/**
 * training-ui.css — 跃创年轮训练插件统一UI规范
 *
 * 使用方式：每个插件在 <head> 中引入此文件，
 * 然后通过 :root { --accent: #plugin色 } 覆盖主色。
 *
 * 插件只需定义自己的特有样式，通用组件全部由此文件提供。
 */

/* ===== 1. 基础变量 ===== */
:root {
  /* 可被插件覆盖的主题色 */
  --accent: #F97316;
  --accent-dim: rgba(249,115,22,0.15);

  /* 深色背景体系 */
  --bg: #0A1628;
  --bg2: #0F1E33;
  --bg3: #162840;

  /* 文字 */
  --text: #ECF0F5;
  --text2: #8A9BB5;
  --text3: #5A6A80;

  /* 语义色 */
  --green: #3dba6a;
  --red: #FF6B6B;
  --yellow: #FFD93D;
  --blue: #38BDF8;

  /* 圆角 */
  --r: 16px;
  --r-sm: 12px;
  --r-xs: 8px;

  /* 字体 */
  --font: 'Noto Sans SC', -apple-system, 'PingFang SC', sans-serif;
}

/* ===== 2. 全局重置 ===== */
*{margin:0;padding:0;box-sizing:border-box}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  max-width:480px;
  margin:0 auto;
  min-height:100vh;
  overflow-x:hidden;
  -webkit-tap-highlight-color:transparent;
}

/* ===== 3. 导航栏 ===== */
.top-bar{
  display:flex;
  align-items:center;
  padding:12px 16px;
  background:var(--bg2);
  position:sticky;
  top:0;
  z-index:100;
  border-bottom:1px solid rgba(255,255,255,0.05);
}
.top-bar .back{
  font-size:22px;
  cursor:pointer;
  color:var(--text2);
  width:36px;
  transition:transform 0.15s;
  background:none;
  border:none;
}
.top-bar .back:active{transform:scale(0.92)}
.top-bar .title{
  flex:1;
  text-align:center;
  font-size:16px;
  font-weight:700;
}
.top-bar .title span{color:var(--accent)}

/* ===== 4. 按钮 ===== */
.btn-primary{
  width:100%;
  background:linear-gradient(135deg,var(--accent),color-mix(in srgb,var(--accent) 80%,#000));
  border:none;
  border-radius:var(--r-sm);
  padding:14px 16px;
  font-size:15px;
  font-weight:700;
  color:#fff;
  cursor:pointer;
  transition:transform 0.15s;
  font-family:inherit;
}
.btn-primary:active{transform:scale(0.98)}
.btn-primary:disabled{opacity:0.5;cursor:not-allowed;transform:none}

.btn-secondary{
  width:100%;
  background:var(--bg3);
  border:1px solid rgba(255,255,255,0.1);
  border-radius:var(--r-sm);
  padding:12px 16px;
  font-size:14px;
  color:var(--text);
  cursor:pointer;
  margin-top:8px;
  transition:transform 0.15s;
  font-family:inherit;
}
.btn-secondary:active{transform:scale(0.98)}

/* ===== 5. 选项按钮 ===== */
.options-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:12px;
  margin-bottom:16px;
}
.option-btn{
  background:var(--bg3);
  border:2px solid rgba(255,255,255,0.08);
  border-radius:var(--r-sm);
  padding:14px 12px;
  text-align:center;
  cursor:pointer;
  transition:all 0.2s;
  font-size:14px;
  color:var(--text);
  font-family:inherit;
  min-height:48px;
  display:flex;
  align-items:center;
  justify-content:center;
}
.option-btn:active{transform:scale(0.96)}
.option-btn.selected{border-color:var(--accent);background:var(--accent-dim)}
.option-btn.correct{border-color:var(--green);background:rgba(52,211,153,0.15);pointer-events:none}
.option-btn.wrong{border-color:var(--red);background:rgba(255,107,107,0.15);pointer-events:none}

/* ===== 6. 进度条 ===== */
.progress-bar{
  width:100%;
  height:6px;
  background:rgba(255,255,255,0.08);
  border-radius:3px;
  margin-bottom:16px;
  overflow:hidden;
}
.progress-bar .fill{
  height:100%;
  background:var(--accent);
  border-radius:3px;
  transition:width 0.6s cubic-bezier(0.4,0,0.2,1);
}

/* ===== 7. 卡片/模块选择 ===== */
.mod-card{
  background:var(--bg3);
  border:1px solid rgba(255,255,255,0.06);
  border-radius:var(--r);
  padding:16px;
  margin-bottom:12px;
  display:flex;
  gap:14px;
  align-items:center;
  cursor:pointer;
  transition:all 0.2s;
}
.mod-card:active{transform:scale(0.98)}
.mod-card .mc-icon{
  width:44px;height:44px;
  border-radius:var(--r-sm);
  display:flex;align-items:center;justify-content:center;
  font-size:22px;
  background:var(--accent-dim);
  flex-shrink:0;
}
.mod-card .mc-info{flex:1}
.mod-card .mc-name{font-size:15px;font-weight:600}
.mod-card .mc-desc{font-size:12px;color:var(--text2);margin-top:2px}
.mod-card .mc-diff{
  font-size:10px;padding:2px 8px;border-radius:8px;font-weight:700;
}
.mc-diff.easy{background:rgba(52,211,153,0.2);color:var(--green)}
.mc-diff.medium{background:rgba(255,217,61,0.2);color:var(--yellow)}
.mc-diff.hard{background:rgba(255,107,107,0.2);color:var(--red)}

/* ===== 8. 结果页 ===== */
.result-score{
  font-size:56px;
  font-weight:900;
  color:var(--accent);
  text-align:center;
  animation:scorePop 0.6s cubic-bezier(0.175,0.885,0.32,1.275);
  margin-bottom:16px;
}
@keyframes scorePop{
  from{opacity:0;transform:scale(0.3)}
  60%{transform:scale(1.1)}
  to{opacity:1;transform:scale(1)}
}

.result-stars{
  font-size:32px;
  text-align:center;
  margin-bottom:16px;
  animation:starsIn 0.8s ease 0.3s both;
}
@keyframes starsIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}

.result-detail{
  background:var(--bg3);
  border-radius:var(--r);
  padding:16px;
  text-align:left;
  margin-bottom:16px;
  border:1px solid rgba(255,255,255,0.06);
}
.result-row{
  display:flex;
  justify-content:space-between;
  padding:8px 0;
  border-bottom:1px solid rgba(255,255,255,0.05);
  font-size:14px;
}
.result-row:last-child{border:none}
.result-row .label{color:var(--text2)}
.result-row .value{font-weight:600}

/* ===== 9. 反馈气泡 ===== */
.feedback{
  background:var(--bg3);
  border-radius:var(--r);
  padding:16px;
  margin-bottom:16px;
  text-align:center;
  display:none;
  border:1px solid rgba(255,255,255,0.08);
  animation:fbIn 0.3s ease;
}
.feedback.show{display:block}
@keyframes fbIn{from{opacity:0;transform:scale(0.9)}to{opacity:1;transform:scale(1)}}

.fb-emoji{font-size:36px;margin-bottom:8px}
.fb-text{font-size:14px;line-height:1.7;color:var(--text2)}

/* ===== 10. Toast ===== */
.toast{
  position:fixed;
  top:20px;left:50%;
  transform:translateX(-50%);
  background:rgba(0,0,0,0.85);
  color:#fff;
  padding:10px 20px;
  border-radius:20px;
  font-size:13px;
  z-index:9999;
  animation:toastIn 0.3s ease,toastOut 0.3s ease 2.2s forwards;
  pointer-events:none;
}
@keyframes toastIn{from{opacity:0;transform:translateX(-50%) translateY(-10px)}to{opacity:1;transform:translateX(-50%) translateY(0)}}
@keyframes toastOut{to{opacity:0;transform:translateX(-50%) translateY(-10px)}}

/* ===== 11. 星星飞入 ===== */
.star-fly{
  position:fixed;font-size:28px;z-index:9999;pointer-events:none;
  animation:starFly 1.2s cubic-bezier(0.25,0.46,0.45,0.94) forwards;
}
@keyframes starFly{
  0%{opacity:1;transform:scale(1)}
  40%{opacity:1;transform:scale(1.5) translateY(-30px)}
  100%{opacity:0;transform:scale(0.5) translateY(-120px)}
}

/* ===== 12. 页面过渡 ===== */
.page-enter{animation:pageEnter 0.4s ease}
@keyframes pageEnter{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}

/* ===== 13. SAFE时间管理 ===== */
.safe-timer{
  position:fixed;bottom:0;left:50%;transform:translateX(-50%);
  width:100%;max-width:480px;
  background:var(--bg2);
  padding:6px 16px;
  z-index:90;
  border-top:1px solid rgba(255,255,255,0.06);
}
.safe-fill{
  height:4px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--accent),var(--green));
  transition:width 1s linear;
}
.safe-text{
  font-size:10px;color:var(--text2);text-align:center;margin-top:3px;
}
.rest-overlay{
  position:fixed;inset:0;z-index:9990;
  background:rgba(0,0,0,0.92);
  display:flex;flex-direction:column;
  align-items:center;justify-content:center;
  color:#fff;
}
.rest-countdown{font-size:64px;font-weight:900;margin:20px 0}
.rest-btn{
  background:var(--accent);color:#fff;border:none;
  border-radius:var(--r-sm);padding:14px 40px;
  font-size:16px;font-weight:700;cursor:pointer;
  animation:restBounce 1s ease infinite;
  font-family:inherit;
}
@keyframes restBounce{0%,100%{transform:scale(1)}50%{transform:scale(1.05)}}

/* ===== 14. 无障碍 ===== */
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}
@media(prefers-reduced-motion:reduce){*{animation-duration:0.01ms!important;transition-duration:0.01ms!important}}

/* ===== 15. 滚动条 ===== */
::-webkit-scrollbar{width:4px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,0.1);border-radius:2px}

/* ===== 16. 骨架屏 (Skeleton Loading) ===== */
.skeleton{position:relative;overflow:hidden;background:var(--bg3);border-radius:8px}
.skeleton::after{content:'';position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,0.06),transparent);animation:skeletonShimmer 1.5s infinite}
@keyframes skeletonShimmer{to{left:100%}}
.skeleton-text{height:14px;margin:8px 0;border-radius:4px}
.skeleton-text.short{width:60%}
.skeleton-text.medium{width:80%}
.skeleton-title{height:20px;width:40%;margin:12px 0;border-radius:4px}
.skeleton-circle{width:40px;height:40px;border-radius:50%}
.skeleton-card{height:120px;margin:12px 0;border-radius:12px}
.skeleton-row{display:flex;gap:12px;align-items:center;padding:12px 0}

/* ===== 17. 离线提示 ===== */
.offline-banner{position:fixed;top:0;left:0;right:0;z-index:10000;background:linear-gradient(135deg,#D97706,#B45309);color:#fff;text-align:center;padding:8px 16px;font-size:13px;font-weight:600;transform:translateY(-100%);transition:transform .3s ease;display:flex;align-items:center;justify-content:center;gap:6px}
.offline-banner.show{transform:translateY(0)}
.offline-banner .dot{width:8px;height:8px;border-radius:50%;background:#fff;animation:offlinePulse 1.5s infinite}
@keyframes offlinePulse{0%,100%{opacity:1}50%{opacity:0.3}}

/* ===== 18. 错误边界 ===== */
.error-boundary{display:none;flex-direction:column;align-items:center;justify-content:center;padding:40px 20px;text-align:center;min-height:200px}
.error-boundary.show{display:flex}
.error-boundary .error-icon{font-size:48px;margin-bottom:16px;opacity:0.6}
.error-boundary .error-msg{color:var(--text2);font-size:14px;margin-bottom:16px;max-width:300px}
.error-boundary .retry-btn{background:var(--accent);color:#fff;border:none;padding:10px 24px;border-radius:8px;font-size:14px;cursor:pointer;font-weight:600}
.error-boundary .retry-btn:active{transform:scale(0.95)}

/* ===== 19. 空状态 ===== */
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:60px 20px;text-align:center}
.empty-state .empty-icon{font-size:56px;margin-bottom:16px;opacity:0.5}
.empty-state .empty-title{color:var(--text);font-size:16px;font-weight:600;margin-bottom:8px}
.empty-state .empty-desc{color:var(--text2);font-size:13px;max-width:260px}

/* ===== 20. 页面切换动画 ===== */
.page-enter{animation:pageEnter .3s ease}
@keyframes pageEnter{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
