 60px;
}
.cct-section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}
.cct-section-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--cct-secondary);
}
.cct-section-header a {
  color: var(--cct-primary);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
}
.cct-blog-scroll {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  padding-bottom: 16px;
  scroll-snap-type: x mandatory;
}
.cct-blog-scroll::-webkit-scrollbar { height: 6px; }
.cct-blog-scroll::-webkit-scrollbar-track { background: var(--cct-border); border-radius: 3px; }
.cct-blog-scroll::-webkit-scrollbar-thumb { background: var(--cct-primary); border-radius: 3px; }

.cct-blog-card {
  min-width: 300px;
  max-width: 300px;
  background: var(--cct-card);
  border-radius: var(--cct-radius);
  padding: 24px;
  box-shadow: 0 2px 8px var(--cct-shadow);
  scroll-snap-align: start;
  flex-shrink: 0;
}
.cct-blog-card-date {
  font-size: 0.8rem;
  color: var(--cct-primary);
  font-weight: 600;
  margin-bottom: 8px;
}
.cct-blog-card h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--cct-secondary);
  margin-bottom: 8px;
  line-height: 1.3;
}
.cct-blog-card p {
  font-size: 0.9rem;
  color: var(--cct-text-light);
  line-height: 1.5;
}
.cct-blog-card-tag {
  display: inline-block;
  margin-top: 12px;
  font-size: 0.75rem;
  background: var(--cct-bg);
  padding: 4px 10px;
  border-radius: 12px;
  color: var(--cct-text-light);
}

.cct-tool-page {
  padding: 40px 0;
}
.cct-tool-header {
  text-align: center;
  margin-bottom: 40px;
}
.cct-tool-header h1 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--cct-secondary);
}
.cct-tool-header p {
  color: var(--cct-text-light);
  margin-top: 8px;
}

.cct-tool-panel {
  background: var(--cct-card);
  border-radius: var(--cct-radius);
  padding: 32px;
  box-shadow: 0 2px 12px var(--cct-shadow);
  margin-bottom: 24px;
}

.cct-input-group {
  margin-bottom: 20px;
}
.cct-input-group label {
  display: block;
  font-weight: 600;
  color: var(--cct-secondary);
  margin-bottom: 6px;
  font-size: 0.9rem;
}
.cct-input-group input,
.cct-input-group select {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--cct-border);
  border-radius: var(--cct-radius-sm);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.2s;
}
.cct-input-group input:focus,
.cct-input-group select:focus {
  outline: none;
  border-color: var(--cct-primary);
}

.cct-btn {
  display: inline-block;
  padding: 14px 28px;
  background: var(--cct-primary);
  color: white;
  border: none;
  border-radius: var(--cct-radius-sm);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}
.cct-btn:hover { background: var(--cct-primary-dark); }
.cct-btn:active { transform: scale(0.98); }
.cct-btn-secondary {
  background: var(--cct-secondary);
}
.cct-btn-secondary:hover { background: #2d3047; }
.cct-btn-outline {
  background: transparent;
  border: 2px solid var(--cct-primary);
  color: var(--cct-primary);
}
.cct-btn-outline:hover { background: var(--cct-primary); color: white; }

.cct-result-box {
  background: linear-gradient(135deg, #fff5eb 0%, var(--cct-bg) 100%);
  border: 2px solid var(--cct-warm);
  border-radius: var(--cct-radius);
  padding: 24px;
  margin-top: 24px;
}
.cct-result-box h3 {
  color: var(--cct-primary-dark);
  font-size: 1.1rem;
  margin-bottom: 12px;
}
.cct-result-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--cct-primary);
  font-family: var(--cct-font-mono);
}
.cct-result-unit {
  font-size: 1rem;
  color: var(--cct-text-light);
  margin-left: 4px;
}

.cct-history-panel {
  background: var(--cct-card);
  border-radius: var(--cct-radius);
  padding: 24px;
  margin-top: 24px;
}
.cct-history-panel h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--cct-secondary);
  margin-bottom: 16px;
}
.cct-history-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: var(--cct-bg);
  border-radius: var(--cct-radius-sm);
  margin-bottom: 8px;
  font-size: 0.9rem;
}
.cct-history-item-name { font-weight: 600; color: var(--cct-secondary); }
.cct-history-item-val { color: var(--cct-primary); font-weight: 700; }

.cct-share-box {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  flex-wrap: wrap;
}
.cct-share-box input {
  flex: 1;
  min-width: 200px;
  padding: 10px 14px;
  border: 2px solid var(--cct-border);
  border-radius: var(--cct-radius-sm);
  font-size: 0.9rem;
}

.cct-article-header {
  padding: 40px 0 20px;
  border-bottom: 2px solid var(--cct-border);
  margin-bottom: 32px;
}
.cct-article-header h1 {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--cct-secondary);
  line-height: 1.2;
  margin-bottom: 16px;
}
.cct-article-meta {
  display: flex;
  gap: 20px;
  color: var(--cct-text-light);
  font-size: 0.9rem;
}
.cct-article-body {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--cct-text);
}
.cct-article-body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--cct-secondary);
  margin: 40px 0 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--cct-warm);
}
.cct-article-body h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--cct-secondary);
  margin: 28px 0 12px;
}
.cct-article-body p { margin-bottom: 20px; }
.cct-article-body ul, .cct-article-body ol {
  margin: 16px 0 16px 24px;
}
.cct-article-body li { margin-bottom: 8px; }
.cct-article-body strong { color: var(--cct-primary-dark); }

.cct-tool-rec {
  background: linear-gradient(135deg, var(--cct-bg) 0%, #fff 100%);
  border: 2px solid var(--cct-accent);
  border-radius: var(--cct-radius);
  padding: 24px;
  margin: 32px 0;
}
.cct-tool-rec h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--cct-secondary);
  margin-bottom: 8px;
}
.cct-tool-rec p {
  font-size: 0.95rem;
  color: var(--cct-text-light);
  margin-bottom: 12px;
}
.cct-tool-rec a {
  display: inline-block;
  color: var(--cct-accent);
  font-weight: 700;
  text-decoration: none;
}
.cct-tool-rec a:hover { text-decoration: underline; }

.cct-internal-link {
  background: var(--cct-bg);
  border-left: 4px solid var(--cct-primary);
  padding: 16px 20px;
  margin: 24px 0;
  border-radius: 0 var(--cct-radius-sm) var(--cct-radius-sm) 0;
}
.cct-internal-link a {
  color: var(--cct-primary-dark);
  font-weight: 600;
  text-decoration: none;
}
.cct-internal-link a:hover { text-decoration: underline; }

/* 广告位 - 默认隐藏，有内容时显示 */
.cct-ad-slot {
  display: none;
  margin: 24px 0;
  text-align: center;
  min-height: 90px;
  align-items: center;
  justify-content: center;
  background: var(--cct-bg);
  border-radius: var(--cct-radius-sm);
  border: 1px dashed var(--cct-border);
}
.cct-ad-slot.has-content {
  display: flex;
  border: none;
  background: transparent;
}

.cct-footer {
  background: var(--cct-secondary);
  color: #b2bec3;
  padding: 48px 0 24px;
  margin-top: 60px;
}
.cct-footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.cct-footer-brand {
  font-size: 1.3rem;
  font-weight: 800;
  color: white;
  margin-bottom: 12px;
}
.cct-footer-desc {
  font-size: 0.9rem;
  line-height: 1.6;
  color: #b2bec3;
}
.cct-footer h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: white;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.cct-footer-links { list-style: none; }
.cct-footer-links li { margin-bottom: 10px; }
.cct-footer-links a {
  color: #b2bec3;
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}
.cct-footer-links a:hover { color: var(--cct-primary); }
.cct-footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  margin-top: 32px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  color: #636e72;
}

@media (max-width: 768px) {
  .cct-tools-grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }
  .cct-tool-card-large { grid-row: auto; }
  .cct-footer-grid { grid-template-columns: 1fr 1fr; }
  .cct-nav-links { gap: 16px; font-size: 0.85rem; }
  .cct-hero h1 { font-size: 1.8rem; }
  .cct-blog-scroll { gap: 12px; }
  .cct-blog-card { min-width: 260px; }
}

@media (max-width: 480px) {
  .cct-footer-grid { grid-template-columns: 1fr; }
  .cct-nav-links { display: none; }
  .cct-tool-card { padding: 20px; }
}