@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');
:root{
  --p:#2563eb;--p2:#4f46e5;--pl:#eff6ff;--ok:#10b981;--okl:#ecfdf5;--warn:#f59e0b;--warnl:#fffbeb;
  --err:#ef4444;--errl:#fef2f2;--tx:#0f172a;--mut:#64748b;--bd:#e2e8f0;--bg:#f8fafc;--card:#ffffff;
  --r:14px;--sh:0 1px 3px rgba(15,23,42,.06),0 4px 16px rgba(15,23,42,.04);
}
*{box-sizing:border-box}
html,body{margin:0}
body{font-family:'Plus Jakarta Sans',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--tx);background:var(--bg);font-size:13.5px;line-height:1.5}
a{color:var(--p);text-decoration:none}
h1,h2,h3{margin:0 0 .4em;line-height:1.25}
small,.mut{color:var(--mut)}

/* ===== Layout ===== */
.app{display:flex;min-height:100vh}
.sidebar{width:260px;background:#0f172a;color:#cbd5e1;position:fixed;inset:0 auto 0 0;display:flex;flex-direction:column;z-index:50;transition:transform .25s;border-right:1px solid #1e293b}
.brand{display:flex;gap:12px;align-items:center;padding:18px 18px 14px;color:#fff}
.brand b{font-size:16.5px;display:block;letter-spacing:-0.2px}.brand small{color:#94a3b8;font-size:11px}
.logo{width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,#2563eb,#4f46e5);display:grid;place-items:center;color:#fff;font-weight:800;font-size:17px;box-shadow:0 4px 14px rgba(37,99,235,.4);flex:none}

.sidebar-meta{margin:0 14px 8px;padding:8px 10px;background:#1e293b;border-radius:10px;border:1px solid #334155;font-size:11px;line-height:1.45}
.meta-item{display:grid;grid-template-columns:46px 8px 1fr;align-items:start;margin-bottom:5px}
.meta-item:last-child{margin-bottom:0}
.meta-item .lbl{color:#94a3b8;font-weight:600;white-space:nowrap}
.meta-item .sep{color:#64748b;text-align:center}
.meta-item .val{color:#f8fafc;font-weight:700;word-break:break-word}
.meta-item a.val-link{text-decoration:none;color:#f8fafc;display:block}
.meta-item a.val-link:hover .val{color:#60a5fa}

.nav{padding:6px 10px;flex:1;overflow-y:auto}
.nav .sec{font-size:10px;text-transform:uppercase;letter-spacing:.09em;color:#64748b;padding:14px 10px 4px;font-weight:700}
.nav a{display:flex;gap:11px;align-items:center;padding:9px 12px;border-radius:9px;color:#94a3b8;font-weight:500;margin-bottom:2px;transition:.15s;font-size:13px}
.nav a:hover{background:rgba(255,255,255,.05);color:#fff}
.nav a.on{background:linear-gradient(135deg,#2563eb,#4f46e5);color:#fff;font-weight:600;box-shadow:0 4px 12px rgba(37,99,235,.3)}
.nav .ic{width:20px;text-align:center;font-size:15px}

.sb-foot{padding:12px 14px;border-top:1px solid #1e293b;background:#0b1120}
.btn-logout{width:30px;height:30px;border-radius:8px;background:#1e293b;color:#cbd5e1;display:grid;place-items:center;font-size:14px;transition:.15s}
.btn-logout:hover{background:#ef4444;color:#fff}

.main{flex:1;margin-left:260px;min-width:0}
.topbar{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 24px;border-bottom:1px solid var(--bd)}
.topbar-title h1{font-size:18px;margin:0;font-weight:700;color:#0f172a}
.topbar-sub{font-size:11.5px;color:var(--mut)}
.topbar-actions{display:flex;align-items:center;gap:10px}

.badge-info-pill{display:inline-flex;align-items:center;gap:6px;background:#f1f5f9;border:1px solid #e2e8f0;padding:4px 10px;border-radius:20px;font-size:12px;font-weight:600;color:#334155}
.menu-btn{display:none;border:1px solid var(--bd);background:#fff;border-radius:8px;width:36px;height:36px;font-size:16px;cursor:pointer}
.user-chip{display:flex;align-items:center;gap:8px;background:#fff;padding:4px 10px 4px 4px;border-radius:30px;border:1px solid var(--bd);font-weight:600;font-size:12.5px;box-shadow:0 1px 2px rgba(0,0,0,.03)}
.av{width:28px;height:28px;border-radius:50%;background:var(--pl);color:var(--p);display:grid;place-items:center;font-weight:700;font-size:12px}
.content{padding:22px 24px 60px;max-width:1400px}
.overlay{display:none}

/* ===== Components ===== */
.card{background:var(--card);border-radius:var(--r);box-shadow:var(--sh);padding:20px;margin-bottom:18px;border:1px solid #edf0f5}
.card-h{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.card-h h2,.card-h h3{margin:0;font-size:16px;font-weight:700;color:#0f172a}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px;margin-bottom:18px}
.stat{background:#fff;border-radius:var(--r);padding:16px;box-shadow:var(--sh);display:flex;gap:12px;align-items:center;border:1px solid #edf0f5;transition:.2s}
.stat:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(15,23,42,.08)}
.stat .si{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font-size:19px;background:var(--pl);flex:none}
.stat b{font-size:21px;display:block;line-height:1.1;color:#0f172a}.stat span{color:var(--mut);font-size:12px;font-weight:500}
.c1 .si{background:#eff6ff}.c2 .si{background:#ecfdf5}.c3 .si{background:#fffbeb}.c4 .si{background:#fef2f2}.c5 .si{background:#f5f3ff}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid var(--bd);background:#fff;color:var(--tx);padding:8px 14px;border-radius:8px;font:600 13px inherit;font-family:inherit;cursor:pointer;transition:.15s;white-space:nowrap}
.btn:hover{border-color:#cbd5e1;background:#f8fafc}
.btn-p{background:linear-gradient(135deg,#2563eb,#4f46e5);color:#fff;border:0;box-shadow:0 2px 8px rgba(37,99,235,.25)}
.btn-p:hover{background:linear-gradient(135deg,#1d4ed8,#4338ca);color:#fff}
.btn-ok{background:#10b981;color:#fff;border:0;box-shadow:0 2px 8px rgba(16,185,129,.25)}
.btn-ok:hover{background:#059669;color:#fff}
.btn-d{background:var(--errl);color:var(--err);border-color:#fecdd3}
.btn-d:hover{background:#fee2e2;border-color:#fca5a5}
.btn-w{background:var(--warnl);color:#b45309;border-color:#fde68a}
.btn-s{padding:5px 10px;font-size:12px;border-radius:6px}
.btn-block{width:100%;padding:11px}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:flex-end}
.row>*{flex:1 1 160px}.row>.btn,.row>.nf{flex:0 0 auto}

.form label{display:block;font-weight:600;font-size:12px;margin-bottom:12px;color:#334155}
.fi{display:block;width:100%;margin-top:5px;padding:9px 12px;border:1px solid #cbd5e1;border-radius:8px;font:inherit;background:#fff;transition:.15s;color:var(--tx);font-size:13px}
.fi:focus{outline:0;border-color:#2563eb;box-shadow:0 0 0 3px rgba(37,99,235,.15)}
textarea.fi{min-height:80px;resize:vertical}
.chk{display:flex!important;gap:8px;align-items:center;font-weight:500!important}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:0 16px}

.tw{overflow-x:auto;border-radius:10px;border:1px solid var(--bd)}
.tbl{width:100%;border-collapse:collapse;font-size:13px;background:#fff}
.tbl th{background:#f8fafc;text-align:left;font-weight:700;color:#334155;padding:10px 12px;border-bottom:1px solid var(--bd);white-space:nowrap;font-size:11.5px;text-transform:uppercase;letter-spacing:.04em}
.tbl td{padding:9px 12px;border-bottom:1px solid #f1f5f9;vertical-align:middle}
.tbl tr:hover td{background:#f8fafc}
.tbl .num{text-align:center}

.badge{display:inline-block;padding:3px 9px;border-radius:20px;font-size:11px;font-weight:600;background:#f1f5f9;color:#475569;white-space:nowrap}
.b-ok{background:var(--okl);color:#047857;border:1px solid #a7f3d0}.b-p{background:var(--pl);color:#1d4ed8;border:1px solid #bfdbfe}.b-w{background:var(--warnl);color:#b45309;border:1px solid #fde68a}.b-e{background:var(--errl);color:#b91c1c;border:1px solid #fecdd3}
.dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:#cbd5e1;margin-right:5px}.dot.on{background:#10b981;box-shadow:0 0 0 3px rgba(16,185,129,.2)}
.alert{padding:12px 16px;border-radius:10px;margin-bottom:16px;font-weight:500;font-size:13px}
.alert.ok{background:var(--okl);color:#065f46;border:1px solid #a7f3d0}.alert.err{background:var(--errl);color:#991b1b;border:1px solid #fecdd3}

.tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:16px;background:#fff;padding:5px;border-radius:10px;border:1px solid var(--bd);width:fit-content;max-width:100%}
.tabs a{padding:7px 14px;border-radius:7px;font-weight:600;color:var(--mut);font-size:12.5px}
.tabs a.on{background:#eff6ff;color:#2563eb}

.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{border:1px solid var(--bd);border-radius:8px;padding:8px 12px;background:#fff;display:flex;gap:8px;align-items:center;font-size:12.5px}
.kgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(75px,1fr));gap:6px}
.kgrid label{margin:0}

.token-box{font-size:32px;font-weight:800;letter-spacing:.25em;background:linear-gradient(135deg,#2563eb,#4f46e5);-webkit-background-clip:text;background-clip:text;color:transparent;font-family:ui-monospace,Consolas,monospace}
.soal-item{border:1px solid var(--bd);border-radius:12px;padding:14px;margin-bottom:12px;background:#fff}
.soal-item .op{display:flex;flex-direction:column;gap:7px;margin-top:8px;font-size:13px;color:#334155}
.soal-item .op > div{width:100%;box-sizing:border-box}
.soal-item .op .k{color:#047857;font-weight:700}
.empty{text-align:center;padding:40px;color:var(--mut)}
.hi{background:#f0fdf4!important}.lo{color:var(--err);font-weight:700}

/* ===== Login ===== */
.login-body{min-height:100vh;width:100%;display:flex;align-items:center;justify-content:center;padding:24px;box-sizing:border-box;background:radial-gradient(circle at 15% 20%,#e0e7ff 0,transparent 40%),radial-gradient(circle at 85% 80%,#e0e7ff 0,transparent 40%),#f1f5f9;margin:0}
.login-card{width:100%;max-width:420px;background:#fff;border-radius:20px;padding:32px;box-shadow:0 20px 40px rgba(15,23,42,.08);border:1px solid #e2e8f0;margin:auto}
.brand-lg{display:flex;gap:14px;align-items:center;margin-bottom:22px}
.brand-lg .logo{width:48px;height:48px;font-size:22px}.brand-lg h1{font-size:19px;margin:0;font-weight:800}.brand-lg p{margin:2px 0 0;color:var(--mut);font-size:12.5px}
.brand-center{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;margin:0 auto 22px;width:100%}
.brand-center .school-logo{max-height:68px;max-width:180px;height:auto;object-fit:contain;margin:0 auto 10px;display:block}
.brand-center .logo{width:52px;height:52px;font-size:24px;margin:0 auto 10px;border-radius:14px;box-shadow:0 6px 18px rgba(37,99,235,.28);display:grid;place-items:center}
.brand-center h1{font-size:20px;margin:0 0 4px;font-weight:800;color:#0f172a;line-height:1.25;text-align:center;width:100%}
.brand-center .cbt-sub{font-size:13px;font-weight:700;color:#2563eb;margin-bottom:2px;text-align:center}
.brand-center p{margin:0;color:var(--mut);font-size:12px;font-weight:500;text-align:center;width:100%}
.pw-wrapper{position:relative;width:100%;display:block;margin:0;padding:0}
.pw-wrapper .fi{width:100%;padding:10px 44px 10px 14px;margin:0;border:1px solid #cbd5e1;border-radius:8px;box-sizing:border-box;background:#fff;font-size:13px;display:block;height:42px}
.btn-toggle-pw{position:absolute;right:6px;top:50%;transform:translateY(-50%);width:32px;height:32px;padding:0;margin:0;background:transparent;border:none;outline:none;cursor:pointer;display:flex;align-items:center;justify-content:center;color:#64748b;border-radius:6px;transition:.15s;z-index:10}
.btn-toggle-pw:hover{color:#0f172a;background:#f1f5f9}
.seg{display:grid;grid-template-columns:1fr 1fr;background:#f1f5f9;border-radius:10px;padding:4px;margin-bottom:18px}
.seg button{border:0;background:none;padding:9px;border-radius:7px;font:600 13px inherit;font-family:inherit;color:var(--mut);cursor:pointer}
.seg button.on{background:#fff;color:#2563eb;box-shadow:0 1px 3px rgba(0,0,0,.08)}

/* ===== Siswa & Exam ===== */
.s-top{background:linear-gradient(135deg,#1e3a8a,#2563eb);color:#fff;padding:18px 20px 65px}
.s-top .in{max-width:900px;margin:auto;display:flex;align-items:center;gap:12px}
.s-top .logo{background:rgba(255,255,255,.2);box-shadow:none}
.s-wrap{max-width:900px;margin:-45px auto 40px;padding:0 16px}
.ucard{background:#fff;border-radius:14px;padding:18px;box-shadow:var(--sh);margin-bottom:14px;display:flex;gap:14px;align-items:center;flex-wrap:wrap;border:1px solid #e2e8f0}
.ucard .ui{width:48px;height:48px;border-radius:12px;background:var(--pl);display:grid;place-items:center;font-size:22px;flex:none}
.ucard .ub{flex:1;min-width:180px}.ucard h3{margin:0;font-size:15px;color:#0f172a}
.modal{position:fixed;inset:0;background:rgba(15,23,42,.6);display:none;place-items:center;z-index:100;padding:16px;backdrop-filter:blur(3px)}
.modal.show{display:grid}
.modal .box{background:#fff;border-radius:16px;padding:24px;width:100%;max-width:400px}
.score{font-size:72px;font-weight:800;background:linear-gradient(135deg,#2563eb,#4f46e5);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1}

.exam{user-select:none;-webkit-user-select:none;background:#f1f5f9}
.ex-top{position:sticky;top:0;z-index:30;background:#fff;border-bottom:1px solid var(--bd);padding:10px 18px;display:flex;align-items:center;gap:12px}
.ex-top .t{flex:1;min-width:0}.ex-top .t b{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.timer{background:#0f172a;color:#fff;font-weight:700;padding:8px 14px;border-radius:8px;font-family:ui-monospace,Consolas,monospace;font-size:16px}
.timer.low{background:var(--err);animation:pulse 1s infinite}
@keyframes pulse{50%{opacity:.7}}
.ex-body{max-width:1150px;margin:auto;padding:16px;display:grid;grid-template-columns:1fr 290px;gap:16px}
.qcard{background:#fff;border-radius:14px;padding:22px;box-shadow:var(--sh);position:relative;overflow:hidden;border:1px solid #e2e8f0}
.qcard .wm{position:absolute;inset:0;pointer-events:none;opacity:.04;font-size:20px;font-weight:800;transform:rotate(-25deg);display:flex;flex-wrap:wrap;gap:40px;padding:20px;align-content:flex-start}
.qno{display:inline-block;background:var(--pl);color:#2563eb;font-weight:700;padding:4px 10px;border-radius:6px;margin-bottom:14px;font-size:12px}
.qtext{font-size:15px;margin-bottom:18px;line-height:1.7}.qtext img,.opt img{max-width:100%;height:auto}
.opt{display:flex;gap:12px;align-items:flex-start;border:1.5px solid var(--bd);border-radius:10px;padding:11px 13px;margin-bottom:9px;cursor:pointer;transition:.15s;font-size:14px}
.opt:hover{border-color:#93c5fd;background:#f8fafc}
.opt .L{width:30px;height:30px;border-radius:50%;border:2px solid var(--bd);display:grid;place-items:center;font-weight:700;flex:none;color:var(--mut);font-size:13px}
.opt.sel{border-color:#2563eb;background:#eff6ff}.opt.sel .L{background:#2563eb;border-color:#2563eb;color:#fff}
.qnav{display:flex;gap:8px;justify-content:space-between;margin-top:18px;flex-wrap:wrap}
.side{background:#fff;border-radius:14px;padding:16px;box-shadow:var(--sh);align-self:start;position:sticky;top:72px;border:1px solid #e2e8f0}
.ngrid{display:grid;grid-template-columns:repeat(5,1fr);gap:6px;margin:12px 0;max-height:50vh;overflow:auto}
.ngrid button{aspect-ratio:1;border:1.5px solid var(--bd);background:#fff;border-radius:8px;font-weight:700;cursor:pointer;font-family:inherit;color:var(--tx);font-size:12.5px}
.ngrid .ans{background:#10b981;border-color:#10b981;color:#fff}.ngrid .rg{background:#f59e0b;border-color:#f59e0b;color:#fff}
.ngrid .cur{outline:3px solid rgba(37,99,235,.45);outline-offset:1px}
.legend{display:flex;gap:10px;flex-wrap:wrap;font-size:11px;color:var(--mut)}.legend i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:4px;vertical-align:-1px}
.toast{position:fixed;bottom:18px;left:50%;transform:translateX(-50%);background:#0f172a;color:#fff;padding:9px 16px;border-radius:8px;font-size:12.5px;z-index:200;opacity:0;transition:.3s;pointer-events:none}
.toast.show{opacity:1}

@media (max-width:900px){
  .sidebar{transform:translateX(-100%)}.sidebar.open{transform:none}
  .overlay.show{display:block;position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:45}
  .main{margin-left:0}.menu-btn{display:block}
  .topbar{padding:10px 14px}.content{padding:14px 12px 50px}
  .grid2,.grid3{grid-template-columns:1fr}
  .user-chip span{display:none}
  .ex-body{grid-template-columns:1fr;padding:10px}
  .side{position:static}.ngrid{grid-template-columns:repeat(8,1fr)}
  .qcard{padding:16px}
}
/* Styling KaTeX & Simbol Matematika */
.katex { font-size: 1.08em; line-height: 1.2; }
.katex-display { margin: 0.6em 0; overflow-x: auto; overflow-y: hidden; }
.tbl-soal { width: 100%; max-width: 540px; margin: 8px 0; border-collapse: collapse; font-size: 13px; background: #fff; }
.tbl-soal th, .tbl-soal td { border: 1px solid #cbd5e1; padding: 6px 10px; }
.tbl-soal th { background: #f1f5f9; font-weight: 700; color: #1e293b; text-align: center; }

@media print{.sidebar,.topbar,.no-print{display:none!important}.main{margin:0}.card{box-shadow:none;border:0}}