/* VORTEXA Challenge 150 · clean rebuild, 2026-11-15 */
:root{color-scheme:dark;--bg:#03091b;--panel:#0a1638;--edge:#2e5eac;--text:#f5faff;--muted:#bbcee9;--cyan:#48dcff;--violet:#a261fa;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:320px;min-height:100dvh;color:var(--text);background:var(--bg);overflow-x:hidden}
.ambient{position:fixed;inset:0;z-index:-1;pointer-events:none;background:radial-gradient(ellipse at 52% 0%,#30207988,transparent 46%),radial-gradient(ellipse at 100% 78%,#104a9870,transparent 60%),linear-gradient(150deg,#040817,#08122b 55%,#04071c)}
a{color:#9ae9ff;text-underline-offset:4px}a:hover{text-decoration:underline}
button,input{font:inherit}button{cursor:pointer;min-height:46px;padding:10px 17px;border:1px solid #4b8de9;border-radius:13px;color:white;background:#152e66;font-weight:700;transition:background .2s}
button:hover:not(:disabled){background:#2652a0}button:disabled{opacity:.54;cursor:not-allowed}
button:focus-visible,input:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #a9fbff;outline-offset:3px}
[hidden]{display:none!important}.skip{position:absolute;left:13px;top:-100px;background:white;color:#001128;padding:12px;z-index:100}.skip:focus{top:12px}
.site{max-width:1230px;margin:auto;padding:0 23px}.topbar{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px 0 21px;border-bottom:1px solid #263e70}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:#fff}.brand img{filter:drop-shadow(0 0 13px #4ca2ff)}.brand span{display:grid;gap:4px}.brand strong{font-size:clamp(22px,3vw,32px);letter-spacing:.12em}.brand sup{font-size:10px;vertical-align:super}.brand small{color:#c9daef;letter-spacing:.02em;font-size:11px}
.header-actions{display:flex;flex-wrap:wrap;gap:9px;align-items:center}.header-actions button,.nav-pill{min-height:42px;padding:10px 13px;border-radius:12px;border:1px solid #456eb7;background:#0a1e49;text-decoration:none;color:#eaf7ff;font-size:13px}
.welcome{display:grid;grid-template-columns:minmax(0,1fr) 180px;gap:30px;align-items:center;padding:35px 25px 22px}
.overline{font-size:11px;font-weight:850;letter-spacing:.19em;text-transform:uppercase;color:#73d9ff}
.welcome h1{font-size:clamp(39px,6.5vw,82px);letter-spacing:-.07em;line-height:.95;margin:13px 0}.welcome h1 span{background:linear-gradient(100deg,#41daff,#a866f9);-webkit-background-clip:text;background-clip:text;color:transparent}
.welcome>div:first-child>p:last-child{font-size:16px;color:var(--muted);max-width:690px;line-height:1.68}
.orbit{display:grid;place-items:center;width:170px;height:170px;border-radius:50%;border:2px solid #63ddff;background:radial-gradient(circle,#244c9f,#2d1361 76%,#091230);box-shadow:0 0 21px #3e8cf8,0 0 44px #973bdb77,inset 0 0 29px #7139dd}.orbit span{font-size:89px;font-weight:900;font-style:italic;line-height:.8}.orbit small{font-size:11px;letter-spacing:.15em;font-weight:850;color:#c3efff}
.status-panel{border:1px solid #3669bd;border-radius:22px;padding:19px 22px;margin:12px 0 18px;background:linear-gradient(115deg,#0d2350,#10183e 75%);box-shadow:0 0 20px #1973d128}.status-panel strong{font-size:17px;color:#a6eaff}.status-panel p{color:var(--muted);margin:10px 0 14px;line-height:1.5}.quick-actions,.task-actions{display:flex;flex-wrap:wrap;gap:10px}
.action{border-color:#7ce8ff;background:linear-gradient(105deg,#146ac5,#723fec);box-shadow:0 0 16px #3279e65a}
.challenge-layout{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(275px,.83fr);gap:19px;align-items:start}.vx-game-core{min-width:0}.arena,.info-card{background:linear-gradient(135deg,#0b1e47,#0c1332);border:1px solid #3059aa;border-radius:25px;box-shadow:inset 0 0 20px #204b943c,0 0 24px #175dd126}
.arena{padding:clamp(17px,3vw,29px);scroll-margin-top:25px}.arena-top{display:flex;justify-content:space-between;align-items:center;gap:12px}.arena h2{font-size:24px;margin:6px 0 18px}.tier{border:1px solid #9370d9;border-radius:20px;padding:7px 13px;color:#d9caff;background:#231e55;font-size:11px;font-weight:800;letter-spacing:.08em}
.stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.stats>div{border:1px solid #3764aa;border-radius:16px;padding:17px 12px;background:#0c2451;min-width:0}.stats small,.stats strong{display:block}.stats small{color:#b5d3ed;font-size:10px;letter-spacing:.09em}.stats strong{font-size:clamp(18px,3.2vw,28px);margin-top:7px}
.progress-label{display:block;font-size:12px;color:#c9e0f1;margin:20px 0 9px}progress{width:100%;height:14px;accent-color:#35d5fc;display:block} .milestone{font-size:13px;color:#a3f4e9;margin:11px 0 17px}
.task{background:#081835;border:1px solid #3154a0;border-radius:20px;padding:clamp(16px,3vw,26px)}.task h3{font-size:clamp(23px,4vw,35px);letter-spacing:-.025em;line-height:1.34;min-height:64px;margin:12px 0 17px}.clock{color:#c3aaff;font-weight:700;min-height:22px}
.task label{display:block;color:#c1e3fa;font-weight:700;margin:15px 0 9px}.task input{width:100%;max-width:420px;min-height:55px;padding:13px 16px;background:#11295a;border:1px solid #638dda;border-radius:13px;color:white;font-size:21px}
#stepTwoGroup{margin:20px 0;border-top:1px solid #31466d;padding-top:6px}#stepTwoQuestion{color:#cde5ff;line-height:1.6;font-size:16px}
.task-actions{margin-top:19px}.hints{padding:12px 0}.hints button{margin:5px 6px 5px 0}.hints p{line-height:1.6;color:#c8e0f4}
#feedback{line-height:1.6;min-height:28px;font-weight:700;color:#82f3d5}.bad{color:#ffbcc6!important}.good{color:#88ffd7!important}
.sidebar{display:grid;gap:17px}.info-card{padding:23px}.info-card h2{font-size:21px;margin:8px 0 15px}.info-card p{line-height:1.65;color:var(--muted)}.balance{display:block;font-size:clamp(21px,3vw,29px);letter-spacing:-.03em;color:#a6f5ff;overflow-wrap:anywhere}.muted{display:block;color:#acbed8;line-height:1.55;font-size:12px;margin:7px 0 17px}.inline-link{display:block;margin:14px 0;font-size:14px;font-weight:650}
.vx-temp-rewards{margin-top:20px!important;border:1px solid #426dc2!important;border-radius:24px!important}
footer{border-top:1px solid #2e4a7b;margin:35px 0 20px;padding:23px 7px;color:#cddff7;font-size:14px}footer p{font-size:12px;color:#9fb0c8}
body.large{font-size:118%}body.contrast{--bg:#000;--panel:#000;--text:#fff;--muted:#fff;background:#000}body.contrast .ambient{display:none}body.contrast .arena,body.contrast .info-card{background:#000;border-color:#fff}
@media(max-width:850px){.challenge-layout{grid-template-columns:1fr}.sidebar{grid-template-columns:repeat(2,minmax(0,1fr))}.info-card:last-child{grid-column:1/-1}}
@media(max-width:610px){.site{padding:0 12px}.topbar{flex-wrap:wrap}.header-actions{width:100%;justify-content:space-between}.header-actions button,.nav-pill{flex:1;text-align:center;min-width:0;font-size:12px;padding:9px 6px}.welcome{padding:32px 7px 17px;grid-template-columns:minmax(0,1fr) 96px;gap:8px}.welcome h1{font-size:clamp(34px,8vw,52px)}.orbit{width:88px;height:88px}.orbit span{font-size:42px}.orbit small{font-size:7px}.welcome>div:first-child>p:last-child{font-size:13px}.status-panel{padding:16px}.stats{gap:6px}.stats>div{padding:12px 8px}.stats small{font-size:9px}.arena{padding:15px}.task{padding:15px}.task-actions button{flex:1}.sidebar{grid-template-columns:1fr}.info-card:last-child{grid-column:auto}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

/* Four fully independent free games + learning assistant */
.four-games{margin:9px 0 24px;border:1px solid #345aaf;border-radius:24px;padding:clamp(16px,3vw,25px);background:linear-gradient(120deg,#0b1c45dd,#130e36dd)}
.four-header{display:flex;justify-content:space-between;gap:12px;align-items:end;margin-bottom:18px}.four-header h2{margin:5px 0;font-size:clamp(20px,3.4vw,28px)}.four-header small{color:#a9c3df}
.four-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.four-game{display:flex;flex-direction:column;gap:9px;min-width:0;min-height:153px;padding:18px 14px 13px;border:1px solid #4370d0;border-radius:18px;background:linear-gradient(140deg,#122c60,#271748);color:#eaf6ff;text-decoration:none;box-shadow:inset 0 0 15px #3169ca38;transition:transform .2s,background .2s}
.four-game:hover{transform:translateY(-2px);background:linear-gradient(125deg,#1b4986,#4b207b);text-decoration:none}.four-game.active{border-color:#5decfc;box-shadow:0 0 19px #18c4ec5c}
.four-game strong{font-size:16px;line-height:1.24}.four-game small{font-size:12px;color:#c1d5f1}
.game-sigil{display:grid;place-items:center;width:44px;height:44px;border-radius:15px;border:1px solid #5ad5ff;background:#1b397b;font-size:19px;font-weight:900;color:#a7f5ff}
.vtx-ai-card{margin-top:19px;border:1px solid #6d62d6;border-radius:24px;padding:clamp(17px,3vw,25px);background:radial-gradient(circle at 88% 12%,#3a1c78a8,transparent 55%),linear-gradient(145deg,#111a43,#091634);box-shadow:0 0 22px #7b4ae52c}
.vtx-ai-card h2{margin:4px 0 10px}.vtx-ai-card>p{font-size:14px;line-height:1.7;color:#cee0fa}
.vtx-ai-card label{display:block;font-size:14px;font-weight:700;color:#d6eaff;margin:13px 0 9px}
.vtx-ai-card textarea{width:100%;display:block;resize:vertical;min-height:86px;padding:14px;border:1px solid #678acf;border-radius:15px;background:#0b1f4b;color:#fff;line-height:1.55}
.vtx-ai-card .task-actions{margin:13px 0}.vtx-ai-card .task-actions button{min-height:48px}
.ai-response{border:1px solid #5978c3;border-radius:16px;background:#0a2248;padding:18px;line-height:1.65;min-height:70px;color:#d6faff;white-space:pre-wrap}
.ai-disclaimer{font-size:12px!important;color:#acb9d8!important}
@media(max-width:820px){.four-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.four-header{align-items:start;flex-direction:column}}
@media(max-width:430px){.four-grid{gap:8px}.four-game{min-height:142px;padding:12px}.four-game strong{font-size:14px}.four-game small{font-size:11px}.game-sigil{width:38px;height:38px}.vtx-ai-card .task-actions button{flex:1 1 100%}}

/* VORTEXA Guardian: optional learning feedback and operational observability */
.vtx-feedback{margin:16px 0;padding:16px;border:1px solid #546fbb;background:linear-gradient(140deg,#152455,#0b1a42);border-radius:16px}
.vtx-feedback p{font-size:13px;line-height:1.6;color:#cadcf8}.feedback-consent{display:flex!important;align-items:flex-start;gap:10px;line-height:1.5}
.feedback-consent input{width:21px;height:21px;flex:0 0 21px;accent-color:#72dcff;margin:2px 0 0}
.vtx-feedback .task-actions{margin-top:14px}.guardian-summary{margin-top:20px;border:1px solid #2d8fa9;border-radius:20px;padding:18px;background:linear-gradient(130deg,#0e2a47,#0b153b)}
.guardian-summary h3{margin:6px 0 12px;font-size:19px}.guardian-summary>p:not(.overline){font-size:13px;line-height:1.65;color:#b9e1f2}
.guardian-chips{display:flex;flex-wrap:wrap;gap:7px;margin:12px 0}.guardian-chips span{border:1px solid #387dbe;background:#0b2654;padding:8px 10px;border-radius:18px;color:#d4ecff;font-size:11px;line-height:1.35}
.guardian-summary button{margin-top:8px}#vtxFeedbackStatus{min-height:23px;color:#9eece7}
@media(max-width:520px){.guardian-summary{padding:14px}.vtx-feedback .task-actions button{flex:1 1 100%}}

/* VORTEXA IA introduction: first-screen guide, existing public portal unchanged. */
.vtx-ai-intro{display:grid;grid-template-columns:104px minmax(0,1fr);gap:20px;align-items:start;margin:4px 0 20px;padding:clamp(17px,3.5vw,28px);border:1px solid #54c3e7;border-radius:24px;background:radial-gradient(ellipse at 8% 10%,#15396daa,transparent 48%),linear-gradient(132deg,#0c2149,#171236);box-shadow:inset 0 0 28px #4af2ff12,0 9px 35px #01030a85}
.vtx-intro-orb{position:relative;display:grid;place-items:center;width:90px;height:90px;margin-top:7px;border-radius:50%;border:2px solid #74f9ff;background:radial-gradient(circle at 40% 30%,#2399c9,#212276 60%,#060c2b);box-shadow:0 0 25px #33dcf08a}
.vtx-intro-orb span{font-size:32px;font-weight:900;letter-spacing:-.05em;color:#e7fdff;text-shadow:0 0 14px #5df2ff}
.vtx-intro-orb i{position:absolute;inset:-9px;border:1px dashed #79ddfc;border-radius:50%;opacity:.7;animation:vtxIntroOrbit 12s linear infinite}
@keyframes vtxIntroOrbit{to{transform:rotate(360deg)}}
.vtx-intro-main{min-width:0}.vtx-ai-intro h2{margin:3px 0 9px;font-size:clamp(20px,3vw,29px)}
.vtx-intro-main>p{font-size:14px;line-height:1.65;color:#d9e7ff;margin:10px 0}
.vtx-intro-form label{display:block;font-weight:700;margin:15px 0 7px;color:#eaf8ff;font-size:13px}
.vtx-intro-input{display:flex;align-items:stretch;gap:9px}
.vtx-intro-input input{min-width:0;flex:1;background:#091937;border:1px solid #5c89cc;border-radius:13px;color:white;padding:12px;font-size:15px;min-height:48px}
.vtx-intro-input input::placeholder{color:#a4bcd9}.vtx-intro-input button{min-width:130px}
.vtx-intro-actions{display:flex;flex-wrap:wrap;align-items:center;gap:9px;margin:12px 0}
.vtx-intro-actions button{font-size:12px;min-height:41px;padding:8px 12px;background:#14285b}
.vtx-intro-actions a,.vtx-intro-feedback{font-size:13px;font-weight:750;color:#99edff}
.vtx-intro-answer{padding:12px 15px;border:1px solid #325f96;border-left:3px solid #6cedf2;background:#0a2344;border-radius:13px;line-height:1.6;color:#e6faff!important;white-space:pre-wrap}
.vtx-ai-intro .ai-disclaimer{margin:7px 0!important}.vtx-intro-feedback{display:inline-block;margin-top:10px}
.vtx-gate-ai{display:flex;gap:12px;align-items:center;margin:8px 0 19px;padding:12px;border:1px solid #56a7e7;border-radius:17px;background:linear-gradient(125deg,#113160,#17264b)}
.vtx-gate-ai-avatar{flex:none;display:grid;place-items:center;width:48px;height:48px;border-radius:50%;border:1px solid #63f5ff;background:radial-gradient(circle at 30% 22%,#226fa6,#27205c);font-size:20px;font-weight:900;box-shadow:0 0 14px #40d9e65e}
.vtx-gate-ai strong{font-size:15px}.vtx-gate-ai p{margin:5px 0 0;font-size:12px;line-height:1.45!important;color:#d5e9ff}
#vx-ai-gate-demo{background:#09384c;border:1px solid #5beadd;color:#e4fff9;font-weight:800}
@media(max-width:650px){.vtx-ai-intro{grid-template-columns:1fr;gap:10px}.vtx-intro-orb{width:72px;height:72px;margin:0 auto}.vtx-intro-orb span{font-size:26px}.vtx-intro-input{flex-direction:column}.vtx-intro-input button{width:100%}.vtx-intro-actions button{flex:1 1 auto}}
@media(prefers-reduced-motion:reduce){.vtx-intro-orb i{animation:none}}