/* --- VARIABILI GLOBALI --- */
:root {
    --bg-light: #f8fafc;
    --text-dark: #1e293b;
    --green-eco: #10b981;
    --red-alert: #ef4444;
    --counter-top: #334155;
}

/* --- RESET BASE --- */
body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, sans-serif;
    background-color: var(--bg-light);
    color: var(--text-dark);
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
}

/* --- UI SUPERIORE (Punti e Tempo) --- */
#ui {
    margin-top: 20px;
    padding: 12px 40px;
    background: white;
    border-radius: 16px;
    font-size: 1.1rem;
    font-weight: 700;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    border: 1px solid #e2e8f0;
    z-index: 1000;
}

#ui span {
    color: var(--green-eco);
}

/* --- CONTAINER GIOCO --- */
#game-container {
    width: 92vw;
    height: 82vh;
    background-color: #000; /* Fondo nero per il mix-blend-mode */
    position: relative;
    overflow: hidden;
    border-radius: 24px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    margin: 20px auto;
    border: 8px solid white; /* Cornice stile tablet */
}

/* --- AREA DEI BIDONI (Ingranditi) --- */
#bins-container {
    display: flex;
    justify-content: center; /* Centra i bidoni */
    gap: 12px;               /* Spazio tra i bidoni */
    align-items: flex-end;
    padding: 30px 20px;
    width: 100%;
    height: 72%;             /* Più spazio verticale per cestini grandi */
    box-sizing: border-box;
}

.bin {
    position: relative;
    /* Ingrandimento: ora i bidoni occupano fino al 20% della larghezza */
    width: 20%; 
    max-width: 200px; 
    min-width: 140px;
    transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.bin:hover {
    transform: scale(1.08) translateY(-10px);
}

/* Gestione immagini con sfondo nero e scritta interna */
.bin img {
    width: 100%;
    height: auto;
    mix-blend-mode: screen; /* Rende il nero dell'immagine trasparente */
    pointer-events: none;
    z-index: 2;
    position: relative;
    
    /* Aumentiamo luminosità e contrasto per far leggere meglio le scritte nere */
    filter: brightness(1.25) contrast(1.1);
}

/* --- EFFETTI FEEDBACK (Bagliore sotto) --- */
.bin::after {
    content: "";
    position: absolute;
    bottom: 5%;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    height: 100px;
    border-radius: 50%;
    opacity: 0;
    filter: blur(25px);
    transition: opacity 0.3s ease;
    z-index: 1;
}

.glow-success::after {
    opacity: 0.8;
    background: var(--green-eco);
    box-shadow: 0 0 60px 30px var(--green-eco);
}

.glow-error::after {
    opacity: 0.8;
    background: var(--red-alert);
    box-shadow: 0 0 60px 30px var(--red-alert);
}

/* --- I RIFIUTI (Trash) --- */
.trash {
    width: 90px;
    height: 90px;
    object-fit: contain;
    position: absolute;
    z-index: 500;
    cursor: grab;
    /* Ombra per farli sembrare sollevati */
    filter: drop-shadow(0 12px 10px rgba(0,0,0,0.4));
}

.trash:active {
    cursor: grabbing;
}

/* --- IL BANCONE (Counter) --- */
#counter {
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 120px;
    background: var(--counter-top);
    border-top: 3px solid rgba(255,255,255,0.1);
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Effetto profondità sul bordo del bancone */
#counter::before {
    content: "";
    position: absolute;
    top: 0;
    width: 100%;
    height: 8px;
    background: linear-gradient(to bottom, rgba(0,0,0,0.3), transparent);
}