/* ─── Text Reverser — Brand-Consistent Stylesheet ───────────────────────────
   Scoped entirely to #fu-text-reverser.
   Uses only standard design system variables (--fu-*).
   ─────────────────────────────────────────────────────────────────────────── */

#fu-text-reverser {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    width: 100%;
}

/* ── Controls Panel ─────────────────────────────────────────────────────── */
#fu-text-reverser .fu-tr-controls-panel {
    padding: 1rem 1.25rem;
}

#fu-text-reverser .fu-tr-controls-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem 2rem;
}

#fu-text-reverser .fu-tr-mode-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}

#fu-text-reverser .fu-tr-mode-group .fu-label {
    margin-bottom: 0;
    white-space: nowrap;
}

/* ── Mode Pills ─────────────────────────────────────────────────────────── */
#fu-text-reverser .fu-tr-pills {
    display: flex;
    flex-wrap: nowrap;
    gap: 0.375rem;
    overflow-x: auto;
    padding-bottom: 2px;
    -ms-overflow-style: none;
    scrollbar-width: none;
}

#fu-text-reverser .fu-tr-pills::-webkit-scrollbar {
    display: none;
}

#fu-text-reverser .fu-tr-pill {
    display: inline-flex;
    align-items: center;
    padding: 0.4rem 0.875rem;
    border-radius: 9999px;
    border: 1.5px solid var(--fu-border);
    background: transparent;
    font-family: var(--fu-font-family);
    font-size: 0.775rem;
    font-weight: 500;
    color: var(--fu-text-muted);
    cursor: pointer;
    transition: border-color var(--fu-transition), color var(--fu-transition),
                background var(--fu-transition);
    line-height: 1;
    white-space: nowrap;
}

#fu-text-reverser .fu-tr-pill:hover {
    border-color: var(--fu-accent);
    color: var(--fu-accent);
    background: var(--fu-accent-light);
}

#fu-text-reverser .fu-tr-pill.active {
    background: var(--fu-accent);
    border-color: var(--fu-accent);
    color: var(--fu-btn-primary-text);
    font-weight: 600;
}

/* ── Mode Description ───────────────────────────────────────────────────── */
#fu-text-reverser .fu-tr-mode-desc {
    font-size: 0.825rem;
    color: var(--fu-text-muted);
    font-style: italic;
    line-height: 1;
}

/* ── Workspace Grid (Side-by-Side) ─────────────────────────────────────── */
#fu-text-reverser .fu-tr-workspace {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 0;
    align-items: stretch;
}

/* ── Individual Panel ───────────────────────────────────────────────────── */
#fu-text-reverser .fu-tr-panel {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

/* Override fu-panel padding so we can control header/textarea separately */
#fu-text-reverser .fu-tr-panel.fu-panel {
    padding: 0;
    overflow: hidden;
}

#fu-text-reverser .fu-tr-panel .fu-panel-header {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--fu-border);
    margin-bottom: 0;
}

/* ── Textareas ──────────────────────────────────────────────────────────── */
#fu-text-reverser .fu-textarea {
    background: var(--fu-input-bg);
    border: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    padding: 0.875rem;
    font-family: var(--fu-font-family);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--fu-text);
    min-height: 260px;
    flex-grow: 1;
    resize: none;
    box-sizing: border-box;
    transition: background var(--fu-transition);
}

#fu-text-reverser .fu-textarea:focus {
    outline: none;
    box-shadow: inset 0 0 0 2px var(--fu-accent-light) !important;
}

#fu-text-reverser .fu-textarea[readonly] {
    background-color: var(--fu-bg);
    cursor: default;
}

/* Custom Scrollbars */
#fu-text-reverser .fu-textarea::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

#fu-text-reverser .fu-textarea::-webkit-scrollbar-track {
    background: transparent;
}

#fu-text-reverser .fu-textarea::-webkit-scrollbar-thumb {
    background: var(--fu-border);
    border-radius: var(--fu-radius-sm);
}

#fu-text-reverser .fu-textarea::-webkit-scrollbar-thumb:hover {
    background: var(--fu-border-focus);
}

/* ── Directional Divider ────────────────────────────────────────────────── */
#fu-text-reverser .fu-tr-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

/* Vertical rule line */
#fu-text-reverser .fu-tr-divider::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 1px;
    background: var(--fu-border);
    transform: translateX(-50%);
}

/* Centered arrow badge floating on top of the line */
#fu-text-reverser .fu-tr-arrow-badge {
    position: relative;
    z-index: 2;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--fu-bg);
    border: 1px solid var(--fu-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    color: var(--fu-text-muted);
    user-select: none;
    pointer-events: none;
    flex-shrink: 0;
}

/* ── Stats Bar ──────────────────────────────────────────────────────────── */
#fu-text-reverser .fu-tr-stats-bar {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 0.5rem;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--fu-text-muted);
    line-height: 1;
}

/* ── Responsive: Stack on Mobile ────────────────────────────────────────── */
@media (max-width: 800px) {
    #fu-text-reverser .fu-tr-workspace {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto;
    }

    #fu-text-reverser .fu-tr-divider {
        width: 100%;
        height: 36px;
    }

    /* On mobile, rotate the line to horizontal and point arrow down */
    #fu-text-reverser .fu-tr-divider::before {
        top: 50%;
        bottom: auto;
        left: 0;
        right: 0;
        width: 100%;
        height: 1px;
        transform: translateY(-50%);
    }

    #fu-text-reverser .fu-tr-arrow-badge {
        transform: rotate(90deg);
    }
}

@media (max-width: 640px) {
    #fu-text-reverser .fu-tr-controls-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.625rem;
    }

    #fu-text-reverser .fu-tr-mode-desc {
        display: none;
    }

    #fu-text-reverser .fu-tr-pills {
        flex-wrap: wrap;
    }
}