:root{
  --bg:#f6f7fb; --panel:#ffffff; --ink:#1a1a1a; --muted:#6a6f78;
  --line:#e5e7eb; --accent:#e07b00; --accent-soft:#fff1de;
  --ok:#10b981; --warn:#f59e0b; --bad:#dc2626; --info:#2563eb;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;background:var(--bg);color:var(--ink);font-size:15px;line-height:1.45}
.wrap{max-width:1320px;margin:0 auto;padding:24px}
header.app{background:linear-gradient(135deg,#e07b00 0%,#c46300 100%);color:#fff;padding:14px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;box-shadow:0 2px 10px rgba(0,0,0,.08)}
header.app .brand{display:flex;align-items:center;gap:14px}
header.app .brand-mark{height:54px;background:#fff;border-radius:10px;display:flex;align-items:center;justify-content:center;padding:6px 10px;flex-shrink:0}
header.app .brand-mark img{height:42px;width:auto;display:block;object-fit:contain}
header.app h1{margin:0;font-size:18px;font-weight:700;letter-spacing:.01em}
header.app .who{font-size:13px;opacity:.95;display:flex;gap:14px;align-items:center}
header.app .who a{color:#fff;text-decoration:underline;text-underline-offset:3px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:20px;margin-bottom:20px;box-shadow:0 1px 0 rgba(0,0,0,.02)}
h2{font-size:20px;margin:0 0 14px;font-weight:700}
h3{font-size:16px;margin:0 0 10px;font-weight:700}
.muted{color:var(--muted);font-size:13px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 16px;border:1px solid var(--line);background:#fff;border-radius:10px;font-weight:600;cursor:pointer;font-size:14px;color:var(--ink);transition:all .15s}
.btn:hover{border-color:#cfd3d8;background:#fafbfc}
.btn.primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn.primary:hover{background:#c46300;border-color:#c46300}
.btn.ghost{background:transparent}
.btn.danger{background:var(--bad);color:#fff;border-color:var(--bad)}
.btn.ok{background:var(--ok);color:#fff;border-color:var(--ok)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.row{display:flex;gap:12px;flex-wrap:wrap}
.grid{display:grid;gap:16px}
.grid-2{grid-template-columns:1fr 1fr}
.grid-3{grid-template-columns:repeat(3,1fr)}
@media (max-width:900px){.grid-2,.grid-3{grid-template-columns:1fr}}

/* login */
.login-card{max-width:420px;margin:80px auto;padding:32px}
.login-card label{display:block;margin:14px 0 6px;font-weight:600;font-size:13px;color:var(--muted)}
.login-card input{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:10px;font-size:15px;background:#fff}
.login-card input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(224,123,0,.15)}
.login-card .error{color:var(--bad);background:#fee;border:1px solid #fcc;padding:10px 12px;border-radius:8px;margin-top:12px;font-size:13.5px}

/* state pill */
.pill{display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.04em}
.pill.idle{background:#eee;color:#555}
.pill.talk{background:#dbeafe;color:#1d4ed8}
.pill.qna{background:#fef3c7;color:#92400e}
.pill.done{background:#dcfce7;color:#166534}

/* timer */
.timer-block{display:flex;align-items:center;gap:18px}
.timer{font-variant-numeric:tabular-nums;font-weight:800;font-size:48px;line-height:1;letter-spacing:.01em}
.timer.ok{color:var(--ok)} .timer.warn{color:var(--warn)} .timer.bad{color:var(--bad)}
.timer.overrun{animation:flashOverrun 1s infinite alternate}
@keyframes flashOverrun{from{color:var(--bad)} to{color:#7a1010}}
.progress{flex:1;height:12px;background:#eef0f3;border-radius:6px;overflow:hidden}
.progress > div{height:100%;transition:width .9s linear}
.progress.talk > div{background:var(--info)}
.progress.qna > div{background:var(--warn)}

/* slider */
.score-row{display:grid;grid-template-columns:1fr 56px;gap:14px;align-items:center;padding:11px 0;border-bottom:1px dashed var(--line)}
.score-row:last-child{border-bottom:none}
.score-row .crit{font-size:14px;line-height:1.35}
.score-row .val{font-weight:800;font-size:22px;color:var(--accent);text-align:right;font-variant-numeric:tabular-nums}
input[type=range]{width:100%;-webkit-appearance:none;appearance:none;height:6px;background:linear-gradient(to right,var(--accent) 0%,var(--accent) 0%,#e5e7eb 0%,#e5e7eb 100%);border-radius:3px;outline:none}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:22px;height:22px;background:var(--accent);border-radius:50%;border:3px solid #fff;box-shadow:0 1px 4px rgba(0,0,0,.2);cursor:pointer}
input[type=range]::-moz-range-thumb{width:22px;height:22px;background:var(--accent);border-radius:50%;border:3px solid #fff;cursor:pointer}
.scale-marks{display:flex;justify-content:space-between;font-size:10.5px;color:var(--muted);margin-top:3px;padding:0 1px}

/* admin */
.participant-list{max-height:520px;overflow-y:auto;border:1px solid var(--line);border-radius:10px}
.participant-list .p-item{padding:10px 14px;border-bottom:1px solid var(--line);cursor:pointer;display:grid;grid-template-columns:30px 60px 1fr;gap:10px;align-items:center;font-size:13.5px}
.participant-list .p-item:hover{background:#fafbfc}
.participant-list .p-item.active{background:var(--accent-soft);border-left:4px solid var(--accent);padding-left:10px}
.participant-list .p-item .num{font-weight:700;color:var(--muted)}
.participant-list .p-item .slot{color:var(--muted);font-size:12px;font-variant-numeric:tabular-nums}
.participant-list .p-item .name{font-weight:600}

.kv{display:grid;grid-template-columns:170px 1fr;gap:6px 14px;font-size:13.5px}
.kv > div:nth-child(odd){color:var(--muted);font-weight:600}
.kv > div:nth-child(even){line-height:1.45}

/* results table */
table.results{width:100%;border-collapse:collapse;font-size:13px}
table.results th, table.results td{padding:8px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
table.results th{background:#fafbfc;font-weight:700;color:var(--muted);font-size:11.5px;text-transform:uppercase;letter-spacing:.04em;position:sticky;top:0}
table.results td.num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
table.results tr:hover td{background:#fffbf3}
.grade{display:inline-block;width:30px;height:30px;line-height:30px;text-align:center;font-weight:800;border-radius:7px;font-size:16px;color:#fff}
.grade-2{background:var(--bad)} .grade-3{background:#9ca3af} .grade-4{background:#3b82f6} .grade-5{background:var(--ok)}
.grade-x{background:#eee;color:#9ca3af;font-weight:600;font-size:14px}

/* state banner */
.state-banner{display:flex;align-items:center;gap:14px;padding:14px 18px;background:var(--accent-soft);border:1px solid #f0c997;border-radius:12px;margin-bottom:18px}
.state-banner .n{background:var(--accent);color:#fff;font-weight:800;width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:15px}
.state-banner .who{font-weight:700;font-size:16px}
.state-banner .meta{color:var(--muted);font-size:12.5px}

/* scoreboard helpers */
.section-title{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:700;margin:18px 0 8px}
.saved-flag{font-size:12.5px;color:var(--ok);font-weight:600}
.saved-flag.pending{color:var(--warn)}
.saved-flag.error{color:var(--bad)}