:root {
    --bg-color: #f4f7f6;
    --card-bg: #ffffff;
    --text-color: #333;
    --primary-color: #2c3e50;
    --accent-color: #3498db;
    --success: #27ae60;
    --error: #e74c3c;
    --border-radius: 8px;
    --shadow: 0 4px 6px rgba(0,0,0,0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 20px;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

h1 { margin: 0; font-size: 24px; color: var(--primary-color); }

.status-badge {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: bold;
    text-transform: uppercase;
    background: #ccc;
}

.status-badge.online { background: var(--success); color: white; }
.status-badge.offline { background: var(--error); color: white; }

.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 20px;
}

@media (max-width: 800px) {
    .dashboard-grid { grid-template-columns: 1fr; }
}

.card {
    background: var(--card-bg);
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

h2 { margin-top: 0; font-size: 18px; color: var(--primary-color); border-bottom: 2px solid var(--bg-color); padding-bottom: 10px; }

.video-container {
    background: #000;
    width: 100%;
    aspect-ratio: 4/3;
    border-radius: 4px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

#camera-feed {
    max-width: 100%;
    max-height: 100%;
}

.camera-controls {
    margin-top: 15px;
    display: flex;
    gap: 10px;
}

.camera-controls input {
    flex: 1;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.camera-controls button {
    padding: 8px 16px;
    background: var(--accent-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.sensor-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
}

.sensor-item {
    background: var(--bg-color);
    padding: 15px;
    border-radius: var(--border-radius);
    text-align: center;
}

.sensor-item label {
    display: block;
    font-size: 14px;
    color: #666;
    margin-bottom: 5px;
}

.sensor-item .value {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
}

.last-update {
    margin-top: 20px;
    font-size: 12px;
    color: #999;
    text-align: center;
}