* { box-sizing: border-box; }

        :root {
            --bg-a: #e7f7f3;
            --bg-b: #f5fbff;
            --card: #ffffff;
            --ink: #16313a;
            --muted: #4f6a74;
            --line: #d3e1e8;
            --accent: #0f9d8f;
            --accent-strong: #0a7b70;
            --warn: #c85724;
            --ok: #1f8f3e;
            --bad: #cc3f3f;
        }

        html, body {
            width: 100%;
            height: 100%;
            margin: 0;
            overflow: hidden;
            color: var(--ink);
            font-family: "BIZ UDPGothic", "Yu Gothic", "Meiryo", sans-serif;
            background:
                radial-gradient(circle at 8% 8%, #c7eee6 0%, transparent 34%),
                radial-gradient(circle at 90% 86%, #d6ecff 0%, transparent 36%),
                linear-gradient(140deg, var(--bg-a), var(--bg-b));
        }

        .page {
            width: 100%;
            height: 100%;
            padding: 16px;
        }

        .panel {
            width: 100%;
            height: 100%;
            background: var(--card);
            border: 1px solid var(--line);
            border-radius: 14px;
            box-shadow: 0 10px 28px rgba(22, 49, 58, 0.11);
            display: flex;
            flex-direction: column;
            min-height: 0;
            animation: rise 320ms ease;
        }

        .header {
            padding: 14px 16px 8px;
            border-bottom: 1px solid #edf3f6;
        }

        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }

        h1 {
            margin: 0;
            font-size: clamp(1.1rem, 1.1rem + 0.8vw, 1.6rem);
            letter-spacing: 0.01em;
        }

        .back-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--muted);
            font-size: 0.9rem;
            text-decoration: none;
            padding: 4px 0;
            margin-bottom: 12px;
        }

        .back-link:hover {
            color: #0a84ff;
        }

        .meta {
            margin-top: 8px;
            color: var(--muted);
            line-height: 1.65;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 2px 14px;
            font-size: 0.95rem;
        }

        .controls {
            padding: 10px 16px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            border-bottom: 1px solid #edf3f6;
            align-items: center;
        }

        .controls-group {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
        }

        .checkbox-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            min-height: 36px;
            color: var(--muted);
            font-size: 0.9rem;
            user-select: none;
        }

        .checkbox {
            width: 16px;
            height: 16px;
            accent-color: var(--accent);
            cursor: pointer;
        }

        .header-checkbox-label {
            flex-wrap: wrap;
            justify-content: flex-end;
            padding: 0 4px;
        }

        .bridge-status {
            display: inline-flex;
            align-items: center;
            gap: 0;
            padding-left: 2px;
            font-size: 0.85rem;
        }

        .bridge-status-disabled {
            color: var(--muted);
        }

        .bridge-status-connecting {
            color: #9a6700;
        }

        .bridge-status-connected {
            color: var(--ok);
        }

        .bridge-status-disconnected {
            color: var(--bad);
        }

        .bridge-dot {
            width: 8px;
            height: 8px;
            margin-right: 5px;
        }

        .label {
            font-size: 0.9rem;
            color: var(--muted);
            margin-right: 2px;
        }

        .input,
        .select,
        .btn {
            border: 1px solid var(--line);
            border-radius: 8px;
            height: 36px;
            font-size: 0.92rem;
        }

        .input,
        .select {
            padding: 0 10px;
            background: #fff;
            color: var(--ink);
        }

        .btn {
            padding: 0 14px;
            font-weight: 700;
            cursor: pointer;
            background: #ebf7f5;
            color: var(--ink);
            transition: background 120ms ease, transform 120ms ease;
        }

        .btn:hover:not(:disabled) {
            background: #dff2ef;
            transform: translateY(-1px);
        }

        .btn:disabled {
            opacity: 0.55;
            cursor: not-allowed;
        }

        .btn.primary {
            border-color: transparent;
            background: var(--accent);
            color: #fff;
        }

        .btn.primary:hover:not(:disabled) {
            background: var(--accent-strong);
        }

        .btn.warn {
            border-color: transparent;
            background: var(--warn);
            color: #fff;
        }

        .btn.danger-soft {
            border-color: #d6a1a1;
            background: #fff5f5;
            color: #8d2222;
        }

        .btn.danger-soft:hover:not(:disabled) {
            background: #ffeaea;
        }

        .danger-zone {
            display: flex;
            justify-content: flex-end;
            flex: 0 0 auto;
        }

        .dot {
            display: inline-block;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            vertical-align: middle;
            margin-right: 6px;
            background: var(--bad);
            box-shadow: 0 0 0 2px rgba(204, 63, 63, 0.2);
        }

        .dot.ok {
            background: var(--ok);
            box-shadow: 0 0 0 2px rgba(31, 143, 62, 0.2);
        }

        .chart-wrap {
            flex: 1 1 0;
            min-height: 0;
            padding: 10px 14px 14px;
            position: relative;
        }

        @keyframes rise {
            from { opacity: 0; transform: translateY(8px); }
            to { opacity: 1; transform: translateY(0); }
        }

        @media (max-width: 900px) {
            html, body { overflow: auto; }
            .page { height: auto; min-height: 100%; }
            .panel { height: auto; min-height: 100%; }
            .chart-wrap { height: 54vh; min-height: 340px; }
            .header-top {
                flex-wrap: wrap;
            }
            .danger-zone {
                width: 100%;
                justify-content: space-between;
            }
        }