/* 背单词打卡 - 儿童友好主题 */
:root{
  --primary:#6366f1; --primary-2:#818cf8; --primary-deep:#4f46e5;
  --ok:#22c55e; --ok-bg:#e8f9ef;
  --bad:#ef4444; --bad-bg:#fdecec;
  --warn:#f59e0b; --warn-bg:#fef3e2;
  --bg:#f4f5ff; --card:#ffffff; --line:#e5e7f5;
  --ink:#1e2340; --ink-2:#5b6185; --ink-3:#959bc0;
  --radius:20px; --tabbar-h:64px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{height:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","MiSans","Microsoft YaHei",sans-serif;
  display:flex;flex-direction:column;overflow:hidden;
  user-select:none;-webkit-user-select:none;
}
input,textarea{user-select:text;-webkit-user-select:text}
.app-header{
  flex:none;display:flex;align-items:center;justify-content:space-between;
  padding:12px 14px;background:linear-gradient(135deg,#6366f1,#8b5cf6);
  color:#fff;
}
.header-brand{display:flex;align-items:center;gap:8px;font-weight:800;font-size:18px}
.header-logo{font-size:20px}
.header-right{display:flex;align-items:center;gap:8px}
.standalone-tag{font-size:11px;background:rgba(255,255,255,.22);padding:3px 8px;border-radius:99px}
.icon-btn{border:0;background:rgba(255,255,255,.18);color:#fff;width:38px;height:38px;border-radius:12px;font-size:18px;cursor:pointer}
.icon-btn.dark{background:#eee9ff;color:var(--primary-deep)}
.icon-btn.danger{background:var(--bad-bg);color:var(--bad)}
main{flex:1 1 auto;min-height:0;overflow-y:auto;-webkit-overflow-scrolling:touch;width:100%;max-width:620px;margin:0 auto;padding:12px 12px calc(var(--tabbar-h) + 80px + env(safe-area-inset-bottom,0px));}
.tabbar{
  flex:none;display:flex;width:100%;max-width:620px;margin:0 auto;background:#fff;
  border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom,0px);
}
.tab{flex:1;border:0;background:none;padding:8px 0 10px;font-size:12px;color:var(--ink-2);cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:2px}
.tab .ti{font-size:20px;line-height:1}
.tab.active{color:var(--primary);font-weight:700}
.badge{position:absolute;background:var(--bad);color:#fff;font-size:10px;font-style:normal;border-radius:99px;padding:0 4px;min-width:16px}
.hidden{display:none!important}

/* 通用按钮 */
.btn{border:0;border-radius:14px;padding:12px 18px;font-size:16px;font-weight:700;cursor:pointer;transition:transform .05s}
.btn:active{transform:scale(.97)}
.btn-primary{background:linear-gradient(135deg,#6366f1,#8b5cf6);color:#fff}
.btn-ghost{background:#eee9ff;color:var(--primary-deep)}
.btn-danger{background:var(--bad);color:#fff}
.btn-sm{padding:8px 12px;font-size:13px;border-radius:10px}
.btn-row{display:flex;gap:8px;flex-wrap:wrap}
.file-btn{display:inline-flex;align-items:center;gap:6px}

/* 首页 */
.kid-switch{display:flex;gap:8px;margin-bottom:10px;overflow-x:auto}
.kid-pill{display:flex;align-items:center;gap:6px;border:2px solid transparent;background:#fff;border-radius:99px;padding:6px 14px 6px 6px;font-size:14px;font-weight:700;color:var(--ink-2);cursor:pointer;flex:none}
.kid-pill .ava{width:30px;height:30px;border-radius:50%;background:#f0f1ff;display:flex;align-items:center;justify-content:center;font-size:17px}
.kid-pill.active{border-color:var(--primary);color:var(--primary-deep);background:#f0f1ff}
.hero-card{background:linear-gradient(150deg,#4f46e5,#7c3aed 55%,#a855f7);border-radius:24px;padding:18px;color:#fff;box-shadow:0 10px 24px rgba(99,102,241,.35)}
.hero-row{display:flex;justify-content:space-between;align-items:center}
.hero-date{font-size:13px;opacity:.85}
.hero-count{font-size:30px;font-weight:900;margin:4px 0}
.hero-sub{font-size:13px;opacity:.9}
.btn-start{width:100%;margin-top:14px;background:#fff;color:var(--primary-deep);font-size:19px;padding:14px;border-radius:16px}
.stat-row{display:flex;gap:8px;margin-top:12px}
.stat-cell{flex:1;background:#fff;border-radius:16px;padding:10px 6px;text-align:center}
.stat-cell .sv{font-size:20px;font-weight:900;color:var(--primary-deep)}
.stat-cell .sl{font-size:11px;color:var(--ink-3);margin-top:2px}
.quick-row{display:flex;gap:8px;margin-top:12px}
.q-card{flex:1;background:#fff;border:0;border-radius:16px;padding:12px 4px;cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:4px}
.q-card .q-emoji{font-size:22px}
.q-card .q-t{font-size:12px;color:var(--ink-2);font-weight:600}
.q-card .q-n{font-size:11px;color:var(--ink-3)}
.streak-card{margin-top:12px;background:#fff;border-radius:16px;padding:12px 16px;font-size:14px;color:var(--ink-2);display:flex;align-items:center;gap:10px}
.reward-progress{margin-top:12px;background:#fff;border-radius:16px;padding:14px 16px}
.rp-title{font-size:13px;color:var(--ink-2);font-weight:700}
.rp-text{font-size:14px;margin:6px 0 4px;font-weight:700}
.rp-bar{height:12px;background:#eee9ff;border-radius:99px;overflow:hidden}
.rp-bar-in{height:100%;background:linear-gradient(90deg,#f59e0b,#fbbf24);border-radius:99px;transition:width .3s}
.reward-banner{margin-top:12px;background:linear-gradient(135deg,#f59e0b,#f97316);color:#fff;border-radius:16px;padding:12px 16px;font-weight:800;text-align:center}

/* 词库/记录通用头 */
.view-head{display:flex;align-items:center;justify-content:space-between;margin:4px 0 10px}
.view-head h2{margin:0;font-size:19px}
.cat-tip{background:#f0f1ff;border-radius:14px;padding:10px 12px;font-size:12px;color:var(--ink-2);line-height:1.6;margin:0 0 12px}
.seg{display:flex;background:#e8e9fb;border-radius:14px;padding:4px;margin-bottom:12px}
.seg-btn{flex:1;border:0;background:none;border-radius:11px;padding:9px;font-size:14px;font-weight:700;color:var(--ink-2);cursor:pointer}
.seg-btn.active{background:#fff;color:var(--primary-deep);box-shadow:0 2px 6px rgba(0,0,0,.08)}

/* 书列表 & 词列表 */
.book-card{background:#fff;border-radius:18px;padding:14px;margin-bottom:10px;display:flex;align-items:center;gap:12px;cursor:pointer}
.book-emoji{font-size:26px;background:#f0f1ff;border-radius:14px;width:52px;height:52px;display:flex;align-items:center;justify-content:center}
.book-info{flex:1;min-width:0}
.book-name{font-weight:800;font-size:16px}
.book-meta{font-size:12px;color:var(--ink-3);margin-top:2px}
.word-list .w-row{background:#fff;border-radius:14px;padding:10px 12px;margin-bottom:8px;display:flex;align-items:center;gap:10px}
.w-row .w-en{font-weight:800;font-size:15px}
.w-row .w-ipa{font-size:12px;color:var(--ink-3);margin-left:6px;font-weight:400}
.w-row .w-zh{font-size:14px;color:var(--ink-2)}
.w-row .w-unit{font-size:10px;color:#fff;background:#c7cbfb;border-radius:6px;padding:1px 6px}
.w-row .w-del{border:0;background:var(--bad-bg);color:var(--bad);border-radius:10px;width:34px;height:34px;font-size:15px;cursor:pointer;flex:none}
.w-row .w-tag{font-size:10px;border-radius:6px;padding:1px 5px;margin-left:6px}
.w-tag.pend{background:var(--warn-bg);color:#b45309}
.w-row.pending{background:#fffdf3}
.w-row small{color:var(--ink-3)}
.bm-toolbar{display:flex;gap:6px;align-items:center;margin-bottom:10px;flex-wrap:wrap}
.bm-toolbar input{flex:1;min-width:120px;border:1px solid var(--line);border-radius:10px;padding:8px 10px;font-size:14px}
.enrich-bar{display:flex;gap:8px;align-items:center;background:var(--warn-bg);border-radius:12px;padding:8px 10px;margin-bottom:10px;font-size:13px;color:#92400e}

/* 设置 */
.settings-scroll{max-height:62vh;overflow-y:auto;-webkit-overflow-scrolling:touch}
.settings-block{border-bottom:8px solid var(--bg);padding:4px 0 14px}
.settings-label{font-weight:800;font-size:15px;margin-bottom:8px;color:var(--ink)}
.hint{font-size:12px;color:var(--ink-3);line-height:1.6;margin:4px 0 8px}
.kid-man-row{display:flex;align-items:center;gap:8px;background:#f6f6ff;border-radius:12px;padding:8px 10px;margin-bottom:8px}
.kid-man-row input[type=text]{flex:1;border:1px solid var(--line);border-radius:9px;padding:7px 9px;font-size:14px}
.kid-man-row .ava-pick{font-size:20px;border:0;background:none;cursor:pointer}
.kid-man-row .icon-btn{border-radius:9px;font-size:14px}
.rew-row{display:flex;align-items:center;gap:8px;background:#f6f6ff;border-radius:12px;padding:8px 10px;margin-bottom:6px;font-size:14px}
.rew-row .r-goal{font-weight:800;color:var(--warn)}
.rew-row .r-txt{flex:1;color:var(--ink-2)}
.rew-row select{border:1px solid var(--line);border-radius:8px;padding:4px;font-size:12px;background:#fff}
.rew-add{display:flex;gap:6px;margin-top:6px}
.rew-add input{flex:1;min-width:0;border:1px solid var(--line);border-radius:10px;padding:8px;font-size:13px}
.voice-check{font-size:13px;color:var(--ink-2);background:#f6f6ff;border-radius:12px;padding:8px 10px;margin-bottom:8px;line-height:1.7}
.about-line{font-size:12px;color:var(--ink-3)}

/* modal 通用 */
.modal{position:fixed;inset:0;background:rgba(20,20,50,.45);display:flex;align-items:flex-end;justify-content:center;z-index:40}
.modal.big{align-items:center;padding:12px}
.modal-card{background:#fff;border-radius:22px 22px 0 0;width:100%;max-width:620px;max-height:88vh;display:flex;flex-direction:column;animation:up .18s ease}
.modal.big .modal-card{border-radius:22px;max-height:92vh}
@keyframes up{from{transform:translateY(30px);opacity:.5}to{transform:none;opacity:1}}
.modal-card-sm{max-width:340px;border-radius:22px}
.modal-card-wide{max-width:560px}
.modal-head{display:flex;align-items:center;justify-content:space-between;padding:16px 18px 8px;flex:none}
.modal-head h3{margin:0;font-size:18px}
.modal-head .icon-btn{color:var(--ink-3);background:#f1f1f8}
.modal-body{padding:8px 18px 14px;overflow-y:auto;-webkit-overflow-scrolling:touch}
.modal-foot{display:flex;gap:10px;justify-content:flex-end;padding:10px 18px calc(14px + env(safe-area-inset-bottom,0px));flex:none;border-top:1px solid var(--bg)}
.modal-foot .btn{flex:1}
.field{display:flex;flex-direction:column;gap:5px;margin-bottom:10px;font-size:13px;color:var(--ink-2);font-weight:600}
.field input,.field select,.field textarea{border:1px solid var(--line);border-radius:12px;padding:11px 12px;font-size:16px;color:var(--ink);background:#fff;width:100%}
.field textarea{font-size:14px;line-height:1.7;resize:vertical}
.field.grow{flex:1;min-width:0}
.field-row{display:flex;gap:10px;align-items:flex-start}
.check{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);font-weight:600;margin:4px 0}
.check input{width:20px;height:20px;accent-color:var(--primary)}
.chips{display:flex;gap:8px}
.chips.wrap{flex-wrap:wrap}
.chip{border:2px solid var(--line);background:#fff;border-radius:99px;padding:8px 14px;font-size:14px;font-weight:700;color:var(--ink-2);cursor:pointer;flex:none}
.chip.active{border-color:var(--primary);background:#f0f1ff;color:var(--primary-deep)}
.stepper{display:flex;align-items:center;gap:14px}
.step-btn{width:40px;height:40px;border-radius:12px;border:2px solid var(--line);background:#fff;font-size:22px;font-weight:900;color:var(--primary-deep);cursor:pointer}
.today-n{font-size:15px;font-weight:800;color:var(--primary-deep);padding:10px 0}
.sm-preview{background:#f6f6ff;border-radius:12px;padding:10px 12px;font-size:13px;color:var(--ink-2);line-height:1.7}
.center{text-align:center}
.empty-tip{text-align:center;color:var(--ink-3);padding:36px 10px;line-height:1.8;font-size:14px;white-space:pre-line}
#hero-progress-ring{width:86px;height:86px;border-radius:50%;display:flex;align-items:center;justify-content:center;padding:7px;flex:none}
.ring-in{width:100%;height:100%;border-radius:50%;background:rgba(255,255,255,.92);color:var(--primary-deep);display:flex;flex-direction:column;align-items:center;justify-content:center}
.ring-in b{font-size:20px;line-height:1.1}
.ring-in span{font-size:10px;color:var(--ink-3);font-weight:600}
.rec-sess:hover{background:#fafaff}
.push-state{display:block;font-size:12px;color:var(--ink-3);margin-top:6px;line-height:1.6}
.push-log{background:#f6f6ff;border-radius:10px;padding:8px;font-size:12px;color:var(--ink-3);margin-top:6px;white-space:pre-wrap}
.imp-preview{background:#f6f6ff;border-radius:12px;padding:10px;font-size:12px;color:var(--ink-2);max-height:130px;overflow-y:auto;white-space:pre-wrap}
.word-list{max-height:56vh;overflow-y:auto;-webkit-overflow-scrolling:touch}

/* 记录面板 */
.rec-day{background:#fff;border-radius:16px;padding:10px 14px;margin-bottom:10px}
.rec-day-head{display:flex;justify-content:space-between;align-items:center;font-weight:800;font-size:14px;padding:6px 0}
.rec-sess{border-top:1px dashed var(--line);padding:8px 0}
.rec-sess-top{display:flex;align-items:center;gap:8px;font-size:13px;flex-wrap:wrap}
.rec-tag{background:#f0f1ff;color:var(--primary-deep);font-size:11px;border-radius:7px;padding:2px 7px;font-weight:700}
.rec-tag.ok{background:var(--ok-bg);color:#15803d}
.rec-tag.bad{background:var(--bad-bg);color:#b91c1c}
.rec-tag.pend{background:var(--warn-bg);color:#b45309}
.rec-meta{font-size:11px;color:var(--ink-3)}
.wb-row{background:#fff;border-radius:16px;padding:10px 12px;margin-bottom:8px}
.wb-top{display:flex;align-items:center;gap:10px}
.wb-en{font-weight:900;font-size:16px}
.wb-right{margin-left:auto;display:flex;gap:6px;align-items:center}
.wb-btn{border:0;border-radius:10px;padding:8px 12px;font-size:12px;font-weight:700;cursor:pointer}
.wb-btn.learn{background:linear-gradient(135deg,#6366f1,#8b5cf6);color:#fff}
.wb-btn.del{background:var(--bad-bg);color:var(--bad)}
.wb-meta{font-size:12px;color:var(--ink-3);margin-top:4px}

/* 背诵全屏 */
.study-overlay{position:fixed;inset:0;background:linear-gradient(170deg,#eef0ff,#fdf6ff);z-index:60;display:flex;flex-direction:column}
#study-top{display:flex;align-items:center;gap:10px;padding:10px 12px;background:#fff;box-shadow:0 2px 10px rgba(0,0,0,.05);flex:none}
#study-top .icon-btn{background:#f1f1f8;color:var(--ink-3);border-radius:10px}
.st-progress{flex:1;height:10px;background:#e9e9f8;border-radius:99px;overflow:hidden}
.st-progress-inner{height:100%;width:0;background:linear-gradient(90deg,#6366f1,#a855f7);border-radius:99px;transition:width .3s}
#st-count{font-size:13px;font-weight:800;color:var(--ink-2);min-width:56px;text-align:center}
#st-mode-tag{background:#f0f1ff;color:var(--primary-deep);font-size:12px;font-weight:800;border-radius:99px;padding:4px 10px;flex:none;display:flex;gap:6px;align-items:center}
#study-q{flex:1 1 auto;min-height:0;overflow-y:auto;-webkit-overflow-scrolling:touch;display:flex;flex-direction:column;padding:10px 14px 0}
.q-stage{width:100%;max-width:560px;margin:0 auto;display:flex;flex-direction:column;flex:1}
.q-mode-switch{display:flex;justify-content:center;margin:4px 0 6px}
.q-mode-switch button{border:2px dashed #c7cbfb;background:#fff;color:var(--primary-deep);border-radius:99px;padding:7px 14px;font-size:13px;font-weight:700;cursor:pointer}
.q-card-big{background:#fff;border-radius:24px;padding:26px 18px;text-align:center;box-shadow:0 8px 24px rgba(99,102,241,.12);position:relative}
.q-cn{font-size:44px;font-weight:900;letter-spacing:2px;line-height:1.3}
.q-en{font-size:40px;font-weight:900}
.q-ipa{font-size:17px;color:var(--ink-3);margin-top:6px}
.q-sound{font-size:56px;margin:6px 0;cursor:pointer;display:inline-block;animation:beat 1.6s infinite}
@keyframes beat{0%,100%{transform:scale(1)}50%{transform:scale(1.12)}}
.q-unit{position:absolute;top:12px;left:14px;font-size:11px;color:#fff;background:#c7cbfb;border-radius:8px;padding:2px 8px}
.q-replay{font-size:13px;color:var(--ink-3);margin-top:8px}
#study-a{flex:none;background:#fff;border-radius:24px 24px 0 0;padding:14px 14px calc(16px + env(safe-area-inset-bottom,0px));box-shadow:0 -6px 20px rgba(0,0,0,.06);width:100%;max-width:620px;margin:0 auto}
.a-zone{margin-bottom:10px}
.zh-hint{font-size:12px;color:var(--ink-3);display:flex;align-items:center;gap:6px;margin-bottom:6px}
.zh-hint b{color:var(--primary-deep)}
#a-zh input{width:100%;border:2px solid var(--line);border-radius:14px;padding:12px;font-size:20px;text-align:center;letter-spacing:2px;background:#fafbff}
#a-zh input:focus{border-color:var(--primary);outline:none}
#a-zh input.ok{border-color:var(--ok);background:var(--ok-bg)}
#a-zh input.bad{border-color:var(--bad);background:var(--bad-bg)}
.a-actions{display:flex;gap:8px;justify-content:center}
.a-actions .btn{min-width:110px;flex:1}
#a-actions .btn-ghost{background:#f1f1f8;color:var(--ink-2)}
/* 字母格 + QWERTY 键盘 */
.write-word{display:flex;flex-wrap:wrap;gap:6px;justify-content:center}
.w-cell{width:54px;height:62px;border:2px dashed #c7cbfb;border-radius:12px;background:#fafbff;position:relative;flex:none}
.w-cell.active{border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px rgba(99,102,241,.18)}
.w-cell.done{border-style:solid;border-color:#cdd0fb;background:#f7f8ff}
.w-cell.done::after{content:attr(data-letter);position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:28px;font-weight:900;color:var(--primary-deep);pointer-events:none;text-transform:lowercase}
.w-cell.current::before{content:'';position:absolute;left:12px;right:12px;bottom:7px;height:3px;background:var(--primary);border-radius:2px;opacity:.6;pointer-events:none}
.write-tip{text-align:center;font-size:12px;color:var(--ink-3);margin:2px 0 6px;line-height:1.5}
.write-tip b{color:var(--primary-deep)}
.kbd{display:flex;flex-direction:column;gap:7px;margin-top:2px;user-select:none;-webkit-user-select:none;touch-action:manipulation}
.kbd-row{display:flex;gap:6px}
.kbd-key{
  flex:1;height:50px;border:0;border-radius:12px;background:#eef0fb;
  color:#1e2340;font-size:26px;font-weight:800;font-family:inherit;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  padding:0;line-height:1;text-transform:lowercase;
  box-shadow:0 2px 0 rgba(30,35,64,.08);
}
.kbd-key:active{background:#dde1f6;transform:translateY(1px);box-shadow:none}
.kbd-key.fn{background:#e2e6f8;font-size:21px;font-weight:900}
.kbd-key.wide{flex:1.55;max-width:76px}
/* 反馈 */
#study-fb{position:absolute;inset:0;z-index:5;display:flex;align-items:center;justify-content:center;padding:14px}
.fb-card{background:#fff;border-radius:26px;max-width:480px;width:100%;padding:26px 20px;text-align:center;box-shadow:0 18px 50px rgba(0,0,0,.22);animation:pop .2s ease}
@keyframes pop{from{transform:scale(.85);opacity:0}to{transform:none;opacity:1}}
.fb-face{font-size:56px}
.fb-title{font-size:24px;font-weight:900;margin:6px 0 2px}
.fb-title.good{color:var(--ok)}
.fb-title.wrong{color:var(--bad)}
.fb-answer{margin:12px auto;font-size:22px;font-weight:900}
.fb-sub{color:var(--ink-2);font-size:14px;line-height:1.7}
.fb-actions{display:flex;gap:8px;margin-top:16px;justify-content:center;flex-wrap:wrap}
.fb-actions .btn{min-width:130px}
.copy-zone{margin-top:14px;border-top:2px dashed var(--line);padding-top:12px}
/* 总结 */
#study-summary{position:absolute;inset:0;background:linear-gradient(170deg,#eef0ff,#fdf6ff);z-index:6;overflow-y:auto;-webkit-overflow-scrolling:touch}
.sm-wrap{max-width:560px;margin:0 auto;padding:20px 16px calc(30px + env(safe-area-inset-bottom,0px))}
.sm-hero{background:linear-gradient(150deg,#4f46e5,#7c3aed 60%,#a855f7);border-radius:26px;color:#fff;padding:24px 18px;text-align:center}
.sm-emoji{font-size:52px}
.sm-title{font-size:24px;font-weight:900;margin:6px 0}
.sm-stars{font-size:17px;font-weight:800;margin-top:4px}
.sm-stats{display:flex;gap:8px;margin:14px 0}
.sm-stat{flex:1;background:#fff;border-radius:16px;padding:12px 4px;text-align:center}
.sm-stat .sv{font-size:22px;font-weight:900}
.sm-stat .sl{font-size:11px;color:var(--ink-3);margin-top:3px}
.sm-section{background:#fff;border-radius:18px;padding:14px;margin-top:12px}
.sm-section h4{margin:0 0 8px;font-size:15px}
.sm-wrong-row{display:flex;align-items:center;gap:8px;padding:7px 0;border-bottom:1px dashed var(--line);font-size:15px}
.sm-wrong-row:last-child{border-bottom:0}
.sm-wrong-row .en{font-weight:900}
.sm-wrong-row .zh{color:var(--ink-2)}
.sm-wrong-row .sound{border:0;background:#f0f1ff;border-radius:8px;width:30px;height:30px;cursor:pointer;flex:none}
.sm-btns{display:flex;flex-direction:column;gap:10px;margin-top:16px}
.sm-btns .btn{padding:14px;font-size:17px}
.done-mark{font-size:13px;color:var(--ok);font-weight:800}