:root {
    --bg-color: #e0f7fa;
    --game-bg: #81c784; /* Grass green */
    --water-color: #4fc3f7;
    --road-color: #546e7a;
    --text-color: #263238;
    --accent-color: #ffca28;
    --btn-bg: #ff7043;
    --btn-hover: #f4511e;
}

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

body {
    font-family: 'Nunito', sans-serif;
    background-color: var(--bg-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    color: var(--text-color);
}

.game-container {
    position: relative;
    max-width: 600px;
    width: 100%;
    padding: 20px;
}

.game-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 1.2rem;
    font-weight: bold;
    font-family: 'Fredoka One', cursive; /* Cute chubby font for headers */
    color: #004d40;
}

.game-wrapper {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0,0,0,0.15);
    background-color: #333; /* Canvas bg fallback */
    width: 560px;
    height: 640px;
    margin: 0 auto;
}

canvas {
    display: block;
    background-color: var(--game-bg);
}

.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(4px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    z-index: 10;
    transition: opacity 0.3s ease;
}

.hidden {
    opacity: 0;
    pointer-events: none;
    visibility: hidden; /* Important for accessibility so buttons aren't clickable when hidden */
}

h1 {
    font-family: 'Fredoka One', cursive;
    font-size: 3rem;
    color: var(--btn-bg);
    margin-bottom: 10px;
    text-shadow: 2px 2px 0px rgba(0,0,0,0.1);
}

.subtitle {
    font-size: 1.5rem;
    color: var(--text-color);
}

p {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.btn {
    padding: 12px 30px;
    font-size: 1.2rem;
    font-family: 'Fredoka One', cursive;
    color: white;
    background-color: var(--btn-bg);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: 0 5px 0 #d84315; /* Retro pressable button style */
    transition: transform 0.1s, box-shadow 0.1s;
}

.btn:hover {
    background-color: var(--btn-hover);
    transform: translateY(-2px);
    box-shadow: 0 7px 0 #d84315;
}

.btn:active {
    transform: translateY(2px);
    box-shadow: 0 3px 0 #d84315;
}

.controls-hint {
    margin-top: 10px;
    text-align: center;
}

.icon-btn {
    background: none;
    border: 2px solid var(--text-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.2s;
}

.icon-btn:hover {
    background-color: var(--text-color);
    color: white;
}