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

body {
    background: #000;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    font-family: monospace;
    overflow: hidden;
}

#game-container {
    position: relative;
    width: 512px;
    height: 480px;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

#gameCanvas {
    display: block;
    background: #000;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.screen {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.92);
    color: #fff;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 40px;
}

.screen.active {
    display: flex;
}

.screen h1 {
    font-size: 28px;
    color: #f0c040;
    text-shadow: 2px 2px #804000;
    margin-bottom: 20px;
    line-height: 1.4;
}

.screen h2 {
    font-size: 22px;
    color: #f0c040;
    margin-bottom: 16px;
}

.subtitle {
    font-size: 14px;
    color: #90c0f0;
    margin-bottom: 40px;
}

.press-start {
    font-size: 14px;
    color: #f0c040;
    animation: blink 1s step-end infinite;
    margin-top: 30px;
}

.controls-hint {
    font-size: 11px;
    color: #888;
    margin-top: 10px;
}

.screen p {
    font-size: 14px;
    line-height: 1.8;
    max-width: 420px;
}

@keyframes blink {
    50% { opacity: 0; }
}

#hud {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 48px;
    background: #000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 12px;
    font-family: monospace;
    font-size: 13px;
    color: #fff;
    border-bottom: 2px solid #444;
    z-index: 5;
}

#hud-items {
    display: flex;
    gap: 6px;
    align-items: center;
}

.hud-item {
    width: 28px;
    height: 28px;
    border: 1px solid #555;
    background: #222;
    display: flex;
    align-items: center;
    justify-content: center;
    image-rendering: pixelated;
}

.hud-item.collected {
    border-color: #f0c040;
    background: #332800;
}

.hud-item canvas {
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}