:root {
    --ct-bg: #f5f7fa;
    --ct-surface: #ffffff;
    --ct-surface-soft: #f0f5f7;
    --ct-border: #d6e0e6;
    --ct-text: #14212b;
    --ct-muted: #536675;
    --ct-teal: #0f766e;
    --ct-purple: #6d4aff;
    --ct-amber: #b7791f;
    --ct-red: #b42318;
    --ct-shadow: rgba(18, 33, 43, 0.08);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    width: 100%;
    min-width: 0;
    overflow-x: hidden;
    color: var(--ct-text);
    background: var(--ct-bg);
    font-family: "BIZ UDPGothic", "Noto Sans JP", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

button {
    font: inherit;
}

.ct-page {
    min-height: 100vh;
    background:
        linear-gradient(180deg, rgba(15, 118, 110, 0.06), transparent 270px),
        var(--ct-bg);
}

.ct-topbar {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    gap: 8px;
    align-items: center;
    overflow-x: auto;
    padding: 10px max(14px, calc((100vw - 1180px) / 2));
    border-bottom: 1px solid var(--ct-border);
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(8px);
}

.ct-topbar__link {
    flex: 0 0 auto;
    min-height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 12px;
    border: 1px solid var(--ct-border);
    border-radius: 8px;
    color: var(--ct-text);
    background: var(--ct-surface);
    text-decoration: none;
    font-size: 13px;
    font-weight: 700;
}

.ct-shell {
    width: min(1180px, 100%);
    margin: 0 auto;
    padding: 22px 14px 48px;
}

.ct-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 18px;
}

.ct-kicker {
    margin: 0 0 5px;
    color: var(--ct-teal);
    font-size: 13px;
    font-weight: 800;
}

.ct-header h1 {
    margin: 0;
    font-size: clamp(26px, 4vw, 42px);
    line-height: 1.15;
    letter-spacing: 0;
}

.ct-live-status {
    min-width: 116px;
    min-height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 12px;
    border-radius: 8px;
    border: 1px solid rgba(15, 118, 110, 0.22);
    background: #e8f5f3;
    color: #0d5f58;
    font-size: 13px;
    font-weight: 800;
    white-space: nowrap;
}

.ct-controls {
    display: grid;
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.4fr);
    gap: 12px;
    margin-bottom: 14px;
}

.ct-control-group {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 6px;
    min-width: 0;
    padding: 6px;
    border: 1px solid var(--ct-border);
    border-radius: 8px;
    background: var(--ct-surface);
    box-shadow: 0 8px 20px var(--ct-shadow);
}

.ct-control-group--period {
    grid-template-columns: repeat(6, minmax(0, 1fr));
}

.ct-control-button,
.ct-refresh-button {
    min-height: 38px;
    border: 1px solid transparent;
    border-radius: 6px;
    background: transparent;
    color: var(--ct-muted);
    font-size: 13px;
    font-weight: 800;
    cursor: pointer;
}

.ct-control-button:hover,
.ct-refresh-button:hover {
    border-color: var(--ct-border);
    color: var(--ct-text);
    background: var(--ct-surface-soft);
}

.ct-control-button.is-active {
    color: #ffffff;
    background: var(--ct-purple);
}

.ct-summary-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin-bottom: 14px;
}

.ct-metric,
.ct-panel {
    border: 1px solid var(--ct-border);
    border-radius: 8px;
    background: var(--ct-surface);
    box-shadow: 0 8px 20px var(--ct-shadow);
}

.ct-metric {
    min-height: 76px;
    padding: 14px;
    display: grid;
    align-content: center;
    gap: 5px;
}

.ct-metric__label {
    color: var(--ct-muted);
    font-size: 12px;
    font-weight: 700;
}

.ct-metric strong {
    min-width: 0;
    overflow-wrap: anywhere;
    font-size: 18px;
}

.ct-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
    gap: 14px;
    align-items: start;
}

.ct-panel {
    min-width: 0;
    padding: 14px;
}

.ct-panel__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 10px;
}

.ct-panel h2 {
    margin: 0 0 12px;
    font-size: 18px;
    letter-spacing: 0;
}

.ct-panel__head h2 {
    margin: 0;
}

.ct-refresh-button {
    min-width: 72px;
    border-color: var(--ct-border);
    background: var(--ct-surface-soft);
    color: var(--ct-text);
}

.ct-ranking-list,
.ct-stream-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.ct-ranking-list {
    display: grid;
    gap: 8px;
}

.ct-ranking-item {
    min-height: 62px;
    display: grid;
    grid-template-columns: 48px minmax(0, 1fr) minmax(82px, auto);
    align-items: center;
    gap: 10px;
    padding: 10px;
    border: 1px solid var(--ct-border);
    border-radius: 8px;
    background: var(--ct-surface);
}

.ct-ranking-item[data-rank="1"],
.ct-ranking-item[data-rank="2"],
.ct-ranking-item[data-rank="3"] {
    border-color: rgba(183, 121, 31, 0.45);
    background: #fff8ea;
}

.ct-rank {
    width: 40px;
    min-height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    color: #ffffff;
    background: var(--ct-teal);
    font-weight: 900;
}

.ct-ranking-item[data-rank="1"] .ct-rank,
.ct-ranking-item[data-rank="2"] .ct-rank,
.ct-ranking-item[data-rank="3"] .ct-rank {
    background: var(--ct-amber);
}

.ct-word {
    min-width: 0;
    overflow-wrap: anywhere;
    font-size: 17px;
    font-weight: 900;
}

.ct-meta {
    margin-top: 4px;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    color: var(--ct-muted);
    font-size: 12px;
    font-weight: 700;
}

.ct-score {
    justify-self: end;
    display: grid;
    gap: 2px;
    text-align: right;
}

.ct-score strong {
    color: var(--ct-purple);
    font-size: 18px;
}

.ct-score span {
    color: var(--ct-muted);
    font-size: 11px;
    font-weight: 700;
}

.ct-side {
    display: grid;
    gap: 14px;
}

.ct-stream-list {
    display: grid;
    gap: 8px;
}

.ct-stream-item {
    padding: 10px;
    border: 1px solid var(--ct-border);
    border-radius: 8px;
    background: var(--ct-surface-soft);
}

.ct-stream-title {
    min-width: 0;
    margin: 0 0 4px;
    overflow-wrap: anywhere;
    font-size: 13px;
    font-weight: 900;
}

.ct-stream-meta {
    color: var(--ct-muted);
    font-size: 12px;
    font-weight: 700;
}

.ct-status-list {
    display: grid;
    gap: 8px;
    margin: 0;
}

.ct-status-list div {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(70px, auto);
    gap: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--ct-border);
}

.ct-status-list div:last-child {
    border-bottom: 0;
    padding-bottom: 0;
}

.ct-status-list dt,
.ct-status-list dd {
    margin: 0;
    min-width: 0;
    overflow-wrap: anywhere;
    font-size: 12px;
}

.ct-status-list dt {
    color: var(--ct-muted);
    font-weight: 700;
}

.ct-status-list dd {
    text-align: right;
    font-weight: 900;
}

.ct-loading,
.ct-error,
.ct-empty {
    margin: 10px 0;
    padding: 12px;
    border-radius: 8px;
    font-weight: 800;
}

.ct-loading,
.ct-empty {
    background: var(--ct-surface-soft);
    color: var(--ct-muted);
}

.ct-error {
    border: 1px solid rgba(180, 35, 24, 0.28);
    background: #fff1f0;
    color: var(--ct-red);
}

@media (max-width: 900px) {
    .ct-header,
    .ct-controls,
    .ct-layout,
    .ct-summary-grid {
        grid-template-columns: 1fr;
    }

    .ct-header {
        display: grid;
        align-items: start;
    }

    .ct-control-group--period {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 560px) {
    .ct-shell {
        padding: 18px 10px 38px;
    }

    .ct-control-group,
    .ct-control-group--period {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .ct-ranking-item {
        grid-template-columns: 42px minmax(0, 1fr);
    }

    .ct-score {
        grid-column: 2;
        justify-self: start;
        text-align: left;
    }

    .ct-topbar {
        padding-left: 10px;
        padding-right: 10px;
    }
}