.theme-dark {
    --bg: #10151f;
    --panel: #182130;
    --panel-dark: #111824;
    --text: #eef4ff;
    --bb-text-color: var(--text);
    --muted: #9fb0c8;
    --ok: #2fd073;
    --warning: #ffb020;
    --danger: #ff3232;
    --border: rgba(255,255,255,0.1);
    margin: 0;
    min-height: 100vh;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 16px;
    /*   background: radial-gradient(circle at top left, #25334b, var(--bg) 48%);*/
    background: black;
    color: var(--text);
    min-height: 100vh;
    width: 100%;
}

    .theme-dark * {
        box-sizing: border-box;
    }


    .theme-dark .topbar {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 28px 36px;
        border-bottom: 1px solid var(--border);
    }

    .theme-dark h1, h2, h3, p {
        margin-top: 0;
    }

    .theme-dark h1 {
        margin-bottom: 0;
        font-size: 32px;
    }

    .theme-dark h2 {
        margin-bottom: 8px;
    }

    .theme-dark .eyebrow {
        color: var(--muted);
        text-transform: uppercase;
        letter-spacing: 0.14em;
        font-size: 12px;
        margin-bottom: 8px;
    }

    .theme-dark .muted {
    color: var(--muted);
}

    .theme-dark .system-status {
        display: flex;
        align-items: center;
        gap: 10px;
        background: rgba(47,208,115,0.12);
        border: 1px solid rgba(47,208,115,0.35);
        border-radius: 999px;
        padding: 10px 16px;
        font-weight: bold;
    }

        .theme-dark .system-status.alarm {
            background: rgba(255,50,50,0.15);
            border-color: rgba(255,50,50,0.65);
            animation: flashPanel 0.9s infinite;
        }

        .theme-dark .system-status.attention {
            background: rgba(255,50,50,0.15);
            border-color: var(--warning);
            animation: flashPanel 0.9s infinite;
        }

    .theme-dark .status-dot {
        width: 12px;
        height: 12px;
        border-radius: 50%;
        background: var(--ok);
        box-shadow: 0 0 16px var(--ok);
    }

    .theme-dark .system-status.alarm .status-dot {
        background: var(--danger);
        box-shadow: 0 0 20px var(--danger);
    }

    .theme-dark .system-status.attention .status-dot {
        background: var(--warning);
        box-shadow: 0 0 20px var(--warning);
    }

    .theme-dark .dashboard {
        display: grid;
        grid-template-columns: 1fr 360px;
        gap: 24px;
        padding: 28px 36px 36px;
    }

    .theme-dark .dashboard2 {
        display: grid;
/*        grid-template-columns: 1fr 360px;*/
        gap: 24px;
        padding: 28px 36px 36px;
    }

    .theme-dark .panel-card {
        background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.015)), var(--panel);
        border: 1px solid var(--border);
        border-radius: 22px;
        box-shadow: 0 24px 60px rgba(0,0,0,0.25);
        padding: 24px;
    }

    .theme-dark .mimic-panel {
        border: 2px solid #2e3a4d;
        outline: 8px solid rgba(0,0,0,0.16);
    }

    .theme-dark .panel-header {
        display: flex;
        justify-content: space-between;
        gap: 20px;
        align-items: flex-start;
        margin-bottom: 22px;
    }

    .theme-dark .panel-meta {
        color: var(--muted);
        display: grid;
        gap: 6px;
        text-align: right;
    }

    .theme-dark .summary-grid {
        display: grid;
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: 14px;
        margin-bottom: 22px;
    }

    .theme-dark .summary-tile {
        background: var(--panel-dark);
        border: 1px solid var(--border);
        border-radius: 16px;
        padding: 16px;
    }

        .theme-dark .summary-tile strong {
            display: block;
            font-size: 28px;
            margin-bottom: 4px;
        }

        .theme-dark .summary-tile span {
            color: var(--muted);
            font-size: 13px;
        }

        .theme-dark .summary-tile.danger strong {
            color: var(--danger);
        }

        .theme-dark .summary-tile.warning strong {
            color: var(--warning);
        }

    .theme-dark .zone-grid {
        display: grid;
        grid-template-columns: repeat(4, minmax(170px, 1fr));
        gap: 14px;
    }

    .theme-dark .zone-card {
        background: #0e1520;
        border: 1px solid var(--border);
        border-radius: 18px;
        padding: 16px;
        position: relative;
        min-height: 144px;
        overflow: hidden;
    }

        .theme-dark .zone-card::before {
            content: "";
            position: absolute;
            inset: 0;
            border-top: 5px solid var(--ok);
            pointer-events: none;
        }

        .theme-dark .zone-card.leak {
            border-color: rgba(255,50,50,0.85);
            animation: flashLeak 0.7s infinite;
        }

            .theme-dark .zone-card.leak::before {
                border-color: var(--danger);
            }

        .theme-dark .zone-card.fault::before {
            border-color: var(--warning);
        }

        .theme-dark .zone-card .name {
            font-size: 24px;
            font-weight: bold;
            margin-bottom: 10px;
        }

        .theme-dark .zone-card .location {
            font-size: 16px;
        }

        .theme-dark .zone-card .info {
            color: var(--muted);
            font-size: 13px;
            margin-bottom: 20px;
            margin-top: 0;
        }

    .theme-dark .zone-state {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        border-radius: 999px;
        padding: 8px 10px;
        font-size: 13px;
        font-weight: bold;
        background: rgba(47,208,115,0.12);
        color: #9ff3c2;
    }

    .theme-dark .zone-card.leak .zone-state {
        background: rgba(255,50,50,0.18);
        color: #ffd0d0;
    }

    .theme-dark .zone-card.fault .zone-state {
        background: rgba(255,176,32,0.15);
        color: #ffe1a6;
    }

    .theme-dark .side-panel {
        display: flex;
        flex-direction: column;
        gap: 16px;
    }

    .theme-dark .button {
        border: 0;
        border-radius: 14px;
        padding: 13px 16px;
        background: #dce8ff;
        color: #0c1420;
        font-weight: bold;
        cursor: pointer;
    }

        .theme-dark .button:hover {
            filter: brightness(1.08);
        }

    .theme-dark .danger-button {
        background: var(--danger);
        color: white;
    }

    .theme-dark .secondary {
        background: #273247;
        color: var(--text);
        border: 1px solid var(--border);
    }

    .theme-dark .alert-config {
        display: grid;
        gap: 12px;
        padding-top: 12px;
        border-top: 1px solid var(--border);
    }

    .theme-dark label {
        display: grid;
        gap: 6px;
        color: var(--muted);
        font-size: 14px;
    }

    .theme-dark input, select {
        width: 100%;
        border: 1px solid var(--border);
        background: #0e1520;
        color: var(--text);
        border-radius: 12px;
        padding: 11px 12px;
    }

    .theme-dark .event-log ul {
        list-style: none;
        padding: 0;
        margin: 0;
        display: grid;
        gap: 10px;
        overflow-y: auto;
        max-height: 670px;
    }

    .theme-dark .event-log li {
        border-left: 4px solid var(--border);
        background: rgba(255,255,255,0.04);
        border-radius: 10px;
        padding: 10px;
        color: var(--muted);
        font-size: 13px;
    }

        .theme-dark .event-log li.alarm {
            border-left-color: var(--danger);
            color: #ffd0d0;
        }

        .theme-dark .event-log li.fault {
            border-left-color: var(--warning);
            color: #ffe1a6;
        }

    .theme-dark #emailDialog::backdrop {
        background: rgba(0,0,0,0.6);
    }

    .theme-dark .dialog-card {
        max-width: 480px;
        background: var(--panel);
        color: var(--text);
        border: 1px solid var(--border);
        border-radius: 18px;
        padding: 24px;
    }

    @keyframes flashLeak {
        0%, 100% {
            background: #261217;
            box-shadow: 0 0 0 rgba(255,50,50,0);
        }

        50% {
            background: #4a1015;
            box-shadow: 0 0 34px rgba(255,50,50,0.45);
        }
    }

    @keyframes flashPanel {
        0%, 100% {
            transform: scale(1);
        }

        50% {
            transform: scale(1.025);
        }
    }

@media (max-width: 1100px) {
    .theme-dark .dashboard {
        grid-template-columns: 1fr;
    }

    .theme-dark .zone-grid {
        grid-template-columns: repeat(2, minmax(160px, 1fr));
    }
}

@media (max-width: 640px) {
    .theme-dark .topbar, .panel-header {
        flex-direction: column;
    }

    .theme-dark .dashboard, .topbar {
        padding-left: 18px;
        padding-right: 18px;
    }

    .theme-dark .summary-grid, .zone-grid {
        grid-template-columns: 1fr;
    }

    .theme-dark .panel-meta {
        text-align: left;
    }
}