:root {
    --bg: #87ceeb;
    --ground: #8b7355;
    --grass: #5a8f3a;
    --text: #ffffff;
    --ui-bg: rgba(0, 0, 0, 0.7);
}

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

body {
    background: var(--bg);
    font-family: 'Courier New', monospace;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.game-container {
    position: relative;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

#game-canvas {
    display: block;
    background: var(--bg);
    cursor: crosshair;
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
}

.ui-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    padding: 20px;
    pointer-events: none;
}

.ui-overlay > * {
    pointer-events: auto;
}

.controls {
    background: var(--ui-bg);
    padding: 15px;
    border-radius: 8px;
    color: var(--text);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 15px;
}

.block-selector {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
    flex-direction: column;
    max-width: 400px;
}

.menu-title {
    background: var(--ui-bg);
    padding: 10px 20px;
    border-radius: 8px;
    color: var(--text);
    font-size: 16px;
    font-weight: bold;
}

.block-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.block-option {
    background: var(--ui-bg);
    padding: 15px;
    border-radius: 8px;
    color: var(--text);
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
    border: 2px solid transparent;
    pointer-events: auto;
}

.block-option:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: scale(1.05);
}

.block-option.active {
    border-color: #00ff00;
    box-shadow: 0 0 20px rgba(0, 255, 0, 0.5);
}

.current-block {
    background: var(--ui-bg);
    padding: 10px 20px;
    border-radius: 8px;
    color: var(--text);
    font-size: 16px;
    display: inline-block;
    margin-bottom: 15px;
}

.score {
    background: var(--ui-bg);
    padding: 10px 20px;
    border-radius: 8px;
    color: var(--text);
    font-size: 18px;
    font-weight: bold;
    display: inline-block;
}

.mode-indicators {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

.mode-indicator {
    background: var(--ui-bg);
    padding: 8px 15px;
    border-radius: 8px;
    color: var(--text);
    font-size: 14px;
    opacity: 0.6;
    transition: opacity 0.2s;
}

.mode-indicator.active {
    opacity: 1;
    color: #00ff00;
}