:root{--bg:#050812;--case:#0053b8;--panel:#00429a;--border:#002f6e;--text:#f5f7ff;--muted:#b9c3df;--off:#f4f6fb;--active:#6aa7ff;--visited:#c3d7ff;--orange:#ff7a2a}*{box-sizing:border-box}body{margin:0;min-height:100vh;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--text);background:radial-gradient(circle at top,#081020 0,var(--bg) 55%,#000 100%);display:flex;align-items:center;justify-content:center;padding:18px}.device{width:min(1480px,100%);background:var(--case);border-radius:24px;padding:18px 22px 26px;box-shadow:0 24px 40px #0009,inset 0 0 0 2px #fff1}.head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:12px}.brand{font-weight:700;text-transform:uppercase;font-size:14px;letter-spacing:0}.muted{color:var(--muted)}.layout{display:grid;grid-template-columns:320px minmax(430px,1fr) 330px;gap:20px;align-items:start}.rail,.side,.play{display:flex;flex-direction:column;gap:12px}.rail,.panel,.status{background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:12px}.rail{max-height:620px}.top{display:flex;justify-content:center;gap:28px;align-items:center;background:var(--panel);border:1px solid var(--border);border-radius:16px;padding:12px 18px}.label{font-size:11px;color:var(--muted);margin-bottom:6px}.seg{min-width:120px;padding:10px 18px;border-radius:6px;background:radial-gradient(circle at 20% 0,#26252c 0,#050509 45%,#050306 100%);border:1px solid #262628;color:var(--orange);font:40px Courier New,monospace;text-align:right}.lamps{display:flex;flex-direction:column;gap:10px}.lamp{width:44px;height:44px;border-radius:6px;background:#0a0b10;border:7px solid #00347f;box-shadow:inset 0 0 10px #000e}.lamp.on{background:#fff;box-shadow:0 0 16px #ffffffe6}.lamp.red.on{background:#ff4033;box-shadow:0 0 16px #ff4033e6}.board-wrap{background:var(--panel);border-radius:18px;border:1px solid var(--border);padding:18px;display:flex;justify-content:center}.board{display:grid;grid-template-columns:repeat(5,64px);grid-auto-rows:64px;gap:10px}.cell{width:64px;height:64px;border-radius:10px;background:var(--off);border:1px solid #c2c8d8;box-shadow:inset 0 0 6px #fff8,0 4px 8px #0006}.cell.visited{background:var(--visited)}.cell.active{background:var(--active);transform:translateY(-2px);box-shadow:0 0 14px #6aa7ffe6,0 8px 16px #0008}.pads{display:flex;gap:56px;justify-content:center}.pad{width:54px;height:54px;border-radius:50%;border:0;cursor:pointer;box-shadow:0 4px 8px #000b,inset 0 0 0 2px #0008}.pad:disabled{opacity:.45;cursor:default}.blue{background:radial-gradient(circle at 30% 0,#3f8bff 0,#0043a8 65%,#001a57 100%)}.yellow{background:radial-gradient(circle at 30% 0,#ffe857 0,#ffc800 65%,#8a5f00 100%)}.pick{display:flex;gap:8px}select,input,textarea{width:100%;border-radius:6px;border:1px solid #0009;padding:8px 10px;background:#062f66;color:var(--text)}label{display:block;margin:8px 0;font-size:13px}.btn,.declare button,.item{border:1px solid #0009;border-radius:6px;padding:8px 12px;background:#083772;color:#e7f0ff;cursor:pointer}.small{font-size:12px;padding:6px 10px}.btn:hover,.declare button:hover,.item:hover{background:#0c4b9b}.declare{display:grid;grid-template-columns:1fr 1fr;gap:8px}.hidden{display:none!important}pre{white-space:pre-wrap;color:var(--muted);font:13px/1.45 system-ui,sans-serif;max-height:320px;overflow:auto}.list{display:flex;flex-direction:column;gap:6px;overflow:auto}.item{text-align:left}.item small{display:block;color:var(--muted);margin-top:3px}.item.active{background:#6aa7ff;color:#02030a}.check{display:flex;align-items:center;gap:8px}.check input{width:auto}dialog{width:min(520px,calc(100vw - 24px));border:1px solid #fff2;border-radius:10px;background:#092553;color:var(--text);padding:20px}dialog::backdrop{background:#000b}@media(max-width:1180px){.layout{grid-template-columns:1fr}.rail{order:3;max-height:260px}}@media(max-width:640px){body{padding:8px;align-items:start}.device{border-radius:16px;padding:12px}.head,.top{align-items:stretch;flex-direction:column}.board{grid-template-columns:repeat(5,52px);grid-auto-rows:52px;gap:8px}.cell{width:52px;height:52px}.pick{flex-direction:column}}

/* Admin console */
.admin-body{align-items:flex-start;padding:16px;background:linear-gradient(180deg,#050812 0,#07131c 46%,#02040a 100%)}
.admin-shell{min-height:calc(100vh - 32px);border-radius:16px;padding:14px 16px 18px}
.admin-head{border-bottom:1px solid #ffffff1a;padding-bottom:10px}
.admin-nav{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.admin-nav .active{background:#d9ecff;color:#05132a;border-color:#d9ecff}
.admin-login{max-width:430px;margin:48px auto;border-radius:8px}
.admin-grid{display:grid;grid-template-columns:340px minmax(430px,1fr) 310px;gap:14px;align-items:stretch;min-height:calc(100vh - 120px)}
.admin-left.panel,.admin-right.panel,.analysis-panel,.config-page{border-radius:8px;background:#05327a}
.admin-left{display:flex;flex-direction:column;gap:10px;min-height:0}
.admin-panel-head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px;margin-bottom:10px}
.admin-panel-head h3,.admin-left h3,.admin-right h3,.host-block h3{margin:0 0 4px}
.tiny{font-size:12px;line-height:1.35}
.session-list,.user-list{display:flex;flex-direction:column;gap:6px;overflow:auto;min-height:0}
.session-list{flex:1;max-height:calc(100vh - 360px);padding-right:2px}
.session-row,.user-row{display:grid;grid-template-columns:22px 1fr;gap:8px;align-items:flex-start;border:1px solid #001f4c;background:#062b66;border-radius:6px;padding:8px;transition:background .15s,border-color .15s}
.session-row.active,.session-row.selected,.user-row.active{background:#0b4b98;border-color:#7fb4ff}
.session-row input,.user-row input{width:16px;height:16px;margin-top:2px;accent-color:#ffcf33}
.session-main{border:0;background:transparent;color:var(--text);padding:0;text-align:left;cursor:pointer;min-width:0}
.session-main b,.user-row b{display:block;font-size:13px;line-height:1.25;font-weight:700}
.session-main small,.user-row small{display:block;color:var(--muted);font-size:12px;line-height:1.35;margin-top:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.host-block{border-top:1px solid #ffffff1a;padding-top:10px;margin-top:auto}
.meter-row{display:flex;justify-content:space-between;gap:10px;font-size:12px;color:var(--muted);margin-top:7px}
.meter-row b{color:var(--text);font-weight:700;text-align:right}
.meter{height:8px;background:#031b42;border:1px solid #001f4c;border-radius:999px;overflow:hidden;margin-top:4px}
.meter i{display:block;height:100%;width:0;background:linear-gradient(90deg,#4dd7a7,#ffcf33,#ff6a3d);transition:width .3s}
.host-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:10px}
.host-grid div{background:#062b66;border:1px solid #001f4c;border-radius:6px;padding:7px}
.host-grid span{display:block;color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:0}
.host-grid b{display:block;font-size:14px;margin-top:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.admin-main{display:flex;flex-direction:column;gap:12px;min-width:0}
.admin-score{border-radius:8px;padding:10px 14px;gap:18px;justify-content:center}
.admin-board-wrap{border-radius:8px;padding:16px;min-height:360px;align-items:center}
.admin-board{grid-template-columns:repeat(5,64px);grid-auto-rows:64px;gap:10px}
.admin-board .cell{position:relative;display:flex;align-items:center;justify-content:center;font-weight:800;color:#05214f;transition:background .12s,box-shadow .12s,transform .12s}
.admin-board .cell.heat{background:rgba(255,122,42,var(--heat));border-color:#ffd27a;color:#190b00;text-shadow:0 1px 0 #ffffff70}
.admin-board .cell.heat.active{box-shadow:0 0 0 3px #fff inset,0 0 16px #ffcf33cc,0 8px 16px #0008}
.replay-controls{display:grid;grid-template-columns:auto auto minmax(120px,1fr) 92px;gap:8px;align-items:center}
.replay-controls .check{justify-self:start;background:#05327a;border:1px solid #002f6e;border-radius:6px;padding:8px 10px}
.replay-controls select{height:38px}
.admin-status{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px;border-radius:8px}
.admin-status div{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.analysis-panel{min-height:160px}
.compact-pre{max-height:180px;margin-top:12px}
.config-page{width:min(900px,100%);margin:20px auto}
.config-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.config-grid .wide{grid-column:1/-1}
.config-page textarea{min-height:210px;resize:vertical}
@media(max-width:1280px){.admin-grid{grid-template-columns:320px minmax(420px,1fr)}.admin-right{grid-column:1/-1}.user-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));max-height:240px}.session-list{max-height:calc(100vh - 350px)}}
@media(max-width:900px){.admin-grid{grid-template-columns:1fr}.admin-left,.admin-right{min-height:auto}.session-list{max-height:360px}.admin-score,.admin-status,.replay-controls,.config-grid{grid-template-columns:1fr}.user-list{grid-template-columns:1fr}.admin-board{grid-template-columns:repeat(5,52px);grid-auto-rows:52px;gap:8px}.admin-board-wrap{min-height:300px}.admin-head{align-items:stretch;flex-direction:column}.admin-nav{justify-content:flex-start}}