:root{--bg:#f5f5f7;--card:#fff;--primary:#0071e3;--primary-light:#e8f0fe;--text:#1d1d1f;--text2:#86868b;--text3:#aeaeb2;--border:#e5e5ea;--success:#34c759;--success-bg:#e8f8ee;--danger:#ff3b30;--danger-bg:#fff0ef;--warning:#ff9500;--warning-bg:#fff8ed;--radius:16px;--radius-sm:12px;--shadow:0 1px 3px rgba(0,0,0,0.06);--shadow-lg:0 8px 30px rgba(0,0,0,0.08)}
*{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%;font-family:"黑体","Microsoft YaHei",sans-serif}
body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}
.page{display:none;min-height:100vh;padding:0 16px 80px;animation:fadeUp .3s ease}
.page.active{display:block}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.topbar{position:sticky;top:0;z-index:50;background:rgba(245,245,247,.92);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);padding:12px 16px;display:flex;align-items:center;gap:10px}
.topbar h1{font-size:18px;font-weight:600;flex:1}
.topbar .back-btn{background:none;border:none;font-size:20px;color:var(--primary);cursor:pointer;padding:4px 8px;border-radius:8px}
.topbar .back-btn:active{background:var(--primary-light)}
.auth-bar{display:flex;align-items:center;justify-content:flex-end;gap:8px;padding:8px 16px;font-size:12px;color:var(--text2);background:var(--card);border-bottom:1px solid var(--border)}
.auth-bar .uname{color:var(--primary);font-weight:500}
.auth-bar .abtn{background:none;border:1px solid var(--border);padding:4px 12px;border-radius:8px;font-size:11px;cursor:pointer;color:var(--primary);transition:.2s}
.auth-bar .abtn:active{background:var(--primary-light)}
.auth-bar .abtn.logout{color:var(--danger);border-color:var(--danger)}
.bottom-nav{position:fixed;bottom:0;left:0;right:0;z-index:100;background:rgba(255,255,255,.88);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border-top:1px solid var(--border);display:flex;padding:6px 0 env(safe-area-inset-bottom,8px)}
.bottom-nav button{flex:1;border:none;background:none;display:flex;flex-direction:column;align-items:center;gap:2px;font-size:10px;color:var(--text3);cursor:pointer;padding:4px 0;transition:.2s}
.bottom-nav button.active{color:var(--primary)}
.bottom-nav button svg{width:22px;height:22px}
.hero{background:linear-gradient(135deg,#e8f0fe,#f0e6ff);border-radius:var(--radius);padding:20px;margin:12px 0}
.hero h2{font-size:20px;font-weight:700;margin-bottom:4px}
.hero p{font-size:13px;color:var(--text2)}
.search-box{position:relative;margin:0 0 12px}
.search-box input{width:100%;padding:12px 16px 12px 40px;border:1.5px solid var(--border);border-radius:var(--radius-sm);font-size:15px;background:var(--card);outline:none;transition:.2s}
.search-box input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,113,227,.1)}
.search-box svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:18px;height:18px;color:var(--text3)}
.acc-group{margin-bottom:12px}
.acc-header{background:var(--card);border-radius:var(--radius-sm);padding:14px 16px;display:flex;align-items:center;gap:10px;cursor:pointer;box-shadow:var(--shadow);transition:.2s;-webkit-tap-highlight-color:transparent}
.acc-header:active{transform:scale(.98)}
.acc-header .ah-name{flex:1;font-size:15px;font-weight:600}
.acc-header .ah-count{font-size:12px;color:var(--text2);background:var(--bg);padding:2px 10px;border-radius:10px}
.acc-header .ah-arrow{font-size:12px;color:var(--text3);transition:transform .25s}
.acc-group.open .ah-arrow{transform:rotate(90deg)}
.acc-body{overflow:hidden;max-height:0;transition:max-height .3s ease;padding:0 4px}
.acc-group.open .acc-body{max-height:2000px;padding:6px 4px 0}
.acc-item{background:var(--card);border-radius:var(--radius-sm);padding:14px 16px;margin-bottom:6px;box-shadow:var(--shadow);cursor:pointer;display:flex;align-items:center;justify-content:space-between;transition:.2s}
.acc-item:active{transform:scale(.98);background:var(--primary-light)}
.acc-item .ai-id{font-size:11px;color:var(--primary);background:var(--primary-light);padding:2px 8px;border-radius:8px;font-weight:600;margin-right:10px}
.acc-item .ai-name{flex:1;font-size:14px;font-weight:500}
.acc-item .ai-arrow{color:var(--text3)}
.modal-mask{position:fixed;inset:0;z-index:200;background:rgba(0,0,0,.35);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);display:none;align-items:flex-end;justify-content:center}
.modal-mask.show{display:flex}
.modal-sheet{background:var(--card);border-radius:var(--radius) var(--radius) 0 0;width:100%;max-width:500px;padding:20px 20px calc(env(safe-area-inset-bottom,16px) + 20px);animation:slideUp .3s ease;max-height:85vh;overflow-y:auto}
@keyframes slideUp{from{transform:translateY(100%)}to{transform:none}}
.modal-handle{width:36px;height:4px;background:var(--border);border-radius:2px;margin:0 auto 16px}
.modal-sheet h3{font-size:17px;font-weight:600;margin-bottom:16px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;font-weight:500;color:var(--text2);margin-bottom:6px}
.field input,.field select{width:100%;padding:12px 14px;border:1.5px solid var(--border);border-radius:var(--radius-sm);font-size:15px;outline:none;transition:.2s;background:var(--card);font-family:inherit}
.field input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,113,227,.1)}
.ac-wrap{position:relative}
.ac-list{position:absolute;top:100%;left:0;right:0;max-height:200px;overflow-y:auto;background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm);box-shadow:var(--shadow-lg);z-index:10;display:none}
.ac-list.show{display:block}
.ac-item{padding:10px 14px;font-size:14px;cursor:pointer;transition:.15s;border-bottom:1px solid #f5f5f5}
.ac-item:last-child{border-bottom:none}
.ac-item:hover,.ac-item.active{background:var(--primary-light);color:var(--primary)}
.ac-item .ac-sub{font-size:11px;color:var(--text2);margin-top:2px}
.ac-empty{padding:12px;text-align:center;color:var(--text2);font-size:13px}
.modal-actions{display:flex;gap:10px;margin-top:20px}
.modal-actions button{flex:1;padding:14px;border:none;border-radius:var(--radius-sm);font-size:15px;font-weight:600;cursor:pointer;transition:.2s}
.modal-actions .m-cancel{background:var(--bg);color:var(--text2)}
.modal-actions .m-confirm{background:var(--primary);color:#fff}
.modal-actions button:active{transform:scale(.98)}
.score-bar{background:var(--card);border-radius:var(--radius-sm);padding:12px 16px;margin-bottom:12px;box-shadow:var(--shadow);display:flex;align-items:center;gap:8px}
.score-bar .sb-name{font-size:15px;font-weight:600;flex:1}
.score-bar .sb-meta{font-size:12px;color:var(--text2)}
.cat-card{background:var(--card);border-radius:var(--radius);padding:14px;margin-bottom:10px;box-shadow:var(--shadow)}
.cat-head{display:flex;justify-content:space-between;align-items:center;padding-bottom:10px;border-bottom:1px solid var(--border);margin-bottom:10px}
.cat-head .ch-name{font-size:15px;font-weight:600}
.cat-head .ch-score{font-size:12px;color:var(--text2);background:var(--bg);padding:3px 10px;border-radius:8px}
.s-row{padding:10px 0;border-bottom:1px solid #f5f5f5}
.s-row:last-child{border-bottom:none}
.s-desc{font-size:13px;line-height:1.5;margin-bottom:6px}
.s-meta{font-size:11px;color:var(--text2);margin-bottom:8px;display:flex;gap:8px}
.s-meta .ded{color:var(--danger)}
.s-toggle{display:inline-flex;border-radius:10px;overflow:hidden;border:1.5px solid var(--border)}
.s-toggle button{padding:6px 18px;border:none;font-size:12px;font-weight:500;cursor:pointer;background:var(--card);color:var(--text2);transition:.2s}
.s-toggle button.on-pass{background:var(--success);color:#fff}
.s-toggle button.on-fail{background:var(--danger);color:#fff}
.s-reason{display:none;margin-top:8px}
.s-reason textarea{width:100%;padding:8px 12px;border:1.5px solid var(--border);border-radius:10px;font-size:13px;outline:none;resize:none;min-height:32px;font-family:inherit;transition:.2s;background:var(--bg)}
.s-reason textarea:focus{border-color:var(--danger);box-shadow:0 0 0 3px rgba(255,59,48,.08)}
.dq-box{background:var(--warning-bg);border-radius:var(--radius-sm);padding:14px 16px;margin-bottom:12px}
.dq-box h4{font-size:14px;font-weight:600;color:var(--warning);margin-bottom:8px}
.dq-item{display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:13px;cursor:pointer}
.dq-item input{margin-top:2px;width:18px;height:18px;accent-color:var(--danger)}
.dq-reason{display:none;margin:4px 0 4px 26px}
.dq-reason textarea{width:100%;padding:8px 12px;border:1.5px solid var(--border);border-radius:10px;font-size:13px;outline:none;resize:none;min-height:32px;font-family:inherit;background:var(--bg)}
.timer-box{background:var(--card);border-radius:var(--radius) var(--radius) 0 0;padding:10px 12px;box-shadow:0 -4px 20px rgba(0,0,0,.12);position:fixed;bottom:52px;left:0;right:0;z-index:99;border-top:1px solid var(--border)}
.timer-display{text-align:center;font-size:26px;font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:2px;margin-bottom:6px}
.timer-phases{display:flex;gap:6px;margin-bottom:6px}
.timer-phases button{flex:1;padding:6px 0;border:1.5px solid var(--border);border-radius:var(--radius-sm);background:var(--card);font-size:11px;font-weight:500;cursor:pointer;transition:.2s;color:var(--text2)}
.timer-phases button.active{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}
.timer-phases button .tp-time{display:block;font-size:13px;font-weight:600;margin-top:1px}
.timer-ctrls{display:flex;gap:8px;justify-content:center}
.timer-ctrls button{padding:6px 18px;border:none;border-radius:10px;font-size:12px;font-weight:600;cursor:pointer;transition:.2s}
.t-start{background:var(--success);color:#fff}
.t-stop{background:var(--danger);color:#fff}
.t-reset{background:var(--bg);color:var(--text2)}
.btn-submit{width:100%;padding:10px;border:none;border-radius:var(--radius);font-size:14px;font-weight:600;cursor:pointer;background:var(--primary);color:#fff;box-shadow:0 4px 15px rgba(0,113,227,.25);transition:.2s;margin-top:4px}
.btn-submit:active{transform:scale(.98)}
.btn-submit:disabled{opacity:.4;cursor:not-allowed;transform:none}

.score-float-bar{position:fixed;bottom:0;left:0;right:0;z-index:200;background:var(--card);border-top:1px solid var(--border);box-shadow:0 -2px 12px rgba(0,0,0,.04);padding:10px 14px env(safe-area-inset-bottom,10px)}
.sfb-timer{display:flex;align-items:center;gap:8px;margin-bottom:8px}
.sfb-timer-main{font-size:20px;font-weight:600;font-variant-numeric:tabular-nums;letter-spacing:1px;color:var(--text);min-width:58px}
.sfb-phases{display:flex;gap:4px;flex:1}
.sfb-phases button{flex:1;padding:4px 4px;border:1px solid var(--border);border-radius:6px;background:var(--card);font-size:10px;font-weight:500;cursor:pointer;color:var(--text2);text-align:center}
.sfb-phases button.active{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}
.sfb-phases button .tp-time{display:block;font-size:11px;font-weight:600;margin-top:1px}
.sfb-btns{display:flex;gap:4px}
.sfb-btns button{padding:5px 12px;border:none;border-radius:6px;font-size:11px;font-weight:500;cursor:pointer;transition:all .15s;height:28px;display:inline-flex;align-items:center;justify-content:center}
.sfb-btns button:active{transform:scale(.95)}
.sfb-submit{width:100%;padding:12px;border:none;border-radius:var(--radius-sm);font-size:14px;font-weight:600;cursor:pointer;background:var(--primary);color:#fff}
.sfb-submit:active{transform:scale(.98)}
.result-hd{text-align:center;padding:24px 0 16px}
.result-hd h2{font-size:17px;font-weight:600;margin-bottom:8px}
.result-num{font-size:64px;font-weight:700;letter-spacing:-2px}
.result-num.pass{color:var(--success)}
.result-num.fail{color:var(--danger)}
.result-badge{display:inline-block;padding:4px 16px;border-radius:20px;font-size:13px;font-weight:600;margin-top:4px}
.result-badge.pass{background:var(--success-bg);color:var(--success)}
.result-badge.fail{background:var(--danger-bg);color:var(--danger)}
.info-tbl{width:100%;border-collapse:collapse;margin-bottom:12px}
.info-tbl td{padding:8px 12px;font-size:13px;border-bottom:1px solid var(--border)}
.info-tbl td.lbl{color:var(--text2);width:80px}
.r-tbl{width:100%;border-collapse:collapse;margin-bottom:12px;font-size:13px}
.r-tbl th{padding:10px 12px;background:var(--bg);font-weight:600;text-align:left;color:var(--text2);font-size:12px}
.r-tbl td{padding:8px 12px;border-bottom:1px solid var(--border)}
.r-tbl .total td{font-weight:700;border-top:2px solid var(--border)}
.sig-area{margin:16px 0}
.sig-area h4{font-size:14px;font-weight:600;margin-bottom:10px}
.sig-card{background:var(--card);border-radius:var(--radius-sm);padding:12px;margin-bottom:10px;box-shadow:var(--shadow)}
.sig-card label{display:block;font-size:12px;color:var(--text2);margin-bottom:6px}
.sig-card canvas{width:100%;height:150px;border:1.5px solid var(--border);border-radius:10px;background:#fff;touch-action:none}
.sig-card canvas.done{border-color:var(--success);background:var(--success-bg);cursor:not-allowed;opacity:.85}
.sig-btns{display:flex;gap:6px;margin-top:6px}
.sig-btns button{flex:1;padding:6px;border:1px solid var(--border);border-radius:8px;font-size:11px;background:var(--card);cursor:pointer;color:var(--text2)}
.result-acts{display:flex;gap:8px;padding:16px 0 24px}
.result-acts button{flex:1;padding:12px;border:none;border-radius:var(--radius-sm);font-size:13px;font-weight:500;cursor:pointer}
.act-save{background:var(--primary);color:#fff}
.act-export{background:var(--bg);color:var(--text);border:1px solid var(--border)}
.act-home{background:var(--bg);color:var(--text2)}
.admin-tabs{display:flex;background:var(--card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);margin-bottom:14px;border:1px solid var(--border)}
.admin-tabs button{flex:1;padding:10px 0;text-align:center;font-size:13px;font-weight:500;cursor:pointer;background:var(--card);color:var(--text2);border:none;transition:.2s}
.admin-tabs button.active{background:var(--primary);color:#fff}
.rec-card{background:var(--card);border-radius:var(--radius-sm);padding:14px 16px;margin-bottom:8px;box-shadow:var(--shadow)}
.rec-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:4px}
.rec-name{font-size:14px;font-weight:500}
.rec-score{font-size:16px;font-weight:700}
.rec-score.pass{color:var(--success)}
.rec-score.fail{color:var(--danger)}
.rec-meta{display:flex;gap:12px;font-size:11px;color:var(--text2);flex-wrap:wrap}
.rec-acts{display:flex;gap:6px;margin-top:8px}
.rec-acts button{flex:1;padding:6px 0;font-size:11px;border:1px solid var(--border);border-radius:8px;background:var(--card);cursor:pointer;transition:.2s}
.rec-acts .ra-del{color:var(--danger);border-color:var(--danger)}
.rec-acts .ra-view{color:var(--primary);border-color:var(--primary)}
.rec-acts .ra-export{color:var(--success);border-color:var(--success)}
.user-card{background:var(--card);border-radius:var(--radius-sm);padding:14px 16px;margin-bottom:8px;box-shadow:var(--shadow);display:flex;align-items:center;justify-content:space-between}
.user-card .uc-info{flex:1}
.user-card .uc-name{font-size:14px;font-weight:500}
.user-card .uc-role{font-size:11px;color:var(--text2);margin-top:2px}
.user-card .uc-role.admin{color:var(--danger);font-weight:500}
.user-card .uc-acts{display:flex;gap:4px}
.user-card .uc-acts button{padding:4px 12px;font-size:11px;border-radius:8px;border:1px solid var(--border);background:none;cursor:pointer}
.user-card .uc-acts .ue-btn{color:var(--primary);border-color:var(--primary)}
.user-card .uc-acts .ud-btn{color:var(--danger);border-color:var(--danger)}
.q-card{background:var(--card);border-radius:var(--radius-sm);padding:14px 16px;margin-bottom:8px;box-shadow:var(--shadow);display:flex;justify-content:space-between;align-items:center}
.q-card .qc-info{flex:1}
.q-card .qc-name{font-size:14px;font-weight:500}
.q-card .qc-meta{font-size:11px;color:var(--text2);margin-top:2px}
.q-card .qc-acts{display:flex;gap:4px}
.q-card .qc-acts button{padding:4px 12px;font-size:11px;border-radius:8px;border:1px solid var(--border);background:none;cursor:pointer}
.toast{position:fixed;top:60px;left:50%;transform:translateX(-50%);background:rgba(0,0,0,.78);color:#fff;padding:10px 24px;border-radius:20px;font-size:13px;z-index:9999;opacity:0;transition:opacity .3s;pointer-events:none;white-space:nowrap}
.toast.show{opacity:1}
.auth-mask{position:fixed;inset:0;z-index:200;background:rgba(0,0,0,.35);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);display:none;align-items:center;justify-content:center;padding:24px}
.auth-mask.show{display:flex}
.auth-card{background:var(--card);border-radius:var(--radius);padding:32px 24px 24px;max-width:340px;width:100%;text-align:center;box-shadow:var(--shadow-lg);animation:fadeUp .3s ease}
.auth-card h2{font-size:20px;font-weight:700;margin-bottom:4px}
.auth-card .adesc{font-size:13px;color:var(--text2);margin-bottom:20px}
.auth-card input{width:100%;border:1.5px solid var(--border);border-radius:var(--radius-sm);padding:12px 16px;font-size:15px;outline:none;margin-bottom:10px;text-align:center;transition:.2s}
.auth-card input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,113,227,.1)}
.auth-card .ahint{font-size:12px;color:var(--danger);min-height:18px;margin-bottom:6px}
.auth-card .asubmit{width:100%;padding:14px;border:none;border-radius:var(--radius-sm);font-size:15px;font-weight:600;cursor:pointer;background:var(--primary);color:#fff;transition:.2s}
.auth-card .asubmit:disabled{background:var(--text3);cursor:not-allowed}
@media(min-width:600px){.page{max-width:520px;margin:0 auto}}
@media(min-width:768px){.modal-sheet.qe-modal{max-width:none;width:90vw}}

/* ===== New Page Styles ===== */
.stat-cards{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:12px 0}
.stat-card{background:var(--card);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);text-align:center}
.stat-card .sc-val{font-size:28px;font-weight:700;margin-bottom:2px}
.stat-card .sc-label{font-size:12px;color:var(--text2)}
.stat-card.sc-primary .sc-val{color:var(--primary)}
.stat-card.sc-success .sc-val{color:var(--success)}
.stat-card.sc-warning .sc-val{color:var(--warning)}
.stat-card.sc-danger .sc-val{color:var(--danger)}
.chart-card{background:var(--card);border-radius:var(--radius);padding:16px;margin-bottom:12px;box-shadow:var(--shadow)}
.chart-card h4{font-size:14px;font-weight:600;margin-bottom:12px}
.chart-card canvas{width:100%!important;height:auto!important}
.group-card{background:var(--card);border-radius:var(--radius-sm);padding:14px 16px;margin-bottom:8px;box-shadow:var(--shadow);display:flex;align-items:center;justify-content:space-between}
.group-card .gc-info{flex:1}
.group-card .gc-name{font-size:14px;font-weight:500}
.group-card .gc-meta{font-size:11px;color:var(--text2);margin-top:2px}
.group-card .gc-acts{display:flex;gap:4px}
.group-card .gc-acts button{padding:4px 12px;font-size:11px;border-radius:8px;border:1px solid var(--border);background:none;cursor:pointer}
.import-drop{border:2px dashed var(--border);border-radius:var(--radius);padding:40px 20px;text-align:center;background:var(--card);cursor:pointer;transition:.2s;margin-bottom:12px}
.import-drop:hover,.import-drop.dragover{border-color:var(--primary);background:var(--primary-light)}
.import-drop .id-icon{font-size:40px;margin-bottom:8px}
.import-drop .id-text{font-size:14px;color:var(--text2)}
.import-drop .id-hint{font-size:12px;color:var(--text3);margin-top:4px}
.profile-card{background:var(--card);border-radius:var(--radius);padding:20px;margin-bottom:12px;box-shadow:var(--shadow);text-align:center}
.profile-card .pf-avatar{width:60px;height:60px;border-radius:50%;background:linear-gradient(135deg,var(--primary),#8b5cf6);display:flex;align-items:center;justify-content:center;margin:0 auto 10px;font-size:24px;color:#fff;font-weight:700}
.profile-card .pf-name{font-size:18px;font-weight:600}
.profile-card .pf-role{font-size:12px;color:var(--text2);margin-top:2px}
.weak-card{background:var(--card);border-radius:var(--radius-sm);padding:12px 16px;margin-bottom:6px;box-shadow:var(--shadow);display:flex;align-items:center;gap:10px}
.weak-card .wk-name{flex:1;font-size:13px;font-weight:500}
.weak-card .wk-bar{width:100px;height:6px;background:var(--bg);border-radius:3px;overflow:hidden}
.weak-card .wk-fill{height:100%;background:var(--danger);border-radius:3px}
.weak-card .wk-pct{font-size:12px;color:var(--danger);font-weight:600;min-width:40px;text-align:right}
.rec-expand{display:none;margin-top:8px;padding-top:8px;border-top:1px solid var(--border)}
.rec-expand.show{display:block}
.mode-select{display:flex;gap:8px;margin-bottom:12px}
.mode-select button{flex:1;padding:10px;border:1.5px solid var(--border);border-radius:var(--radius-sm);background:var(--card);font-size:13px;cursor:pointer;transition:.2s;font-weight:500;color:var(--text2)}
.mode-select button.active{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}
.batch-bar{display:flex;gap:6px;margin:8px 0;align-items:center}
.batch-bar select{padding:6px 10px;border:1px solid var(--border);border-radius:8px;font-size:13px}
.batch-bar button{padding:6px 14px;border:1.5px solid var(--primary);border-radius:8px;background:none;color:var(--primary);font-size:12px;cursor:pointer;font-weight:500}
.filter-bar{display:flex;gap:6px;margin-bottom:12px;flex-wrap:wrap}
.filter-bar select{padding:6px 10px;border:1px solid var(--border);border-radius:8px;font-size:13px;background:var(--card)}

@media(min-width:600px){.page{max-width:520px;margin:0 auto}}
#pScore{padding-bottom:260px}

/* ===== Exam Mode Styles ===== */
.exam-start-btn{width:100%;padding:16px;border:none;border-radius:var(--radius);font-size:16px;font-weight:600;cursor:pointer;background:linear-gradient(135deg,var(--primary),#8b5cf6);color:#fff;box-shadow:0 4px 15px rgba(0,113,227,.3);transition:.2s;margin:16px 0 8px;display:flex;align-items:center;justify-content:center;gap:8px}
.exam-start-btn:active{transform:scale(.98)}
.exam-q-nav{display:flex;gap:6px;flex-wrap:wrap;padding:8px 0;margin-bottom:8px}
.exam-q-nav .eq-item{width:36px;height:36px;border-radius:8px;border:1.5px solid var(--border);background:var(--card);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:500;cursor:pointer;transition:.2s}
.exam-q-nav .eq-item.current{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}
.exam-q-nav .eq-item.done{border-color:var(--success);color:var(--success);background:var(--success-bg)}

/* Exam Floating Bottom Bar */
.exam-float-bar{position:fixed;bottom:0;left:0;right:0;z-index:200;background:rgba(255,255,255,.95);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-top:1px solid var(--border);box-shadow:0 -4px 24px rgba(0,0,0,.1);padding:8px 12px env(safe-area-inset-bottom,8px);transition:transform .3s}
.efb-nav{display:flex;gap:5px;justify-content:center;padding:4px 0 6px;overflow-x:auto;white-space:nowrap}
.efb-nav .eq-item{min-width:30px;height:30px;border-radius:7px;border:1.5px solid var(--border);background:var(--card);display:inline-flex;align-items:center;justify-content:center;font-size:11px;font-weight:500;cursor:pointer;transition:.2s;flex-shrink:0}
.efb-nav .eq-item.current{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}
.efb-nav .eq-item.done{border-color:var(--success);color:var(--success);background:var(--success-bg)}
.efb-timer{display:flex;align-items:center;gap:10px;padding:6px 0;border-top:1px dashed var(--border)}
.efb-timer-main{font-size:20px;font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:1px;color:var(--text1);min-width:60px}
.efb-timer-phase{display:flex;gap:4px;flex:1}
.efb-timer-phase button{flex:1;padding:4px 6px;border:1.5px solid var(--border);border-radius:8px;background:var(--card);font-size:10px;font-weight:500;cursor:pointer;transition:.2s;color:var(--text2);text-align:center}
.efb-timer-phase button.active{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}
.efb-timer-phase button .tp-time{display:block;font-size:11px;font-weight:600;margin-top:1px}
.efb-timer-btns{display:flex;gap:4px}
.efb-timer-btns button{padding:4px 10px;border:none;border-radius:8px;font-size:11px;font-weight:600;cursor:pointer;transition:.2s;white-space:nowrap}
.efb-t-start{background:var(--success);color:#fff}
.efb-t-stop{background:var(--danger);color:#fff}
.efb-t-reset{background:var(--bg);color:var(--text2);border:1px solid var(--border)!important}
.efb-actions{display:flex;gap:6px;padding-top:6px;border-top:1px dashed var(--border)}
.efb-prev{flex:1;padding:8px;border:1.5px solid var(--border);border-radius:8px;background:var(--card);font-size:12px;font-weight:500;cursor:pointer;color:var(--text2);transition:.2s}
.efb-prev:active{background:var(--bg)}
.efb-next{flex:1;padding:8px;border:none;border-radius:8px;background:var(--primary);color:#fff;font-size:12px;font-weight:600;cursor:pointer;transition:.2s}
.efb-next:active{opacity:.85}
.efb-finish{flex:1;padding:8px;border:none;border-radius:8px;background:var(--success);color:#fff;font-size:12px;font-weight:600;cursor:pointer;transition:.2s}
.efb-finish:active{opacity:.85}
.exam-selected-panel{background:var(--card);border-radius:var(--radius);padding:12px;box-shadow:var(--shadow);margin-bottom:12px}
.exam-selected-panel h4{font-size:13px;font-weight:600;margin-bottom:8px;color:var(--text2)}
.exam-selected-item{display:flex;align-items:center;gap:6px;padding:8px 10px;background:var(--bg);border-radius:8px;margin-bottom:4px;font-size:13px}
.exam-selected-item .esi-name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:500}
.exam-selected-item .esi-cat{font-size:11px;color:var(--text2)}
.exam-selected-item button{background:none;border:none;color:var(--danger);font-size:16px;cursor:pointer;padding:2px 6px}
.exam-add-btn{width:30px;height:30px;border-radius:50%;border:1.5px solid var(--primary);background:none;color:var(--primary);font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:.2s;flex-shrink:0}
.exam-add-btn:active{background:var(--primary-light)}
.exam-add-btn.added{border-color:var(--success);color:var(--success);background:var(--success-bg)}
.exam-nav-bottom{display:flex;gap:8px;padding:12px 0}
.exam-nav-bottom button{flex:1;padding:12px;border:none;border-radius:var(--radius-sm);font-size:14px;font-weight:500;cursor:pointer;transition:.2s}
.exam-nav-bottom .en-prev{background:var(--bg);color:var(--text2)}
.exam-nav-bottom .en-next{background:var(--primary);color:#fff}
.exam-nav-bottom .en-done{background:var(--success);color:#fff}
.exam-nav-bottom .en-finish{background:linear-gradient(135deg,var(--primary),#8b5cf6);color:#fff;font-weight:600}
.exam-nav-bottom button:disabled{opacity:.4;cursor:not-allowed;transform:none}
.exam-preview-row{display:flex;align-items:center;gap:10px;padding:12px;background:var(--card);border-radius:var(--radius-sm);margin-bottom:6px;box-shadow:var(--shadow)}
.exam-preview-row .ep-idx{font-size:12px;color:var(--text2);min-width:24px}
.exam-preview-row .ep-name{flex:1;font-size:13px;font-weight:500}
.exam-preview-row .ep-score{font-size:16px;font-weight:700;min-width:40px;text-align:right}
.exam-preview-row .ep-score.pass{color:var(--success)}
.exam-preview-row .ep-score.fail{color:var(--danger)}
.exam-preview-row .ep-badge{font-size:11px;padding:2px 8px;border-radius:8px}
.exam-preview-row .ep-badge.pass{background:var(--success-bg);color:var(--success)}
.exam-preview-row .ep-badge.fail{background:var(--danger-bg);color:var(--danger)}
.exam-preview-row .ep-edit{background:none;border:1px solid var(--primary);color:var(--primary);padding:4px 10px;border-radius:8px;font-size:11px;cursor:pointer}
.random-draw-cat{display:flex;align-items:center;gap:8px;padding:10px 12px;background:var(--bg);border-radius:8px;margin-bottom:6px;font-size:13px;cursor:pointer}
.random-draw-cat input{width:18px;height:18px;accent-color:var(--primary)}
#pExamProgress{padding-bottom:20px}