/* ==========================================
   FBTI Lab · 浅色主题统一样式（测试页面共用）
   基于设计稿的奶油白底 + 金色光晕 + 器械装饰
   ========================================== */

:root{
  --fbti-gold:#FFD700;
  --fbti-red:#FF3131;
  --fbti-ink:#1A1A1A;
  --fbti-cream:#FAF7F0;
  --fbti-white:#FFFFFF;
  --fbti-line:rgba(26,26,26,0.08);
  --fbti-text-1:#1A1A1A;
  --fbti-text-2:rgba(26,26,26,0.6);
  --fbti-text-3:rgba(26,26,26,0.45);
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-pill:999px;
  --shadow-card:0 2px 8px rgba(26,26,26,0.04);
  --shadow-hover:0 6px 20px rgba(26,26,26,0.08);
}

*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
html,body{background:var(--fbti-cream);color:var(--fbti-text-1)}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Helvetica Neue","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.6;
  min-height:100vh;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}

/* 顶部进度条（浅色版）*/
.topbar{
  position:sticky;top:0;z-index:10;
  background:rgba(250,247,240,0.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  padding:14px 20px;
  border-bottom:0.5px solid var(--fbti-line);
}
.topbar-row{
  display:flex;justify-content:space-between;align-items:center;
  margin-bottom:10px;
  max-width:600px;margin-left:auto;margin-right:auto;
}
.back-btn{
  color:var(--fbti-text-2);font-size:13px;
  display:inline-flex;align-items:center;gap:4px;
}
.back-btn:hover{color:var(--fbti-red)}
.progress-text{
  font-size:12px;color:var(--fbti-text-2);
  letter-spacing:1px;
}
.progress-text b{color:var(--fbti-ink);font-size:14px;font-weight:600}
.progress-bar{
  height:2px;background:var(--fbti-line);
  border-radius:2px;overflow:hidden;
  max-width:600px;margin:0 auto;
}
.progress-fill{
  height:100%;background:var(--fbti-gold);
  width:0%;transition:width 0.3s ease;
}

/* 主内容区 */
.page{
  position:relative;
  max-width:600px;
  margin:0 auto;
  padding:30px 20px 40px;
}

/* 开始页 */
.start-screen{
  text-align:center;
  padding:40px 20px;
  animation:fadeIn 0.5s ease;
}
.start-icon{
  font-size:72px;
  margin-bottom:20px;
  line-height:1;
}
.start-title{
  font-size:30px;font-weight:600;
  color:var(--fbti-ink);
  letter-spacing:-0.5px;
  margin-bottom:10px;
}
.start-sub{
  color:var(--fbti-text-2);
  font-size:14px;
  margin-bottom:28px;
  line-height:1.7;
}
.start-meta{
  display:flex;justify-content:center;gap:10px;
  margin-bottom:32px;
  flex-wrap:wrap;
}
.start-meta span{
  background:var(--fbti-white);
  border:0.5px solid var(--fbti-line);
  border-radius:var(--r-pill);
  padding:6px 14px;
  font-size:12px;
  color:var(--fbti-text-2);
  box-shadow:var(--shadow-card);
}
.start-meta b{color:var(--fbti-ink);font-weight:600}
.start-btn{
  padding:14px 48px;
  background:var(--fbti-ink);
  color:var(--fbti-gold);
  border:none;
  border-radius:var(--r-pill);
  font-size:15px;font-weight:600;
  cursor:pointer;
  letter-spacing:1.5px;
  transition:transform 0.15s ease;
}
.start-btn:active{transform:scale(0.97)}
.start-btn:hover{
  box-shadow:0 6px 20px rgba(26,26,26,0.15);
}

/* 题目区 */
.quiz{animation:fadeIn 0.4s ease}
@keyframes fadeIn{
  from{opacity:0;transform:translateY(8px)}
  to{opacity:1;transform:translateY(0)}
}

.q-icon{
  font-size:44px;text-align:center;
  margin-bottom:16px;line-height:1;
  animation:pop 0.5s cubic-bezier(0.34,1.56,0.64,1);
}
@keyframes pop{
  0%{transform:scale(0.3);opacity:0}
  100%{transform:scale(1);opacity:1}
}
.q-text{
  font-size:21px;font-weight:600;
  color:var(--fbti-ink);
  line-height:1.5;text-align:center;
  margin-bottom:8px;
}
.q-hint{
  text-align:center;
  color:var(--fbti-text-2);
  font-size:12px;
  margin-bottom:24px;
}
.q-hint b{color:var(--fbti-red)}

/* 选项 */
.options{display:flex;flex-direction:column;gap:10px}
.option{
  background:var(--fbti-white);
  border:0.5px solid var(--fbti-line);
  border-radius:var(--r-md);
  padding:15px 16px;
  cursor:pointer;
  transition:all 0.2s ease;
  font-size:14px;
  line-height:1.5;
  display:flex;align-items:center;gap:12px;
  user-select:none;
  box-shadow:var(--shadow-card);
  color:var(--fbti-text-1);
}
.option:active{transform:scale(0.98)}
.option:hover{
  border-color:var(--fbti-gold);
  box-shadow:var(--shadow-hover);
  transform:translateY(-1px);
}
.option.selected{
  border-color:var(--fbti-gold);
  background:linear-gradient(90deg,rgba(255,215,0,0.08),var(--fbti-white));
}
.option-check{
  width:18px;height:18px;border-radius:50%;
  border:1.5px solid rgba(26,26,26,0.2);
  flex-shrink:0;position:relative;
  transition:all 0.2s;
}
.option.selected .option-check{
  border-color:var(--fbti-gold);
  background:var(--fbti-gold);
}
.option.selected .option-check::after{
  content:"";position:absolute;
  top:2px;left:5px;
  width:4px;height:8px;
  border:solid var(--fbti-ink);
  border-width:0 2px 2px 0;
  transform:rotate(45deg);
}
.option.multi .option-check{border-radius:4px}

.next-btn{
  display:none;
  width:100%;margin-top:20px;
  padding:15px;
  background:var(--fbti-ink);
  color:var(--fbti-gold);
  border:none;border-radius:var(--r-md);
  font-size:15px;font-weight:600;
  cursor:pointer;letter-spacing:1px;
  transition:all 0.2s;
}
.next-btn.show{display:block}
.next-btn:active:not(:disabled){transform:scale(0.98)}
.next-btn:disabled{
  opacity:0.5;cursor:not-allowed;
  background:var(--fbti-line);
  color:var(--fbti-text-3);
}

/* 结果页 */
.result{animation:fadeIn 0.5s ease}
.result-hero{
  text-align:center;
  padding:30px 0 24px;
  border-bottom:0.5px solid var(--fbti-line);
  margin-bottom:24px;
}
.result-emoji{
  font-size:90px;line-height:1;
  margin-bottom:14px;
}
.result-name{
  font-size:36px;font-weight:600;
  color:var(--fbti-ink);
  letter-spacing:-0.5px;
  margin-bottom:8px;
}
.result-tag{
  display:inline-block;
  padding:4px 14px;
  background:var(--fbti-ink);
  color:var(--fbti-gold);
  font-size:11px;font-weight:600;
  border-radius:var(--r-pill);
  letter-spacing:1.5px;
  margin-bottom:14px;
}
.result-desc{
  color:var(--fbti-text-2);
  font-size:14px;line-height:1.7;
  max-width:450px;margin:0 auto;
}

.result-traits{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:8px;margin:20px 0;
}
.trait{
  background:var(--fbti-white);
  border:0.5px solid var(--fbti-line);
  border-radius:var(--r-sm);
  padding:10px 12px;
  text-align:center;
  font-size:12px;
  color:var(--fbti-text-1);
  box-shadow:var(--shadow-card);
}
.trait::before{content:"✓ ";color:var(--fbti-red);font-weight:700}

.result-tags{
  display:flex;justify-content:center;
  gap:8px;margin:16px 0;
  flex-wrap:wrap;
}
.tag-pill{
  background:var(--fbti-white);
  border:0.5px solid var(--fbti-gold);
  padding:7px 13px;
  border-radius:var(--r-pill);
  font-size:12px;
  color:var(--fbti-text-2);
}
.tag-pill b{color:var(--fbti-ink);margin-left:4px;font-weight:600}

/* 章节标题 */
.section-title{
  font-size:14px;
  color:var(--fbti-text-2);
  letter-spacing:2px;
  margin:28px 0 14px;
  display:flex;align-items:center;gap:8px;
}
.section-title::before{
  content:"";display:inline-block;
  width:18px;height:2px;
  background:var(--fbti-gold);
}

/* 建议列表 */
.advice-list{display:flex;flex-direction:column;gap:8px}
.advice{
  background:var(--fbti-white);
  border:0.5px solid var(--fbti-line);
  border-left:3px solid var(--fbti-gold);
  padding:11px 14px;
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  font-size:13px;line-height:1.6;
  color:var(--fbti-text-1);
  box-shadow:var(--shadow-card);
}

/* 补剂推荐列表（recommend.html）*/
.stack-item{
  background:var(--fbti-white);
  border:0.5px solid var(--fbti-line);
  border-left:3px solid var(--fbti-gold);
  border-radius:0 var(--r-md) var(--r-md) 0;
  padding:14px 16px;
  margin-bottom:10px;
  display:flex;gap:12px;
  box-shadow:var(--shadow-card);
}
.stack-rank{
  flex-shrink:0;width:32px;height:32px;
  background:var(--fbti-ink);color:var(--fbti-gold);
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:14px;
}
.stack-body{flex:1}
.stack-category{
  font-size:15px;font-weight:600;
  color:var(--fbti-ink);
  margin-bottom:6px;
}
.stack-meta{
  font-size:12px;
  color:var(--fbti-text-2);
  line-height:1.8;
}
.stack-meta .label{color:var(--fbti-red);margin-right:4px;font-weight:500}
.stack-caution{
  margin-top:6px;
  padding:6px 10px;
  background:rgba(255,49,49,0.08);
  border-radius:var(--r-sm);
  color:var(--fbti-red);
  font-size:11px;
}

/* 分享区 */
.share-area{
  background:var(--fbti-white);
  border:1px solid var(--fbti-gold);
  border-radius:var(--r-lg);
  padding:20px;
  margin-top:28px;
  text-align:center;
  box-shadow:var(--shadow-card);
}
.share-title{
  font-size:17px;font-weight:600;
  color:var(--fbti-ink);
  margin-bottom:6px;
}
.share-desc{
  font-size:12px;
  color:var(--fbti-text-2);
  margin-bottom:16px;
  line-height:1.6;
}
.share-btn{
  width:100%;padding:13px;
  background:var(--fbti-ink);color:var(--fbti-gold);
  border:none;border-radius:var(--r-md);
  font-size:14px;font-weight:600;
  cursor:pointer;letter-spacing:1px;
  margin-bottom:8px;transition:all 0.2s;
}
.share-btn:active{transform:scale(0.98)}
.share-btn.secondary{
  background:transparent;
  color:var(--fbti-ink);
  border:0.5px solid var(--fbti-line);
}
.share-btn.secondary:hover{
  border-color:var(--fbti-gold);
  background:rgba(255,215,0,0.05);
}
#share-preview{
  max-width:100%;
  border-radius:var(--r-md);
  margin-top:14px;
  display:none;
  border:0.5px solid var(--fbti-line);
  box-shadow:var(--shadow-card);
}

/* 加载 */
.loading{
  text-align:center;
  padding:80px 20px;
  color:var(--fbti-text-2);
}
.loading-icon{
  font-size:40px;
  animation:spin 1.5s linear infinite;
  display:inline-block;
}
@keyframes spin{to{transform:rotate(360deg)}}

.hidden{display:none !important}

/* 页脚 */
.page-footer{
  text-align:center;
  margin:30px 0 16px;
  font-size:11px;
  color:var(--fbti-text-3);
  letter-spacing:2px;
}

/* === 背景装饰（通用，简化版）=== */
.bg-decor-lite{
  position:fixed;
  inset:0;z-index:-1;
  pointer-events:none;
  overflow:hidden;
}
.bg-decor-lite::before{
  content:"";position:absolute;
  top:-100px;left:-50px;
  width:300px;height:300px;
  background:radial-gradient(circle,rgba(255,215,0,0.12) 0%,transparent 70%);
}
.bg-decor-lite::after{
  content:"";position:absolute;
  bottom:-100px;right:-50px;
  width:250px;height:250px;
  background:radial-gradient(circle,rgba(255,49,49,0.06) 0%,transparent 70%);
}