/* ============================================
   Wisdom Stories — Ancient Chinese Parables
   "纸墨生辉" Design System
   Matches yiqidao.com/tales/ visual language
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  --ink-cyan: #2C3E50;
  --paper-white: #F5F1E8;
  --paper-warm: #EDE8DC;
  --paper-deep: #E5DFD2;
  --candle-yellow: #D4A574;
  --indigo: #5B8A72;
  --cinnabar: #C73E3A;
  --ink-light: rgba(44,62,80,0.85);
  --ink-faint: rgba(44,62,80,0.15);
  --ink-border: rgba(44,62,80,0.12);
  --candle-glow: rgba(212,165,116,0.15);
  --shadow-soft: rgba(44,62,80,0.08);
  --shadow-medium: rgba(44,62,80,0.15);

  --font-serif-cn: 'Noto Serif SC','Source Han Serif SC','SimSun',serif;
  --font-serif-en: 'Crimson Text','Georgia',serif;
  --font-display-en: 'Cinzel','Georgia',serif;
  --font-sans-cn: 'Noto Sans SC','Source Han Sans SC','Microsoft YaHei',sans-serif;
  --font-sans-en: 'Inter','Helvetica Neue',sans-serif;

  --max-width: 1280px;
  --transition-fast: 0.2s cubic-bezier(0.4,0,0.2,1);
  --transition-normal: 0.3s cubic-bezier(0.4,0,0.2,1);
}

/* --- Reset --- */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{font-size:16px;scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body{
  font-family:var(--font-serif-cn);
  color:var(--ink-cyan);
  background-color:var(--paper-white);
  line-height:1.8;
  overflow-x:hidden;
}
a{color:var(--indigo);text-decoration:none;transition:color var(--transition-fast)}
a:hover{color:var(--candle-yellow)}
img{max-width:100%;height:auto;display:block}

.container{max-width:var(--max-width);margin:0 auto;padding:0 2rem}

/* --- Navigation --- */
.site-nav{
  background:var(--ink-cyan);
  color:var(--paper-white);
  position:sticky;top:0;z-index:100;
  box-shadow:0 2px 0 0 var(--ink-cyan);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:64px;max-width:var(--max-width);margin:0 auto;padding:0 2rem;
}
.nav-brand{
  display:flex;align-items:center;gap:.5rem;
  color:var(--paper-white);
  font-family:var(--font-serif-cn);font-size:1.25rem;font-weight:600;letter-spacing:.08em;
}
.nav-brand .seal{
  width:36px;height:36px;
  border:2px solid var(--cinnabar);
  display:flex;align-items:center;justify-content:center;
  font-size:.75rem;color:var(--cinnabar);font-weight:700;
  transform:rotate(-3deg);
}
.nav-links{display:flex;list-style:none;gap:2rem;align-items:center}
.nav-links a{
  color:var(--paper-white);
  font-family:var(--font-sans-cn);font-size:.9rem;letter-spacing:.05em;
  opacity:.85;transition:opacity var(--transition-fast);
}
.nav-links a:hover{opacity:1;color:var(--candle-yellow)}
.nav-hamburger{
  display:none;background:none;border:none;color:var(--paper-white);
  font-size:1.5rem;cursor:pointer;
}
@media(max-width:768px){
  .nav-hamburger{display:block}
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;
    background:var(--ink-cyan);flex-direction:column;padding:1rem 2rem;gap:1rem}
  .nav-links.open{display:flex}
}

/* --- Hero --- */
.page-hero{
  text-align:center;
  padding:80px 2rem 60px;
  background:
    radial-gradient(ellipse at 30% 40%,rgba(212,165,116,0.06) 0%,transparent 60%),
    var(--paper-white);
}
.page-hero .hero-tag{
  font-family:var(--font-sans-en);font-size:.75rem;font-weight:600;
  letter-spacing:3px;text-transform:uppercase;
  color:var(--candle-yellow);margin-bottom:16px;
}
.page-hero h1{
  font-family:var(--font-display-en);
  font-size:clamp(1.8rem,4vw,3rem);font-weight:700;
  color:var(--ink-cyan);line-height:1.2;margin-bottom:12px;
}
.page-hero h1 em{font-style:italic;color:var(--candle-yellow)}
.page-hero .subtitle{
  font-family:var(--font-serif-en);font-style:italic;
  font-size:1.05rem;color:rgba(44,62,80,0.5);max-width:600px;margin:0 auto 16px;
}
.page-hero .cn-quote{
  font-family:var(--font-serif-cn);font-size:1rem;
  color:var(--candle-yellow);opacity:.6;margin-top:20px;
}

/* --- Ink Divider --- */
.ink-divider{
  width:60px;height:1px;
  background:linear-gradient(90deg,transparent,var(--ink-cyan),transparent);
  margin:1.5rem auto;opacity:.3;
}

/* --- Theme Filter --- */
.theme-filter{
  display:flex;flex-wrap:wrap;justify-content:center;gap:10px;
  margin:40px 0 48px;
}
.theme-btn{
  font-family:var(--font-sans-en);font-size:.8rem;font-weight:500;
  padding:8px 18px;border-radius:20px;
  border:1px solid var(--ink-border);
  background:transparent;color:rgba(44,62,80,0.6);cursor:pointer;
  transition:all var(--transition-normal);letter-spacing:.5px;
}
.theme-btn:hover,.theme-btn.active{
  background:var(--candle-glow);border-color:rgba(212,165,116,0.4);
  color:var(--candle-yellow);
}

/* --- Stories Grid --- */
.stories-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(340px,1fr));
  gap:28px;
}
@media(max-width:400px){.stories-grid{grid-template-columns:1fr}}

/* --- Story Card (Index) --- */
.story-card{
  background:var(--paper-warm);
  border:1px solid var(--ink-border);
  border-radius:8px;
  padding:28px 24px 24px;
  transition:all var(--transition-normal);
  position:relative;overflow:hidden;
}
.story-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,transparent,var(--candle-yellow),transparent);
  opacity:0;transition:opacity var(--transition-normal);
}
.story-card:hover{
  border-color:rgba(212,165,116,0.3);
  transform:translateY(-3px);
  box-shadow:0 8px 30px var(--shadow-soft);
}
.story-card:hover::before{opacity:1}

.card-theme{
  display:inline-block;
  font-family:var(--font-sans-en);font-size:.7rem;font-weight:600;
  letter-spacing:1.5px;text-transform:uppercase;
  color:var(--candle-yellow);margin-bottom:12px;
  padding:3px 10px;border:1px solid rgba(212,165,116,0.25);border-radius:4px;
}
.card-cn-title{
  font-family:var(--font-serif-cn);font-size:1.5rem;font-weight:700;
  color:var(--ink-cyan);margin-bottom:4px;line-height:1.3;
}
.card-en-title{
  font-family:var(--font-display-en);font-size:1.1rem;font-weight:600;
  color:rgba(44,62,80,0.8);margin-bottom:12px;line-height:1.3;
}
.card-source{
  font-family:var(--font-sans-en);font-size:.75rem;
  color:rgba(44,62,80,0.4);margin-bottom:14px;
}
.card-excerpt{
  font-family:var(--font-serif-en);font-size:.95rem;
  color:rgba(44,62,80,0.7);line-height:1.75;margin-bottom:18px;
}
.card-moral{
  padding:14px 18px;
  background:rgba(91,138,114,0.08);
  border-left:3px solid var(--indigo);
  border-radius:0 6px 6px 0;margin-bottom:16px;
}
.card-moral-label{
  font-family:var(--font-sans-en);font-size:.7rem;font-weight:600;
  letter-spacing:1.5px;text-transform:uppercase;
  color:var(--indigo);margin-bottom:4px;
}
.card-moral p{
  font-family:var(--font-serif-en);font-size:.9rem;
  color:rgba(44,62,80,0.7);line-height:1.7;font-style:italic;
}
.card-read-more{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-sans-en);font-size:.8rem;font-weight:500;
  color:var(--candle-yellow);letter-spacing:.5px;
  transition:gap var(--transition-fast);
}
.card-read-more:hover{gap:10px}

/* --- Featured Section --- */
.featured-section{
  padding:80px 2rem;
  background:var(--paper-deep);
}
.featured-inner{
  max-width:900px;margin:0 auto;
  display:grid;grid-template-columns:1fr 1.5fr;gap:48px;align-items:center;
}
@media(max-width:768px){.featured-inner{grid-template-columns:1fr;gap:32px}}
.featured-visual{
  text-align:center;padding:40px;
  background:radial-gradient(circle,rgba(212,165,116,0.1) 0%,transparent 70%);
  border-radius:12px;
}
.featured-char{
  font-family:var(--font-serif-cn);
  font-size:clamp(80px,15vw,140px);
  color:rgba(44,62,80,0.08);line-height:1;
}
.featured-text h2{
  font-family:var(--font-display-en);font-size:1.8rem;font-weight:700;
  color:var(--ink-cyan);margin-bottom:6px;
}
.featured-text .cn-title{
  font-family:var(--font-serif-cn);font-size:1.2rem;
  color:var(--candle-yellow);margin-bottom:18px;
}
.featured-text p{
  font-family:var(--font-serif-en);font-size:1.02rem;
  color:rgba(44,62,80,0.65);line-height:1.85;margin-bottom:14px;
}

/* --- Quote Strip --- */
.quote-strip{
  padding:56px 2rem;
  background:var(--paper-deep);
  border-top:1px solid var(--ink-border);
  border-bottom:1px solid var(--ink-border);
}
.quote-inner{max-width:800px;margin:0 auto;text-align:center}
.quote-strip blockquote{
  font-family:var(--font-serif-cn);
  font-size:clamp(1.1rem,2.5vw,1.5rem);
  color:var(--ink-cyan);line-height:1.8;margin-bottom:10px;
}
.quote-strip .translation{
  font-family:var(--font-serif-en);font-style:italic;
  font-size:1.02rem;color:rgba(44,62,80,0.5);margin-bottom:8px;
}
.quote-strip .source{
  font-family:var(--font-sans-en);font-size:.8rem;
  color:rgba(44,62,80,0.35);
}

/* --- Reading Guide --- */
.reading-guide{padding:80px 2rem;max-width:1000px;margin:0 auto}
.reading-guide .section-header{text-align:center;margin-bottom:48px}
.reading-guide .section-header h2{
  font-family:var(--font-display-en);font-size:clamp(1.4rem,3vw,2rem);
  font-weight:600;color:var(--ink-cyan);margin-bottom:6px;
}
.reading-guide .section-header .sub{
  font-family:var(--font-serif-en);font-style:italic;
  color:rgba(44,62,80,0.4);font-size:1rem;
}
.guide-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px;
}
.guide-item{
  padding:24px;
  background:var(--paper-warm);
  border:1px solid var(--ink-border);border-radius:8px;
  transition:border-color var(--transition-normal);
}
.guide-item:hover{border-color:rgba(212,165,116,0.3)}
.guide-icon{font-size:1.8rem;margin-bottom:10px}
.guide-item h3{
  font-family:var(--font-display-en);font-size:1rem;font-weight:600;
  color:var(--ink-cyan);margin-bottom:8px;
}
.guide-item p{
  font-family:var(--font-serif-en);font-size:.9rem;
  color:rgba(44,62,80,0.55);line-height:1.7;
}

/* --- Section Header (shared) --- */
.section-header{text-align:center;margin-bottom:48px}
.section-header h2{
  font-family:var(--font-display-en);
  font-size:clamp(1.4rem,3vw,2rem);font-weight:600;
  color:var(--ink-cyan);margin-bottom:6px;
}
.section-header .sub{
  font-family:var(--font-serif-en);font-style:italic;
  color:rgba(44,62,80,0.4);font-size:1rem;
}

/* --- Footer --- */
.site-footer{
  padding:48px 2rem 32px;
  border-top:1px solid var(--ink-border);
  text-align:center;background:var(--paper-deep);
}
.footer-logo{
  font-family:var(--font-display-en);font-size:1.1rem;
  color:rgba(44,62,80,0.5);letter-spacing:2px;margin-bottom:12px;
}
.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:20px;margin-bottom:20px}
.footer-links a{font-family:var(--font-sans-en);font-size:.8rem;color:rgba(44,62,80,0.4)}
.footer-links a:hover{color:var(--candle-yellow)}
.footer-copy{font-family:var(--font-sans-en);font-size:.75rem;color:rgba(44,62,80,0.25)}

/* --- Scroll Animations --- */
.fade-in{opacity:0;transform:translateY(20px);transition:opacity .6s ease,transform .6s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}

/* ============================================
   Individual Story Page
   ============================================ */

/* --- Story Header --- */
.story-header{
  padding:80px 2rem 48px;
  text-align:center;
  background:
    radial-gradient(ellipse at 50% 30%,rgba(212,165,116,0.05) 0%,transparent 60%),
    var(--paper-white);
}
.breadcrumb{
  font-family:var(--font-sans-en);font-size:.8rem;
  color:rgba(44,62,80,0.4);margin-bottom:24px;
}
.breadcrumb a{color:rgba(44,62,80,0.5)}
.breadcrumb a:hover{color:var(--candle-yellow)}
.breadcrumb .sep{margin:0 8px;opacity:.4}
.story-title-cn{
  font-family:var(--font-serif-cn);
  font-size:clamp(2rem,5vw,3.2rem);font-weight:700;
  color:var(--ink-cyan);margin-bottom:8px;
}
.story-title-en{
  font-family:var(--font-display-en);
  font-size:clamp(1.2rem,3vw,1.8rem);font-weight:600;
  color:rgba(44,62,80,0.7);margin-bottom:12px;
}
.story-subtitle{
  font-family:var(--font-serif-cn);font-size:1rem;
  color:var(--candle-yellow);margin-bottom:4px;
}
.story-subtitle-en{
  font-family:var(--font-serif-en);font-style:italic;
  font-size:.95rem;color:rgba(44,62,80,0.45);margin-bottom:16px;
}
.story-tags{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-bottom:20px}
.story-tags .tag{
  font-family:var(--font-sans-cn);font-size:.75rem;
  padding:4px 12px;border:1px solid var(--ink-border);border-radius:4px;
  color:rgba(44,62,80,0.55);
}
.story-hero-image{
  max-width:500px;margin:24px auto 0;border-radius:12px;
  box-shadow:0 8px 30px var(--shadow-soft);
}

/* --- Reading Controls --- */
.reading-controls{
  display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:16px;
  padding:16px 2rem;
  background:var(--paper-deep);
  border-top:1px solid var(--ink-border);
  border-bottom:1px solid var(--ink-border);
  position:sticky;top:64px;z-index:50;
}
.control-group{display:flex;align-items:center;gap:8px}
.control-label{
  font-family:var(--font-sans-en);font-size:.75rem;font-weight:600;
  color:rgba(44,62,80,0.4);letter-spacing:.5px;
}
.control-btn{
  font-family:var(--font-sans-en);font-size:.78rem;font-weight:500;
  padding:5px 14px;border:1px solid var(--ink-border);border-radius:4px;
  background:transparent;color:rgba(44,62,80,0.6);cursor:pointer;
  transition:all var(--transition-fast);
}
.control-btn:hover,.control-btn.active{
  background:var(--candle-glow);border-color:rgba(212,165,116,0.3);
  color:var(--candle-yellow);
}

/* --- Story Layout --- */
.story-layout{
  display:flex;gap:32px;max-width:1100px;margin:0 auto;padding:40px 2rem;
}
@media(max-width:900px){.story-layout{flex-direction:column}}

/* --- TOC Sidebar --- */
.story-toc{
  flex:0 0 220px;position:sticky;top:140px;align-self:flex-start;
  max-height:calc(100vh - 160px);overflow-y:auto;
}
@media(max-width:900px){
  .story-toc{position:static;flex:none;max-height:none}
}
.toc-title{
  font-family:var(--font-sans-en);font-size:.7rem;font-weight:600;
  letter-spacing:2px;text-transform:uppercase;
  color:rgba(44,62,80,0.35);margin-bottom:12px;
}
.toc-list{
  list-style:none;padding:0;
  border-left:2px solid var(--ink-border);
}
.toc-list li{margin:0}
.toc-list a{
  display:block;padding:6px 0 6px 16px;
  font-family:var(--font-sans-en);font-size:.82rem;
  color:rgba(44,62,80,0.5);transition:all var(--transition-fast);
  border-left:2px solid transparent;margin-left:-2px;
}
.toc-list a:hover,.toc-list a.active{
  color:var(--candle-yellow);border-left-color:var(--candle-yellow);
}

/* --- Story Content --- */
.story-content{flex:1;min-width:0}

/* Bilingual Block */
.bilingual-block{
  margin-bottom:48px;
  padding:32px;
  background:var(--paper-warm);
  border:1px solid var(--ink-border);border-radius:8px;
}
.section-label{
  font-family:var(--font-sans-en);font-size:.75rem;font-weight:600;
  letter-spacing:2px;text-transform:uppercase;
  color:var(--candle-yellow);margin-bottom:20px;
  padding-bottom:10px;border-bottom:1px solid var(--ink-border);
}
.text-columns{
  display:grid;grid-template-columns:1fr 1fr;gap:32px;
}
@media(max-width:768px){.text-columns{grid-template-columns:1fr}}
.text-col{min-width:0}
.lang-label{
  font-family:var(--font-sans-en);font-size:.7rem;font-weight:600;
  letter-spacing:1.5px;text-transform:uppercase;
  color:rgba(44,62,80,0.3);margin-bottom:12px;
}
.text-col-cn{
  font-family:var(--font-serif-cn);font-size:.95rem;
  color:var(--ink-cyan);line-height:2;
}
.text-col-en{
  font-family:var(--font-serif-en);font-size:.98rem;
  color:rgba(44,62,80,0.75);line-height:1.85;
}

/* Term Popup */
.term{
  border-bottom:1px dashed var(--candle-yellow);
  cursor:help;position:relative;
}
.term-popup{
  display:none;position:absolute;bottom:100%;left:50%;transform:translateX(-50%);
  width:260px;padding:14px;
  background:var(--ink-cyan);color:var(--paper-white);
  border-radius:6px;font-size:.82rem;line-height:1.6;
  box-shadow:0 8px 24px rgba(0,0,0,0.2);z-index:10;
  font-family:var(--font-sans-en);
}
.term:hover .term-popup{display:block}
.term-title{font-weight:600;color:var(--candle-yellow);display:block;margin-bottom:4px}
.term-pinyin{font-style:italic;opacity:.6;display:block;margin-bottom:6px}

/* Analysis & Annotations */
.analysis-section,.annotation-section{
  margin-top:48px;padding:32px;
  background:var(--paper-deep);
  border:1px solid var(--ink-border);border-radius:8px;
}
.analysis-section h3,.annotation-section h3{
  font-family:var(--font-display-en);font-size:1.2rem;font-weight:600;
  color:var(--ink-cyan);margin-bottom:16px;
}
.analysis-section p,.annotation-section p{
  font-family:var(--font-serif-en);font-size:.98rem;
  color:rgba(44,62,80,0.7);line-height:1.85;margin-bottom:14px;
}

/* Navigation between stories */
.story-nav{
  display:flex;justify-content:space-between;gap:20px;
  margin-top:48px;padding-top:32px;
  border-top:1px solid var(--ink-border);
}
.story-nav a{
  display:flex;flex-direction:column;gap:4px;
  font-family:var(--font-sans-en);font-size:.8rem;
  color:rgba(44,62,80,0.4);
}
.story-nav a:hover{color:var(--candle-yellow)}
.story-nav .nav-label{font-size:.7rem;letter-spacing:1px;text-transform:uppercase}
.story-nav .nav-title{
  font-family:var(--font-serif-cn);font-size:1rem;
  color:var(--ink-cyan);font-weight:600;
}
.story-nav .next{text-align:right}

/* --- Utility --- */
.sr-only{
  position:absolute;width:1px;height:1px;overflow:hidden;
  clip:rect(0,0,0,0);white-space:nowrap;
}

    /* --- Related Stories --- */
    .related-stories {
      margin-top: 48px;
      padding-top: 32px;
      border-top: 1px solid var(--ink-border);
    }
    .related-title {
      font-family: var(--font-display-en);
      font-size: 1.1rem;
      font-weight: 600;
      color: var(--ink-cyan);
      margin-bottom: 20px;
      text-align: center;
    }
    .related-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
      gap: 16px;
    }
    .related-item {
      display: flex;
      flex-direction: column;
      gap: 4px;
      padding: 16px;
      background: var(--paper-warm);
      border: 1px solid var(--ink-border);
      border-radius: 8px;
      transition: all var(--transition-normal);
      text-decoration: none;
    }
    .related-item:hover {
      border-color: rgba(212,165,116,0.3);
      transform: translateY(-2px);
      box-shadow: 0 4px 12px var(--shadow-soft);
    }
    .related-cn {
      font-family: var(--font-serif-cn);
      font-size: 1rem;
      font-weight: 600;
      color: var(--ink-cyan);
    }
    .related-en {
      font-family: var(--font-serif-en);
      font-size: 0.85rem;
      color: rgba(44,62,80,0.55);
      line-height: 1.4;
    }