/* Layout: one reading column under a sticky tab bar; a safety-sign hazard stripe is the only loud element. */
@font-face{font-family:"Inter";src:url("/static/fonts/inter-latin-opsz-normal.woff2") format("woff2");font-weight:100 900;font-style:normal;font-display:swap}
:root{
  --bg:#f6f7f9; --surface:#ffffff; --ink:#15202e; --muted:#566273; --line:#d9dee6;
  --navy:#1c3d6e; --sign:#f2b705; --sign-ink:#15202e;
  --good:#1f7a4d; --bad:#b3261e;
  --good-bg:#e6f4ec; --bad-bg:#fbeaea; --tint:#eef2f7;
  --f-body:"Inter","Segoe UI",system-ui,sans-serif;
  --f-mono:ui-monospace,"Cascadia Mono",Consolas,monospace;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#0f151d; --surface:#17202b; --ink:#e7ecf2; --muted:#9aa7b7; --line:#2b3746;
  --navy:#8fb4e3; --good:#5fc28f; --bad:#f08a82;
  --good-bg:#16302a; --bad-bg:#3a1d1d; --tint:#1c2733; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0f151d; --surface:#17202b; --ink:#e7ecf2; --muted:#9aa7b7; --line:#2b3746;
  --navy:#8fb4e3; --good:#5fc28f; --bad:#f08a82;
  --good-bg:#16302a; --bad-bg:#3a1d1d; --tint:#1c2733; color-scheme:dark}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:17px;line-height:1.55;font-feature-settings:"cv11"}
.wrap{max-width:46rem;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
h1,h2,h3{font-weight:750;line-height:1.15;text-wrap:balance;letter-spacing:-.015em}
h1{font-size:2.3rem;margin:0}
h2{font-size:1.55rem;margin:2.2rem 0 .6rem}
h3{font-size:1.15rem;margin:1.6rem 0 .4rem}
p{margin:.5rem 0}
a{color:var(--navy)}
.muted{color:var(--muted)}
.label{font-weight:650;text-transform:uppercase;letter-spacing:.08em;font-size:.75rem;color:var(--muted)}

.top{background:var(--surface);border-bottom:1px solid var(--line)}
.stripe{height:10px;background:repeating-linear-gradient(-45deg,var(--sign) 0 14px,var(--sign-ink) 14px 28px)}
.top .wrap{padding-block:1.4rem 1.1rem;display:flex;gap:1rem;align-items:flex-end;justify-content:space-between;flex-wrap:wrap}
.top p{margin:.35rem 0 0;color:var(--muted)}
.top form{margin:0}
nav{position:sticky;top:0;z-index:5;background:var(--surface);border-bottom:1px solid var(--line)}
nav .wrap{display:flex;gap:.25rem;overflow-x:auto}
nav button{font:650 .8rem var(--f-body);text-transform:uppercase;letter-spacing:.07em;background:none;border:0;border-bottom:3px solid transparent;color:var(--muted);padding:.85rem .7rem .7rem;cursor:pointer;white-space:nowrap}
nav button[aria-selected="true"]{color:var(--ink);border-bottom-color:var(--sign)}
:focus-visible{outline:3px solid var(--navy);outline-offset:2px}
main .wrap{padding-block:.5rem 4rem}

.tbl{overflow-x:auto;margin:.8rem 0}
table{border-collapse:collapse;width:100%;font-size:.95rem}
th,td{text-align:left;vertical-align:top;padding:.5rem .6rem;border-bottom:1px solid var(--line)}
th{font-weight:650;text-transform:uppercase;letter-spacing:.06em;font-size:.72rem;color:var(--muted)}
td.num{font-variant-numeric:tabular-nums;white-space:nowrap}

.sign{background:var(--sign);color:var(--sign-ink);padding:1rem 1.1rem;margin:1.2rem 0;border-radius:4px}
.sign strong{font-size:1.1rem;display:block;text-transform:uppercase;letter-spacing:.04em}
.sign p{margin:.3rem 0 0}
.note{border-left:4px solid var(--navy);background:var(--tint);padding:.7rem .9rem;margin:1rem 0}
.rule{border-left:4px solid var(--bad);background:var(--bad-bg);padding:.7rem .9rem;margin:1rem 0}

.bar{display:flex;height:2.4rem;border-radius:4px;overflow:hidden;margin:.6rem 0 .3rem;font:650 .8rem var(--f-body);text-transform:uppercase;letter-spacing:.05em}
.bar span{display:flex;align-items:center;justify-content:center;color:#fff;min-width:0;overflow:hidden;white-space:nowrap}
.b3{background:#1c3d6e;flex:12}.b4{background:#3c6595;flex:6}.b1{background:#6b8db8;flex:3}.b2{background:#8fa9c9;flex:3;color:#15202e!important}

.week{display:grid;grid-template-columns:auto 1fr;gap:.2rem .8rem;padding:.8rem 0;border-bottom:1px solid var(--line)}
.week input{width:1.3rem;height:1.3rem;margin-top:.25rem;accent-color:var(--good)}
.week .wk{font-weight:750;text-transform:uppercase;letter-spacing:.04em;font-size:.95rem}
.week .out{color:var(--muted);font-size:.95rem}
.week.done .wk{color:var(--good)}
.progress{font-family:var(--f-mono);font-size:.9rem;color:var(--muted)}

.quiz{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:1rem;margin:1rem 0}
.quiz .q{font-size:1.1rem;font-weight:600;min-height:3.2em}
.choices{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:.6rem}
.btn{font:650 .85rem var(--f-body);text-transform:uppercase;letter-spacing:.05em;padding:.6rem .95rem;border-radius:4px;border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer}
.btn:hover{border-color:var(--navy)}
.btn.primary{background:var(--navy);border-color:var(--navy);color:var(--surface)}
.btn.signbtn{background:var(--sign);border-color:var(--sign);color:var(--sign-ink)}
.btn.right{background:var(--good-bg);border-color:var(--good);color:var(--good)}
.btn.wrong{background:var(--bad-bg);border-color:var(--bad);color:var(--bad)}
.btn.quiet{border-color:transparent;color:var(--muted);text-transform:none;letter-spacing:0;font-weight:500}
.btn:disabled{opacity:.5;cursor:default}
.qfeed{margin-top:.6rem;min-height:1.5em}
.score{font-family:var(--f-mono)}

.timerbar{position:sticky;top:2.9rem;z-index:4;background:var(--bg);display:flex;flex-wrap:wrap;align-items:center;gap:.6rem;padding:.6rem 0;border-bottom:1px solid var(--line)}
.clock{font:500 1.5rem var(--f-mono);font-variant-numeric:tabular-nums;min-width:5.5ch}
.clock.low{color:var(--bad)}
.saved{font-size:.85rem;color:var(--muted);margin-left:auto}
.scenario{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:.4rem 1.1rem 1rem}
.task{margin:1.6rem 0}
.task .head{display:flex;justify-content:space-between;gap:1rem;align-items:baseline;flex-wrap:wrap}
.task .head h3{margin:0}
.el{font-size:.85rem;color:var(--muted);white-space:nowrap}
.part{margin:.9rem 0}
.part p{margin:.2rem 0 .4rem}
.cw{font-weight:750;color:var(--navy)}
textarea{width:100%;min-height:9rem;font:inherit;font-size:1rem;line-height:1.5;padding:.6rem .7rem;border:1px solid var(--line);border-radius:4px;background:var(--surface);color:var(--ink);resize:vertical}
input[type=text],input[type=password]{font:inherit;padding:.55rem .7rem;border:1px solid var(--line);border-radius:4px;background:var(--surface);color:var(--ink);max-width:100%}
.wc{font-size:.8rem;color:var(--muted);text-align:right;font-variant-numeric:tabular-nums}
.actions{display:flex;flex-wrap:wrap;gap:.6rem;align-items:center;margin:1.4rem 0}
.status{font-size:.95rem}
.status.ok{color:var(--good)} .status.err{color:var(--bad)}

.locked{border:2px dashed var(--line);border-radius:6px;padding:1.2rem;text-align:center;color:var(--muted)}
.mk{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:.3rem 1.1rem 1rem;margin:1rem 0}
.mk ul{padding-left:1.2rem;margin:.4rem 0}
.mk li{margin:.25rem 0}

.result{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:1rem 1.1rem;margin:1rem 0}
.result .total{font-size:2.4rem;font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.band{display:inline-block;padding:.2rem .6rem;border-radius:3px;font-weight:650;font-size:.78rem;text-transform:uppercase;letter-spacing:.06em}
.band.p{background:var(--good-bg);color:var(--good)} .band.f{background:var(--bad-bg);color:var(--bad)}
.rpart{border-top:1px solid var(--line);padding:.8rem 0}
.rpart .rh{display:flex;justify-content:space-between;gap:1rem;font-weight:700}
.rpart .rm{font-family:var(--f-mono);font-variant-numeric:tabular-nums;white-space:nowrap}
.meter{height:6px;background:var(--tint);border-radius:3px;overflow:hidden;margin:.35rem 0 .5rem}
.meter i{display:block;height:100%;background:var(--navy)}
.rpart ul{margin:.2rem 0;padding-left:1.2rem}
.ok-li{color:var(--good)} .miss-li{color:var(--muted)}
.spin{display:inline-block;width:.9rem;height:.9rem;border:2px solid var(--line);border-top-color:var(--navy);border-radius:50%;vertical-align:-2px;margin-right:.4rem}
@media (prefers-reduced-motion:no-preference){.spin{animation:sp 1s linear infinite} nav button{transition:color .15s,border-color .15s}}
@keyframes sp{to{transform:rotate(360deg)}}
.hist{list-style:none;padding:0;margin:.4rem 0}
.hist li{display:flex;justify-content:space-between;gap:1rem;padding:.45rem 0;border-bottom:1px solid var(--line);font-size:.95rem}
.hist button{background:none;border:0;padding:0;color:var(--navy);font:inherit;cursor:pointer;text-decoration:underline}

.login{min-height:100vh;display:flex;flex-direction:column}
.login main{flex:1;display:flex;align-items:flex-start}
.login form{display:flex;flex-direction:column;gap:.6rem;max-width:22rem;margin-top:1.5rem}
.err{color:var(--bad);min-height:1.5em}