:root {
    --nb-border: 2px solid #000;
    --nb-shadow: 4px 4px 0px 0px #000;
    --nb-shadow-hover: 2px 2px 0px 0px #000;
    --nb-bg: #fff;
    --nb-accent: #adff2f; /* Lime Green */
    --nb-text: #000;
    --nb-secondary: #fff;
}

.nb-card {
    background: var(--nb-bg);
    border: var(--nb-border);
    box-shadow: var(--nb-shadow);
    padding: 1.5rem;
    transition: all 0.2s ease;
}

.nb-card:hover {
    transform: translate(-2px, -2px);
    box-shadow: 6px 6px 0px 0px #000;
}

.nb-button {
    background: #000;
    color: #fff;
    border: var(--nb-border);
    padding: 0.5rem 1rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: var(--nb-shadow);
    transition: all 0.2s ease;
    text-decoration: none;
    display: inline-block;
}

.nb-button:hover {
    transform: translate(2px, 2px);
    box-shadow: 0px 0px 0px 0px #000;
}

.nb-button-secondary {
    background: #fff;
    color: #000;
}

.nb-button-small {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
}

.nb-tag {
    background: var(--nb-accent);
    color: #000;
    border: var(--nb-border);
    padding: 0.2rem 0.5rem;
    font-weight: 700;
    font-size: 0.8rem;
    text-transform: uppercase;
}

.nb-input {
    border: var(--nb-border);
    padding: 0.5rem 1rem;
    font-family: inherit;
    box-shadow: inset 2px 2px 0px rgba(0,0,0,0.1);
}

.nb-input:focus {
    outline: none;
    box-shadow: var(--nb-shadow);
}