/* =========================================================
 * Chia nhóm ngẫu nhiên (dùng chung khung với lucky_modern.css)
 * ========================================================= */
.group-tool .top-tool .left-tool{width:52%;position:relative}
.group-tool .top-tool .right-tool{width:calc(48% - 40px);margin-left:40px}
@media (max-width:651px){.group-tool .top-tool .left-tool,.group-tool .top-tool .right-tool{width:100%;margin-left:0}}
.group-tool .top-tool.is-collapsed .left-tool{width:100%}

.gt-board{background:#fff;border:1px solid #e7e7ea;border-radius:18px;padding:18px;margin-top:10px;box-shadow:0 1px 2px rgba(16,24,40,.04),0 12px 32px -8px rgba(16,24,40,.10)}
.gt-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:6px 12px;padding:0 4px 14px;margin-bottom:14px;border-bottom:1px solid #f0f0f2;padding-right:150px}
.gt-head__title{font-size:20px;font-weight:700;color:#1f2328}
.gt-head__meta{font-size:13px;color:#6b7280}
.gt-badge{display:inline-block;padding:1px 8px;border-radius:999px;background:#fff4d6;color:#a16207;font-weight:600;font-size:12px}
@media (max-width:651px){.gt-head{padding-right:56px}}

.gt-result{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px;min-height:180px}
.gt-card{border:1px solid #ececf0;border-radius:14px;background:#fff;overflow:hidden;border-top:4px solid var(--gc,#D7382E)}
.gt-card__head{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px 12px;background:color-mix(in srgb,var(--gc,#D7382E) 8%,#fff)}
.gt-card__name{font-weight:700;color:var(--gc,#D7382E);font-size:15px}
.gt-card__count{font-size:12px;font-weight:600;color:#6b7280;background:#fff;border:1px solid #ececf0;border-radius:999px;padding:1px 8px}
.gt-card__list{margin:0;padding:8px 12px 12px 34px}
.gt-card__list li{list-style:decimal !important;padding:4px 0;font-size:15px;color:#1f2328;border-bottom:1px dashed #f0f0f2;word-break:break-word}
.gt-card__list li:last-child{border-bottom:0}
.gt-card__list li.is-leader{font-weight:700}
.gt-lead{display:inline-block;margin-left:6px;white-space:nowrap;padding:0 7px;border-radius:999px;background:var(--gc,#D7382E);color:#fff;font-size:11px;font-weight:700;vertical-align:1px}
.gt-result.is-shuffling .gt-card__list li{color:#9ca3af}
.gt-card.is-in{animation:gtIn .45s cubic-bezier(.2,1.2,.4,1) both}
@keyframes gtIn{from{opacity:0;transform:translateY(10px) scale(.97)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.gt-card.is-in{animation:none}}

.gt-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.gt-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 18px;border:1px solid #e7e7ea;border-radius:12px;background:#fff;color:#1f2328;font-size:15px;font-weight:700;cursor:pointer;transition:background .15s,border-color .15s,color .15s,transform .05s}
.gt-btn:hover{border-color:#D7382E;color:#D7382E}
.gt-btn:active{transform:translateY(1px)}
.gt-btn--primary{flex:1;background:#D7382E;border-color:#D7382E;color:#fff;box-shadow:0 6px 16px -6px rgba(215,56,46,.6)}
.gt-btn--primary:hover{background:#bf2f26;color:#fff}

/* cấu hình */
.group-tool .areaSetup{height:220px}
.gt-seg{display:flex;gap:6px;padding:4px;background:#f3f4f6;border-radius:12px;margin-bottom:10px}
.gt-seg label{flex:1;margin:0 !important;cursor:pointer;width:auto !important;text-transform:none !important}
.wrapper-tool .wrapform .option .gt-seg input{position:absolute;opacity:0;pointer-events:none;width:1px !important;height:1px !important;padding:0 !important;border:0 !important;margin:0}
.gt-seg label{position:relative}
.gt-seg span{display:block;text-align:center;padding:9px 8px;border-radius:9px;font-size:14px;font-weight:600;color:#6b7280;transition:all .15s}
.gt-seg input:checked + span{background:#fff;color:#D7382E;box-shadow:0 1px 3px rgba(0,0,0,.12)}
.gt-seg input:focus-visible + span{outline:2px solid #D7382E}
.gt-num{display:flex;align-items:center;gap:8px}
.gt-num__btn{width:44px;height:44px;border:1px solid #e7e7ea;border-radius:10px;background:#fff;font-size:20px;font-weight:700;color:#1f2328;cursor:pointer}
.gt-num__btn:hover{border-color:#D7382E;color:#D7382E}
.wrapper-tool .wrapform .option .gt-num input{width:90px;text-align:center;font-size:18px;font-weight:700}
.gt-num__unit{color:#6b7280;font-size:14px;font-weight:600}
.gt-checks{display:flex;flex-direction:column;gap:8px}
.gt-check{display:flex !important;align-items:center;gap:10px;margin:0 !important;font-size:14px !important;font-weight:500 !important;color:#1f2328 !important;cursor:pointer}
.gt-check input{width:18px !important;height:18px !important;padding:0 !important;accent-color:#D7382E}

/* toàn màn hình */
.group-tool .left-tool.is-fs{overflow:auto;padding:70px 3vw 40px;display:block}
.group-tool .left-tool.is-fs .gt-board{max-width:1400px;margin:0 auto;border:0;box-shadow:none;background:rgba(255,255,255,.92)}
.group-tool .left-tool.is-fs .gt-head__title{font-size:28px}
.group-tool .left-tool.is-fs .gt-result{grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
.group-tool .left-tool.is-fs .gt-card__name{font-size:20px}
.group-tool .left-tool.is-fs .gt-card__list li{font-size:20px;padding:6px 0}
.group-tool .left-tool.is-fs .gt-btn:not(.gt-btn--primary){display:none}
.group-tool .fs-hint{position:static;margin-top:10px}
.group-tool .top-tool .left-tool > .gt-board{flex:1 1 auto;width:100%;min-width:0;box-sizing:border-box;align-self:flex-start}