/* ============ 日语学习工作台 ============ */
:root{
  --bg:#0f1117; --bg2:#151824; --card:#1b1f2e; --card2:#222739;
  --line:#2b3145; --tx:#e8eaf2; --tx2:#a4abc4; --tx3:#6f7793;
  --pink:#ff8fab; --blue:#8ecae6; --green:#8ce0a8; --gold:#ffd166; --purple:#c8b6ff; --red:#f4978e;
  --r:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  background:radial-gradient(1200px 700px at 85% -10%, #23283c 0%, transparent 60%),
             radial-gradient(900px 600px at -10% 100%, #1e2033 0%, transparent 55%), var(--bg);
  color:var(--tx);
  font:15px/1.6 "Hiragino Sans","Yu Gothic UI","Microsoft YaHei","Segoe UI",system-ui,sans-serif;
}
#app{display:flex;min-height:100vh}

/* ---------- 侧栏 ---------- */
.side{width:236px;flex:0 0 236px;background:linear-gradient(180deg,#151827,#12141f);
  border-right:1px solid var(--line);padding:18px 14px;display:flex;flex-direction:column;gap:16px;
  position:sticky;top:0;height:100vh}
.brand{display:flex;align-items:center;gap:10px}
.logo{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;font-size:20px;font-weight:700;
  background:linear-gradient(135deg,var(--pink),#ff5c8a);color:#2a0f18;box-shadow:0 4px 14px rgba(255,143,171,.3)}
.brand-t{font-weight:700;font-size:15px}
.brand-s{font-size:11px;color:var(--tx3)}

.me{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:12px}
.me-row{display:flex;align-items:center;gap:8px;margin-bottom:8px}
.rank-badge{background:var(--gold);color:#3a2c00;font-weight:700;font-size:11px;padding:2px 7px;border-radius:999px}
.rank-name{font-size:13px;color:var(--tx2)}
.xpbar{height:6px;background:#0e1119;border-radius:99px;overflow:hidden}
.xpbar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--pink),var(--gold));transition:width .4s}
.me-sub{display:flex;justify-content:space-between;font-size:10.5px;color:var(--tx3);margin-top:5px}
.me-chips{display:flex;gap:6px;margin-top:9px}
.chip{flex:1;background:var(--card2);border-radius:8px;font-size:11px;padding:4px 6px;text-align:center;color:var(--tx2)}
.chip b{color:var(--tx)}

#nav{display:flex;flex-direction:column;gap:2px;flex:1;overflow:auto}
#nav button{display:flex;align-items:center;gap:9px;background:none;border:0;color:var(--tx2);
  padding:9px 11px;border-radius:10px;font:inherit;font-size:13.5px;cursor:pointer;text-align:left;transition:.15s}
#nav button span{width:20px;text-align:center;font-size:14px}
#nav button:hover{background:var(--card);color:var(--tx)}
#nav button.on{background:linear-gradient(90deg,rgba(255,143,171,.18),rgba(255,143,171,.04));
  color:#fff;box-shadow:inset 2px 0 0 var(--pink)}
.side-foot{border-top:1px solid var(--line);padding-top:12px}
.stage-tag{font-size:11.5px;color:var(--pink);background:rgba(255,143,171,.12);
  padding:4px 8px;border-radius:8px;display:inline-block;margin-bottom:6px}
.side-note{font-size:11px;color:var(--tx3)}

/* ---------- 主区 ---------- */
.main{flex:1;min-width:0;padding:22px 26px 60px}
.top{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:20px;gap:12px;flex-wrap:wrap}
h1{font-size:23px;font-weight:700;letter-spacing:.3px}
.sub{color:var(--tx3);font-size:13px;margin-top:3px}
.today{font-size:12px;color:var(--tx3);background:var(--card);border:1px solid var(--line);padding:6px 11px;border-radius:99px}

/* ---------- 通用组件 ---------- */
.grid{display:grid;gap:14px}
.g2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(215px,1fr))}
.g4{grid-template-columns:repeat(auto-fit,minmax(160px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px}
.card h3{font-size:14px;margin-bottom:12px;display:flex;align-items:center;gap:7px;color:var(--tx)}
.card h3 em{font-style:normal;font-size:11px;color:var(--tx3);font-weight:400;margin-left:auto}
.hint{font-size:12px;color:var(--tx3);line-height:1.7}
.kpi{font-size:27px;font-weight:700;line-height:1.2}
.kpi-l{font-size:11.5px;color:var(--tx3);margin-top:2px}
.pill{display:inline-block;font-size:11px;padding:2px 8px;border-radius:99px;background:var(--card2);color:var(--tx2)}
.pill.n5{background:rgba(142,202,230,.18);color:var(--blue)}
.pill.n4{background:rgba(140,224,168,.18);color:var(--green)}
.pill.n3{background:rgba(255,209,102,.18);color:var(--gold)}
.pill.n2{background:rgba(200,182,255,.18);color:var(--purple)}
.pill.n1{background:rgba(244,151,142,.2);color:var(--red)}
.pill.custom{background:rgba(255,143,171,.18);color:var(--pink)}

.btn{background:var(--card2);border:1px solid var(--line);color:var(--tx);padding:8px 15px;
  border-radius:10px;font:inherit;font-size:13px;cursor:pointer;transition:.15s}
.btn:hover{border-color:#3d4664;transform:translateY(-1px)}
.btn.pri{background:linear-gradient(135deg,var(--pink),#ff6b93);border:0;color:#2a0f18;font-weight:600}
.btn.gd{background:linear-gradient(135deg,var(--gold),#f2a71b);border:0;color:#3a2c00;font-weight:600}
.btn.gr{background:rgba(140,224,168,.16);border-color:rgba(140,224,168,.35);color:var(--green)}
.btn.rd{background:rgba(244,151,142,.14);border-color:rgba(244,151,142,.3);color:var(--red)}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none}
.btn.sm{padding:5px 10px;font-size:12px}
.row{display:flex;gap:9px;flex-wrap:wrap;align-items:center}
.spacer{flex:1}

/* 任务清单 */
.tasks{display:flex;flex-direction:column;gap:9px}
.task{display:flex;align-items:center;gap:11px;background:var(--card2);border-radius:11px;padding:10px 13px}
.task.ok{background:rgba(140,224,168,.11)}
.tk-box{width:19px;height:19px;border-radius:6px;border:1.5px solid var(--tx3);display:grid;place-items:center;
  font-size:11px;flex:0 0 auto}
.task.ok .tk-box{background:var(--green);border-color:var(--green);color:#0c2415}
.tk-name{font-size:13.5px}
.tk-bar{flex:1;height:5px;background:#0e1119;border-radius:99px;overflow:hidden;min-width:60px}
.tk-bar i{display:block;height:100%;background:var(--pink)}
.task.ok .tk-bar i{background:var(--green)}
.tk-num{font-size:11.5px;color:var(--tx3);min-width:52px;text-align:right}

/* ---------- 单词卡片 ---------- */
.flash{perspective:1200px;margin:0 auto;max-width:520px}
.flash-in{position:relative;height:290px;transition:transform .5s;transform-style:preserve-3d;cursor:pointer}
.flash.flip .flash-in{transform:rotateY(180deg)}
.face{position:absolute;inset:0;backface-visibility:hidden;border-radius:20px;border:1px solid var(--line);
  background:linear-gradient(160deg,var(--card2),var(--card));display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:11px;padding:22px;text-align:center}
.face.back{transform:rotateY(180deg);background:linear-gradient(160deg,#2a2340,#1d1a2c)}
.f-kana{font-size:44px;font-weight:600;letter-spacing:3px;color:var(--pink)}
.f-jp{font-size:52px;font-weight:700;letter-spacing:2px}
.f-ro{font-size:14px;color:var(--tx3);letter-spacing:1.5px}
.f-cn{font-size:22px;color:var(--gold);font-weight:600}
.f-pos{font-size:11.5px;color:var(--tx3)}
.f-tip{position:absolute;bottom:12px;font-size:11px;color:var(--tx3)}
.f-ex{font-size:13px;color:var(--tx2);border-top:1px dashed var(--line);padding-top:10px;margin-top:4px;max-width:90%}

.prog-line{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--tx3);margin-bottom:14px}
.prog-line .bar{flex:1;height:5px;background:#0e1119;border-radius:99px;overflow:hidden}
.prog-line .bar i{display:block;height:100%;background:linear-gradient(90deg,var(--blue),var(--pink))}

/* ---------- 五十音 ---------- */
.kana-tbl{width:100%;border-collapse:separate;border-spacing:5px}
.kana-tbl th{font-size:11px;color:var(--tx3);font-weight:500;padding:2px}
.kcell{background:var(--card2);border:1px solid var(--line);border-radius:10px;padding:7px 3px;text-align:center;
  cursor:pointer;transition:.15s}
.kcell:hover{border-color:var(--pink);transform:translateY(-2px)}
.kcell.done{background:rgba(140,224,168,.13);border-color:rgba(140,224,168,.3)}
.kcell b{display:block;font-size:20px;font-weight:600}
.kcell s{display:block;font-size:13px;color:var(--tx2);text-decoration:none}
.kcell u{display:block;font-size:10px;color:var(--tx3);text-decoration:none;letter-spacing:.5px}
.kcell.empty{background:transparent;border:1px dashed #232838;cursor:default}
.kcell.empty:hover{transform:none;border-color:#232838}

/* ---------- 练习通用 ---------- */
.qbox{max-width:660px;margin:0 auto}
.q-head{display:flex;justify-content:space-between;font-size:12px;color:var(--tx3);margin-bottom:12px}
.q-stem{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px;text-align:center;margin-bottom:14px}
.q-jp{font-size:26px;font-weight:600;letter-spacing:1.5px;line-height:1.5}
.q-cn{font-size:15px;color:var(--gold);margin-top:8px}
.q-kana{font-size:13px;color:var(--tx3);margin-top:6px;letter-spacing:1px}
.opts{display:grid;gap:9px}
.opt{background:var(--card2);border:1px solid var(--line);border-radius:11px;padding:12px 15px;cursor:pointer;
  font-size:15px;transition:.15s;display:flex;align-items:center;gap:10px}
.opt:hover{border-color:var(--pink)}
.opt i{width:20px;height:20px;border-radius:6px;background:#0e1119;font-size:11px;display:grid;place-items:center;
  color:var(--tx3);font-style:normal;flex:0 0 auto}
.opt.right{background:rgba(140,224,168,.16);border-color:var(--green)}
.opt.wrong{background:rgba(244,151,142,.14);border-color:var(--red)}
.opt.dim{opacity:.45}
.fb{margin-top:13px;padding:12px 15px;border-radius:11px;font-size:13px;line-height:1.7}
.fb.ok{background:rgba(140,224,168,.12);border:1px solid rgba(140,224,168,.3)}
.fb.no{background:rgba(244,151,142,.1);border:1px solid rgba(244,151,142,.28)}
.fb b{color:var(--gold)}

/* 拼字 / 语序 */
.tiles{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;min-height:52px;
  background:var(--card2);border:1px dashed var(--line);border-radius:12px;padding:11px}
.tile{background:var(--card);border:1px solid var(--line);border-radius:9px;padding:8px 13px;font-size:19px;
  cursor:pointer;transition:.12s;user-select:none}
.tile:hover{border-color:var(--pink);transform:translateY(-2px)}
.tile.used{opacity:.25;pointer-events:none}
.slot{min-height:56px;background:rgba(255,143,171,.07);border:1px solid rgba(255,143,171,.28)}
.slot .tile{background:linear-gradient(135deg,#33283a,#262033)}
.answer-line{text-align:center;font-size:24px;letter-spacing:2px;margin:10px 0;min-height:34px}

/* 语法卡 */
.g-pat{background:#0e1119;border-radius:10px;padding:11px 14px;font-size:14.5px;color:var(--blue);
  letter-spacing:.5px;margin-bottom:11px}
.g-ex{background:var(--card2);border-radius:10px;padding:10px 13px;margin-bottom:7px}
.g-ex .jp{font-size:15px}
.g-ex .cn{font-size:12.5px;color:var(--tx3);margin-top:3px}

/* ---------- 计划 ---------- */
.timeline{position:relative;padding-left:26px}
.timeline:before{content:'';position:absolute;left:8px;top:6px;bottom:6px;width:2px;background:var(--line)}
.tl-item{position:relative;margin-bottom:14px}
.tl-item:before{content:'';position:absolute;left:-22px;top:20px;width:11px;height:11px;border-radius:50%;
  background:var(--bg);border:2.5px solid var(--tx3)}
.tl-item.cur:before{border-color:var(--pink);box-shadow:0 0 0 4px rgba(255,143,171,.18)}
.tl-item.done:before{background:var(--green);border-color:var(--green)}
.st-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:8px}
.st-name{font-size:15.5px;font-weight:700}
.st-span{font-size:11.5px;color:var(--tx3)}
.st-goal{font-size:13px;color:var(--tx2);background:#0e1119;border-radius:10px;padding:10px 13px;margin-bottom:11px;line-height:1.75}
.lists{display:grid;gap:11px;grid-template-columns:repeat(auto-fit,minmax(210px,1fr))}
.lbox h4{font-size:12px;color:var(--pink);margin-bottom:6px}
.lbox ul{list-style:none;display:flex;flex-direction:column;gap:5px}
.lbox li{font-size:12.5px;color:var(--tx2);padding-left:13px;position:relative;line-height:1.65}
.lbox li:before{content:'▪';position:absolute;left:0;color:var(--tx3)}

table.plain{width:100%;border-collapse:collapse;font-size:12.5px}
table.plain th{text-align:left;color:var(--tx3);font-weight:500;padding:8px 9px;border-bottom:1px solid var(--line);font-size:11.5px}
table.plain td{padding:9px;border-bottom:1px solid #232838;color:var(--tx2);vertical-align:top}
table.plain tr.cur td{background:rgba(255,143,171,.07);color:var(--tx)}
table.plain td b{color:var(--tx)}

/* ---------- 闯关 ---------- */
.qmap{display:grid;gap:12px}
.qstage{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:15px}
.qstage.locked{opacity:.55}
.qnodes{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
.qnode{flex:1;min-width:120px;background:var(--card2);border:1px solid var(--line);border-radius:12px;
  padding:12px;text-align:center;cursor:pointer;transition:.15s;position:relative}
.qnode:hover{transform:translateY(-2px);border-color:var(--pink)}
.qnode.lock{opacity:.4;cursor:not-allowed}
.qnode.lock:hover{transform:none;border-color:var(--line)}
.qnode.pass{border-color:rgba(140,224,168,.4);background:rgba(140,224,168,.1)}
.qnode.boss{background:linear-gradient(150deg,rgba(255,209,102,.15),var(--card2));border-color:rgba(255,209,102,.4)}
.qn-ico{font-size:20px}
.qn-name{font-size:12px;margin-top:5px}
.qn-req{font-size:10.5px;color:var(--tx3);margin-top:3px}
.badges{display:flex;gap:7px;flex-wrap:wrap}
.badge{background:linear-gradient(135deg,rgba(255,209,102,.2),rgba(255,143,171,.14));border:1px solid rgba(255,209,102,.3);
  border-radius:99px;padding:4px 11px;font-size:11.5px;color:var(--gold)}

/* ---------- 统计 ---------- */
.bars{display:flex;align-items:flex-end;gap:5px;height:120px;padding-top:8px}
.bars div{flex:1;background:linear-gradient(180deg,var(--pink),rgba(255,143,171,.25));border-radius:5px 5px 0 0;
  min-height:3px;position:relative}
.bars div span{position:absolute;bottom:-17px;left:0;right:0;text-align:center;font-size:9px;color:var(--tx3)}
.boxrow{display:flex;gap:6px;margin-top:6px}
.boxrow div{flex:1;background:var(--card2);border-radius:9px;padding:9px 4px;text-align:center}
.boxrow b{display:block;font-size:17px}
.boxrow s{display:block;font-size:10px;color:var(--tx3);text-decoration:none}

.wlist{display:flex;flex-direction:column;gap:6px;max-height:330px;overflow:auto}
.wrow{display:flex;align-items:center;gap:10px;background:var(--card2);border-radius:9px;padding:8px 11px;font-size:13px}
.wrow .jp{font-weight:600;min-width:80px}
.wrow .kn{color:var(--tx3);font-size:11.5px;min-width:90px}
.wrow .cn{color:var(--tx2);flex:1}
.wrow .bd{font-size:11px;color:var(--red)}

textarea,input[type=text],input[type=number],select{
  width:100%;background:#0e1119;border:1px solid var(--line);border-radius:10px;color:var(--tx);
  padding:10px 12px;font:inherit;font-size:13px;resize:vertical}
textarea:focus,input:focus,select:focus{outline:0;border-color:var(--pink)}
label.fl{display:block;font-size:12px;color:var(--tx3);margin:11px 0 5px}
.sw{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--tx2);cursor:pointer;padding:6px 0}
.sw input{width:auto}

.toast{position:fixed;left:50%;bottom:34px;transform:translate(-50%,26px);background:#2a3048;
  border:1px solid var(--line);color:#fff;padding:11px 20px;border-radius:12px;font-size:13.5px;
  opacity:0;pointer-events:none;transition:.28s;z-index:99;box-shadow:0 10px 30px rgba(0,0,0,.4)}
.toast.on{opacity:1;transform:translate(-50%,0)}

.empty{text-align:center;padding:44px 20px;color:var(--tx3);font-size:13.5px}
.speak{background:none;border:0;color:var(--tx3);cursor:pointer;font-size:16px;padding:2px 6px}
.speak:hover{color:var(--pink)}

/* 笔记列表 / 目录结构代码块 */
.nlist{display:flex;flex-direction:column;gap:6px}
.nrow{display:flex;align-items:center;gap:8px;background:var(--card2);border-radius:8px;padding:8px 11px}
.nrow b{min-width:84px;color:var(--pink);font-size:13px}
.nrow span{flex:1;color:var(--tx3);font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.nrow .speak{margin-left:auto}
.code{background:var(--card2);border:1px solid var(--line);border-radius:8px;padding:12px;
  font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12px;color:#cfd6e6;
  white-space:pre;overflow:auto;margin:8px 0;line-height:1.5}
code{background:var(--card2);border:1px solid var(--line);border-radius:5px;padding:1px 6px;font-size:12px;color:var(--tx2)}

@media (max-width:900px){
  #app{flex-direction:column}
  .side{width:100%;flex:none;height:auto;position:static;flex-direction:column}
  #nav{flex-direction:row;flex-wrap:wrap}
  #nav button{flex:1 1 auto}
  .main{padding:16px}
}