:root{
      --maroon:#a00815; --maroon-2:#d71920; --gold:#f6c431; --gold-2:#ffe487;
      --ink:#0b2f42; --ink-2:#10465f; --bg:#fff8ed; --paper:#ffffff; --muted:#5f6b7a;
      --line:#f0dca0; --good:#087443; --warn:#d97706; --bad:#c21b2a; --blue:#0067a8;
      --shadow:0 20px 50px rgba(11,47,66,.16); --radius:18px;
    }
    *{box-sizing:border-box} html,body{height:100%}
    body{margin:0;font-family:"Segoe UI",Roboto,Arial,sans-serif;background:
      radial-gradient(circle at 8% 3%, rgba(255,203,49,.38), transparent 30%),
      radial-gradient(circle at 96% 0%, rgba(229,32,42,.14), transparent 28%),
      linear-gradient(135deg,#fffdf7 0%, #fff6dd 45%, #eaf7fb 100%); color:var(--ink)}
    button,input,select,textarea{font:inherit} button{cursor:pointer}
    .hide{display:none!important}.muted{color:var(--muted)}.danger{color:var(--bad)}.ok{color:var(--good)}.warn{color:var(--warn)}
    .pill{display:inline-flex;align-items:center;gap:6px;border:1px solid #f3d36b;border-radius:999px;padding:5px 10px;background:linear-gradient(135deg,#fffdf4,#fff1b8);color:#5b2700;font-size:12px;font-weight:700}
    .app-shell{min-height:100vh;display:grid;grid-template-columns:280px 1fr;background:linear-gradient(90deg,rgba(7,24,33,.06),transparent)}
    .sidebar{background:linear-gradient(180deg,#0d3b53 0%,#092e42 48%,#8f0712 100%);color:#fff;padding:22px 18px;position:sticky;top:0;height:100vh;overflow:auto;border-right:4px solid var(--gold)}
    .brand{display:flex;gap:13px;align-items:center;margin-bottom:18px}.seal{width:64px;height:64px;border-radius:18px;display:grid;place-items:center;background:linear-gradient(145deg,#fff7cf,#ffffff);box-shadow:0 0 0 3px rgba(246,196,49,.35),0 12px 28px rgba(11,47,66,.16);padding:4px;flex:0 0 auto}.seal img{width:100%;height:100%;object-fit:contain;display:block;filter:drop-shadow(0 2px 4px rgba(0,0,0,.18))}.brand h1{font-size:15px;margin:0;line-height:1.25;text-transform:uppercase}.brand p{margin:4px 0 0;color:#ffeaa3;font-size:12px}.login-card .brand p{color:var(--muted)}.hero .seal{width:86px;height:86px;border-radius:24px;background:rgba(255,255,255,.94)}.hero .brand h1{font-size:17px}.hero .brand p{color:#fff3c4}
    .nav{display:flex;flex-direction:column;gap:8px;margin-top:18px}.nav button{border:0;text-align:left;border-radius:12px;padding:12px 13px;background:transparent;color:#d9e6ea;font-weight:700}.nav button:hover,.nav button.active{background:linear-gradient(90deg,#d71920,rgba(246,196,49,.34));color:#fff;box-shadow:inset 4px 0 0 var(--gold)}
    .user-box{border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.06);padding:13px;border-radius:14px;margin:15px 0}.user-box b{display:block}.user-box small{color:#d1d5db}.logout{width:100%;border:1px solid rgba(255,255,255,.25);background:rgba(255,255,255,.08);color:#fff;border-radius:12px;padding:10px;margin-top:10px;font-weight:700}
    .main{padding:26px;min-width:0}.topbar{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:22px}.topbar h2{margin:0;color:var(--maroon);font-size:26px}.topbar .sub{margin-top:4px;color:var(--muted)}
    .card{background:rgba(255,255,255,.94);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}.grid{display:grid;gap:16px}.grid.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}
    .stat{position:relative;overflow:hidden}.stat:after{content:"";position:absolute;right:-40px;top:-40px;width:120px;height:120px;border-radius:50%;background:rgba(216,169,40,.18)}.stat b{font-size:30px;color:var(--maroon);display:block}.stat span{color:var(--muted);font-weight:700}.stat small{display:block;margin-top:8px;color:#667085}
    .btn{border:0;border-radius:12px;padding:10px 14px;font-weight:800;background:var(--ink);color:#fff;box-shadow:0 10px 24px rgba(7,24,33,.15)}.btn.primary{background:linear-gradient(135deg,#d71920,#a00815)}.btn.gold{background:linear-gradient(135deg,#ffd45a,var(--gold));color:#281900}.btn.light{background:#fff;color:var(--ink);border:1px solid var(--line);box-shadow:none}.btn.danger{background:var(--bad);color:#fff}.btn.small{padding:7px 10px;border-radius:10px;font-size:12px}.btn:disabled{opacity:.55;cursor:not-allowed}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.between{justify-content:space-between}.right{justify-content:flex-end}
    label{display:block;font-weight:800;color:#263238;margin:10px 0 6px}.input,select,textarea{width:100%;border:1px solid #d9cfb8;background:#fffdf9;border-radius:12px;padding:11px 12px;outline:none}.input:focus,select:focus,textarea:focus{border-color:var(--gold);box-shadow:0 0 0 3px rgba(216,169,40,.22)}textarea{min-height:110px;resize:vertical}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
    .table-wrap{overflow:auto;border:1px solid var(--line);border-radius:14px}table{width:100%;border-collapse:collapse;background:#fff}th,td{padding:11px 12px;border-bottom:1px solid #efe7d4;text-align:left;vertical-align:top}th{background:linear-gradient(135deg,#fff0b3,#ffe487);color:#7a0b12;font-size:13px;text-transform:uppercase}tr:hover td{background:#fffaf0}
    .login-page{min-height:100vh;display:grid;grid-template-columns:1.1fr .9fr;align-items:stretch}.hero{background:linear-gradient(135deg,rgba(11,47,66,.96) 0%,rgba(160,8,21,.93) 66%,rgba(215,25,32,.88) 100%), url('');color:#fff;padding:54px;display:flex;flex-direction:column;justify-content:center;position:relative;overflow:hidden}.hero:before{content:"";position:absolute;inset:auto -120px -120px auto;width:330px;height:330px;border-radius:50%;background:rgba(246,196,49,.24)}.hero h1{font-size:38px;line-height:1.18;margin:20px 0 12px;text-transform:uppercase}.hero p{font-size:17px;line-height:1.65;color:#f2ecd4;max-width:780px}.hero .motto{display:inline-flex;border:1px solid rgba(243,211,107,.55);border-radius:999px;padding:8px 14px;color:#ffe38a;font-weight:800;width:max-content}.login-card-wrap{display:grid;place-items:center;padding:30px}.login-card{width:min(460px,100%);background:rgba(255,253,247,.94);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:24px;padding:26px}.login-card h2{margin:0 0 6px;color:var(--maroon);font-size:26px}.login-card .links{display:flex;justify-content:space-between;margin-top:12px}.link{border:0;background:transparent;color:var(--maroon);font-weight:800;padding:0}.notice{background:#fff6dc;border:1px solid #f3d36b;color:#5c3d00;padding:12px;border-radius:14px;line-height:1.5}
    .section-title{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}.section-title h3{margin:0;color:var(--maroon)}.question-card{border:1px solid var(--line);border-radius:16px;padding:14px;background:#fff}.question-card h4{margin:0 0 10px}.option{display:flex;gap:8px;align-items:flex-start;padding:8px 10px;border:1px solid #eee2c8;border-radius:12px;margin:7px 0;background:#fffefa}.option.correct{border-color:#74c69d;background:#effaf3}.option.selected{border-color:var(--gold);background:#fff6dc}.q-note{font-size:12px;color:#7c4a00;margin-top:8px;background:#fff6dc;border:1px dashed #e5b94e;border-radius:10px;padding:8px}
    .exam-layout{display:grid;grid-template-columns:1fr 280px;gap:16px}.timer{font-size:32px;font-weight:900;color:var(--maroon)}.q-nav{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}.q-nav button{border:1px solid var(--line);border-radius:10px;padding:9px;background:#fff;font-weight:800}.q-nav button.done{background:#e9f7ef;border-color:#76c893}.q-nav button.active{background:var(--maroon);color:#fff}.q-nav button.warned{box-shadow:0 0 0 2px #f59e0b inset}
    .progress{height:12px;border-radius:999px;background:#eadfc5;overflow:hidden}.progress i{display:block;height:100%;background:linear-gradient(90deg,var(--maroon),var(--gold));width:0}.bar{height:24px;border-radius:999px;background:#eadfc5;position:relative;overflow:hidden}.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--maroon),var(--gold));min-width:2px}.bar span{position:absolute;left:10px;top:3px;font-size:12px;font-weight:800;color:#2d1f00}.modal{position:fixed;inset:0;background:rgba(7,24,33,.55);display:grid;place-items:center;padding:20px;z-index:20}.modal .dialog{width:min(900px,100%);max-height:90vh;overflow:auto;background:var(--paper);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);padding:20px}.toast{position:fixed;right:24px;bottom:24px;background:#071821;color:#fff;border-left:5px solid var(--gold);border-radius:14px;padding:14px 16px;box-shadow:var(--shadow);z-index:30;max-width:420px}.kbd{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;background:#f3ead0;border:1px solid #dfd0a8;border-radius:7px;padding:2px 6px;font-size:12px}.empty{padding:28px;text-align:center;color:#667085;border:1px dashed #d8cba7;border-radius:16px;background:#fffdf8}.footer-note{margin-top:20px;color:#667085;font-size:12px;text-align:center}.only-print{display:none}

    .section-picker{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:10px}.section-check{display:flex;align-items:flex-start;gap:10px;margin:0;padding:12px;border:1px solid #f1d78a;border-radius:14px;background:linear-gradient(135deg,#fffefa,#fff7dc);font-weight:700;cursor:pointer;min-height:72px}.section-check:hover{border-color:var(--gold);box-shadow:0 8px 22px rgba(246,196,49,.18)}.section-check input{margin-top:3px;accent-color:var(--maroon)}.section-check span{display:block}.section-check small{display:block;margin-top:4px;color:var(--muted);font-weight:600}.section-picker-toolbar{margin-top:8px;margin-bottom:8px}
    @media(max-width:1000px){.app-shell{grid-template-columns:1fr}.sidebar{position:relative;height:auto}.grid.cols-4,.grid.cols-3,.grid.cols-2,.form-grid,.exam-layout,.login-page,.section-picker{grid-template-columns:1fr}.hero{padding:30px}.main{padding:18px}.topbar{align-items:flex-start;flex-direction:column}}
    @media print{.sidebar,.topbar .row,.btn,.nav,.login-page{display:none!important}.app-shell{display:block}.main{padding:0}.card{box-shadow:none;border:0}.only-print{display:block}.no-print{display:none!important}}

/* Bản tinh chỉnh giao diện: ẩn các cảnh báo kỹ thuật khỏi màn hình đăng nhập/sidebar; giữ ghi chú kỹ thuật trong mục Thiết lập dạng thu gọn. */
  .notice.security{display:none!important}
  .login-page.polished-login{
    min-height:100vh;
    display:grid;
    grid-template-columns:minmax(520px,1.05fr) minmax(420px,.95fr);
    background:
      radial-gradient(circle at 14% 10%, rgba(255,218,96,.45), transparent 28%),
      radial-gradient(circle at 88% 8%, rgba(215,25,32,.20), transparent 34%),
      linear-gradient(135deg,#fffdf7 0%,#fff4d6 42%,#eefbff 100%);
    overflow:hidden;
  }
  .hero.polished-hero{
    padding:58px 64px;
    background:
      radial-gradient(circle at 78% 82%, rgba(255,197,49,.22), transparent 30%),
      linear-gradient(135deg,#0b2f42 0%,#8b0c19 52%,#dc1f2b 100%);
    position:relative;
  }
  .hero.polished-hero:after{
    content:"";position:absolute;right:-140px;bottom:-160px;width:430px;height:430px;border-radius:50%;
    background:linear-gradient(135deg,rgba(255,224,129,.45),rgba(255,255,255,.08));
    border:1px solid rgba(255,255,255,.2);
  }
  .hero-card.polished-hero-card{position:relative;z-index:1;max-width:840px}
  .hero-card.polished-hero-card .seal.big{
    width:94px;height:94px;border-radius:26px;margin:0 0 22px;
    background:linear-gradient(135deg,#ffffff,#fff2bd);
    box-shadow:0 18px 45px rgba(0,0,0,.25),0 0 0 4px rgba(255,214,91,.35);
  }
  .hero-eyebrow{
    display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(255,231,148,.52);
    color:#ffe793;background:rgba(255,255,255,.07);border-radius:999px;padding:9px 15px;
    font-weight:900;text-transform:uppercase;letter-spacing:.4px;margin-bottom:28px;
  }
  .hero-card.polished-hero-card h1{font-size:44px;line-height:1.12;letter-spacing:.2px;margin:8px 0 16px;color:#fff;text-shadow:0 3px 10px rgba(0,0,0,.18)}
  .hero-card.polished-hero-card h2{font-size:24px;margin:0 0 22px;color:#fff7db;text-transform:uppercase}
  .contest-title-banner{font-weight:900;color:#fff8da;font-size:20px;margin:18px 0 10px;text-transform:uppercase}
  .contest-desc{font-size:17px;line-height:1.65;color:#fff4dc;max-width:760px}
  .org-panel{
    margin-top:26px;background:rgba(255,253,240,.94);border:1px solid rgba(255,224,126,.85);
    border-radius:20px;padding:17px 18px;color:#5c3300;box-shadow:0 12px 35px rgba(0,0,0,.12);
  }
  .org-panel b{color:#7a0b12}.org-grid{display:grid;gap:7px;margin-top:8px}.org-grid span{display:block}
  .login-box.polished-box{
    align-self:center;justify-self:center;width:min(540px,calc(100% - 56px));
    background:rgba(255,255,255,.86);border:1px solid rgba(246,196,49,.55);border-radius:28px;
    padding:32px;box-shadow:0 28px 70px rgba(11,47,66,.18);backdrop-filter:blur(8px);
  }
  .login-box.polished-box .login-head{display:flex;gap:16px;align-items:center;margin-bottom:20px}
  .login-box.polished-box .login-head .seal{width:68px;height:68px;border-radius:20px}
  .login-box.polished-box h2{margin:0;color:#8b0c19;font-size:30px;letter-spacing:.2px}
  .login-box.polished-box p{margin:6px 0 0;color:#4b6474;line-height:1.55}
  .login-box.polished-box label{color:#132f40;margin-top:14px}
  .login-box.polished-box .input{background:#fff;border-color:#e9d89d;min-height:50px;font-size:16px}
  .remember{display:flex!important;align-items:center;gap:9px;margin:14px 0 0!important;color:#1b3444!important;font-weight:700!important}
  .btn.full{width:100%;margin-top:18px;min-height:50px;font-size:16px;border-radius:16px}
  .login-links{display:flex;justify-content:space-between;gap:12px;margin-top:16px}
  .login-links a{color:#8b0c19;font-weight:900;text-decoration:none;cursor:pointer}
  .login-links a:hover{text-decoration:underline}
  .login-microcopy{margin-top:18px;border-top:1px dashed #e6d49c;padding-top:14px;color:#5c6570;font-size:13px;line-height:1.55}
  .sidebar .footer-note{display:none!important}
  .tech-note-collapsed{margin-top:12px;border:1px solid #d7e6ef;background:#f7fbfd;color:#123447;border-radius:14px;padding:12px;line-height:1.55}
  .tech-note-collapsed summary{font-weight:900;cursor:pointer;color:#0b2f42}
  .tech-note-collapsed .tech-body{margin-top:10px;color:#415766}
  .topbar h2{letter-spacing:.1px}.card{box-shadow:0 18px 45px rgba(11,47,66,.12)}
  @media (max-width: 980px){
    .login-page.polished-login{grid-template-columns:1fr;overflow:auto}.hero.polished-hero{padding:38px 28px}.hero-card.polished-hero-card h1{font-size:32px}.login-box.polished-box{width:calc(100% - 32px);margin:24px 0 34px;padding:24px}.login-box.polished-box h2{font-size:25px}
  }

.rm-dashboard{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin:14px 0}
  .rm-stat{background:linear-gradient(145deg,#fff,#fff8e8);border:1px solid rgba(246,196,49,.45);border-radius:18px;padding:16px;box-shadow:0 12px 28px rgba(11,47,66,.08)}
  .rm-stat span{display:block;color:#5f6b7a;font-size:12px;text-transform:uppercase;font-weight:800;letter-spacing:.05em}
  .rm-stat b{display:block;color:#8b0c19;font-size:28px;margin-top:6px;line-height:1}
  .rm-stat small{display:block;color:#607180;margin-top:6px}
  .rm-filters{background:linear-gradient(135deg,#fff7dc,#ffffff);border:1px solid rgba(246,196,49,.55);border-radius:18px;padding:14px;margin-bottom:14px;box-shadow:0 10px 22px rgba(11,47,66,.06)}
  .rm-filter-grid{display:grid;grid-template-columns:repeat(6,minmax(130px,1fr));gap:10px;align-items:end}
  .rm-filter-grid label{font-weight:800;color:#7a0b12;font-size:12px;margin-bottom:4px;display:block}
  .rm-filter-grid input,.rm-filter-grid select{width:100%;padding:10px 11px;border:1px solid #e6d6a6;border-radius:12px;background:#fff;font:inherit}
  .rm-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px;justify-content:flex-end}
  .badge{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:5px 10px;font-weight:800;font-size:12px;border:1px solid transparent;white-space:nowrap}
  .badge.gray{background:#f1f5f9;color:#475569;border-color:#cbd5e1}.badge.blue{background:#e0f2fe;color:#075985;border-color:#7dd3fc}.badge.green{background:#dcfce7;color:#166534;border-color:#86efac}.badge.orange{background:#ffedd5;color:#9a3412;border-color:#fdba74}.badge.red{background:#fee2e2;color:#991b1b;border-color:#fca5a5}.badge.maroon{background:#7f1d1d;color:#fff;border-color:#fecaca}
  .rm-table td{font-size:13px}.rm-table th{position:sticky;top:0;z-index:1}.rm-compact{font-size:12px;color:#5f6b7a}.rm-link{color:#0b6fa4;font-weight:800;cursor:pointer;text-decoration:underline;text-underline-offset:3px}.rm-subsection{margin-top:18px}.rm-subsection h3{margin:0 0 10px;color:#7a0b12}
  .chart-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:14px}.mini-chart{background:#fff;border:1px solid #f0dca0;border-radius:18px;padding:16px;box-shadow:0 10px 22px rgba(11,47,66,.05)}.mini-chart h3{margin:0 0 12px;color:#7a0b12}.bar-row{display:grid;grid-template-columns:150px 1fr 45px;gap:8px;align-items:center;margin:9px 0}.bar-label{font-size:12px;color:#314354;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.bar-track{height:13px;background:#f1f5f9;border-radius:999px;overflow:hidden}.bar-fill{height:100%;background:linear-gradient(90deg,#d71920,#f6c431);border-radius:999px;min-width:2px}.bar-value{font-weight:800;color:#7a0b12;text-align:right;font-size:12px}
  .print-sheet{background:#fff;color:#111;padding:24px;line-height:1.55}.print-sheet .national{text-align:center;font-weight:800}.print-sheet h1{text-align:center;font-size:22px;text-transform:uppercase;margin:18px 0 8px}.print-sheet .meta{margin:16px 0}.print-sheet .sign-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:38px;text-align:center;font-weight:800}.print-sheet table{font-size:12px}.time-quick .btn{padding:8px 10px;font-size:12px}.rm-note{background:#f8fafc;border:1px dashed #cbd5e1;border-radius:14px;padding:12px;color:#475569;margin:10px 0}
  @media(max-width:1200px){.rm-dashboard{grid-template-columns:repeat(2,1fr)}.rm-filter-grid{grid-template-columns:repeat(3,1fr)}.chart-grid{grid-template-columns:1fr}}
  @media(max-width:760px){.rm-dashboard{grid-template-columns:1fr}.rm-filter-grid{grid-template-columns:1fr}.bar-row{grid-template-columns:110px 1fr 36px}}
  @media print{.no-print,.sidebar,.topbar .row,.rm-filters,.btn{display:none!important}.app-shell{display:block}.main{padding:0}.card{box-shadow:none;border:1px solid #ddd}.table-wrap{overflow:visible}.print-sheet{padding:0}.rm-dashboard,.chart-grid{display:none}}

.qb-dashboard{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:16px}
  .qb-stat{background:linear-gradient(135deg,#fffdf5,#ffffff);border:1px solid rgba(212,162,45,.45);border-radius:20px;padding:16px;box-shadow:0 10px 28px rgba(22,37,51,.08)}
  .qb-stat span{display:block;color:#6b7280;font-size:13px;font-weight:800;text-transform:uppercase;letter-spacing:.03em}
  .qb-stat b{display:block;font-size:26px;color:#9f101b;margin-top:6px}
  .qb-stat small{color:#334155;font-weight:600}
  .qb-tag{display:inline-flex;align-items:center;gap:6px;padding:4px 9px;border-radius:999px;border:1px solid rgba(212,162,45,.45);background:#fff8dc;color:#6b3a00;font-weight:800;font-size:12px;margin:2px}
  .qb-source{font-size:12px;color:#64748b;margin-top:6px}
  .qb-toolbar{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:12px}
  .qb-danger-note{background:#fff1f2;border:1px solid #fecdd3;color:#7f1d1d;border-radius:14px;padding:10px 12px;font-size:13px;font-weight:650}
  .qb-section-name{font-weight:900;color:#172d3a}.qb-section-meta{font-size:12px;color:#64748b;margin-top:3px;line-height:1.45}
  .qb-import-card{background:linear-gradient(135deg,#fff7ed,#fff);border:1px solid rgba(234,179,8,.45);border-radius:18px;padding:14px;margin-top:12px}
  .qb-import-card h4{margin:0 0 8px;color:#9f101b}
  .qb-empty{padding:20px;text-align:center;color:#64748b;background:#f8fafc;border-radius:16px;border:1px dashed #cbd5e1}
  @media(max-width:1100px){.qb-dashboard{grid-template-columns:repeat(2,minmax(0,1fr))}}
  @media(max-width:700px){.qb-dashboard{grid-template-columns:1fr}}
  .qb-table-wrap{max-height:calc(100vh - 320px);overflow:auto}
  .qb-table{font-size:13px}
  .qb-table th{position:sticky;top:0;z-index:2;background:linear-gradient(135deg,#fff0b3,#ffe487)}
  .qb-table td{vertical-align:top;line-height:1.45}
  .qb-content{max-width:360px;white-space:normal;word-break:break-word}
  .qb-options-cell{max-width:420px}
  .qb-opt{display:block;margin:4px 0;padding:4px 8px;border-radius:8px;background:#fffefa;border:1px solid #eee2c8;font-size:12px}
  .qb-opt.correct{background:#effaf3;border-color:#74c69d;font-weight:700}
  .qb-opt b{color:#7a0b12;margin-right:4px}

.theme-card{background:linear-gradient(135deg,rgba(255,255,255,.98),rgba(255,249,230,.92));border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}
  .theme-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:12px}
  .color-field{display:grid;grid-template-columns:44px 1fr;gap:8px;align-items:center}
  .color-field input[type="color"]{width:44px;height:40px;border:1px solid var(--line);border-radius:12px;background:#fff;padding:3px;cursor:pointer}
  .color-field input[type="text"]{min-width:0}
  .theme-preview{border:1px solid var(--line);border-radius:18px;overflow:hidden;margin-top:14px;background:var(--paper);box-shadow:0 12px 32px rgba(11,47,66,.12)}
  .theme-preview-head{padding:16px 18px;background:linear-gradient(135deg,var(--maroon),var(--maroon-2));color:#fff;display:flex;align-items:center;justify-content:space-between;gap:12px}
  .theme-preview-head b{font-size:18px}.theme-preview-body{padding:15px 18px;display:grid;grid-template-columns:1fr 1fr;gap:12px;background:linear-gradient(135deg,var(--bg),#fff)}
  .theme-chip{border-radius:14px;padding:12px;background:var(--paper);border:1px solid var(--line)}
  .theme-chip strong{color:var(--maroon)}
  .preset-row{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}
  .designer-credit{margin-top:18px;padding:12px;border-radius:14px;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.18);color:#fff3c4;font-size:12px;line-height:1.5;text-align:center;font-weight:700}
  .system-footer{margin-top:24px;text-align:center;color:var(--muted);font-weight:700;font-size:13px;padding:14px;border-top:1px dashed var(--line)}
  .login-designer-credit{position:absolute;left:28px;right:28px;bottom:20px;padding:10px 14px;border-radius:14px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.20);color:#fff7cc;font-size:13px;font-weight:700;text-align:center;backdrop-filter:blur(6px)}
  .hero{position:relative}.login-card{position:relative;overflow:hidden}.login-card:before{content:"";position:absolute;inset:0 0 auto 0;height:5px;background:linear-gradient(90deg,var(--maroon),var(--gold),var(--ink));}
  .login-card .btn.primary{background:linear-gradient(135deg,var(--maroon),var(--maroon-2));box-shadow:0 12px 28px rgba(160,8,21,.24)}
  .login-card .btn.primary:hover{filter:brightness(1.05)}
  .main:after{content:"";position:fixed;right:-160px;bottom:-160px;width:360px;height:360px;background:radial-gradient(circle, color-mix(in srgb, var(--gold) 35%, transparent), transparent 65%);pointer-events:none;z-index:-1}
  @media(max-width:900px){.theme-grid{grid-template-columns:1fr 1fr}.login-designer-credit{position:static;margin-top:22px}.theme-preview-body{grid-template-columns:1fr}}

.user-toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:12px}
  .btn.reset-warn{background:linear-gradient(135deg,#f59e0b,#f97316);color:#281900;border:1px solid #facc15;box-shadow:0 10px 24px rgba(217,119,6,.22)}
  .btn.reset-warn:hover{filter:brightness(1.04)}
  .unit-badge{display:inline-flex;align-items:center;gap:6px;border-radius:999px;background:linear-gradient(135deg,#e8f6ff,#fff8db);border:1px solid var(--line);color:var(--ink);font-weight:800;font-size:12px;padding:6px 10px;white-space:nowrap}
  .unit-badge.missing{background:#fff1f2;border-color:#fecdd3;color:#9f1239}
  .password-badge{display:inline-flex;align-items:center;gap:6px;border-radius:999px;border:1px solid #d9ead3;background:#f0fff4;color:#166534;font-weight:800;font-size:12px;padding:5px 9px;white-space:nowrap}
  .password-badge.reset{border-color:#fed7aa;background:#fff7ed;color:#9a3412}
  .reset-summary{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:12px 0}
  .reset-summary .box{padding:12px;border-radius:14px;background:#fffdf8;border:1px solid var(--line)}
  .reset-summary .box b{display:block;font-size:24px;color:var(--maroon)}
  @media(max-width:900px){.reset-summary{grid-template-columns:1fr}}

.setting-savebar{
    border:1px solid var(--gold);
    background:linear-gradient(135deg,#fffdf5,#fff1b8);
    margin-bottom:16px;
  }
  .setting-savebar .save-title{font-weight:900;color:var(--maroon)}
  .setting-savebar .save-desc{color:var(--muted);font-size:13px;margin-top:4px}

/* Modal overlay (API version) */
.modal-backdrop{
  position:fixed;inset:0;background:rgba(7,24,33,.55);
  display:grid;place-items:center;padding:20px;z-index:1000
}
.modal-dialog{
  position:relative;width:min(640px,100%);max-height:90vh;overflow:auto;
  padding:24px 26px;background:#fff;
  border:1px solid var(--line);border-radius:22px;
  box-shadow:var(--shadow);color:var(--ink)
}
.modal-dialog .section-title h3{color:var(--maroon);font-size:22px}
.modal-dialog label{
  display:block;font-weight:800;color:var(--ink);
  margin:0 0 6px;font-size:14px
}
.modal-dialog .form-grid{margin-top:8px}
.modal-dialog .input,.modal-dialog select,.modal-dialog textarea{
  background:#fff;border-color:#d9cfb8;color:var(--ink)
}
.modal-dialog .notice{background:#fff6dc;border-color:#f3d36b;color:#5c3d00}
.modal-backdrop>.modal{position:static;width:min(900px,100%);max-height:90vh;overflow:auto;padding:20px;box-shadow:var(--shadow)}
.empty{padding:24px;text-align:center;color:var(--muted)}
.section-title{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px}
.section-title h3{margin:0}
.badge.red{background:#fee2e2;color:#991b1b;border-color:#fca5a5}