body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
    color: white;
}

.app-container {
    max-width: 1400px;
    margin: auto;
    padding: 40px;
}

h1 {
    text-align: center;
    margin-bottom: 40px;
    letter-spacing: 2px;
}

.main-layout {
    display: flex;
    gap: 40px;
    justify-content: center;
    align-items: flex-start;
}

.canvas-wrapper {
    background: #111;
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 0 30px rgba(0,0,0,0.6);
}

canvas {
    border-radius: 10px;
    max-width: 800px;
}

.side-panel {
    width: 350px;
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.analytics-card,
.info-card {
    background: rgba(255,255,255,0.08);
    padding: 25px;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    box-shadow: 0 0 20px rgba(0,0,0,0.4);
}

.analytics-card h2,
.info-card h2 {
    margin-top: 0;
    margin-bottom: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.2);
    padding-bottom: 10px;
}

.analytics-card p {
    margin: 12px 0;
    font-size: 15px;
}

.heavy-dot,
.medium-dot,
.light-dot {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: 8px;
}

.heavy-dot { background: red; }
.medium-dot { background: orange; }
.light-dot { background: yellow; }

hr {
    border: none;
    border-top: 1px solid rgba(255,255,255,0.2);
    margin: 15px 0;
}