/**
 * Styling for the Roman Numeral Converter tool
 * Scoped entirely under #fu-roman-numeral-converter
 * Matches single-panel converter architecture
 */

#fu-roman-numeral-converter .fu-roman-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.25rem;
    width: 100%;
    max-width: 620px;
    margin: 0 auto;
    box-sizing: border-box;
}

/* ─── Mode Selector Tabs ─────────────────────────────────────────────────── */

#fu-roman-numeral-converter .fu-roman-modes {
    display: flex;
    width: 100%;
    max-width: 440px;
    background: var(--fu-input-bg);
    border: 1px solid var(--fu-border);
    border-radius: 9999px;
    padding: 0.3rem;
    gap: 0.25rem;
    box-sizing: border-box;
}

#fu-roman-numeral-converter .fu-roman-mode-btn {
    flex: 1;
    text-align: center;
    background: transparent;
    border: none;
    outline: none;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--fu-text-muted);
    padding: 0.5rem 0.6rem;
    border-radius: 9999px;
    cursor: pointer;
    transition: all 0.2s ease;
    user-select: none;
    white-space: nowrap;
}

#fu-roman-numeral-converter .fu-roman-mode-btn:hover {
    color: var(--fu-text);
}

#fu-roman-numeral-converter .fu-roman-mode-btn.active {
    background: var(--fu-accent);
    color: #ffffff;
    box-shadow: var(--fu-shadow-sm);
}

/* ─── Primary Workspace Panel ────────────────────────────────────────────── */

#fu-roman-numeral-converter .fu-roman-main-panel {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    box-sizing: border-box;
}

#fu-roman-numeral-converter .fu-roman-input-field {
    width: 100%;
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    padding: 0.75rem 1rem;
    text-transform: uppercase;
    box-sizing: border-box;
}

#fu-roman-numeral-converter .fu-roman-hint {
    margin-top: -0.25rem;
    font-size: 0.8rem;
    color: var(--fu-text-muted);
}

#fu-roman-numeral-converter .fu-roman-hint.error {
    color: #ef4444;
    font-weight: 600;
}

/* ─── Output Block (Revealed when input is populated) ───────────────────── */

#fu-roman-numeral-converter .fu-roman-output-block {
    margin-top: 0.5rem;
    padding-top: 1rem;
    border-top: 1px dashed var(--fu-border);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

#fu-roman-numeral-converter .fu-roman-output-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

#fu-roman-numeral-converter .fu-roman-case-pills {
    display: inline-flex;
    background: var(--fu-input-bg);
    border: 1px solid var(--fu-border);
    border-radius: 9999px;
    padding: 0.15rem;
    gap: 0.15rem;
}

#fu-roman-numeral-converter .fu-roman-case-btn {
    background: transparent;
    border: none;
    font-size: 0.725rem;
    font-weight: 700;
    color: var(--fu-text-muted);
    padding: 0.2rem 0.55rem;
    border-radius: 9999px;
    cursor: pointer;
    transition: all 0.15s ease;
}

#fu-roman-numeral-converter .fu-roman-case-btn.active {
    background: var(--fu-accent);
    color: #ffffff;
}

#fu-roman-numeral-converter .fu-roman-slug-display {
    font-size: 2.25rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    color: var(--fu-accent);
    word-break: break-all;
    overflow-wrap: anywhere;
    line-height: 1.25;
    padding: 0.25rem 0;
    user-select: all;
    cursor: text;
}

/* ─── Calculation Breakdown ─────────────────────────────────────────────── */

#fu-roman-numeral-converter .fu-roman-breakdown {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-top: 0.25rem;
}

#fu-roman-numeral-converter .fu-roman-breakdown-title {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--fu-text-muted);
}

#fu-roman-numeral-converter .fu-roman-breakdown-chips {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.875rem;
}

#fu-roman-numeral-converter .fu-roman-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    background: var(--fu-input-bg);
    border: 1px solid var(--fu-border);
    padding: 0.3rem 0.65rem;
    border-radius: var(--fu-radius);
    font-weight: 600;
    color: var(--fu-text);
}

#fu-roman-numeral-converter .fu-roman-chip-sym {
    color: var(--fu-accent);
    font-weight: 800;
}

#fu-roman-numeral-converter .fu-roman-chip-plus {
    color: var(--fu-text-muted);
    font-weight: 700;
}

/* ─── Responsive Media Queries ───────────────────────────────────────────── */

@media (max-width: 480px) {
    #fu-roman-numeral-converter .fu-roman-slug-display {
        font-size: 1.85rem;
    }

    #fu-roman-numeral-converter .fu-roman-mode-btn {
        padding: 0.45rem 0.85rem;
        font-size: 0.825rem;
    }
}