:root{
  --bg:#060a18; --bg2:#0d1430; --panel:#121b3d; --panel2:#18234d; --line:#2a3768;
  --text:#eef2ff; --muted:#a9b4d6; --sun:#ffb020; --sun2:#ff7a1a; --teal:#3fd9c4;
  --blue:#6aa8ff; --good:#4fdc7c; --warn:#ffd23f; --bad:#ff5a5f; --pink:#ff8ad8;
  --radius:0; --shadow:none;
  --head:"Press Start 2P","Courier New",monospace;
  --body:"VT323","Segoe UI",system-ui,sans-serif;
}
*{box-sizing:border-box}
html{background:var(--bg)}
body{background:transparent} /* must stay transparent: an opaque body would paint over the z-index:-2 sky */
html,body{margin:0;min-height:100%;color:var(--text);font-family:var(--body);font-size:22px;line-height:1.35;letter-spacing:.02em}
body{overflow-x:hidden}
/* ---------- BACKGROUND ---------- */
#sky{
  position:fixed;
  inset:0;
  z-index:-2;            /* layer 1 (back): sky */
  pointer-events:none;
  /* New background handling – keeps the image's aspect ratio
     and crops it if necessary, rather than stretching it. */
  background:url('assets/sky.png') center/cover no-repeat;
}
/* #app deliberately has NO z-index, so it does not form its own stacking context.
   That lets the moonscape (z-index:-1) sit above the sky (-2) but below all page content. */
#app{position:relative;z-index:auto;min-height:100vh;display:flex;flex-direction:column}
main#screen{flex:1;width:100%;max-width:1100px;margin:0 auto;padding:20px 18px 60px}
h1,h2,h3{font-family:var(--head);font-weight:600;line-height:1.15;margin:0 0 .4em}
h1:focus,h2:focus{outline:none}
p{margin:.4em 0 .8em}
a{color:var(--teal)}
button{font:inherit;color:inherit}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5em;border:3px solid var(--line);background:var(--panel2);
  color:var(--text);padding:.7em 1.2em;border-radius:0;cursor:pointer;font-family:var(--head);font-weight:600;font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;
  transition:transform .12s, background .2s, border-color .2s, box-shadow .12s; text-decoration:none; box-shadow:5px 5px 0 rgba(0,0,0,.35)}
.btn:hover{transform:translate(-2px,-2px);border-color:var(--blue);box-shadow:7px 7px 0 rgba(0,0,0,.45)}
.btn:active{transform:translate(2px,2px);box-shadow:2px 2px 0 rgba(0,0,0,.35)}
.btn:focus-visible,.choice:focus-visible,.item:focus-visible,.term:focus-visible,.storm-card:focus-visible{outline:3px solid var(--warn);outline-offset:3px}
.btn.primary{background:var(--sun);border-color:#533b10;color:#1a1200}
.btn.primary:hover{border-color:#533b10}
.btn.big{font-size:.9rem;padding:.88em 1.4em}
.btn.danger{background:var(--bad);border-color:#5a1216;color:#fff}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin:18px 0}
.panel{background:linear-gradient(180deg,var(--panel),var(--bg2));border:2px solid var(--line);border-radius:0;padding:20px;box-shadow:var(--shadow)}
.muted{color:var(--muted)}
.small{font-size:.85rem}
.center{text-align:center}
.pill{display:inline-block;padding:.2em .8em;border-radius:999px;background:var(--panel2);border:1px solid var(--line);font-family:var(--head);font-size:.9rem}
.tag-training{background:#183f2d;border-color:#2c7a50;color:#a9f5c6}
.tag-mission{background:#4a3410;border-color:#a1700f;color:#ffe2a3}
.tag-extreme{background:#4a1418;border-color:#b0282f;color:#ffb8bb}
.tag-live{background:#11384a;border-color:#1f87ad;color:#a7e8ff}
.term{background:none;border:none;border-bottom:2px dotted var(--teal);color:var(--teal);padding:0;cursor:help;font-weight:800}
.fade-in{animation:fadeIn .45s ease both}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
#mode-fader{position:fixed;inset:0;z-index:40;background:#000;opacity:0;pointer-events:none;transition:opacity .48s ease}
#mode-fader.on{opacity:1;pointer-events:auto}

/* ---------- HUD ---------- */
#hud{position:sticky;top:0;z-index:5;background:rgba(6,10,24,.88);backdrop-filter:blur(8px);border-bottom:2px solid var(--line)}
#hud .inner{max-width:1100px;margin:0 auto;padding:8px 18px;display:flex;gap:14px;align-items:center;flex-wrap:wrap}
.meter{flex:1 1 150px;min-width:140px}
.meter .lbl{display:flex;justify-content:space-between;font-family:var(--head);font-size:.92rem}
.bar{height:12px;border-radius:99px;background:#0a1028;border:1px solid var(--line);overflow:hidden}
.bar > i{display:block;height:100%;border-radius:99px;transition:width .6s ease, background .6s}
.hud-stars{font-size:1.1rem;letter-spacing:2px;white-space:nowrap}
.icon-btn{background:var(--panel2);border:2px solid var(--line);border-radius:12px;width:42px;height:42px;cursor:pointer;font-size:1.15rem;display:grid;place-items:center;padding:0;color:var(--text)}
.icon-btn svg{display:block;width:18px;height:18px;stroke:currentColor;fill:none}
#sound-toggle{position:fixed;right:14px;bottom:14px;z-index:6}
#home-btn{position:fixed;right:64px;bottom:14px;z-index:6}
#home-btn[hidden]{display:none}
#hud[hidden]{display:none}

/* ---------- title ---------- */
.title-screen{text-align:center;padding-top:calc(100vh * 0.08)}
.badge{display:inline-block;font-family:var(--head);font-size:.7rem;letter-spacing:.08em;padding:.5em 1em;border-radius:0;border:3px solid var(--line);background:rgba(18,27,61,.7);color:var(--muted);text-transform:uppercase;margin-top:-8px}
body.mode-senior .badge{font-family:var(--head);font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;margin-top:-8px}
.logo{font-size:clamp(2.7rem,10vw,6rem);letter-spacing:.04em;margin:.25em 0 0;font-weight:700;display:block;transform:rotate(-9deg) skew(-10deg) translate(-18px, -8px);
  color:var(--sun);text-shadow:4px 4px 0 rgba(0,0,0,.5);filter:none}
.logo span{display:block;font-size:.53em;letter-spacing:.24em;color:var(--teal);margin-top:.15em;transform:translate(42px, -4px)}
.tag{font-family:var(--head);font-size:1rem;color:var(--teal);margin-top:12px;letter-spacing:.08em;text-transform:uppercase}
.lede{max-width:620px;margin:10px auto;font-size:1.1rem}
.moonscape{position:fixed;left:0;right:0;bottom:0;width:100%;height:22vh;z-index:-1;pointer-events:none;display:block} /* layer 2: moon surface, above sky, below content */
.credit{margin-top:4vh;color:var(--muted);font-size:.85rem}

/* ---------- intro ---------- */
.intro-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;margin:16px 0}
.crew-card{display:flex;gap:12px;align-items:center}
.crew-card b{font-family:var(--head);font-weight:600}
.howto{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}
.howto .step{background:var(--panel2);border:1px solid var(--line);border-radius:0;padding:14px}
.howto .num{font-family:var(--head);font-size:1.6rem;color:var(--sun)}

/* ---------- storm select ---------- */
.storm-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:16px;margin-top:14px}
.storm-card{text-align:left;cursor:pointer;background:linear-gradient(180deg,var(--panel),var(--bg2));border:2px solid var(--line);border-radius:0;
  padding:18px;box-shadow:var(--shadow);transition:transform .15s,border-color .2s;display:flex;flex-direction:column;gap:8px}
.storm-card:hover{transform:translateY(-4px);border-color:var(--sun)}
.storm-card h3{font-size:1.35rem;margin:0}
.storm-card .stats{display:flex;flex-wrap:wrap;gap:6px}
.chip{font-size:.8rem;padding:.15em .6em;border-radius:999px;background:#0a1028;border:1px solid var(--line);color:var(--muted);white-space:nowrap}
.best{font-size:.85rem;color:var(--warn)}

/* ---------- alert ---------- */
.alert-screen{text-align:center}
.siren{display:inline-block;font-family:var(--head);font-size:clamp(1.6rem,5vw,2.6rem);color:#fff;background:var(--bad);padding:.2em .8em;border-radius:14px;
  animation:siren 1s infinite alternate;box-shadow:0 0 40px rgba(255,90,95,.6)}
@keyframes siren{from{background:#c9262c}to{background:#ff5a5f}}
.sunburst{width:150px;height:150px;margin:18px auto 6px;border-radius:50%;background:radial-gradient(circle,#fff6c8 0%,var(--sun) 40%,var(--sun2) 62%,rgba(255,122,26,0) 72%);
  animation:pulse 1.6s ease-in-out infinite}
@keyframes pulse{50%{transform:scale(1.08);filter:brightness(1.25)}}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;margin:16px 0;text-align:left}
.fact{background:var(--panel2);border:1px solid var(--line);border-radius:14px;padding:12px 14px}
.fact .k{font-size:.8rem;color:var(--muted);font-family:var(--head);letter-spacing:.04em;text-transform:uppercase}
.fact .v{font-family:var(--head);font-size:1.25rem}
.fact .x{font-size:.85rem;color:var(--muted)}

/* ---------- mission control ---------- */
.mc{display:flex;gap:12px;align-items:flex-start;background:#081a24;border:2px solid #1d5b6e;border-radius:0;padding:12px 14px;margin:12px 0;text-align:left;min-height:64px}
.mc .ant{font-size:1.6rem;line-height:1}
.mc .who{font-family:var(--head);color:var(--teal);font-size:.9rem}
.mc .sig{height:6px;background:#0a2a36;border-radius:9px;overflow:hidden;margin-top:6px;width:220px;max-width:100%}
.mc .sig i{display:block;height:100%;width:0;background:var(--teal)}
.mc .txt{min-height:1.4em}
.mc.off{background:#1a1220;border-color:#4d2a4d}
.mc.off .who{color:var(--pink)}

/* ---------- scramble ---------- */
.scr-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.timer{position:relative;width:96px;height:96px;flex:none}
.timer svg{transform:rotate(-90deg)}
.timer .t{position:absolute;inset:0;display:grid;place-items:center;font-family:var(--head);font-size:1.9rem}
.timer.low .t{color:var(--bad);animation:siren .5s infinite alternate}
.scr-grid{display:grid;grid-template-columns:1.6fr 1fr;gap:18px;margin-top:12px}
@media (max-width:820px){.scr-grid{grid-template-columns:1fr}}
.items{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.item{position:relative;text-align:left;cursor:pointer;background:var(--panel2);border:2px solid var(--line);border-radius:14px;padding:10px 12px;transition:transform .12s,border-color .15s,opacity .2s}
.item:hover{transform:translateY(-2px);border-color:var(--blue)}
.item .ic{font-size:2rem;line-height:1}
.item .nm{font-family:var(--head);font-weight:600;display:block;margin-top:4px}
.item .ds{font-size:.8rem;color:var(--muted);display:block}
.item .sh{font-size:.78rem;color:var(--teal);display:block;margin-top:4px}
.item[aria-pressed="true"]{opacity:.35;border-style:dashed}
.item[aria-pressed="true"]::after{content:"IN BAG";position:absolute;top:8px;right:10px;font-family:var(--head);font-size:.72rem;color:var(--good)}
.bag{display:flex;flex-direction:column;gap:10px}
.slots{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.slot{height:70px;border-radius:12px;border:2px dashed var(--line);display:grid;place-items:center;font-size:1.8rem;background:#0a1028;cursor:default}
.slot.full{border-style:solid;border-color:var(--good);cursor:pointer;background:#10261d}
.bagstat{display:flex;justify-content:space-between;font-size:.92rem}

/* ---------- shelter / days ---------- */
.day-head{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px;margin-bottom:8px}
.scene{width:100%;height:auto;display:block;border-radius:16px;border:2px solid var(--line);background:#0a1028}
.crewrow{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:10px 0}
@media (max-width:600px){.crewrow{grid-template-columns:repeat(2,1fr)}}
.crewbox{background:var(--panel2);border:1px solid var(--line);border-radius:14px;padding:8px;display:flex;gap:8px;align-items:center}
.crewbox .nm{font-family:var(--head);font-size:.92rem;line-height:1.1}
.crewbox .rl{font-size:.72rem;color:var(--muted)}
.dose{font-size:.78rem;font-weight:800;margin-top:2px}
.band-low{color:var(--good)} .band-mid{color:var(--warn)} .band-high{color:var(--sun2)} .band-crit{color:var(--bad)} .band-unk{color:var(--muted)}
.ring-low{stroke:var(--good)} .ring-mid{stroke:var(--warn)} .ring-high{stroke:var(--sun2)} .ring-crit{stroke:var(--bad)} .ring-unk{stroke:#56608a}
.story{font-size:1.08rem;max-width:820px}
.choices{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px;margin-top:12px}
.choice{text-align:left;cursor:pointer;background:linear-gradient(180deg,var(--panel2),var(--panel));border:2px solid var(--line);border-radius:0;padding:14px 16px;display:flex;flex-direction:column;gap:6px;transition:transform .12s,border-color .15s}
.choice:hover:not([disabled]){transform:translateY(-3px);border-color:var(--sun)}
.choice .ct{font-family:var(--head);font-size:1.15rem;font-weight:600}
.choice .cx{font-size:.95rem;color:#d4dbf3}
.choice .chips{display:flex;flex-wrap:wrap;gap:6px}
.choice .chip.plus{color:#a9f5c6;border-color:#2c7a50}
.choice .chip.minus{color:#ffc2a3;border-color:#8a4a2a}
.choice[disabled]{opacity:.45;cursor:not-allowed}
.choice .why{font-size:.82rem;color:var(--pink)}
.letter{display:inline-grid;place-items:center;width:1.6em;height:1.6em;border-radius:50%;background:var(--sun);color:#2a1400;font-size:.85em;margin-right:.35em}

/* ---------- results ---------- */
.results{display:flex;flex-direction:column;gap:10px}
.res-line{background:var(--panel2);border-left:5px solid var(--blue);border-radius:10px;padding:10px 14px}
.res-line.good{border-color:var(--good)} .res-line.bad{border-color:var(--bad)} .res-line.warn{border-color:var(--warn)}
.deltas{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}
.delta{font-family:var(--head);padding:.3em .8em;border-radius:999px;background:#0a1028;border:1px solid var(--line)}
.delta.up{color:var(--good)} .delta.down{color:var(--bad)}
.interlude{max-width:720px;margin:6vh auto 0;text-align:center}
.interlude .big-ic{font-size:4rem}

/* ---------- ending ---------- */
.rank{width:170px;height:170px;margin:10px auto;border-radius:50%;display:grid;place-items:center;font-size:4.2rem;
  background:radial-gradient(circle at 35% 30%,#fff7d0,var(--sun) 50%,#b45f06);box-shadow:0 0 0 8px #3a2a08,0 0 60px rgba(255,176,32,.55);animation:pop .7s cubic-bezier(.2,1.6,.4,1) both}
.rank.silver{background:radial-gradient(circle at 35% 30%,#fff,#c9d3ea 50%,#6f7ca3);box-shadow:0 0 0 8px #2b3352,0 0 50px rgba(200,215,255,.4)}
.rank.bronze{background:radial-gradient(circle at 35% 30%,#ffe2c4,#d58a4a 50%,#7a4517);box-shadow:0 0 0 8px #3a2210,0 0 40px rgba(213,138,74,.4)}
.rank.blue{background:radial-gradient(circle at 35% 30%,#e3f0ff,#6aa8ff 50%,#264a8a);box-shadow:0 0 0 8px #142a52,0 0 40px rgba(106,168,255,.4)}
@keyframes pop{from{transform:scale(.2);opacity:0}to{transform:none;opacity:1}}
.stars{font-size:2.4rem;letter-spacing:6px}
.star-off{filter:grayscale(1);opacity:.25}
.debrief-list{display:flex;flex-direction:column;gap:12px}
.db-item{display:grid;grid-template-columns:1fr 1fr;gap:12px;background:var(--panel2);border:1px solid var(--line);border-radius:14px;padding:14px}
@media (max-width:700px){.db-item{grid-template-columns:1fr}}
.db-item h4{margin:0 0 4px;font-family:var(--head);font-weight:600;color:var(--sun)}
.db-item .real h4{color:var(--teal)}
table.map{width:100%;border-collapse:collapse;font-size:.92rem}
table.map th,table.map td{border-bottom:1px solid var(--line);padding:8px;text-align:left;vertical-align:top}
table.map th{font-family:var(--head);font-weight:600;color:var(--sun)}
.src-list li{margin-bottom:6px}

/* ---------- modal ---------- */
#modal{position:fixed;inset:0;z-index:20;background:rgba(3,6,16,.75);display:grid;place-items:center;padding:16px}
#modal[hidden]{display:none}
#modal .box{max-width:560px;width:100%;max-height:85vh;overflow:auto}
.gl dt{font-family:var(--head);font-weight:600;color:var(--sun);margin-top:10px}
.gl dd{margin:2px 0 0}


/* =================== FLIGHT DIRECTOR (13+) THEME =================== */
body.mode-senior{--bg:#04070c;--bg2:#08101a;--panel:#0b1622;--panel2:#0f1d2c;--line:#1d3348;--text:#e3eefb;--muted:#86a0bb;
  --sun:#ffb020;--sun2:#ff6a00;--teal:#22d3ee;--blue:#38bdf8;--good:#34d399;--warn:#fbbf24;--bad:#f43f5e;--radius:0;
  --head:"Press Start 2P","Courier New",monospace;--body:"VT323","Inter",system-ui,sans-serif;font-size:18px}
body.mode-senior #app{background-image:none}
body.mode-senior main#screen{max-width:1200px}
body.mode-senior .btn{border-radius:0;text-transform:uppercase;letter-spacing:.08em;font-size:.72rem;border-width:3px;box-shadow:5px 5px 0 rgba(0,0,0,.35)}
body.mode-senior .btn.primary{background:var(--teal);color:#021018;border-color:#0b3d4d}
body.mode-senior .btn.big{font-size:.82rem}
body.mode-senior .panel,body.mode-senior .storm-card,body.mode-senior .choice,body.mode-senior .item,body.mode-senior .crewbox,body.mode-senior .fact,body.mode-senior .mc{border-width:2px;box-shadow:none;border-radius:0}
body.mode-senior .logo{font-family:var(--head);letter-spacing:.03em;color:var(--teal);text-shadow:4px 4px 0 rgba(0,0,0,.5)}
body.mode-senior .logo span{font-size:.38em;letter-spacing:.35em;color:var(--sun)}
body.mode-senior .tag{font-family:var(--head);font-size:.9rem;letter-spacing:.16em;text-transform:uppercase}
body.mode-senior .pill,body.mode-senior .chip,body.mode-senior .fact .k,body.mode-senior .meter .lbl,body.mode-senior .delta,body.mode-senior .dose,body.mode-senior .badge,body.mode-senior .mono{font-family:"JetBrains Mono",monospace}
body.mode-senior .pill{border-radius:0;font-size:.72rem;letter-spacing:.04em}
body.mode-senior .letter{border-radius:0;background:var(--teal);color:#021018}
body.mode-senior .siren{border-radius:0;font-family:"JetBrains Mono",monospace;letter-spacing:.1em}
body.mode-senior .rank{border-radius:0;transform:rotate(45deg)}
body.mode-senior .rank > *{transform:rotate(-45deg)}
body.mode-senior h1,body.mode-senior h2{letter-spacing:-.01em}
.mono{font-family:"JetBrains Mono",ui-monospace,monospace}

/* mode switch */
.mode-switch{display:inline-flex;gap:6px;padding:6px;border-radius:0;background:rgba(10,16,40,.75);border:3px solid var(--line);margin:14px auto 4px;box-shadow:5px 5px 0 rgba(0,0,0,.35)}
.mode-switch button{border:none;background:var(--panel2);cursor:pointer;padding:.9em 1.1em;border-radius:0;font-family:var(--head);font-weight:600;color:var(--muted);line-height:1.15;text-transform:uppercase;letter-spacing:.06em;border:3px solid transparent}
.mode-switch button small{display:block;font-family:var(--body);font-weight:700;font-size:.72rem;opacity:.8;letter-spacing:.02em}
.mode-switch button[aria-checked="true"]{background:var(--sun);color:#2a1400;border-color:#533b10}
.mode-switch button:disabled{cursor:default}
body.mode-senior .mode-switch{border-radius:0;border-width:3px}
body.mode-senior .mode-switch button{border-radius:0;background:var(--panel2);border-color:transparent}
body.mode-senior .mode-switch button[aria-checked="true"]{background:var(--teal);color:#021018;border-color:#084a58}

/* engineering panels (Flight Director) */
.eng{display:flex;flex-direction:column;gap:10px}
.eng input[type=range]{width:100%;accent-color:var(--teal);height:28px}
.eng .proj{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:8px}
.eng .proj div{background:#06101a;border:1px solid var(--line);border-radius:6px;padding:8px 10px}
.eng .proj b{display:block;font-family:"JetBrains Mono",monospace;font-size:1.15rem}
.sys{display:flex;align-items:center;gap:10px;background:#06101a;border:1px solid var(--line);border-radius:6px;padding:8px 10px;cursor:pointer}
.sys input{width:20px;height:20px;accent-color:var(--teal)}
.sys .w{margin-left:auto;font-family:"JetBrains Mono",monospace;color:var(--muted)}
.ok{color:var(--good)} .no{color:var(--bad)} .meh{color:var(--warn)}
.cart{height:16px;border-radius:5px;background:#06101a;border:1px solid var(--line);overflow:hidden}
.cart i{display:block;height:100%;background:var(--teal);transition:width .3s}
.cart.full i{background:var(--bad)}
.bagicons{display:flex;flex-wrap:wrap;gap:6px;min-height:52px;padding:6px;border:1px dashed var(--line);border-radius:8px}
.bagicons button{font-size:1.6rem;background:#10261d;border:1px solid var(--good);border-radius:8px;width:48px;height:44px;cursor:pointer}
.telemetry{width:100%;border-collapse:collapse;font-family:"JetBrains Mono",monospace;font-size:.82rem;margin:10px 0;text-align:left}
.telemetry td{border-bottom:1px solid var(--line);padding:6px 8px}
.telemetry td:first-child{color:var(--muted)}
.chart{width:100%;height:auto;background:#06101a;border:1px solid var(--line);border-radius:12px}

/* =================== SPACE ACADEMY =================== */
.ac-top{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;margin-bottom:10px}
.points{font-family:var(--head);font-weight:600;padding:.35em .9em;border-radius:999px;background:var(--panel2);border:2px solid var(--line)}
.crumbs{font-size:.88rem;color:var(--muted)} .crumbs button{background:none;border:none;color:var(--teal);cursor:pointer;padding:0;font:inherit}
.ac-hero{display:grid;grid-template-columns:1.4fr 1fr;gap:18px;align-items:center}
@media (max-width:760px){.ac-hero{grid-template-columns:1fr}}
.progressbar{height:14px;border-radius:99px;background:#0a1028;border:1px solid var(--line);overflow:hidden}
.progressbar i{display:block;height:100%;background:linear-gradient(90deg,var(--teal),var(--good));transition:width .6s}
.units{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;margin-top:16px}
.unit h3{margin-bottom:2px}
.lesson-row{display:flex;align-items:center;gap:10px;width:100%;text-align:left;background:var(--panel2);border:1px solid var(--line);border-radius:12px;padding:10px 12px;margin-top:8px;cursor:pointer}
.lesson-row:hover{border-color:var(--teal)}
.status{width:26px;height:26px;flex:none;border-radius:50%;border:3px solid #3a4775;display:grid;place-items:center;font-size:.8rem;font-weight:800}
.status.read{border-color:var(--teal);background:linear-gradient(90deg,var(--teal) 50%,transparent 50%)}
.status.mastered{border-color:var(--good);background:var(--good);color:#04210f}
body.mode-senior .status{border-radius:5px}
.lesson-layout{display:grid;grid-template-columns:260px 1fr;gap:18px;align-items:start}
@media (max-width:860px){.lesson-layout{grid-template-columns:1fr}.lesson-side{order:2}}
.lesson-side{position:sticky;top:12px}
.lesson-side .lesson-row{margin-top:6px;padding:8px 10px;font-size:.92rem}
.lesson-row.current{border-color:var(--sun);box-shadow:0 0 0 2px rgba(255,176,32,.25) inset}
body.mode-senior .lesson-row.current{border-color:var(--teal);box-shadow:0 0 0 2px rgba(34,211,238,.2) inset}
.tabs{display:flex;gap:6px;margin:6px 0 14px;border-bottom:2px solid var(--line)}
.tabs button{background:none;border:none;border-bottom:3px solid transparent;margin-bottom:-2px;padding:.5em .9em;cursor:pointer;font-family:var(--head);font-weight:600;color:var(--muted)}
.tabs button[aria-selected="true"]{color:var(--text);border-color:var(--sun)}
body.mode-senior .tabs button[aria-selected="true"]{border-color:var(--teal)}
.article p{max-width:760px}
.article h3{margin-top:18px;color:var(--sun)}
body.mode-senior .article h3{color:var(--teal)}
.callout{border-left:5px solid var(--teal);background:var(--panel2);border-radius:10px;padding:10px 14px;margin:12px 0;max-width:760px}
.callout.real{border-color:var(--sun)}
.widget{background:#081226;border:2px solid var(--line);border-radius:16px;padding:16px;margin:16px 0}
body.mode-senior .widget{background:#06101a;border-width:1px;border-radius:8px}
.widget h4{margin:0 0 8px;font-family:var(--head);font-weight:600}
.widget input[type=range]{width:100%;accent-color:var(--teal)}
.widget .readout{font-family:var(--head);font-size:1.5rem}
body.mode-senior .widget .readout{font-family:"JetBrains Mono",monospace;font-size:1.25rem}
.seg{display:flex;flex-wrap:wrap;gap:6px}
.seg button{padding:.4em .9em;border-radius:999px;border:2px solid var(--line);background:var(--panel2);cursor:pointer;font-family:var(--head)}
.seg button[aria-pressed="true"]{background:var(--teal);color:#021018;border-color:var(--teal)}
body.mode-senior .seg button{border-radius:5px;border-width:1px}
.quiz{max-width:760px}
.qdots{display:flex;gap:6px;margin-bottom:10px}
.qdots i{width:14px;height:14px;border-radius:50%;background:#26305a;display:block}
.qdots i.done{background:var(--good)} .qdots i.now{background:var(--sun)}
.opt{display:block;width:100%;text-align:left;margin:8px 0;padding:12px 14px;border-radius:12px;border:2px solid var(--line);background:var(--panel2);cursor:pointer;font:inherit;color:inherit}
.opt:hover{border-color:var(--blue)}
.opt[aria-pressed="true"]{border-color:var(--sun);background:#2a2410}
body.mode-senior .opt[aria-pressed="true"]{border-color:var(--teal);background:#062330}
.opt.right{border-color:var(--good);background:#0f2a1c}
.opt.wrong{border-color:var(--bad);background:#2d1216}
.feedback{border-radius:12px;padding:12px 14px;margin-top:10px}
.feedback.right{background:#0f2a1c;border:2px solid var(--good)}
.feedback.wrong{background:#2d1216;border:2px solid var(--bad)}
.done-card{text-align:center;max-width:620px;margin:20px auto}
.big-emoji{font-size:3.6rem}
.dlink{background:none;border:1px solid var(--line);border-radius:999px;color:var(--teal);cursor:pointer;padding:.2em .8em;font-size:.82rem;margin-top:8px}
/* 1️⃣  Global text‑wrapping rules – they work for every element in the UI  */
*,
*::before,
*::after {
  /* Prevent the default `white-space: nowrap` that can appear on buttons etc. */
  white-space: normal !important;
  /* Tell the browser that it is allowed to break words at any point */
  word-break: break-word;          /* (breaks long words) */
  overflow-wrap: anywhere;         /* (breaks at the best possible point) */
  hyphens: auto;                   /* (adds hyphenation if supported) */
}

/* 2️⃣  Explicitly set `box-sizing` so padding/margin never inflate widths  */
html { box-sizing: border-box; }
*, *::before, *::after { box-sizing: inherit; }

/* 3️⃣  Allow flex items to shrink – prevents overflow when text grows  */
[class*="flex"], [class*="grid"] {
  min-width: 0;          /* important for flex‑ or grid‑children */
  flex-shrink: 1;        /* allow shrinking */
}

/* 4️⃣  Optional – a tiny visual hint for overflowing content   */
body > #modal .box {          /* modal content can be scroll‑able */
  overflow-y: auto;
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* ---------- wider storm cards + NASA pictures ---------- */
.storm-grid{grid-template-columns:repeat(auto-fit,minmax(min(100%,440px),1fr))}
.storm-card{padding:16px}
.storm-card,.storm-card *{word-break:normal;overflow-wrap:normal;hyphens:none}
.storm-top{display:flex;gap:16px;align-items:flex-start}
.storm-info{display:flex;flex-direction:column;gap:8px;min-width:0;flex:1}
.storm-thumb{display:block;width:128px;height:128px;flex:none;border:3px solid var(--line);background:#000;object-fit:cover}
.pic{display:block}
.pic.failed{display:none}
.pics{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr));gap:14px;margin:16px 0;text-align:left}
.pics .pic img{display:block;width:100%;height:auto;aspect-ratio:1;object-fit:cover;border:3px solid var(--line);background:#000}
.pics .cap{font-size:.85rem;color:var(--muted);margin-top:4px}
@media (max-width:520px){.storm-top{flex-direction:column}.storm-thumb{width:100%;height:auto;aspect-ratio:1}}

/* ---------- pixel icons (replace emoji) ---------- */
.pxi{display:inline-block;position:relative;height:1em;line-height:0;vertical-align:-.14em}
.pxi svg{display:block;height:1em;width:auto}
.pxe{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.stars .star{display:inline-block}
.stars .star.on{animation:starpop .55s var(--d,0s) cubic-bezier(.2,1.6,.4,1) both}
.stars .star-off{opacity:.3;filter:grayscale(1)}
@keyframes starpop{from{transform:scale(0) rotate(-70deg);opacity:0}to{transform:none;opacity:1}}
.stars{display:flex;justify-content:center;gap:14px;letter-spacing:0}

/* ---------- home page picture of the day ---------- */
#apod{position:fixed;inset:0;z-index:-3;background:#000 center/cover no-repeat;opacity:0;transition:opacity 1s;pointer-events:none}
#apod::after{content:"";position:absolute;inset:0;background:rgba(6,10,24,.5)}
#sky{transition:opacity 1s}
body.on-title.has-apod #apod{opacity:1}
body.on-title.has-apod #sky{opacity:0}
#apod-credit{position:fixed;left:12px;top:10px;z-index:6;max-width:min(320px,34vw);font-size:.7rem;color:var(--muted);background:rgba(6,10,24,.78);padding:.3em .6em;border:2px solid var(--line);display:none}
body.on-title.has-apod #apod-credit{display:block}

/* ---------- wall builder (junior) ---------- */
.wb{display:flex;flex-direction:column;gap:12px}
.wb-stage{display:flex;align-items:center;justify-content:center;gap:10px;padding:12px;background:#0a1028;border:3px solid var(--line);flex-wrap:wrap}
.wb-stage small{display:block;text-align:center;font-family:var(--head);font-size:.55rem;color:var(--muted);margin-top:4px}
.wb-sun{display:flex;flex-direction:column;align-items:center;font-size:3.2rem}
.wb-rays{display:flex;flex-direction:column;justify-content:center;gap:16px;width:80px;min-height:60px;overflow:hidden}
.wb-rays i{display:block;height:5px;width:20px;background:var(--sun);animation:wbray 1s linear infinite}
.wb-rays i:nth-child(2n){animation-delay:-.4s}
.wb-rays i:nth-child(3n){animation-delay:-.7s}
.wb-rays.out i{background:var(--sun2)}
@keyframes wbray{from{transform:translateX(-24px)}to{transform:translateX(84px)}}
.wb-wall{display:grid;grid-template-columns:repeat(2,42px);gap:3px;padding:4px;border:3px solid var(--line);background:#06101a}
.wb-cell{width:42px;height:42px;display:grid;place-items:center;font-size:1.5rem;border:3px solid #0a1028;border-radius:0;padding:0;cursor:pointer;color:var(--text)}
.wb-cell.empty{border:2px dashed #26305a;background:transparent;cursor:default}
.wb-cell.water{background:#2f5fb0}
.wb-cell.food{background:#a1700f}
.wb-cell.crate{background:#6b4423}
.wb-cell:not(.empty):hover{border-color:var(--sun);transform:translateY(-2px)}
.wb-crewgrid{display:grid;grid-template-columns:repeat(2,34px);gap:4px}
.wb-pile{display:flex;flex-wrap:wrap;gap:6px;min-height:56px;padding:8px;border:2px dashed var(--line);align-items:center}
.wb-meters{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:10px}
.wb-m .lbl{display:flex;justify-content:space-between;gap:8px;font-size:.9rem;margin-bottom:3px}
.wb-say{display:flex;gap:10px;align-items:center;background:var(--panel2);border:2px solid var(--line);padding:8px 12px;min-height:60px}