/* Keyword Combinator Styles */

.tool-hero {
    background: var(--bg-secondary);
    padding: var(--space-16) 0;
    text-align: center;
    border-bottom: 1px solid var(--border);
}

.tool-hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--space-3);
}

.tool-hero p {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

.tool-content {
    padding: var(--space-12) 0;
}

/* Columns Section */
.columns-section {
    margin-bottom: var(--space-8);
}

.columns-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-6);
}

.columns-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.columns-actions {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
    justify-content: flex-end;
}

.columns-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-4);
}

/* Column Card */
.column {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-base);
    padding: var(--space-4);
    transition: border-color var(--transition), opacity var(--transition);
}

.column--dragging {
    opacity: 0.55;
}

.column--drop-target {
    border-color: var(--primary);
}

.column__header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-3);
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--border);
}

.column__drag {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    flex: 0 0 24px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--gray-400);
    cursor: grab;
    font-size: 0.875rem;
    line-height: 1;
}

.column__drag:active {
    cursor: grabbing;
}

.column__drag:hover,
.column__drag:focus-visible {
    color: var(--text);
    border-color: var(--primary);
    outline: none;
}

.column__title {
    font-weight: 600;
    font-size: 0.875rem;
}

.column__optional {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-left: auto;
}

.column__optional input {
    margin: 0;
}

.column__remove {
    background: none;
    border: none;
    color: var(--gray-400);
    cursor: pointer;
    padding: var(--space-1);
    font-size: 1.25rem;
    line-height: 1;
    transition: color var(--transition);
}

.column__remove:hover {
    color: var(--error);
}

.column textarea {
    width: 100%;
    min-height: 150px;
    padding: var(--space-3);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.875rem;
    resize: vertical;
    margin-bottom: var(--space-3);
}

.column textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.column__options {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.column__options label {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    font-size: 0.75rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.column__options input {
    margin: 0;
}

/* Options Section */
.options-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-base);
    padding: var(--space-6);
    margin-bottom: var(--space-8);
}

.options-section h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-4);
}

.options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: var(--space-3);
}

.option-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.875rem;
    color: var(--text);
    cursor: pointer;
}

.option-item input {
    margin: 0;
}

/* Operators Hint */
.operators-hint {
    margin-top: var(--space-4);
    border: none;
}

.operators-hint__toggle {
    font-size: 0.8125rem;
    color: var(--gray-400);
    cursor: pointer;
    list-style: none;
    user-select: none;
}

.operators-hint__toggle::-webkit-details-marker {
    display: none;
}

.operators-hint__toggle::before {
    content: "▸ ";
}

.operators-hint[open] > .operators-hint__toggle::before {
    content: "▾ ";
}

.operators-hint__toggle:hover {
    color: var(--gray-500);
}

.operators-hint__list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin-top: var(--space-3);
    padding: var(--space-3);
    background: var(--white);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.operators-hint__row {
    display: flex;
    gap: var(--space-3);
    align-items: baseline;
}

.operators-hint__op {
    font-family: monospace;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--gray-700);
    white-space: nowrap;
    min-width: 90px;
    flex-shrink: 0;
}

.operators-hint__desc {
    font-size: 0.8125rem;
    color: var(--gray-500);
    line-height: 1.4;
}

.operators-hint__desc em {
    font-style: normal;
    color: var(--gray-600);
    font-family: monospace;
    font-size: 0.75rem;
}

/* Generate Section */
.generate-section {
    text-align: center;
    margin-bottom: var(--space-8);
}

.btn-large {
    padding: var(--space-4) var(--space-8);
    font-size: 1rem;
}

.btn-loader {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid var(--white);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.btn-loader.hidden {
    display: none;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Result Section */
.result-section {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-base);
    padding: var(--space-6);
    margin-bottom: var(--space-8);
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-4);
    flex-wrap: wrap;
    gap: var(--space-3);
}

.result-header h3 {
    font-size: 1rem;
    font-weight: 600;
}

.result-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.result-count {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

#resultArea {
    width: 100%;
    min-height: 200px;
    padding: var(--space-4);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: monospace;
    font-size: 0.875rem;
    resize: vertical;
    background: var(--bg-secondary);
}

.direct-warning {
    margin-top: var(--space-3);
    padding: var(--space-3);
    border: 1px solid var(--warning);
    border-radius: var(--radius-sm);
    background: #fff8e6;
    color: #6f4f00;
    font-size: 0.875rem;
    line-height: 1.5;
}

.direct-warning[hidden] {
    display: none;
}

/* Storage Section */
.storage-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-base);
    padding: var(--space-6);
}

.storage-section h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-4);
}

.storage-controls {
    display: flex;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
    flex-wrap: wrap;
}

.storage-controls select {
    flex: 1;
    min-width: 200px;
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.875rem;
    background: var(--white);
}

.save-controls {
    display: flex;
    gap: var(--space-2);
}

.save-controls .input {
    flex: 1;
}

/* Buttons */
.btn-small {
    padding: var(--space-2) var(--space-3);
    font-size: 0.8125rem;
}

.btn-text-small {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 0.8125rem;
    cursor: pointer;
    padding: var(--space-2);
}

.btn-text-small:hover {
    color: var(--text);
}

/* SEO Content */
.seo-content {
    background: var(--bg-secondary);
    padding: var(--space-16) 0;
    border-top: 1px solid var(--border);
}

.seo-content h2 {
    font-size: 1.5rem;
    margin-bottom: var(--space-4);
    margin-top: var(--space-8);
}

.seo-content h2:first-child {
    margin-top: 0;
}

.seo-content p,
.seo-content li {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-3);
}

.seo-content ul {
    padding-left: var(--space-6);
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    background: var(--gray-900);
    color: var(--white);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-base);
    font-size: 0.875rem;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s, transform 0.3s;
    z-index: 1000;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
    .tool-hero {
        padding: var(--space-12) 0;
    }

    .tool-hero h1 {
        font-size: 1.75rem;
    }

    .columns-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-3);
    }

    .columns-actions {
        width: 100%;
        justify-content: flex-start;
    }

    .columns-container {
        grid-template-columns: 1fr;
    }

    .options-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .result-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .storage-controls {
        flex-direction: column;
    }

    .storage-controls select {
        min-width: 100%;
    }

    .save-controls {
        flex-direction: column;
    }
}