body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f7f8fb;
    color: #222;
}

.app-shell {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    min-height: 100vh;
}

.topbar {
    padding: 16px 20px;
    background: #1f2a44;
    color: white;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
}

.topbar h1 {
    font-size: 20px;
    margin: 0;
    flex: 1 1 300px;
}

.controls {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
    width: 100%;
    max-width: 1280px;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.control-group label {
    font-size: 12px;
    color: #cfd8ff;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.control-group select,
.control-group input,
.control-group button {
    border: 1px solid #4c5a78;
    border-radius: 6px;
    padding: 10px 12px;
    font-size: 14px;
    background: #27344f;
    color: white;
    outline: none;
}

.control-group button {
    cursor: pointer;
    background: #5a7cff;
    border-color: #4c6ef5;
}

.control-group button:hover {
    background: #3a5fff;
}

#statusBanner {
    padding: 10px 14px;
    border-radius: 6px;
    background: #eaf2ff;
    color: #1f3a7a;
    border: 1px solid #c8d8ff;
    margin-top: 10px;
}

.map-container {
    position: relative;
    min-height: 75vh;
    width: 100%;
}

#map {
    width: 100%;
    height: 100%;
}

.side-panel {
    position: absolute;
    top: 18px;
    right: 18px;
    z-index: 1000;
    width: 280px;
    max-width: calc(100vw - 40px);
    background: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    box-shadow: 0 18px 45px rgba(0, 0, 0, 0.18);
    padding: 16px;
    font-size: 14px;
    color: #1a1a1a;
}

.side-panel h2 {
    margin: 0 0 10px;
    font-size: 16px;
}

.legend {
    margin-top: 14px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}

.legend-swatch {
    width: 26px;
    height: 14px;
    border-radius: 3px;
    border: 1px solid #ccc;
}

.footer {
    padding: 16px 20px;
    background: #ffffff;
    font-size: 13px;
    border-top: 1px solid #e6e9f0;
    color: #4e596b;
}

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

    .control-group {
        width: 100%;
    }

    .map-container {
        min-height: 60vh;
    }
}

@media (max-width: 800px) {
    .topbar {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
        padding: 14px 16px;
    }

    .topbar h1 {
        margin-bottom: 0;
        flex: none;
    }

    .controls {
        gap: 8px;
    }

    .map-container {
        display: grid;
        grid-template-rows: minmax(0, 1fr) auto;
        gap: 12px;
    }

    .side-panel {
        position: static;
        width: 100%;
        box-shadow: none;
        margin-top: 0;
    }
}

@media (max-width: 600px) {
    .topbar {
        padding: 12px 14px;
    }

    .topbar h1 {
        font-size: 18px;
        margin-bottom: 0;
    }

    .control-group label {
        font-size: 11px;
    }

    .control-group select,
    .control-group input,
    .control-group button {
        padding: 8px 10px;
        font-size: 13px;
    }

    #statusBanner {
        font-size: 13px;
        padding: 8px 10px;
    }

    .side-panel {
        padding: 14px;
    }

    .side-panel h2 {
        font-size: 15px;
    }

    .side-panel p,
    .side-panel div {
        font-size: 12px;
    }

    .legend-item {
        gap: 6px;
    }

    .legend-swatch {
        width: 22px;
        height: 12px;
    }

    .footer {
        padding: 14px 16px;
        font-size: 12px;
    }
}