/* ==========================================================================
   WalkLife AI Lab — 共用漫畫風格設計系統
   命名規則：所有共用元件 class 一律加上 wl- 前綴，避免與各教材頁自身樣式衝突
   ========================================================================== */

:root{
  --wl-cream:#fff7df;
  --wl-yellow:#ffdc55;
  --wl-yellow-dark:#f5c518;
  --wl-ink:#222222;
  --wl-red:#ff6b6b;
  --wl-blue:#5b8def;
  --wl-blue-light:#eaf8ff;
  --wl-green:#b9f2c9;
  --wl-white:#ffffff;
  --wl-shadow-sm:4px 4px 0 var(--wl-ink);
  --wl-shadow-md:7px 7px 0 var(--wl-ink);
  --wl-shadow-lg:10px 10px 0 var(--wl-ink);
  --wl-radius:18px;
  --wl-font:"Noto Sans TC","Microsoft JhengHei",-apple-system,BlinkMacSystemFont,sans-serif;
}

/* ---------- Header / Nav ---------- */
.wl-header{
  position:sticky; top:0; z-index:100;
  background:var(--wl-yellow);
  border-bottom:5px solid var(--wl-ink);
}
.wl-header-inner{
  max-width:1180px; margin:0 auto; padding:12px 18px;
  display:flex; align-items:center; justify-content:space-between; gap:16px;
}
.wl-logo{
  display:flex; align-items:center; gap:10px;
  text-decoration:none; color:var(--wl-ink); font-weight:900;
  font-size:1.15rem; white-space:nowrap;
}
.wl-logo .wl-logo-badge{
  display:inline-flex; align-items:center; justify-content:center;
  width:38px; height:38px; border-radius:12px;
  background:var(--wl-ink); color:var(--wl-yellow);
  font-size:1.2rem; border:3px solid var(--wl-ink);
  box-shadow:3px 3px 0 rgba(0,0,0,.25);
}
.wl-logo .wl-logo-sub{display:block; font-size:.62rem; font-weight:700; color:#4a3d00; letter-spacing:.03em;}
.wl-nav{display:flex; align-items:center; gap:4px;}
.wl-nav a{
  text-decoration:none; color:var(--wl-ink); font-weight:800; font-size:.92rem;
  padding:8px 14px; border-radius:999px; border:3px solid transparent; transition:.15s;
}
.wl-nav a:hover{border-color:var(--wl-ink); background:var(--wl-white);}
.wl-nav a.wl-nav-cta{background:var(--wl-ink); color:var(--wl-yellow); border-color:var(--wl-ink);}
.wl-nav a.wl-nav-cta:hover{background:#3a3a3a;}
.wl-burger{
  display:none; width:44px; height:44px; border:3px solid var(--wl-ink); border-radius:12px;
  background:var(--wl-white); cursor:pointer; padding:0; position:relative;
}
.wl-burger span, .wl-burger span::before, .wl-burger span::after{
  content:""; position:absolute; left:10px; right:10px; height:3px; background:var(--wl-ink); border-radius:2px;
}
.wl-burger span{top:21px;}
.wl-burger span::before{top:-8px;}
.wl-burger span::after{top:8px;}

@media (max-width:820px){
  .wl-nav{
    position:fixed; inset:66px 0 auto 0; background:var(--wl-yellow); border-bottom:5px solid var(--wl-ink);
    flex-direction:column; align-items:stretch; padding:10px 18px 18px; gap:6px;
    transform:translateY(-120%); transition:transform .2s ease; box-shadow:0 8px 0 rgba(0,0,0,.12);
  }
  .wl-nav.wl-open{transform:translateY(0);}
  .wl-nav a{text-align:center; padding:12px;}
  .wl-burger{display:block;}
}

/* ---------- Page info bar (breadcrumb + tags + WP cross-link) ---------- */
.wl-pagebar{background:var(--wl-cream); border-bottom:3px dashed var(--wl-ink); padding:14px 18px 18px;}
.wl-pagebar-inner{max-width:1150px; margin:0 auto;}
.wl-crumb{font-size:.8rem; font-weight:700; color:#5b4d00; margin:0 0 10px;}
.wl-crumb a{color:#5b4d00; text-decoration:underline;}
.wl-chips{display:flex; flex-wrap:wrap; gap:8px; margin-bottom:12px;}
.wl-chip{
  display:inline-flex; align-items:center; gap:5px; font-size:.75rem; font-weight:900;
  border:2.5px solid var(--wl-ink); border-radius:999px; padding:3px 12px; background:var(--wl-white);
}
.wl-chip.wl-chip-level{background:var(--wl-red); color:#fff;}
.wl-chip.wl-chip-time{background:var(--wl-blue-light);}
.wl-wp-link{
  display:flex; align-items:center; gap:12px; flex-wrap:wrap;
  background:var(--wl-white); border:3px solid var(--wl-ink); border-radius:16px;
  padding:12px 16px; box-shadow:5px 5px 0 var(--wl-ink);
}
.wl-wp-link .wl-wp-icon{font-size:1.6rem;}
.wl-wp-link p{margin:0; font-size:.85rem; font-weight:700; flex:1; min-width:200px;}
.wl-wp-link a{
  text-decoration:none; background:var(--wl-ink); color:var(--wl-yellow); font-weight:900;
  font-size:.82rem; padding:8px 16px; border-radius:999px; white-space:nowrap;
}
.wl-wp-link a:hover{background:#3a3a3a;}

/* ---------- Ad slot ---------- */
.wl-ad{max-width:1150px; margin:26px auto; padding:0 18px; text-align:center;}
.wl-ad-label{font-size:.65rem; font-weight:700; color:#999; letter-spacing:.08em; margin-bottom:6px;}

/* ---------- Footer ---------- */
.wl-footer{background:var(--wl-ink); color:#eee; margin-top:50px;}
.wl-footer-related{background:var(--wl-cream); border-top:5px solid var(--wl-ink); border-bottom:5px solid var(--wl-ink); padding:34px 18px;}
.wl-footer-related-inner{max-width:1150px; margin:0 auto;}
.wl-footer-related h2{margin:0 0 18px; font-size:1.4rem; color:var(--wl-ink);}
.wl-related-grid{display:grid; grid-template-columns:repeat(auto-fill,minmax(230px,1fr)); gap:16px;}
.wl-related-card{
  display:flex; flex-direction:column; gap:6px; text-decoration:none; color:var(--wl-ink);
  background:var(--wl-white); border:3px solid var(--wl-ink); border-radius:16px; padding:16px;
  box-shadow:5px 5px 0 var(--wl-ink); transition:.15s;
}
.wl-related-card:hover{transform:translate(-2px,-2px); box-shadow:7px 7px 0 var(--wl-ink);}
.wl-related-card .wl-rc-icon{font-size:1.8rem;}
.wl-related-card h3{margin:0; font-size:.95rem; line-height:1.4;}
.wl-related-card span{font-size:.75rem; font-weight:700; color:var(--wl-blue);}

.wl-footer-inner{max-width:1150px; margin:0 auto; padding:34px 18px 26px; display:flex; flex-wrap:wrap; gap:24px; justify-content:space-between;}
.wl-footer-brand{max-width:340px;}
.wl-footer-brand .wl-logo{color:var(--wl-yellow);}
.wl-footer-brand .wl-logo .wl-logo-sub{color:#bbb;}
.wl-footer-brand p{font-size:.82rem; color:#bbb; line-height:1.7; margin-top:10px;}
.wl-footer-cols{display:flex; gap:48px; flex-wrap:wrap;}
.wl-footer-col h4{font-size:.8rem; text-transform:uppercase; letter-spacing:.06em; color:#888; margin:0 0 12px;}
.wl-footer-col a{display:block; color:#ddd; text-decoration:none; font-size:.86rem; margin-bottom:9px;}
.wl-footer-col a:hover{color:var(--wl-yellow);}
.wl-footer-bottom{border-top:1px solid #3a3a3a; padding:16px 18px; text-align:center; font-size:.75rem; color:#888;}
.wl-footer-bottom a{color:#aaa;}

/* ---------- Prose pages (about / privacy) ---------- */
.wl-prose{max-width:820px; margin:0 auto; padding:40px 20px 80px;}
.wl-prose h1{font-size:clamp(28px,5vw,42px); margin:0 0 8px;}
.wl-prose .wl-prose-sub{color:#5b4d00; font-weight:700; margin-bottom:32px;}
.wl-prose h2{font-size:1.4rem; margin:36px 0 12px; border-left:8px solid var(--wl-yellow); padding-left:12px;}
.wl-prose p, .wl-prose li{font-size:1rem; line-height:1.9; color:#333;}
.wl-prose ul{padding-left:22px;}
.wl-prose a{color:var(--wl-blue);}

@media (max-width:600px){
  .wl-footer-inner{flex-direction:column;}
  .wl-related-grid{grid-template-columns:1fr 1fr;}
}