:root {
    --top: 10px;
    --border: 20px;
    --text: 1.5rem;
}
body {
    margin: 0;
    overflow: hidden;
    font-family: sans-serif;
}
#punti {
    position: absolute;
    top: var(--top);
    left: var(--border);
    color: white;
    font-size: var(--text);
    pointer-events: none;
    display: none;
}
#tempo {
    position: absolute;
    top: var(--top);
    right: var(--border);
    color: white;
    font-size: var(--text);
    pointer-events: none;
    display: none;
}
#punti, #tempo {
    position: absolute;
    top: var(--top);
    color: white;
    font-size: var(--text);
    pointer-events: none;
    display: none;
    /* Aggiungi questa riga */
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
    font-weight: bold;
}

/* Cursore */
#crosshair {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 24px;
    font-family: sans-serif;
    pointer-events: none;
    display: none; /* Sarà visualizzato solo durante il gioco */
    z-index: 10;
}

/* Schermata iniziale del gioco */
#start {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    color: white;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    /* Queste 4 righe garantiscono la centratura totale */
    display: flex;
    flex-direction: column;
    justify-content: center; 
    align-items: center;
    z-index: 100; /* Assicurati che sia sopra al renderer di Three.js */
}

/* Video a tutto schermo */
#bg-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    object-fit: cover; /* Riempie lo schermo senza deformare */
}

.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: 0;
    pointer-events: none; /* Il click attraversa l'overlay e arriva a #start */
}

.content {
    position: relative;
    z-index: 1;
    height: 100%;
    width: 100%; /* Aggiunto */
    display: flex;
    flex-direction: column;
}

/* Divisione 50% Sopra */
.top-section {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.main-title {
    max-width: 80%;
    height: auto;
}

/* Divisione 50% Sotto */
.bottom-section {
    flex: 1;
    display: flex;
    flex-direction: row;
    width: 100%; /* Forza l'espansione orizzontale */
    align-items: flex-start;
    padding-top: 20px;
}

.item {
    /* flex: 1 0 33%; significa: cresci, non restringerti, base 33% */
    flex: 1 0 33.33%;
    display: flex;
    justify-content: center;
    text-align: center;
}

/* Styling dei Controlli (KBD) */
.controls-box {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.controls-box h3 {
    margin-bottom: 10px;
    font-size: 1.2rem;
    text-transform: uppercase;
}
.controls-box h3, .controls-box p, .pulse-text {
    margin-top: 0;
}

kbd {
    background-color: #eee;
    border-radius: 3px;
    border: 1px solid #b4b4b4;
    box-shadow: 0 1px 1px rgba(0,0,0,0.2), 0 2px 0 0 rgba(255,255,255,0.7) inset;
    color: #333;
    display: inline-block;
    font-size: 0.85em;
    font-weight: 700;
    line-height: 1;
    padding: 2px 4px;
    white-space: nowrap;
    margin: 0 2px;
}

/* Animazione per "Clicca per giocare" */
.pulse-text {
    font-size: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.4; }
    100% { opacity: 1; }
}