* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #f3f4f6;
    color: #1f2937;
}

main {
    padding: 8px;
}

.row {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
}

.row-sidebar {
    width: 240px;
    min-width: 200px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-shrink: 0;
}

.row-charts {
    flex: 1;
    min-width: 0;
}

.owen-charts-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.card {
    background: #ffffff;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    padding: 12px;
}

.card h3 {
    font-size: 12px;
    font-weight: 600;
    color: #9ca3af;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
}

.card-header h3 {
    margin-bottom: 0;
}

.btn-power {
    background: none;
    border: 2px solid #dc2626;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: #dc2626;
    transition: all 0.15s;
    padding: 0;
    flex-shrink: 0;
}

.btn-power svg {
    width: 14px;
    height: 14px;
}

.btn-power.on {
    border-color: #dc2626;
    color: #dc2626;
}

.btn-power.on:hover {
    background: #dc2626;
    color: #fff;
}

.btn-power.off {
    border-color: #059669;
    color: #059669;
}

.btn-power.off:hover {
    background: #059669;
    color: #fff;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 4px 6px;
    text-align: left;
    border-bottom: 1px solid #e5e7eb;
    font-size: 12px;
}

th {
    color: #9ca3af;
    font-weight: 600;
    font-size: 11px;
    text-transform: uppercase;
}

td {
    color: #1f2937;
}

td.val-on {
    color: #059669;
    font-weight: 600;
}

td.val-off {
    color: #dc2626;
    font-weight: 600;
}

td.val-heat {
    color: #d97706;
    font-weight: 600;
}

.control-group {
    margin-bottom: 10px;
}

.control-group label {
    display: block;
    font-size: 12px;
    color: #6b7280;
    margin-bottom: 4px;
}

.control-group input[type="number"] {
    background: #f9fafb;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    color: #1f2937;
    padding: 5px 8px;
    font-size: 13px;
    width: 100%;
    margin-right: 0;
    margin-bottom: 6px;
    display: block;
}

.control-group .btn {
    width: 100%;
    display: block;
}

.btn {
    background: #3b82f6;
    color: #fff;
    border: none;
    border-radius: 6px;
    padding: 5px 12px;
    font-size: 13px;
    cursor: pointer;
    font-weight: 500;
    transition: background 0.15s;
}

.btn:hover {
    background: #2563eb;
}

.btn-toggle {
    min-width: 100px;
}

.btn-toggle.on {
    background: #dc2626;
}

.btn-toggle.on:hover {
    background: #b91c1c;
}

.btn-toggle.off {
    background: #059669;
}

.btn-toggle.off:hover {
    background: #047857;
}

canvas {
    width: 100% !important;
    max-height: 300px;
}