/* ===== RAC-Drug 备考训练营 · 样式 ===== */
:root{
  --primary:#185FA5; --primary-dark:#0C447C; --primary-light:#E6F1FB;
  --teal:#0F6E56; --teal-light:#E1F5EE;
  --amber:#854F0B; --amber-light:#FAEEDA;
  --red:#A32D2D; --red-light:#FCEBEB;
  --green:#3B6D11; --green-light:#EAF3DE;
  --bg:#F5F6F8; --card:#FFFFFF; --border:#E4E7EB;
  --text:#24292F; --text2:#5F6B7A; --text3:#98A2B3;
  --shadow:0 1px 3px rgba(16,24,40,.06),0 1px 2px rgba(16,24,40,.04);
  --radius:12px;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);font-size:14px;line-height:1.6}
.hidden{display:none!important}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,select,textarea{font-family:inherit;font-size:14px}

/* ===== 语言切换 ===== */
.lang-switch{display:flex;gap:4px;padding:0 16px 14px}
.lang-btn{flex:1;padding:5px 0;border-radius:8px;border:1px solid var(--border);font-size:12px;color:var(--text2);transition:all .15s}
.lang-btn:hover{border-color:var(--primary)}
.lang-btn.on{background:var(--primary);color:#fff;border-color:var(--primary);font-weight:600}
.q-en{font-size:12.5px;color:#5F6B7A;margin-top:3px;line-height:1.6}
.quiz-stem .q-en{font-size:14px}

/* ===== 视图切换：仅显示当前模块 ===== */
.view{display:none}
.view.active{display:block}

/* ===== 登录页 ===== */
.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#EAF1FB 0%,#F5F6F8 60%,#E1F5EE 100%)}
.auth-card{width:400px;background:var(--card);border-radius:16px;padding:36px 36px 28px;box-shadow:var(--shadow);border:1px solid var(--border)}
.auth-logo{font-size:30px;font-weight:800;color:var(--primary-dark);text-align:center;letter-spacing:1px}
.auth-logo span{color:var(--teal)}
.auth-card h1{font-size:20px;text-align:center;margin-top:6px;font-weight:600}
.auth-sub{text-align:center;color:var(--text2);font-size:12px;margin-top:4px;margin-bottom:22px}
.auth-tabs{display:flex;background:var(--bg);border-radius:10px;padding:4px;margin-bottom:18px}
.auth-tab{flex:1;padding:9px;border-radius:8px;font-size:14px;color:var(--text2)}
.auth-tab.active{background:#fff;color:var(--primary-dark);font-weight:600;box-shadow:var(--shadow)}
.auth-form{display:flex;flex-direction:column;gap:12px}
.auth-form input{padding:11px 14px;border:1px solid var(--border);border-radius:10px;outline:none;transition:border .15s}
.auth-form input:focus{border-color:var(--primary)}
.auth-tip{text-align:center;color:var(--text3);font-size:12px;margin-top:16px}
.auth-msg{text-align:center;color:var(--red);font-size:13px;margin-top:10px;min-height:20px}
.btn-primary{background:var(--primary);color:#fff;padding:11px 22px;border-radius:10px;font-size:14px;font-weight:600;transition:background .15s}
.btn-primary:hover{background:var(--primary-dark)}
.btn-secondary{background:#fff;color:var(--primary-dark);border:1px solid var(--border);padding:9px 18px;border-radius:10px;font-size:13px;transition:background .15s}
.btn-secondary:hover{background:var(--primary-light)}
.btn-danger{background:var(--red);color:#fff;padding:9px 18px;border-radius:10px;font-size:13px;font-weight:600}
.btn-danger:hover{background:#7f1d1d}
.btn-guest{margin-top:12px;background:var(--teal-light);color:var(--teal);border:1px dashed var(--teal);font-size:13px;padding:10px;border-radius:10px;width:100%;transition:background .15s}
.btn-guest:hover{background:#c9ecdd}
.btn-block{width:100%}

/* ===== 应用布局 ===== */
.app{display:flex;min-height:100vh}
.sidebar{width:230px;background:#fff;border-right:1px solid var(--border);display:flex;flex-direction:column;position:fixed;top:0;bottom:0;left:0;z-index:10}
.side-logo{font-size:22px;font-weight:800;color:var(--primary-dark);padding:22px 24px 18px}
.side-logo span{color:var(--teal)}
.side-nav{flex:1;padding:0 12px;display:flex;flex-direction:column;gap:2px}
.nav-item{text-align:left;padding:11px 16px;border-radius:9px;font-size:14px;color:var(--text2);transition:all .15s}
.nav-item:hover{background:var(--bg);color:var(--text)}
.nav-item.active{background:var(--primary-light);color:var(--primary-dark);font-weight:600}
.nav-item.guest-only{background:var(--teal-light);color:var(--teal);font-weight:600;margin-bottom:4px}
.nav-item.guest-only.active{background:var(--teal);color:#fff}

/* ===== 今日任务 ===== */
.today-hero{display:flex;align-items:center;gap:28px;background:linear-gradient(135deg,var(--teal),#0b5c47);color:#fff;border:none;margin-bottom:16px}
.today-hero-left{flex:1}
.today-label{font-size:13px;opacity:.85;margin-bottom:4px}
.today-score{font-size:40px;font-weight:800;line-height:1.1}
.today-tip{font-size:12px;opacity:.8;margin-top:6px}
.today-hero-right{text-align:center}
.today-ring{width:96px;height:96px;border-radius:50%;background:rgba(255,255,255,.15);border:4px solid rgba(255,255,255,.4);display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:700}
.today-ring-label{font-size:12px;opacity:.85;margin-top:8px}
.task-ico{width:38px;height:38px;border-radius:10px;background:var(--primary-light);color:var(--primary-dark);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;flex:none}
.guest-tip{font-size:12px;color:var(--text3);background:var(--amber-light);border-radius:8px;padding:8px 12px;margin-bottom:12px;line-height:1.6}

/* ===== 游客登录区 ===== */
.guest-login{margin-top:14px;padding-top:14px;border-top:1px dashed var(--border)}
.guest-login-title{font-size:13px;font-weight:600;color:var(--teal);margin-bottom:2px}
.guest-login-sub{font-size:12px;color:var(--text3);margin-bottom:8px}
.guest-login input{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:10px;margin-bottom:8px;outline:none;font-size:13px}
.guest-login input:focus{border-color:var(--teal)}
.side-user{border-top:1px solid var(--border);padding:16px 18px;display:flex;align-items:center;gap:10px}
.side-ver{font-size:11px;color:var(--text3);text-align:center;padding:8px 12px 14px;border-top:1px solid var(--border);margin-top:auto}
.user-avatar{width:36px;height:36px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;flex:none}
.user-name{font-size:13px;font-weight:600}
.user-role{font-size:11px;color:var(--text3)}
.logout-btn{margin-left:auto;font-size:12px;color:var(--text3);border:1px solid var(--border);border-radius:8px;padding:5px 10px}
.logout-btn:hover{color:var(--red);border-color:var(--red)}
.main{margin-left:230px;flex:1;padding:28px 32px;max-width:1100px}

/* ===== 通用卡片 ===== */
.page-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.page-head h2{font-size:22px;font-weight:700}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px 22px;margin-bottom:18px;box-shadow:var(--shadow)}
.card h3{font-size:15px;font-weight:600;margin-bottom:14px}
.card h4{font-size:14px;font-weight:600;margin-bottom:10px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.exam-countdown{font-size:13px;color:var(--teal);background:var(--teal-light);padding:7px 14px;border-radius:20px;font-weight:600}

/* ===== 首页诊断 ===== */
.diag-card{display:flex;align-items:center;gap:30px;background:linear-gradient(120deg,#E6F1FB,#fff 70%)}
.diag-left{min-width:200px}
.diag-label{color:var(--text2);font-size:13px}
.diag-score{font-size:52px;font-weight:800;color:var(--primary-dark);line-height:1.1}
.diag-score small{font-size:18px;color:var(--text3)}
.diag-tip{font-size:12px;color:var(--teal);margin-top:6px}
.radar-wrap{flex:1;display:flex;justify-content:center}
.radar-wrap canvas{max-width:220px}
.dom-row{display:flex;align-items:center;gap:12px;margin-bottom:11px}
.dom-name{width:190px;font-size:13px;color:var(--text2);flex:none;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.dom-bar{flex:1;height:10px;border-radius:5px;background:#EEF1F5;overflow:hidden}
.dom-fill{height:100%;border-radius:5px;background:var(--primary);transition:width .6s}
.dom-fill.hot{background:var(--amber)}
.dom-fill.cold{background:var(--teal)}
.dom-w{width:70px;text-align:right;font-size:12px;color:var(--text3);flex:none}
.task-row{display:flex;align-items:center;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--border)}
.task-row:last-child{border-bottom:none}
.task-name{font-size:13px;color:var(--text)}
.task-sub{font-size:12px;color:var(--text3)}
.exam-info{font-size:13px;color:var(--text2);line-height:2}
.exam-info b{color:var(--text)}

/* ===== 筛选 chips ===== */
.filter-row{margin-bottom:16px}
.filter-row label{display:block;font-size:13px;color:var(--text2);margin-bottom:8px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{padding:7px 16px;border-radius:20px;border:1px solid var(--border);font-size:13px;color:var(--text2);transition:all .15s}
.chip:hover{border-color:var(--primary)}
.chip.on{background:var(--primary);color:#fff;border-color:var(--primary);font-weight:600}
.chip.on.hot{background:var(--amber);border-color:var(--amber)}
.btn-row{display:flex;gap:12px;margin-top:16px;flex-wrap:wrap;align-items:center}

/* ===== 答题 ===== */
.quiz-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;color:var(--text2);font-size:13px}
.quiz-tags{display:flex;gap:6px}
.qtag{font-size:11px;padding:2px 8px;border-radius:12px;background:var(--primary-light);color:var(--primary-dark)}
.qtag.eu{background:var(--teal-light);color:var(--teal)}
.qtag.gl{background:var(--amber-light);color:var(--amber)}
.qtag.tp{background:#F1F0FE;color:#534AB7}
.quiz-stem{font-size:16px;line-height:1.8;margin-bottom:18px;font-weight:500}
.quiz-opts{display:flex;flex-direction:column;gap:10px;margin-bottom:18px}
.qopt{display:flex;gap:12px;align-items:flex-start;padding:12px 16px;border:1px solid var(--border);border-radius:10px;cursor:pointer;transition:all .15s;font-size:14px;line-height:1.6}
.qopt:hover{border-color:var(--primary);background:#FAFCFF}
.qopt .ol{width:24px;height:24px;border-radius:50%;border:1.5px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:12px;flex:none;margin-top:1px;color:var(--text2)}
.qopt.sel{border-color:var(--primary);background:var(--primary-light)}
.qopt.sel .ol{border-color:var(--primary);background:var(--primary);color:#fff}
.qopt.correct{border-color:var(--green);background:var(--green-light)}
.qopt.correct .ol{border-color:var(--green);background:var(--green);color:#fff}
.qopt.wrong{border-color:var(--red);background:var(--red-light)}
.qopt.wrong .ol{border-color:var(--red);background:var(--red);color:#fff}
.quiz-expl{margin-top:6px;margin-bottom:16px;padding:14px 16px;border-radius:10px;font-size:13px;line-height:1.8}
.quiz-expl.good{background:var(--green-light);color:var(--green)}
.quiz-expl.bad{background:var(--red-light);color:var(--red)}
.quiz-expl .ref{color:var(--text3);font-size:12px;margin-top:6px}
.quiz-actions{display:flex;gap:12px;justify-content:flex-end}
.timer{font-size:16px;font-weight:700;color:var(--primary-dark);font-variant-numeric:tabular-nums}
.timer.warn{color:var(--red);animation:pulse 1s infinite}
@keyframes pulse{50%{opacity:.4}}
.answer-sheet{margin-top:16px;border-top:1px solid var(--border);padding-top:14px;display:flex;flex-wrap:wrap;gap:8px}
.asheet{width:30px;height:30px;border-radius:8px;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--text2);cursor:pointer}
.asheet.cur{border-color:var(--primary);color:var(--primary-dark);font-weight:700;background:var(--primary-light)}
.asheet.done{background:var(--primary);color:#fff;border-color:var(--primary)}
.asheet.marked{background:var(--amber-light);border-color:var(--amber);color:var(--amber)}

/* ===== 结果 ===== */
.result-score{font-size:44px;font-weight:800;color:var(--primary-dark);text-align:center;padding:18px 0 4px}
.result-score small{font-size:16px;color:var(--text3)}
.result-sub{text-align:center;color:var(--text2);margin-bottom:18px}
.result-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px;margin-bottom:16px}
.rg-item{background:var(--bg);border-radius:10px;padding:14px}
.rg-label{font-size:12px;color:var(--text2)}
.rg-value{font-size:22px;font-weight:700;margin-top:4px}
.rg-bar{height:6px;border-radius:3px;background:#E4E7EB;margin-top:8px;overflow:hidden}
.rg-bar span{display:block;height:100%;border-radius:3px}
.stat-pill{background:var(--primary-light);color:var(--primary-dark);padding:7px 14px;border-radius:20px;font-size:13px;font-weight:600}

/* ===== 统计 ===== */
.stat-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:18px}
.stat-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px}
.stat-card .v{font-size:26px;font-weight:700;color:var(--primary-dark)}
.stat-card .l{font-size:12px;color:var(--text2);margin-top:2px}
.bar-row{display:flex;align-items:center;gap:10px;margin-bottom:9px;font-size:13px}
.bar-row .n{width:160px;color:var(--text2);flex:none}
.bar-row .b{flex:1;height:8px;border-radius:4px;background:#EEF1F5;overflow:hidden}
.bar-row .b span{display:block;height:100%;border-radius:4px;background:var(--primary)}
.bar-row .p{width:46px;text-align:right;color:var(--text3);flex:none}

/* ===== 错题本 ===== */
.wrong-item{border:1px solid var(--border);border-radius:10px;padding:14px 16px;margin-bottom:12px}
.wrong-item .w-q{font-size:14px;margin-bottom:8px;line-height:1.7}
.wrong-item .w-meta{font-size:12px;color:var(--text3);display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.empty-tip{text-align:center;color:var(--text3);padding:40px 0;font-size:14px}

/* ===== 管理端 ===== */
.admin-item{border:1px solid var(--border);border-radius:10px;padding:14px 16px;margin-bottom:12px;background:#fff}
.admin-item .a-q{font-size:14px;font-weight:500;margin-bottom:8px;line-height:1.6}
.admin-item .a-meta{font-size:12px;color:var(--text3);display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.admin-item .a-actions{margin-top:10px;display:flex;gap:8px}
.a-btn{font-size:12px;padding:5px 12px;border-radius:8px;border:1px solid var(--border);color:var(--text2)}
.a-btn:hover{border-color:var(--primary);color:var(--primary-dark)}
.a-btn.del:hover{border-color:var(--red);color:var(--red)}
.user-item{display:flex;align-items:center;justify-content:space-between;padding:13px 6px;border-bottom:1px solid var(--border)}
.user-item:last-child{border-bottom:none}
.user-item .u-role-pill{font-size:11px;padding:2px 10px;border-radius:12px}
.user-item .u-role-pill.admin{background:var(--amber-light);color:var(--amber)}
.user-item .u-role-pill.user{background:var(--primary-light);color:var(--primary-dark)}

/* ===== 新增题目弹窗 ===== */
.modal-mask{position:fixed;inset:0;background:rgba(16,24,40,.45);z-index:100;display:flex;align-items:center;justify-content:center}
.modal{background:#fff;border-radius:16px;width:640px;max-width:92vw;max-height:86vh;overflow:auto;padding:26px 28px}
.modal h3{font-size:17px;margin-bottom:18px}
.modal .f-row{margin-bottom:14px}
.modal .f-row label{display:block;font-size:13px;color:var(--text2);margin-bottom:6px}
.modal input[type=text],.modal select,.modal textarea{width:100%;padding:9px 12px;border:1px solid var(--border);border-radius:9px;outline:none}
.modal textarea{min-height:72px;resize:vertical}
.modal input:focus,.modal select:focus,.modal textarea:focus{border-color:var(--primary)}
.f-inline{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px}
.modal-actions{display:flex;justify-content:flex-end;gap:12px;margin-top:20px}
.form-err{color:var(--red);font-size:12px;margin-top:6px}

/* ===== 复习要点 ===== */
.review-hero{background:linear-gradient(135deg,var(--primary-dark),var(--primary));color:#fff;border:none;margin-bottom:18px}
.review-hero-title{font-size:20px;font-weight:600;margin-bottom:6px}
.review-hero-sub{font-size:13px;opacity:.85}
.rev-card{margin-bottom:12px;overflow:hidden}
.rev-head{display:flex;align-items:center;gap:12px;cursor:pointer;padding:14px 18px;user-select:none}
.rev-badge{min-width:34px;height:34px;border-radius:9px;background:var(--primary-light);color:var(--primary-dark);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px}
.rev-title{flex:1;font-size:15px;font-weight:600;color:var(--text)}
.rev-toggle{font-size:18px;color:var(--text2);width:22px;text-align:center}
.rev-body{padding:4px 18px 18px;border-top:1px solid var(--border)}
.rev-tip{background:var(--amber-light);color:var(--amber);font-size:12px;border-radius:8px;padding:9px 12px;margin:14px 0 6px;line-height:1.6}
.rev-row{padding:11px 2px;border-bottom:1px solid var(--border);display:flex;gap:14px;align-items:flex-start}
.rev-row:last-child{border-bottom:none}
.rev-k{min-width:150px;max-width:190px;font-weight:600;font-size:13px;color:var(--text);flex-shrink:0;padding-top:2px}
.rev-v{flex:1;font-size:13px;color:var(--text2);line-height:1.65}
.rev-sub{color:var(--text3);font-size:12px;margin-top:3px;font-style:italic}
.rev-m{margin-top:6px;background:var(--teal-light);border-left:3px solid var(--teal);border-radius:6px;padding:6px 10px;font-size:12px;color:var(--teal);line-height:1.6}
.rev-m2{display:block;color:var(--text3);font-size:11px;margin-top:2px}
@media (max-width:700px){
  .rev-row{flex-direction:column;gap:4px}
  .rev-k{min-width:0;max-width:none}
}

@media (max-width:900px){
  .sidebar{width:72px}
  .side-logo{font-size:15px;padding:18px 10px;text-align:center}
  .side-logo span,.nav-item{font-size:0}
  .nav-item:before{font-size:20px}
  .main{margin-left:72px;padding:20px 16px}
  .grid-2{grid-template-columns:1fr}
  .side-user{justify-content:center;padding:12px 4px;flex-direction:column}
  .user-name,.user-role,.logout-btn{display:none}
  .stat-cards{grid-template-columns:repeat(2,1fr)}
  .diag-card{flex-direction:column;gap:16px}
}