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

body {
    background: #1a1a2e;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    overflow: hidden;
}

#game-container {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

canvas {
    background: #f5f0e8;
    border: 2px solid #333;
    border-radius: 4px;
}

/* ── Debug Panel ── */

#debug-panel {
    display: none;
    width: 250px;
    background: #16213e;
    border: 2px solid #333;
    border-radius: 4px;
    padding: 14px;
    color: #ccc;
    font-family: monospace;
    font-size: 12px;
    max-height: 600px;
    overflow-y: auto;
}

#debug-panel.active {
    display: block;
}

#debug-panel h3 {
    color: #9b59b6;
    margin-bottom: 10px;
    text-align: center;
    font-size: 14px;
}

#debug-panel h4 {
    color: #7ec8e3;
    margin: 8px 0 4px;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.param-group {
    border-bottom: 1px solid #2a2a4a;
    padding-bottom: 6px;
    margin-bottom: 4px;
}

#debug-panel label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 3px 0 1px;
    font-size: 11px;
}

#debug-panel label span {
    color: #f0ad4e;
    font-weight: bold;
}

#debug-panel input[type="range"] {
    width: 100%;
    margin-bottom: 4px;
    accent-color: #9b59b6;
    height: 14px;
}

#debug-panel input[type="checkbox"] {
    accent-color: #9b59b6;
    margin-right: 6px;
}

#btn-reset {
    width: 100%;
    margin-top: 10px;
    padding: 6px;
    background: #333;
    color: #ccc;
    border: 1px solid #555;
    border-radius: 3px;
    font-family: monospace;
    font-size: 11px;
    cursor: pointer;
}

#btn-reset:hover {
    background: #444;
}

.debug-hint {
    text-align: center;
    margin-top: 6px;
    color: #555;
    font-size: 10px;
}