.mpbb-tabs {
    --mpbb-tabs-border: rgba(0, 0, 0, 0.12);
    --mpbb-tabs-bg: rgba(255, 255, 255, 0.72);
    --mpbb-tabs-soft-bg: rgba(0, 0, 0, 0.035);
    --mpbb-tabs-accent: #1677d2;
    --mpbb-tabs-text: inherit;
    --mpbb-tabs-muted: rgba(0, 0, 0, 0.58);

    margin: 1.15em 0;
    border: 1px solid var(--mpbb-tabs-border);
    background: var(--mpbb-tabs-bg);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
    overflow: hidden;
}

.mpbb-tabs-nav {
    display: flex;
    gap: 0.25rem;
    align-items: stretch;
    overflow-x: auto;
    padding: 0.45rem 0.45rem 0;
    background: linear-gradient(180deg, var(--mpbb-tabs-soft-bg), transparent);
    border-bottom: 1px solid var(--mpbb-tabs-border);
    scrollbar-width: thin;
}

.mpbb-tab-button {
    appearance: none;
    position: relative;
    flex: 0 0 auto;
    max-width: 220px;
    padding: 0.7rem 1rem;
    border: 0;
    background: transparent;
    color: var(--mpbb-tabs-muted);
    font: inherit;
    font-weight: 700;
    line-height: 1.2;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    cursor: pointer;
    transition: background-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.mpbb-tab-button:hover,
.mpbb-tab-button:focus {
    background: rgba(22, 119, 210, 0.08);
    color: var(--mpbb-tabs-accent);
    outline: none;
}

.mpbb-tab-button:focus-visible {
    box-shadow: inset 0 0 0 2px rgba(22, 119, 210, 0.35);
}

.mpbb-tab-button.is-active {
    background: rgba(22, 119, 210, 0.11);
    color: var(--mpbb-tabs-accent);
}

.mpbb-tab-button.is-active::after {
    content: '';
    position: absolute;
    right: 0.8rem;
    bottom: 0;
    left: 0.8rem;
    height: 3px;
    background: currentColor;
}

.mpbb-tabs-panels {
    padding: 1rem;
}

.mpbb-tab-panel {
    animation: mpbbTabsFade 180ms ease-out;
    color: var(--mpbb-tabs-text);
}

.mpbb-tab-panel > :first-child {
    margin-top: 0;
}

.mpbb-tab-panel > :last-child {
    margin-bottom: 0;
}

@keyframes mpbbTabsFade {
    from {
        opacity: 0;
        transform: translateY(4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 700px) {
    .mpbb-tabs {
    }

    .mpbb-tabs-nav {
        padding: 0.35rem 0.35rem 0;
    }

    .mpbb-tab-button {
        max-width: 180px;
        padding: 0.65rem 0.85rem;
        font-size: 0.95em;
    }

    .mpbb-tabs-panels {
        padding: 0.85rem;
    }
}

@media (prefers-color-scheme: dark) {
    .mpbb-tabs {
        --mpbb-tabs-border: rgba(255, 255, 255, 0.14);
        --mpbb-tabs-bg: rgba(20, 24, 31, 0.72);
        --mpbb-tabs-soft-bg: rgba(255, 255, 255, 0.055);
        --mpbb-tabs-muted: rgba(255, 255, 255, 0.66);
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.22);
    }
}

.mpbb-tab-button i,
.mpbb-tab-button .fa {
    margin-right: 0.4em;
    line-height: 1;
}

.mpbb-tab-label {
    vertical-align: baseline;
}

.mpbb-tab-title { display: none !important; }

/* Mobile accordion mode */
.mpbb-accordion-button {
    display: none;
    appearance: none;
    width: 100%;
    padding: 0.8rem 1rem;
    border: 0;
    border-bottom: 1px solid var(--mpbb-tabs-border);
    background: var(--mpbb-tabs-soft-bg);
    color: var(--mpbb-tabs-muted);
    font: inherit;
    font-weight: 700;
    line-height: 1.2;
    text-align: left;
    cursor: pointer;
}

.mpbb-accordion-button::after {
    content: '+';
    float: right;
    font-weight: 700;
}

.mpbb-accordion-button.is-active {
    color: var(--mpbb-tabs-accent);
    background: rgba(22, 119, 210, 0.11);
}

.mpbb-accordion-button.is-active::after {
    content: '-';
}

.mpbb-accordion-button i,
.mpbb-accordion-button .fa {
    margin-right: 0.4em;
    line-height: 1;
}

@media (max-width: 700px) {
    .mpbb-tabs-nav {
        display: none;
    }

    .mpbb-tabs-panels {
        padding: 0;
    }

    .mpbb-accordion-button {
        display: block;
    }

    .mpbb-tab-panel {
        padding: 0.9rem 1rem;
        border-bottom: 1px solid var(--mpbb-tabs-border);
    }
}

/* Optional color presets for tab titles: [tab=red PHP], [tab=blue fa-code PHP] */
.mpbb-tab-button.mpbb-tab-color-red.is-active,
.mpbb-accordion-button.mpbb-tab-color-red.is-active {
    color: #c0392b;
}
.mpbb-tab-button.mpbb-tab-color-blue.is-active,
.mpbb-accordion-button.mpbb-tab-color-blue.is-active {
    color: #1677d2;
}
.mpbb-tab-button.mpbb-tab-color-green.is-active,
.mpbb-accordion-button.mpbb-tab-color-green.is-active {
    color: #1f8f4d;
}
.mpbb-tab-button.mpbb-tab-color-orange.is-active,
.mpbb-accordion-button.mpbb-tab-color-orange.is-active {
    color: #d35400;
}
.mpbb-tab-button.mpbb-tab-color-purple.is-active,
.mpbb-accordion-button.mpbb-tab-color-purple.is-active {
    color: #8e44ad;
}
.mpbb-tab-button.mpbb-tab-color-teal.is-active,
.mpbb-accordion-button.mpbb-tab-color-teal.is-active {
    color: #00897b;
}