*{box-sizing:border-box}
html,body{margin:0;width:100%;height:100%;overflow:hidden}
body{display:flex;flex-direction:column;background:#0e1c20;color:#f4edd9;font-family:var(--a-font)}
button,input,textarea{font:inherit}
button{cursor:pointer}
button:focus-visible{outline:2px solid #f4cf8d;outline-offset:4px}
.random-stage{position:relative;isolation:isolate;width:100%;flex:1 1 auto;min-height:0;overflow:hidden;background:radial-gradient(ellipse at 50% 48%,#233a35 0%,#122727 45%,#0c181d 100%)}
.random-stage:before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;background:radial-gradient(circle at 20% 75%,#a4c5a91c,transparent 33%),radial-gradient(circle at 80% 25%,#f9ac7b18,transparent 30%)}
.random-stage canvas{position:absolute;inset:0;display:block;width:100%;height:100%}
.random-header{position:absolute;left:22px;top:19px;z-index:2;display:flex;align-items:center;gap:11px;text-shadow:0 2px 5px #0008}
.random-header a{display:grid;place-items:center;width:35px;height:35px;border:1px solid #d5c6a576;border-radius:50%;background:#16302bc9;color:#ffedcc;text-decoration:none;font-size:30px;line-height:1}
.random-header strong{color:#f4edd9;font:600 var(--a-fs-2xl) var(--a-font);letter-spacing:.035em}
.random-header span{padding-left:12px;border-left:1px solid #d5c6a576;color:#ddc7a8;font-size:9px;font-weight:700;letter-spacing:.16em}
.random-toggle{position:absolute;top:18px;right:24px;z-index:4;display:grid;place-items:center;width:52px;height:52px;padding:0;border:1px solid #f2ca8f99;border-radius:50%;background:radial-gradient(circle at 35% 25%,#355345,#112a27);color:#f8cc93;font:700 29px var(--a-font);box-shadow:0 5px 25px #001b1a88,inset 0 1px #fff3;transition:transform .35s,box-shadow .35s}
.random-toggle:hover,.random-toggle[aria-expanded=true]{transform:scale(1.06);box-shadow:0 0 25px #efb47733,inset 0 1px #fff3}
.random-controls{position:absolute;top:85px;right:24px;z-index:3;width:min(335px,calc(100% - 48px));max-height:calc(100svh - 110px);overflow-y:auto;padding:16px;border:1px solid #bdac855e;border-radius:18px;background:linear-gradient(145deg,#18332de8,#132626ee);box-shadow:0 18px 50px #0617188c,inset 0 1px #ffffff1a;backdrop-filter:blur(12px);opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-18px) scale(.18);transform-origin:top right;transition:opacity .35s,transform .45s cubic-bezier(.22,1,.36,1),visibility 0s .45s}
.random-controls.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0) scale(1);transition-delay:0s}
.random-tabs{display:grid;grid-template-columns:1fr 1fr;gap:5px;margin-bottom:16px;padding:4px;border:1px solid #b9b69033;border-radius:11px;background:#0a1d1d7c}
.random-tabs button{border:0;border-radius:8px;padding:9px 4px;background:transparent;color:#c6cbbf;font-size:var(--a-fs-xs);font-weight:700}
.random-tabs button[aria-selected=true]{background:#d9ac75;color:#23322a;box-shadow:0 2px 8px #0004}
.random-form[hidden]{display:none}
.random-form label{display:block;color:#e4d4b9;font-size:var(--a-fs-2xs);font-weight:700;letter-spacing:.03em}
.random-fields{display:grid;grid-template-columns:1fr 1fr;gap:9px}
.random-form input,.random-form textarea{display:block;width:100%;margin-top:7px;border:1px solid #c9bc9866;border-radius:9px;padding:9px 11px;background:#071c1ad9;color:#fff4dd;outline:none;font-size:var(--a-fs-md);letter-spacing:normal}
.random-form textarea{min-height:116px;resize:vertical;max-height:28svh;line-height:1.45}
.random-form input:focus,.random-form textarea:focus{border-color:#f4cf8d;box-shadow:0 0 0 2px #f4cf8d33}
.random-draw{width:100%;margin-top:13px;border:1px solid #f8dc9a;border-radius:10px;padding:10px;background:linear-gradient(#f7d795,#cb8d5f);color:#3c2f28;font-size:var(--a-fs-md);font-weight:900;box-shadow:0 4px 0 #8b5c40;transition:transform .18s}
.random-draw:hover{transform:translateY(-2px)}.random-draw:active{transform:translateY(2px)}
.random-draw span{margin-left:5px}
.random-form p{margin:12px 0 0;color:#bac7b7;font-size:var(--a-fs-2xs);line-height:1.5}
.random-remaining{display:block;margin-top:9px;color:#f4cf8d;font-size:var(--a-fs-xs);font-weight:700}
.random-sr-only,.random-result{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0;pointer-events:none}
.random-error{margin:12px 0 0;color:#ffb8ae;font-size:var(--a-fs-xs);line-height:1.5}
.random-fallback .random-result{left:50%;top:66%;z-index:2;transform:translateX(-50%);width:min(90%,560px);height:auto;padding:12px;margin:0;overflow:visible;clip-path:none;white-space:normal;text-align:center;background:#0e2523dc;border-radius:12px;color:#f8cc93}
.random-fallback .random-result strong{display:block;font-size:var(--a-fs-xl)}
.random-decision{position:fixed;inset:0;width:min(440px,calc(100% - 32px));max-height:calc(100svh - 32px);margin:auto;padding:28px;border:1px solid #e8c08c99;border-radius:20px;background:linear-gradient(145deg,#244036,#102a2a);color:#f7efd9;text-align:center;box-shadow:0 22px 70px #041413c9}
.random-decision::backdrop{background:#061714b8;backdrop-filter:blur(7px)}
.random-decision-label{margin:0;color:#f0c78e;font-size:var(--a-fs-2xs);font-weight:800;letter-spacing:.2em}
.random-decision h2{margin:13px 0 8px;font:600 var(--a-fs-2xl) var(--a-font)}
.random-decision strong{display:block;overflow-wrap:anywhere;color:#ffd69b;font-size:clamp(26px,6vw,40px);line-height:1.25}
.random-decision p:not(.random-decision-label){color:#d1ddcf;font-size:var(--a-fs-sm);line-height:1.5}
.random-decision-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:20px}
.random-decision-actions button{min-height:44px;border:1px solid #e9c996;border-radius:10px;padding:9px;background:#e8c58e;color:#26392f;font-size:var(--a-fs-md);font-weight:800}
.random-decision-actions button:last-child{border-color:#e7b2a1;background:#633b34;color:#fff1e6}
.random-decision-actions button:hover{filter:brightness(1.1)}
@media(max-width:700px){.random-header{top:10px;left:11px}.random-header strong{font-size:var(--a-fs-xl)}.random-header span{font-size:8px}.random-toggle{top:9px;right:10px;width:43px;height:43px;font-size:var(--a-fs-2xl)}.random-controls{top:63px;right:10px;width:min(335px,calc(100% - 20px));max-height:calc(100svh - 85px);padding:11px}.random-tabs{margin-bottom:10px}.random-form p{display:none}}
@media(max-height:520px) and (min-width:701px){.random-controls{top:72px;right:15px;max-height:calc(100svh - 84px)}.random-toggle{top:10px;right:15px}.random-header{top:12px}}
@media(prefers-reduced-motion:reduce){.random-draw,.random-toggle,.random-controls{transition:none}}
/* ---- Giao diện chung của cảnh UFO (lớp random-cube giữ tên cũ): theo bộ chuẩn ADCODE, sáng/tối theo html[data-theme] ---- */
.random-cube{background:var(--rc-bg)}
.random-cube:before{display:none}
.random-cube{--rc-bg:#d6dbe2;--rc-ink:#172335;--rc-muted:#536079;--rc-panel:#ffffffd9;--rc-line:#c3ccd8;--rc-field:#ffffff;--rc-shadow:0 18px 50px #1723352e}
html[data-theme=dark] .random-cube{--rc-bg:#0b1220;--rc-ink:#e4eafa;--rc-muted:#a2aec3;--rc-panel:#172234e6;--rc-line:#2b3950;--rc-field:#101827;--rc-shadow:0 18px 50px #0009}
body:has(.random-cube){background:var(--a-bg);color:var(--a-text)}
.random-cube .random-header{text-shadow:none}
.random-cube .random-header a{border-color:var(--rc-line);background:var(--rc-panel);color:var(--rc-ink);backdrop-filter:blur(8px)}
.random-cube .random-header strong{color:var(--rc-ink);font-weight:700;letter-spacing:-.01em}
.random-cube .random-header span{border-left-color:var(--rc-line);color:var(--rc-muted);font-size:var(--a-fs-2xs)}
.random-cube .random-toggle{border-color:var(--a-primary);background:var(--a-primary);color:var(--a-on-primary);box-shadow:0 8px 24px #3264ea55}
.random-cube .random-toggle:hover,.random-cube .random-toggle[aria-expanded=true]{box-shadow:0 0 0 6px #3264ea2e,0 8px 24px #3264ea55}
.random-cube button:focus-visible{outline-color:var(--a-accent)}
.random-cube .random-controls{border-color:var(--rc-line);background:var(--rc-panel);box-shadow:var(--rc-shadow);color:var(--rc-ink)}
.random-cube .random-tabs{border-color:var(--rc-line);background:var(--a-surface-2)}
.random-cube .random-tabs button{color:var(--rc-muted)}
.random-cube .random-tabs button[aria-selected=true]{background:var(--a-primary);color:var(--a-on-primary);box-shadow:none}
.random-cube .random-form label{color:var(--rc-ink)}
.random-cube .random-form input,.random-cube .random-form textarea{border-color:var(--rc-line);background:var(--rc-field);color:var(--rc-ink)}
.random-cube .random-form input:focus,.random-cube .random-form textarea:focus{border-color:var(--a-accent);box-shadow:0 0 0 3px #3264ea33}
.random-cube .random-draw{border-color:var(--a-primary);background:var(--a-primary);color:var(--a-on-primary);box-shadow:0 4px 0 #1d3f9e}
.random-cube .random-form p{color:var(--rc-muted)}
.random-cube .random-remaining{color:var(--a-accent)}
.random-cube .random-error{color:var(--a-bad)}
.random-cube .random-decision{border-color:var(--rc-line);background:var(--a-surface);color:var(--a-text);box-shadow:var(--rc-shadow)}
.random-cube .random-decision::backdrop{background:#0b122080;backdrop-filter:blur(6px)}
.random-cube .random-decision-label{color:var(--a-accent)}
.random-cube .random-decision strong{color:var(--a-primary)}
html[data-theme=dark] .random-cube .random-decision strong{color:var(--a-accent)}
.random-cube .random-decision p:not(.random-decision-label){color:var(--a-muted)}
.random-cube .random-decision-actions button{border-color:var(--a-primary);background:var(--a-primary);color:var(--a-on-primary)}
.random-cube .random-decision-actions button:last-child{border-color:var(--a-line);background:var(--a-surface-2);color:var(--a-bad)}
.random-cube.random-fallback .random-result,.random-cube .random-fallback .random-result{background:var(--rc-panel);color:var(--rc-ink)}
/* Khung kết quả (cảnh khối): nhỏ gọn ở mép dưới, không phủ nền mờ, để tấm biển chữ 3D vẫn nhìn rõ */
.random-cube .random-decision.is-dock{
  position:fixed;inset:auto auto 22px 50%;z-index:5;margin:0;transform:translateX(-50%);
  width:min(540px,calc(100% - 24px));max-height:none;padding:14px 16px 14px 22px;
  display:grid;grid-template-columns:minmax(0,1fr) auto;grid-template-areas:"label actions" "title actions" "value actions";column-gap:18px;align-items:center;
  text-align:left;border-radius:18px;background:var(--rc-panel);backdrop-filter:blur(10px);box-shadow:var(--rc-shadow);
  animation:rc-dock-in .45s ease-out both
}
.random-cube .random-decision.is-dock:not([open]){display:none}
.random-cube .random-decision.is-dock .random-decision-label{grid-area:label;font-size:var(--a-fs-2xs);letter-spacing:.18em}
.random-cube .random-decision.is-dock h2{grid-area:title;margin:2px 0 0;font-size:var(--a-fs-md);font-weight:600;color:var(--a-muted)}
.random-cube .random-decision.is-dock strong{grid-area:value;margin-top:2px;font-size:clamp(24px,3.6vw,32px);line-height:1.15}
.random-cube .random-decision.is-dock #random-decision-hint{display:none}
.random-cube .random-decision.is-dock .random-decision-actions{grid-area:actions;display:flex;flex-direction:column;gap:8px;margin:0}
.random-cube .random-decision.is-dock .random-decision-actions button{min-height:38px;min-width:118px;padding:6px 14px}
@keyframes rc-dock-in{from{opacity:0;transform:translate(-50%,24px)}to{opacity:1;transform:translateX(-50%)}}
@media(max-width:560px){.random-cube .random-decision.is-dock{grid-template-columns:1fr;grid-template-areas:"label" "title" "value" "actions";text-align:center;bottom:12px}.random-cube .random-decision.is-dock .random-decision-actions{flex-direction:row;justify-content:center;margin-top:8px}}
@media(prefers-reduced-motion:reduce){.random-cube .random-decision.is-dock{animation:none}}
/* ---- Cảnh UFO sân trường (random-ufo.js) ---- */
.random-ufo{background:#7cc4ea}
.random-ufo .random-header strong{color:#13233b}
.random-ufo .random-header span{color:#2c3f5c}
.random-sound{position:absolute;top:22px;right:88px;z-index:4;display:grid;place-items:center;width:44px;height:44px;padding:0;border:1px solid var(--rc-line);border-radius:50%;background:var(--rc-panel);color:var(--rc-ink);box-shadow:var(--rc-shadow);backdrop-filter:blur(8px)}
.random-sound[aria-pressed=false]{color:var(--rc-muted)}
.random-sound:hover{transform:scale(1.06)}
@media(max-width:700px){.random-sound{top:9px;right:62px;width:40px;height:40px}}
@media(max-height:520px) and (min-width:701px){.random-sound{top:12px;right:76px}}
@media(max-width:480px){.random-ufo .random-header span{display:none}}