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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    min-height: 100vh;
    color: #fff;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

h1 {
    text-align: center;
    margin-bottom: 5px;
    font-size: 2.5rem;
    color: #00d4ff;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

.subtitle {
    text-align: center;
    color: #b8b8d1;
    margin-bottom: 30px;
    font-style: italic;
}

h2 {
    color: #00d4ff;
    margin-bottom: 15px;
}

h3 {
    color: #00d4ff;
    margin-bottom: 10px;
    font-size: 1rem;
}

.main-content {
    display: flex;
    gap: 30px;
    margin-bottom: 40px;
    flex-wrap: wrap;
    justify-content: center;
}

.simulation-area {
    background: #0f0f23;
    border-radius: 15px;
    padding: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.table-container {
    position: relative;
}

#airTableCanvas {
    display: block;
    border-radius: 10px;
    cursor: crosshair;
}

.slope-indicator {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(0, 0, 0, 0.7);
    padding: 10px 15px;
    border-radius: 5px;
    font-size: 0.9rem;
    color: #00ff88;
    line-height: 1.6;
}

.slope-indicator sub {
    font-size: 0.7rem;
}

.controls-area {
    background: #0f0f23;
    border-radius: 15px;
    padding: 25px;
    min-width: 280px;
    max-width: 320px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.control-group {
    margin-bottom: 20px;
}

.control-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #b8b8d1;
}

.control-group input[type="range"] {
    width: calc(100% - 60px);
    vertical-align: middle;
}

.control-group span {
    display: inline-block;
    width: 50px;
    text-align: right;
    color: #00d4ff;
    font-weight: bold;
}

.instructions {
    background: #1a1a3e;
    border-radius: 10px;
    padding: 15px;
    margin-bottom: 20px;
}

.instructions ol {
    margin-left: 20px;
    color: #b8b8d1;
    font-size: 0.9rem;
}

.instructions li {
    margin-bottom: 8px;
}

.button-group {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    flex: 1;
}

.btn-primary {
    background: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
    color: #000;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 212, 255, 0.4);
}

.btn-secondary {
    background: #2a2a4a;
    color: #fff;
}

.btn-secondary:hover {
    background: #3a3a5a;
}

.velocity-display {
    background: #1a1a3e;
    border-radius: 10px;
    padding: 15px;
}

.velocity-display p {
    margin-bottom: 8px;
    color: #b8b8d1;
}

.velocity-display span {
    color: #00ff88;
}

@media (max-width: 900px) {
    .main-content {
        flex-direction: column;
        align-items: center;
    }

    .controls-area {
        min-width: 100%;
        max-width: 100%;
    }

    #airTableCanvas {
        width: 100%;
        height: auto;
    }
}