:root {
    --bg: #f5f6f8;
    --panel: #ffffff;
    --border: #dde1e6;
    --text: #24292f;
    --text-dim: #57606a;
    --primary: #1f6feb;
    --danger: #cf222e;
    --warn-bg: #fff8c5;
    --warn-border: #d4a72c;
    --ok: #1a7f37;
    --tag-topk: #ddf4ff;
    --tag-low: #fff1e5;
}

#tool {
    color: var(--text);
    font-size: 14px;
    line-height: 1.6;
    width: 60%;
    margin: 0 0 30px;
    padding-bottom: 64px;
}
#tool *, #tool *::before, #tool *::after { box-sizing: border-box; }
#tool * { margin-left: 0; margin-right: 0; }

.panel {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px 20px;
    margin-bottom: 16px;
}
.panel-title { font-weight: 600; margin-bottom: 12px; }
.row-between { display: flex; justify-content: space-between; align-items: center; }
.row-gap { display: flex; gap: 8px; flex-wrap: wrap; }

.hint { color: var(--text-dim); font-size: 12px; margin-top: 6px; }

.step1-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.step1-row label { flex: 1; min-width: 280px; }
#n-input { width: 80px; padding: 6px 8px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px; }

.tournament-card {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 14px 16px;
    margin-bottom: 14px;
    background: #fafbfc;
}
.card-head { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; flex-wrap: wrap; }
.card-index {
    background: var(--primary); color: #fff; border-radius: 50%;
    width: 24px; height: 24px; display: inline-flex; align-items: center; justify-content: center;
    font-size: 12px; flex: none;
}
.card-label-input {
    flex: 1; min-width: 200px; padding: 5px 8px;
    border: 1px solid var(--border); border-radius: 6px; font-size: 13px;
}
.slots-row { display: flex; gap: 12px; flex-wrap: wrap; }

.slot {
    flex: 1; min-width: 260px;
    border: 2px dashed var(--border); border-radius: 8px;
    padding: 12px; text-align: center; cursor: pointer;
    transition: border-color .15s, background .15s;
    background: #fff;
}
.slot:hover { border-color: var(--primary); }
.slot.dragover { border-color: var(--primary); background: var(--tag-topk); }
.slot.filled { border-style: solid; cursor: default; }
.slot.invalid { border-color: var(--danger); }
.slot-type { font-weight: 600; font-size: 13px; margin-bottom: 6px; }
.slot-msg { font-size: 12px; color: var(--text-dim); word-break: break-all; }
.slot-msg.ok { color: var(--ok); }
.slot-msg.err { color: var(--danger); }
.slot input[type="file"] { display: none; }
.slot-actions { margin-top: 8px; display: flex; gap: 8px; justify-content: center; }
.slot-actions .btn { font-size: 12px; padding: 2px 10px; }

.progress-line { padding: 4px 0; font-size: 13px; }
.progress-line .status { margin-left: 8px; }
.status-ok { color: var(--ok); }
.status-err { color: var(--danger); }
.status-warn { color: var(--warn-border); }

.overview-grid { display: flex; flex-wrap: wrap; gap: 12px; }
.stat-item {
    background: #fafbfc; border: 1px solid var(--border); border-radius: 8px;
    padding: 10px 16px; min-width: 130px;
}
.stat-item .num { font-size: 20px; font-weight: 700; }
.stat-item .lbl { font-size: 12px; color: var(--text-dim); }

.blocked-box {
    margin-top: 12px; padding: 10px 14px;
    border: 1px solid var(--danger); border-radius: 8px; background: #fff5f5;
    font-size: 13px;
}
.blocked-box ul { margin: 6px 0 0 20px; }

.result-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.toolbar-right { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.quick-controls { display: flex; gap: 8px; }
.tabs { display: flex; flex-wrap: wrap; gap: 6px; }
.tab-btn {
    border: 1px solid var(--border); background: #fff; border-radius: 20px;
    padding: 5px 16px; cursor: pointer; font-size: 13px;
}
.tab-btn.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.topk-control { display: flex; align-items: center; gap: 8px; font-size: 13px; }
#topk-input { width: 64px; padding: 4px 6px; border: 1px solid var(--border); border-radius: 6px; }
.chk { display: inline-flex; align-items: center; gap: 4px; cursor: pointer; }
#tool #team-scope { display: flex; flex-wrap: wrap; gap: 6px 16px; max-height: 180px; overflow-y: auto; margin: 8px 0; }
#tool #team-scope .chk { font-size: 13px; }
#tool #team-scope input[type="checkbox"] { margin: 0; }

.tab-summary { font-size: 13px; color: var(--text-dim); margin-bottom: 12px; }

.table-wrap { overflow-x: auto; margin-bottom: 8px; border: 1px solid var(--border); border-radius: 8px; }
#tool table { border-collapse: collapse; width: 100%; font-size: 13px; background: #fff; }
#tool th, #tool td { border-bottom: 1px solid var(--border); padding: 6px 10px; text-align: left; white-space: nowrap; }
#tool th { background: #f0f2f4; cursor: pointer; user-select: none; position: sticky; top: 0; }
#tool th.no-sort { cursor: default; }
#tool tr:hover td { background: #fafbfc; }
#tool td.num, #tool th.num { text-align: right; }

.tag { display: inline-block; padding: 0 8px; border-radius: 10px; font-size: 12px; }
.tag-topk { background: var(--tag-topk); color: #0969da; }
.tag-low { background: var(--tag-low); color: #bc4c00; }
.tag-win { color: var(--ok); font-weight: 600; }
.tag-lose { color: var(--text-dim); }

.filters { display: flex; gap: 10px; flex-wrap: wrap; margin: 10px 0; font-size: 13px; }
.filters select, .filters input {
    padding: 4px 8px; border: 1px solid var(--border); border-radius: 6px; font-size: 13px;
}

#tab-content { text-align: left; }
.subsection { margin-top: 18px; text-align: left; }
.subsection-title { font-weight: 600; margin-bottom: 8px; text-align: left; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
#tool .blocked-box ul { margin-left: 20px; }
#tool .warn-list ul { margin-left: 18px; }
.collapse-head { cursor: pointer; user-select: none; display: inline-flex; align-items: center; gap: 4px; }
.collapse-head:hover { color: var(--primary); }
.collapse-arrow { display: inline-block; width: 1em; text-align: center; color: var(--text-dim); font-size: 12px; }

.pager { display: flex; gap: 8px; align-items: center; margin: 8px 0; font-size: 13px; }

.warn-list { border: 1px solid var(--warn-border); background: var(--warn-bg); border-radius: 8px; padding: 10px 14px; font-size: 13px; margin-top: 10px; }
.warn-list ul { margin: 4px 0 0 18px; }

.log-body {
    max-height: 360px; overflow: auto; background: #fafbfc;
    border: 1px solid var(--border); border-radius: 8px; padding: 10px 14px;
    font-size: 12px; white-space: pre-wrap;
}
.log-line-error { color: var(--danger); }
.log-line-warn { color: #9a6700; }
.log-line-info { color: var(--text-dim); }

.toast {
    position: fixed; bottom: 32px; left: 50%; transform: translateX(-50%);
    background: #24292f; color: #fff; padding: 10px 24px; border-radius: 8px;
    font-size: 13px; z-index: 999; max-width: 80vw;
}

.page-nav { margin-top: 10px; margin-bottom: 16px; display: flex; gap: 8px; }
.page-nav a {
    display: inline-block; padding: 4px 14px; border-radius: 16px;
    border: 1px solid var(--border); color: var(--text); text-decoration: none; font-size: 13px;
    background: #fff;
}
.page-nav a.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.page-nav a:hover:not(.active) { background: #f0f2f4; }

.btn-top {
    position: fixed; right: 24px; bottom: 24px; z-index: 99;
    border: 1px solid var(--border); background: var(--panel); color: var(--text);
    border-radius: 22px; padding: 8px 16px; font-size: 13px; cursor: pointer;
    box-shadow: 0 2px 8px rgba(0,0,0,.12);
}
.btn-top:hover { background: #f0f2f4; }

@media (orientation: portrait), (max-width: 820px) {
    #tool { width: 90%; font-size: 13px; padding-bottom: 80px; }
    #tool .panel { padding: 12px; }
    #tool .step1-row label, #tool .card-label-input { min-width: 0; }
    #tool .slots-row { flex-direction: column; }
    #tool .slot { min-width: 0; }
    #tool .slot-actions { justify-content: flex-start; flex-wrap: wrap; }
    #tool .result-toolbar { flex-direction: column; align-items: stretch; }
    #tool .toolbar-right, #tool .quick-controls, #tool .tabs { width: 100%; flex-wrap: wrap; }
    #tool .step1-row, #tool .card-head, #tool .filters, #tool .pager, #tool .page-nav, #tool .overview-grid { flex-wrap: wrap; }
    #tool .subsection-title, #tool .panel-title.row-between { flex-direction: column; align-items: flex-start; }
    #tool .subsection-title > *, #tool .panel-title.row-between > * { margin-top: 0; margin-bottom: 0; }
    #tool .row-gap { flex-wrap: wrap; }
    #tool .table-wrap { max-width: 100%; }
    #tool table { font-size: 12px; }
    #tool #overview-panel { padding: 8px 10px; margin-bottom: 10px; }
    #tool #overview-panel .panel-title { margin-bottom: 6px; font-size: 13px; }
    #tool .overview-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px; }
    #tool .stat-item { min-width: 0; padding: 4px 8px; border-radius: 6px; display: flex; align-items: baseline; justify-content: space-between; gap: 4px; }
    #tool .stat-item > * { margin-top: 0; margin-bottom: 0; }
    #tool .stat-item .num { font-size: 14px; line-height: 1.3; white-space: nowrap; }
    #tool .stat-item .lbl { font-size: 11px; line-height: 1.3; text-align: right; }
    #tool .blocked-box { margin-top: 8px; padding: 6px 8px; font-size: 11px; }
    #tool .blocked-box ul { margin-left: 14px; margin-top: 4px; }
    #tool .log-body { max-height: 240px; }
    #tool .btn-top { right: 12px; bottom: 12px; padding: 6px 12px; }
    #tool .toast { max-width: 90vw; }
}