/* DogAgeTool.org - Global Styles */
/* CSS Prefix: dag- */
/* Theme: Warm Brown Pet-Friendly */

:root {
  --dag-primary: #8B5E3C;
  --dag-primary-dark: #6B4A2F;
  --dag-primary-light: #A67B5B;
  --dag-secondary: #D4A574;
  --dag-accent: #E8C39E;
  --dag-bg: #FDF8F3;
  --dag-bg-alt: #F5EDE4;
  --dag-card: #FFFFFF;
  --dag-text: #3D2B1F;
  --dag-text-light: #6B5B4F;
  --dag-text-muted: #9B8B7F;
  --dag-border: #E0D5C8;
  --dag-border-light: #EDE6DD;
  --dag-success: #6B8E6B;
  --dag-warning: #C9A227;
  --dag-error: #B85450;
  --dag-shadow: 0 2px 8px rgba(61,43,31,0.08);
  --dag-shadow-lg: 0 4px 20px rgba(61,43,31,0.12);
  --dag-radius: 12px;
  --dag-radius-sm: 8px;
  --dag-font: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --dag-transition: all 0.25s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--dag-font);
  background: var(--dag-bg);
  color: var(--dag-text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

/* ===== Typography ===== */
.dag-h1 { font-size: 2.4rem; font-weight: 700; line-height: 1.2; color: var(--dag-text); margin-bottom: 1rem; }
.dag-h2 { font-size: 1.8rem; font-weight: 600; line-height: 1.3; color: var(--dag-text); margin: 2rem 0 1rem; }
.dag-h3 { font-size: 1.3rem; font-weight: 600; line-height: 1.4; color: var(--dag-text); margin: 1.5rem 0 0.75rem; }
.dag-h4 { font-size: 1.1rem; font-weight: 600; color: var(--dag-text); margin: 1rem 0 0.5rem; }
.dag-p { margin-bottom: 1rem; color: var(--dag-text-light); }
.dag-small { font-size: 0.85rem; color: var(--dag-text-muted); }
.dag-link { color: var(--dag-primary); text-decoration: none; transition: var(--dag-transition); }
.dag-link:hover { color: var(--dag-primary-dark); text-decoration: underline; }
.dag-strong { font-weight: 600; color: var(--dag-text); }
.dag-em { font-style: italic; color: var(--dag-text-light); }

/* ===== Layout ===== */
.dag-container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.dag-container-narrow { max-width: 800px; margin: 0 auto; padding: 0 24px; }
.dag-section { padding: 60px 0; }
.dag-section-alt { background: var(--dag-bg-alt); }

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

.dag-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.dag-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--dag-primary);
  text-decoration: none;
}

.dag-logo-icon {
  width: 36px;
  height: 36px;
  background: var(--dag-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.dag-nav { display: flex; gap: 28px; align-items: center; }

.dag-nav-link {
  color: var(--dag-text-light);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--dag-transition);
  padding: 6px 0;
  position: relative;
}

.dag-nav-link:hover { color: var(--dag-primary); }

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

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

.dag-nav-cta {
  background: var(--dag-primary);
  color: #fff;
  padding: 8px 18px;
  border-radius: var(--dag-radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: var(--dag-transition);
}

.dag-nav-cta:hover { background: var(--dag-primary-dark); transform: translateY(-1px); }

/* Mobile nav */
.dag-mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--dag-primary);
  cursor: pointer;
  padding: 8px;
}

@media (max-width: 768px) {
  .dag-mobile-toggle { display: block; }
  .dag-nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--dag-card);
    flex-direction: column;
    padding: 20px;
    gap: 16px;
    border-bottom: 1px solid var(--dag-border);
    box-shadow: var(--dag-shadow-lg);
    transform: translateY(-150%);
    transition: transform 0.3s ease;
  }
  .dag-nav.active { transform: translateY(0); }
  .dag-nav-link { font-size: 1.1rem; padding: 8px 0; width: 100%; }
  .dag-nav-cta { width: 100%; text-align: center; }
}

/* ===== Buttons ===== */
.dag-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--dag-radius-sm);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--dag-transition);
  border: none;
  text-decoration: none;
}

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

.dag-btn-primary:hover { background: var(--dag-primary-dark); transform: translateY(-2px); box-shadow: var(--dag-shadow-lg); }

.dag-btn-secondary {
  background: var(--dag-bg-alt);
  color: var(--dag-primary);
  border: 2px solid var(--dag-primary);
}

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

.dag-btn-small { padding: 8px 16px; font-size: 0.9rem; }

/* ===== Cards ===== */
.dag-card {
  background: var(--dag-card);
  border-radius: var(--dag-radius);
  border: 1px solid var(--dag-border);
  padding: 28px;
  transition: var(--dag-transition);
}

.dag-card:hover { box-shadow: var(--dag-shadow-lg); transform: translateY(-2px); }

.dag-card-featured {
  border: 2px solid var(--dag-secondary);
  position: relative;
}

.dag-card-featured::before {
  content: 'Featured';
  position: absolute;
  top: -1px;
  right: 20px;
  background: var(--dag-secondary);
  color: var(--dag-text);
  padding: 4px 12px;
  border-radius: 0 0 var(--dag-radius-sm) var(--dag-radius-sm);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.dag-card-icon {
  width: 56px;
  height: 56px;
  background: var(--dag-accent);
  border-radius: var(--dag-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 16px;
}

.dag-card-title { font-size: 1.2rem; font-weight: 700; color: var(--dag-text); margin-bottom: 8px; }
.dag-card-desc { color: var(--dag-text-light); font-size: 0.95rem; line-height: 1.6; }

/* ===== Tool Cards (首页展示) ===== */
.dag-tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.dag-tool-card {
  background: var(--dag-card);
  border-radius: var(--dag-radius);
  border: 1px solid var(--dag-border);
  padding: 32px;
  text-align: center;
  transition: var(--dag-transition);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
}

.dag-tool-card:hover {
  box-shadow: var(--dag-shadow-lg);
  transform: translateY(-4px);
  border-color: var(--dag-secondary);
}

.dag-tool-card-icon {
  width: 72px;
  height: 72px;
  background: var(--dag-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2rem;
  margin: 0 auto 20px;
}

.dag-tool-card-title { font-size: 1.3rem; font-weight: 700; color: var(--dag-text); margin-bottom: 10px; }
.dag-tool-card-desc { color: var(--dag-text-light); font-size: 0.95rem; margin-bottom: 16px; }
.dag-tool-card-meta { font-size: 0.8rem; color: var(--dag-text-muted); }

/* ===== Horizontal Tool List (随机展示形式2) ===== */
.dag-tool-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 40px;
}

.dag-tool-row {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--dag-card);
  border-radius: var(--dag-radius);
  border: 1px solid var(--dag-border);
  padding: 24px 28px;
  transition: var(--dag-transition);
  text-decoration: none;
  color: inherit;
}

.dag-tool-row:hover { box-shadow: var(--dag-shadow); border-color: var(--dag-secondary); }

.dag-tool-row-icon {
  width: 60px;
  height: 60px;
  background: var(--dag-accent);
  border-radius: var(--dag-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  flex-shrink: 0;
}

.dag-tool-row-content { flex: 1; }
.dag-tool-row-title { font-size: 1.15rem; font-weight: 700; color: var(--dag-text); margin-bottom: 4px; }
.dag-tool-row-desc { color: var(--dag-text-light); font-size: 0.9rem; }
.dag-tool-row-arrow { color: var(--dag-primary); font-size: 1.2rem; flex-shrink: 0; }

/* ===== Hero ===== */
.dag-hero {
  background: var(--dag-bg-alt);
  padding: 80px 0 60px;
  text-align: center;
  border-bottom: 1px solid var(--dag-border);
}

.dag-hero-title { font-size: 2.8rem; font-weight: 800; color: var(--dag-text); margin-bottom: 16px; line-height: 1.15; }
.dag-hero-subtitle { font-size: 1.2rem; color: var(--dag-text-light); max-width: 600px; margin: 0 auto 32px; }

/* ===== Ad Slots ===== */
.dag-ad-slot {
  display: none;
  border: 1px dashed var(--dag-border);
  border-radius: 16px;
  background: rgba(224,213,200,0.2);
  padding: 16px;
  margin: 30px 0;
  text-align: center;
  min-height: 120px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: var(--dag-transition);
}

.dag-ad-slot.has-content {
  display: flex;
  border-style: solid;
  border-color: var(--dag-border);
  background: var(--dag-card);
}

.dag-ad-label {
  font-size: 0.7rem;
  color: var(--dag-text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.dag-ad-placeholder {
  color: var(--dag-text-muted);
  font-size: 0.85rem;
}

/* ===== Blog Cards ===== */
.dag-blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
  margin-top: 32px;
}

.dag-blog-card {
  background: var(--dag-card);
  border-radius: var(--dag-radius);
  border: 1px solid var(--dag-border);
  overflow: hidden;
  transition: var(--dag-transition);
  text-decoration: none;
  color: inherit;
  display: block;
}

.dag-blog-card:hover { box-shadow: var(--dag-shadow-lg); transform: translateY(-3px); }

.dag-blog-card-img {
  width: 100%;
  height: 180px;
  background: var(--dag-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  border-bottom: 1px solid var(--dag-border);
}

.dag-blog-card-body { padding: 20px; }
.dag-blog-card-tag {
  display: inline-block;
  background: var(--dag-accent);
  color: var(--dag-primary-dark);
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 10px;
}
.dag-blog-card-title { font-size: 1.1rem; font-weight: 700; color: var(--dag-text); margin-bottom: 8px; line-height: 1.4; }
.dag-blog-card-excerpt { color: var(--dag-text-light); font-size: 0.9rem; line-height: 1.5; margin-bottom: 12px; }
.dag-blog-card-meta { display: flex; align-items: center; gap: 12px; font-size: 0.8rem; color: var(--dag-text-muted); }

/* ===== Article Page ===== */
.dag-article-header {
  padding: 60px 0 30px;
  border-bottom: 1px solid var(--dag-border);
  margin-bottom: 40px;
}

.dag-article-title { font-size: 2.2rem; font-weight: 800; color: var(--dag-text); margin-bottom: 16px; line-height: 1.2; }
.dag-article-meta { display: flex; align-items: center; gap: 16px; color: var(--dag-text-muted); font-size: 0.9rem; flex-wrap: wrap; }
.dag-article-meta-sep { color: var(--dag-border); }

.dag-article-content {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--dag-text-light);
}

.dag-article-content h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--dag-text);
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--dag-border-light);
}

.dag-article-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--dag-text);
  margin: 2rem 0 0.75rem;
}

.dag-article-content p { margin-bottom: 1.2rem; }

.dag-article-content ul, .dag-article-content ol {
  margin: 1rem 0 1.5rem 1.5rem;
}

.dag-article-content li { margin-bottom: 0.5rem; }

.dag-article-content blockquote {
  border-left: 4px solid var(--dag-secondary);
  padding-left: 20px;
  margin: 1.5rem 0;
  color: var(--dag-text-light);
  font-style: italic;
}

.dag-article-content strong { color: var(--dag-text); font-weight: 600; }

.dag-article-content a { color: var(--dag-primary); text-decoration: underline; text-underline-offset: 3px; }
.dag-article-content a:hover { color: var(--dag-primary-dark); }

/* ===== Tool Recommendation Card (文章内插入) ===== */
.dag-tool-rec {
  background: var(--dag-bg-alt);
  border: 2px solid var(--dag-secondary);
  border-radius: var(--dag-radius);
  padding: 24px;
  margin: 2rem 0;
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.dag-tool-rec-icon {
  width: 48px;
  height: 48px;
  background: var(--dag-primary);
  border-radius: var(--dag-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.dag-tool-rec-content { flex: 1; }
.dag-tool-rec-title { font-weight: 700; color: var(--dag-text); margin-bottom: 4px; }
.dag-tool-rec-desc { font-size: 0.9rem; color: var(--dag-text-light); margin-bottom: 10px; }
.dag-tool-rec-link { font-size: 0.9rem; font-weight: 600; color: var(--dag-primary); }

/* ===== Internal Link Box ===== */
.dag-internal-link {
  background: var(--dag-card);
  border: 1px solid var(--dag-border);
  border-radius: var(--dag-radius);
  padding: 20px;
  margin: 2rem 0;
}

.dag-internal-link-title { font-weight: 700; color: var(--dag-text); margin-bottom: 12px; font-size: 1rem; }
.dag-internal-link-list { list-style: none; margin: 0; padding: 0; }
.dag-internal-link-list li { margin-bottom: 8px; }
.dag-internal-link-list a { color: var(--dag-primary); text-decoration: none; font-size: 0.95rem; }
.dag-internal-link-list a:hover { text-decoration: underline; }

/* ===== Author Box ===== */
.dag-author-box {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: var(--dag-bg-alt);
  border-radius: var(--dag-radius);
  padding: 24px;
  margin: 3rem 0 2rem;
  border: 1px solid var(--dag-border);
}

.dag-author-avatar {
  width: 56px;
  height: 56px;
  background: var(--dag-secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.dag-author-info { flex: 1; }
.dag-author-name { font-weight: 700; color: var(--dag-text); margin-bottom: 4px; }
.dag-author-role { font-size: 0.85rem; color: var(--dag-text-muted); margin-bottom: 8px; }
.dag-author-bio { font-size: 0.9rem; color: var(--dag-text-light); line-height: 1.5; }

/* ===== Footer ===== */
.dag-footer {
  background: var(--dag-text);
  color: var(--dag-bg-alt);
  padding: 48px 0 24px;
  margin-top: 60px;
}

.dag-footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
  margin-bottom: 32px;
}

.dag-footer-title { font-weight: 700; color: var(--dag-accent); margin-bottom: 16px; font-size: 1rem; }
.dag-footer-links { list-style: none; padding: 0; }
.dag-footer-links li { margin-bottom: 10px; }
.dag-footer-links a { color: var(--dag-bg-alt); opacity: 0.8; text-decoration: none; font-size: 0.9rem; transition: var(--dag-transition); }
.dag-footer-links a:hover { opacity: 1; color: var(--dag-accent); }

.dag-footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
}

/* ===== Forms / Inputs ===== */
.dag-form-group { margin-bottom: 20px; }
.dag-label { display: block; font-weight: 600; color: var(--dag-text); margin-bottom: 6px; font-size: 0.95rem; }
.dag-input, .dag-select, .dag-textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--dag-border);
  border-radius: var(--dag-radius-sm);
  font-size: 1rem;
  font-family: var(--dag-font);
  color: var(--dag-text);
  background: var(--dag-card);
  transition: var(--dag-transition);
}

.dag-input:focus, .dag-select:focus, .dag-textarea:focus {
  outline: none;
  border-color: var(--dag-primary);
  box-shadow: 0 0 0 3px rgba(139,94,60,0.1);
}

.dag-textarea { min-height: 120px; resize: vertical; }

/* ===== Calculator Specific ===== */
.dag-calc-container {
  background: var(--dag-card);
  border-radius: var(--dag-radius);
  border: 2px solid var(--dag-border);
  padding: 32px;
  max-width: 600px;
  margin: 0 auto;
}

.dag-calc-result {
  background: var(--dag-bg-alt);
  border-radius: var(--dag-radius);
  padding: 24px;
  text-align: center;
  margin-top: 24px;
  border: 2px solid var(--dag-secondary);
}

.dag-calc-result-number { font-size: 3rem; font-weight: 800; color: var(--dag-primary); line-height: 1; }
.dag-calc-result-label { font-size: 0.9rem; color: var(--dag-text-muted); margin-top: 8px; }

.dag-calc-actions {
  display: flex;
  gap: 12px;
  margin-top: 20px;
  flex-wrap: wrap;
  justify-content: center;
}

/* ===== Share / Save Buttons ===== */
.dag-share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: var(--dag-bg-alt);
  border: 1px solid var(--dag-border);
  border-radius: var(--dag-radius-sm);
  font-size: 0.85rem;
  color: var(--dag-text-light);
  cursor: pointer;
  transition: var(--dag-transition);
}

.dag-share-btn:hover { background: var(--dag-border-light); color: var(--dag-text); }

/* ===== Breadcrumb ===== */
.dag-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--dag-text-muted);
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.dag-breadcrumb a { color: var(--dag-text-muted); text-decoration: none; }
.dag-breadcrumb a:hover { color: var(--dag-primary); }

/* ===== Pagination ===== */
.dag-pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
}

.dag-pagination-btn {
  padding: 8px 16px;
  border: 1px solid var(--dag-border);
  border-radius: var(--dag-radius-sm);
  background: var(--dag-card);
  color: var(--dag-text-light);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--dag-transition);
}

.dag-pagination-btn:hover { background: var(--dag-bg-alt); color: var(--dag-primary); }
.dag-pagination-btn.active { background: var(--dag-primary); color: #fff; border-color: var(--dag-primary); }

/* ===== Utility ===== */
.dag-text-center { text-align: center; }
.dag-mt-1 { margin-top: 1rem; }
.dag-mt-2 { margin-top: 2rem; }
.dag-mb-1 { margin-bottom: 1rem; }
.dag-mb-2 { margin-bottom: 2rem; }
.dag-hidden { display: none !important; }
.dag-flex { display: flex; }
.dag-flex-wrap { flex-wrap: wrap; }
.dag-gap-2 { gap: 16px; }
.dag-items-center { align-items: center; }
.dag-justify-between { justify-content: space-between; }

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--dag-bg); }
::-webkit-scrollbar-thumb { background: var(--dag-border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--dag-text-muted); }

/* ===== Print ===== */
@media print {
  .dag-header, .dag-footer,   body { background: #fff; }
  .dag-article-content { font-size: 12pt; line-height: 1.6; }
}