:root {
    --bg-color: #FFF0F5; /* Lavender Blush */
    --text-color: #8E7CC3;
    --canvas-bg: #FFFFFF;
    --ui-bg: #F8F8FF; /* Ghost White */
    --shadow: 0 10px 20px rgba(142, 124, 195, 0.15);
    --border-radius: 15px;
    
    /* Pastel Palette */
    --color-cyan: #AEC6CF;
    --color-blue: #C3B1E1;
    --color-orange: #FFB347;
    --color-yellow: #FDFD96;
    --color-green: #77DD77;
    --color-purple: #B39EB5;
    --color-red: #FF6961;
}

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

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

.game-container {
    background-color: rgba(255, 255, 255, 0.8);
    padding: 2rem;
    border-radius: 30px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.header {
    text-align: center;
    width: 100%;
}

h1 {
    font-family: 'Fredoka One', cursive;
    font-size: 3rem;
    color: var(--color-blue);
    margin-bottom: 0.5rem;
    text-shadow: 2px 2px 0px #FFF, 4px 4px 0px rgba(195, 177, 225, 0.3);
}

.score-board {
    font-size: 1.5rem;
    background: var(--ui-bg);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    display: inline-block;
    box-shadow: inset 0 2px 5px rgba(0,0,0,0.05);
}

.game-area {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}

canvas {
    background-color: var(--canvas-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border: 4px solid #fff;
}

#gameCanvas {
    border: 8px solid #fff;
}

.sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    align-items: center;
}

.next-piece {
    background: var(--ui-bg);
    padding: 1rem;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--shadow);
    border: 4px solid #fff;
}

.next-piece h3 {
    margin-bottom: 0.5rem;
    color: var(--color-purple);
}

.controls-info {
    font-size: 0.9rem;
    color: #999;
    text-align: center;
    line-height: 1.6;
}

button {
    font-family: 'Fredoka One', cursive;
    font-size: 1.2rem;
    padding: 0.8rem 2rem;
    border: none;
    border-radius: 50px;
    background-color: var(--color-green);
    color: white;
    cursor: pointer;
    transition: transform 0.1s, box-shadow 0.1s;
    box-shadow: 0 4px 0 rgba(119, 221, 119, 0.6);
}

button:active {
    transform: translateY(4px);
    box-shadow: none;
}

button:hover {
    filter: brightness(1.05);
}