.investment-grid {
    display: grid;
    grid-template-columns: 1fr; 
    gap: 20px; 
}

.investment-card {
    background-color: var(--container-bg-color); 
    border: 1px solid var(--soft-grey);
    border-radius: 8px;
    padding: 20px; 
    text-align: center;
    box-shadow: 0 3px 12px rgba(0, 0, 0, 0.1); 
    opacity: 0; 
    transform: translateY(20px); 
    transition: transform 0.6s ease-out, opacity 0.6s ease-out; 
}

.investment-card.fade-in {
    opacity: 1;
    transform: translateY(0);
}

.investment-card:hover {
    transform: translateY(-5px); 
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15); 
}

.investment-card img {
    width: 100px; 
    height: 100px; 
    object-fit: cover;
    margin-bottom: 8px; 
    border-radius: 50%;
    border: 2px solid var(--accent-gold); 
    background-color: var(--container-bg-color); 
}

.investment-card h3 {
    font-size: 1.2em; 
    margin-bottom: 8px; 
}

.investment-card p {
    font-size: 0.8em; 
    margin-bottom: 8px; 
    color: var(--text-dark); 
}

.investment-details p {
    margin: 3px 0; 
    font-size: 0.85em; 
    color: var(--text-dark); 
}

.investment-details span {
    font-weight: bold;
    color: var(--accent-gold); 
}

.buy-section {
    margin-top: 12px; 
    display: flex;
    flex-direction: column;
    gap: 6px; 
    align-items: center;
}

.buy-section input[type="number"] {
    width: 95%; 
    max-width: 150px; 
    padding: 6px; 
    border: 1px solid var(--soft-grey);
    border-radius: 5px;
    background-color: var(--container-bg-color); 
    color: var(--text-dark); 
    font-size: 0.85em; 
    text-align: center;
}

.buy-section input[type="number"]::placeholder {
    color: #888
}

.buy-section button {
    background-color: var(--accent-gold); 
    color: var(--text-light);
    border: none;
    padding: 8px 15px; 
    border-radius: var(--btn-border-radius); 
    cursor: pointer;
    font-size: 0.85em; 
    font-weight: bold;
    transition: background-color 0.3s ease, transform 0.15s ease-out, box-shadow 0.3s ease; 
    width: 95%; 
    max-width: 150px; 
    box-shadow: var(--btn-shadow); 
    min-width: 80px; 
}

.buy-section button:hover {
    background-color: #C2A22F; 
    transform: scale(1.02); 
    box-shadow: var(--btn-hover-shadow); 
}

.buy-section button:focus-visible {
    outline: 2px solid var(--btn-focus-outline-color); 
    outline-offset: 2px;
}

.buy-section .sell-btn {
    background-color: var(--soft-grey); 
    color: var(--text-dark); 
}

.buy-section .sell-btn:hover {
    background-color: #B5B5B5; 
    transform: scale(1.02);
}

@media (min-width: 769px) {
    .investment-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); 
        gap: 25px; 
    }

    .investment-card {
        padding: 25px; 
    }

    .investment-card img {
        width: 120px; 
        height: 120px; 
    }

    .investment-card h3 {
        font-size: 1.4em; 
    }

    .investment-card p {
        font-size: 0.9em; 
    }

    .investment-details p {
        font-size: 0.95em; 
        margin: 4px 0; 
    }

    .buy-section {
        margin-top: 15px; 
        gap: 8px; 
    }

    .buy-section input[type="number"] {
        max-width: 180px; 
        padding: 8px; 
        font-size: 0.95em; 
    }

    .buy-section button {
        padding: 10px 18px; 
        font-size: 0.95em; 
        max-width: 180px; 
        min-width: 100px; 
    }
}