/* 错题大作战 · 卡通黏土风 */
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
:root{
  --pri:#FF7A45; --pri-dark:#E85D26; --pri-soft:#FFE8DC;
  --teal:#2EC4B6; --teal-dark:#1FA294;
  --sun:#FFD93D; --pink:#FF6B9D; --grape:#A78BFA; --grape-dark:#7C3AED;
  --bg:#FFF6E9; --card:#ffffff; --tx:#3A3226; --mut:#A89E8D;
  --r:22px;
  --shadow:0 6px 0 rgba(122,72,20,.08);
}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg);
  background-image:radial-gradient(#F5E6C8 1.6px, transparent 1.6px);
  background-size:26px 26px;
  color:var(--tx);padding-bottom:96px;font-size:15px;line-height:1.6}
iconify-icon{display:inline-flex;vertical-align:-3px}
.mascot{width:52px;height:52px;animation:bob 3s ease-in-out infinite}
.mascot.sm{width:44px;height:44px}
@keyframes bob{0%,100%{transform:translateY(0) rotate(-2deg)}50%{transform:translateY(-4px) rotate(2deg)}}

/* header */
header{position:sticky;top:0;z-index:10;background:linear-gradient(135deg,#FF9A5C,#FF7A45 60%,#FF6B9D);
  color:#fff;padding:12px 18px;display:flex;justify-content:space-between;align-items:center;
  border-radius:0 0 26px 26px;box-shadow:0 4px 0 rgba(200,90,30,.18)}
.brand{display:flex;align-items:center;gap:10px}
header h1{font-size:19px;font-weight:800;letter-spacing:1px;text-shadow:0 2px 0 rgba(0,0,0,.12)}
.subtitle{font-size:11px;opacity:.92;font-weight:600}
.badge{font-size:11px;background:rgba(255,255,255,.28);padding:6px 12px;border-radius:20px;
  display:flex;align-items:center;gap:4px;font-weight:700}
.badge.ok{background:#fff;color:var(--pri-dark)}

/* layout */
main{max-width:640px;margin:0 auto;padding:14px 14px 0}
.page{display:none}.page.active{display:block;animation:pop .3s}
@keyframes pop{from{opacity:0;transform:scale(.97)}to{opacity:1;transform:scale(1)}}
.card{background:var(--card);border-radius:var(--r);padding:18px;margin-bottom:14px;
  box-shadow:var(--shadow);border:3px solid #fff}
.card h3{font-size:16px;font-weight:800;margin-bottom:10px;display:flex;align-items:center;gap:7px}
.card h3 iconify-icon{color:var(--pri)}
.muted{color:var(--mut);font-size:12px;font-weight:500}

/* streak */
.streak-bar{display:flex;align-items:center;gap:8px;background:#fff;border-radius:18px;
  padding:10px 16px;margin-bottom:14px;box-shadow:var(--shadow);border:3px solid #fff;font-weight:700;font-size:14px}
.streak-bar .flame{width:34px;height:34px;border-radius:12px;background:#FFE8DC;color:#FF7A45;
  display:flex;align-items:center;justify-content:center;animation:flick 1.2s ease-in-out infinite}
@keyframes flick{0%,100%{transform:scale(1)}50%{transform:scale(1.12)}}
.streak-bar b{color:var(--pri-dark);font-size:18px}
.streak-tip{margin-left:auto;font-size:11px;color:var(--mut);font-weight:600}

/* quest card */
.quest{background:linear-gradient(160deg,#fff,#FFF3E4);text-align:center;overflow:hidden;position:relative}
.quest::before{content:"";position:absolute;top:-30px;right:-30px;width:120px;height:120px;
  background:radial-gradient(circle,#FFD93D55,transparent 70%)}
.quest-top{display:flex;justify-content:center;align-items:center;gap:10px;margin-bottom:4px}
.quest-tag{background:var(--pri);color:#fff;font-size:12px;font-weight:800;padding:4px 14px;border-radius:20px;
  box-shadow:0 3px 0 var(--pri-dark)}
.quest-count{font-size:14px;color:var(--mut);font-weight:700}
.quest-count b{font-size:52px;color:var(--pri-dark);font-weight:800}
.due-label{color:var(--mut);margin:2px 0 6px;font-size:13px;font-weight:600}

/* AI teacher card */
.ai-teacher{background:linear-gradient(160deg,#fff,#F5F0FF)}
.ai-head{display:flex;gap:12px;align-items:center;margin-bottom:6px}
.ai-head h3{margin:0}
.diag-nick{display:inline-block;background:linear-gradient(135deg,var(--grape),var(--grape-dark));color:#fff;
  font-weight:800;padding:6px 16px;border-radius:20px;margin:8px 0;box-shadow:0 3px 0 #5B21B6}
.diag-score{display:flex;align-items:center;gap:10px;margin:8px 0;font-weight:800}
.score-bar{flex:1;height:14px;background:#EDE9FE;border-radius:10px;overflow:hidden}
.score-bar i{display:block;height:100%;background:linear-gradient(90deg,var(--grape),var(--grape-dark));border-radius:10px;
  transition:width .8s cubic-bezier(.2,.9,.3,1.2)}
.weak-card{background:#fff;border:2px solid #EDE9FE;border-radius:16px;padding:12px;margin:10px 0}
.weak-card .wt{font-weight:800;display:flex;align-items:center;gap:6px;margin-bottom:4px}
.weak-card .wt iconify-icon{color:var(--grape-dark)}
.weak-card .tip{background:#F5F0FF;border-radius:10px;padding:8px 10px;margin-top:8px;font-size:13px}
.today-plan{background:linear-gradient(135deg,#FFD93D,#FFB800);border-radius:14px;padding:12px;
  font-weight:700;margin-top:10px;box-shadow:0 3px 0 #D99A00}

/* buttons - chunky 3D */
.btn{border:0;background:#fff;border-radius:16px;padding:11px 18px;font-size:14px;font-weight:800;
  cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:7px;
  color:var(--tx);transition:transform .08s,box-shadow .08s}
.btn.chunky{box-shadow:0 5px 0 rgba(122,72,20,.16)}
.btn.chunky:active{transform:translateY(4px);box-shadow:0 1px 0 rgba(122,72,20,.16)}
.btn.primary{background:linear-gradient(135deg,#FF9A5C,#FF7A45);color:#fff;box-shadow:0 5px 0 var(--pri-dark)}
.btn.primary:active{box-shadow:0 1px 0 var(--pri-dark)}
.btn.ai{background:linear-gradient(135deg,#B79CFF,#8B5CF6);color:#fff;box-shadow:0 5px 0 #5B21B6}
.btn.ai:active{box-shadow:0 1px 0 #5B21B6}
.btn.teal{background:linear-gradient(135deg,#5FE0D2,#2EC4B6);color:#fff;box-shadow:0 5px 0 var(--teal-dark)}
.btn.teal:active{box-shadow:0 1px 0 var(--teal-dark)}
.btn.big{width:100%;padding:15px;font-size:17px;margin-top:12px;border-radius:18px}
.btn.danger{background:#FFE4E4;color:#DC2626;box-shadow:0 5px 0 #F5B5B5}
.btn.danger:active{box-shadow:0 1px 0 #F5B5B5}
.btn:disabled{opacity:.5}
.rowbtns{display:flex;gap:10px;margin-top:12px}
.rowbtns .btn{flex:1;padding:13px}

/* forms */
input,textarea,select{width:100%;border:2.5px solid #F0E6D2;border-radius:14px;padding:11px 13px;
  font-size:15px;margin:6px 0 12px;font-family:inherit;background:#FFFEFB;transition:border .15s;color:var(--tx)}
input:focus,textarea:focus{outline:none;border-color:var(--pri);background:#fff}
textarea{resize:vertical}
.input-row{display:flex;gap:8px;align-items:center}
.input-row input{flex:1;margin:6px 0}
.mic{flex:0 0 48px;height:48px;border-radius:50%;border:2.5px solid #F0E6D2;background:#fff;
  cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--mut)}
.mic.rec{background:#FFE4E4;border-color:#FF6B6B;color:#E53E3E;animation:blink 1s infinite}
@keyframes blink{50%{opacity:.5}}
.upload-btn{display:flex;flex-direction:column;align-items:center;gap:6px;border:3px dashed #FFB98A;
  border-radius:18px;padding:30px;color:var(--pri-dark);font-weight:800;cursor:pointer;background:#FFF7EF}
.tags{display:flex;flex-wrap:wrap;gap:9px;margin:8px 0 12px}
.tag{border:2.5px solid #F0E6D2;border-radius:20px;padding:8px 16px;font-size:13px;background:#fff;
  cursor:pointer;font-weight:700;transition:all .15s}
.tag.on{background:var(--pri);color:#fff;border-color:var(--pri-dark);box-shadow:0 3px 0 var(--pri-dark)}
.preview{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.preview img{width:88px;height:88px;object-fit:cover;border-radius:14px;border:3px solid #fff;
  box-shadow:var(--shadow)}

/* toolbar / list */
.toolbar{display:flex;gap:10px;margin-bottom:14px}
.search-wrap{flex:1;display:flex;align-items:center;gap:6px;background:#fff;border:2.5px solid #F0E6D2;
  border-radius:14px;padding:0 12px;color:var(--mut)}
.search-wrap input{border:0;background:none;margin:0;padding:11px 0}
.search-wrap input:focus{outline:none}
.toolbar select{width:112px;margin:0}
.mitem{background:#fff;border-radius:var(--r);padding:14px;margin-bottom:12px;
  box-shadow:var(--shadow);border:3px solid #fff;cursor:pointer;transition:transform .1s}
.mitem:active{transform:scale(.98)}
.mitem .t{font-weight:800;margin-bottom:6px;font-size:15px}
.mitem .meta{font-size:12px;color:var(--mut);display:flex;gap:6px;flex-wrap:wrap;align-items:center;font-weight:600}
.mitem img.thumb{width:100%;max-height:190px;object-fit:contain;border-radius:14px;margin-top:10px;background:#FFFBF3}
.pill{font-size:11px;padding:4px 11px;border-radius:20px;background:#F5EFE2;color:#8A7B5C;font-weight:700}
.pill.warn{background:#FFE8DC;color:#C2571B}
.pill.ok{background:#D8F5E3;color:#0E7A4D}

/* detail / review */
.qimg{width:100%;border-radius:16px;margin:10px 0;background:#FFFBF3;border:3px solid #fff;box-shadow:var(--shadow)}
.hidden-answer{background:#FFF7EF;border:3px dashed #FFB98A;border-radius:16px;
  padding:22px;text-align:center;color:var(--pri-dark);cursor:pointer;margin:10px 0;font-weight:800;
  display:flex;align-items:center;justify-content:center;gap:8px}
.ai-box{background:linear-gradient(160deg,#FAF7FF,#F3EFFF);border:2.5px solid #DDD0FA;border-radius:16px;
  padding:14px;margin:10px 0;font-size:14px;line-height:1.8;white-space:pre-wrap}
.ai-box b{color:var(--grape-dark)}
.variant{background:#FFFBEA;border:2.5px solid #FFE08A;border-radius:16px;padding:12px;margin:10px 0}
.qa{display:flex;flex-direction:column;gap:8px;margin:10px 0}
.qa .q{align-self:flex-end;background:linear-gradient(135deg,#FF9A5C,#FF7A45);color:#fff;
  border-radius:18px 18px 5px 18px;padding:9px 14px;max-width:85%;font-size:14px;font-weight:600;
  box-shadow:0 3px 0 var(--pri-dark)}
.qa .a{align-self:flex-start;background:#FFFEFB;border:2.5px solid #F0E6D2;
  border-radius:18px 18px 18px 5px;padding:9px 14px;max-width:88%;white-space:pre-wrap;font-size:14px}
.bar{height:12px;background:#F5EFE2;border-radius:8px;overflow:hidden;margin:6px 0 12px}
.bar i{display:block;height:100%;background:linear-gradient(90deg,#FFD93D,#FF7A45);border-radius:8px;
  transition:width .6s}
.done-wrap{text-align:center;padding:44px 16px}
.done-icon{width:84px;height:84px;margin:0 auto 14px;border-radius:28px;background:#D8F5E3;
  color:#0E7A4D;display:flex;align-items:center;justify-content:center;animation:bob 2s ease-in-out infinite}
.stat{text-align:center}
.stat-icon{width:46px;height:46px;margin:0 auto 8px;border-radius:15px;display:flex;align-items:center;justify-content:center}
.stat-icon.blue{background:#D8EEFF;color:#0284C7}
.stat-icon.yellow{background:#FFF3C4;color:#D99A00}
.stat .n{font-size:30px;font-weight:800}
.stat .l{color:var(--mut);font-size:12px;margin-top:2px;font-weight:700}
.stat.mini{padding:6px}
.war{background:linear-gradient(160deg,#fff,#FFF8E1)}

/* bottom nav */
nav{position:fixed;bottom:0;left:0;right:0;background:rgba(255,255,255,.97);backdrop-filter:blur(12px);
  border-top:3px solid #F5EFE2;display:flex;z-index:10;padding:6px 6px calc(10px + env(safe-area-inset-bottom))}
nav button{flex:1;border:0;background:none;padding:7px 0;font-size:23px;color:#C9BFA9;cursor:pointer;
  display:flex;flex-direction:column;align-items:center;gap:3px;border-radius:14px}
nav button span{font-size:11px;font-weight:700}
nav button.on{color:var(--pri-dark)}
nav button.fab{color:var(--pri)}
nav button.fab.on{color:var(--pri-dark)}