:root {
    --primary: #e74c3c;
    --bg-dark: #0f0f0f;
    --glass: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text: #e0e0e0;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 1200px;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

header h1 {
    font-size: clamp(1.5rem, 5vw, 2.5rem);
    margin: 0;
    background: linear-gradient(45deg, #e74c3c, #f1c40f);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

header p {
    color: #888;
    margin: 5px 0 0 0;
}

.simulation-wrapper {
    position: relative;
    background: #151515;
    border-radius: 20px;
    padding: 10px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--glass-border);
    width: 100%;
}

canvas {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
    border-radius: 10px;
    background: #111;
    display: block;
}

.controlsGlass {
    background: var(--glass);
    backdrop-filter: blur(15px);
    border: 1px solid var(--glass-border);
    padding: 24px;
    border-radius: 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    justify-content: center;
    align-items: flex-start;
}

.control-group {
    flex: 1;
    min-width: 200px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    text-align: left;
}

.control-group label {
    font-size: 0.8rem;
    font-weight: 700;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 1px;
}

input[type="range"] {
    width: 100%;
    accent-color: var(--primary);
}

.toggle-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-width: 180px;
}

.switch-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: #aaa;
    cursor: pointer;
}

input[type="checkbox"] {
    width: 40px;
    height: 20px;
    appearance: none;
    background: #333;
    border-radius: 20px;
    position: relative;
    cursor: pointer;
    transition: background 0.3s;
}

input[type="checkbox"]:checked {
    background: var(--primary);
}

input[type="checkbox"]::before {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    background: #fff;
    border-radius: 50%;
    top: 2px;
    left: 2px;
    transition: transform 0.3s;
}

input[type="checkbox"]:checked::before {
    transform: translateX(20px);
}

.button-group {
    display: flex;
    gap: 12px;
    width: 100%;
    justify-content: center;
}

.premium-btn {
    background: var(--primary);
    border: none;
    color: white;
    padding: 12px 24px;
    border-radius: 12px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    flex: 1;
    max-width: 200px;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.3);
}

.premium-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(231, 76, 60, 0.4);
}

.premium-btn.secondary {
    background: #333;
    box-shadow: none;
}

.info-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.info-card {
    background: rgba(20, 20, 20, 0.8);
    padding: 20px;
    border-radius: 15px;
    text-align: left;
    border: 1px solid var(--glass-border);
}

.info-card h3 {
    margin-top: 0;
    color: var(--primary);
    font-size: 1.1rem;
}

li {
    margin-bottom: 8px;
    font-size: 0.9rem;
    color: #bbb;
}

@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    .controlsGlass {
        padding: 16px;
        gap: 16px;
    }

    .control-group {
        min-width: 100%;
    }

    .info-section {
        grid-template-columns: 1fr;
    }

    .premium-btn {
        max-width: none;
    }
}