/* ===== Tooltip ===== */
.tooltip-icon {
    display: inline-block;
    margin-left: 5px;
    font-size: 0.8em;
    opacity: 0.6;
    cursor: help;
}

.tooltip {
    position: fixed;
    background: var(--felt-900);
    color: var(--card);
    padding: 10px 15px;
    border-radius: 6px;
    border: 1px solid var(--gold);
    font-size: 0.9em;
    line-height: 1.5;
    max-width: 300px;
    z-index: 10000;
    pointer-events: none;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
    word-wrap: break-word;
}

.tooltip::after {
    content: '';
    position: absolute;
    top: -5px;
    left: 20px;
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-bottom: 5px solid var(--gold);
}

/* ===== 趋势图 ===== */
.charts-wrapper {
    margin-top: 30px;
    display: flex;
    flex-direction: column;
    gap: 26px;
}

.trend-toolbar,
.member-selector-header,
.trend-filter-backdrop {
    display: none;
}

.member-selector {
    width: max-content;
    min-width: fit-content;
    padding: 10px;
    flex-shrink: 0;
}

.member-checkboxes {
    display: flex;
    flex-direction: column;
    gap: 4px;
    align-items: flex-start;
}

.member-checkbox-item {
    display: flex;
    align-items: center;
    gap: 4px;
    cursor: pointer;
    padding: 1px 4px;
    border-radius: 3px;
    transition: background 0.2s ease;
    width: max-content;
    min-height: 20px;
}

.member-checkbox-item:hover {
    background: rgba(14, 69, 54, 0.06);
}

.member-checkbox-item input[type="checkbox"] {
    width: 12px;
    height: 12px;
    cursor: pointer;
    margin: 0;
    border: 2px solid #ccc;
    border-radius: 2px;
    appearance: none;
    -webkit-appearance: none;
    position: relative;
    flex-shrink: 0;
}

.member-checkbox-item input[type="checkbox"]:checked {
    background-color: currentColor;
    border-color: currentColor;
}

.member-checkbox-item input[type="checkbox"]:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 8px;
    font-weight: bold;
    line-height: 1;
}

.member-checkbox-item label {
    cursor: pointer;
    font-size: 0.8em;
    color: var(--ink);
    user-select: none;
    margin: 0;
    flex: 1;
    line-height: 1.1;
}

.member-checkbox-item:first-child {
    font-weight: 600;
    color: var(--gold-deep);
}

.member-checkbox-item:first-child:hover {
    background: rgba(217, 169, 59, 0.14);
}

.chart-container {
    display: flex;
    gap: 20px;
    padding: 25px;
    background: var(--card);
    border: 1px solid var(--card-edge);
    border-radius: var(--radius);
    box-shadow: 0 14px 34px rgba(0, 0, 0, 0.4);
}

.chart-content {
    flex: 1;
}

.chart-content h3 {
    font-family: var(--font-display);
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--ink);
    font-size: 1.4em;
}

.trend-chart-inspector {
    display: none;
}

.chart-canvas-frame {
    position: relative;
    width: 100%;
}

.chart-content canvas {
    max-height: 500px;
    width: 100% !important;
}

/* ===== 榜单 ===== */
.leaderboard-type-switcher {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 6px;
    max-width: 520px;
    margin: 0 auto 24px;
    padding: 5px;
    border: 1px solid var(--felt-line);
    border-radius: 14px;
    background: var(--glass-felt-bg);
}

.app-navigation,
.view-toggle,
.leaderboard-type-switcher,
.trend-metric-switcher {
    background: var(--glass-felt-bg);
    -webkit-backdrop-filter: var(--glass-felt-filter);
    backdrop-filter: var(--glass-felt-filter);
    isolation: isolate;
}

.leaderboard-type-btn {
    min-height: 42px;
    padding: 8px 12px;
    border: 0;
    border-radius: 10px;
    background: transparent;
    color: var(--ivory-dim);
    font: 700 0.9rem var(--font-body);
    cursor: pointer;
}

.leaderboard-type-btn.active {
    background: var(--gold);
    color: #2A1E05;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.25);
}

.leaderboard-section {
    margin-bottom: 45px;
}

.leaderboard-section:last-child {
    margin-bottom: 10px;
}

.leaderboard-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 12px;
}

.leaderboard-section-title {
    font-family: var(--font-display);
    font-weight: 700;
    margin: 0;
    color: var(--gold-soft);
    font-size: 1.4em;
}

.leaderboard-section .period-select {
    padding: 10px 48px 10px 18px;
    border: 1px solid var(--card-edge);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.95em;
    cursor: pointer;
    background: var(--card);
    background-image: var(--select-chevron);
    background-position: right 18px center;
    background-repeat: no-repeat;
    background-size: 16px 16px;
    color: var(--ink);
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
    min-width: 240px;
    -webkit-appearance: none;
    appearance: none;
}

.leaderboard-section .period-select:hover {
    border-color: var(--gold);
}

.leaderboard-section .period-select:focus {
    outline: none;
    border-color: var(--gold);
    box-shadow: 0 0 0 3px rgba(217, 169, 59, 0.3);
}

.leaderboard-meta {
    margin-bottom: 18px;
    color: var(--ivory-dim);
    font-size: 0.95em;
}

.leaderboard-section .rank-cell {
    font-family: var(--font-mono);
    font-size: 1.2em;
    text-align: center;
    font-weight: 700;
    color: var(--ink);
}

.leaderboard-section tr.rank-top {
    background: var(--hl-win);
}

.leaderboard-section tr.rank-top:hover {
    background: #DCEEE2;
}

/* water = 系统抽水托盘（金边强调） */
.leaderboard-section tr.water-row {
    background: linear-gradient(180deg, #FBF1D4 0%, #F6E8BE 100%);
    font-weight: 700;
    box-shadow: inset 4px 0 0 var(--gold);
}

.leaderboard-section tr.water-row:hover {
    background: #F4E4B2;
}

.leaderboard-section tr.water-row .rank-cell {
    font-size: 0.9em;
    color: var(--gold-deep);
}