:root{
    --bg:#eef2f7;
    --panel:#ffffff;
    --ink:#182133;
    --muted:#748095;
    --line:#e3e8f0;
    --primary:#2764e7;
    --primary-dark:#1747b6;
    --success:#11a76c;
    --warning:#b97705;
    --danger:#d93434;
    --shadow:0 20px 55px rgba(31,44,71,.10);
    --radius:18px;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,Segoe UI,Roboto,Arial,sans-serif;font-size:15px;line-height:1.45}
a{color:inherit;text-decoration:none}
.app-shell{min-height:100vh;display:flex}
.sidebar{width:282px;background:#141b2d;color:#fff;padding:24px 18px;position:fixed;inset:0 auto 0 0;display:flex;flex-direction:column;gap:22px;box-shadow:8px 0 35px rgba(16,22,38,.18);z-index:5}
.brand-block{display:flex;align-items:center;gap:13px;padding:6px 7px 18px;border-bottom:1px solid rgba(255,255,255,.08)}
.brand-mark{width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,#4f8cff,#8bd4ff);display:grid;place-items:center;font-weight:900;box-shadow:0 16px 30px rgba(28,119,255,.28)}
.brand-block strong{display:block;font-size:17px;letter-spacing:.2px}.brand-block span{display:block;color:#9ba7bd;font-size:12px;margin-top:2px}
.side-nav{display:grid;gap:8px}.side-nav a{display:flex;align-items:center;gap:11px;color:#c9d2e6;padding:12px 13px;border-radius:13px;transition:.18s ease}.side-nav a span{width:24px;height:24px;border-radius:9px;background:rgba(255,255,255,.08);display:grid;place-items:center;color:#fff}.side-nav a:hover,.side-nav a.active{background:rgba(255,255,255,.12);color:#fff;transform:translateX(2px)}
.sidebar-note{margin-top:auto;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.08);border-radius:16px;padding:14px;color:#b7c3d9;font-size:12px}
.main-panel{margin-left:282px;width:calc(100% - 282px);padding:24px;min-height:100vh}.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;gap:15px}.topbar h1{font-size:28px;line-height:1.1;margin:0 0 6px}.topbar p{margin:0;color:var(--muted)}
.user-pill{display:flex;align-items:center;gap:8px;background:var(--panel);border:1px solid var(--line);border-radius:999px;padding:10px 14px;color:var(--muted);box-shadow:0 8px 25px rgba(25,38,63,.05)}.user-pill span{width:9px;height:9px;background:var(--success);border-radius:50%;box-shadow:0 0 0 4px rgba(17,167,108,.12)}
.cards-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-bottom:18px}.stat-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;min-height:120px;position:relative;overflow:hidden}.stat-card:after{content:"";position:absolute;right:-28px;top:-28px;width:92px;height:92px;border-radius:50%;background:rgba(39,100,231,.08)}.stat-card span{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.08em}.stat-card strong{display:block;font-size:32px;margin-top:10px}.stat-card p{margin:4px 0 0;color:var(--muted);font-size:13px}
.section-wrapper{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;margin-bottom:18px}.section-title{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:15px}.section-title h2{font-size:18px;margin:0}.section-title p{margin:3px 0 0;color:var(--muted);font-size:13px}.section-actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.notice-panel{background:#fff8e8;border-color:#f6deb1;color:#795115}.notice-panel strong{display:block;margin-bottom:5px}
.table-wrap{overflow:auto;max-height:590px;border:1px solid var(--line);border-radius:15px}.data-table{width:100%;border-collapse:separate;border-spacing:0;min-width:850px}.data-table th{position:sticky;top:0;background:#f7f9fc;z-index:1;color:#607086;text-align:left;font-size:12px;text-transform:uppercase;letter-spacing:.07em;padding:12px;border-bottom:1px solid var(--line)}.data-table td{padding:13px 12px;border-bottom:1px solid var(--line);vertical-align:top}.data-table tr:last-child td{border-bottom:none}.muted{color:var(--muted)}.truncate{max-width:420px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.badge{display:inline-flex;align-items:center;border-radius:999px;padding:4px 9px;background:#edf3ff;color:#1f58d8;font-size:12px;font-weight:700}.badge.good{background:#eaf9f1;color:#0a8151}.badge.warn{background:#fff3d8;color:#a16207}.badge.gray{background:#eef1f6;color:#68758b}.actions{display:flex;gap:8px;flex-wrap:wrap}.btn,button.btn{border:0;border-radius:12px;padding:10px 13px;font-weight:700;cursor:pointer;background:#eef3fb;color:#1e2a3d;display:inline-flex;align-items:center;gap:7px;font-size:14px}.btn:hover{filter:brightness(.98);transform:translateY(-1px)}.btn.primary{background:var(--primary);color:#fff}.btn.primary:hover{background:var(--primary-dark)}.btn.danger{background:#ffeded;color:var(--danger)}.btn.warning{background:#fff3d8;color:#955b00}.btn.ghost{background:transparent;border:1px solid var(--line)}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.form-grid.one{grid-template-columns:1fr}.field{display:grid;gap:7px}.field.full{grid-column:1/-1}label{font-size:13px;font-weight:800;color:#354158}input[type=text],input[type=number],input[type=date],textarea,select{width:100%;border:1px solid var(--line);border-radius:13px;background:#fbfcfe;padding:12px 13px;font:inherit;color:var(--ink);outline:none}textarea{min-height:115px;resize:vertical}input:focus,textarea:focus,select:focus{border-color:#8db0ff;box-shadow:0 0 0 4px rgba(39,100,231,.10)}.help{font-size:12px;color:var(--muted)}
.answer-grid{display:grid;gap:12px}.answer-row{display:grid;grid-template-columns:46px minmax(0,1fr) 118px 110px;gap:10px;align-items:center;padding:11px;border:1px solid var(--line);border-radius:15px;background:#fbfcfe}.answer-letter{width:36px;height:36px;border-radius:12px;background:#edf3ff;color:#1f58d8;display:grid;place-items:center;font-weight:900}.check-card{display:flex;align-items:center;gap:8px;font-weight:800;color:#42506a}.check-card input{width:18px;height:18px}.form-actions{display:flex;align-items:center;gap:10px;margin-top:18px;flex-wrap:wrap}.alert{border-radius:14px;padding:13px 15px;margin-bottom:18px;border:1px solid var(--line);background:#fff}.alert-success{border-color:#bdebd7;background:#eaf9f1;color:#0a7047}.alert-danger{border-color:#ffc6c6;background:#fff0f0;color:#a91f1f}.alert-warning{border-color:#f6deb1;background:#fff8e8;color:#795115}.empty-card{text-align:center;padding:38px;border:1px dashed #cfd8e6;border-radius:17px;background:#fbfcfe}.empty-card strong{font-size:18px}.empty-card p{color:var(--muted);max-width:560px;margin:8px auto 18px}.filter-bar{display:flex;gap:10px;flex-wrap:wrap;align-items:end}.filter-bar .field{min-width:260px}.pagination-bar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:14px;flex-wrap:wrap}.pagination-info{color:var(--muted);font-size:13px;font-weight:700}.pagination{display:flex;gap:7px;align-items:center;justify-content:flex-end;flex-wrap:wrap;max-width:100%;overflow:hidden}.pagination a,.pagination span{min-width:38px;text-align:center;padding:8px 11px;border-radius:11px;background:#fff;border:1px solid var(--line);color:#475569;font-size:13px;font-weight:800}.pagination .current{background:var(--primary);color:#fff;border-color:var(--primary)}.pagination .ellipsis,.pagination .disabled{background:transparent}.pagination .disabled{color:#9aa6b7;cursor:not-allowed}.pagination .ellipsis{border-color:transparent;min-width:24px;padding-left:4px;padding-right:4px}.danger-zone{border-color:#ffcaca;background:#fff8f8}.two-col{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}.mini-list{display:grid;gap:10px}.mini-item{border:1px solid var(--line);background:#fbfcfe;border-radius:14px;padding:12px}.mini-item strong{display:block}.mini-item span{color:var(--muted);font-size:13px}
@media (max-width:1100px){.cards-row{grid-template-columns:repeat(2,minmax(0,1fr))}.two-col{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}.answer-row{grid-template-columns:40px 1fr}.answer-row .check-card,.answer-row .btn{grid-column:2}}
@media (max-width:820px){.sidebar{position:relative;width:100%;inset:auto}.app-shell{display:block}.main-panel{margin-left:0;width:100%;padding:16px}.cards-row{grid-template-columns:1fr}.topbar{align-items:flex-start;flex-direction:column}.section-title{align-items:flex-start;flex-direction:column}.filter-bar .field{min-width:100%}}

/* Question form: keep Question number and Points perfectly aligned */
.question-meta-grid{grid-template-columns:repeat(2,minmax(0,1fr));align-items:start}
.question-meta-grid .field-compact input{height:46px;box-sizing:border-box}
.question-meta-grid .help-placeholder{visibility:hidden}
@media (max-width:1100px){.question-meta-grid{grid-template-columns:1fr}.question-meta-grid .help-placeholder{display:none}}

/* Score filters: make From/To date inputs match other fields */
input[type=date]{
    min-height:46px;
    line-height:1.2;
    appearance:auto;
    -webkit-appearance:auto;
}
.filter-bar .small-field input[type=date]{
    height:46px;
}

/* Scores */
.badge.bad{background:#ffeded;color:var(--danger)}
.scores-table .uid-text{font-size:11px;max-width:260px;display:inline-block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.small-field{min-width:170px}.detail-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.detail-grid>div{border:1px solid var(--line);background:#fbfcfe;border-radius:14px;padding:13px;min-width:0}.detail-grid span{display:block;color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.06em;margin-bottom:5px}.detail-grid strong{display:block;overflow-wrap:anywhere}.wrong-list{display:grid;gap:14px}.wrong-card{border:1px solid var(--line);border-radius:16px;background:#fbfcfe;padding:15px}.wrong-card h3{margin:0 0 8px;font-size:16px}.question-text{font-weight:800;white-space:pre-wrap}.score-answer-list{display:grid;gap:8px;margin-top:12px}.score-answer{border:1px solid var(--line);border-radius:13px;background:#fff;padding:10px 12px}.score-answer span{display:inline-flex;border-radius:999px;background:#eef1f6;color:#68758b;font-size:11px;font-weight:900;padding:3px 8px;margin-bottom:6px}.score-answer p{margin:0;white-space:pre-wrap}.score-answer.correct{border-color:#bdebd7;background:#eaf9f1}.score-answer.correct span{background:var(--success);color:#fff}.score-answer.wrong{border-color:#ffc6c6;background:#fff0f0}.score-answer.wrong span{background:var(--danger);color:#fff}.explanation-box{margin-top:12px;border-radius:13px;background:#fff8e8;border:1px solid #f6deb1;color:#795115;padding:12px}code{background:rgba(0,0,0,.06);border-radius:7px;padding:2px 6px}pre{white-space:pre-wrap;overflow:auto;margin:0}
@media (max-width:820px){.detail-grid{grid-template-columns:1fr}.small-field{min-width:100%}.scores-table .uid-text{max-width:170px}}

/* Quick action cards for test tools */
.quick-actions-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:8px}.quick-action-card{display:block;text-decoration:none;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:0 12px 30px rgba(15,23,42,.06);transition:.18s ease}.quick-action-card:hover{transform:translateY(-2px);border-color:rgba(37,99,235,.35);box-shadow:0 18px 38px rgba(15,23,42,.10)}.quick-action-card span{display:flex;width:42px;height:42px;border-radius:14px;background:#eef4ff;color:var(--primary);align-items:center;justify-content:center;font-size:20px;font-weight:1000;margin-bottom:12px}.quick-action-card strong{display:block;font-size:16px;margin-bottom:6px}.quick-action-card p{margin:0;color:var(--muted);font-size:13px;line-height:1.45}@media(max-width:1180px){.quick-actions-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:700px){.quick-actions-grid{grid-template-columns:1fr}}

/* Security / authentication */
input[type=password]{width:100%;border:1px solid var(--line);border-radius:13px;background:#fbfcfe;padding:12px 13px;font:inherit;color:var(--ink);outline:none}
input[type=password]:focus{border-color:#8db0ff;box-shadow:0 0 0 4px rgba(39,100,231,.10)}
.topbar-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.inline-form{display:inline;margin:0}.btn:disabled,button:disabled{opacity:.55;cursor:not-allowed;transform:none!important}
.login-body{min-height:100vh;display:grid;place-items:center;padding:20px;background:radial-gradient(circle at top,#fff 0,#eef3f9 50%,#e5ebf4 100%)}
.login-shell{width:min(460px,100%)}.login-card{background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:0 28px 80px rgba(24,33,51,.15);padding:28px}.login-brand{display:flex;align-items:center;gap:13px;padding-bottom:20px;border-bottom:1px solid var(--line)}.login-brand strong{display:block;font-size:18px}.login-brand span{display:block;color:var(--muted);font-size:12px;margin-top:2px}.login-heading{padding:24px 0 8px}.login-heading h1{margin:0 0 6px;font-size:30px}.login-heading p{margin:0;color:var(--muted)}.login-form{display:grid;gap:15px;margin-top:16px}.login-button{width:100%;justify-content:center;min-height:48px;margin-top:3px}.login-security{display:flex;align-items:flex-start;gap:9px;margin-top:20px;padding-top:18px;border-top:1px solid var(--line);font-size:12px;color:var(--muted);line-height:1.5}.security-dot{flex:0 0 auto;width:9px;height:9px;border-radius:50%;background:var(--success);margin-top:4px;box-shadow:0 0 0 4px rgba(17,167,108,.12)}
@media(max-width:820px){.topbar-actions{width:100%;justify-content:space-between}.login-body{padding:12px}.login-card{padding:22px;border-radius:20px}}
.security-table .security-detail{max-width:320px;overflow-wrap:anywhere}.security-table .security-agent{max-width:360px;overflow-wrap:anywhere;color:var(--muted);font-size:12px}