/* ============ 基础与变量 ============ */
:root{
  --bg1:#fef6ff; --bg2:#e8f6ff; --bg3:#fff7e6;
  --primary:#ff7eb3; --primary-d:#ff5e9c;
  --blue:#5b8def; --blue-d:#3f6fd6;
  --green:#3ec98b; --green-d:#2ea873;
  --orange:#ff9f43; --orange-d:#f0831a;
  --purple:#9b6bff; --yellow:#ffd43b;
  --ink:#3a3357; --ink-soft:#6f6892; --line:#ece6f7;
  --card:#ffffff; --shadow:0 10px 30px rgba(120,90,180,.12);
  --radius:22px;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:"PingFang SC","Microsoft YaHei","Comic Sans MS",-apple-system,"Segoe UI",sans-serif;
  color:var(--ink);
  background:linear-gradient(135deg,var(--bg1),var(--bg2) 50%,var(--bg3));
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  min-height:100vh;
  overflow:hidden;
}
button{font-family:inherit;cursor:pointer;border:none;background:none}
.app{display:flex;flex-direction:column;height:100vh}

/* ============ 顶部条 ============ */
.topbar{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 22px;background:rgba(255,255,255,.75);
  backdrop-filter:blur(8px);border-bottom:2px solid var(--line);
  z-index:5;
}
.brand{display:flex;align-items:center;gap:12px}
.brand-logo{font-size:34px;filter:drop-shadow(0 4px 6px rgba(255,126,179,.4))}
.brand-text h1{font-size:21px;font-weight:800;letter-spacing:.5px}
.brand-text p{font-size:13px;color:var(--ink-soft);margin-top:2px}
.topbar-right{display:flex;align-items:center;gap:14px}
.streak{display:flex;align-items:center;gap:5px;background:#fff;padding:7px 14px;border-radius:30px;
  font-weight:800;color:var(--orange-d);box-shadow:var(--shadow);font-size:14px}
.streak-fire{font-size:16px}
.clock{background:linear-gradient(135deg,var(--blue),var(--purple));color:#fff;font-weight:800;
  padding:7px 16px;border-radius:30px;box-shadow:var(--shadow);font-size:15px;letter-spacing:1px}

/* ============ 主体布局 ============ */
.body{flex:1;display:flex;overflow:hidden}

/* ============ 左侧导航 ============ */
.sidebar{
  width:208px;flex-shrink:0;background:rgba(255,255,255,.7);
  backdrop-filter:blur(8px);padding:16px 12px;display:flex;flex-direction:column;gap:8px;
  border-right:2px solid var(--line);overflow-y:auto;
}
.nav-btn{
  display:flex;align-items:center;gap:12px;padding:13px 14px;border-radius:18px;
  font-size:15px;font-weight:700;color:var(--ink-soft);transition:.18s;text-align:left;
  position:relative;
}
.nav-btn .nav-ico{font-size:22px;width:30px;text-align:center}
.nav-btn:hover{background:#fff;transform:translateX(3px);color:var(--ink)}
.nav-btn.active{
  background:linear-gradient(135deg,var(--primary),var(--purple));color:#fff;
  box-shadow:0 8px 18px rgba(255,126,179,.4);transform:translateX(3px);
}
.nav-btn .badge{
  position:absolute;right:10px;top:50%;transform:translateY(-50%);
  background:var(--orange);color:#fff;font-size:11px;font-weight:800;border-radius:20px;
  min-width:20px;height:20px;display:flex;align-items:center;justify-content:center;padding:0 5px;
}
.badge[hidden]{display:none}
.sidebar-foot{margin-top:auto;padding-top:12px}
.progress-mini{background:#fff;border-radius:18px;padding:12px;box-shadow:var(--shadow);font-size:12px;color:var(--ink-soft)}
.progress-mini .bar{height:10px;background:#f0ecf8;border-radius:10px;margin:7px 0;overflow:hidden}
.progress-mini .bar-fill{height:100%;width:0;background:linear-gradient(90deg,var(--green),var(--yellow));transition:width .5s;border-radius:10px}
.progress-mini span{font-weight:700}

/* ============ 内容区 ============ */
.content{flex:1;overflow-y:auto;padding:24px 30px 60px}
.view-title{display:flex;align-items:center;gap:12px;margin-bottom:6px}
.view-title h2{font-size:25px;font-weight:800}
.view-title .vt-ico{font-size:30px}
.view-sub{color:var(--ink-soft);font-size:14px;margin-bottom:20px}

/* ============ 通用卡片 ============ */
.grid{display:grid;gap:18px}
.cards{grid-template-columns:repeat(auto-fill,minmax(230px,1fr))}
.card{
  background:var(--card);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);
  transition:.18s;border:2px solid transparent;
}
.card:hover{transform:translateY(-4px);border-color:var(--line)}
.ch-tab{transition:.16s}
.ch-tab:not(.ch-tab-off){border-color:var(--primary);background:linear-gradient(135deg,#fff0f6,#fdeaff)}
.ch-tab-off{opacity:.7}
.card .c-ico{font-size:34px;margin-bottom:10px}
.card h3{font-size:18px;margin-bottom:6px}
.card p{font-size:13px;color:var(--ink-soft);line-height:1.6}
.card .c-btn{margin-top:14px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  padding:11px 20px;border-radius:16px;font-size:15px;font-weight:800;transition:.16s;color:#fff;
  box-shadow:0 6px 14px rgba(0,0,0,.12);
}
.btn:active{transform:scale(.96)}
.btn-pink{background:linear-gradient(135deg,var(--primary),var(--primary-d))}
.btn-blue{background:linear-gradient(135deg,var(--blue),var(--blue-d))}
.btn-green{background:linear-gradient(135deg,var(--green),var(--green-d))}
.btn-orange{background:linear-gradient(135deg,var(--orange),var(--orange-d))}
.btn-purple{background:linear-gradient(135deg,var(--purple),#7a4cff)}
.btn-ghost{background:#fff;color:var(--ink);border:2px solid var(--line);box-shadow:none}
.btn-ghost:hover{background:#faf7ff}
.btn-sm{padding:8px 14px;font-size:13px;border-radius:12px}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.btn-block{width:100%}

/* ============ 每日任务 ============ */
.hero{
  background:linear-gradient(120deg,#fff0f6,#eef3ff 60%,#eafff4);
  border-radius:26px;padding:22px 26px;margin-bottom:22px;display:flex;align-items:center;gap:20px;
  box-shadow:var(--shadow);border:2px solid #fff;
}
.hero .hero-emoji{font-size:60px;animation:bob 3s ease-in-out infinite}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.hero h2{font-size:23px;margin-bottom:6px}
.hero p{color:var(--ink-soft);font-size:14px}
.hero .hero-prog{flex:1;max-width:340px}
.ring{position:relative;width:96px;height:96px;flex-shrink:0}
.ring svg{transform:rotate(-90deg)}
.ring .ring-txt{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;font-weight:800}
.ring .ring-txt b{font-size:22px;color:var(--primary-d)}
.ring .ring-txt small{font-size:11px;color:var(--ink-soft)}

.task-list{display:flex;flex-direction:column;gap:12px}
.task-row{
  display:flex;align-items:center;gap:16px;background:#fff;border-radius:18px;padding:15px 18px;
  box-shadow:var(--shadow);transition:.16s;
}
.task-row:hover{transform:translateX(3px)}
.task-check{
  width:30px;height:30px;border-radius:10px;border:3px solid var(--green);flex-shrink:0;
  display:flex;align-items:center;justify-content:center;color:#fff;font-weight:900;transition:.16s;background:#fff;
}
.task-row.done .task-check{background:var(--green);border-color:var(--green)}
.task-row.done .task-name{text-decoration:line-through;color:var(--ink-soft)}
.task-info{flex:1}
.task-name{font-size:16px;font-weight:700}
.task-desc{font-size:12.5px;color:var(--ink-soft);margin-top:3px}
.task-emoji{font-size:26px}
.task-row .go{opacity:0;transition:.16s}
.task-row:hover .go{opacity:1}

/* ============ 语文：跟读 ============ */
.reader{border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);margin-bottom:18px;color:#fff}
.reader.r1{background:linear-gradient(135deg,#ff9a9e,#fad0c4)}
.reader.r2{background:linear-gradient(135deg,#a18cd1,#fbc2eb)}
.reader.r3{background:linear-gradient(135deg,#84fab0,#8fd3f4)}
.reader h3{font-size:20px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.reader .passage{font-size:19px;line-height:2;font-weight:600;white-space:pre-wrap}
.reader-acts{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap}
.reader .chip{background:rgba(255,255,255,.28);border-radius:30px;padding:5px 14px;font-size:13px;font-weight:700}
.record-box{background:#fff;border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);margin-top:14px}
.record-box .rb-line{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.rec-btn{width:54px;height:54px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-d));
  color:#fff;font-size:24px;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 14px rgba(255,126,179,.5)}
.rec-btn.live{animation:pulse 1.2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(255,126,179,.6)}70%{box-shadow:0 0 0 16px rgba(255,126,179,0)}100%{box-shadow:0 0 0 0 rgba(255,126,179,0)}}
.rb-status{font-size:13px;color:var(--ink-soft)}

/* ============ 看图写话 ============ */
.scene{
  border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);text-align:center;position:relative;overflow:hidden;
  background:linear-gradient(160deg,#e0f7ff,#fef9e7);
}
.scene .scene-art{font-size:54px;line-height:1.5;letter-spacing:6px;margin:10px 0 4px}
.scene .scene-cap{font-size:13px;color:var(--ink-soft);font-weight:700}
.write-area{background:#fff;border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);margin-top:16px}
.write-area label{font-weight:800;font-size:15px;display:block;margin-bottom:10px}
.write-area textarea{
  width:100%;min-height:120px;border:2px solid var(--line);border-radius:14px;padding:14px;
  font-size:16px;font-family:inherit;resize:vertical;outline:none;transition:.16s;
}
.write-area textarea:focus{border-color:var(--primary)}
.word-bank{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}
.word-bank .wb{background:#fff3f8;border:2px solid #ffd6e8;color:var(--primary-d);border-radius:30px;
  padding:6px 13px;font-size:14px;font-weight:700;cursor:pointer;transition:.14s}
.word-bank .wb:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.example-box{background:#f6fff9;border:2px dashed var(--green);border-radius:14px;padding:14px;margin-top:12px;font-size:14px;line-height:1.7}
.example-box b{color:var(--green-d)}

/* ============ 数学互动 ============ */
.quiz-card{background:#fff;border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);text-align:center}
.quiz-card .q-prompt{font-size:16px;color:var(--ink-soft);margin-bottom:8px}
.quiz-card .q-main{font-size:40px;font-weight:800;margin:14px 0;letter-spacing:2px}
.shapes-row{display:flex;justify-content:center;gap:18px;margin:20px 0;flex-wrap:wrap}
.shape-opt{width:90px;height:90px;border-radius:18px;background:#faf7ff;border:3px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-size:30px;cursor:pointer;transition:.14s}
.shape-opt:hover{border-color:var(--blue);transform:scale(1.05)}
.shape-opt.correct{background:#e8fff3;border-color:var(--green)}
.shape-opt.wrong{background:#fff0f0;border-color:#ff7676}
.tf-row{display:flex;justify-content:center;gap:16px;margin:20px 0}
.opts-row{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin:18px 0}
.opt-btn{background:#faf7ff;border:3px solid var(--line);border-radius:16px;padding:14px 26px;font-size:22px;font-weight:800;transition:.14s;min-width:80px}
.opt-btn:hover{border-color:var(--blue);transform:translateY(-3px)}
.opt-btn.correct{background:#e8fff3;border-color:var(--green);color:var(--green-d)}
.opt-btn.wrong{background:#fff0f0;border-color:#ff7676;color:#d63031}
.feedback{font-size:18px;font-weight:800;min-height:28px;margin-top:8px}
.feedback.ok{color:var(--green-d)}.feedback.no{color:#d63031}
.q-progress{font-size:13px;color:var(--ink-soft);margin-top:6px}

/* ============ 英语对话 ============ */
.conv-card{background:#fff;border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);margin-bottom:16px}
.conv-scene{display:inline-flex;align-items:center;gap:8px;background:#fff3f8;color:var(--primary-d);
  font-weight:800;padding:6px 14px;border-radius:30px;font-size:13px;margin-bottom:14px}
.bubble-row{display:flex;gap:10px;margin:10px 0;align-items:flex-end}
.bubble-row.me{flex-direction:row-reverse}
.bubble{max-width:72%;padding:11px 15px;border-radius:16px;font-size:15px;line-height:1.5}
.bubble.ai{background:#f1f0ff;border-bottom-left-radius:4px}
.bubble.me{background:linear-gradient(135deg,var(--primary),var(--primary-d));color:#fff;border-bottom-right-radius:4px}
.bubble .who{font-size:11px;opacity:.7;display:block;margin-bottom:3px;font-weight:700}
.bubble .speak{margin-left:8px;font-size:13px;cursor:pointer;opacity:.7}
.bubble .speak:hover{opacity:1}
.practice-box{background:#f6f9ff;border-radius:16px;padding:16px;margin-top:14px}
.practice-box .pb-q{font-size:16px;font-weight:800;margin-bottom:12px}

/* ============ 益智游戏 ============ */
.mem-board{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;max-width:420px;margin:18px auto}
.mem-card{aspect-ratio:1;border-radius:16px;background:linear-gradient(135deg,var(--blue),var(--purple));
  display:flex;align-items:center;justify-content:center;font-size:34px;cursor:pointer;color:#fff;
  box-shadow:0 6px 12px rgba(91,141,239,.35);transition:transform .25s;transform-style:preserve-3d;user-select:none}
.mem-card.flip{background:#fff;color:var(--ink);transform:rotateY(180deg)}
.mem-card.matched{background:linear-gradient(135deg,var(--green),var(--green-d));color:#fff;opacity:.85}
.riddle-card{background:#fff;border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);text-align:center}
.riddle-card .rid-q{font-size:22px;font-weight:800;margin:10px 0 20px;line-height:1.6}
.cls-game{display:flex;gap:18px;flex-wrap:wrap;justify-content:center;margin-top:16px}
.cls-bin{background:#faf7ff;border:3px dashed var(--line);border-radius:18px;padding:14px;width:200px;min-height:160px;text-align:center}
.cls-bin h4{font-size:15px;margin-bottom:10px}
.cls-item{display:inline-flex;align-items:center;gap:4px;background:#fff;border:2px solid var(--line);border-radius:30px;
  padding:7px 12px;margin:5px;font-size:15px;font-weight:700;cursor:grab;box-shadow:var(--shadow)}
.cls-item.dragging{opacity:.5}
.pinyin-game{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:16px}
.py-card{background:#fff;border:3px solid var(--line);border-radius:16px;padding:14px 20px;font-size:26px;font-weight:800;cursor:pointer;transition:.14s}
.py-card:hover{border-color:var(--orange);transform:translateY(-3px)}
.py-card.picked{background:var(--orange);color:#fff;border-color:var(--orange)}
.game-score{text-align:center;font-size:16px;font-weight:800;color:var(--ink-soft);margin:10px 0}
.game-score b{color:var(--orange-d);font-size:20px}

/* ============ 口算 ============ */
.arith-set{background:#fff;border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);margin-bottom:18px}
.arith-set .set-row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.chip-pick{background:#faf7ff;border:2px solid var(--line);border-radius:30px;padding:8px 16px;font-weight:700;font-size:14px;transition:.14s;cursor:pointer}
.chip-pick.active{background:linear-gradient(135deg,var(--green),var(--green-d));color:#fff;border-color:transparent}
.arith-main{background:linear-gradient(135deg,#fff7e6,#ffeef6);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow);text-align:center}
.arith-q{font-size:48px;font-weight:800;letter-spacing:3px;margin:10px 0}
.arith-input{font-size:30px;width:140px;text-align:center;border:3px solid var(--line);border-radius:16px;padding:8px;outline:none;font-family:inherit;font-weight:800}
.arith-input:focus{border-color:var(--primary)}
.arith-stats{display:flex;justify-content:center;gap:30px;margin-top:18px;flex-wrap:wrap}
.arith-stats .st{text-align:center}
.arith-stats .st b{display:block;font-size:26px;color:var(--primary-d)}
.arith-stats .st span{font-size:12px;color:var(--ink-soft)}

/* ============ 提醒 ============ */
.remind-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px}
.remind-card{background:#fff;border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);border-top:6px solid var(--blue)}
.remind-card.exercise{border-top-color:var(--green)}
.remind-card.eye{border-top-color:var(--blue)}
.remind-card.water{border-top-color:var(--orange)}
.remind-card.read{border-top-color:var(--purple)}
.remind-card h3{font-size:18px;display:flex;align-items:center;gap:8px;margin-bottom:8px}
.remind-card p{font-size:13.5px;color:var(--ink-soft);line-height:1.7}
.timer-big{font-size:40px;font-weight:800;text-align:center;margin:14px 0;letter-spacing:2px}
.timer-big.done{color:var(--green-d)}
.toggle-row{display:flex;align-items:center;gap:10px;margin-top:12px}
.switch{position:relative;width:50px;height:28px;background:#ddd;border-radius:30px;transition:.2s;cursor:pointer;flex-shrink:0}
.switch.on{background:var(--green)}
.switch::after{content:"";position:absolute;width:22px;height:22px;background:#fff;border-radius:50%;top:3px;left:3px;transition:.2s;box-shadow:0 2px 4px rgba(0,0,0,.2)}
.switch.on::after{left:25px}

/* ============ Toast ============ */
.toast-wrap{position:fixed;right:24px;bottom:24px;display:flex;flex-direction:column;gap:10px;z-index:50}
.toast{background:#fff;border-radius:16px;padding:14px 18px;box-shadow:0 12px 30px rgba(0,0,0,.18);
  display:flex;align-items:center;gap:10px;font-weight:700;font-size:14px;animation:slideIn .3s;max-width:300px}
.toast .t-ico{font-size:22px}
@keyframes slideIn{from{transform:translateX(120%);opacity:0}to{transform:translateX(0);opacity:1}}

/* ============ 录音遮罩 ============ */
.rec-mask{position:fixed;inset:0;background:rgba(58,51,87,.45);backdrop-filter:blur(3px);z-index:60;
  display:flex;align-items:center;justify-content:center}
.rec-mask[hidden]{display:none}
.rec-card{background:#fff;border-radius:24px;padding:30px 40px;text-align:center;box-shadow:var(--shadow)}
.rec-dot{width:70px;height:70px;border-radius:50%;background:var(--primary);margin:0 auto 16px;animation:pulse 1.2s infinite}
.rec-card p{font-size:16px;font-weight:700;margin:4px 0}
.rec-hint{color:var(--ink-soft)!important;font-weight:600!important;font-size:13px!important;min-height:18px}

/* ============ 滚动条 ============ */
.sidebar::-webkit-scrollbar,.content::-webkit-scrollbar{width:8px}
.sidebar::-webkit-scrollbar-thumb,.content::-webkit-scrollbar-thumb{background:#e0d8f0;border-radius:8px}

/* ============ 响应式 ============ */
@media(max-width:720px){
  .sidebar{width:74px}
  .nav-label{display:none}
  .sidebar-foot{display:none}
  .nav-btn{justify-content:center}
  .content{padding:16px}
  .hero{flex-wrap:wrap}
}