/* ── Page wrapper ── */
.rk-page {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px 0 64px;
}

/* ── Header ── */
.rk-header {
    border-bottom: 1px solid var(--bd-0);
    padding: 28px 28px 20px;
}

.rk-header h1 {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 400;
    letter-spacing: -0.01em;
    margin-bottom: 4px;
    color: var(--tx-0);
}

.rk-header-sub {
    font-size: 13px;
    color: var(--tx-2);
}

/* ── Summary strip ──
   Borderless: the header's bottom rule separates it from the strip above,
   and the toolbar's own bottom border closes the zone below, so the strip
   itself carries no horizontal lines — just the --bd-2 hairlines between
   cells. (Previously it had its own top+bottom --bd-0 rules; the top one sat
   flush against the header's border-bottom and read as a doubled line.) */
.rk-summary {
    display: flex;
    padding: 0 28px;
}

.rk-summary-cell {
    flex: 1;
    padding: 18px 20px 16px;
    text-align: center;
    border-right: 1px solid var(--bd-2);
    transition: background 0.12s;
}
.rk-summary-cell:last-child { border-right: none; }
.rk-summary-cell:hover { background: var(--bg-1); }

.rk-summary-number {
    font-family: var(--font-mono);
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--tx-0);
    font-variant-numeric: tabular-nums;
}

.rk-summary-label {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--tx-2);
    margin-top: 4px;
}

/* ── Toolbar: sort pills + native selects, one row ── */
.rk-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    padding: 12px 28px;
    border-bottom: 1px solid var(--bd-2);
}

.rk-selects {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.rk-select {
    font-family: var(--font-sans);
    font-size: 12px;
    font-weight: 500;
    color: var(--tx-1);
    background: var(--bg-2);
    border: 1px solid var(--bd-0);
    border-radius: var(--r-md);
    padding: 6px 28px 6px 10px;
    cursor: pointer;
    transition: var(--transition);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6' fill='none'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%237d8fad' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    max-width: 160px;
}

.rk-select:hover, .rk-select:focus-visible {
    border-color: var(--blue);
    outline: none;
}

.rk-reset {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 600;
    color: var(--blue);
    text-decoration: none;
    white-space: nowrap;
    padding: 6px 4px;
}
.rk-reset:hover { text-decoration: underline; }

.rk-sort-pills {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
}

.rk-sort-pill {
    font-family: var(--font-sans);
    font-size: 11px;
    font-weight: 600;
    padding: 5px 12px;
    border-radius: var(--r-full);
    border: 1px solid var(--bd-0);
    background: var(--bg-2);
    color: var(--tx-1);
    cursor: pointer;
    transition: all 0.12s;
    text-decoration: none;
    display: inline-block;
    white-space: nowrap;
}

.rk-sort-pill:hover {
    border-color: var(--blue);
    color: var(--blue);
    background: var(--blue-light);
}

.rk-sort-pill.active {
    background: var(--blue);
    border-color: var(--blue);
    color: white;
}

/* ── Column headers ── */
.rk-header-row {
    display: grid;
    grid-template-columns: 44px minmax(0,1fr) 80px 64px 84px 110px 56px;
    gap: 4px;
    padding: 8px 28px;
    border-bottom: 1px solid var(--bd-0);
    margin-bottom: 4px;
    /* Match .rk-row's transparent left rank-border inset so column starts
       line up exactly instead of drifting 3px right. */
    border-left: 3px solid transparent;
}

.rk-col-header {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--tx-2);
}

.rk-col-header.center { text-align: center; }

/* ══════════════════════════════════════
   RANKING TABLE
   ══════════════════════════════════════ */
.rk-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 6px 28px 0;
}

/* ── Individual rank row — floating card, matching the World Cup
   leaderboard's per-row card treatment instead of a spreadsheet-style
   continuous list. ── */
.rk-row {
    display: grid;
    grid-template-columns: 44px minmax(0,1fr) 80px 64px 84px 110px 56px;
    align-items: center;
    gap: 4px;
    padding: 12px 16px;
    background: var(--bg-card);
    border: 1px solid var(--bd-0);
    border-left: 3px solid transparent;
    border-radius: var(--r-lg);
    box-shadow: var(--sh-sm);
    transition: border-color 0.15s, box-shadow 0.15s, transform 0.1s;
    text-decoration: none;
    color: inherit;
}

.rk-row:hover {
    border-color: var(--blue);
    box-shadow: var(--sh-md);
    transform: translateY(-1px);
}

/* ── Top 3: medal borders + subtle tints ── */
.rk-row.top-1 {
    background: linear-gradient(to right, rgba(234,179,8,0.08), var(--bg-card) 60%);
    border-left-color: #eab308;
}
.rk-row.top-2 {
    background: linear-gradient(to right, rgba(148,163,184,0.08), var(--bg-card) 60%);
    border-left-color: #94a3b8;
}
.rk-row.top-3 {
    background: linear-gradient(to right, rgba(180,83,9,0.08), var(--bg-card) 60%);
    border-left-color: #b45309;
}

.rk-row.top-1:hover { border-color: #eab308; }
.rk-row.top-2:hover { border-color: #94a3b8; }
.rk-row.top-3:hover { border-color: #b45309; }

/* ── Rank number ── */
.rk-rank {
    font-size: 15px;
    font-weight: 800;
    color: var(--tx-2);
    font-variant-numeric: tabular-nums;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
}

.rk-rank-medal {
    font-size: 20px;
    line-height: 1;
}

/* Agent identity in row */
.rk-agent {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
}

.rk-avatar {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    display: block;
    flex-shrink: 0;
}

.rk-agent-info { min-width: 0; }

.rk-agent-name {
    font-size: 14px;
    font-weight: 700;
    color: var(--tx-0);
    letter-spacing: -0.01em;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.rk-agent-meta {
    font-size: 11px;
    color: var(--tx-2);
    display: flex;
    align-items: center;
    gap: 5px;
    margin-top: 1px;
}

/* Arena Rating tier badge (inline) — seasonal, replaces the retired trust_level L0~L4 badge */
.rk-tier {
    font-family: var(--font-mono);
    text-transform: uppercase;
    font-size: 9px;
    font-weight: 700;
    padding: 1px 6px;
    border-radius: var(--r-full);
    letter-spacing: 0.04em;
    flex-shrink: 0;
}

.rk-tier.challenger {
    background: rgba(255, 77, 109, 0.14);
    color: #FF4D6D;
    border: 1px solid rgba(255, 77, 109, 0.3);
}

.rk-tier.grandmaster {
    background: rgba(185, 131, 255, 0.16);
    color: #B983FF;
    border: 1px solid rgba(185, 131, 255, 0.32);
}

.rk-tier.master {
    background: rgba(155, 93, 229, 0.14);
    color: #9B5DE5;
    border: 1px solid rgba(155, 93, 229, 0.3);
}

.rk-tier.diamond {
    background: rgba(76, 201, 240, 0.14);
    color: #2AA9C4;
    border: 1px solid rgba(76, 201, 240, 0.32);
}

.rk-tier.emerald {
    background: rgba(46, 196, 182, 0.14);
    color: #1F9E92;
    border: 1px solid rgba(46, 196, 182, 0.32);
}

.rk-tier.platinum {
    background: rgba(141, 153, 174, 0.14);
    color: #6B7686;
    border: 1px solid rgba(141, 153, 174, 0.32);
}

.rk-tier.gold {
    background: rgba(242, 183, 5, 0.16);
    color: #B8860B;
    border: 1px solid rgba(242, 183, 5, 0.34);
}

.rk-tier.silver {
    background: var(--bg-3);
    color: var(--tx-2);
    border: 1px solid var(--bd-0);
}

.rk-tier.bronze {
    background: rgba(205, 127, 50, 0.14);
    color: #A9662E;
    border: 1px solid rgba(205, 127, 50, 0.3);
}

.rk-tier.unranked {
    background: var(--bg-3);
    color: var(--tx-3, var(--tx-2));
    border: 1px solid var(--bd-0);
}

/* ── Score column with bar ── */
.rk-score-col {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.rk-overall-score {
    font-size: 18px;
    font-weight: 800;
    letter-spacing: -0.03em;
    font-variant-numeric: tabular-nums;
    color: var(--tx-0);
    line-height: 1;
}
.rk-score-unit {
    font-size: 10px;
    font-weight: 500;
    color: var(--tx-3);
    margin-left: 2px;
    letter-spacing: 0;
    vertical-align: middle;
}

.rk-score-bar-track {
    width: 64px;
    height: 3px;
    background: var(--bd-0);
    border-radius: 99px;
    overflow: hidden;
}

.rk-score-bar-fill {
    height: 100%;
    border-radius: 99px;
    background: var(--blue);
    transition: width 0.3s ease;
    min-width: 2px;
}

.rk-row.top-1 .rk-score-bar-fill { background: #eab308; }
.rk-row.top-2 .rk-score-bar-fill { background: #94a3b8; }
.rk-row.top-3 .rk-score-bar-fill { background: #b45309; }

/* Accuracy column */
.rk-accuracy {
    text-align: center;
    font-size: 14px;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

/* Matches the landing page's agent-card accuracy convention: green only for
   a genuinely strong rate, amber for mid, and — instead of an alarming red —
   muted grey for a weak rate, same as "no data yet". */
.rk-accuracy.high { color: var(--up); }
.rk-accuracy.mid  { color: var(--warn); }
.rk-accuracy.low  { color: var(--tx-2); }
.rk-accuracy.na   { color: var(--tx-2); }

/* Activity column */
.rk-activity {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1px;
}

.rk-activity-line {
    font-size: 12px;
    font-weight: 600;
    color: var(--tx-1);
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}

.rk-activity-sub {
    font-size: 10px;
    color: var(--tx-2);
    font-weight: 500;
    white-space: nowrap;
}
.rk-sample-warn {
    font-size: 9px; font-weight: 700; color: #f59e0b;
    background: rgba(245,158,11,.1); border-radius: 3px;
    padding: 1px 4px; margin-top: 2px; white-space: nowrap;
}
.rk-sample-limited {
    font-size: 9px; color: var(--tx-2);
    margin-top: 1px;
}

/* Strengths column — top-scoring dimension tags */
.rk-strengths {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    gap: 4px;
    min-width: 0;
}

.rk-strength-tag {
    font-size: 9px;
    font-weight: 600;
    color: var(--tx-2);
    background: var(--bg-3);
    border: 1px solid var(--bd-0);
    border-radius: var(--r-full);
    padding: 2px 7px;
    white-space: nowrap;
    text-decoration: none;
}

/* Trend column */
.rk-trend {
    text-align: center;
    font-family: var(--font-mono);
    text-transform: uppercase;
    font-size: 11px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 2px;
    padding: 3px 8px;
    border-radius: var(--r-full);
}

.rk-trend.rising {
    background: var(--up-light);
    color: var(--up);
}

.rk-trend.falling {
    background: var(--dn-light);
    color: var(--dn);
}

.rk-trend.stable {
    background: var(--bg-3);
    color: var(--tx-2);
}

/* ── Empty state ── */
.rk-empty {
    padding: 64px 28px;
    text-align: center;
    color: var(--tx-2);
}

.rk-empty-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.rk-empty-title {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 400;
    color: var(--tx-1);
    margin-bottom: 8px;
}

.rk-empty-sub {
    font-size: 13px;
    color: var(--tx-2);
}

/* ── Responsive ── */
@media (max-width: 700px) {
    .rk-row,
    .rk-header-row {
        grid-template-columns: 32px minmax(0,1fr) 52px 44px;
        gap: 8px;
        padding: 12px 14px;
    }
    .rk-row .rk-score-bar-track { width: 40px; }
    .rk-row .rk-avatar { width: 32px; height: 32px; }
    .rk-row .rk-agent { gap: 8px; }
    .rk-row .rk-activity,
    .rk-row .rk-trend,
    .rk-row .rk-strengths,
    .rk-header-row .rk-col-header:nth-child(5),
    .rk-header-row .rk-col-header:nth-child(6),
    .rk-header-row .rk-col-header:nth-child(7) {
        display: none;
    }
    .rk-header { padding: 24px 16px 16px; }
    .rk-controls { padding: 10px 16px; }
    .rk-summary { flex-wrap: wrap; padding: 0 16px; }
    .rk-summary-cell { flex: 1 1 50%; border-bottom: 1px solid var(--bd-2); }
    .rk-summary-cell:nth-child(2) { border-right: none; }
    .rk-summary-cell:nth-last-child(-n+2) { border-bottom: none; }
    .rk-list { padding: 6px 16px 0; }
}

@media (max-width: 480px) {
    .rk-sort-pills { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 2px; }
}

/* Locale switching */
body.lang-en .lang-zh { display: none !important; }
body.lang-en .lang-en { display: inline !important; }

/* ══════════════════════════════════════
   PODIUM GLORY CARDS
   ══════════════════════════════════════ */
.rk-podium {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    padding: 20px 28px 8px;
}

/* Centered vertical stack — matches worldcup_leaderboard.html's
   .lb-podium-card layout (medal → avatar → name → meta → score →
   accuracy, all centered) instead of the old two-column grid. The
   gold/silver/bronze tint backgrounds below are /rankings' own — WC's
   version has no background tint, just the top-border accent. */
.rk-podium-card {
    border-radius: 12px;
    padding: 16px 14px;
    border: 1px solid var(--bd-0);
    background: var(--bg-2);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform 0.1s, box-shadow 0.15s;
    text-decoration: none;
    color: inherit;
}

.rk-podium-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--sh-md);
}

.rk-podium-medal { font-size: 24px; margin-bottom: 8px; line-height: 1; }

.rk-podium-avatar { width: 36px; height: 36px; border-radius: 9px; margin-bottom: 8px; }

/* Gold/silver/bronze — flat low-opacity tint + coloured top border,
   unchanged from /rankings' existing treatment. */
.rk-podium-card.gold {
    border-color: #eab308;
    border-top: 3px solid #eab308;
    background: rgba(234,179,8,.06);
}

.rk-podium-card.silver {
    border-color: #94a3b8;
    border-top: 3px solid #94a3b8;
    background: rgba(148,163,184,.06);
}

.rk-podium-card.bronze {
    border-color: #cd7c2a;
    border-top: 3px solid #cd7c2a;
    background: rgba(180,83,9,.06);
}

.rk-podium-name {
    font-size: 13px;
    font-weight: 700;
    color: var(--tx-0);
    letter-spacing: -0.01em;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 100%;
}

.rk-podium-meta {
    font-size: 10px;
    color: var(--tx-2);
    margin-top: 2px;
}

/* Score */
.rk-podium-score {
    font-size: 20px;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1;
    font-variant-numeric: tabular-nums;
    display: flex;
    align-items: baseline;
    gap: 3px;
    justify-content: center;
    margin-top: 8px;
    color: var(--blue);
}
.rk-podium-score-lbl {
    font-size: 10px;
    font-weight: 400;
    color: var(--tx-3);
    letter-spacing: 0;
}
.rk-podium-card.gold   .rk-podium-score { color: #eab308; }
.rk-podium-card.silver .rk-podium-score { color: #94a3b8; }
.rk-podium-card.bronze .rk-podium-score { color: #cd7c2a; }

/* Accuracy */
.rk-podium-accuracy {
    font-size: 11px;
    color: var(--tx-2);
    margin-top: 2px;
}

/* Mobile: single column */
@media (max-width: 600px) {
    .rk-podium {
        grid-template-columns: 1fr;
        padding: 16px 16px 4px;
        gap: 10px;
    }
}

/* ══════════════════════════════════════
   COLUMN HEADER TOOLTIPS
   ══════════════════════════════════════ */
.rk-th-tip {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    cursor: help;
}

.rk-tip-icon {
    width: 14px;
    text-transform: none;
    line-height: 1;
    height: 14px;
    border-radius: 50%;
    background: var(--blue);
    color: var(--bg-0);
    font-size: 9px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-style: normal;
}

.rk-tip-box {
    position: absolute;
    text-transform: none;
    bottom: calc(100% + 8px);
    left: 0;
    background: var(--bg-1);
    border: 1px solid var(--bd-0);
    border-radius: 10px;
    padding: 10px 12px;
    font-size: 11px;
    color: var(--tx-1);
    line-height: 1.6;
    white-space: normal;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.15s;
    box-shadow: 0 8px 24px rgba(0,0,0,.3);
    z-index: 200;
    min-width: 180px;
}

/* Arrow */
.rk-tip-box::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 16px;
    border: 5px solid transparent;
    border-top-color: var(--bd-0);
}

.rk-th-tip:hover .rk-tip-box {
    opacity: 1;
}

/* Tooltip content styles */
.rk-tip-title {
    font-weight: 700;
    color: var(--tx-0);
    margin-bottom: 6px;
    font-size: 11px;
}

.rk-tip-dim-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 1px 0;
}

.rk-tip-dim-name { color: var(--tx-2); font-size: 10px; }
.rk-tip-dim-weight { color: var(--blue); font-weight: 700; font-size: 10px; flex-shrink: 0; }
.rk-tip-dim-note { color: var(--tx-2); font-size: 10px; margin-top: 4px; padding-top: 4px; border-top: 1px solid var(--bd-2); }

/* Trend tooltip: anchor right */
.rk-tip-box.rk-tip-right {
    left: auto;
    right: 0;
}
.rk-tip-box.rk-tip-right::after {
    left: auto;
    right: 16px;
}

/* Mobile: hide tooltips */
@media (max-width: 700px) {
    .rk-tip-box {
        display: none;
    }
}

/* ══════════════════════════════════════
   SCORE CELL HOVER DIMENSION CARD
   ══════════════════════════════════════ */
.rk-score-col {
    position: relative;
}

.rk-score-col.rk-th-tip {
    cursor: default;
}

.rk-tip-box.rk-score-tip {
    min-width: 200px;
    left: 50%;
    transform: translateX(-50%);
}

.rk-tip-box.rk-score-tip::after {
    left: 50%;
    transform: translateX(-50%);
}

.rk-score-tip__title {
    font-weight: 700;
    color: var(--tx-0);
    font-size: 11px;
    margin-bottom: 8px;
}

.rk-score-tip__rows {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.rk-score-tip__row {
    display: flex;
    align-items: center;
    gap: 6px;
}

.rk-score-tip__label {
    font-size: 10px;
    color: var(--tx-2);
    width: 64px;
    flex-shrink: 0;
}

.rk-score-tip__bar-track {
    flex: 1;
    height: 4px;
    background: var(--bg-0, #0f1117);
    border-radius: 99px;
    overflow: hidden;
}

.rk-score-tip__bar-fill {
    height: 100%;
    background: var(--blue);
    border-radius: 99px;
}

.rk-score-tip__val {
    font-size: 10px;
    font-weight: 700;
    color: var(--blue);
    width: 24px;
    text-align: right;
    flex-shrink: 0;
    font-variant-numeric: tabular-nums;
}

.rk-score-tip__footer {
    margin-top: 6px;
    padding-top: 6px;
    border-top: 1px solid var(--bd-2);
    font-size: 10px;
    color: var(--tx-2);
}

/* Hide score hover card on mobile */
@media (max-width: 700px) {
    .rk-score-col.rk-th-tip .rk-tip-icon,
    .rk-score-col.rk-th-tip .rk-tip-box {
        display: none;
    }
}