.tool-title-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--primary-light);
}

.tool-title-wrapper i {
    font-size: 2rem;
    color: var(--primary-color);
}

.tool-title-wrapper .tool-title {
    margin-bottom: 0;
    border-bottom: none;
}

.config-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 16px;
    align-items: end;
}

.config-section {
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.option-buttons {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.option-btn {
    flex: 1;
    min-width: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 12px;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 13px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.option-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.option-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.count-input-wrapper {
    display: flex;
    align-items: center;
    gap: 0;
}

.count-btn {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
    font-size: 14px;
}

.count-btn:first-child {
    border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.count-btn:hover {
    background: var(--primary-light);
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.count-input {
    width: 70px;
    height: 38px;
    text-align: center;
    border-radius: 0;
    border-left: none;
    border-right: none;
    font-size: 15px;
    font-weight: 600;
    -moz-appearance: textfield;
}

.count-input::-webkit-outer-spin-button,
.count-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.count-unit {
    padding: 0 12px;
    height: 38px;
    display: flex;
    align-items: center;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-left: none;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    color: var(--text-muted);
    font-size: 13px;
}

.checkbox-group {
    display: flex;
    align-items: center;
    height: 100%;
    padding-bottom: 8px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-secondary);
    user-select: none;
}

.checkbox-label input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.checkbox-custom {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    position: relative;
    transition: var(--transition-fast);
    flex-shrink: 0;
}

.checkbox-label input:checked ~ .checkbox-custom {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.checkbox-label input:checked ~ .checkbox-custom::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 1px;
    width: 4px;
    height: 9px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.action-row {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
}

.btn-large {
    flex: 1;
    padding: 12px 24px;
    font-size: 15px;
}

.result-section {
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.result-header h3 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.result-stats {
    font-size: 13px;
    color: var(--text-muted);
}

.result-stats span {
    color: var(--primary-color);
    font-weight: 600;
    font-family: 'Consolas', 'Monaco', monospace;
}

.result-textarea {
    font-size: 14px;
    line-height: 1.7;
}

@media (max-width: 768px) {
    .config-grid {
        grid-template-columns: 1fr 1fr;
    }

    .checkbox-group {
        grid-column: span 2;
        padding-bottom: 0;
    }

    .action-row {
        flex-direction: column;
    }
}