/* Shared styles for text-tool pages (Summarizer, Nice Writer) that follow the
   Translator page's two-panel layout. */

.tool-container {
    display: flex;
    flex-direction: column;
    height: calc(100vh - 80px);
    padding: 1.25rem 1.5rem 1rem;
    gap: 1rem;
    box-sizing: border-box;
}

/* ── Header ── */
.tool-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-shrink: 0;
}

    .tool-header h2 {
        margin: 0;
        font-size: 1.4rem;
        display: flex;
        align-items: center;
        gap: 0.4rem;
        color: var(--color-primary-4, #1c1c1c);
    }

.tool-back-link {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.85rem;
    color: var(--color-accent-0, #3c82a4);
    text-decoration: none;
    white-space: nowrap;
}

    .tool-back-link:hover {
        text-decoration: underline;
    }

/* ── Two-panel row ── */
.tool-panels {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 0.5rem;
    flex: 1;
    min-height: 0;
}

/* ── Individual panel ── */
.tool-panel {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--color-primary-1, #ececec);
    border-radius: 8px;
    background: var(--color-primary-0, #fafaf8);
    overflow: hidden;
}

.tool-panel-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-primary-2, #a0a0a0);
}

.tool-panel-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 0.75rem 0.4rem;
    min-height: 3.1rem;
    box-sizing: border-box;
    flex-shrink: 0;
    gap: 0.5rem;
    flex-wrap: nowrap;
    border-bottom: 1px solid var(--color-primary-1, #ececec);
}

.tool-toolbar-controls {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    flex-wrap: nowrap;
}

.tool-summary-options {
    display: flex;
    align-items: flex-end;
    gap: 0.5rem;
    margin-left: auto;
    flex-wrap: wrap;
}

.tool-summary-options .tool-option-label {
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
    font-size: 0.65rem;
}

.tool-btn-action {
    font-size: 0.875rem;
    padding: 0.3rem 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.tool-btn-copy,
.tool-btn-clear {
    font-size: 0.875rem;
    padding: 0.3rem 0.6rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* ── Source textarea ── */
.tool-textarea {
    flex: 1;
    width: 100%;
    border: none;
    outline: none;
    resize: none;
    background: transparent;
    padding: 0.5rem 0.85rem 0.85rem;
    font-size: 0.95rem;
    color: var(--color-primary-4, #1c1c1c);
    font-family: inherit;
    line-height: 1.6;
    box-sizing: border-box;
}

    .tool-textarea::placeholder {
        color: var(--color-primary-2, #a0a0a0);
    }

    .tool-textarea:disabled {
        opacity: 0.6;
        cursor: not-allowed;
    }

/* ── Output area ── */
.tool-output {
    flex: 1;
    overflow-y: auto;
    padding: 0.75rem 0.85rem;
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--color-primary-4, #1c1c1c);
    white-space: pre-wrap;
    word-break: break-word;
}

.tool-output-placeholder {
    color: var(--color-primary-2, #a0a0a0);
    font-style: italic;
}

.tool-error {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    color: #c0392b;
    font-size: 0.9rem;
}

/* ── Spinner for action button ── */
@keyframes tool-spin {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}

.tool-spin {
    display: inline-block;
    animation: tool-spin 0.8s linear infinite;
}

/* ── Footer: option dropdowns + ontology lexicon selector ── */
.tool-footer {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
}

.tool-options {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
}

.tool-option-label {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-primary-2, #a0a0a0);
}

.tool-option-select {
    font-size: 0.875rem;
    padding: 0.3rem 0.5rem;
    border: 1px solid var(--color-primary-1, #ececec);
    border-radius: 5px;
    background: #fff;
    color: var(--color-primary-4, #1c1c1c);
    cursor: pointer;
    text-transform: none;
    letter-spacing: normal;
    font-weight: normal;
}

    .tool-option-select:disabled {
        opacity: 0.6;
        cursor: not-allowed;
    }

/* ── Responsive: stack panels on narrow screens ── */
@media (max-width: 720px) {
    .tool-panels {
        grid-template-columns: 1fr;
    }

    .tool-container {
        height: auto;
    }

    .tool-panel {
        min-height: 220px;
    }

    .tool-panel-toolbar,
    .tool-toolbar-controls,
    .tool-summary-options {
        flex-wrap: wrap;
    }
}