:root {
    --bg-color: #c64545; 
    --board-bg: #2b1d1d;
    --text-primary: #ffffff;
    --accent-color: #ffd740;
    --modal-bg: rgba(0, 0, 0, 0.98);
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: 'Segoe UI', Roboto, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0;
    overflow: hidden;
    touch-action: none;
    height: 100vh;
}

#ui-header {
    width: 100%;
    max-width: 400px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    box-sizing: border-box;
}

.high-score-container { font-weight:bold; font-size: 18px; }
.score-value { font-size: 42px; font-weight: bold; margin: 0; text-shadow: 2px 2px 4px rgba(0,0,0,0.3); }

#open-guide { background:none; border:none; font-size:28px; cursor:pointer; }

#powerup-bar { display: flex; gap: 20px; margin-bottom: 10px; }

.powerup-btn {
    background: #444;
    border: 2px solid white;
    border-radius: 50%;
    width: 55px; height: 55px;
    font-size: 24px;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    position: relative;
    transition: transform 0.2s;
}

.powerup-btn.active { border-color: var(--accent-color); transform: scale(1.1); box-shadow: 0 0 15px var(--accent-color); }

.pulse-warn {
    animation: pulse-red 1s infinite alternate;
    border-color: #ff5252 !important;
}

@keyframes pulse-red {
    from { transform: scale(1); box-shadow: 0 0 0px #ff5252; }
    to { transform: scale(1.2); box-shadow: 0 0 20px #ff5252; }
}

.count-badge {
    position: absolute;
    top: -5px; right: -5px;
    background: white; color: black;
    border-radius: 50%; width: 20px; height: 20px;
    font-size: 12px; font-weight: bold;
    display: flex; align-items: center; justify-content: center;
}

#game-container {
    position: relative;
    width: 95vw;
    max-width: 380px;
    aspect-ratio: 2 / 3.2;
}

canvas { width: 100%; height: 100%; background-color: var(--board-bg); border-radius: 20px; box-shadow: 0 10px 30px rgba(0,0,0,0.5); }

.modal {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: var(--modal-bg);
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: 20px;
    z-index: 5000;
    padding: 20px;
    box-sizing: border-box;
    text-align: center;
}

.go-title { color: #ff5252; font-size: 48px; margin: 0; }
.final-score-val { font-weight:bold; color:var(--accent-color); }

.btn-ui {
    padding: 15px 50px;
    background: var(--accent-color);
    border: none;
    border-radius: 35px;
    font-size: 20px;
    font-weight: bold;
    color: #333;
    cursor: pointer;
    margin-top: 25px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}